Find flights
Deals
Insights
When to book
FAQs & Tips
Direct Flights
Airlines

ONT

Find cheap flights to Ontario from £408

This is the cheapest return flight price found by a KAYAK user in the last 72 hours by searching for a flight to Ontario departing on 14/4. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
0 bags
Thu 18/4
Thu 25/4

Search hundreds of travel sites at once for deals on flights to Ontario

 
These are the airlines KAYAK users have selected most often from within our search results for flights to Ontario
These are the airlines KAYAK users have selected most often from within our search results for flights to Ontario
In the last 7 days, travellers have searched 47,600,107 times on KAYAK, and here's why:

Save 24% or moreCompare multiple travel sites with one search.

Track pricesNot ready to book? Create a price alert for when prices drop.

Filter your dealsChoose cabin class, free Wi-Fi and more.

Bundle and saveSave money when you bundle your flight + hotel.

Cheap flight deals to Ontario

Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights to Ontario that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
20:40 - 20:14LHR-ONT
31h 34m2 stops
22:20 - 07:30ONT-LHR
25h 10m1 stop
£408Finnair
Find Deal
Sun, 14 Apr - Sun, 21 Apr
10:40 - 23:57LGW-ONT
21h 17m2 stops
06:00 - 08:10ONT-LGW
18h 10m2 stops
£410American Airlines
Find Deal
Tue, 16 Apr - Tue, 23 Apr
14:45 - 21:56LHR-ONT
15h 11m1 stop
22:20 - 07:30ONT-LHR
25h 10m1 stop
£437American Airlines
Find Deal
Wed, 17 Apr - Wed, 24 Apr
15:55 - 22:17LHR-ONT
14h 22m1 stop
12:35 - 11:10ONT-LHR
14h 35m1 stop
£438Virgin Atlantic
Find Deal
Mon, 8 Apr - Mon, 22 Apr
10:55 - 23:59LHR-ONT
21h 04m1 stop
13:20 - 10:00ONT-LHR
12h 40m1 stop
£450Virgin Atlantic
Find Deal
Sun, 14 Apr - Wed, 24 Apr
11:00 - 18:49LHR-ONT
15h 49m1 stop
12:55 - 11:05ONT-LHR
14h 10m1 stop
£456British Airways
Find Deal
Wed, 10 Apr - Wed, 24 Apr
11:00 - 18:49LHR-ONT
15h 49m1 stop
12:55 - 11:05ONT-LHR
14h 10m1 stop
£464British Airways
Find Deal
Mon, 8 Apr - Mon, 22 Apr
14:50 - 20:40LHR-ONT
13h 50m1 stop
13:36 - 09:40ONT-LHR
12h 04m1 stop
£482United Airlines
Find Deal
Wed, 1 May - Mon, 6 May
07:30 - 23:04LHR-ONT
23h 34m2 stops
06:00 - 10:25ONT-LHR
20h 25m1 stop
£485United Airlines
Find Deal
Wed, 1 May - Wed, 22 May
11:05 - 20:40LHR-ONT
17h 35m1 stop
13:36 - 05:55ONT-LHR
32h 19m2 stops
£897Lufthansa
Find Deal
Sun, 7 Apr - Sat, 13 Apr

Flights to Ontario - Travel Insights & Trends

Get data-powered insights and trends into flights to Ontario to help you find the cheapest flights, the best time to fly and much more.

What is the cheapest day to fly to Ontario?

The average price of all flights to Ontario clicked on KAYAK for each day over the last 12 months.
Based on KAYAK data, the cheapest day to fly to Ontario is Tuesday where tickets can be as cheap as £483. On the other hand, the most expensive day to fly is Thursday, where prices are £651 on average.

What is the cheapest month to fly to Ontario?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for flights to Ontario, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.
The cheapest month for flights to Ontario is April, where tickets cost £467 on average for one-way flights. On the other hand, the most expensive months are August and July, where the average cost of tickets from the United Kingdom is £977 and £859 respectively. For return trips, the best month to travel is February with an average price of £392.

What is the cheapest time of day to fly to Ontario?

The average price for all flights to Ontario depending on the time of departure, clicked by users on KAYAK in the last 2 weeks.
The cheapest time of day to fly to Ontario is generally at night, when flights cost £503 on average. The most expensive time of day to fly to Ontario is generally in the afternoon, which is peak travel time and where the average cost of a ticket is £573.

How far in advance should I book a flight to Ontario?

To calculate daily average prices, KAYAK takes all prices for each day before departure over the last year for flights to Ontario, removes the top 0.1% to account for outliers, and then takes the average of all the values for each month.
To get a below average price, you should book around 0 weeks before departure. For the absolute cheapest price, our data suggests you should book 59 days before departure.

How long is the flight to Ontario?

The duration of your flight to Ontario depends on your departure and arrival airports. Obviously any flights that include a layover will also be longer. The most popular routes to Ontario on KAYAK are from Manchester, which takes 14h 25m, Edinburgh, which takes 16h 15m, and London, which takes 16h 53m.

How many long-haul flights are there to Ontario each week?

Each week there are around 7 long-haul flights (6-12 hour flight duration), 82 medium-haul (3-6 hour flight duration) and 820 short-haul (up to 3 hour flight duration) flights to Ontario. The most long-haul flights depart from Taipei City Taiwan Taoyuan Intl Airport.

Good to know - Cheap tickets to Ontario

Low season

January

High season

November

Cheapest flight

£408
Best time to beat the crowds (21% less expensive on average)
Most popular time to fly and prices are also 9% lower on average.
Flight from London Heathrow Airport to Ontario

When to book flights to Ontario

Are your dates flexible? Find out the best times to travel to Ontario based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated return price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or returns with a duration up to 40 days. The information is for flights to Ontario based on your location. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs - booking Ontario flights

  • How far is Ontario from central Ontario?

    Central Ontario is 3 miles away from Ontario.

  • What is the name of Ontario’s airport?

    Ontario is served by Ontario, also commonly referred to as Ontario or Ontario Intl. The airport code is ONT.

  • How does KAYAK find such low prices on flights to Ontario?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights to Ontario.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket to Ontario?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Ontario is likely to change within 7 days, so travellers know whether to wait or book now.

  • What is the Hacker Fare option on flights to Ontario?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Ontario with an airline and back with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight to Ontario?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Ontario up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

  • Which airline offers the most flights to Ontario?

    Of the 9 airlines that fly to Ontario, Southwest offers the most flights, with around 417 per week, followed by American Airlines with 129 flights per week.

See more FAQs

Top tips for finding cheap flights to Ontario

  • Enter your preferred departure airport and travel dates into the search form above to unlock the latest Ontario flight deals.

Prefer to fly direct to Ontario?

Find which airlines fly direct to Ontario, which days they fly and book direct flights.

Direct departures

United Kingdom to Ontario

Monday

Aeromexico, Air Canada, Air France, +23 more

Aeromexico, Air Canada, +24 more

Tuesday

Aeromexico, Air Canada, Air France, +22 more

Aeromexico, Air Canada, +23 more

Wednesday

Aeromexico, Air Canada, Air France, +21 more

Aeromexico, Air Canada, +22 more

Thursday

Aeromexico, Air Canada, Air France, +23 more

Aeromexico, Air Canada, +24 more

Friday

Aeromexico, Air Canada, Air France, +22 more

Aeromexico, Air Canada, +23 more

Saturday

Aeromexico, Air Canada, Air France, +21 more

Aeromexico, Air Canada, +22 more

Sunday

Aeromexico, Air Canada, Air France, +24 more

Aeromexico, Air Canada, +25 more

See more direct flights

Direct returns

Ontario to United Kingdom

Monday

Aeromexico, Air Canada, Air France, +23 more

Aeromexico, Air Canada, +24 more

Tuesday

Aeromexico, Air Canada, Air France, +22 more

Aeromexico, Air Canada, +23 more

Wednesday

Aeromexico, Air Canada, Air France, +21 more

Aeromexico, Air Canada, +22 more

Thursday

Aeromexico, Air Canada, Air France, +23 more

Aeromexico, Air Canada, +24 more

Friday

Aeromexico, Air Canada, Air France, +22 more

Aeromexico, Air Canada, +23 more

Saturday

Aeromexico, Air Canada, Air France, +21 more

Aeromexico, Air Canada, +22 more

Sunday

Aeromexico, Air Canada, Air France, +24 more

Aeromexico, Air Canada, +25 more

See more direct flights
See more direct flights

Top 5 airlines flying to Ontario

Need help choosing which airline to fly with to Ontario? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to KAYAK reviews.
7.7
FinnairOverall score based on 1376 reviews
78boarding
76comfort
78overall
70entertainment
82crew
69food
Airline reviews

I’m very disappointed, to fly into an airplane for 10 straight hours, and not having a TV even though when I put the ticket I was told that I will have entertainment for the TV. Very disappointed.

Read more about Finnair

I’m very disappointed, to fly into an airplane for 10 straight hours, and not having a TV even though when I put the ticket I was told that I will have entertainment for the TV. Very disappointed.

Helpful steward. Allowed me to move to some empty seats and I was able to get some sleep. He also had milk for my tea. Americans don’t realise that cream or half and half ruin tea.

Security was a mess at the Helsinki Airport. But I was delighted by the connecting flight waiting for us for JFK.

Very rude hostess. She embarrassed me in front of others. I went to sit after taking off in a different sit in the same economic cabin. Was the area where doors are. She come to me very laud and said: go back to your sit those sit are more expensive.wow! No diplomacy. Flight was super full except 3 of those sit. The only person in that row later during the flight occupied all sit laying down!. Once more disappointed at American Airlines. Early flight they lost my luggages for 4 days. Never refund money for replacement for some of essential items purchased..when I booked the flight I thought was Finlandair. I

The crew was very good, excellent, they help me with my needs.! Food was not that good.

Everything was quite easy from boarding to landing - the staff was great and service was excellent too!

Flights are standard. But being over 3 hours late is too much.

In-flight entertainment was. It working for the entire 12 hour flight! Unbelievable! At least provide free wi-fi so people could use their phones.

The flight was surprisingly good, especially given initial experience. BA app is horrible as is their customer service. Online check in was a horrendous experience and when I phoned their customer service number, the live agent with whom I spoke was rude and dismissive. She did helpfully inform me that their IT people were working on a known problem related to online checkin. However, once she delivered that information, she curtly ended the call before I could suggest that since BA was aware of this, it should be posted on the app and online. I grudgingly flew BA this time - have avoided them for years because of past similar serial bad experiences. While this flight was fine, I’ll return to avoiding them in the future given the hassle experienced and rude personnel.

Boarding was a shambles, with no proper line or queue and multiple groups joining at the same time. Overhead space was limited. Seat spacing (width) is not generous. My neighbour was invading my space, before he even spilt his drinks over me (twice!) as he struggled to contain his meal on the table. The main meal was very poor. Choice was simply chicken / turkey - the crew didn't know exactly which - or vegetarian. The chicken meal was really poor quality - uninspiring and tasteless; and very little offering of drinks. Half the crew were friendly, half really need to cheer up.

Very good. Glad we had Premium for the flight out.

We flew Upper Class from London to The Turks and Caicos. Check in was amazing. Our ldriver too us directly to a special entrance to terminal 3. It took 10 minutes to check in and clear customs. Amazing! The VA lounge is large and comfortable. Boarding the flight was easy and without a wait. The crew was excellent. But the seats were awful, strange and uncomfortable. Having a comfortable flat bed seat is the reason we pays 1000s extra. The VA 787 uses a reverse herringbone configuration. Look it up. You have your back to the window and are facing the aisle with no privacy. Turning the seat into a bed requires assistance from the crew so not very spontaneous. . The food was ok. A bit tasteless and meager portions. Had to pay for WiFi. I believe VA has other configuration on their dream airbus flights. Lots of stuff about all this on YouTube where you can see what I have been describing. I can not recommend taking VA on a long flight with these seats.

From the start everything was perfectly fine. First meal was fantastic. Breakfast needs a lot of work and food was overcooked and not very nice for breakfast. Staff for a fantastic friendly nice we came round and check we need anything else to eat or drink

We originally had a window seat. Our seats were changed to the center isle between 2 bathrooms. This was a red eye flight and we were traveling with an infant. Due to the light from the bathroom doors opening and closing throughout the night our infant would not sleep and cried the whole night which kept us awake and everyone around us. It was a very unpleasant experience for everyone trying to sleep.

Tai-City to Atlanta :Lots of legroom on the flight. No interaction from the staff at all on the plane. They only attended to the First Class passengers. There was no entertainment. Security I was body scanned even though I hadn't set off an alarm, my father-in-law in his 80s, was stopped and subjected to a through body search, told that they would have to place their hands in intimate places. There were several border guards present, and as we walked off we could hear the TWA officer talk about the procedure as if he was training. My father-in-law was a little upset about the whole process. A kind explanation that training was taking place would have been more acceptable, and it felt dehumanizing to him. Atlanta to London: Check in was difficult we had been unable to do this online for 2 of the family members on the same booking both in their mid to late-80s. No seats had been allocated for them and we were all travelling Premium Economy. After several phone calls to the booking agent and conversations with Delta staff at TriCites airport, we were told that seats would be allocated at the gate in Atlanta. When we arrived at Atlanta, and spoke to a member of the boarding staff at the gate, he was curt and repeated back exactly what we had just told him, that only one of us was checked in. I explained that we had been unable to check-in online for the 2 family members (I had tried twice). He again repeated back that we needed to check-in. As we were in transit, I was at a loss at what he wanted us to do, but he kept repeating that we needed to do this. I asked where we should do this. No answer. In fact all he did throughout was look at his screen. He told us that there were no seats in Premium Economy, and that he could offer my parents-in-law 'two seats at the back'. I asked if he meant at the back of Premium Economy, and he replied, 'No, at the back of the plane'. At this point, myself and my father-in-law pointed out that they had paid for Premium Economy tickets and expected seats there. He never took his eyes off the screen once. Then he hit a button and it printed out two boarding passes for my parents-in-law. The seats were directly across from my seat. He had gone from saying there were no seats to somehow finding two together. No explanation, no eye contact, nothing. The flight: As we boarded, our first introduction to the flight was the stewardess at the entrance addressing a passenger with an annoyed and loud voice about a bag that belonged to them. That was not promising. The seats were good, and so were all the accessories. The food, etc.: we had flown with Virgin on our outward journey and I could not fault it. The service and food was excellent, the stewards very helpful, offering additional drinks and snacks. The toilets were more accessible than Delta, which were in the economy area and were told in no uncertain terms that we should not use the First Class toilets, even though they were much closer to our section of the plane. We had a menu for both flights, yet when I asked for the chicken dish on Delta, I was told that there was none left and that there was another chicken dish with mashed potatoes and that 'it was fine'. This was almost pushed on me before I could answer. I was sitting 3 rows from the front of the section, so I was surprised that they had already run out. I repeated that I would like the chicken dish on the menu, and asked whether she would be able to get one from her colleague who was serving in the other aisle. The stewardess replied 'No, that's not how it works!' It always has on previous flights, so I was a bit confused. I accepted that I would have to opt for the pasta option (no choice), but was a little perturbed by her response. Minutes later she returns and hands me the chicken dish I had originally asked for. I had already started eating the other one, but was told curtly that I could have both. This was the same stewardess who was shouting at a passenger as we boarded the plane. The food was very poor in the end, nowhere near as good as Virgin's. Unlike Virgin, there was no starter, no bread roll, just a main and a brownie served in a cardboard container. Virgin had provided real china and glass. Unlike Virgin, they did not return to ask if we wanted more drinks, and there was no tea or coffee served after the meal. The breakfast that was served later was equally poor and inedible, apart from the fruit. At the time, the stewardess, a different one, completely walked past my mother-in-law and did not offer her a hot drink. Both my parents-in-law are in their mid to late 80s, they have been world travellers in their time and had decided that this would be the last flight that they ever take. They have health problems, including memory issues. I feel that overall the journey back to London was pretty unpleasant for them especially, and that they were treated badly, especially by the ground staff. We have lived on two continents and are used to long haul flights, and I have to say that this is up there in the worst flight category. Bearing in mind that we had paid extra money expecting comfort and additional attention, it was extremely disappointing. I would fly Virgin again, but never Delta. The two flights were incomparable.

Lots of legroom on the flight. No interaction from the staff at all on the plane. They only attended to the First Class passengers. There was no entertainment. Security I was body scanned even though I hadn't set off an alarm, my father-in-law in his 80s, was stopped and subjected to a through body search, told that they would have to place their hands in intimate places. There were several border guards present, and as we walked off we could hear the TWA officer talk about the procedure as if he was training. My father-in-law was a little upset about the whole process. A kind explanation would have been more acceptable, and it felt dehumanizing to him.

Needed a 6 hour lay over in Atlanta. How can this be avoided ?

Security area in terminal 3 needs to be made much nicer. Less claustrophobic and use of glass and big ceilings wouldhelp

i saved my points for more than 10 years in anticipation of treating myself to an upper class fight to and from london on virgin atlantic. i was shocked to find what you consider “upper class” on the dreamliner. it was, at best, a mediocre business class accommodation. it was tight and not that comfortable, with nearly no personal storage. everything was cramped and just generally disappointing. once i lucked into a 1st class upgrade to europe on lufthansa - a magical experience that found me reluctant to sleep, lest i deprive myself the joy of their setup. i expected something similar from virgin atlantic, but i could not have been more wrong. it will be the same arrangement on my flight home, but at least i know what (not) to expect. to be clear, this is only in reaction to the physical accommodations. your people were, and always are fantastic.

accomodating check in staff, friendly flight crew ( a crew member was speaking tactlessly and was overfamiliar with passengers

I was not able to buy food in the flight. They refer to include your Credit card in the APP, and if you are not from USA (i have a credit card form Canada) it is not possible

Over two hours wait to get wheelchair assistance from arrival to the departure gate for LA was unreasonable even though there appreared to be heavy demand.

The seat is too hard and my back and bottom are having servers pain

I was duped into thinking it was a United Airlines flight when in fact United had nothing to do with it.

Airline did not explain reasons why flight was delayed two hours. Explanations were badly needed and rarely provided. Problem seemed to clearly be the airline’s fault and not the fault of the weather or airport.

I was delighted that we were able to get on the 4:40 pm flight rather than our original booking at 6:55 pm!! Other than that, the flight was comfortable and landed early😊

There was no lounge for passengers waiting before boarding the aircraft at F65, so passengers are just sitting on the floor or just spread everywhere the premises before boarding.

All went fine. Boarding was efficient, staff was really friendly, and we were kept up to date on any changes to our itinerary. My only note for improvement is that on this particular plane, the recline in economy class was negligible. I know it's a coach seat, but I had another UA flight (SFO to BWI) and the seat was more comfortable with better recline.

Really good experience with a redeye flight from SFO to BWI. Boarding was efficient, plane was comfortable and newer than others, lots of audio and video choices, and staff was great. I appreciate United's service.

The flight and crew were fine. The entertainment- the sound was so bad through the headphones I could barely understand it and it was a show I had seen before. The food might have been fine but having to have an account with united in order to access the app in order to pay for the food was rage inducing. I had entered my credit card info at home and logged in as guest but that wouldn’t allow the “wallet” tab to open in the app. And then the wifi was so bad that it took about 45 minutes to fully log in and get all the info working at which time I missed the food. You shouldn’t have to give your address, email and phone number in order to get a hamburger.

I wrote about this leg of my itinerary in a previous part of this review

Boarding was horrible. We were packed into a bus with few seats and made to stand for 10 to 15 minutes, then driven for 5 minutes on wild curves. Complementary food and drink was a tiny chocolate and a bottle of water. Seating was cramped. Aircraft had no video.

didn’t even get to go one of my returning flights cancelled and I wasn’t even in their system, vacation ruined thanks for nothing

Crew was rowdy and loud just hanging out in the rear of the plane instead of assisting passengers during boarding. During the flight the crew mostly hung out in the rear of the plane being obnoxious to a point of disturbance.

United flight from Frankfurt to Istanbul is on Lufthanza and United could neither provide a boarding pass or Lufthanza code to get a boarding pass. Very poor connection ability in Frankfurt and much frustration with the connection.

Need more time for connecting flights in Munich Food seems worse now on Lufthansa Very uncomfortable seats

Good with last minute upgrade Clt to Munich comfortable. Wish same offer had been there Mumbai to Munich

Excellent service by united air staff. Very helpful, understanding and do friendly.

+ Clean, modern plane. - Despite the cabin had only 50% occupancy I was cramped in a row with 2 other people. Almost all other rows had only 1 person. I would have expected the airline to offer assistance other than a flight attendant to tell people in the back of the plane to find available seats. Next time I will not purchase an upgraded seat and hope I get my personal row for free.

Overall experience is good with boarding and food. There was no entertainment provided on a leg that made it bit harder.

Boarding process needs to be improved. Business class passengers were told to stand in the economy line and vice versa.

I travelled on biz class and f there is no water in the toilette to wash my hands I would expect to have this indicated somehow and not just finding out when I'm there expecting to be able to wash my hands and teeth. Also this is in general that it is always so rushy at the end of these kind of long flights. It is like we are sitting there for 9 hours and the last 1.5 hours just feels like I have time for nothing. Because food comes and at the same time we are close to destination everyone tries to pack their stuff and go to toilette and eat and everything :))) not that like I would know a good solution here I just wanted to raise this :)

Emergency row seat less comfortable than promoted. Restricted by emergency life raft storage.

Better communication to those connecting flights and have a customer care desk at the airports

The entertainment system in our row was not working. That makes for a VERY long flight!!

Pre flight food options were not working and made the flight not enjoyable. Post experiences of British airways have been positive, but this is enough to stop me using British airways again

Flight cancelled and i was rebooked on delta. Delta business class is not the same as British

Boarding could be smoother. But the flight crew was excellence. Very professional, friendly and helpful.

Everything was fine except my screen wasn’t working and I was unable to watch any movies or TV. Staff tried 3 times to reboot it, without success.

Positive boarding experience, easy access to seat with plenty of luggage space

Book Cheap Ontario Plane Tickets

Recent return flight deals

 
These are the cheapest return flights to Ontario found on KAYAK in the last 72 hours.
14/4Sun
2 stopsFinnair
31h 34mLHR-ONT
21/4Sun
1 stopFinnair
25h 10mONT-LHR
£408
16/4Tue
2 stopsAmerican Airlines
21h 17mLGW-ONT
23/4Tue
2 stopsAmerican Airlines
18h 10mONT-LGW
£410
17/4Wed
1 stopAmerican Airlines
15h 11mLHR-ONT
24/4Wed
1 stopAmerican Airlines
25h 10mONT-LHR
£437
8/4Mon
1 stopVirgin Atlantic
14h 22mLHR-ONT
22/4Mon
1 stopVirgin Atlantic
14h 35mONT-LHR
£438
14/4Sun
1 stopVirgin Atlantic
21h 04mLHR-ONT
24/4Wed
1 stopVirgin Atlantic
12h 40mONT-LHR
£450
10/4Wed
1 stopBritish Airways
15h 49mLHR-ONT
24/4Wed
1 stopBritish Airways
14h 10mONT-LHR
£456
8/4Mon
1 stopBritish Airways
15h 49mLHR-ONT
22/4Mon
1 stopBritish Airways
14h 10mONT-LHR
£464
1/5Wed
1 stopUnited Airlines
13h 50mLHR-ONT
6/5Mon
1 stopUnited Airlines
12h 04mONT-LHR
£482
1/5Wed
2 stopsUnited Airlines
23h 34mLHR-ONT
22/5Wed
1 stopUnited Airlines
20h 25mONT-LHR
£485
7/4Sun
1 stopLufthansa
17h 35mLHR-ONT
13/4Sat
2 stopsLufthansa
32h 19mONT-LHR
£897

Search by stops

Search by airline

Search by price

Recent one-way flight deals

 
Only flying one-way? Below are some of the best deals for one-way flights to Ontario found on KAYAK in the last 72 hours.
8/7Mon
3 stops
45h 51mLHR-ONT
£470
16/4Tue
2 stops
29h 22mLGW-ONT
£522
7/6Fri
2 stops
22h 39mLHR-ONT
£543
1/5Wed
1 stopJetBlue
19h 39mLGW-ONT
£566
14/5Tue
1 stopFinnair
17h 44mLHR-ONT
£1,024
13/5Mon
2 stopsBritish Airways
17h 17mLCY-ONT
£1,183
10/5Fri
2 stopsBritish Airways
19h 37mLCY-ONT
£1,225
18/6Tue
2 stopsUnited Airlines
32h 40mLHR-ONT
£1,264
7/6Fri
3 stopsUnited Airlines
41h 06mLHR-ONT
£1,436
10/4Wed
1 stopVirgin Atlantic
13h 38mLHR-ONT
£1,868

Search by stops

Search by airline

Search by price

Recent domestic flight deals

4/4Thu
directFrontier
2h 36mDEN-ONT
8/4Mon
directFrontier
2h 19mONT-DEN
£78
2/5Thu
directFrontier
2h 25mDEN-ONT
3/5Fri
directFrontier
2h 20mONT-DEN
£79
17/4Wed
directDelta
2h 45mSEA-ONT
20/4Sat
directDelta
2h 53mONT-SEA
£108
10/4Wed
directAlaska Airlines
2h 38mSEA-ONT
19/4Fri
directAlaska Airlines
2h 46mONT-SEA
£115
26/4Fri
directDelta
2h 45mSEA-ONT
4/5Sat
directDelta
2h 53mONT-SEA
£123
19/4Fri
directAlaska Airlines
2h 33mSEA-ONT
20/4Sat
directAlaska Airlines
2h 45mONT-SEA
£135
16/4Tue
directJetBlue
6h 06mJFK-ONT
22/4Mon
directJetBlue
5h 20mONT-JFK
£210
16/4Tue
directJetBlue
6h 06mJFK-ONT
24/4Wed
directJetBlue
5h 20mONT-JFK
£218
21/6Fri
directUnited Airlines
1h 32mSFO-ONT
28/6Fri
directUnited Airlines
1h 20mONT-SFO
£297
5/4Fri
multi-stopUnited Airlines
7h 09mPDX-ONT
7/4Sun
multi-stopUnited Airlines
4h 02mONT-PDX
£311

Search by stops

Search by airline

Search by price

Last minute flights to Ontario

Last minute flight, train and bus deals

 
These last-minute flight deals are the cheapest flights found on KAYAK in the last 72 hours for flights to Ontario that are departing in the next 10 days.
21/3Thu
multi-stopLufthansa
16h 22mLHR-ONT
2/4Tue
multi-stopLufthansa
12h 04mONT-LHR
£700
20/3Wed
multi-stopUnited Airlines
27h 14mLHR-ONT
1/4Mon
multi-stopUnited Airlines
16h 55mONT-LHR
£821
21/3Thu
multi-stopAmerican Airlines
19h 06mLHR-ONT
27/3Wed
multi-stopAmerican Airlines
17h 15mONT-LHR
£827
20/3Wed
multi-stopKLM
23h 39mLBA-ONT
24/3Sun
multi-stopKLM
23h 10mONT-LBA
£928
20/3Wed
multi-stopBritish Airways
16h 50mLHR-ONT
31/3Sun
multi-stopBritish Airways
21h 26mONT-LHR
£931
19/3Tue
multi-stopFinnair
16h 50mLHR-ONT
22/3Fri
multi-stopFinnair
13h 19mONT-LHR
£939
19/3Tue
multi-stopFinnair
16h 50mLHR-ONT
22/3Fri
multi-stopFinnair
13h 19mONT-LHR
£941
20/3Wed
multi-stopKLM
23h 39mLBA-ONT
25/3Mon
multi-stopKLM
21h 07mONT-LBA
£946
20/3Wed
multi-stopBritish Airways
21h 59mLBA-ONT
24/3Sun
multi-stopBritish Airways
24h 06mONT-LBA
£979
23/3Sat
multi-stopVirgin Atlantic
16h 52mLHR-ONT
10/6Mon
multi-stopVirgin Atlantic
12h 18mONT-LHR
£1,337

Search by stops

Search by airline

Search by price

Flights to Ontario, California

Destination:

Ontario (ONT)United States

Return flight deals:

Ontario - United Kingdom

Cabin classes: