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United Kingdom to Ontario flight information

Flights arrive in Ontario
Flights depart from United Kingdom
Flight price £823
Airlines United Airlines, China Airlines

Top tips for finding cheap flights to Ontario

Looking for cheap airfare to Ontario? 25% of our users found return tickets to Ontario for the following prices or less: From London £624
Book at least 4 weeks before departure in order to get a below-average price.
High season is considered to be May, June and July. The cheapest month to fly to Ontario is April.
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FAQs - Booking Ontario flights

What is the cheapest flight to Ontario?

The cheapest airline ticket to Ontario from United Kingdom in the last 72 hours was £823 return on the route London to Ontario. The most popular route is London to Ontario and the cheapest ticket found on this route in the last 72 hours was £2688 return.

How far is Ontario airport from central Ontario?

Ontario Airport is 3 miles from the centre of Ontario. View on map.

What is the name of Ontario’s airport?

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

How does KAYAK find such low flight prices?

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How can Hacker Fares save me money?

Hacker Fares allow you to combine one-way tickets on different airlines when it can save you money over a traditional return ticket.

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Yes, KAYAK has access to more data and information than online travel agencies and consistently outperforms the competition in accuracy, globally.

Does KAYAK query more flight providers than competitors?

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

Book Cheap Ontario Plane Tickets

(Return)
Airports
Origin
London
£823
only
£823
£5355
only
£5355
Glasgow
£962
only
£962
Destination
Ontario
£823
only
£823
Mon, 4 Nov
LHR
London Heathrow
ONT
Ontario
15h 04m
Thu, 21 Nov
ONT
Ontario
LHR
London Heathrow
15h 02m
£823
Trip: 18 days
7.1GoodShow reviews
Overall 7.1 Good
Based on 64,628 reviews
Overall
7.3
Boarding
7.4
Comfort
7.0
Crew
7.7
Entertainment
6.6
Food
6.5
ORD
LAX
Okay 4.3

Pros: The crew was cordial but could have been more pleasant. Seats were horrible and the bathroom was smelly.

Cons: Some type of air deodorizer in the bathroom and crew with a smile.

SBA
DEN
Excellent 10.0

Pros: Crew was very courteous and professional.

HND
SFO
Good 6.0

Pros: Seats were comfortable

Cons: The food was literally inedible. The breakfast of mushroom omelette and sausage was so unsavory, I could see the line where the outter “eggy” shell covered the inside, decidedly less eggy and hidden section. I had to stop eating it after 3 bites. Very disappointed with food quality.

IND
IAD
Excellent 10.0

Pros: The crew went out of their way to ensure the comfort of passengers.

Cons: No complaints

LHR
SFO
Excellent 8.6

Pros: Food has gotten much better than maybe 10 years ago? Decent quantity and taste. Food is heated.

Cons: Boarding took longer than usual but they did announce that the gate we were assigned was not setup for that plane.

Thu, 17 Oct
LHR
London Heathrow
ONT
Ontario
15h 24m
Thu, 31 Oct
ONT
Ontario
LHR
London Heathrow
14h 30m
£960
Trip: 15 days
7.1GoodShow reviews
Overall 7.1 Good
Based on 64,628 reviews
Overall
7.3
Boarding
7.4
Comfort
7.0
Crew
7.7
Entertainment
6.6
Food
6.5
MUC
SFO
Excellent 10.0

Pros: Great crew. Modern plane, excellent legroom with a payment of €100. I’m 194cm and could barely reach seat in front with my feet. Food very good, Bathrooms downstairs large and always was available. Entertainment excellent.

Cons: Nothing really.

HNL
SFO
Okay 5.3

Pros: Smooth flight no delays

Cons: Seats uncomfortable and plane too cold. United plane seats are the worst!

POP
EWR
Excellent 10.0

Pros: We were able to use a friend’s first class companion upgrade

Cons: Nothing

ORD
LIT
Okay 5.6

Pros: The flight attendant was amazing and tried to compensate for the other problems of the flight.

Cons: The air conditioner was broken so the entire flight was extremely hot. The plane was so small that the engine vibrated the seats the whole time. It was miserable to be on the flight.

IND
IAD
Poor 0.0

Pros: Nothing

Cons: If flights was on time I would not have to miss connecting flight in Dulles I had to stay for 22 hours in Indianapolis to be rerouted

Wed, 18 Sep
GLA
Glasgow Intl
ONT
Ontario
18h 44m
Mon, 23 Sep
ONT
Ontario
GLA
Glasgow Intl
27h 06m
£962
Trip: 6 days
7.1GoodShow reviews
Overall 7.1 Good
Based on 64,628 reviews
Overall
7.3
Boarding
7.4
Comfort
7.0
Crew
7.7
Entertainment
6.6
Food
6.5
DEN
MTJ
Okay 5.6

Pros: Crew was ok

Cons: Had to wait in plane for over 1/2 hour coming and going to Denver!!!

DEN
GJT
Mediocre 3.2

Pros: The reps at customer service were very nice and helpful. Kudos to them

Cons: I missed my flight to Grand Junction the night before because my plane from Dulles was delayed. So, consequently I had to spend the night in Denver. I was not pleased with that at all.

ORD
LEX
Okay 4.0

Cons: Not sitting for an hour on the runway with no A/C.

IAH
MUC
Excellent 8.0

Pros: Great crew and pilot

Cons: It would be great if childless flights were offered eventuall

CLE
DEN
Okay 4.0

Pros: Nothing

Cons: Not sticking me next to a 400 pound man

Sun, 29 Sep
LHR
London Heathrow
ONT
Ontario
14h 25m
Mon, 14 Oct
ONT
Ontario
LHR
London Heathrow
16h 55m
£1059
Trip: 16 days
7.1GoodShow reviews
Overall 7.1 Good
Based on 64,628 reviews
Overall
7.3
Boarding
7.4
Comfort
7.0
Crew
7.7
Entertainment
6.6
Food
6.5
LHR
SFO
Excellent 8.6

Pros: Food has gotten much better than maybe 10 years ago? Decent quantity and taste. Food is heated.

Cons: Boarding took longer than usual but they did announce that the gate we were assigned was not setup for that plane.

AMS
ORD
Good 6.0

Cons: flight was late close to 4 hrs

SFO
SAN
Excellent 9.5

Pros: Seats, flight attendant

Cons: Boarding is still a bit of a mess given how many people are in Group 1 or better.

PDX
ORD
Good 6.0

Pros: The crew was very kind and welcoming.

Cons: The seats are much tighter than Southwest and Virgin. My husband and I are taller (6' and 5'9" respectively) and our knees kept bumping the seats in front of us.

IAD
IND
Poor 0.0

Pros: Nothing

Cons: Flight was canceled Costumer service was terrible Had to weigh 26 for flight to Indianapolis

Sun, 6 Oct
LHR
London Heathrow
ONT
Ontario
15h 24m
Sun, 20 Oct
ONT
Ontario
LHR
London Heathrow
13h 08m
£1081
Trip: 15 days
7.1GoodShow reviews
Overall 7.1 Good
Based on 64,628 reviews
Overall
7.3
Boarding
7.4
Comfort
7.0
Crew
7.7
Entertainment
6.6
Food
6.5
NRT
IAD
Okay 4.3

Pros: Boarding was fast and landed on time.

Cons: The temperature was too cold to get comfortable. I had on a jacket and a blanket, drank hot tea and still managed to get a cold after leaving the plane. Also the food wasn’t good.

LAX
LHR
Excellent 8.6

Pros: The entertainment system and hardware of the plane is pretty good.

Cons: Staffs' interaction with customers. Perhaps be more attentive from time to time.

MUC
SFO
Excellent 10.0

Pros: Great crew. Modern plane, excellent legroom with a payment of €100. I’m 194cm and could barely reach seat in front with my feet. Food very good, Bathrooms downstairs large and always was available. Entertainment excellent.

Cons: Nothing really.

ORD
CID
Excellent 9.0

Pros: Everything

Cons: Perfect

CLT
ORD
Good 7.3

Pros: Crew, snacks, entertainment

Cons: Delayed:( Seats were so hard

Thu, 22 Aug
LHR
London Heathrow
ONT
Ontario
14h 26m
Tue, 3 Sep
ONT
Ontario
LHR
London Heathrow
12h 50m
£1244
Trip: 13 days
7.1GoodShow reviews
Overall 7.1 Good
Based on 64,628 reviews
Overall
7.3
Boarding
7.4
Comfort
7.0
Crew
7.7
Entertainment
6.6
Food
6.5
IND
IAD
Poor 0.0

Pros: Nothing

Cons: If flights was on time I would not have to miss connecting flight in Dulles I had to stay for 22 hours in Indianapolis to be rerouted

ORD
LAX
Okay 4.3

Pros: The crew was cordial but could have been more pleasant. Seats were horrible and the bathroom was smelly.

Cons: Some type of air deodorizer in the bathroom and crew with a smile.

BTV
IAD
Okay 5.2

Pros: The crew was typical, the seat was on the aisle, which I prefer, but kind of in the way and I kept hitting my head.

Cons: The snacks are not good at all, next time I'll take my own. They should just quit serving them and charging us for them.

EWR
ATL
Excellent 10.0

Pros: Flight landed early

DEN
GJT
Mediocre 3.2

Pros: The reps at customer service were very nice and helpful. Kudos to them

Cons: I missed my flight to Grand Junction the night before because my plane from Dulles was delayed. So, consequently I had to spend the night in Denver. I was not pleased with that at all.

Tue, 20 Aug
LHR
London Heathrow
ONT
Ontario
14h 26m
Mon, 26 Aug
ONT
Ontario
LHR
London Heathrow
12h 49m
£1247
Trip: 7 days
7.1GoodShow reviews
Overall 7.1 Good
Based on 64,628 reviews
Overall
7.3
Boarding
7.4
Comfort
7.0
Crew
7.7
Entertainment
6.6
Food
6.5
SLC
EWR
Mediocre 2.6

Pros: United- I cannot believe that the computer assigned seats in the last row since we have been United/Continental frequent fliers for over 30 years. We will always choose Delta over United based on our experience on Saturday/Sunday.

GSP
IAD
Excellent 8.5

Pros: Crew friendly and helpful.

Cons: Delayed after boarding due to lightning ground stop. Had to deplane and reboard. Almost 2-hour delay because gate agent had to rebook several people on the spot.

IAD
IND
Poor 0.0

Pros: Nothing

Cons: Flight was canceled Costumer service was terrible Had to weigh 26 for flight to Indianapolis

ORD
CID
Excellent 9.0

Pros: Everything

Cons: Perfect

LAX
DEN
Excellent 10.0

Pros: Love United’s service. Nothing to complain about.

Thu, 22 Aug
LHR
London Heathrow
ONT
Ontario
14h 26m
Fri, 6 Sep
ONT
Ontario
LHR
London Heathrow
12h 50m
£1274
Trip: 16 days
7.1GoodShow reviews
Overall 7.1 Good
Based on 64,628 reviews
Overall
7.3
Boarding
7.4
Comfort
7.0
Crew
7.7
Entertainment
6.6
Food
6.5
POP
EWR
Excellent 10.0

Pros: We were able to use a friend’s first class companion upgrade

Cons: Nothing

MCI
SFO
Mediocre 2.4

Pros: Getting off the plane.

Cons: First, it was a big ordeal to get seats together, traveling with 3 children. Seats did not recline. No movie screen, entertainment. Weren’t allowed a carryon, only under seat. Will not fly united again.

IAD
DEN
Mediocre 3.2

Pros: Not much, don't really like flying at night. The crew was nice enough.

Cons: Our flight to Denver was delayed by 3 hours, so I had to wait for 5 hours. Supposedly we were waiting for another plane because the original plane had a damaged wing. Who knows if these things are true. Maybe they just don't have enough pilots. I missed my connecting flight. Less time unboarding

IND
IAD
Excellent 10.0

Pros: The crew went out of their way to ensure the comfort of passengers.

Cons: No complaints

LIS
IAD
Good 7.3

Cons: The touch technology for the entertainment system was not user friendly and rarely responded immediately to the touch. It discouraged me from using the entertainment system.

Sat, 23 Nov
LGW
London Gatwick
ONT
Ontario
27h 25m
Thu, 28 Nov
ONT
Ontario
LGW
London Gatwick
32h 40m
£5355
Trip: 6 days
7.9GoodShow reviews
Overall 7.9 Good
Based on 3,480 reviews
Overall
8.0
Boarding
8.1
Comfort
7.8
Crew
8.3
Entertainment
8.0
Food
7.5
KUL
TPE
Excellent 8.0

Pros: Nice space on the seat!

Cons: Washroom could’ve been bigger

SGN
TPE
Excellent 8.3

Pros: Yes the crew was amazing and the seat

Cons: As long as nothing bad happens that is plenty good enough.

TPE
YVR
Excellent 8.6

Pros: Good staff and very helpful

Cons: Not much variety of food in a long flight

YVR
TPE
Excellent 10.0

Pros: Yes, and yes

Cons: More new movies selection

MNL
TPE
Excellent 8.6

Pros: In-flight was confortable.

Cons: Food options aren't that familiar but ok to the taste anyway. :)

Thu, 8 Aug
LHR
London Heathrow
ONT
Ontario
15h 34m
Sun, 25 Aug
ONT
Ontario
LHR
London Heathrow
12h 49m
£1653
Trip: 18 days
7.1GoodShow reviews
Overall 7.1 Good
Based on 64,628 reviews
Overall
7.3
Boarding
7.4
Comfort
7.0
Crew
7.7
Entertainment
6.6
Food
6.5
ORD
LIT
Okay 5.6

Pros: The flight attendant was amazing and tried to compensate for the other problems of the flight.

Cons: The air conditioner was broken so the entire flight was extremely hot. The plane was so small that the engine vibrated the seats the whole time. It was miserable to be on the flight.

LAX
ORD
Okay 5.2

Cons: For being a red-eye flight, it was very annoying to have some of the crew members in the back carrying on and laughing very very loudly.

AMS
IAD
Excellent 10.0

Pros: Our tickets did not come with seat assignments. Some kind soul, (the nice young lady who checked us in at the airport perhaps?) assigned us two seats together near the front in economy plus. We really enjoyed those spacious, convenient seats! Also, the entertainment (movies) were free and recent.

Cons: Honestly, nothing. This was one of our best flights home from Europe with United.

SBA
DEN
Excellent 10.0

Pros: Crew was very courteous and professional.

EWR
SFO
Mediocre 2.0

Cons: Over 6 hours of delays

Fri, 19 Jul
LHR
London Heathrow
ONT
Ontario
21h 33m
Mon, 22 Jul
ONT
Ontario
LHR
London Heathrow
13h 18m
£2688
Trip: 4 days
7.1GoodShow reviews
Overall 7.1 Good
Based on 64,628 reviews
Overall
7.3
Boarding
7.4
Comfort
7.0
Crew
7.7
Entertainment
6.6
Food
6.5
IND
IAD
Poor 0.0

Pros: Nothing

Cons: If flights was on time I would not have to miss connecting flight in Dulles I had to stay for 22 hours in Indianapolis to be rerouted

EWR
MSP
Mediocre 3.6

Pros: The crew was amazing. Very helpful to the best of their abilities.

Cons: To start off with. Next time they change the gates, all passengers should get a email. Maybe an ounce it over loud speaker in airport. So we won't miss our flight. secondly. Our flight was stuck on msp runway for 1 hour n 45 minutes before we were able to pull in to a gate to get off. No open gat

ORD
LAS
Excellent 8.6

Pros: Crew very professional and provided excellent service.

Cons: Boarding process chaotic.

IAD
DEN
Mediocre 3.2

Pros: Not much, don't really like flying at night. The crew was nice enough.

Cons: Our flight to Denver was delayed by 3 hours, so I had to wait for 5 hours. Supposedly we were waiting for another plane because the original plane had a damaged wing. Who knows if these things are true. Maybe they just don't have enough pilots. I missed my connecting flight. Less time unboarding

LAX
HNL
Mediocre 3.3

Pros: The crew was very friendly, the seats were uncomfortable and the air cabin was very cold.

Cons: The flight was delayed, cancelled then on again. Communication regarding the flight changes were very confusing and had guest running though the airport not knowing what to do. My suitcase was busted and destroyed.There were not enough blankets for everyone in the cold plane. Horrible experience.

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