LON - YOW

£188 Find Cheap Flights from London to Ottawa

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from London to Ottawa departing on 5/5. 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
1 adult, Economy, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to Ottawa

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from London to Ottawa.
These are the airlines KAYAK users have selected most often from within our search results in flight searches from London to Ottawa.
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Everything you should know

Cheapest return fare
£352
Typical prices: £495-£411
Air Transat
Fri 4/9Fri 18/9
LGW - YOW • Direct
Cheapest one-way flight
£188
Multiple Airlines
Tue 5/5
STN - YOW • 3 stops
Top airlines
Cheapest • from £352 (return)
Best reviews • 7.8 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Direct flights
Every day
You can fly direct with Air Canada and Air Transat. Average duration is 7h 57m
Direct flights
Direct flights
+1
+1
Direct flights
Direct flights
+1
Top routes
Cheapest • 3% average savings
Most popular
Insights
Insights
Insights
Insights
Avoid delays
Most punctual • 89% on-time
Best time • Fewest delays
Insights
Insights
Insights
Insights
Top stopover airports
Cheapest • Avg £531 (return)
Shortest trip • 9h 36m (one-way)
Insights
Insights
Insights
Insights
When to book
in advance
Our data shows that travellers who book at least 5 weeks in advance save around 9% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
Cheapest • 16% price drop
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
Start a new search
KAYAK searches hundreds of sites at once to find you the best travel deals.
We hope you love your trip to Ottawa!
Flight Deals
Booking Insights
Flight Deals

Cheap Flights from London to Ottawa (LON-YOW)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for return flights from London to Ottawa 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.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent return flight deals from London to Ottawa

Fri, 4 Sep - Fri, 18 Sep
Air Transat Logo
09:40 - 12:40
LGW
-
YOW
8h 00mdirect
Air Transat Logo
19:40 - 07:55
YOW
-
LGW
7h 15mdirect
£352Air Transat
Fri, 15 May - Fri, 22 May
Air Transat Logo
09:40 - 12:40
LGW
-
YOW
8h 00mdirect
Air Transat Logo
19:40 - 07:55
YOW
-
LGW
7h 15mdirect
£353Air Transat
Sun, 14 Jun - Fri, 19 Jun
Air Transat Logo
09:40 - 12:40
LGW
-
YOW
8h 00mdirect
Air Transat Logo
19:40 - 07:55
YOW
-
LGW
7h 15mdirect
£357Air Transat
Tue, 9 Jun - Tue, 23 Jun
Multiple Airlines Logo
08:30 - 00:20
STN
-
YOW
20h 50m
2 stops
Multiple Airlines Logo
06:55 - 13:25
YOW
-
STN
25h 30m
2 stops
£363Multiple Airlines
Wed, 3 Jun - Wed, 10 Jun
Multiple Airlines Logo
06:30 - 17:35
STN
-
YOW
16h 05m
3 stops
Multiple Airlines Logo
06:55 - 20:30
YOW
-
STN
32h 35m
2 stops
£363Multiple Airlines
Fri, 15 May - Wed, 20 May
Air Canada Logo
09:30 - 13:56
LHR
-
YOW
9h 26m
1 stop
Air Canada Logo
15:00 - 06:30
YOW
-
LHR
10h 30m
1 stop
£371Air Canada
Fri, 15 May - Tue, 19 May
Air Canada Logo
09:30 - 13:56
LHR
-
YOW
9h 26m
1 stop
Air Canada Logo
16:00 - 09:35
YOW
-
LHR
12h 35m
1 stop
£374Air Canada
Sun, 21 Jun - Sun, 28 Jun
Lufthansa Logo
18:30 - 22:10
LCY
-
YOW
32h 40m
2 stops
Lufthansa Logo
19:30 - 08:40
YOW
-
LCY
32h 10m
2 stops
£599Lufthansa
Mon, 17 Aug - Mon, 14 Sep
KLM Logo
07:45 - 17:35
LCY
-
YOW
14h 50m
2 stops
KLM Logo
17:10 - 09:30
YOW
-
LCY
11h 20m
2 stops
£613KLM
Mon, 8 Jun - Mon, 29 Jun
Lufthansa Logo
09:15 - 19:11
LCY
-
YOW
14h 56m
2 stops
Lufthansa Logo
15:10 - 08:40
YOW
-
LCY
12h 30m
2 stops
£688Lufthansa
Booking Insights

KAYAK’s insights & trends for London to Ottawa flights

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

How much is a return flight from London to Ottawa?

This analysis is based on the cheapest return trip price found on KAYAK in the last 12 months by searching for a flight from London to Ottawa departing in September.

What is the cheapest London to Ottawa flight route?

Data is based on round-trip flight searches on KAYAK over the past month.

The cheapest return flight from London to Ottawa costs £346 on the route between London Gatwick Airport (LGW) and Ottawa (YOW). Over the past month, this route was, on average, 3% cheaper than other London-Ottawa routes. The most popular route is between London Heathrow Airport (LHR) and Ottawa (YOW).

What’s the cheapest day of the week to fly from London to Ottawa?

The average price of all round-trip flights from London to Ottawa clicked on KAYAK for each day over the last 12 months.

For London to Ottawa, Friday is the cheapest day to fly on average and Saturday is the most expensive. Flying from Ottawa back to London, the best deals are generally found on Wednesday, with Sunday being the most expensive.

What is the cheapest month to fly from London to Ottawa?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from London to Ottawa, 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 from London to Ottawa is June, where tickets cost £461 (return) on average. On the other hand, the most expensive months are December and August, where the average cost of round-trip tickets is £662 and £628 respectively.

Can I save money by flying with a stopover from London to Ottawa?

The average return price for all direct flights, flights with one stopover, and flights with two stopovers for the route found by users searching on KAYAK in the last 2 weeks.

Yes, flying with a stopover may cost you more time, but you can also save money on the route, with a 1 stop stopover the cheapest option at £479 on average.

How far in advance should I book a flight from London to Ottawa?

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from London to Ottawa, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below average price on the flight from London to Ottawa, you should book around 5 weeks before departure, which saves you about 9% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 13 weeks before departure.

Good to know - Cheap tickets from London to Ottawa

Low seasonJanuary
Cheapest flight£188
Best time to beat the crowds (5% less expensive on average)
Most popular time to fly (6% more expensive on average)
Flight from London Stansted Airport to Ottawa

When to book flights from London to Ottawa

Are your dates flexible? Find out the best times to travel from London to Ottawa 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. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from London to Ottawa

  • Can I take a direct flight between London airports and Ottawa Airport?

    Unfortunately you cannot fly directly between these two cities, but there are plenty of indirect routes you can take that only require one stop. You can fly, for example, with WestJet from London Gatwick Airport, which requires a transfer at Toronto Pearson International first. Alternatively, you could fly from Heathrow Airport with Air Canada, which also has a change in Toronto.

  • Can I fast track through security at London airports?

    If you are going to be in a rush at the airport, or should you be travelling at peak times, there is always the option to fast track through security. You need to book at least 24h in advance, and it will cost about £4 at Luton and around £5 at Stansted and Gatwick. For flights from Heathrow, it costs approximately £12.50 to fast track through security.

  • Can I change my currency at London airports?

    Once you have arrived at London airports for your flight, you can use currency exchange bureaus to change your money to Canadian Dollars. If you fly with Air Canada from Heathrow, you will most likely depart from Terminal 2, so you can access the Travelex bureaus and ATMs. From other airports with indirect flights, you can use an International Currency Exchange store or ATM. These are situated prominently in the terminals, so they will be easy to find.

  • How do I get to the city centre from Ottawa Airport?

    It’s easy to get from the airport to the centre as there are many methods of transport to choose from. You can get the Ottawa Airport Bus route 97 from the front of the building. This takes about 30min and costs approx. C$3.30 (£1.90). Alternatively, you could get a taxi from the taxi rank outside the front of the terminal building which takes about 15min and costs around C$29 (£16.75).

  • Are there luggage storage facilities available at Ottawa Airport?

    The Baggage Storage Service at Ottawa Airport (YOW) is located on Level One at the south end of the passenger terminal building. You will be charged a fee of around C$5 (£2.97) per bag per day, along with an additional C$8 (£4.76) charge for overnight storage.

  • Which flights from London to Ottawa help me reduce my CO2 emissions?

    To reduce your carbon emissions when flying from London to Ottawa, you can find more environmentally friendly flights with Air Canada and Lufthansa who both operate flights via Montreal Pierre Elliott Trudeau Airport (YUL). These flights can cut your CO2 emissions by 45%.

  • Which are the cheapest car parks at London Heathrow Airport?

    If you’re looking for the cheapest car parks at London Heathrow Airport, the Long Stay Car Park is your best option. For a 7-day period, charges come to around £115.00 when pre-booked online. This also includes a free shuttle service to the terminal building that takes around 10-20 minutes. When booking, make sure to select your terminal of departure.

  • Do I need a visa to travel from London to Ottawa?

    British nationals need to apply for a visa in order to enter Canada for visits of six months or less. However, you will obtain an eTA (Electronic Travel Authorisation), which can be done online and only takes a few minutes, costing around C$7 (£4.15).

  • What is the cheapest flight from London to Ottawa?

    In the last 3 days, the lowest price for a flight from London to Ottawa was £188 for a one-way ticket and £352 for a return.

  • Which airports will I be using when flying from London to Ottawa?

    There are 5 airports in London (London City, London Gatwick, London Heathrow, London Luton, and London Stansted.) and only 1 airport in Ottawa (Ottawa). The cheapest flights are generally found on the London Gatwick Airport to Ottawa flight route.

  • Which airlines offer Wi-Fi service onboard planes from London to Ottawa?

    Only Lufthansa offers inflight Wi-Fi service on the London to Ottawa flight route.

  • Which aircraft models fly most regularly from London to Ottawa?

    The Boeing 787-9 Dreamliner is the aircraft model that flies most regularly on the London to Ottawa flight route.

  • Which airline alliances offer flights from London to Ottawa?

    SkyTeam, and Star Alliance are the airline alliances operating flights between London and Ottawa, with SkyTeam being the most commonly used for this route.

  • On which days can I fly direct from London to Ottawa?

    You can catch a direct flight from London to Ottawa on on Monday, Wednesday, Thursday, Friday, Saturday, and Sunday.

  • Which is the best airline for flights from London to Ottawa, Air Transat or KLM?

    The two airlines most popular with KAYAK users for flights from London to Ottawa are Air Transat and KLM. With an average price for the route of £492 and an overall rating of 7.8, Air Transat is the most popular choice. KLM is also a great choice for the route, with an average price of £458 and an overall rating of 7.8.

  • How does KAYAK find such low prices on flights from London to Ottawa?

    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 from London to Ottawa.

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

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

  • What is the Hacker Fare option on flights from London to Ottawa?

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

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

    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 Ottawa from London up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

KAYAK’s top tips for finding a cheap flight from London to Ottawa

  • Looking for a cheap flight from London to Ottawa? 25% of our users found flights on this route for £615 or less one-way and £464 or less round-trip.
  • There are two airports in London that serve the route to Ottawa International Airport (YOW) with one stop. With London Heathrow (LHR) being located so centrally, it makes it very convenient for those travelling on business. Whereas Gatwick is great for those coming from the south of London.
  • Save time on the day of your flight by staying in an airport hotel the night before. If you're flying with Air Canada from Heathrow, then you can opt for a hotel such as Aerotel, which is only a short walk from Terminal 2. At Gatwick you could stay at Hilton, which is also close to the terminal building.
  • From Ottawa Airport, it is easy to continue your journey to nearby cities, such as Cornwall in about 70min and Kingston in about 2h, which makes it a great airport if you are planning to continue your journey to other Canadian cities.
  • Before your flight to Ottawa Airport, you can relax in a peaceful lounge, such as the Aspire Lounges in Heathrow Airport, Gatwick Airport and Luton Airport (LTN), which provide complimentary snacks and Wi-Fi from about £25 per person. The Escape lounge in Stansted (STN) offers similar benefits for about £20. However, there are no lounges at London city Airport.
  • You can call up 48h in advance of your flight to get mobility assistance at London Airports. They will either greet you on arrival or you can locate the assistance reception desks in the check-in zones of the departures hall.
  • If you're interested in purchasing Duty-Free items before your flight but have limited time, consider exploring the convenient online 'Click & Collect' service. This service allows you to buy products in advance, prior to arriving at the airport, and collect them before your flight.
  • If you want to upgrade your flight from London to Ottawa to Business Class or an equivalent, but don’t want to pay too much, then check out TAP AIR Portugal. They provide the Executive Class service at a very reasonable price from London Heathrow Airport (LHR) to Ottawa Airport (YOW) via stopovers in Lisbon and Toronto.

Prefer to fly direct from London to Ottawa?

 
Direct data is based off flight results for the next 60 days. Find direct flights from all airlines flying direct from London to Ottawa.
Find which airlines fly direct from London to Ottawa Airport, which days they fly and book direct flights.

Direct departures

London to Ottawa

Monday

Air Canada

Air Canada

Tuesday

Air Transat

Air Transat

Wednesday

Air Canada

Air Canada

Thursday

Air Canada

Air Canada

Friday

Air Transat

Air Transat

Saturday

Air Canada

Air Canada

Sunday

Air Transat

Air Transat

See more direct flights

Direct returns

Ottawa to London

Monday

Air Canada

Air Canada

Tuesday

Air Transat

Air Transat

Wednesday

Air Canada

Air Canada

Thursday

Air Canada

Air Canada

Friday

Air Transat

Air Transat

Saturday

Air Canada

Air Canada

Sunday

Air Transat

Air Transat

See more direct flights

Reviews of the top 5 airlines flying from London to Ottawa

 
See real verified KAYAK customer reviews for airlines flying from London to Ottawa. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from London to Ottawa? 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 verified KAYAK customer reviews.
7.8
Air TransatOverall score based on 539 reviews
7.1Entertainment
8.5Crew
7.3Comfort
7.9Boarding
6.8Food
Airline reviews

Crew was good, helpful. Flight ran on time.would have liked to take airtransat home to MTL. But the price back from San Jose Costa Rica was MUCH more expensive than the flight from MTL to San Jose c.r.

10.0 ExcellentMiriam, Apr 2026
SJO - YUL
Read more Air Transat reviews

Crew was good, helpful. Flight ran on time.would have liked to take airtransat home to MTL. But the price back from San Jose Costa Rica was MUCH more expensive than the flight from MTL to San Jose c.r.

i was not able to take my flight because the information i needed to book my dog correctly was not provided

We are a senior couple (70+) and chose emergency exit seats so we would have 2 seats together and neither of us had to sit in a middle seat. My husband is type 1 diabetic on an insulin pump and I monitor his blood sugar levels. I am 5'9" and 250 lbs and found the seats extremely uncomfortable. Toward the end of the flight I developed diarrhea which lasted a full 24 hours.

They never sent me a confirmation to say my flight time had changed so I cut my holiday short by 6 hours Had to pay over 50 American for my luggage to be checked on the way home and that’s more that it cost on the way there. Arbitrarily charging more for the same thing when the passenger has no options is shady The cabin was an icebox going there and back, if all the passengers have their gloves on and their hoods up that should be an obvious sign to turn up the heat

I was very nice to arrive earlier than scheduled. Very much appreciated. No issues with flight. All was good.

The on-board crew were professional and friendly and made the trip feel like we were taken care of well. The gate for the flight departure changed three times...not great but not terrible. Considering it was the day of the New Jalisco Cartel mayhem, we can't really complain.

The entertainment system was down; food by purchase only; several people did not receive their luggage. No one answers at the local office or online about the luggage.

The Turkish was good . I had a problem with air Transat terrible experience for me

I did not like I have been charged for my carry on

Onward flight was okay. return from Lisbon was poor as we missed our flight due to a long line at the passport control. Air Transat made no effort to accommodate us even though we were at the passport control 40 minutes prior to the departure.

Seating and zone. The minor I went with didn’t even seat close to me

My seat 3G did not go down fully and the buttons were not working properly

Food has been disappointing in both legs of flight to india

Great staff great experience, made a 2 hour delay very bearable

Great staff, great experience, made a 2 hour delay very bearable

Food was the worst I’ve had on a VA flight. Normally it’s a lot better

I was my pleasure to fly virgin on my birthday for my first solo trip ever 🫶🏼

These are one of the older seat arrangements facing away from the windows! Not particularly convenient sets. No storage spaces. NO COAT HANGING HOOKS. Inconvenient business class seat compared to any other airlines of similar class. Staff are excellent! Extremely professional, friendly. Food is good too.

Overall, flight was excellent but check in was very slow for Premium Economy. Economy queue was shorter but we weren't allowed to use it.

The staff was not very polite but the flight was very very nice and comfortable and the entertainment was great

Middle seats SUCK!!!! I paid more money than I should have because of your terrible site Kayak.com. I'll try to use your competitors going forward. I am so disappointed you would play off business class.com as business class seats

The boarding was efficient. The entertainment system was a bit unstable but Air France has a good selection of movies.

They lost my bag and I still haven’t received it yet

They lost my bag and I still have not received it

Communication on the delay, rebooking and how to get a hotel was poor. Mails, airport check-in and transfer desk said different things.

Not consistent with the food quality (I mean taste not freshness)

I don’t like that an equipment change caused my seat to change from 23A to 44A. The boarding was also delayed. The crew were excellent, however and very attentive. The food was not bad.

Worst airlines either. First leg was delayed because of crew not available. My connection was missed so they booked me automatically the next day! But, impossible to get anyone on site, web site does not let me access my reservation anymore, confirmed by useless agents over the phone. My 2-leg trip with part in business class arriving at 4:10pm ends up in an awful 3-leg arriving at 9pm the next day with no way to even choose the seats and of course at the very end of the plane. I can understand problems arrive but the way Air France handle it is just unacceptable. You are on your own. Apparently getting you to your destination is the only thing they consider their duty. The customer experience and fatigue is none of their concern. And I have a status with them. I will reconsider my priorities when flying with Air France and encourage everyone to do the same.

Our flight crew were terrific. And they handle a difficult passenger with finesse.

Excellent, Lima to Paris. But Paris to Amsterdam, delayed, missed my flight and KLM treated its missed flights passengers very badly, terribly bad. No hotel accommodation given. Passengers were told to find their own hotel accommodation and claim at reasonable rate and left the booth and literally with armed Police Officers listening to passengers complains. For three hours, after moving by Uber from hotel to hotel and calling and booking online, no hotel was available. I had to return to the airport and seat/sleep on the benches, suffering the cold, and rats running around until my new allocated flight the next day. It was the most terrible KLM treatment even seen and being a Business Class passenger. Still mentally suffering to date as a result.

Very tight seats - no legroom at all, very tight to the person in front of you. If you have basic fare, you are loading zone 6 regardless of where you are sitting in the plane - meaning even as a middle aisle person at the front of the plane, I had to get people to get up and let me in as they had boarded earlier. Having to pay for a carry on is criminal. I am a frequent flyer, and air Canada has now joined the list of other terrible North American Airlines.

We travelled from London to Halifax. Customer service was excellent.fron the day we booked until arriving. The gate was only a short frombthe waiting area and walk Boarding was efficiently handled and plane took off on time. The service on the plane was very good. Fool an acceptable drandard Only downside was that the legroom was tight for anybody just over 6ft tall and am usually able to travel without difficulty. I will definitely fly with Air Canada again but next time pay for extr space.

Delayed by 5+ hours and they give a voucher for only $20 CAD which isn’t even redeemable at any place with edible food. Then took almost an hour to clean craft after it landed. And nonsensical boarding delayed even further. We didn’t leave until 1:30am….

Was disappointed when landing in Canada was made to wait for over 1 hour with several other parents and babies for our strollers . The expectation was that the gate checked strollers would be there when exiting aircraft. This was not the case we were told to walk to a point and wait for them . After being left there and not being updated we were met with very hostile and rude air canada staff . There where no apologies or understanding even though all the children where very uncomfortable and the parents very frustrated as you can imagine . Instead the air canada staff at the airport where very rude and made an already frustrating situation much worse instead of trying to assure the parents that that were making effort to fix the situation. One gentleman in particular was very rude to some parents telling them to move when they were simply seeking information. He made the other parents including myself feel very uncomfortable. He also told a gentleman he was capturing images of everyones boarding pass when this was untrue as he was only taking a photo of the gentleman pass which was strange.

I travelled in Business class for the first time and wish I could do that again.

It was good, seating was a little tight apart from that all was well.

I liked the flight but the check in was horrendous. I have booked with you before but not ever had to pay extra for luggage, it was not clear on booking, I didn't know there was different categories of economy that meant different allowances. So was alarmed when we had to pay a further £120 at the check-in at a point of not changing.

I wish they gave the earphones earlier rather than when we are already in flight.

Very nice staff members are very nice and friendly helpful

We were a little late pushing back ,but arrived a head of time.

The flight was delayed 7 hours and we were given 10 euros vouchers. This is ridiculous. The crew was not nice at all, they just did their job with serving food and drinks. Did not even apologize for the delay!!!!

Flight map did not work. Crew was great, food was good, plane took off on time and landed early. That's all I can ask.

Paid for exit row at the back of the plane. Window seat with lots of leg space. Food was inedible (as usual). Brought my own.

Missed flight. Requested assistance for my father and he did not receive it in Paris.

Business Class was very comfortable and the food and service was top notch.

The crew was very nice. The equipment on the 747 felt old.

As expected. Would have appreciated a 3-day headsup reminder as a reassurance that all is well.

Poor food on flight between Toronto and Stockholm Airport Toronto too crowded

The plane was late (as was my flight out from Birmingham the day before)

Business Class Configuration was excellent- private and comfortable. Crew and service were excellent. I really appreciate Air Canada cabin pressurization equal to an altitude of 8,000ft. Upon landing, I felt more alert and refreshed than typical for international flights

Everything you need to know for your flight from London to Ottawa

Other airlines flying from London to Ottawa

Flights from the other most popular airlines that fly from London to Ottawa according to KAYAK users. Prices are the lowest found on KAYAK over the last 7 days. Price and availability are not guaranteed.