LON - YOW

£273 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 15/12. 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

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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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

Wed, 19 Nov - Sun, 23 Nov
Multiple Airlines Logo
06:00 - 17:42LHR-YOW
16h 42m2 stops
Multiple Airlines Logo
10:20 - 07:10YOW-LHR
15h 50m2 stops
£399Multiple Airlines
Find Deal
Wed, 26 Nov - Wed, 3 Dec
Air Canada Logo
09:00 - 17:42LHR-YOW
13h 42m2 stops
Air Canada Logo
10:20 - 07:10YOW-LHR
15h 50m2 stops
£406Air Canada
Find Deal
Wed, 26 Nov - Wed, 3 Dec
Lufthansa Logo
11:10 - 22:18LHR-YOW
16h 08m2 stops
Lufthansa Logo
21:55 - 09:20YOW-LHR
6h 25mdirect
£443Lufthansa
Find Deal
Thu, 27 Nov - Thu, 4 Dec
Virgin Atlantic Logo
09:00 - 15:10LHR-YOW
11h 10m1 stop
Virgin Atlantic Logo
17:20 - 10:30YOW-LHR
12h 10m1 stop
£462Virgin Atlantic
Find Deal
Mon, 3 Nov - Mon, 10 Nov
Lufthansa Logo
13:25 - 14:07LHR-YOW
29h 42m1 stop
Lufthansa Logo
18:20 - 07:10YOW-LHR
31h 50m1 stop
£465Lufthansa
Find Deal
Tue, 11 Nov - Tue, 18 Nov
Virgin Atlantic Logo
08:55 - 15:20LHR-YOW
11h 25m1 stop
Virgin Atlantic Logo
17:20 - 08:00YOW-LHR
9h 40m1 stop
£471Virgin Atlantic
Find Deal
Tue, 11 Nov - Tue, 18 Nov
Air Transat Logo
11:40 - 00:39LGW-YOW
17h 59m1 stop
Air Transat Logo
18:55 - 09:45YOW-LGW
9h 50m1 stop
£483Air Transat
Find Deal
Tue, 11 Nov - Tue, 18 Nov
SWISS Logo
09:15 - 18:38LCY-YOW
14h 23m2 stops
SWISS Logo
10:50 - 08:45YOW-LCY
16h 55m2 stops
£494SWISS
Find Deal
Fri, 5 Dec - Mon, 8 Dec
SWISS Logo
09:25 - 19:18LCY-YOW
14h 53m2 stops
SWISS Logo
16:15 - 12:50YOW-LCY
15h 35m2 stops
£500SWISS
Find Deal
Sat, 15 Nov - Thu, 20 Nov
Air Transat Logo
11:40 - 00:39LGW-YOW
17h 59m1 stop
Air Transat Logo
18:55 - 09:45YOW-LGW
9h 50m1 stop
£503Air Transat
Find Deal

Everything you should know

Top airlines
Air Canada
Cheapest • from £406 (return)
Air Transat
Best reviews • 7.7 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Video guide: How to find cheap flights to Ottawa
Watch video
Watch video
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Top routes
LHR-YOW
Cheapest
LHR-YOW
Most popular
Insights
Insights
Insights
Insights
When to book
3 weeks
in advance
Our data shows that travellers who book at least 3 weeks in advance save around 7% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
January
Cheapest • 14% price drop
July
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
Direct flights
3 days a week
There are direct flights from London to Ottawa 3 days a week: Wed, Fri, Sun.
Direct flights
Direct flights
Direct flights
Direct flights
Cheapest return fare
£399
Overall average: £534
Multiple Airlines
Wed 19/11Sun 23/11
LHR - YOW • 2 stops
Cheapest direct flights
£466
Air Canada
Wed 19/11Sun 23/11
LHR - YOW • Direct
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KAYAK searches hundreds of sites at once to find you the best travel deals.
We hope you love your trip to Ottawa!
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.

Find cheap flights to Ottawa
Find cheap flights to Ottawa

Planning a trip from London to Ottawa? KAYAK’s data-powered insights will help you find cheap flights. Learn the best time to fly, how early to book your ticket, and other tips to secure great prices.

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 £382 on the route between London Heathrow Airport (LHR) and Ottawa (YOW). It is also the most popular route.

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, Monday 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 Monday, 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 January, where tickets cost £472 (return) on average. On the other hand, the most expensive months are August and December, where the average cost of round-trip tickets is £750 and £683 respectively.

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 3 weeks before departure, which saves you about 7% 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 seasonNovember
Cheapest flight£273
Best time to beat the crowds (8% less expensive on average)
Most popular time to fly (11% more expensive on average)
Flight from London Heathrow 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 £364 for a one-way ticket and £531 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 Heathrow Airport to Ottawa flight route.

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

    Air Canada, Lufthansa, Air France, and KLM offer inflight Wi-Fi service on the London to Ottawa flight route.

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

    The Boeing 777-300ER 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 £496 and an overall rating of 7.7, Air Transat is the most popular choice. KLM is also a great choice for the route, with an average price of £464 and an overall rating of 7.7.

  • 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 £631 or less one-way and £548 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

Wednesday

Air Canada

Air Canada

Friday

Air Canada

Air Canada

Sunday

Air Canada

Air Canada

See more direct flights

Direct returns

Ottawa to London

Wednesday

Air Canada

Air Canada

Friday

Air Canada

Air Canada

Sunday

Air Canada

Air Canada

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.
7.7
Air TransatOverall score based on 458 reviews
7.0Entertainment
6.7Food
7.3Comfort
8.4Crew
7.9Boarding
Airline reviews

Great flight great seats will absolutely fly with you again

10.0 ExcellentPatricia M, Oct 2025YEG - YUL
Read more Air Transat reviews

Great flight great seats will absolutely fly with you again

Porter airlines was good. I didn't have the best experience when booking through airfare assist however, as I got no final confirmation from them that the flight was booked until I called them. Even then, the confirmation code they gave me was incorrect and couldn't be used for check in. On a positive note airfare assist was actually picked up the phone relatively quickly when calling

The flight crew were very good, polite, and professional. Unfortunately, the rest of the experience left much to be desired. The food was extremely bland—almost tasteless. We chose the non vegetarian .The lasagna was just plain pasta with a tiny garnish and no seasoning. It felt like eating starch only, The bigger issue was with luggage and space. We boarded with three tickets, and while the seats in front of us were nearly empty, all the overhead compartments had already been filled by passengers boarding to the back. This left us and many others with no overhead storage for our carry-ons. Our bags couldn’t fit well under the seats either, which meant we lost the little legroom we had. The result was a horrible, cramped experience—sore knees, no space to stretch, and no way to rest or sleep comfortably. According to the crew this was a rather normal thing. It is obviously normal that people board with handbag and carry on but they should be only allowed to use their overhead compartment and under their seat not the way it is managed that all the spaces in the front of the plane being occupied by the people sitting way back in the plane.

Nice complete meal included and great services. Plus the plane was very clean.

Everything was horrible. On the day of my departure, I was denied check-in and boarding because my reservation only showed one of my last names, while my passport contains both. This minor discrepancy could have been easily corrected, but I was informed that no adjustment could be made. As a result, I lost not only my outbound flight but also my return flight and had to purchase a new ticket at a significantly higher cost.

This has been the worst experience I’ve ever had. Basically, I lost my round-trip tickets because one of my last names was missing, and you didn’t allow me to correct it. I had to purchase a full ticket again. Once I get home, I will start legal proceedings against you.

The crew were polite and courteous. The Pilot did an excellent landing. It was very smooth and gentle. My only regret is that I was charged twice for my luggage . The attendant gave me no receipt . I didn't realize until I was about to board. How can this be resolved? Thank you.

Very smooth flights Toronto to Rome and return. Crews were great, food was fine but very narrow seats and limited leg room. Aisle seats on our return helped with a bit more space.

YUL AIRPORT is the worst. 1 Hr to Get out of the plane, 1 Hr To Cross the Border. 1Hr waiting to be pick up curbside. Trafic is ubeliveble.

It’s ok just the boarding point is far too far

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.

3 hour delay but out of their control. App said I get vouchers but when I applied for them, they were nowhere to be found in my account

I bought business class tickets but the seats are exactly like economy with no comfort seats nor an empty seat next to me provided. Very poor, low quality airline.

I don't understand the concept of paying to get your personal luggage onboard and then asked to check it in.... either sell the space or don't, its a hassle to carry those all through the airport just to make a check in at the last minute.

The food was great and the service and attitude was amazing!!

Old airplanes small seats expensive tickets, not as expected overall and not comfortable according to the price

It was an OK flight with below mediocre service by their flight attendants

Wasted a lot of time trying to find the CDG lounge - it was not next to the connecting flight gate like the Air France staff said.

My experience was good overall, the quality of the food really decreased! There used to be a choice between meat and fish now it’s between chicken and pasta! In the choices of entertainment meditation has been added which is very good. Soft chair workout to improve blood circulation and avoid phlebitis should be added.

The only reason the overall rating wasn't "excellent" was due to problems in claiming luggage. The bags are delivered to the main area (Cinta 35) for domestic passengers, but to a DIFFERENT ROOM for international arrivees. After waiting 30 minutes, someone (who didn't appear to be from Air France or the airport) told us to go to another area. There we found our bags, which appeared to have been awaiting us for a while. We had to go through a bag check before leaving the airport. If we had been alerted to this possibility, or better yet, been to go directly to Cinta 34, we could have eliminated quite a bit of waiting.

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

Great crew - old style upper class seats on the older fleet now feels dated

Premium economy more comfortable than economy, but not by much. Did was awful, do not try the omelette. Flight crew were helpful. Flight was delayed by over an hour. Overall but bad, arrived safely and thank God.

Food was excellent. Service was very good. Staff was very helpful to all passengers.

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 787 Dreamliner that we flew on was relatively new and a nice aircraft. We flew on a 777 which was noticeably older and the seats were average” but the 787 was very nice, especially for the price. No window blinds anymore, instead high tech adjustable polychromatic glass!! Nice.

the seats aren't the most comfy -- too little padding and I could feel whatever the passenger behind me was doing. Otherwise, it's all good.

This flight didn't happen for me because of overbooking.

Everything was simple and easy. The lady at the gate was super friendly, I wish I had her name to share. She's a little older, dark-haired. You can tell she likes her job and would be a great influence on any young people training with her.

During the pre-departure safety briefing, the flight attendants rushed through the mandatory safety announcements in both official languages, making it difficult for passengers to clearly understand the instructions. Given the importance of these messages for passenger safety, this lack of clarity was concerning. Perhaps use a recoded message to alleviate this concern. Additionally, the flight attendants appeared to lack the professional attentiveness typically expected during a flight. Rather than focusing on timely and courteous service, they seemed more engaged in personal conversations than in addressing the needs of passengers. I hope this feedback is taken constructively and helps in maintaining the high standards of professionalism and care that travelers expect from a national carrier: AC.

an absolute disaster and nightmare on air condition. IT WAS FREEZING!! everyone around us had hats, hoodies, gloves outdoor jackets on. that segment of the aircraft had a fault I assume...no amount of suggestion to turn down the air con helped. otherwise all good.

Everything was very good, short delay Toronto to Regina on my return to Canada but not a big deal. Thanks Kayak, Dr. Ian Stewart

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

Hard to use tables and TV screens interfere with the enjoyment of flight experience. Other than that it was a smooth and comfortable ride and we were well taken care of.

Excellent flight overall. Lufthansa Business service was excellent with great cabin crew and very good food and wines. The seat comfort was excellent. Only a slight reduction in score due to the 747-400 being a relatively loud aircraft these days.

The flight was delayed by an hour. Made the connection uncomfortably tight.

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.

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