LON - YOW

C$ 366 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 17/6. 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, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from London to Ottawa, as well as popular online travel agencies
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Everything you should know

Cheapest round-trip
C$ 683
Typical prices: C$ 935-C$ 714
Air Transat
Fri 5/6Sun 14/6
LGW - YOW • Direct
Cheapest one-way flights
C$ 366
Multiple Airlines
Wed 17/6
LGW - YOW • 3 stops
Advice from real travellers
AI-powered summary based on content written by travel experts. AI can make mistakes.
Heathrow's long security lines mean arriving early.
Air Canada offers Wi-Fi on select flights to Ottawa.
Expert advice
Expert advice
Expert advice
Expert advice
Top airlines
Cheapest • from C$ 683 (round-trip)
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 • 18% average savings
Most popular
Insights
Insights
Insights
Insights
Avoid delays
Most punctual • 89% on-time
Best time • Fewest delays
Insights
Insights
Insights
Insights
Top layover airports
Cheapest • Avg C$ 754 (round-trip)
Shortest trip • 10h 09m (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 11% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
Cheapest • 79% price drop
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
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Flight Deals
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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 round-trip 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 round-trip flight deals from London to Ottawa

Fri, 5 Jun - Sun, 14 Jun
Air Transat Logo
9:40 a.m. - 12:40 p.m.
LGW
-
YOW
8h 00mdirect
Air Transat Logo
7:40 p.m. - 7:55 a.m.
YOW
-
LGW
7h 15mdirect
C$ 683Air Transat
Wed, 3 Jun - Fri, 12 Jun
Austrian Airlines Logo
6:00 a.m. - 5:11 p.m.
LHR
-
YOW
16h 11m
2 stops
Austrian Airlines Logo
8:05 p.m. - 11:50 a.m.
YOW
-
LHR
10h 45m
1 stop
C$ 683Austrian Airlines
Wed, 3 Jun - Wed, 17 Jun
Multiple Airlines Logo
6:00 a.m. - 5:11 p.m.
LHR
-
YOW
16h 11m
2 stops
Multiple Airlines Logo
3:00 p.m. - 6:30 a.m.
YOW
-
LHR
10h 30m
1 stop
C$ 685Multiple Airlines
Tue, 2 Jun - Mon, 15 Jun
Air Transat Logo
9:40 a.m. - 12:40 p.m.
LGW
-
YOW
8h 00mdirect
Air Transat Logo
4:00 p.m. - 7:55 a.m.
YOW
-
LGW
10h 55m
1 stop
C$ 685Air Transat
Thu, 8 Oct - Thu, 15 Oct
Air Canada Logo
8:45 a.m. - 10:35 a.m.
LHR
-
YOW
30h 50m
2 stops
Air Canada Logo
6:55 p.m. - 6:30 a.m.
YOW
-
LHR
6h 35mdirect
C$ 692Air Canada
Mon, 15 Jun - Mon, 22 Jun
Air Canada Logo
8:40 a.m. - 11:31 a.m.
LHR
-
YOW
31h 51m
2 stops
Air Canada Logo
8:50 a.m. - 9:00 p.m.
YOW
-
LHR
31h 10m
1 stop
C$ 693Air Canada
Wed, 3 Jun - Wed, 17 Jun
Multiple Airlines Logo
6:00 a.m. - 5:11 p.m.
LHR
-
YOW
16h 11m
2 stops
Multiple Airlines Logo
9:05 p.m. - 8:35 a.m.
YOW
-
LHR
6h 30mdirect
C$ 701Multiple Airlines
Wed, 29 Jul - Tue, 11 Aug
Lufthansa Logo
9:15 a.m. - 8:44 p.m.
LCY
-
YOW
16h 29m
2 stops
Lufthansa Logo
2:00 p.m. - 8:40 a.m.
YOW
-
LCY
13h 40m
2 stops
C$ 1,196Lufthansa
Tue, 16 Jun - Sun, 21 Jun
SWISS Logo
9:15 a.m. - 7:11 p.m.
LCY
-
YOW
14h 56m
2 stops
SWISS Logo
2:00 p.m. - 8:40 a.m.
YOW
-
LCY
13h 40m
2 stops
C$ 1,361SWISS
Tue, 10 Nov - Tue, 17 Nov
SWISS Logo
7:05 p.m. - 7:18 p.m.
LCY
-
YOW
29h 13m
2 stops
SWISS Logo
4:10 p.m. - 12:50 p.m.
YOW
-
LCY
15h 40m
2 stops
C$ 1,394SWISS
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 round-trip flight from London to Ottawa?

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

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 C$ 523 on the route between London Gatwick Airport (LGW) and Ottawa (YOW). Over the past month, this route was, on average, 18% cheaper than other London-Ottawa routes. 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.

When flying from London to Ottawa, you should consider leaving on a Wednesday and avoid Sundays if you are looking for the best rates. For your return to London, you’ll find the best rates on Wednesdays and the most expensive ones on Thursdays.

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 October, where tickets cost C$ 120 (return) on average. On the other hand, the most expensive months are August and December, where the average cost of round-trip tickets is C$ 755 and C$ 724 respectively.

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

The average round-trip price for all non-stop flights, flights with one layover, and flights with two layovers for the route found by users searching on KAYAK in the last 2 weeks.

No, with an average price for the route of C$ 765, prices are generally cheapest when you fly direct.

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 11% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 26 weeks before departure.

Expert advice

Expert advice for your flight from London to Ottawa

 
AI-powered summary based on content written by travel experts. AI can make mistakes.
KAYAK teamed up with top travel experts to share the best tips for your journey.
Our travel experts
Stefanie Waldek

Stefanie Waldek

Expert on Air Canada

Stefanie Waldek is a freelance space, travel, and design writer based in Saratoga Springs, NY. Her words have appeared in Space.com, Travel + Leisure, Condé Nast Traveler, Architectural Digest, and House Beautiful, among other publications. An expert in aviation and expedition cruising, Stefanie is frequently up in the air or on the sea, likely en route to Antarctica or the Arctic.

Jessica Macdonald

Jessica Macdonald

Expert on Lufthansa

Currently based in Scotland after living in South Africa and the United States, Jessica has been writing travel and aviation content for more than 10 years. She regularly contributes to Travel + Leisure and TripSavvy, and has had work published by Condé Nast Traveller and The Independent. She has traveled to more than 50 countries across six continents.

Mark Stachiew

Mark Stachiew

Expert on YOW

Mark Stachiew has been exploring the world and writing about it for more than 30 years. His travel stories have appeared in numerous newspapers, magazines and online publications in Canada, the United States and beyond.

Duncan Madden

Duncan Madden

Expert on LHR

Duncan is a freelance travel writer, copywriter and book author in constant search of travel stories and the perpetual sensation of being on holiday. He’s never happier than when on a dusty trail in search of empty waves or ducking under the piste tape in search of snowbound solitude. British born, living in Germany, but happiest heading for the horizon. His first book, Found in Translation, explores the etymologies and stories of country names around the world and is out now.

Good to know

Low seasonJanuary
Cheapest flightC$ 366
Best time to beat the crowds (5% less expensive on average)
Most popular time to fly (10% more expensive on average)
Flight from London Gatwick 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 round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips 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).

  • 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 C$ 366 for a one-way ticket and C$ 683 for a round-trip.

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

    When flying out of London you will be using one of these airports: London Gatwick, London Heathrow, or London Stansted. You will be landing at Ottawa.

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

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

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

    The Airbus A350-1000 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?

    There are direct flights from London to Ottawa on a daily basis.

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

    The two airlines most popular with KAYAK users for flights from London to Ottawa are Air Transat and Air Canada. With an average price for the route of C$ 935 and an overall rating of 7.8, Air Transat is the most popular choice. Air Canada is also a great choice for the route, with an average price of C$ 1,007 and an overall rating of 7.1.

  • 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 round-trip 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? 25% of our users found flights on this route for C$ 868 or less one-way and C$ 803 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.

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 nonstop 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 nonstop flights

Reviews of the top 3 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 552 reviews
7.9Boarding
7.1Entertainment
8.5Crew
6.8Food
7.3Comfort
Airline reviews

Arm rests are too small and too close. No screens, movie selection was very limited and poor. Food is pretty much overpriced cheap convenience store food.

6.0 GoodAnonymous, May 2026
POP - YUL
Read more Air Transat reviews

Arm rests are too small and too close. No screens, movie selection was very limited and poor. Food is pretty much overpriced cheap convenience store food.

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

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

Information on your arrival and departure airports