YOW - LON

£188 Find Cheap Flights from Ottawa to London – Compare and Save

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Ottawa to London departing on 21/9. 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

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Everything you should know

Cheapest return fare
£343
Typical prices: £373-£534
Air Transat
Sun 13/9Sun 20/9
YOW - LGW • Direct
Cheapest direct flights
£354
Air Transat
Sun 13/9Tue 22/9
YOW - LGW • Direct
Top airlines
Cheapest • from £342 (return)
Best reviews • 7.8 score
Airline reviews
Airline reviews
+1
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Airline reviews
Airline reviews
+1
Direct flights
Every day
You can fly direct with Air Canada and Air Transat. Average duration is 6h 48m
Direct flights
Direct flights
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+1
Direct flights
Direct flights
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Top routes
Cheapest • 32% average savings
Most popular
Insights
Insights
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Insights
Avoid delays
Most punctual • 73% on-time
Best time • Fewest delays
Insights
Insights
Insights
Insights
Top stopover airports
Cheapest • Avg £491 (return)
Shortest trip • 9h 40m (one-way)
Insights
Insights
Insights
Insights
When to book
in advance
Our data shows that travellers who book at least 2 weeks in advance save around 14% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
Cheapest • 13% price drop
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
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Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Ottawa to London (YOW-LON)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for return flights from Ottawa to London 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 Ottawa to London

Sun, 13 Sep - Sun, 20 Sep
Air Transat Logo
19:40 - 07:55
YOW
-
LGW
7h 15mdirect
Air Transat Logo
11:35 - 17:35
LGW
-
YOW
11h 00m
1 stop
£343Air Transat
Sun, 13 Sep - Sun, 20 Sep
Air Transat Logo
19:40 - 07:55
YOW
-
LGW
7h 15mdirect
Air Transat Logo
11:35 - 17:35
LGW
-
YOW
11h 00m
1 stop
£346Air Transat
Sun, 13 Sep - Sun, 20 Sep
Air Transat Logo
19:40 - 07:55
YOW
-
LGW
7h 15mdirect
Air Transat Logo
11:35 - 17:35
LGW
-
YOW
11h 00m
1 stop
£353Air Transat
Sun, 13 Sep - Tue, 22 Sep
Air Transat Logo
19:40 - 07:55
YOW
-
LGW
7h 15mdirect
Air Transat Logo
09:40 - 12:40
LGW
-
YOW
8h 00mdirect
£354Air Transat
Sun, 13 Sep - Sun, 20 Sep
Air Transat Logo
19:40 - 07:55
YOW
-
LGW
7h 15mdirect
Air Transat Logo
09:40 - 12:40
LGW
-
YOW
8h 00mdirect
£357Air Transat
Tue, 15 Sep - Fri, 25 Sep
Air Transat Logo
19:40 - 07:55
YOW
-
LGW
7h 15mdirect
Air Transat Logo
09:40 - 12:40
LGW
-
YOW
8h 00mdirect
£357Air Transat
Sun, 13 Sep - Sun, 20 Sep
Air Transat Logo
19:40 - 07:55
YOW
-
LGW
7h 15mdirect
Air Transat Logo
09:40 - 12:40
LGW
-
YOW
8h 00mdirect
£360Air Transat
Sun, 13 Sep - Sun, 20 Sep
Air Transat Logo
19:40 - 07:55
YOW
-
LGW
7h 15mdirect
Air Transat Logo
11:35 - 17:35
LGW
-
YOW
11h 00m
1 stop
£360Air Transat
Sun, 13 Sep - Tue, 22 Sep
Air Canada Logo
17:30 - 21:00
YOW
-
LHR
22h 30m
1 stop
Air Canada Logo
12:40 - 14:45
LHR
-
YOW
31h 05m
1 stop
£452Air Canada
Sun, 13 Sep - Sun, 20 Sep
Air Canada Logo
17:30 - 21:00
YOW
-
LHR
22h 30m
1 stop
Air Canada Logo
09:30 - 22:10
LHR
-
YOW
17h 40m
1 stop
£452Air Canada
Booking Insights

KAYAK’s insights & trends for Ottawa to London flights

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

How much is a return flight from Ottawa to London?

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

Flight prices are below average for this route right now.

Flights to London from Ottawa usually cost between £526 and £655 in September.
The lowest price found in the past 5 days was £342 on Air Transat (13 Sept–20 Sept).

What is the cheapest Ottawa to London flight route?

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

The cheapest return flight from Ottawa to London costs £336 on the route between Ottawa (YOW) and London Gatwick Airport (LGW). Over the past month, this route was, on average, 32% cheaper than other Ottawa-London routes. It is also the most popular route.

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

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

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

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Ottawa to London, 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 Ottawa to London is February, where tickets cost £489 (return) on average. On the other hand, the most expensive months are December and July, where the average cost of round-trip tickets is £674 and £648 respectively.

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

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 £473 on average.

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

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Ottawa to London, 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 Ottawa to London, you should book around 2 weeks before departure, which saves you about 14% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 7 weeks before departure.

Good to know - Cheap tickets from Ottawa to London

Low season

January

Cheapest flight

£188
Best time to beat the crowds (12% less expensive on average)
Most popular time to fly (6% more expensive on average)
Flight from Ottawa to London Gatwick Airport

When to book flights from Ottawa to London

Are your dates flexible? Find out the best times to travel from Ottawa to London 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 Ottawa to London

  • What is the cheapest flight from Ottawa to London?

    In the last 5 days, the lowest price for a flight from Ottawa to London was £188 for a one-way ticket and £342 for a return.

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

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

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

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

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

    The Airbus A321neo is the aircraft model that flies most regularly on the Ottawa to London flight route.

  • Which airline alliances offer flights from Ottawa to London?

    Star Alliance is the only airline alliance operating flights between Ottawa and London.

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

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

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

    The two airlines most popular with KAYAK users for flights from Ottawa to London are Air Transat and Air Canada. With an average price for the route of £511 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 £639 and an overall rating of 7.1.

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

    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 Ottawa to London.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to London from Ottawa 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 Ottawa to London?

    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 London with an airline and back to Ottawa with another airline.

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

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

Prefer to fly direct from Ottawa to London?

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

Direct departures

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

Direct returns

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

Reviews of the top airlines flying from Ottawa to London

 
See real verified KAYAK customer reviews for airlines flying from Ottawa to London. 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 Ottawa to London? 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 569 reviews
8.5Crew
7.1Entertainment
6.8Food
7.3Comfort
8.0Boarding
Airline reviews

The flight was terrible based off the temperature in the plane and the air smelled so stale and gross. I have never wanted to hosed lore in my life after I got off. The food was disgusting and seemingly low quality. The staff was friendly. The bathrooms were so gross after a couple of hours. I will definitely never book with them again.

2.0 MediocreMirjam, Jul 2026
YYZ - AMS
Read more Air Transat reviews

The flight was terrible based off the temperature in the plane and the air smelled so stale and gross. I have never wanted to hosed lore in my life after I got off. The food was disgusting and seemingly low quality. The staff was friendly. The bathrooms were so gross after a couple of hours. I will definitely never book with them again.

The crew was great. There was no entertainment and the internet wasn't working. We sat in the run way for a LONG time which is always so upsetting. The seats are very close together and the flights are completely full which makes for a tough flight. Flying is just an uncomfortable experience.

Very kind crew. Vegetarian food better than usual. Prompt take off. Entertainment worked well. Could always do with more room!

The dinner was bland and boring, but the economy seats were surprisingly comfortable. The flight was very packed.

Great crew and entertaining Captain. Seats were not what we had expected based on my booking but things worked out in the end. Of course, like all airlines these days not enough leg or elbow room.

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.

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.

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

They are a sister company with Air Transat and the two companies do not work well together. If you have any issues the two companies will blame each other and you will miss your flights. The help line does not help

Flight delayed any hour and couple of big gate changes

In flight entertainment system did not work across the whole plane for entire flight. Seats were very cramped. Cabin temperature was freezing cold. Crew was miserable and answered everyone in a short and barking manner. I’ve flown air Canada many many times and never had an issue. But this was unpleasant.

They screwed up so bad, I asked for a short check for my luggage since we had a 21 hour overnight layover in London at a hotel. They said I have to receive my luggage in London because it’s an overnight layover. Get to London, nope, my bags aren’t coming off they are staying in terminal 5 over night and going straight to Ibiza. So we had no luggage for a whole day and basically stuck with no clothes or washroom stuff. Finally get to Ibiza and my luggage is completely smashed and damaged and missing a wheel. Now I have to drag this 50 lbs luggage around Ibiza islands for 10 days. Wtf. So pissed off Air Canada is LITERALLY THE WORST AIRLINE IN THE WORLD

After nearly nine years without traveling, my son and I decided to take our first flight, and we chose Air Canada and I’m so glad we did! From start to finish, our experience was nothing short of amazing. The flight itself was smooth, comfortable, and truly enjoyable. The staff were warm, professional, and went above and beyond to make us feel at ease. But what really stood out for me was the luggage tracking feature. Knowing that my bag was scanned onto the same flight I was on gave me such peace of mind. It’s little details like this that make all the difference, especially after not traveling for so long. This trip was incredibly special for us, and Air Canada made it even more memorable. Thank you for such a fantastic experience I wouldn’t hesitate to fly with you again!

Overall the new aircraft’s is good and crew is good. Just overall airline policies and process needs to be better.

The seats were very uncomfortable. The food was terrible. They only came around with the drink cart for dinner and breakfast. What if we needed water or something? I had to take my pills in the morning with a pop I bought from the airport. Absolutely ridiculous! Will never be flying Air Canada again after this trip!

Flight canceled last minute. Chaos. People got told different stories. They would not rebook me at the counter, then we had to walk to the other end of the concourse to use the phones. Meanwhile, a family 10min later was able to rebook at the counter while at the same time, customer service told me there were no flights left. Took over 2 hours to get a rebooking on Scandinavian air the next day. Ended up getting charged $300 for 4 checked bags by air Canada and then getting charged for checked bags the next day. Worst of all. At 11pm,the night of the canceled flight, all but 2 customer service agents at the check I'm counters left, leaving more than 50 people still in line trying to figure out what to do.

It was late leaving but made up time in the air.

The first leg of my flight from Toronto to London Heathrow was horrible. The seats in Economy are so tightly jammed together that any average height person is so uncomfortable. Going to the bathroom as well from the window seat was also a challenge as you need to disturb so many people to move out! The second leg to Vienna was delayed over 2 hours due to weather in Vienna but the LHR airport is so large that they don’t post the gate until 40 mins before the flight. So I had to run to the opposite end of the airport (zone B) to the furthest zone A gate. Took over 15 mins!!

I can’t believe air Canada can get away with the space they give economy flyers. The seat was uncomfortable and hard. There was barely enough leg room. I had leg cramps most of the flight because I couldn’t stretch my legs at all… horrible on a transatlantic flight. The flight attendants were very nice but one guy I watched serve other people he was so rude and snarky I thought gosh you’re nothing but a pest when you ask them for anything. Main thing is the flight was smooth and we arrived safely.

Zone 1 doesn’t board first, 40 others boarded prior to Zone 1, also entertainment system stuck on Mandarin unable to access English

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

Information on your arrival and departure airports