YOW - LON

£181 Find Cheap Flights from Ottawa to London

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 7/7. 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 London

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Ottawa to London, 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 Ottawa to London, as well as popular online travel agencies
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41,299,237 searches in the past 7 days on KAYAK

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Everything you should know

Cheapest return fare
£410
Typical prices: £635-£461
Air Transat
dom. 6/9dom. 13/9
YOW - LGW • Direct
Cheapest one-way flight
£181
Multiple Airlines
mar. 7/7
YOW - STN • 2 stops
Top airlines
Cheapest • from £409 (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 6h 48m
Direct flights
Direct flights
+1
+1
Direct flights
Direct flights
+1
Top routes
Cheapest • 17% average savings
Most popular
Insights
Insights
Insights
Insights
Avoid delays
Most punctual • 74% on-time
Best time • Fewest delays
Insights
Insights
Insights
Insights
Top stopover airports
Cheapest • Avg £503 (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 6 weeks in advance save around 11% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
Cheapest • 24% 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 London!
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

dom., 6 sep. - dom., 13 sep.
Air Transat Logo
19:40 - 07:55
YOW
-
LGW
7h 15mdirect
Air Transat Logo
09:40 - 12:40
LGW
-
YOW
8h 00mdirect
£410Air Transat
vie., 25 sep. - vie., 2 oct.
Air Transat Logo
19:40 - 07:55
YOW
-
LGW
7h 15mdirect
Air Transat Logo
09:40 - 12:40
LGW
-
YOW
8h 00mdirect
£412Air Transat
mar., 1 sep. - lun., 14 sep.
Multiple Airlines Logo
06:55 - 22:40
YOW
-
STN
34h 45m
2 stops
Multiple Airlines Logo
20:50 - 00:20
STN
-
YOW
32h 30m
3 stops
£432Multiple Airlines
mar., 21 jul. - mar., 28 jul.
Multiple Airlines Logo
06:55 - 13:15
YOW
-
STN
25h 20m
2 stops
Multiple Airlines Logo
21:55 - 17:35
STN
-
YOW
24h 40m
2 stops
£443Multiple Airlines
lun., 7 sep. - mié., 23 sep.
Air Canada Logo
18:55 - 06:30
YOW
-
LHR
6h 35mdirect
Air Canada Logo
14:10 - 17:05
LHR
-
YOW
7h 55mdirect
£447Air Canada
jue., 10 sep. - sáb., 19 sep.
Air Canada Logo
18:55 - 06:30
YOW
-
LHR
6h 35mdirect
Air Canada Logo
14:10 - 17:05
LHR
-
YOW
7h 55mdirect
£448Air Canada
jue., 10 sep. - sáb., 19 sep.
Lufthansa Logo
18:55 - 06:30
YOW
-
LHR
6h 35mdirect
Lufthansa Logo
14:10 - 17:05
LHR
-
YOW
7h 55mdirect
£449Lufthansa
mar., 13 oct. - mié., 21 oct.
Lufthansa Logo
14:35 - 06:30
YOW
-
LHR
10h 55m
1 stop
Lufthansa Logo
14:10 - 17:05
LHR
-
YOW
7h 55mdirect
£451Lufthansa
mié., 11 nov. - lun., 16 nov.
SWISS Logo
10:50 - 08:40
YOW
-
LCY
16h 50m
2 stops
SWISS Logo
09:15 - 22:32
LCY
-
YOW
18h 17m
2 stops
£624SWISS
mar., 13 oct. - mié., 21 oct.
SWISS Logo
14:00 - 12:35
YOW
-
LCY
17h 35m
2 stops
SWISS Logo
09:15 - 19:10
LCY
-
YOW
14h 55m
2 stops
£653SWISS
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.

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 £443 on the route between Ottawa (YOW) and London Gatwick Airport (LGW). Over the past month, this route was, on average, 17% 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, Friday 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 Saturday 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 £289 (return) on average. On the other hand, the most expensive months are August and April, where the average cost of round-trip tickets is £427 and £418 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.

No, with an average price for the route of £638, prices are generally cheapest when you fly direct.

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 6 weeks before departure, which saves you about 11% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 16 weeks before departure.

Good to know - Cheap tickets from Ottawa to London

Low seasonJanuary
Cheapest flight£181
Best time to beat the crowds (14% less expensive on average)
Most popular time to fly (6% more expensive on average)
Flight from Ottawa to London Stansted 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 3 days, the lowest price for a flight from Ottawa to London was £181 for a one-way ticket and £409 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 £533 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 £613 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.

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

  • Looking for a cheap flight from London to Ottawa? 25% of our users found flights on this route for £628 or less round-trip.

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 555 reviews
7.3Comfort
7.1Entertainment
6.8Food
7.9Boarding
8.5Crew
Airline reviews

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

6.0 GoodJanice, May 2026
YYZ - OPO
Read more Air Transat reviews

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

I didn't have any problems during my flight. My main issue is with airlines in general, they keep offering less and less every year, AirTransat is no different.

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.

We were treated well by the staff at the airport and on board aircraft. Delay was uncontrollable due to the weather. Had to wait for another gate as we were late landing in Fort Lauderdale.

I was supose to have a carrey on incluided for each passenger and they made me paid 75$ each at the gate.

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.

It was out first time flying Air Canada and it was ok, comfort-wise. I hope airlines are able to get a quiet room installed for young children flying. Screaming and crying the whole time in business class is quite unfortunate. That was the only thing that really messed up the experience.

Staff were very friendly. Plane left on time and arrived on time.

Air traffic delay meant boarding started, then plane was evacuated and passengers sent back to the terminal for 1 hour. Very little information shared.

The crew was amazing! I was a bit surprised and disappointed that there was not wifi available for personal use. The only thing I would change would be the seat cushions. They are not comfortable at all for long flights.

It was great to have a vegetarian meal option, but departure was delayed because they had oversold the flight. Air Canada, you’re in charge of how many tickets are sold: don’t oversell!

It was a very small plane and was ok. No food or entertainment so there should be an option for NA.

I liked the quiet airport and no queue. I don't like that when booking it is not clear that there is teared economy, that you have to pay extra for choosing a seat and for your luggage both ways. We didn't find this out until checking in. It turned out not very economical.

We were happy with the service and cost of checking a bag

Flying with Air Canada is still better than the discount airlines like Flair. The seats are more comfortable and the on-board entertainment is better, with each seat having a built in screen and lots of content to watch. Onboard WIFI is also great to have, as well as plugs for charging. I think passengers in general are getting better at not bringing too much luggage onboard, and Air Canada is better at managing this without customers feeling like they are being taken advantage of with extra fees. I have travelled on different airlines and all seem to be loading faster, with fewer people bringing both a carry on and a personal item. Now I just bring one item and it fits under the seat so I don't need to worry about finding a place in the overhead bins. Overall, across the industry, asking customers to pay for carry on baggage is fair because it allows customers to only pay for what they need, and it helps to keep the planes on time. Kudos to Air Canada for its approach - the desired result is achieved without customers feeling that they are being surprised and caught with unexpected extra fees.

Due to the strike by AC flight attendants, my flight was cancelled. Very disappointing! A refund is being processed. This was not a Kayak issue. I will be sure to come back to Kayak in the future.

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

Information on your arrival and departure airports