YOW - YXU

C$ 242 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 9/7. 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

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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Flights Deals

Cheap Flights from Ottawa to London (YOW-YXU)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip 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 round-trip flight deals from Ottawa to London

Tue, 9 Sep - Wed, 10 Sep
Air Canada Logo
11:55 a.m. - 2:57 p.m.YOW-YXU
3h 02m1 stop
Air Canada Logo
6:15 a.m. - 9:04 a.m.YXU-YOW
2h 49m1 stop
C$ 595Air Canada
Find Deal
Fri, 12 Sep - Sat, 13 Sep
Air Canada Logo
11:55 a.m. - 2:57 p.m.YOW-YXU
3h 02m1 stop
Air Canada Logo
6:15 a.m. - 11:04 a.m.YXU-YOW
4h 49m1 stop
C$ 596Air Canada
Find Deal
Fri, 22 Aug - Thu, 28 Aug
WestJet Logo
7:15 p.m. - 5:14 a.m.YOW-YXU
9h 59m1 stop
WestJet Logo
6:00 a.m. - 2:56 p.m.YXU-YOW
8h 56m1 stop
C$ 600WestJet
Find Deal
Fri, 22 Aug - Thu, 28 Aug
WestJet Logo
7:15 p.m. - 5:14 a.m.YOW-YXU
9h 59m1 stop
WestJet Logo
8:00 p.m. - 6:45 a.m.YXU-YOW
10h 45m1 stop
C$ 602WestJet
Find Deal
Thu, 3 Jul - Sat, 5 Jul
Air Canada Logo
11:55 a.m. - 5:07 p.m.YOW-YXU
5h 12m1 stop
Air Canada Logo
9:55 a.m. - 3:05 p.m.YXU-YOW
5h 10m1 stop
C$ 629Air Canada
Find Deal
Mon, 30 Jun - Wed, 2 Jul
Air Canada Logo
5:55 p.m. - 9:27 p.m.YOW-YXU
3h 32m1 stop
Air Canada Logo
6:15 a.m. - 11:05 a.m.YXU-YOW
4h 50m1 stop
C$ 659Air Canada
Find Deal
Tue, 8 Jul - Tue, 15 Jul
Air Canada Logo
3:55 p.m. - 9:27 p.m.YOW-YXU
5h 32m1 stop
Air Canada Logo
6:15 a.m. - 11:05 a.m.YXU-YOW
4h 50m1 stop
C$ 674Air Canada
Find Deal
Fri, 27 Jun - Mon, 30 Jun
Air Canada Logo
10:00 a.m. - 2:57 p.m.YOW-YXU
4h 57m1 stop
Air Canada Logo
9:55 a.m. - 1:10 p.m.YXU-YOW
3h 15m1 stop
C$ 688Air Canada
Find Deal
Wed, 9 Jul - Wed, 16 Jul
WestJet Logo
7:15 p.m. - 5:14 a.m.YOW-YXU
9h 59m1 stop
WestJet Logo
6:00 a.m. - 5:25 a.m.YXU-YOW
23h 25m2 stops
C$ 729WestJet
Find Deal
Fri, 25 Jul - Fri, 1 Aug
 Logo
6:10 a.m. - 9:00 p.m.YOW-YXU
14h 50m3 stops
 Logo
9:45 p.m. - 2:44 p.m.YXU-YOW
16h 59m1 stop
C$ 826
Find Deal
Useful Info

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.

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.

Your flight ticket price will generally be cheaper if you fly to London on a Thursday and more expensive on a Tuesday. On your return trip to Ottawa, you should consider flying back on a Thursday, and avoid Sundays for better deals.

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 May, where tickets cost C$ 757 (return) on average. On the other hand, the most expensive months are June and August, where the average cost of round-trip tickets is C$ 1,195 and C$ 1,076 respectively.


Good to know

Low seasonSeptember
High seasonJune
Cheapest flightC$ 242
Best time to beat the crowds but there is an average 13% increase in price.
Most popular time to fly (27% more expensive on average)
Flight from Ottawa to London

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 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 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 C$ 177 for a one-way ticket and C$ 435 for a round-trip.

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

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from Ottawa to London?

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

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

    The two airlines most popular with KAYAK users for flights from Ottawa to London are WestJet and Air Canada. With an average price for the route of C$ 566 and an overall rating of 7.2, WestJet is the most popular choice. Air Canada is also a great choice for the route, with an average price of C$ 950 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 round-trip 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.

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.
7.2
WestJetOverall score based on 2868 reviews
6.1Entertainment
7.9Crew
7.1Comfort
7.4Boarding
6.2Food
Airline reviews

Not the greatest experience everything was pretty mediocre. My seat was by the washroom in the aisle and was not located well as everyone past each other people were right in my seat and space.

2.0 MediocreAnonymous, Jun 2025YYZ - YVR
Read more WestJet reviews

Not the greatest experience everything was pretty mediocre. My seat was by the washroom in the aisle and was not located well as everyone past each other people were right in my seat and space.

The small prop plane was crowded and the overhead luggage storage is a smaller than on the jets. Other than that, the crew was good, the flight was on time and the landing was smooth.

It was good, flight was on time, boarding was smooth and done in zones, food was good too but there was no form of entertainment. Luggage’s were intact. So an overall good flight

We never had an experience they canceled the flight and they did not offer us an alternative flight. I had to book one on my own expense. They offered us food voucher and we could not use them at the airport it kept saying not attached to an existing flight. The people at the counter were rude and cold and they did not care about our situation

Flight was delayed 3 times. Then cancelled due to pilot being timed out. They refused hotel vouchers. Gate attendants were very rude and could not help you at all.

No access to any entertainment No food other than a cookie or pretzels even tho flight was over the supper hour Seats very close together and very little leg room Staff was very good

Flight cancelled and Kayak switched our return flight to a red eye. Ridiculous.

The cancelation of my flight from Toronto to Edmonton without any solution given to me for my next flight. Very poor connection from Toronto to Edmonton

Too squished in seats. I'm 110 lbs and 5'6....can't imagine being any bigger and flying

Original flight canceled and communicated poorly. A series of gate changes , delays and plane changes followed. Even after the entire flight boarded there was another plane changes followed. Food vouchers provided to my travel companion but not to me despite being on the same reservation. No in flight entertainment. The entire experience was terrible although the flight crew were great.

Just a little improvement on food but everything is excellent

This was actually a bus ride to the KW airport. It was smooth and comfortable and on time.

They lost my checked in luggage, why do I pay for my cargo not arriving at the same destination as me?

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.

Poor planning meant the plane was delayed an hour, then a thunder storm started and the ground staff couldn't work. Eventual arrival in Santiago was 3 hours late resulting in missed connections and the need to buy new tickets.

thee is no screen on these flights, smaller storage cabins scuffed my carry on, it was ok overall

The take off was delayed as we were told that the baggages had to be rearranged to balance the weight. I only took a carry-on and a personal item, but the overhead bin was extremely small, even a normal size carryon can’t fit it, so they had to check it in for free. The seat was really tight and no entertainment at all.

The pork noodles were disgusting. The tuna sandwich had hardly any tuna and the bread was stale. A salad would have been better. An apple or a muffin.

Air Canada is the worst but the only option for my route

5-hour trip with just water and one cookie is not great: fruits and cheese,, salads, protein smoothie... It could be small but nourrishing No screen and no outlet to connect our electronic devices. If there were ,It would have been nice to be informed. Every instruction given in french by the agent on the plane was pronounced so quickly that despite french is my 1st language, I could not understand the instructions. Too fast, no intonation, no space between words. Most of the time, the english versions (my 2nd language) were fast but with breathing between words, good intonation and the information was much easier to understand.

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

Information on your arrival and departure airports

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