YOW - YXU

C$ 364 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 15/5. 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

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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Cheap Flight Deals 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.

Recent round-trip flight deals from Ottawa to London

KAYAK's recommended round-trip deals from the most popular airlines that fly from Ottawa to London.
Discover the best prices for you by selecting your travel dates on KAYAK.
Choose your dates
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$ 519WestJet
Find Deal
Wed, 28 May - Sun, 8 Jun
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$ 550WestJet
Find Deal
Tue, 27 May - Wed, 4 Jun
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$ 576WestJet
Find Deal
Wed, 28 May - Sun, 1 Jun
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$ 607WestJet
Find Deal
Sun, 25 May - Wed, 28 May
WestJet Logo
7:50 a.m. - 5:14 a.m.YOW-YXU
21h 24m1 stop
WestJet Logo
6:00 a.m. - 6:21 p.m.YXU-YOW
12h 21m1 stop
C$ 760WestJet
Find Deal
Sun, 8 Jun - Sun, 15 Jun
WestJet Logo
7:50 a.m. - 5:14 a.m.YOW-YXU
21h 24m1 stop
WestJet Logo
6:00 a.m. - 5:25 a.m.YXU-YOW
23h 25m2 stops
C$ 782WestJet
Find Deal
Sun, 8 Jun - Sun, 15 Jun
 Logo
5:15 p.m. - 5:14 a.m.YOW-YXU
35h 59m3 stops
 Logo
6:00 a.m. - 5:25 a.m.YXU-YOW
23h 25m2 stops
C$ 832
Find Deal
Sun, 8 Jun - Sun, 15 Jun
Air Canada Logo
6:00 a.m. - 3:03 p.m.YOW-YXU
9h 03m2 stops
Air Canada Logo
9:55 a.m. - 3:04 p.m.YXU-YOW
5h 09m1 stop
C$ 1,018Air Canada
Find Deal
Tue, 27 May - Wed, 4 Jun
Air Canada Logo
9:05 a.m. - 3:03 p.m.YOW-YXU
5h 58m2 stops
Air Canada Logo
6:15 a.m. - 1:50 p.m.YXU-YOW
7h 35m2 stops
C$ 1,041Air Canada
Find Deal
Tue, 27 May - Wed, 4 Jun
Air Canada Logo
9:05 a.m. - 5:07 p.m.YOW-YXU
8h 02m2 stops
Air Canada Logo
6:15 a.m. - 11:05 a.m.YXU-YOW
4h 50m1 stop
C$ 1,216Air Canada
Find Deal
Fri, 22 Aug - Thu, 28 Aug

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$ 767 (return) on average. On the other hand, the most expensive months are August and November, where the average cost of round-trip tickets is C$ 1,076 and C$ 1,070 respectively.

Good to know

Low season

September

High season

May

Cheapest flight

C$ 364
Best time to beat the crowds (0% less expensive on average)
Most popular time to fly and prices are also 17% lower 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$ 263 for a one-way ticket and C$ 375 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$ 570 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$ 942 and an overall rating of 7.0.

  • 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.

See more FAQs

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 2816 reviews
7.0Comfort
7.4Boarding
7.9Crew
6.2Food
6.1Entertainment
Airline reviews

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

2.0 MediocreDoha, Apr 2025YYZ - YVR
Read more WestJet reviews

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.

Flight was on time. Online check in capabilities made things quick and easy. Zone boarding was enforced, which I appreciate. Everyone was not lining up ahead of their zone being called. Crew was professional and friendly.

Dogs. Dogs. Dogs ! Who the hell thought letting dogs on board was a good idea ? Yapping dogs on both flights ! They ruin the experience for everyone else around because you try to accommodate everyone. Please send me a refund.

We booked Premiere (their version of first class) and Premium Economy seats. We boarded an old swoop flight with all coach seating. No benefit to paying higher fare and no apology or reimbursement.

Lynda was rude and unhelpful. We asked for tea wiht a slice of lemon. She served us Coffee instead. When we spoke to her she made it seem as if we were lying. I asked if she would like to taste it and see - her reply was I don’t need to be rude. After this incident we were treated with subpar service for all beverages and food items after. We’re were purposely left out when they did garbage collection.

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.

The Flight Attendant was particularly helpful to my wife, who was having a bad day.

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

Information on your arrival and departure airports

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