YXU - YOW

C$ 379 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 27/7. 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 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
Travellers love KAYAK
41,299,237 searches in the past 7 days on KAYAK

Save 25% or moreCompare multiple travel sites with one search.

Track pricesNot ready to book? Create a price alert for when prices drop.

Free to useThere are no hidden charges or fees.

Filter your dealsChoose cabin class, free Wi-Fi and more.

Flights Deals
Useful Info
Flights Deals

Cheap Flights from London to Ottawa (YXU-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, 12 Sep - Fri, 12 Sep
WestJet Logo
6:00 a.m. - 2:46 p.m.YXU-YOW
8h 46m1 stop
WestJet Logo
7:15 p.m. - 5:12 a.m.YOW-YXU
9h 57m1 stop
C$ 531WestJet
Find Deal
Fri, 3 Oct - Sat, 4 Oct
Air Canada Logo
9:55 a.m. - 3:04 p.m.YXU-YOW
5h 09m1 stop
Air Canada Logo
5:55 p.m. - 9:27 p.m.YOW-YXU
3h 32m1 stop
C$ 633Air Canada
Find Deal
Sun, 10 Aug - Fri, 15 Aug
WestJet Logo
8:00 p.m. - 6:45 a.m.YXU-YOW
10h 45m1 stop
WestJet Logo
7:15 p.m. - 5:14 a.m.YOW-YXU
9h 59m1 stop
C$ 695WestJet
Find Deal
Tue, 22 Jul - Tue, 29 Jul
WestJet Logo
8:00 p.m. - 6:45 a.m.YXU-YOW
10h 45m1 stop
WestJet Logo
6:00 a.m. - 5:14 a.m.YOW-YXU
23h 14m1 stop
C$ 732WestJet
Find Deal
Sun, 10 Aug - Fri, 15 Aug
WestJet Logo
8:00 p.m. - 6:45 a.m.YXU-YOW
10h 45m1 stop
WestJet Logo
6:10 a.m. - 5:14 a.m.YOW-YXU
23h 04m2 stops
C$ 741WestJet
Find Deal
Sun, 27 Jul - Sun, 3 Aug
Air Canada Logo
3:40 p.m. - 7:05 p.m.YXU-YOW
3h 25m1 stop
Air Canada Logo
10:00 a.m. - 3:02 p.m.YOW-YXU
5h 02m1 stop
C$ 782Air Canada
Find Deal
Sat, 26 Jul - Sat, 2 Aug
Air Canada Logo
9:55 a.m. - 1:10 p.m.YXU-YOW
3h 15m1 stop
Air Canada Logo
1:55 p.m. - 5:07 p.m.YOW-YXU
3h 12m1 stop
C$ 784Air Canada
Find Deal
Thu, 14 Aug - Thu, 21 Aug
WestJet Logo
6:00 a.m. - 6:21 p.m.YXU-YOW
12h 21m1 stop
WestJet Logo
5:15 p.m. - 5:14 a.m.YOW-YXU
11h 59m2 stops
C$ 796WestJet
Find Deal
Thu, 14 Aug - Thu, 21 Aug
WestJet Logo
6:00 a.m. - 6:21 p.m.YXU-YOW
12h 21m1 stop
WestJet Logo
3:45 p.m. - 5:14 a.m.YOW-YXU
13h 29m1 stop
C$ 802WestJet
Find Deal
Thu, 14 Aug - Thu, 21 Aug
 Logo
6:00 a.m. - 6:21 p.m.YXU-YOW
12h 21m1 stop
 Logo
12:35 p.m. - 5:14 a.m.YOW-YXU
16h 39m3 stops
C$ 839
Find Deal
Useful Info

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.

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.

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

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 March, where tickets cost C$ 802 (return) on average. On the other hand, the most expensive months are April and December, where the average cost of round-trip tickets is C$ 1,200 and C$ 1,092 respectively.

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 4 weeks before departure. For the absolute cheapest price, our data suggests you should book 24 weeks before departure.


Good to know

Low seasonApril
High seasonOctober
Cheapest flightC$ 379
Best time to beat the crowds but there is an average 24% increase in price.
Most popular time to fly and prices are also 16% lower on average.
Flight from London 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

  • 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$ 277 for a one-way ticket and C$ 388 for a round-trip.

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

    London airport is called London and the only airport in Ottawa is Ottawa.

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

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

  • Which airline alliances offer flights from London to Ottawa?

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

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

    The two airlines most popular with KAYAK users for flights from London to Ottawa are WestJet and Air Canada. With an average price for the route of C$ 553 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$ 977 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.

Reviews of the top 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.
7.2
WestJetOverall score based on 2908 reviews
6.2Food
6.1Entertainment
7.4Boarding
7.9Crew
7.0Comfort
Airline reviews

Generally good. However. The flight left 30 mins behind schedule with no reason given.

8.0 Excellentsamuel, Jun 2025YYZ - YYC
Read more WestJet reviews

Generally good. However. The flight left 30 mins behind schedule with no reason given.

Flight delayed, missed my pick-up had to Uber, plus missed dinner and medication, so sad!

The flight attendants were super! They created a cosy and warm flight atmosphere!

West Jet flight was cancelled and I was not notified. I found out when I tried to check in on-line. Spent 4 hours on the phone with West Jet and Just Fly trying to figure what happened.

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

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

the seats aren't the most comfy -- too little padding and I could feel whatever the passenger behind me was doing. Otherwise, it's all good.

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

This flight didn't happen for me because of overbooking.

Everything was simple and easy. The lady at the gate was super friendly, I wish I had her name to share. She's a little older, dark-haired. You can tell she likes her job and would be a great influence on any young people training with her.

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

Service is pretty good. Sandwiches have to be purchased but I’ve bought my own food. Seat was comfortable and various movies to chose from.

One leg of the flight arrived late which necessitated a rebooking on the next leg. Although there were no major weather events in play, best choice offered was a 7 hour wait in the Vancouver airport for a 4 hour totally packed red eye flight to Ottawa. No opportunities to return earlier via other major hubs like Toronto or Montreal. Felt very much like national routes were no longer well supported. Adding insult to injury, entertainment system for my seat was out of order. Thought I might use wi-fi, but discovered it would cost $10 per hour! Paid a lot for the flight as it was over the holiday period. Probably won't be doing that again.

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

Information on your arrival and departure airports

Not what you’re looking for? Find thousands of other hotels, flights, car rentals and package deals with KAYAK.