LON - YOW

$259 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 4/26. 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 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
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Everything you should know

Cheapest round-trip
$508
Typical prices: $835-$634
Air Transat
Fri 5/15Sun 5/24
LGW - YOW • Non-stop
Cheapest one-way
$259
Multiple Airlines
Sun 4/26
LGW - YOW • 3 stops
Nonstop flights
6 days a week
Mon, Wed, Thu, Fri, Sat, Sun
You can fly direct with Air Canada and Air Transat. Average duration is 7h 55m
Direct flights
Direct flights
+1
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Direct flights
Direct flights
+1
Top airlines
Cheapest • from $508 (round-trip)
Best reviews • 7.1 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Top layover airports
Cheapest • Avg $620 (round-trip)
Shortest trip • 11h 10m (one-way)
Insights
Insights
Insights
Insights
Top routes
Cheapest
Most popular
Insights
Insights
Insights
Insights
Avoid delays
Most punctual • 91% on-time
Best time • Fewest delays
Insights
Insights
Insights
Insights
When to book
in advance
Our data shows that travelers who book at least 5 weeks in advance save around 7% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
Cheapest • 14% 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 100s of sites at once to find you the best travel deals.
We hope you love your trip to Ottawa!
Flight Deals
Booking Insights
Flight Deals

Cheap Flights from London to Ottawa (LON-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, May 15 - Sun, May 24
Air Transat Logo
9:40 am - 12:40 pm
LGW
-
YOW
8h 00mnonstop
Air Transat Logo
7:40 pm - 7:55 am
YOW
-
LGW
7h 15mnonstop
$508Air Transat
Fri, May 15 - Fri, May 22
Air Transat Logo
9:40 am - 12:40 pm
LGW
-
YOW
8h 00mnonstop
Air Transat Logo
7:40 pm - 7:55 am
YOW
-
LGW
7h 15mnonstop
$510Air Transat
Fri, May 15 - Sun, May 24
Multiple Airlines Logo
6:40 pm - 5:11 pm
LHR
-
YOW
27h 31m
2 stops
Multiple Airlines Logo
7:30 pm - 9:35 am
YOW
-
LHR
9h 05m
1 stop
$547Multiple Airlines
Fri, May 15 - Fri, May 22
Multiple Airlines Logo
8:05 pm - 5:11 pm
LHR
-
YOW
26h 06m
2 stops
Multiple Airlines Logo
8:05 pm - 11:50 am
YOW
-
LHR
10h 45m
1 stop
$559Multiple Airlines
Fri, May 15 - Fri, May 22
Virgin Atlantic Logo
6:15 am - 3:00 pm
LHR
-
YOW
13h 45m
1 stop
Virgin Atlantic Logo
5:25 pm - 7:55 am
YOW
-
LHR
9h 30m
1 stop
$577Virgin Atlantic
Fri, May 15 - Sun, May 24
Virgin Atlantic Logo
6:15 am - 3:00 pm
LHR
-
YOW
13h 45m
1 stop
Virgin Atlantic Logo
5:25 pm - 7:55 am
YOW
-
LHR
9h 30m
1 stop
$579Virgin Atlantic
Thu, May 21 - Fri, Jun 5
Lufthansa Logo
9:30 am - 12:25 pm
LHR
-
YOW
7h 55mnonstop
Lufthansa Logo
2:35 pm - 6:30 am
YOW
-
LHR
10h 55m
1 stop
$596Lufthansa
Fri, May 22 - Fri, Jun 5
Lufthansa Logo
9:30 am - 1:56 pm
LHR
-
YOW
9h 26m
1 stop
Lufthansa Logo
2:35 pm - 6:30 am
YOW
-
LHR
10h 55m
1 stop
$599Lufthansa
Fri, May 15 - Fri, May 22
United Airlines Logo
8:40 am - 11:54 pm
LHR
-
YOW
20h 14m
2 stops
United Airlines Logo
10:25 am - 7:15 am
YOW
-
LHR
15h 50m
2 stops
$607United Airlines
Fri, May 15 - Sun, May 24
United Airlines Logo
8:40 am - 11:54 pm
LHR
-
YOW
20h 14m
2 stops
United Airlines Logo
10:25 am - 5:55 am
YOW
-
LHR
14h 30m
2 stops
$608United Airlines
Booking Insights

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.

How much is a round-trip flight from London to Ottawa?

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

What is the cheapest London to Ottawa flight route?

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

The cheapest return flight from London to Ottawa costs $675 on the route between London Gatwick Airport (LGW) and Ottawa (YOW). The most popular route is between London Heathrow Airport (LHR) and Ottawa (YOW).

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 Wednesday. On your return trip to London, you should consider flying back on a Saturday, and avoid Sundays 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 June, where tickets cost $632 (return) on average. On the other hand, the most expensive months are August and December, where the average cost of round-trip tickets is $906 and $892 respectively.

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

The average round-trip price for all non-stop flights, flights with one layover, and flights with two layovers for the route found by users searching on KAYAK in the last 2 weeks.

Yes, flying with a layover may cost you more time, but you can also save money on the route, with a 2 stops layover the cheapest option at $775 on average.

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 5 weeks before departure, which saves you about 7% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 13 weeks before departure.

Good to know

Low seasonJanuary
Best time to beat the crowds with an average 5% drop in price.
Most popular time to fly with an average 4% increase in price.

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

  • Can I take a direct flight between London airports and Ottawa Airport?

    Unfortunately you cannot fly directly between these two cities, but there are plenty of indirect routes you can take that only require one stop. You can fly, for example, with WestJet from London Gatwick Airport, which requires a transfer at Toronto Pearson International first. Alternatively, you could fly from Heathrow Airport with Air Canada, which also has a change in Toronto.

  • Can I fast track through security at London airports?

    If you are going to be in a rush at the airport, or should you be travelling at peak times, there is always the option to fast track through security. You need to book at least 24h in advance, and it will cost about £4 at Luton and around £5 at Stansted and Gatwick. For flights from Heathrow, it costs approximately £12.50 to fast track through security.

  • Can I change my currency at London airports?

    Once you have arrived at London airports for your flight, you can use currency exchange bureaus to change your money to Canadian Dollars. If you fly with Air Canada from Heathrow, you will most likely depart from Terminal 2, so you can access the Travelex bureaus and ATMs. From other airports with indirect flights, you can use an International Currency Exchange store or ATM. These are situated prominently in the terminals, so they will be easy to find.

  • How do I get to the city centre from Ottawa Airport?

    It’s easy to get from the airport to the centre as there are many methods of transport to choose from. You can get the Ottawa Airport Bus route 97 from the front of the building. This takes about 30min and costs approx. C$3.30 (£1.90). Alternatively, you could get a taxi from the taxi rank outside the front of the terminal building which takes about 15min and costs around C$29 (£16.75).

  • 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 $259 for a one-way ticket and $508 for a round-trip.

  • Do I need a passport to fly between London and Ottawa?

    Yes, you'll most likely have to show a valid passport before boarding the plane in London and on arrival in Ottawa.

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

    Only Lufthansa offers inflight Wi-Fi service on the London to Ottawa flight route.

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

    The Boeing 777-300ER is the aircraft model that flies most regularly on the London to Ottawa flight route.

  • Which airline alliances offer flights from London to Ottawa?

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

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

    You can catch a nonstop flight from London to Ottawa on on Monday, Wednesday, Thursday, and Saturday.

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

    The two airlines most popular with KAYAK users for flights from London to Ottawa are Air Canada and Lufthansa. With an average price for the route of $759 and an overall rating of 7.1, Air Canada is the most popular choice. Lufthansa is also a great choice for the route, with an average price of $795 and an overall rating of 6.8.

  • 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.

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

  • Looking for a cheap flight? 25% of our users found flights on this route for $739 or less round-trip.
  • There are two airports in London that serve the route to Ottawa International Airport (YOW) with one stop. With London Heathrow (LHR) being located so centrally, it makes it very convenient for those travelling on business. Whereas Gatwick is great for those coming from the south of London.
  • Save time on the day of your flight by staying in an airport hotel the night before. If you're flying with Air Canada from Heathrow, then you can opt for a hotel such as Aerotel, which is only a short walk from Terminal 2. At Gatwick you could stay at Hilton, which is also close to the terminal building.
  • From Ottawa Airport, it is easy to continue your journey to nearby cities, such as Cornwall in about 70min and Kingston in about 2h, which makes it a great airport if you are planning to continue your journey to other Canadian cities.
  • Before your flight to Ottawa Airport, you can relax in a peaceful lounge, such as the Aspire Lounges in Heathrow Airport, Gatwick Airport and Luton Airport (LTN), which provide complimentary snacks and Wi-Fi from about £25 per person. The Escape lounge in Stansted (STN) offers similar benefits for about £20. However, there are no lounges at London city Airport.
  • You can call up 48h in advance of your flight to get mobility assistance at London Airports. They will either greet you on arrival or you can locate the assistance reception desks in the check-in zones of the departures hall.

Prefer to fly direct from London to Ottawa?

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

Direct departures

London to Ottawa

Monday

Air Canada

Air Canada

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

Ottawa to London

Monday

Air Canada

Air Canada

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 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.
7.1
Air CanadaOverall score based on 10853 reviews
6.3Food
7.1Comfort
7.8Crew
6.8Entertainment
7.3Boarding
Airline reviews

Delayed by 5+ hours and they give a voucher for only $20 CAD which isn’t even redeemable at any place with edible food. Then took almost an hour to clean craft after it landed. And nonsensical boarding delayed even further. We didn’t leave until 1:30am….

2.0 MediocreAnonymous, Mar 2026
YYZ - YOW
Read more Air Canada reviews

Delayed by 5+ hours and they give a voucher for only $20 CAD which isn’t even redeemable at any place with edible food. Then took almost an hour to clean craft after it landed. And nonsensical boarding delayed even further. We didn’t leave until 1:30am….

Was disappointed when landing in Canada was made to wait for over 1 hour with several other parents and babies for our strollers . The expectation was that the gate checked strollers would be there when exiting aircraft. This was not the case we were told to walk to a point and wait for them . After being left there and not being updated we were met with very hostile and rude air canada staff . There where no apologies or understanding even though all the children where very uncomfortable and the parents very frustrated as you can imagine . Instead the air canada staff at the airport where very rude and made an already frustrating situation much worse instead of trying to assure the parents that that were making effort to fix the situation. One gentleman in particular was very rude to some parents telling them to move when they were simply seeking information. He made the other parents including myself feel very uncomfortable. He also told a gentleman he was capturing images of everyones boarding pass when this was untrue as he was only taking a photo of the gentleman pass which was strange.

I travelled in Business class for the first time and wish I could do that again.

It was good, seating was a little tight apart from that all was well.

I liked the flight but the check in was horrendous. I have booked with you before but not ever had to pay extra for luggage, it was not clear on booking, I didn't know there was different categories of economy that meant different allowances. So was alarmed when we had to pay a further £120 at the check-in at a point of not changing.

I wish they gave the earphones earlier rather than when we are already in flight.

Very nice staff members are very nice and friendly helpful

We were a little late pushing back ,but arrived a head of time.

The 787 Dreamliner that we flew on was relatively new and a nice aircraft. We flew on a 777 which was noticeably older and the seats were average” but the 787 was very nice, especially for the price. No window blinds anymore, instead high tech adjustable polychromatic glass!! Nice.

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.

The flight was delayed 7 hours and we were given 10 euros vouchers. This is ridiculous. The crew was not nice at all, they just did their job with serving food and drinks. Did not even apologize for the delay!!!!

Flight map did not work. Crew was great, food was good, plane took off on time and landed early. That's all I can ask.

Paid for exit row at the back of the plane. Window seat with lots of leg space. Food was inedible (as usual). Brought my own.

Missed flight. Requested assistance for my father and he did not receive it in Paris.

Business Class was very comfortable and the food and service was top notch.

The crew was very nice. The equipment on the 747 felt old.

As expected. Would have appreciated a 3-day headsup reminder as a reassurance that all is well.

Poor food on flight between Toronto and Stockholm Airport Toronto too crowded

The plane was late (as was my flight out from Birmingham the day before)

Business Class Configuration was excellent- private and comfortable. Crew and service were excellent. I really appreciate Air Canada cabin pressurization equal to an altitude of 8,000ft. Upon landing, I felt more alert and refreshed than typical for international flights

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

Information on your arrival and departure airports