YOW - LHR

£191 Find Cheap Flights from Ottawa to London Heathrow Airport

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 Heathrow departing on 4/11. 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 Heathrow Airport

 
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 Heathrow (YOW-LHR)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for return flights from Ottawa to Heathrow 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 Heathrow

Fri, 31 Oct - Thu, 6 Nov
United Airlines Logo
06:20 - 05:55YOW-LHR
19h 35m1 stop
United Airlines Logo
09:00 - 23:54LHR-YOW
19h 54m2 stops
£484United Airlines
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Tue, 2 Sep - Tue, 4 Nov
United Airlines Logo
19:29 - 06:55YOW-LHR
30h 26m1 stop
United Airlines Logo
09:00 - 23:54LHR-YOW
19h 54m2 stops
£486United Airlines
Find Deal
Wed, 1 Oct - Thu, 9 Oct
Logo
21:00 - 08:35YOW-LHR
6h 35mdirect
Logo
06:50 - 13:51LHR-YOW
12h 01m2 stops
£521
Find Deal
Tue, 23 Sep - Wed, 15 Oct
Logo
05:55 - 10:30YOW-LHR
23h 35m1 stop
Logo
17:15 - 00:22LHR-YOW
12h 07m1 stop
£524
Find Deal
Wed, 1 Oct - Thu, 9 Oct
Air Canada Logo
14:40 - 06:30YOW-LHR
10h 50m1 stop
Air Canada Logo
09:30 - 22:04LHR-YOW
17h 34m1 stop
£529Air Canada
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Wed, 8 Oct - Wed, 15 Oct
Lufthansa Logo
21:00 - 08:35YOW-LHR
6h 35mdirect
Lufthansa Logo
12:40 - 15:00LHR-YOW
7h 20mdirect
£530Lufthansa
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Tue, 21 Oct - Sat, 25 Oct
Lufthansa Logo
18:40 - 09:35YOW-LHR
9h 55m1 stop
Lufthansa Logo
12:40 - 15:00LHR-YOW
7h 20mdirect
£531Lufthansa
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Mon, 6 Oct - Fri, 10 Oct
Air Canada Logo
15:55 - 09:35YOW-LHR
12h 40m2 stops
Air Canada Logo
09:30 - 17:07LHR-YOW
12h 37m2 stops
£537Air Canada
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Thu, 25 Sep - Thu, 2 Oct
Aer Lingus Logo
11:55 - 08:00YOW-LHR
15h 05m2 stops
Aer Lingus Logo
09:50 - 21:09LHR-YOW
16h 19m2 stops
£541Aer Lingus
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Thu, 25 Sep - Thu, 2 Oct
Aer Lingus Logo
08:35 - 08:00YOW-LHR
18h 25m2 stops
Aer Lingus Logo
09:50 - 21:09LHR-YOW
16h 19m2 stops
£543Aer Lingus
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Expert advice

Expert advice for your flight from Ottawa to Heathrow

 
Snippets provided in this section are AI-generated based on a summarisation of KAYAK-commissioned articles. The articles are presented as-is, for general informational purposes only, and may not be up-to-date. The opinions contained in the articles are original to the author and reflect their authentic experience, which may vary significantly from the experience of others.
KAYAK teamed up with top travel experts to share the best tips for your journey.
Airlines
Lufthansa

Lufthansa's Premium Economy offers 50% more space and an extra checked bag for long-haul comfort.


Enjoy three-course meals and complimentary drinks in Economy on long-haul Lufthansa flights.

Read more about Lufthansaby Jessica Macdonald
Air Canada

Air Canada's Signature Class features lie-flat seats and direct aisle access for ultimate comfort.


Air Canada offers free messaging for Aeroplan members on flights with Wi-Fi.

Read more about Air Canadaby Stefanie Waldek
Airports
YOW

Ottawa airport's security lines move quickly due to low flight volume. Check estimated wait times online to plan your arrival.

Read more about YOW
LHR

For a quick trip to central London, take the Heathrow Express from Paddington. It's fast but pricey; consider the Elizabeth Line for a cheaper option.

Read more about LHRby Duncan Madden
Our travel experts
Jessica Macdonald

Jessica Macdonald

Expert on Lufthansa

Jessica Macdonald

Jessica Macdonald

Currently based in Scotland after living in South Africa and the United States, Jessica has been writing travel and aviation content for more than 10 years. She regularly contributes to Travel + Leisure and TripSavvy, and has had work published by Condé Nast Traveller and The Independent. She has travelled to more than 50 countries across six continents.

Read more
Stefanie Waldek

Stefanie Waldek

Expert on Air Canada

Stefanie Waldek

Stefanie Waldek

Stefanie Waldek is a freelance space, travel, and design writer based in Saratoga Springs, NY. Her words have appeared in Space.com, Travel + Leisure, Condé Nast Traveler, Architectural Digest, and House Beautiful, among other publications. An expert in aviation and expedition cruising, Stefanie is frequently up in the air or out at sea, likely en route to Antarctica or the Arctic.

Read more
Duncan Madden

Duncan Madden

Expert on LHR

Duncan Madden

Duncan Madden

Duncan is a freelance travel writer, copywriter and book author in constant search of travel stories and the perpetual sensation of being on holiday. He’s never happier than when on a dusty trail in search of empty waves or ducking under the piste tape in search of snowbound solitude. British born, living in Germany, but happiest heading for the horizon. His first book, Found in Translation, explores the etymologies and stories of country names around the world and is out now.

Read more
Booking Insights

KAYAK's insights & trends for Ottawa to Heathrow flights

Get data-powered insights and trends into flights from Ottawa to Heathrow 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 Heathrow Airport?

The average price of all round-trip flights from Ottawa to London Heathrow Airport clicked on KAYAK for each day over the last 12 months.

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

What is the cheapest month to fly from Ottawa to London Heathrow Airport?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Ottawa to London Heathrow Airport, 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 Heathrow Airport is February, where tickets cost £529 (return) on average. On the other hand, the most expensive months are December and July, where the average cost of round-trip tickets is £774 and £648 respectively.

Can I save money by flying with a stopover from Ottawa to London Heathrow Airport?

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 £622, prices are generally cheapest when you fly direct.

How far in advance should I book a flight from Ottawa to London Heathrow Airport?

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 Heathrow Airport, 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 Heathrow Airport, you should book around 7 weeks before departure, which saves you about 16% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 12 weeks before departure.

Find deals

Good to know - Cheap tickets from Ottawa to London Heathrow Airport

Low seasonFebruary
Cheapest flight£191
Best time to beat the crowds (10% less expensive on average)
Most popular time to fly and prices are also 3% lower on average.
Flight from Ottawa to London Heathrow Airport

When to book flights from Ottawa to Heathrow

Are your dates flexible? Find out the best times to travel from Ottawa to Heathrow 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 Ottawa to London Heathrow Airport flights

  • Other than London, which other cities are served by London Heathrow International Airport (LHR)?

    LHR is the main and busiest airport in Greater London. It is an ideal destination for travelers travelling from Ottawa to London’s neighboring cities, such as Oxford and Cambridge. You will easily connect to Cambridge from LHR in 1h 56min via a subway train, while Oxford is a 59-minute ride away via National Express 757.

  • Are there pet relief areas at YOW?

    YOW is pet friendly. The airport has designated pet relief points on the landside and the airside. Before boarding your flight from YOW to LHR, you can take your household pet to the pet relief areas located past security near gate 18 and on landside near the Parkade’s south end in the passenger terminal’s Level 1,

  • What are the transport options from LHR to the city center?

    From LHR, you will connect to the city center via a taxi, bus, coach, or a Heathrow Express train. Heathrow Express trains offer the fastest transport from LHR to the Paddington train station within the city center. If you depart from Terminals 2 and 3, your Heathrow Express train ride to the city center will averagely last in 15 minutes, while Terminals 4 and 5 take about 25 minutes. The Express trains to Paddington train station depart LHR every 15 minutes.

  • How accessible is YOW to persons with various forms of disabilities?

    YOW is fully accessible to persons with various forms of disabilities. The airport’s terminals are fitted with braille signage for travelers with low vision. The elevators and the Parkade also feature voice announcements for the benefit of the visually impaired. The terminals further feature TTY phones and electronic signs that can benefit travelers with hearing impairments.

  • What is the cheapest flight from Ottawa to London Heathrow Airport?

    In the last 3 days, the lowest price for a flight from Ottawa to London Heathrow Airport was £253 for a one-way ticket and £641 for a return.

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

    Air Canada, and Lufthansa offer inflight Wi-Fi service on the Ottawa to London Heathrow Airport flight route.

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

    The Boeing 787-9 Dreamliner is the aircraft model that flies most regularly on the Ottawa to London Heathrow Airport flight route.

  • Which airline alliances offer flights from Ottawa to London Heathrow Airport?

    Star Alliance, and oneworld are the airline alliances operating flights between Ottawa and London Heathrow Airport, with Star Alliance being the most commonly used for this route.

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

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

  • How does KAYAK find such low prices on flights from Ottawa to London Heathrow Airport?

    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 Heathrow Airport.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Ottawa to London Heathrow Airport?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to London Heathrow Airport from Ottawa is likely to change within 7 days, so travellers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Ottawa to London Heathrow Airport?

    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 Heathrow Airport 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 Heathrow Airport?

    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 Heathrow Airport 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 Heathrow Airport

  • Looking for a cheap flight from London Heathrow Airport to Ottawa? 25% of our users found flights on this route for London Heathrow Airport or less round-trip.
  • If you intend to travel with the earliest morning flight from Ottawa to London Heathrow Airport (LHR) that departs Ottawa International Airport (YOW) a few minutes past midnight, consider spending your night in one of the hotels close to YOW. Among these hotels is the Hilton Garden Inn Ottawa Airport. The hotel is located about 1.5 km from YOW.
  • LHR is the operating hub for Lufthansa Airlines. Lufthansa is therefore ranked among the airlines with the highest number of flights from Ottawa to LHR. Your flight from YOW to LHR via a Lufthansa airline enables you to witness and enjoy Lufthansa’s exclusive amenity kitty, hot meals for long-haul flights, and high-performance AKG headphones.
  • Besides YOW, Ottawa is also home to other airports, such as the Gatineau-Ottawa Executive Airport and Rockcliffe Airport. YOW is, however, preferred by most travelers from Ottawa to LHR due to the available transport options to and from the city center. To connect from the city center, you can board line 97 buses that averagely take 30 minutes to reach YOW or a taxi that will take about 14 minutes to reach YOW in light traffic.
  • If you intend to self-drive to your final destinations in and outside London, consider renting a car from LHR’s onsite car rentals. Some of these car rentals include Hertz, Europcar, and National. Their rental desks can be accessed in your arrivals Hall.
  • If you arrive at LHR late, you may consider spending your night in the onsite Sofitel. The hotel offers direct access to Terminal 5 via a walkway. Its amenities feature free airport shuttle services to the other terminals.

Prefer to fly direct from Ottawa to London Heathrow Airport?

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

Direct departures

Ottawa to London Heathrow

Monday

Aegean Airlines, Air Canada, Austrian Airlines, +4 more

Aegean Airlines, Air Canada, +5 more

Wednesday

Aegean Airlines, Air Canada, Austrian Airlines, +4 more

Aegean Airlines, Air Canada, +5 more

Thursday

Aegean Airlines, Air Canada, Austrian Airlines, +4 more

Aegean Airlines, Air Canada, +5 more

Saturday

Aegean Airlines, Air Canada, Austrian Airlines, +4 more

Aegean Airlines, Air Canada, +5 more

See more direct flights

Direct returns

London Heathrow to Ottawa

Monday

Aegean Airlines, Air Canada, Austrian Airlines, +4 more

Aegean Airlines, Air Canada, +5 more

Wednesday

Aegean Airlines, Air Canada, Austrian Airlines, +4 more

Aegean Airlines, Air Canada, +5 more

Thursday

Aegean Airlines, Air Canada, Austrian Airlines, +4 more

Aegean Airlines, Air Canada, +5 more

Saturday

Aegean Airlines, Air Canada, Austrian Airlines, +4 more

Aegean Airlines, Air Canada, +5 more

See more direct flights

Reviews of the top airline flying from Ottawa to Heathrow

 
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 Heathrow? 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 9851 reviews
7.1Comfort
7.3Boarding
6.3Food
7.8Crew
6.8Entertainment
Airline reviews

In flight entertainment system did not work across the whole plane for entire flight. Seats were very cramped. Cabin temperature was freezing cold. Crew was miserable and answered everyone in a short and barking manner. I’ve flown air Canada many many times and never had an issue. But this was unpleasant.

4.0 OkayAnonymous, Jul 2025YYZ - LHR
Read more Air Canada reviews

In flight entertainment system did not work across the whole plane for entire flight. Seats were very cramped. Cabin temperature was freezing cold. Crew was miserable and answered everyone in a short and barking manner. I’ve flown air Canada many many times and never had an issue. But this was unpleasant.

They screwed up so bad, I asked for a short check for my luggage since we had a 21 hour overnight layover in London at a hotel. They said I have to receive my luggage in London because it’s an overnight layover. Get to London, nope, my bags aren’t coming off they are staying in terminal 5 over night and going straight to Ibiza. So we had no luggage for a whole day and basically stuck with no clothes or washroom stuff. Finally get to Ibiza and my luggage is completely smashed and damaged and missing a wheel. Now I have to drag this 50 lbs luggage around Ibiza islands for 10 days. Wtf. So pissed off Air Canada is LITERALLY THE WORST AIRLINE IN THE WORLD

Staff was very courteous and kept things organized. We will definitely use Air Canada for further travel

Great flights. 90 minute departure delay for maintenance issues, not a great start but, afer that very good. Didn't pay extra for seats and lucked into a window and an aisle seat. Price was excellent at the super low economy level.

Great flight ✈️ I requested a vegan meal and don’t think offering frozen fruit cup for breakfast is a good idea people want something warm or neutral like the muffin but it was cold from being in the paper bag with the frozen fruit 🧐 and unfortunately I didn’t have either and I don’t like wasting food so that was a disappointment. Flight was on time departure and arrival flight crew were good.

Just a little improvement on food but everything is excellent

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

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.

From my experience, I see there is room for a greater mixture of cultures, for example, a mix of the nationality of cabin crews, food, music, food, etc.

on time quick service but food so so and seats very small. no leg room. I think passengers should not be bringing so large carry on suitcases and should have free check in. Then boarding and unloading would be faster

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

Information on your arrival and departure airports

Ottawa (YOW)
Heathrow (LHR)

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