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YOW - LHR

Find cheap flights from Ottawa to London from $441

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 7/11. 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
0 bags
Mon 6/3
Mon 6/10

Search 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
In the last 7 days travelers have searched 43,693,958 times on KAYAK, and here is why:

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Cheap flight deals from Ottawa to Heathrow (YOW-LHR)

Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip 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 and deals for you by selecting your travel dates.
Choose your dates
6:40 pm - 10:00 amYOW-LHR
10h 20m1 stop
2:05 pm - 10:05 pmLHR-YOW
13h 00m1 stop
$767Lufthansa
Find Deal
Tue, Oct 1 - Wed, Oct 16
6:20 pm - 9:00 pmYOW-LHR
21h 40m1 stop
12:40 pm - 5:39 pmLHR-YOW
9h 59m1 stop
$792Air Canada
Find Deal
Mon, Sep 2 - Fri, Sep 13
3:30 pm - 10:00 amYOW-LHR
13h 30m1 stop
2:05 pm - 10:05 pmLHR-YOW
13h 00m1 stop
$794Lufthansa
Find Deal
Sat, Sep 21 - Wed, Oct 9
1:25 pm - 10:00 amYOW-LHR
15h 35m1 stop
12:40 pm - 5:39 pmLHR-YOW
9h 59m1 stop
$819Air Canada
Find Deal
Thu, Sep 26 - Sat, Oct 5
2:30 pm - 9:40 pmYOW-LHR
26h 10m2 stops
6:00 am - 11:42 pmLHR-YOW
22h 42m2 stops
$852Austrian Airlines
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Mon, May 20 - Tue, Jun 4
3:30 pm - 2:20 pmYOW-LHR
17h 50m2 stops
9:05 am - 4:30 pmLHR-YOW
36h 25m2 stops
$1,024Austrian Airlines
Find Deal
Thu, Sep 26 - Sat, Oct 5
8:10 am - 9:45 pmYOW-LHR
32h 35m2 stops
7:00 am - 5:31 pmLHR-YOW
15h 31m2 stops
$1,066SWISS
Find Deal
Tue, Jul 30 - Tue, Aug 13
6:05 am - 8:40 pmYOW-LHR
9h 35m1 stop
6:50 am - 6:51 pmLHR-YOW
17h 01m2 stops
$1,076United Airlines
Find Deal
Mon, May 27 - Tue, Sep 17
6:05 am - 8:40 pmYOW-LHR
9h 35m1 stop
8:00 am - 11:59 pmLHR-YOW
20h 59m2 stops
$1,143United Airlines
Find Deal
Tue, Jul 30 - Tue, Aug 13
1:25 pm - 9:30 pmYOW-LHR
27h 05m2 stops
6:00 am - 5:31 pmLHR-YOW
16h 31m2 stops
$1,193SWISS
Find Deal
Mon, Jul 1 - Sat, Jul 6

Flights from Ottawa to Heathrow - Travel Insights & Trends

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?

The average price of all flights from Ottawa to London Heathrow Airport clicked on KAYAK for each day over the last 12 months.
If your flying dates are flexible, you should consider flying to London on a Tuesday, as we generally find the cheapest rates on that day for this route. On the other hand, Saturday is the most expensive day to fly from Ottawa to London. For your return ticket, we recommend flying on a Tuesday and avoiding Mondays for the best 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 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 January, where tickets cost $714 on average. On the other hand, the most expensive months are December and June, where the average cost of tickets is $1,005 and $980 respectively.

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

To calculate daily average prices, KAYAK takes all prices for each day before departure over the last year for 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 month.
To get a below average price on the flight from Ottawa to London Heathrow Airport, you should book around 1 week before departure. For the absolute cheapest price, our data suggests you should book 76 days before departure.

Which airlines provide the cheapest flights from Ottawa to London?

The cheapest price for the route for each airline clicked by KAYAK users in the last 72 hours.
The best deals for a one-way ticket found by KAYAK users over the last 3 days were on KLM ($706) and Scandinavian Airlines ($2,054). The cheapest round-trip tickets were found on Lufthansa ($767) and Air Canada ($792).

Good to know

Low season

February

High season

July

Cheapest flight

$441
Best time to beat the crowds with an average 13% drop in price.
Most popular time to fly with an average 17% increase in price.
Flight from Ottawa to London

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 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 Ottawa to London 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 $441 for a one-way ticket and $767 for a round-trip.

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

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

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

    When flying out of Ottawa you will be using Ottawa. You will be landing at London, also known as London Heathrow.

  • 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?

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

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

    The two airlines most popular with KAYAK users for flights from Ottawa to London are United Airlines and Air Canada. With an average price for the route of $1,521 and an overall rating of 7.3, United Airlines is the most popular choice. Air Canada is also a great choice for the route, with an average price of $844 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. Booking your flights between Ottawa and LHR can sometimes prove cheaper using this method.

  • 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 tips for finding a cheap flight from YOW to London

  • 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.
See more tips

Top 3 airlines serving 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.
7.3
United AirlinesOverall score based on 11134 reviews
7.2Comfort
8.1Crew
7.7Boarding
7.1Entertainment
6.7Food
Airline reviews

It was good! Appreciated that it was very on schedule so it made the connecting flight less stressful

8.0 ExcellentAnonymous, Apr 2024YUL - ORD
Read more about United Airlines reviews

It was good! Appreciated that it was very on schedule so it made the connecting flight less stressful

Two flights,both poor. No entertainment. Cramped and uncomfortable seats, little space, the rest was OK. Staff were acceptable good.

The crew was doing their best on an old plane needing updating. Chairs that creaked and wouldn’t stay in position. My tray table was unusable as was on-board entertainment due the audio needing usb earphones (that were not provided). Prior to boarding in Toronto and despite being scheduled for a wheelchair and assistance, we were dropped off by clubcar without a wheelchair which I found myself by a gate. Due to no boarding gate assigned at that time we waited and when it was, it subsequently was moved from 64 to 95. No help could be found so I pushed my husband’s chair to that furthest gate in the airport at the highest speed possible for a 73 year old. And by that I mean I ran. It was a very stressful experience.

Wifi wasn't working on one of the UA flights after boarding.

Leg room was lacking. Legs crammed into seat in front.

T hey did a great job. Flight was on time .

the plane was old. the wifi didn’t work. the entertainment was boring and dated. the charging ports were impossible to find. i was mostly ignored by flight attendants that had no problem speaking to the man beside me. i got two drinks the entire time i was on the plane.

The Polaris experience is top notch. From departure lounge to arrival lounge. Everything was top notch. One of the best first class experience

Crew was not very helpful. They forgot to serve me coffee and had to wait for a long time.It looked as if they were not very happy with what they were doing.

EWR terminal C United Club is great. Flight and everything else mediocre

The 6 hour delay with minimal updates was not handled well. After many complaints from most of the un-boarded passengers, food vouchers were offered. The catering strike meant there was no food or snacks on the plane. Beverage service was heavily impacted, only water or juice was available. The staff at the gate was kind enough to inform that "if you want to eat on the plane, you will need to bring it on when boarding".

It was an excellent experience, traveling from Toronto to Denver with United.

Ontime boarding. Almost 1 hour take off delay. We could have boarded slightly later since the pilots were in traffic

I go am isle seat because it was half empty Food strike no food available

Flight was delayed, jeopardizing the following connections. Food was terrible. Crew was great.

This was the first AC flight in a long time that we experienced no delays or frustrations. The gate attendant was extremely polite and accommodating to my husband who has Parkinson’s disease which made boarding extremely stress free. Flight departed ON TIME and was a smooth ride. If only all my AC experiences could be like this.

Great experience on this Air Canada flight. Everyone was polite and respectful, even the passengers are very polite.

My wife and I especially liked the fact that the Toronto agent went beyond expectation to allow my wife and I to sit together. There was no option for us when we booked our seats. Very thankful!

The flight attendant bumped into me repeatedly time and time again, throughout the entire flight, preventing me from getting any rest. He seemed unaware of his actions and I was very close to saying something, but I didn't because I don't believe he would have understood or altered his behaviour. It was very irritating

I didn’t like the fact that all the customs officers went to lunch so I was in line for 90 minutes due to where the staff directed me. We were told three very different reasons for why the plane was delayed. It was a crowded plane with difficult storage situations for the Carry On bags. The Air Canada airline staff were all very good and professional. I was so disappointed in my cheese and fruit box as the cheese had molded and the fruit wasn’t fresh so I couldn’t eat the majority of the food. This was the last meal I could find as the restaurants had closed when I got in to my destination. I think you could work on improving the food quality.

Another 35 min delay landing No apology no communication or acknowledgment about this

Try to humanize onboarding and take AI out. It's embarrassing and useless

no kiosks to check in with- it’s 2024!!! the flight was so hot and uncomfortable - not sure if that’s what caused a lady to faint during the flight but i was absolutely miserable.

Air Canada from Edmonton to Toronto was disappointing but Lufthansa from Toronto to Frankfurt was excellent.

Overall good experience. Polite crew. Good foodandentertainment. Seats are small and bit congested though.

I ended up buying (for $340) "extra space" seats because I my flying partner was given a STY boarding pass, leading me to conclude that she was on standby and that we had to buy seats on the flight. I later learned that the flight was not sold out and that we could have gotten on as usual. To be honest, I felt swindled.

I'm Canadian. I have the unfortunate experience of pretty not having the choice to fly with them. THEY ARE TERRIBLE.

The process overall was pretty seamless, and the crew were very friendly (especially Michael). Considering we booked expecting Lufthansa and the flight was operated by United, it was still a very good service and journey overall. The in-flight entertainment was great, with lots of quality options. One slight negative was that I had selected a vegetarian meal prior to flying, but received a vegan one. I think there should be more dietary options as it meant I missed out on some food that I would have preferred (and it seemed like the standard meals and snacks had a vegetarian option anyway). There was also a group of people who were moving around a lot and being generally disruptive at the quietest part of the flight, when the lights were off and most people were sleeping. I would have appreciated staff stepping in to encourage them to be mindful of others). Towards the end of the flight (which was very early in the morning in both time zones), the lights suddenly came on and breakfast was served. In my opinion, this was too early, and everyone was rudely awoken from sleep. After breakfast was cleared away, the lights went off again for about 45 minutes, allowing people to sleep some more. Then the lights came on again for landing. It seems like if they had served breakfast later, the lights on-lights off-lights on shenanigans could have been avoided, and people could have slept longer (and staff could have rested longer too).

You only get a chocolate square and small bottle of water.!

to be bussed around the airport, then have to sit on the plane for an hour whilst the plane was deiced not once, but twice, then to have to wait for a tug driver is unacceptable. The Captain was very good at communicating.

Book cheap flights from Ottawa to London

Recent one-way flight deals

 
Only flying one-way? Below are some of the best one-way flight deals from Ottawa to London found on KAYAK in the last 72 hours.
7/11Thu
2 stops
31h 15mYOW-LHR
$441
7/11Thu
1 stop
12h 50mYOW-LHR
$679
6/17Mon
2 stopsKLM
12h 45mYOW-LHR
$706
8/2Fri
2 stopsKLM
12h 45mYOW-LHR
$843
8/2Fri
3 stopsScandinavian Airlines
18h 35mYOW-LHR
$2,054

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Last minute flights from Ottawa to Heathrow

Last minute flight, train and bus deals

 
These last-minute flight deals are the cheapest flights found on KAYAK in the last 72 hours for flights from Ottawa to London that are departing in the next 10 days.
5/7Tue
multi-stop
26h 40mYOW-LHR
5/14Tue
multi-stop
23h 52mLHR-YOW
$932
5/8Wed
multi-stop
29h 15mYOW-LHR
5/22Wed
multi-stop
33h 27mLHR-YOW
$969
5/8Wed
multi-stopAir Canada
14h 30mYOW-LHR
5/22Wed
multi-stopAir Canada
13h 01mLHR-YOW
$974
5/8Wed
multi-stop
29h 35mYOW-LHR
5/14Tue
multi-stop
34h 02mLHR-YOW
$1,019
5/8Wed
multi-stop
29h 15mYOW-LHR
5/22Wed
multi-stop
26h 47mLHR-YOW
$1,038
5/8Wed
multi-stop
13h 20mYOW-LHR
5/22Wed
multi-stop
26h 57mLHR-YOW
$1,135
5/8Wed
multi-stop
30h 55mYOW-LHR
5/22Wed
multi-stop
25h 44mLHR-YOW
$1,152
5/7Tue
multi-stop
22h 40mYOW-LHR
5/14Tue
multi-stop
26h 12mLHR-YOW
$1,242

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Ottawa - London Flights

Departure:

Ottawa (YOW)Canada

Destination:

London (LHR)United Kingdom

Cabin classes:

Browse origins:

  • Flights » 
  • Ottawa

Browse destinations:

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  • Worldwide » 
  • London Heathrow Airport