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YOW - LHR

$292 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 Heathrow departing on 7/5. 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
0 bags
Thu 7/11
Thu 7/18

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 44,212,782 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
9:00 pm - 8:20 amYOW-LHR
54h 20m2 stops
9:05 am - 1:33 amLHR-YOW
45h 28m2 stops
$795Austrian Airlines
Find Deal
Fri, Sep 20 - Sun, Oct 6
1:25 pm - 5:55 pmYOW-LHR
23h 30m2 stops
8:05 pm - 7:03 pmLHR-YOW
26h 58m2 stops
$807SWISS
Find Deal
Fri, Oct 11 - Tue, Oct 29
1:25 pm - 10:00 amYOW-LHR
15h 35m1 stop
2:30 pm - 9:22 amLHR-YOW
23h 52m1 stop
$809Air Canada
Find Deal
Tue, Oct 15 - Sun, Nov 17
1:25 pm - 10:00 amYOW-LHR
15h 35m1 stop
12:40 pm - 10:39 pmLHR-YOW
14h 59m1 stop
$827Air Canada
Find Deal
Tue, Sep 3 - Sat, Sep 21
5:00 pm - 9:35 amYOW-LHR
11h 35m1 stop
3:00 pm - 1:36 amLHR-YOW
14h 36m1 stop
$847Lufthansa
Find Deal
Sat, Oct 19 - Sat, Nov 2
8:00 pm - 9:35 pmYOW-LHR
20h 35m2 stops
8:50 pm - 12:27 amLHR-YOW
32h 37m3 stops
Tue, Sep 3 - Sat, Sep 21
2:00 pm - 6:35 amYOW-LHR
11h 35m1 stop
7:50 pm - 12:28 amLHR-YOW
33h 38m3 stops
Sun, Jul 7 - Wed, Jul 10
2:00 pm - 8:35 amYOW-LHR
13h 35m1 stop
9:30 am - 7:16 pmLHR-YOW
14h 46m2 stops
$966Lufthansa
Find Deal
Tue, Oct 15 - Sun, Nov 17
5:30 pm - 5:55 amYOW-LHR
31h 25m1 stop
8:00 am - 11:59 pmLHR-YOW
20h 59m2 stops
$1,341United Airlines
Find Deal
Sat, Jun 29 - Wed, Jul 31
5:30 pm - 5:55 amYOW-LHR
31h 25m1 stop
4:40 pm - 11:59 pmLHR-YOW
12h 19m1 stop
$1,392United Airlines
Find Deal
Sat, Jun 29 - Wed, Jul 31

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 Sunday, as we generally find the cheapest rates on that day for this route. On the other hand, Wednesday is the most expensive day to fly from Ottawa to London. For your return ticket, we recommend flying on a Tuesday and avoiding Fridays 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 November, where tickets cost $731 on average. On the other hand, the most expensive months are July and June, where the average cost of tickets is $999 and $943 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 39 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 Lufthansa ($292) and SWISS ($309). The cheapest round-trip tickets were found on Austrian Airlines ($795) and SWISS ($807).

Good to know

Low season

February

High season

September

Cheapest flight

$292
Best time to beat the crowds with an average 7% drop in price.
Most popular time to fly and prices are also 4% lower on average.
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 $292 for a one-way ticket and $795 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?

    Star Alliance, and SkyTeam 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 7.4, 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

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

  • 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.
7.4
United AirlinesOverall score based on 10629 reviews
7.2Comfort
7.7Boarding
8.1Crew
7.1Entertainment
6.7Food
Airline reviews

We liked the fully reclinable seats. Had center seats, so it was difficult to talk to spouse. Crew was great

8.0 ExcellentMichael, May 2024DEN - LHR
Read more about United Airlines reviews

We liked the fully reclinable seats. Had center seats, so it was difficult to talk to spouse. Crew was great

Marked by flight delays on all segments of the trip. Food in first class cabin was mediocre and overhead cabin storage was not adequate. Overall, the premium charge for first class cabin was poor and over hyped. This will be our last flight with UA.

We enjoyed that we boarded and took off on time. We didn’t like that our connection flight was a twenty minute walk through the airport with only one hour in between flights.

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.

Experienced flight cancelations and delays in 5 days. They seem pretty common to AC. Experienced with one of AC's check-in agents at the counter of a big liar. She lied and acted (yes like acting in a movie) that an early flight was fully booked and refused to rebook me, but my flight was delayed two hours so I could not make my connection. Later, I got help at the gate to switch the early flight (Big thanks to that agent). Ater boading, I found the early flight was only 2/3 full meaning there was almost one vacant seat in a 3-person seater, and multiple empty 3-seaters. AC is wired that it is filled with good and bad employees. BTW, AC employees seem never smile, or they don't know how.

Flight was delayed at least 4 times then once we boarded they found a problem with the plane and we had to de-plane and wait another hour for a different plane. I was an hour late for my performance.

Not much food/snacks. I had just tea and it was so bitter.

My mother, 80years old, had arranged for wheelchair assist to and from the aircraft cabin and in the airport but, no one showed up for her to de-plane. Apart from Air Canada having a reputation of being late for every leg of its flight so nothing was new this time so this time they did worse by not assisting seniors. I guess our whole family is done with this airline

Because we had to drive to Toronto due to delays in Windsor on our return we had a car in Toronto so we had to drive home

The flight crew was extremely accommodating, finding a place for my guitar. Thank you so much! Departure time, however it was delayed almost an hour because the plane was not at our gate on time. We did make up most of that timing flight, however, but it is always annoying to be delayed for that length of time. I was looking forward to the, but, honestly, it was really bad. Overall, however, my first experience with Canada was really good and I would recommend you. Thx.

Seating for almost 3 hours in the plan before aircraft takeoff. Very exhausted .

The bathroom did not have hand soap. That is unacceptable.

I was seated next to someone who was, to be polite, not a small person. I had to press myself against the wall as I had no personal space. Aside from that the crew was wonderful and they got me home safely, which is the most important part of my journey. I am very appreciative to your air crews for the job they have, which isn't easy, and appreciative of the fact that they are professional and courteous. The employees I encountered on my journey, with the few exceptions I mentioned in a previous review, are a credit to Air Canada.

Air Canada had a lot of delays on our flight going back to Seattle. So much inconvenience for a long trip.

Missed our flight to London and we were put on coach seats to Munich.

Seats were terribly uncomfortable! Couldn’t sleep! I paid for good seats when scheduled with Lufthansa, got crappy mid-section seats on Air Canada!

Cancelled flight, that morning! But got us on an Air Canada flight!

No refreshments apart from a bottle of water. No pillows. No entertainment. Flight delayed by 52 minutes.

The seats are much too narrow and the arm rests are hard and awkwardly high, resulting in shoulder cramps. I am an average sized person ( definitely not overweight). The seats are a similar size to car seats with the added discomfort of incorporating hard plastic arm rests, that force average height individuals (I'm 5 ft 7 (f)) to hold their arms uncomfortably for several hours. The seats are much too close to the ones in front and behind making it extremely difficult to allow fellow passengers to get out, especially when the seat in front is declined. The leg room also necessitates knees banging into passengers backs for the entire flight. This used to be a quality airline who now offer mediocre service for premium cost, coupled with charging exorbitant prices for basic needs, like a seat, or luggage. Blatant and unabashed gouging of clients.

Efficient boarding. Good flight but seats were quite uncomfortable considering we'd already been sitting on two flights, total 13 hours or so. Would have liked to have prices on the menu of amenities on the plane. We could have used more water. Restrooms and nonalcoholic beverages at no extra cost, not much else. I realize these were discount tickets, and the airline has to break even, so I can't say we were expecting amenities to be plentiful. Still, it's nice with long flights to discover a few. Very pleasant crew though.

boarding needs to be streamlined load the back of the plane first

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.

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.
7/5Fri
1 stopLufthansa
10h 00mYOW-LHR
$292
8/28Wed
1 stopLufthansa
10h 35mYOW-LHR
$297
7/21Sun
2 stopsSWISS
25h 00mYOW-LHR
$309
9/30Mon
2 stops
23h 00mYOW-LHR
$451
9/30Mon
3 stops
16h 55mYOW-LHR
$500
9/28Sat
1 stopWestJet
24h 57mYOW-LHR
$528
10/3Thu
3 stops
23h 15mYOW-LHR
$558
10/1Tue
1 stopAir Canada
9h 00mYOW-LHR
$676
10/1Tue
2 stopsUnited Airlines
17h 35mYOW-LHR
$710
6/29Sat
2 stopsUnited Airlines
19h 15mYOW-LHR
$933

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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.
6/12Wed
multi-stopSWISS
18h 45mYOW-LHR
6/19Wed
multi-stopSWISS
16h 39mLHR-YOW
$1,120
6/16Sun
multi-stop
18h 35mYOW-LHR
6/23Sun
multi-stop
28h 49mLHR-YOW
$1,156
6/15Sat
multi-stop
27h 00mYOW-LHR
6/23Sun
multi-stop
28h 49mLHR-YOW
$1,192
6/15Sat
multi-stop
27h 50mYOW-LHR
6/26Wed
multi-stop
23h 53mLHR-YOW
$1,198
6/16Sun
multi-stop
18h 35mYOW-LHR
8/31Sat
multi-stop
17h 33mLHR-YOW
$1,226
6/16Sun
multi-stop
18h 35mYOW-LHR
7/17Wed
multi-stop
26h 08mLHR-YOW
$1,263
6/16Sun
multi-stop
18h 35mYOW-LHR
7/16Tue
multi-stop
26h 43mLHR-YOW
$1,272
6/13Thu
multi-stopKLM
12h 45mYOW-LHR
6/27Thu
multi-stopKLM
13h 20mLHR-YOW
$1,340
6/14Fri
multi-stopScandinavian Airlines
18h 35mYOW-LHR
8/31Sat
multi-stopScandinavian Airlines
17h 33mLHR-YOW
$2,084
6/14Fri
multi-stopScandinavian Airlines
18h 35mYOW-LHR
7/18Thu
multi-stopScandinavian Airlines
16h 33mLHR-YOW
$2,120

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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