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YOW - LON

Find cheap flights from Ottawa to London from C$ 432

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 London departing on 3/5. 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
Sun 19/5
Sun 26/5

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These are the airlines KAYAK users have selected most often from within our search results in flight searches from Ottawa to London.
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Ottawa to London.
In the last 7 days, travellers have searched 44,212,662 times on KAYAK, and here is why:

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Cheap flight deals from Ottawa to London (YOW-LON)

Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Ottawa to London 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
12:00 p.m. - 6:20 a.m.YOW-LGW
13h 20m1 stop
8:55 p.m. - 11:42 a.m.LGW-YOW
43h 47m2 stops
C$ 821
Find Deal
Fri, 3 May - Tue, 14 May
11:55 a.m. - 10:45 a.m.YOW-LGW
17h 50m1 stop
12:40 p.m. - 8:10 p.m.LGW-YOW
12h 30m1 stop
C$ 870Porter Airlines
Find Deal
Sun, 19 May - Wed, 12 Jun
8:05 a.m. - 7:55 a.m.YOW-LGW
18h 50m1 stop
9:40 a.m. - 12:27 a.m.LGW-YOW
19h 47m1 stop
C$ 1,009Air Transat
Find Deal
Sat, 15 Jun - Wed, 26 Jun
8:45 p.m. - 7:20 a.m.YOW-LGW
29h 35m1 stop
9:50 a.m. - 11:02 a.m.LGW-YOW
30h 12m1 stop
C$ 1,011Air Transat
Find Deal
Sun, 30 Jun - Fri, 5 Jul
7:00 a.m. - 9:00 p.m.YOW-LHR
9h 00m1 stop
9:30 a.m. - 5:40 p.m.LHR-YOW
13h 10m1 stop
C$ 1,039Air Canada
Find Deal
Wed, 1 May - Wed, 15 May
6:20 p.m. - 9:00 p.m.YOW-LHR
21h 40m1 stop
2:05 p.m. - 8:40 a.m.LHR-YOW
23h 35m1 stop
C$ 1,040Air Canada
Find Deal
Mon, 23 Sep - Wed, 2 Oct
6:40 p.m. - 10:00 a.m.YOW-LHR
10h 20m1 stop
12:05 p.m. - 10:05 p.m.LHR-YOW
15h 00m1 stop
C$ 1,079Lufthansa
Find Deal
Mon, 9 Sep - Sat, 21 Sep
5:55 p.m. - 11:10 a.m.YOW-LHR
12h 15m1 stop
9:30 a.m. - 11:55 p.m.LHR-YOW
19h 25m2 stops
C$ 1,110United Airlines
Find Deal
Tue, 21 May - Wed, 29 May
1:30 p.m. - 7:15 a.m.YOW-LHR
12h 45m1 stop
9:25 a.m. - 11:55 p.m.LHR-YOW
19h 30m2 stops
C$ 1,185United Airlines
Find Deal
Sun, 19 May - Fri, 31 May
2:00 p.m. - 6:35 a.m.YOW-LHR
11h 35m1 stop
11:30 a.m. - 11:42 p.m.LHR-YOW
17h 12m2 stops
C$ 1,189Lufthansa
Find Deal
Mon, 27 May - Sat, 8 Jun

Flights from Ottawa to London - Travel Insights & Trends

Get data-powered insights and trends into flights from Ottawa to London 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 clicked on KAYAK for each day over the last 12 months.
When flying from Ottawa to London, you should consider leaving on a Monday and avoid Saturdays if you are looking for the best rates. For your return to Ottawa, you’ll find the best rates on Thursdays and the most expensive ones on Sundays.

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for flights from Ottawa to London, 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 is January, where tickets cost C$ 973 on average. On the other hand, the most expensive months are December and July, where the average cost of tickets is C$ 1,342 and C$ 1,292 respectively.

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

To calculate daily average prices, KAYAK takes all prices for each day before departure over the last year for flights from Ottawa to London, 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, you should book around 1 week before departure. For the absolute cheapest price, our data suggests you should book 85 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.
In the last 72 hours, the best return deals on flights connecting Ottawa to London were found on Porter Airlines (C$ 870) and Air Transat (C$ 1,009). Scandinavian Airlines proposed the cheapest one-way flight at C$ 643.

Good to know

Low season

February

High season

May

Cheapest flight

C$ 432
Best time to beat the crowds (11% less expensive on average)
Most popular time to fly and prices are also 2% lower on average.
Flight from Ottawa to London Gatwick Airport

When to book flights from Ottawa to London

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

  • Are there facilities for travelling moms at Ottawa Macdonald-Cartier International Airport?

    Yes, there are breastfeeding rooms at YOW. The easily accessible breastfeeding room at Ottawa airport is located at Pre-security, Level 1, and is open 24 hours a day. This room is designed for mothers who need to breastfeed their infants or pump breast milk. It is equipped with a sink, a changing table, a comfortable chair, and a tv.

  • What passenger assistance services are there at Gatwick airport (GWT)?

    Gatwick Airport is committed to providing the highest possible standards of customer care and assistance to all passengers. The hidden disability services include the use of assistive technology to help passengers with hidden disabilities navigate the airport, as well as special assistance during the check-in, security, and boarding processes. There is a sensory room at the North terminal available for passengers who may need a calm and quiet space to relax before their flight.

  • How can I move out of Heathrow airport faster?

    If you want a faster way to get out of London Heathrow Airport, a taxi is usually the best deal. Every terminal has its taxi drop-off and pick-up area, so you can hop out of the plane and be inside a cab in a matter of minutes. Drivers are well-versed in the areas you wish to visit and are fully licensed by the appropriate authorities.

  • Are there airlines offering flights with stops from Ottawa to London?

    Several airlines offer flights with stops from Ottawa to London. This is especially important if you want more control over your itinerary, as you can choose your own layovers. You can check out Air Canada or Air Canada Express. These airlines offer flights with one or more stops between Ottawa and one of the London airports.

  • What is the cheapest flight from Ottawa to London?

    In the last 3 days, the lowest price for a flight from Ottawa to London was C$ 314 for a one-way ticket and C$ 597 for a round-trip.

  • 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 one of these airports: London City, London Gatwick, London Heathrow, London Luton, London Southend, or London Stansted.

  • 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.

  • What is the most popular layover when flying to London from Ottawa?

    Toronto is the most popular layover city among KAYAK users travelling from Ottawa to London.

  • Which is the best airline for flights from Ottawa to London, KLM or SWISS?

    The two airlines most popular with KAYAK users for flights from Ottawa to London are KLM and SWISS. With an average price for the route of C$ 1,137 and an overall rating of 7.8, KLM is the most popular choice. SWISS is also a great choice for the route, with an average price of C$ 1,133 and an overall rating of 7.8.

  • 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.

  • 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 Ottawa to London

  • The city of Ottawa is served by Gatineau-Ottawa Executive Airport (YND) and Ottawa Macdonald-Cartier International Airport (YOW). Ottawa Macdonald-Cartier Airport is the main airport serving the city, which is also well connected with an efficient public transport network. You can get to the airport from downtown Ottawa by OC Transpo bus, which is only 12 km away.
  • You can relax at Aspire Lounge or Air Canada Maple Leaf Lounge while waiting for your flight at YOW. The Aspire Lounge is located in the Domestic Terminal of the Ottawa International Airport (YOW). The lounge is located after the security near gate 20. Just outside gate 18, you'll find the entrance to the Aspire Salon Lounge on the right. To find the Maple leaf lounge, take the stairs before Gate 19 and go to level 1 to access the entrance.
  • You can leave your car in Ottawa International airport's long-term parking lot. It is located on the lot labeled parkade 4 (P4) on the surface lot. You can pay for parking at the long-term lot (P4) near the exit when you return from your trip.
  • If you arrive at London Heathrow Airport (LHR), you may enjoy a spa treatment at terminal 5B at gate 35. Be Relax spa offers a full range of treatments to help you unwind and feel revitalized. To help passengers unwind after lengthy trips, they employ several massage therapy and treatments.
  • If you're flying into London City Airport (LCY), you can request airport assistance from the airport staff. To easily get assistance from the staff at the Arrivals section, we recommend that you get a unique lanyard to wear. You can conveniently get a lanyard from the terminal's information desk.
See more tips

Top 5 airlines serving from Ottawa to London

 
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 London? 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.
7.6
Air TransatOverall score based on 501 reviews
7.7boarding
8.3crew
7.1comfort
6.9entertainment
6.8food
Airline reviews

Super unproffesional flight . Flight attendants were unproffesional. I could hear them gossiping about theor boyfriends the whole trip

2.0 MediocreAnonymous, Apr. 2024CUN - YYZ
Read more about Air Transat reviews

Super unproffesional flight . Flight attendants were unproffesional. I could hear them gossiping about theor boyfriends the whole trip

The connecting flight lay over was 4.00 hours, the gate agent booked me on the next flight which was about to depart at no extra cost.

Actually the flight was on time. New plane, food was okay but not great.

Old plane, hard seats, 1.30 hours delay, while seating on the plane waiting for departure.

Boarding was a little chaotic but it was a very large flight. It just wasn’t fast. And there was no noticeable difference between zones boarding.

Crew was pleasant. Aircraft was very dated and uncomfortable for our nearly 4 hour flight. We were in row 17 and they ran out of purchasable food by the time they got to us.

We were lucky enough to arrive at the right time. The staff at YYZ did our complete check in and luggage tags for us. Even made sure we knew where we were to head next and how to get there. It truly was one of the best and easiest check inside. Thanks team.

Compagnie efficace et bons prix. Les sièges en classe club pourraient être plus confortables.

We could not check in early, I think because we purchases through a third party, therefore once we got to the airport, no seats together, and only middle seats. Will never do that again

I think as another discount flyer they stepped up the bar. I think they should stay around for awhile

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

Flight delayed for 2 hours due to a part. The plane sat waiting for boarding for a long time and during final preflight inspection the issue was found. Why not do the preflight inspection sooner if you know the plane is being used?

The flight I was connecting with waited for me even though my 1st flight was late. I really appreciated that.

First time with Porter and I can say this is best airline company in Canada. Great service, free WiFi, free snack and drinks (including beer and wine). Seats were super comfy on the Embraer jet and I appreciated the folding try table too. Staff were excellent both legs of the trip.

Tight transfer in Montreal. (15 min) However, we made it, as did my luggage.

Check in was slow because of passenger ahead in Reserve line. Seats were somewhat uncomfortable.

First time with Porter. Amazing experience overall, will be my airline of choice in North America whenever possible. Liked the quality of food and how it was served but one suggestion- a hot meal on the longer flights, perhaps?

Delayed by 2.5 hours. This happened previously on my flight from YOW to YVR on Dec. 26.2023. This is a terrible airline. The reason was there was lack of ground crew. This is a known event. AVOID PORTER AIRLINES IF YOU CAN. There is a reason half the plane was empty.

The airline arrival at the downtown airport is a big plus.. Food and beverage was excellent. Their non weather related cancellation is horrible. Overall I gave the airline 7 over 10 Tips for people flying porter from Boston. The airline doesn’t have inflight entertainment No TV No WIFI. Bring your entertainment with you.

The airline arrival at the downtown airport is a big plus.. Food and beverage was excellent. Their non weather related cancellation is horrible. Overall I gave the airline 7 over 10

Wasn’t on the flight- again. Bad weather in Halifax and I was in an accident. What a poor experience to have to pay for all this flight and not be on it

I didn’t make my flight due to poor weather and I had an accident driving there. I tried to get my money back or even credit and nothing. I have an entire flight both to Florida and back that I paid for and no one will give me any money back. I know this isn’t just Porter and it’s 3rd party- however airlines should allow these companies to take money for things they don’t get. I’m so upset. Who can afford a full flight they never take?

Flight Ottawa to Toronto canceled and no crew was available to direct me on what to do. I opened a file and I wait to be compensated.

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.

Once again my complaint is how close the seats are together. Also, the bathrooms were not very clean by the second half of the flight.

Excellent in flight service, perhaps the best we've ever had. Business class feels tired and needs improvement to compete with other airlines. The food looked good but tasted terrible. Check in was quick, the flight arrived early and our luggage was on our flight with us.

Food could be better, lie flat seats could be a little more cushioned. The business class dinner before the flight is excellent at Toronto airport

Food could be better, lie flat seats could be a little more cushioned

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.

Terrible. This airline will cancel flights at very short notice.

Overall good experience, just the delay of 2.5 hrs was a bummer.

Everything was fine except that the ground personnel in Toronto wasn't able to operate the jet bridge, so that everybody was stuck in the plane after landing for 40 min, so I missed my connection.

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.
3/5Fri
1 stop
13h 20mYOW-LGW
C$ 432
7/7Sun
2 stops
14h 50mYOW-LGW
C$ 563
4/7Thu
1 stopAir Transat
21h 40mYOW-LGW
C$ 654
2/5Thu
1 stopPorter Airlines
9h 55mYOW-LGW
C$ 666
21/7Sun
1 stopPorter Airlines
17h 50mYOW-LGW
C$ 667
24/6Mon
2 stopsAir Transat
16h 55mYOW-LGW
C$ 769
29/4Mon
1 stopLufthansa
10h 00mYOW-LHR
C$ 878
29/4Mon
2 stopsLufthansa
17h 45mYOW-LHR
C$ 905
5/5Sun
1 stopUnited Airlines
30h 15mYOW-LHR
C$ 916
30/4Tue
2 stopsUnited Airlines
18h 10mYOW-LHR
C$ 949

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Last minute flights from Ottawa to London

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.
24/4Wed
multi-stopPorter Airlines
32h 25mYOW-LGW
1/5Wed
multi-stopPorter Airlines
16h 48mLGW-YOW
C$ 1,207
24/4Wed
multi-stopScandinavian Airlines
17h 55mYOW-LHR
1/5Wed
multi-stopScandinavian Airlines
26h 12mLHR-YOW
C$ 1,214
24/4Wed
multi-stopLufthansa
11h 35mYOW-LHR
1/5Wed
multi-stopLufthansa
15h 47mLHR-YOW
C$ 1,459
21/4Sun
multi-stopAir Canada
31h 10mYOW-LHR
15/6Sat
multi-stopAir Canada
22h 42mLHR-YOW
C$ 1,651
24/4Wed
multi-stopLufthansa
10h 35mYOW-LHR
1/5Wed
multi-stopLufthansa
15h 47mLHR-YOW
C$ 1,662
21/4Sun
multi-stopAir Canada
29h 35mYOW-LHR
15/6Sat
multi-stopAir Canada
9h 59mLHR-YOW
C$ 1,665
20/4Sat
multi-stopAir Transat
18h 15mYOW-LGW
27/4Sat
multi-stopAir Transat
16h 10mLGW-YOW
C$ 2,101
21/4Sun
multi-stopSWISS
19h 00mYOW-LCY
27/4Sat
multi-stopSWISS
16h 07mLCY-YOW
C$ 2,125
20/4Sat
multi-stopAir Transat
18h 15mYOW-LGW
27/4Sat
multi-stopAir Transat
16h 10mLGW-YOW
C$ 2,170
20/4Sat
multi-stopSWISS
16h 45mYOW-LCY
27/4Sat
multi-stopSWISS
16h 07mLCY-YOW
C$ 2,985

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Ottawa - London Flights

Departure:

Ottawa (YOW)Canada

Return flight deals:

London - Ottawa

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