Cheap flights from Ottawa to London

Macdonald-Cartier
YOW
London
LON

Flight deals from Ottawa to London

Below you can see the best deals on flights Ottawa — London for upcoming dates. Direct and connecting flights from various airlines — compare prices and choose the right ticket.

The lowest price for the next 2 months is on 8 September, from $260.

Top 10 cheap flights from Ottawa to London

TS
$ 264

Ottawa — London

19:40—07:55
13 Sep 2026
7 h 15 m
Direct flight
TS
$ 265

Ottawa — London

19:40—07:55
11 Sep 2026
7 h 15 m
Direct flight
TS
$ 265

Ottawa — London

19:40—07:55
8 Sep 2026
7 h 15 m
Direct flight
TS
TS
$ 270

Ottawa — London

14:15—09:50
13 Sep 2026
14 h 35 m
1 stop
TS
TS
$ 270

Ottawa — London

14:15—09:50
8 Sep 2026
14 h 35 m
1 stop
TS
TS
$ 270

Ottawa — London

14:15—09:50
6 Sep 2026
14 h 35 m
1 stop
TS
TS
$ 274

Ottawa — London

18:35—10:45
7 Sep 2026
11 h 10 m
1 stop
TS
TS
$ 274

Ottawa — London

16:00—10:45
7 Sep 2026
13 h 45 m
1 stop
TS
TS
$ 274

Ottawa — London

20:55—07:55
11 Sep 2026
30 h
1 stop
TS
TS
$ 274

Ottawa — London

16:00—07:55
10 Sep 2026
10 h 55 m
1 stop

Prices were found in the last 72 hours and may change — check the exact price when you continue.

When is the best time to book a flight from Ottawa to London?

The price of a flight from Ottawa to London changes depending on how far ahead you book. For the best chance of a lower fare, book around 8 days before departure, when the average ticket costs about $569. Fares also tend to climb as the departure date gets closer.

About the Ottawa — London flight

Looking for cheap flights from Ottawa to London? Compare fares from different airlines, check the flight schedule and travel time — and book your Ottawa — London ticket online at the best price.

The route has direct flights — around 14 flights per week, flights are operated by Air Canada, Air Transat, a nonstop flight takes about 6 h 35 min, the distance between the cities is around 5,377 km.

Planning your trip? You may find our London travel guide, how to get from the airport into town and London weather forecast useful. To catch a low fare, use the low-price calendar and the monthly price chart on this page.

Facts about this route

from $260Min. price
SeptemberCheapest
JunePeak season
YesDirect flights
5,377 kmDistance
6 h 35 minTravel time
2Airlines
14 / wkFlights

Flight schedule from Ottawa to London

The table shows direct flights from Ottawa to London on the selected date. The flight takes approximately 6 h 35 min. Regular flights are operated by Air Canada and Air Transat. Departures from Ottawa Macdonald–Cartier International Airport airports, arrivals at Heathrow Airport, London Gatwick Airport and Stansted Airport.

For each flight, the following details are shown: departure time (local), arrival city and airport, flight number and airline, terminal or gate, and status. Click on a flight to open its details and go to ticket search. To view flights on a different day, change the date above the table.

Today
Any time
Last update: 14 Aug 2026

Flight ticket prices by day: Ottawa — London

Below is a calendar of the lowest flight ticket prices for Ottawa — London by day. Pick a convenient date and instantly see the fare. The cheapest flights on this route start from $260 in September, and the most expensive are around $557 in June. If your travel dates are flexible, the calendar will help you find the best price for your preferred period. To view round-trip fares, switch to the "Round trip" tab above the calendar, select your departure date — and the right-hand calendar will highlight the lowest prices for return flights on each day.

 
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Prices by month

Average one-way fares from Ottawa to London by month. Tickets are usually cheapest in February (around $424) and priciest in July (about $655) — use the table and chart below to pick the best time to fly.

MonthAverage priceLevelMonthAverage priceLevelMonthAverage priceLevel
Jan$437lowMay$511mediumSep$530medium
Feb$424lowJun$592highOct$511medium
Mar$499mediumJul$655highNov$449low
Apr$486mediumAug$624highDec$611high

Some values are estimated based on seasonality.

When to fly

Weather in London: it is warmest in July (up to 22 °C on average) and coolest in January (around 7 °C). The driest month is June.

Tickets are usually cheapest in September and most expensive in June. Compare prices and weather by month in the charts below to pick the best time to fly.

Temperature · London

Dry and wet days · London

Wind speed and direction · London

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How to get the best deal on a Ottawa — London ticket

  • Book ahead: fares for Ottawa — London are usually lower 3–8 weeks before departure than at the last minute.
  • Play with your dates — Tuesday, Wednesday and Saturday departures are often cheaper than Friday and Sunday.
  • The cheapest month to fly to London is usually September — plan your trip around it if your dates are flexible.
  • Compare direct and connecting flights: nonstop is faster, while a connection is sometimes noticeably cheaper.
  • Watch the low-price calendar and the monthly price trend on this page — they make it easier to catch a good date.
  • Travelling light? Pick a cabin-baggage-only fare — tickets without checked luggage are noticeably cheaper.
  • Get to the airport in good time — about 2–3 hours before an international departure and roughly an hour before a domestic one.

Airlines

Flights on the Ottawa — London route are operated by 2 airlines; Air Canada runs the most flights (around 57% of all flights). Compare carriers, flight shares and schedules below.

  • Air CanadaAC
    3x/week
    WebsiteFleet: 20346M pax/year
    • Direct flight YOW → LHR3x/week
      Duration
      6h 35m
      Days
      MTWTFSS
    57.1%Open →
  • Air TransatTS
    2x/week
    WebsiteFleet: 405M pax/year
    • Direct flight YOW → LGW2x/week
      Duration
      7h 15m
      Days
      MTWTFSS
    42.9%Open →

Cities and airports on the Ottawa — London route

Flights Ottawa — London depart from Ottawa Macdonald–Cartier International Airport and arrive at Heathrow Airport, London Gatwick Airport, Stansted Airport and London Luton Airport. Below are pages for the cities, countries, and airports on the route: airlines, schedules, and travel guides.

Departure

Ottawa

YOW
Canada
About the cityHow to get thereWeatherAll about the country Canada
Arrival

London

LON
United Kingdom
About the cityHow to get thereWeatherAll about the country United Kingdom
Departure airports
Arrival airports

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Frequently asked questions about the Ottawa — London flight

How long is the flight from Ottawa to London?

A nonstop Ottawa — London flight takes about 6 h 35 min — the distance between the cities is around 5,377 km.

How far is it from Ottawa to London?

The distance from Ottawa to London is about 5,377 km, which a nonstop flight covers in around 6 h 35 min.

Are there direct flights from Ottawa to London?

Yes, there are nonstop flights Ottawa — London — around 14 flights per week.

Which airlines fly from Ottawa to London?

Airlines operating Ottawa — London include Air Canada, Air Transat. See the full list with schedules in the "Airlines" section on this page.

Which airports do Ottawa — London flights use?

Flights from Ottawa depart from Ottawa Macdonald–Cartier International Airport, and arrive at Heathrow Airport, London Gatwick Airport, Stansted Airport. If a city has more than one airport, check which one your ticket uses before you travel.

How much is a ticket from Ottawa to London?

The price of a Ottawa — London ticket depends on your travel date, season and demand: it is usually cheapest to fly in September, and most expensive in June. Tickets typically cost between $260 and $557. Check the current lowest fare and low-price calendar on this page.

When is the best time to book flights Ottawa — London?

Flights Ottawa — London are usually cheaper when booked in advance — a few weeks before departure and away from peak dates; the most budget-friendly month to fly is September. Compare prices by month in the price trend chart on this page.

How can I find the cheapest flights from Ottawa to London?

To catch a low fare Ottawa — London, book a few weeks in advance, keep your dates flexible, and compare airlines and connecting options. The low-price calendar and monthly price chart on this page show the cheapest days and months at a glance: the most budget-friendly month to fly is usually September.

How early should I arrive at the airport?

For international flights, plan to be at the airport about 2–3 hours before departure, and around an hour before a domestic flight. Allow extra time during busy travel seasons and at large hubs, where check-in and security lines can be longer.

Where else you can fly from Ottawa

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Where else you can fly from London

See all
New York CityAmsterdamMadridBarcelonaDublinParisFrankfurt am MainMilanPalmaMalagaEdinburghIstanbulGenevaGlasgowBelfastLisbonFaroZurichNiceRomeLos AngelesCopenhagenAthensAlicanteBerlinSan FranciscoDubaiBostonIbizaTorontoAntalyaMunichChicagoDohaBristolStockholmOsloViennaDusseldorfCardiff

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