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Cheap flights from London to Ottawa International

Compare London to Ottawa International flight deals

Find the cheapest month or even day of the year to fly to Ottawa International

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Flight deals from London to Ottawa International

Looking for a cheap last-minute deal or the best return flight from London to Ottawa International Airport? If you want to travel next month, return fares start from P29,969. Find the lowest prices on one-way and return tickets right here.
Ottawa.P16,575 per passenger.Departing Fri, 5 Jun.One-way flight with Ryanair.Outbound indirect flight with Ryanair, departs from London Gatwick on Fri, 5 Jun, arriving in Ottawa International.Price includes taxes and charges.From P16,575, select.
Ottawa.P21,738 per passenger.Departing Mon, 14 Sep.One-way flight with Ryanair.Outbound indirect flight with Ryanair, departs from London Stansted on Mon, 14 Sep, arriving in Ottawa International.Price includes taxes and charges.From P21,738, select.
Ottawa.P21,864 per passenger.Departing Mon, 31 Aug.One-way flight with Ryanair.Outbound indirect flight with Ryanair, departs from London Luton on Mon, 31 Aug, arriving in Ottawa International.Price includes taxes and charges.From P21,864, select.
Ottawa.P25,751 per passenger.Departing Fri, 29 May.One-way flight with Air Transat.Outbound direct flight with Air Transat departs from London Gatwick on Fri, 29 May, arriving in Ottawa International.Price includes taxes and charges.From P25,751, select.
Ottawa.P26,500 per passenger.Departing Mon, 6 Jul.One-way flight with Wizz Air.Outbound indirect flight with Wizz Air, departs from London Luton on Mon, 6 Jul, arriving in Ottawa International.Price includes taxes and charges.From P26,500, select.
Ottawa.P29,832 per passenger.Departing Tue, 1 Dec.One-way flight with Virgin Atlantic.Outbound indirect flight with Virgin Atlantic, departs from London Gatwick on Tue, 1 Dec, arriving in Ottawa International.Price includes taxes and charges.From P29,832, select.
Ottawa.P29,851 per passenger.Departing Mon, 5 Oct.One-way flight with Virgin Atlantic.Outbound indirect flight with Virgin Atlantic, departs from London Heathrow on Mon, 5 Oct, arriving in Ottawa International.Price includes taxes and charges.From P29,851, select.
Ottawa.P29,855 per passenger.Departing Thu, 14 Jan.One-way flight with Virgin Atlantic.Outbound indirect flight with Virgin Atlantic, departs from London Gatwick on Thu, 14 Jan, arriving in Ottawa International.Price includes taxes and charges.From P29,855, select.
Ottawa.P30,002 per passenger.Departing Thu, 4 Mar.One-way flight with Air France.Outbound indirect flight with Air France, departs from London Gatwick on Thu, 4 Mar, arriving in Ottawa International.Price includes taxes and charges.From P30,002, select.
Ottawa.P30,002 per passenger.Departing Fri, 27 Nov.One-way flight with Air France.Outbound indirect flight with Air France, departs from London Gatwick on Fri, 27 Nov, arriving in Ottawa International.Price includes taxes and charges.From P30,002, select.
Ottawa.P30,002 per passenger.Departing Thu, 4 Feb.One-way flight with Air France.Outbound indirect flight with Air France, departs from London Gatwick on Thu, 4 Feb, arriving in Ottawa International.Price includes taxes and charges.From P30,002, select.
Ottawa.P30,276 per passenger.Departing Mon, 3 May.One-way flight with Air France.Outbound indirect flight with Air France, departs from London Gatwick on Mon, 3 May, arriving in Ottawa International.Price includes taxes and charges.From P30,276, select.
Ottawa.P30,362 per passenger.Departing Thu, 22 Apr.One-way flight with Air France.Outbound indirect flight with Air France, departs from London Heathrow on Thu, 22 Apr, arriving in Ottawa International.Price includes taxes and charges.From P30,362, select.
Ottawa.P34,834 per passenger.Departing Sun, 7 Jun.One-way flight with Air Transat.Outbound direct flight with Air Transat departs from London Gatwick on Sun, 7 Jun, arriving in Ottawa International.Price includes taxes and charges.From P34,834, select.
Ottawa.P35,258 per passenger.Departing Sun, 4 Oct.One-way flight with Air Transat.Outbound direct flight with Air Transat departs from London Gatwick on Sun, 4 Oct, arriving in Ottawa International.Price includes taxes and charges.From P35,258, select.
Ottawa.P37,260 per passenger.Departing Fri, 4 Sep.One-way flight with Air Transat.Outbound direct flight with Air Transat departs from London Gatwick on Fri, 4 Sep, arriving in Ottawa International.Price includes taxes and charges.From P37,260, select.

Find the cheapest month to fly from London to Ottawa International

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like London to Ottawa International flights are currently cheapest in June.
May
from P25,751
Jun
from P16,575
Jul
from P26,500
Aug
from P21,864
Sep
from P21,738
Oct
from P29,851
Nov
from P30,002
Dec
from P29,832
Jan
from P29,855
Feb
from P30,002
Mar
from P30,002
Apr
from P30,362

Direct flights from London to Ottawa International

London to Ottawa International: Alternative routes

Compare routes from London to Ottawa below. You may find an airport to fly into that's cheaper, faster, or easier than Ottawa International.

Ottawa International

11km from central Ottawa
ClosestCheapest
from P16,575
Search flights

Ottawa Gatineau

15km from central Ottawa
Search flights

London to Ottawa: Flight information

The things to know before you go.
Cheapest flight foundP16,575
Cheapest month to flyJune
Average flight time7 hrs, 56 mins
Most popular airlineLufthansa
Average flights per week47

Finding cheap flights from London to Ottawa International: Frequently asked questions

The best price we found for a return flight from London to Ottawa International is P29,969. This is an estimate based on information collected from different airlines and travel providers over the last 4 days and is subject to change and availability.
7 hours and 56 minutes is the average flight time from London to Ottawa International.
Lufthansa, Air Canada and TAP Air Portugal fly direct from London to Ottawa International.
As of May 2026, there are 47 flights per week flying from London to Ottawa International.
The cheapest month to fly from London to Ottawa International is usually June.
After crunching the numbers on our flight calendar, we found that it is currently cheapest to fly from London to Ottawa International Airport on Sunday, 7 June 2026.
Yes – the average flight time is 7 hours and 56 minutes.
We show every price from over 1,200 airlines and travel agents, comparing them all so you don’t have to. If you know you want to fly to Ottawa International but you’re not ready to book, set up a Price Alert. We’ll track prices for you, and let you know when they rise or fall.
We crunched all the numbers in our flight calendar and it looks like the cheapest time to book a flight to Ottawa is around 40 days in advance, so don’t leave your flight to the last minute.
The cheapest airline that flies to Ottawa International is Air Transat .

Travelling from London to Ottawa Macdonald-Cartier International Airport (YOW): What you need to know

  • London Heathrow Airport (LHR) is London's main airport. Explore your options for reserving a flight from London to Ottawa Macdonald-Cartier International Airport (YOW) taking off from here.

  • The average duration of a direct London to Ottawa Macdonald-Cartier International Airport flight is 7 hours 40 minutes.

  • Ottawa Macdonald-Cartier International Airport is located in Ottawa. The city runs on the UTC-5 timezone and is five hours behind London.

  • London Heathrow Airport (LHR) to Ottawa Macdonald-Cartier International Airport (YOW) is the busiest route, with 3 direct services every week. You can travel from LHR to YOW on Air Canada's 12:40pm departure.

  • Your flight from London to YOW won't wait if you're running late, so be at the airport on time. Arrive up to one hour in advance for domestic flights and two hours ahead when you're flying internationally.

  • Flying during a popular month such as July? Major public holidays and other popular periods can mean longer queues and delays at check-in and security. Play it safe and arrive up to four hours before international flights and two hours before domestic departures.

Airports in London

London Heathrow Airport (LHR)

  • London Heathrow Airport (LHR) offers an easy route to your destination. Nonstop flights from London to Ottawa Macdonald-Cartier International Airport (YOW) operate out of this terminal.

  • When departing from LHR, you can catch a direct flight from London to Ottawa Macdonald-Cartier International Airport with Air Canada.

  • Most travellers prefer to book seats with Air Canada from LHR to YOW.

  • We make it a breeze to find cheap flights from London to YOW with a stopover. To explore the options leaving from London Heathrow Airport (LHR), uncheck 'Direct flights only.' Next, choose a flight that has a stop long enough to tour your chosen city. Major stopovers between LHR and YOW include:

    • Toronto Pearson International Airport (YYZ)

    • Montreal-Trudeau International Airport (YUL)

    • Halifax Stanfield International Airport (YHZ)

  • LHR is about 24 kilometers from central London. If you're ride-sharing, driving or catching a taxi from the centre, it'll take you 45 minutes or so to get there, depending on the traffic. If you're planning to take public transport, expect the trip time to be around 25 minutes.

  • Planning to catch an early flight from London to Ottawa Macdonald-Cartier International Airport? Avoid the stress of rushing to the terminal (and get some bonus sleep) by choosing one of these hotels close to London Heathrow Airport:

  • 68% of flights leaving from London Heathrow Airport land at their destination on schedule.

London Gatwick Airport (LGW)

  • Make the most of your holiday with a stopover on your flight from London to Ottawa Macdonald-Cartier International Airport. Check out these connections between London Gatwick Airport and YOW:

    • Toronto Pearson International Airport (YYZ)

    • Montreal-Trudeau International Airport (YUL)

    • Quebec City Jean Lesage International Airport (YQB)

  • On public transport, you can travel from central London to LGW in around 1 hour 20 minutes. The terminal is roughly 48 kilometers away, and getting there by car will take approximately 1 hour 5 minutes.

  • Catching an early morning flight? Think about staying at one of these hotels near London Gatwick Airport the day before your London to YOW flight:

  • London Gatwick Airport has an on-time performance of 70%. This figure provides insight into how often flights departing from this airport arrive on time.

London Stansted Airport (STN)

  • From central London, STN is around 56 kilometers away. It'll take you roughly 1 hour 5 minutes to reach the airport by car and 45 minutes or so if you take public transport.

  • Sleep a little longer, move a little slower, and still make your London to Ottawa Macdonald-Cartier International Airport flight with time to spare. These accommodation options near London Stansted Airport make getting to the terminal a breeze if you're flying out early:

  • Flights departing from STN reach their destination on schedule 65% of the time.

About Ottawa Macdonald-Cartier International Airport (YOW)

Getting from Ottawa Macdonald-Cartier International Airport (YOW) to central Ottawa

  • From Ottawa Macdonald-Cartier International Airport, central Ottawa is around 14 kilometers away. It takes about 20 minutes to reach the city centre by car.

  • It typically takes 35 minutes if you're using public transport.

How to find the cheapest flights from London to Ottawa Macdonald-Cartier International Airport (YOW)

  • The cheapest price we've found for a one-way ticket from London to Ottawa Macdonald-Cartier International Airport is P16,575. For a return flight on this route, the best price is P29,969. Depending on how early you book and the availability, these fares can change.

  • To snap up cheap flights from London to YOW, book your plane ticket four months before your departure date.

  • The best month for picking up cheap London to Ottawa Macdonald-Cartier International Airport tickets is September. Use the 'Whole month' tool to compare flight prices, then select the dates that offer the biggest savings.

  • There's no need to search every day to find out if fares have dropped when you set up a Price Alert. We'll let you know as soon as a better deal comes up on plane tickets from London to YOW.

  • Tailor your flights using filters. Select your ideal departure and arrival times, airlines and total journey duration. You can also sort your results by 'Cheapest,' 'Fastest' or 'Best' flights from London to Ottawa Macdonald-Cartier International Airport.

The best time to fly from London to Ottawa Macdonald-Cartier International Airport (YOW)

  • August is when most people book flights from London to Ottawa Macdonald-Cartier International Airport (YOW). Plan your visit to Ottawa in November if you prefer a quieter experience.

  • Before locking in your London to YOW plane ticket, consider what kind of weather works for you. July is the warmest month in Ottawa, with temperatures ranging from 13ºC (55ºF) to 27ºC (81ºF).

  • Look for cheap tickets from London to Ottawa Macdonald-Cartier International Airport in January if you'd rather travel during cooler conditions. Temperatures are at their lowest then, ranging between -19ºC (-2ºF) and -2ºC (28ºF).

More about Ottawa

  • Once you've booked your flight from London to Ottawa Macdonald-Cartier International Airport, find a hotel that's got location and comfort covered. Make one of these options your base for exploring Ottawa:

  • Rideau Canal National Historic Site and Parliament Hill are just a couple of the leading attractions to add to your Ottawa travel itinerary. Keep the adventure rolling by checking out Rideau Canal, Locks 1 - 8 - Ottawa.

Explore more of Canada

  • Ottawa has plenty going for it, but there are so many other parts of Canada you should also see. About 153 kilometers east of Ottawa, a trip to Montreal will fill your itinerary to the brim. Check out popular attractions like Cirque du Soleil - KURIOS, Montreal Botanical Garden and Saint Joseph's Oratory of Mount Royal.

  • Laval is another sought-after destination in Canada and is around 153 kilometers east of Ottawa. No trip is complete without dropping by Le Cosmodôme, SkyVenture Montréal and illumi Laval.

Prices shown on this page are estimated lowest prices only. Found in the last 45 days.