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Cheap Flights from Ottawa (YOW) to London (LHR)

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      Travellers and cabin class, 1 Adult, Economy
      United
      TAP Air Portugal
      Lufthansa
      Austrian Airlines
      Aegean Airlines
      Air Canada

      Compare Ottawa International to London Heathrow flight deals

      Find the cheapest month or even day of the year to fly to London Heathrow

      Book the best London Heathrow fare with no extra fees

      Flight deals from Ottawa International to London Heathrow

      Looking for a cheap last-minute deal or the best return flight from Ottawa International Airport to London Heathrow Airport? If you want to travel next month, return fares start from $928. Find the lowest prices on one-way and return tickets right here.
      London.$901 per passenger.Departing Wed, 7 Oct, returning Wed, 14 Oct.Return flight with Lufthansa.Outbound direct flight with Lufthansa departs from Ottawa International on Wed, 7 Oct, arriving in London Heathrow.Inbound direct flight with Lufthansa departs from London Heathrow on Wed, 14 Oct, arriving in Ottawa International.Price includes taxes and charges.From $901, select.
      London.$928 per passenger.Departing Sun, 15 Nov, returning Sun, 22 Nov.Return flight with Virgin Atlantic.Outbound indirect flight with Virgin Atlantic, departs from Ottawa International on Sun, 15 Nov, arriving in London Heathrow.Inbound indirect flight with Virgin Atlantic, departs from London Heathrow on Sun, 22 Nov, arriving in Ottawa International.Price includes taxes and charges.From $928, select.
      London.$934 per passenger.Departing Sun, 8 Nov, returning Fri, 4 Dec.Return flight with Virgin Atlantic.Outbound indirect flight with Virgin Atlantic, departs from Ottawa International on Sun, 8 Nov, arriving in London Heathrow.Inbound indirect flight with Virgin Atlantic, departs from London Heathrow on Fri, 4 Dec, arriving in Ottawa International.Price includes taxes and charges.From $934, select.
      London.$936 per passenger.Departing Wed, 28 Oct, returning Wed, 4 Nov.Return flight with Virgin Atlantic.Outbound indirect flight with Virgin Atlantic, departs from Ottawa International on Wed, 28 Oct, arriving in London Heathrow.Inbound indirect flight with Virgin Atlantic, departs from London Heathrow on Wed, 4 Nov, arriving in Ottawa International.Price includes taxes and charges.From $936, select.
      London.$939 per passenger.Departing Sun, 6 Dec, returning Thu, 10 Dec.Return flight with Virgin Atlantic.Outbound indirect flight with Virgin Atlantic, departs from Ottawa International on Sun, 6 Dec, arriving in London Heathrow.Inbound indirect flight with Virgin Atlantic, departs from London Heathrow on Thu, 10 Dec, arriving in Ottawa International.Price includes taxes and charges.From $939, select.
      London.$943 per passenger.Departing Wed, 2 Dec, returning Sat, 6 Feb.Return flight with Virgin Atlantic.Outbound indirect flight with Virgin Atlantic, departs from Ottawa International on Wed, 2 Dec, arriving in London Heathrow.Inbound indirect flight with Virgin Atlantic, departs from London Heathrow on Sat, 6 Feb, arriving in Ottawa International.Price includes taxes and charges.From $943, select.
      London.$945 per passenger.Departing Mon, 25 Jan, returning Sun, 31 Jan.Return flight with Virgin Atlantic.Outbound indirect flight with Virgin Atlantic, departs from Ottawa International on Mon, 25 Jan, arriving in London Heathrow.Inbound indirect flight with Virgin Atlantic, departs from London Heathrow on Sun, 31 Jan, arriving in Ottawa International.Price includes taxes and charges.From $945, select.
      London.$946 per passenger.Departing Fri, 5 Feb, returning Mon, 15 Feb.Return flight with Virgin Atlantic.Outbound indirect flight with Virgin Atlantic, departs from Ottawa International on Fri, 5 Feb, arriving in London Heathrow.Inbound indirect flight with Virgin Atlantic, departs from London Heathrow on Mon, 15 Feb, arriving in Ottawa International.Price includes taxes and charges.From $946, select.
      London.$946 per passenger.Departing Wed, 3 Mar, returning Mon, 8 Mar.Return flight with Virgin Atlantic.Outbound indirect flight with Virgin Atlantic, departs from Ottawa International on Wed, 3 Mar, arriving in London Heathrow.Inbound indirect flight with Virgin Atlantic, departs from London Heathrow on Mon, 8 Mar, arriving in Ottawa International.Price includes taxes and charges.From $946, select.
      London.$946 per passenger.Departing Wed, 27 Jan, returning Wed, 3 Feb.Return flight with Virgin Atlantic.Outbound indirect flight with Virgin Atlantic, departs from Ottawa International on Wed, 27 Jan, arriving in London Heathrow.Inbound indirect flight with Virgin Atlantic, departs from London Heathrow on Wed, 3 Feb, arriving in Ottawa International.Price includes taxes and charges.From $946, select.
      London.$947 per passenger.Departing Sun, 28 Feb, returning Wed, 10 Mar.Return flight with Virgin Atlantic.Outbound indirect flight with Virgin Atlantic, departs from Ottawa International on Sun, 28 Feb, arriving in London Heathrow.Inbound indirect flight with Virgin Atlantic, departs from London Heathrow on Wed, 10 Mar, arriving in Ottawa International.Price includes taxes and charges.From $947, select.
      London.$952 per passenger.Departing Wed, 31 Mar, returning Thu, 8 Apr.Return flight with Virgin Atlantic.Outbound indirect flight with Virgin Atlantic, departs from Ottawa International on Wed, 31 Mar, arriving in London Heathrow.Inbound indirect flight with Virgin Atlantic, departs from London Heathrow on Thu, 8 Apr, arriving in Ottawa International.Price includes taxes and charges.From $952, select.
      London.$952 per passenger.Departing Tue, 20 Apr, returning Mon, 26 Apr.Return flight with Virgin Atlantic.Outbound indirect flight with Virgin Atlantic, departs from Ottawa International on Tue, 20 Apr, arriving in London Heathrow.Inbound indirect flight with Virgin Atlantic, departs from London Heathrow on Mon, 26 Apr, arriving in Ottawa International.Price includes taxes and charges.From $952, select.
      London.$977 per passenger.Departing Wed, 24 Mar, returning Sun, 9 May.Return flight with Virgin Atlantic.Outbound indirect flight with Virgin Atlantic, departs from Ottawa International on Wed, 24 Mar, arriving in London Heathrow.Inbound indirect flight with Virgin Atlantic, departs from London Heathrow on Sun, 9 May, arriving in Ottawa International.Price includes taxes and charges.From $977, select.
      London.$979 per passenger.Departing Thu, 10 Dec, returning Sat, 16 Jan.Return flight with Virgin Atlantic.Outbound indirect flight with Virgin Atlantic, departs from Ottawa International on Thu, 10 Dec, arriving in London Heathrow.Inbound indirect flight with Virgin Atlantic, departs from London Heathrow on Sat, 16 Jan, arriving in Ottawa International.Price includes taxes and charges.From $979, select.
      London.$980 per passenger.Departing Wed, 28 Apr, returning Fri, 7 May.Return flight with Virgin Atlantic.Outbound indirect flight with Virgin Atlantic, departs from Ottawa International on Wed, 28 Apr, arriving in London Heathrow.Inbound indirect flight with Virgin Atlantic, departs from London Heathrow on Fri, 7 May, arriving in Ottawa International.Price includes taxes and charges.From $980, select.
      How did we find these deals? The deals you see here are the lowest prices for flight tickets from Ottawa International to London Heathrow found in the last 4 days, and are subject to change and availability.

      Find the cheapest month to fly from Ottawa International to London Heathrow

      We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Ottawa International to London Heathrow flights are currently cheapest in October.
      Oct
      from $901
      Nov
      from $928
      Dec
      from $939
      Jan
      from $945
      Feb
      from $946
      Mar
      from $946
      Apr
      from $952
      May
      from $1,009
      Jun
      from $1,008
      Jul
      from $1,352
      Aug
      from $1,352
      Sep
      from $1,315

      Direct flights from Ottawa International to London Heathrow

      Aegean Airlines
      Air Canada
      Austrian Airlines
      Croatia Airlines
      Lufthansa
      MEA
      SriLankan Airlines
      TAP Air Portugal
      United

      Ottawa International to London Heathrow: Alternative routes

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

      London City

      12km from central London
      Closest
      from $1,085
      Search flights

      London Heathrow

      23km from central London
      from $898
      Search flights

      London Gatwick

      40km from central London
      Cheapest
      from $897
      Search flights

      London Luton

      45km from central London
      from $926
      Search flights

      London Stansted

      49km from central London
      from $976
      Search flights

      London Southend

      57km from central London
      from $948
      Search flights

      Ottawa to London: Flight information

      The things to know before you go.
      Cheapest flight found$898
      Cheapest month to flyOctober
      Average flight time6 hrs, 39 mins
      Most popular airlineUnited
      Average flights per week30

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

      The best price we found for a return flight from Ottawa International to London Heathrow is $898. 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.
      6 hours and 39 minutes is the average flight time from Ottawa International to London Heathrow.
      United, TAP Air Portugal and Lufthansa fly direct from Ottawa International to London Heathrow.
      As of October 2026, there are 30 flights per week flying from Ottawa International to London Heathrow.
      The cheapest month to fly from Ottawa International to London Heathrow is usually October.
      After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from Ottawa International Airport to London Heathrow Airport on Wednesday, 7 October 2026.
      Yes – the average flight time is 6 hours and 39 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 London Heathrow 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 London is around 40 days in advance, so don’t leave your flight to the last minute.

      Currently, Lufthansa offers the cheapest flight tickets to London Heathrow.

      Travelling from Ottawa International Airport (YOW) to London Heathrow Airport (LHR): what you need to know

      • Hop on a direct flight from Ottawa International Airport to London Heathrow Airport and you'll be in the air for an average of 6 hours 35 minutes.

      • London is five hours ahead of Ottawa and follows the UTC+0 timezone.

      • You can choose from three weekly Ottawa International Airport to London Heathrow Airport flights. The 18:55 departure with Air Canada is the earliest you can take. Air Canada operates the latest service of the day at 21:00.

      • Arriving two hours before an international flight and one hour ahead of a domestic departure are travel rules to live by. Be at the airport with enough time to catch your YOW to LHR flight.

      • Be prepared for bigger queues in popular months like July. Arriving up to four hours ahead of international flights and two hours for domestic departures is a wise move.

      • Getting to London (and then seeing more of the United Kingdom!) is a snap with Air Canada. This popular carrier offers direct flights from Ottawa International Airport to London Heathrow Airport.

      • The airline that passengers book most often on this route is Air Canada.

      • The carrier with the top on-time arrival performance for YOW to LHR flights is Air Canada.

      How to find the cheapest flights from Ottawa International Airport (YOW) to London Heathrow Airport (LHR)

      • At the moment, $400 is the cheapest price we've seen for a one-way Ottawa International Airport to London Heathrow Airport flight. The best price for a return ticket is $901. Keep in mind that fares could change due to demand when booking.

      • Get cheap tickets from YOW to LHR by booking two months ahead. According to our research, that's the sweet spot for bagging a bargain.

      • July is the cheapest month for flights from Ottawa International Airport to London Heathrow Airport. If you want to fly during a different time of year, the 'Whole month' tool will show you the lowest airfares for each month.

      • Cut down on the time spent looking for cheap flights from YOW to LHR by creating a Price Alert. We'll send you an email or notification through the app when a special offer becomes available.

      • Tailor your trip using filters. Choose your departure and arrival times, total journey duration and airlines. You can also sort the results by 'Fastest,' 'Best' or 'Cheapest' flights from Ottawa International Airport to London Heathrow Airport.

      Handy information about Ottawa International Airport (YOW)

      • YOW's address is 50 Airport Road.

      • Of the departures from Ottawa International Airport, 65% arrive as scheduled at their destination.

      • Ottawa International Airport is about 14 kilometres from central Ottawa. If you're driving, ride-sharing or catching a taxi from the centre, it'll take you 20 minutes or so to arrive, depending on the traffic.

      • Expect a trip time of about 35 minutes on public transport.

      • Looking for a handy hotel near YOW? If you're boarding an early flight from Ottawa International Airport to London Heathrow Airport, these stays will have you sleeping moments from check-in:

      Arriving at London Heathrow Airport (LHR)

      Getting from London Heathrow Airport (LHR) to central London

      • London Heathrow Airport to central London has a drive time of about 45 minutes. It's approximately 24 kilometres away.

      • Travelling by public transport will take you around 25 minutes.

      When to fly to London Heathrow Airport (LHR)

      • It's time to work out your trip dates for your flight from Ottawa International Airport to London Heathrow Airport. July is the most popular month to head to London. If you'd like a more relaxed vibe, go in March.

      • The warmest month in London is July, with temperatures ranging between 11ºC (52ºF) and 26ºC (79ºF). Lock in your flights from Ottawa International Airport to London Heathrow Airport in this month if you enjoy this type of weather.

      • If you want to travel in cooler conditions, search for a cheap ticket from YOW to LHR in January. Temperatures average between 0ºC (32ºF) and 9ºC (48ºF) then.

      Explore more of the United Kingdom

      • You've done London, now it's time to discover more of the United Kingdom. Journey around 257 kilometres north-west to Manchester to tick off its top attractions. From Manchester United Museum & Stadium Tour to The Homes of Football and Museum of Science and Industry, there's plenty to keep you busy.

      • Around 161 kilometres north-west of London, Birmingham is another essential stop in the United Kingdom. Start your sightseeing at Birmingham Museum & Art Gallery, Birmingham Hippodrome Theatre and Bournville Experience.

      Plan smart, explore more

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      Plan the rest of your trip from Ottawa to London

      Prices shown on this page are estimated lowest prices only. Found in the last 12 days.