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

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

      Compare London Heathrow to Ottawa flight deals

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

      Book the best Ottawa fare with no extra fees

      Flight deals from London Heathrow to Ottawa

      Looking for a cheap last-minute deal or the best return flight from London Heathrow Airport to Ottawa? If you want to travel next month, return fares start from $737. Find the lowest prices on one-way and return tickets right here.
      Ottawa.$732 per passenger.Departing Sat, 3 Oct, returning Sun, 4 Oct.Return flight with United.Outbound indirect flight with United, departs from London Heathrow on Sat, 3 Oct, arriving in Ottawa International.Inbound indirect flight with United, departs from Ottawa International on Sun, 4 Oct, arriving in London Heathrow.Price includes taxes and charges.From $732, select.
      Ottawa.$737 per passenger.Departing Sat, 19 Sep, returning Sun, 20 Sep.Return flight with United.Outbound indirect flight with United, departs from London Heathrow on Sat, 19 Sep, arriving in Ottawa International.Inbound indirect flight with United, departs from Ottawa International on Sun, 20 Sep, arriving in London Heathrow.Price includes taxes and charges.From $737, select.
      Ottawa.$752 per passenger.Departing Fri, 25 Sep, returning Fri, 2 Oct.Return flight with Air Canada.Outbound indirect flight with Air Canada, departs from London Heathrow on Fri, 25 Sep, arriving in Ottawa International.Inbound indirect flight with Air Canada, departs from Ottawa International on Fri, 2 Oct, arriving in London Heathrow.Price includes taxes and charges.From $752, select.
      Ottawa.$762 per passenger.Departing Mon, 28 Sep, returning Mon, 5 Oct.Return flight with Air Canada.Outbound direct flight with Air Canada departs from London Heathrow on Mon, 28 Sep, arriving in Ottawa International.Inbound direct flight with Air Canada departs from Ottawa International on Mon, 5 Oct, arriving in London Heathrow.Price includes taxes and charges.From $762, select.
      Ottawa.$770 per passenger.Departing Wed, 7 Oct, returning Mon, 12 Oct.Return flight with Air Canada.Outbound direct flight with Air Canada departs from London Heathrow on Wed, 7 Oct, arriving in Ottawa International.Inbound direct flight with Air Canada departs from Ottawa International on Mon, 12 Oct, arriving in London Heathrow.Price includes taxes and charges.From $770, select.
      Ottawa.$777 per passenger.Departing Thu, 27 Aug, returning Sun, 13 Sep.Return flight with Air France and KLM.Outbound indirect flight with Air France, departs from London Heathrow on Thu, 27 Aug, arriving in Ottawa International.Inbound indirect flight with KLM, departs from Ottawa International on Sun, 13 Sep, arriving in London Heathrow.Price includes taxes and charges.From $777, select.
      Ottawa.$781 per passenger.Departing Mon, 21 Sep, returning Mon, 28 Sep.Return flight with Air Canada.Outbound direct flight with Air Canada departs from London Heathrow on Mon, 21 Sep, arriving in Ottawa International.Inbound direct flight with Air Canada departs from Ottawa International on Mon, 28 Sep, arriving in London Heathrow.Price includes taxes and charges.From $781, select.
      Ottawa.$784 per passenger.Departing Thu, 24 Dec, returning Fri, 8 Jan.Return flight with Air France.Outbound indirect flight with Air France, departs from London Heathrow on Thu, 24 Dec, arriving in Ottawa International.Inbound indirect flight with Air France, departs from Ottawa International on Fri, 8 Jan, arriving in London Heathrow.Price includes taxes and charges.From $784, select.
      Ottawa.$785 per passenger.Departing Mon, 14 Dec, returning Mon, 28 Dec.Return flight with Air France.Outbound indirect flight with Air France, departs from London Heathrow on Mon, 14 Dec, arriving in Ottawa International.Inbound indirect flight with Air France, departs from Ottawa International on Mon, 28 Dec, arriving in London Heathrow.Price includes taxes and charges.From $785, select.
      Ottawa.$798 per passenger.Departing Mon, 22 Mar, returning Sat, 3 Apr.Return flight with Air France.Outbound indirect flight with Air France, departs from London Heathrow on Mon, 22 Mar, arriving in Ottawa International.Inbound indirect flight with Air France, departs from Ottawa International on Sat, 3 Apr, arriving in London Heathrow.Price includes taxes and charges.From $798, select.
      Ottawa.$805 per passenger.Departing Tue, 1 Jun, returning Tue, 15 Jun.Return flight with Air France.Outbound indirect flight with Air France, departs from London Heathrow on Tue, 1 Jun, arriving in Ottawa International.Inbound indirect flight with Air France, departs from Ottawa International on Tue, 15 Jun, arriving in London Heathrow.Price includes taxes and charges.From $805, select.
      Ottawa.$806 per passenger.Departing Sat, 12 Jun, returning Sun, 4 Jul.Return flight with KLM and Air France.Outbound indirect flight with KLM, departs from London Heathrow on Sat, 12 Jun, arriving in Ottawa International.Inbound indirect flight with Air France, departs from Ottawa International on Sun, 4 Jul, arriving in London Heathrow.Price includes taxes and charges.From $806, select.
      Ottawa.$806 per passenger.Departing Wed, 7 Apr, returning Thu, 15 Apr.Return flight with KLM and Air France.Outbound indirect flight with KLM, departs from London Heathrow on Wed, 7 Apr, arriving in Ottawa International.Inbound indirect flight with Air France, departs from Ottawa International on Thu, 15 Apr, arriving in London Heathrow.Price includes taxes and charges.From $806, select.
      Ottawa.$807 per passenger.Departing Mon, 17 May, returning Tue, 25 May.Return flight with KLM and Air France.Outbound indirect flight with KLM, departs from London Heathrow on Mon, 17 May, arriving in Ottawa International.Inbound indirect flight with Air France, departs from Ottawa International on Tue, 25 May, arriving in London Heathrow.Price includes taxes and charges.From $807, select.
      Ottawa.$807 per passenger.Departing Sat, 29 May, returning Mon, 14 Jun.Return flight with KLM and Air France.Outbound indirect flight with KLM, departs from London Heathrow on Sat, 29 May, arriving in Ottawa International.Inbound indirect flight with Air France, departs from Ottawa International on Mon, 14 Jun, arriving in London Heathrow.Price includes taxes and charges.From $807, select.
      Ottawa.$935 per passenger.Departing Thu, 27 Aug, returning Sun, 30 Aug.Return flight with KLM and Air France.Outbound indirect flight with KLM, departs from London Heathrow on Thu, 27 Aug, arriving in Ottawa International.Inbound indirect flight with Air France, departs from Ottawa International on Sun, 30 Aug, arriving in London Heathrow.Price includes taxes and charges.From $935, select.

      Find the cheapest month to fly from London Heathrow to Ottawa

      We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like London Heathrow to Ottawa flights are currently cheapest in October.
      Aug
      from $935
      Sep
      from $737
      Oct
      from $732
      Nov
      from $1,099
      Dec
      from $785
      Jan
      from $1,119
      Feb
      from $1,120
      Mar
      from $961
      Apr
      from $806
      May
      from $807
      Jun
      from $805
      Jul
      from $1,066

      Direct flights from London Heathrow to Ottawa

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

      Alternative London Heathrow to Ottawa routes

      Looking for the cheapest, fastest or easiest route from London Heathrow to Ottawa? You could fly into the following airports instead.

      Ottawa International

      11km from central Ottawa
      ClosestCheapest
      from $732
      Search flights

      Ottawa Gatineau

      15km from central Ottawa
      Search flights

      London to Ottawa: Flight information

      The things to know before you go.
      Cheapest flight found$732
      Cheapest month to flyOctober
      Average flight time7 hrs, 58 mins
      Most popular airlineLufthansa
      Average flights per week27

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

      There are 2 airports in Ottawa: Ottawa International and Ottawa Gatineau.
      The best price we found for a return flight from London Heathrow to Ottawa is $732. 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 58 minutes is the average flight time from London Heathrow to Ottawa.
      Lufthansa, Air Canada and TAP Air Portugal fly direct from London Heathrow to Ottawa.
      As of August 2026, there are 27 flights per week flying from London Heathrow to Ottawa.
      The cheapest month to fly from London Heathrow to Ottawa is usually October.
      If you're flying from London Heathrow Airport, the cheapest airport near Ottawa is Ottawa International – which is 11.2 km away from the centre of Ottawa. We've found flights into this airport from $732.
      After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from London Heathrow Airport to Ottawa on Saturday, 3 October 2026.
      Yes – the average flight time is 7 hours and 58 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 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.

      In August, the average temperature is usually around 19°C. July is typically the warmest month in Ottawa, when it usually averages around 25°C. You can expect the least rain in February. The coldest month is January, with temperatures averaging -16°C. The rainiest month is June.
      Currently, United and Air Canada offer the cheapest flight tickets to Ottawa.

      Flying from London Heathrow Airport (LHR) to Ottawa: what you need to know

      • Around 6 hours 35 minutes is how long you can expect to be travelling on a direct flight from London Heathrow Airport to Ottawa.

      • London Heathrow Airport is located in London. Following the UTC-4 timezone, Ottawa is four hours behind London.

      • With two weekly flights between the two airports, London Heathrow Airport (LHR) to Ottawa/Macdonald-Cartier International Airport (YOW) is the most popular route. Air Canada operates the earliest flight at 12:40. If you're eager to get more out of your day before taking off, the latest departure from LHR to YOW is with Air Canada at 14:05.

      • For hassle-free travel, arrive at the airport two hours ahead of international flights and one hour before domestic departures. This will give you enough time to catch your LHR to Ottawa flight.

      • You can expect longer queues during popular months like July. Arriving up to four hours ahead of an international flight and two hours for domestic departures will give you plenty of time for security and boarding.

      • You can book a direct London Heathrow Airport to Ottawa ticket. Start your journey at LHR and end it at Ottawa/Macdonald-Cartier International Airport (YOW).

      • Take to the skies with Air Canada. This well-known carrier offers direct flights from London Heathrow Airport to Ottawa.

      • We make it simple to book plane tickets from LHR to Ottawa with a stopover. To see all your options, uncheck 'Direct flights only.' Next, pick a flight with a stop long enough to tour the city of your choice. The most sought-after stopovers include:

        • Pearson International Airport (YYZ)

        • Montreal-Pierre Elliott Trudeau International Airport (YUL)

        • Halifax Stanfield International Airport (YHZ)

      • Located around 26 kilometres from central London, LHR can be reached in about 55 minutes by car, depending on traffic. The journey on public transport will take roughly 1 hour.

      • Want a stress-free start to your holiday? Stay near LHR. Whether you've booked an early flight from London Heathrow Airport to Ottawa or just don't want to be rushed, these hotels are a convenient choice:

      • When it comes to London Heathrow Airport's on-time performance, 68.18% of flights complete their journey on time.

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

      • $596 is the lowest price we've found for a one-way London Heathrow Airport to Ottawa flight. A round-trip ticket right now is $732. Depending on how early you book and the availability, these fares can change.

      • Book five months before you travel. Research on pricing trends suggests this is the ideal window for finding cheap flights from LHR to Ottawa.

      • September is the best month for nabbing an incredible deal on London Heathrow Airport to Ottawa tickets. If you need to travel at a different time of year, the 'Whole month' tool will give you the lowest prices for each month.

      • Cut down on the time spent looking for cheap flights from LHR to Ottawa by creating a Price Alert. You'll get an email or push notification on the app when a lower fare becomes available.

      • Find an affordable flight from London Heathrow Airport to Ottawa with the help of our filters. Select your preferred duration, departure time and airlines, then sort the results by 'Cheapest' to see the best deals.

      Airports in Ottawa

      Ottawa Gatineau Airport (YND)

      • The distance from Ottawa Gatineau Airport (YND) to central Ottawa is roughly 24 kilometres. It'll take you about 20 minutes to reach the centre driving.

      • It typically takes 1 hour 40 minutes to get there using public transport.

      • Stay just a quick transfer away if you're coming in on a late flight from London Heathrow Airport to Ottawa. Meilleure Auberge is a comfortable option close to YND. Or check in and relax at Lovely Room 4mins From Gatineau-Ottawa Airport before travelling to your final destination.

      • Go beyond Ottawa and explore places that aren't on most itineraries with your own wheels. You can pick up an Ottawa Gatineau Airport rental car from Hertz.

      • Reserve your vehicle from Ottawa Gatineau Airport at least a few weeks in advance of your flight from LHR to Ottawa. If you're travelling during a busy period, book even earlier to get the lowest price possible.

      Ottawa/Macdonald-Cartier International Airport (YOW)

      • After your flight from London Heathrow Airport to Ottawa has arrived, you can make your way to the city centre in around 20 minutes by car. Central Ottawa is roughly 13 kilometres from Ottawa/Macdonald-Cartier International Airport (YOW).

      • The trip will take about 45 minutes on public transport.

      • Place the 'Do not disturb' sign on your door and rest at a hotel near YOW. Here are a few options where you can take a load off after your LHR to Ottawa flight:

      • Forget about public transport timetables or cab lines. Grab an Ottawa/Macdonald-Cartier International Airport rental car and take your trip in whatever direction you choose. Compare availability and rates from Routes Car Rentals, Alamo and Budget.

      • Avoid paying more than you need to. Reserving your ride two weeks ahead of your arrival at YOW will help you save.

      • The address for Ottawa/Macdonald-Cartier International Airport is 50 Airport Road.

      Best time to go to Ottawa

      • Carefully consider your travel dates before locking in your flight from London Heathrow Airport to Ottawa. The city buzzes in peak season, but hotel rates are usually higher and attractions can be crowded. Visit Ottawa in the low season if you like a more relaxed vibe.

      • The warmest month in Ottawa is July, with temperatures ranging between 13ºC (55ºF) and 27ºC (81ºF). Book your London Heathrow Airport to Ottawa flight ticket then if that's your ideal forecast.

      • Search for cheap tickets from LHR to Ottawa in January if you like travelling in cooler conditions. Temperatures are at their lowest then, ranging between -19ºC (-2ºF) and -2ºC (28ºF) on average.

      More about Ottawa

      • Once you've booked your flight from London Heathrow Airport to Ottawa, find a hotel that offers both comfort and a great location. Make one of these options your base for exploring Ottawa:

      • All great adventures should include a little sightseeing. Rideau Canal, Parliament Hill and National Gallery of Canada are attractions you won't want to skip in Ottawa.

      Explore more of Canada

      • Toronto is just one of the many cities in Canada waiting to be discovered after you've experienced Ottawa. Around 354 kilometres away to the south-west, well-known attractions include CN Tower, Royal Ontario Museum and Go Tours Canada - Distillery District.

      • Around 153 kilometres east of Ottawa, Montreal is another favourite stop in Canada. No visit is complete without checking out Mount Royal Park, Montreal Botanical Garden and Saint Joseph's Oratory of Mount Royal.

      Plan smart, explore more

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      Plan the rest of your trip from London to Ottawa

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