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

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      1. Home
      2. Canada
      3. Ottawa
      4. London Heathrow

      Compare Ottawa 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 dealsCheapest monthFind the best routeRoute infoFAQsTips and advice

      Flight deals from Ottawa to London Heathrow

      Looking for a cheap last-minute deal or the best return flight from Ottawa to London Heathrow? Find the lowest prices on one-way and return tickets right here.
      London.£466 per passenger.Departing Sat, 18 Oct, returning Sat, 25 Oct.Return flight with Porter Airlines and Scandinavian Airlines.Outbound indirect flight with Porter Airlines, departs from Ottawa International on Sat, 18 Oct, arriving in London Heathrow.Inbound indirect flight with Scandinavian Airlines, departs from London Heathrow on Sat, 25 Oct, arriving in Ottawa International.Price includes taxes and charges.From £466, select.
      Sat, 18 OctYOW - LHR with Porter Airlines
      1 stop
      Sat, 25 OctLHR - YOW with Scandinavian Airlines
      1 stop
      from £466
      London.£474 per passenger.Departing Wed, 3 Sep, returning Wed, 10 Sep.Return flight with Air Canada and TAP Air Portugal.Outbound indirect flight with Air Canada, departs from Ottawa International on Wed, 3 Sep, arriving in London Heathrow.Inbound indirect flight with TAP Air Portugal, departs from London Heathrow on Wed, 10 Sep, arriving in Ottawa International.Price includes taxes and charges.From £474, select.
      Wed, 3 SepYOW - LHR with Air Canada
      1 stop
      Wed, 10 SepLHR - YOW with TAP Air Portugal
      1 stop
      from £474
      London.£517 per passenger.Departing Tue, 18 Nov, returning Sun, 23 Nov.Return flight with Virgin Atlantic.Outbound indirect flight with Virgin Atlantic, departs from Ottawa International on Tue, 18 Nov, arriving in London Heathrow.Inbound indirect flight with Virgin Atlantic, departs from London Heathrow on Sun, 23 Nov, arriving in Ottawa International.Price includes taxes and charges.From £517, select.
      Tue, 18 NovYOW - LHR with Virgin Atlantic
      1 stop
      Sun, 23 NovLHR - YOW with Virgin Atlantic
      1 stop
      from £517
      London.£529 per passenger.Departing Mon, 29 Sep, returning Fri, 10 Oct.Return flight with WestJet and Virgin Atlantic.Outbound indirect flight with WestJet, departs from Ottawa International on Mon, 29 Sep, arriving in London Heathrow.Inbound indirect flight with Virgin Atlantic, departs from London Heathrow on Fri, 10 Oct, arriving in Ottawa International.Price includes taxes and charges.From £529, select.
      Mon, 29 SepYOW - LHR with WestJet
      1 stop
      Fri, 10 OctLHR - YOW with Virgin Atlantic
      1 stop
      from £529
      London.£532 per passenger.Departing Fri, 24 Oct, returning Sat, 8 Nov.Return flight with Aer Lingus.Outbound indirect flight with Aer Lingus, departs from Ottawa International on Fri, 24 Oct, arriving in London Heathrow.Inbound indirect flight with Aer Lingus, departs from London Heathrow on Sat, 8 Nov, arriving in Ottawa International.Price includes taxes and charges.From £532, select.
      Fri, 24 OctYOW - LHR with Aer Lingus
      1 stop
      Sat, 8 NovLHR - YOW with Aer Lingus
      1 stop
      from £532
      London.£534 per passenger.Departing Thu, 7 Aug, returning Wed, 27 Aug.Return flight with Air Canada and Aer Lingus.Outbound indirect flight with Air Canada, departs from Ottawa International on Thu, 7 Aug, arriving in London Heathrow.Inbound indirect flight with Aer Lingus, departs from London Heathrow on Wed, 27 Aug, arriving in Ottawa International.Price includes taxes and charges.From £534, select.
      Thu, 7 AugYOW - LHR with Air Canada
      1 stop
      Wed, 27 AugLHR - YOW with Aer Lingus
      1 stop
      from £534
      London.£535 per passenger.Departing Thu, 21 Aug, returning Tue, 2 Sep.Return flight with Air Canada.Outbound indirect flight with Air Canada, departs from Ottawa International on Thu, 21 Aug, arriving in London Heathrow.Inbound indirect flight with Air Canada, departs from London Heathrow on Tue, 2 Sep, arriving in Ottawa International.Price includes taxes and charges.From £535, select.
      Thu, 21 AugYOW - LHR with Air Canada
      1 stop
      Tue, 2 SepLHR - YOW with Air Canada
      1 stop
      from £535
      London.£536 per passenger.Departing Wed, 9 Jul, returning Wed, 10 Sep.Return flight with Air Canada.Outbound indirect flight with Air Canada, departs from Ottawa International on Wed, 9 Jul, arriving in London Heathrow.Inbound indirect flight with Air Canada, departs from London Heathrow on Wed, 10 Sep, arriving in Ottawa International.Price includes taxes and charges.From £536, select.
      Wed, 9 JulYOW - LHR with Air Canada
      1 stop
      Wed, 10 SepLHR - YOW with Air Canada
      1 stop
      from £536
      How did we find these deals? The deals you see here are the lowest prices for flight tickets from Ottawa to London Heathrow found in the last 4 days, and are subject to change and availability.

      Find the cheapest month to fly from Ottawa to London Heathrow

      We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Ottawa to London Heathrow flights are currently cheapest in October.
      Jul
      from £551
      Aug
      from £534
      Sep
      from £474
      Oct
      from £466
      Nov
      from £517
      Dec
      from £537
      Jan
      from £540
      Feb
      from £537
      Mar
      from £565
      Apr
      from £548
      May
      from £598
      Jun
      from £707

      Direct flights from Ottawa to London Heathrow

      Ottawa to London Heathrow: Alternative routes

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

      Ottawa to London: Flight information

      The things to know before you go.
      Cheapest flight found£466
      Cheapest month to flyOctober
      Average flight time6 hrs, 35 mins
      Most popular airlineUnited
      Average flights per week25

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

      The best price we found for a return flight from Ottawa to London Heathrow is £466. 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 35 minutes is the average flight time from Ottawa to London Heathrow.
      United, Aegean Airlines and TAP Air Portugal fly direct from Ottawa to London Heathrow.
      As of July 2025, there are 25 flights per week flying from Ottawa to London Heathrow.
      The cheapest month to fly from Ottawa to London Heathrow is usually October.
      After crunching the numbers on our flight calendar, we found that it is currently cheapest to fly from Ottawa to London Heathrow Airport on Saturday, 18 October 2025.
      Yes – the average flight time is 6 hours and 35 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.

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

      • Planning your trip starts with figuring out where you'll leave from in Ottawa. Ottawa/Macdonald-Cartier International Airport (YOW) is the city's main airport, so check out your options for reserving a flight from Ottawa to London Heathrow Airport (LHR) taking off from here.

      • The timezone in London is UTC+0, which is four hours ahead of Ottawa. London Heathrow Airport is located in London.

      • Your flight from Ottawa to LHR won't wait if you're late, so get to the airport with time to spare. Arrive up to one hour in advance for domestic flights and two hours ahead when you're travelling internationally.

      • During high season, allow for longer wait times and show up earlier. Aim for at least two hours ahead for domestic flights and as much as four hours for international journeys.

      Airports in Ottawa

      Ottawa Gatineau Airport (YND)

      • YND is around 24 kms (15 miles) from central Ottawa. If you're ride-sharing, catching a cab or driving from the centre, it'll take you 20 minutes or so to get there, depending on the traffic. If you're using public transport, expect the travel time to be around 1 hour 40 minutes.

      • Need a handy place to stay before your flight from Ottawa to London Heathrow Airport? Meilleure Auberge and Lovely Room 4mins From Gatineau-Ottawa Airport are near Ottawa Gatineau Airport. They're a particularly good choice if you're jetting out early.

      Ottawa/Macdonald-Cartier International Airport (YOW)

      • Looking to fly out of Ottawa/Macdonald-Cartier International Airport (YOW)? Direct Ottawa to London Heathrow Airport (LHR) plane tickets can be booked from this popular hub.

      • From YOW, direct flights from Ottawa to LHR are offered by Air Canada.

      • On the YOW to LHR route, Air Canada is the airline most travellers rely on.

      • Using public transport, you can travel from central Ottawa to YOW in about 45 minutes. The terminal is roughly 13 kms (8 miles) away, and making the journey by car will take approximately 20 minutes.

      • Taking off bright and early? Think about staying at one of these hotels near Ottawa/Macdonald-Cartier International Airport the day before your Ottawa to LHR flight:

        • Hilton Garden Inn Ottawa Airport

        • Hampton Inn by Hilton Ottawa Airport

        • Days Inn by Wyndham Ottawa Airport

      • 58.21% of flights out of Ottawa/Macdonald-Cartier International Airport arrive according to schedule.

      • YOW is located at 50 Airport Road.

      About London Heathrow Airport (LHR)

      • Consider booking a hotel near LHR if you're catching a late flight from Ottawa to London Heathrow Airport. Pick one of these accommodation options and be in bed sooner:

        • Holiday Inn Express London Heathrow T4

        • Premier Inn Heathrow Airport Terminal 4

        • Crowne Plaza London Heathrow T4 by IHG

      • Pick up a London Heathrow Airport rental car and explore London and beyond with your own set of wheels. Surprice, U-Save and Green Motion are popular providers you can book with here.

      • To get the lowest price, reserve your ride around one week in advance of your Ottawa to London Heathrow Airport flight.

      Getting from London Heathrow Airport (LHR) to central London

      • The centre of London is roughly 16 miles from London Heathrow Airport. Journey times by cab or car hire will vary based on traffic conditions, so do a little research before your trip.

      • It'll take around 1 hour if you're using public transport.

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

      • Currently, £232 is the lowest price we've found for a one-way ticket from Ottawa to London Heathrow Airport. The cheapest price for a return flight is £466. Keep in mind fares may change due to demand at the time of booking.

      • Book two months before your departure date. Research into pricing trends suggests this is the ideal window for finding cheap flights from Ottawa to LHR.

      • The best month for finding cheap Ottawa to London Heathrow Airport tickets is July. Use the 'Whole month' tool to compare prices, then choose the dates with the lowest fares.

      • Finding a cheap plane ticket from Ottawa to LHR is a piece of cake with Price Alerts. Simply set up one of these automatic alerts and we'll get in touch when there's a price drop.

      • Lock in a cheap flight from Ottawa to London Heathrow Airport by using filters. Select your preferred duration, departure time and airlines, then sort the results by 'Cheapest' for the best deals.

      The best time to fly from Ottawa to London Heathrow Airport (LHR)

      • Think about the kind of holiday you want when deciding the best time to fly. February is the quietest month to go to London. July is when most people book flights from Ottawa to London Heathrow Airport (LHR), which may be perfect if you'd rather travel when it's busy.

      • Lock in an Ottawa to LHR plane ticket departing in July if you're eager to visit the city during its warmest month. Expect temperatures in London to range from 11ºC (52ºF) to 26ºC (79ºF).

      • Look for cheap tickets from Ottawa to London Heathrow Airport in January if you want to travel in cooler conditions. Temperatures are at their lowest then, ranging between 0ºC (32ºF) and 9ºC (48ºF).

      More about London

      • After booking your flight from Ottawa to London Heathrow Airport, find a hotel that keeps you close to what you want to see. Make one of these options your base for exploring London:

        • The Z Hotel Piccadilly

        • Hyde Park Executive Apartments

        • Safestay London Elephant & Castle

      • Your visit to London should come with a bit of sightseeing. Leading attractions that belong on your itinerary include The British Museum, Westminster Abbey and Big Ben.

      Explore more of the United Kingdom

      • London has plenty to offer, but there are so many other parts of the United Kingdom waiting to be explored. Around 153 kms (95 miles) north-west of London, a trip to Birmingham will keep you on the move. Start with leading sights like The Windsor Castle, Birmingham Museum & Art Gallery and Birmingham Hippodrome Theatre.

      • If you want to check out another corner of the United Kingdom, head for Bristol, about 145 kms (90 miles) west of London. Banksey, Banksy's You Don't Need Planning Permission to Build Castles in the Sky and Clifton Suspension Bridge are highlights.

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      Plan the rest of your trip from Ottawa to London

      • Car hire from London Heathrow
      • Hotels in London

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

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