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

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Flight deals from London to Ottawa

Looking for a cheap last-minute deal or the best return flight from London to Ottawa? If you want to travel next month, return fares start from $672. Find the lowest prices on one-way and return tickets right here.

Ottawa.$662 per passenger.Departing Mon, 5 Oct, returning Thu, 15 Oct.Return flight with Air Transat.Outbound indirect flight with Air Transat, departs from London Gatwick on Mon, 5 Oct, arriving in Ottawa International.Inbound indirect flight with Air Transat, departs from Ottawa International on Thu, 15 Oct, arriving in London Gatwick.Price includes taxes and charges.From $662, select.

Ottawa.$671 per passenger.Departing Tue, 15 Sep, returning Tue, 22 Sep.Return flight with Air Transat.Outbound direct flight with Air Transat departs from London Gatwick on Tue, 15 Sep, arriving in Ottawa International.Inbound direct flight with Air Transat departs from Ottawa International on Tue, 22 Sep, arriving in London Gatwick.Price includes taxes and charges.From $671, select.

Ottawa.$774 per passenger.Departing Mon, 5 Oct, returning Thu, 15 Oct.Return flight with Air Canada.Outbound direct flight with Air Canada departs from London Heathrow on Mon, 5 Oct, arriving in Ottawa International.Inbound direct flight with Air Canada departs from Ottawa International on Thu, 15 Oct, arriving in London Heathrow.Price includes taxes and charges.From $774, select.

Ottawa.$776 per passenger.Departing Tue, 25 Aug, returning Thu, 24 Sep.Return flight with Air France and KLM.Outbound indirect flight with Air France, departs from London Heathrow on Tue, 25 Aug, arriving in Ottawa International.Inbound indirect flight with KLM, departs from Ottawa International on Thu, 24 Sep, arriving in London Heathrow.Price includes taxes and charges.From $776, select.

Ottawa.$776 per passenger.Departing Mon, 21 Sep, returning Sat, 10 Oct.Return flight with Air France and KLM.Outbound indirect flight with Air France, departs from London Heathrow on Mon, 21 Sep, arriving in Ottawa International.Inbound indirect flight with KLM, departs from Ottawa International on Sat, 10 Oct, arriving in London Heathrow.Price includes taxes and charges.From $776, select.

Ottawa.$778 per passenger.Departing Wed, 26 Aug, returning Fri, 9 Oct.Return flight with Air France and KLM.Outbound indirect flight with Air France, departs from London Heathrow on Wed, 26 Aug, arriving in Ottawa International.Inbound indirect flight with KLM, departs from Ottawa International on Fri, 9 Oct, arriving in London Heathrow.Price includes taxes and charges.From $778, select.

Ottawa.$778 per passenger.Departing Thu, 24 Sep, returning Thu, 1 Oct.Return flight with Air Canada.Outbound direct flight with Air Canada departs from London Heathrow on Thu, 24 Sep, arriving in Ottawa International.Inbound direct flight with Air Canada departs from Ottawa International on Thu, 1 Oct, arriving in London Heathrow.Price includes taxes and charges.From $778, 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 Gatwick 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 Gatwick.Price includes taxes and charges.From $785, select.

Ottawa.$785 per passenger.Departing Thu, 24 Dec, returning Fri, 8 Jan.Return flight with Air France.Outbound indirect flight with Air France, departs from London Gatwick 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 Gatwick.Price includes taxes and charges.From $785, select.

Ottawa.$786 per passenger.Departing Wed, 14 Oct, returning Fri, 8 Jan.Return flight with Air France.Outbound indirect flight with Air France, departs from London Heathrow on Wed, 14 Oct, arriving in Ottawa International.Inbound indirect flight with Air France, departs from Ottawa International on Fri, 8 Jan, arriving in London Gatwick.Price includes taxes and charges.From $786, select.

Ottawa.$799 per passenger.Departing Mon, 22 Mar, returning Sat, 3 Apr.Return flight with Air France.Outbound indirect flight with Air France, departs from London Gatwick 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 Gatwick.Price includes taxes and charges.From $799, select.

Ottawa.$805 per passenger.Departing Tue, 1 Jun, returning Tue, 8 Jun.Return flight with Air France.Outbound indirect flight with Air France, departs from London Gatwick on Tue, 1 Jun, arriving in Ottawa International.Inbound indirect flight with Air France, departs from Ottawa International on Tue, 8 Jun, arriving in London Gatwick.Price includes taxes and charges.From $805, select.

Ottawa.$807 per passenger.Departing Thu, 24 Jun, returning Wed, 7 Jul.Return flight with Air France.Outbound indirect flight with Air France, departs from London Heathrow on Thu, 24 Jun, arriving in Ottawa International.Inbound indirect flight with Air France, departs from Ottawa International on Wed, 7 Jul, arriving in London Heathrow.Price includes taxes and charges.From $807, select.

Ottawa.$808 per passenger.Departing Mon, 17 May, returning Mon, 7 Jun.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 Mon, 7 Jun, arriving in London Gatwick.Price includes taxes and charges.From $808, select.

Ottawa.$808 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 Gatwick.Price includes taxes and charges.From $808, select.

Ottawa.$808 per passenger.Departing Sun, 4 Apr, returning Sun, 18 Apr.Return flight with KLM and Air France.Outbound indirect flight with KLM, departs from London Heathrow on Sun, 4 Apr, arriving in Ottawa International.Inbound indirect flight with Air France, departs from Ottawa International on Sun, 18 Apr, arriving in London Gatwick.Price includes taxes and charges.From $808, select.

Find the cheapest month to fly from London to Ottawa

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like London to Ottawa flights are currently cheapest in October.

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Direct flights from London to Ottawa

Alternative London to Ottawa routes

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

Ottawa International

11km from central Ottawa

ClosestCheapest

from $663

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Ottawa Gatineau

15km from central Ottawa

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London to Ottawa: Flight information

The things to know before you go.

Cheapest flight found	$662
Cheapest month to fly	October
Average flight time	7 hrs, 59 mins
Most popular airline	Lufthansa
Average flights per week	33

Finding cheap flights from London to Ottawa: Frequently asked questions

How many airports are there in Ottawa?

There are 2 airports in Ottawa: Ottawa International and Ottawa Gatineau.

How much are return flights from London to Ottawa?

The best price we found for a return flight from London to Ottawa is $663. 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.

How long does it take to fly from London to Ottawa?

7 hours and 59 minutes is the average flight time from London to Ottawa.

Which airlines fly direct from London to Ottawa?

Lufthansa, Air Canada and TAP Air Portugal fly direct from London to Ottawa.

How many flights are there a week from London to Ottawa?

As of August 2026, there are 33 flights per week flying from London to Ottawa.

When is the cheapest time to fly from London to Ottawa?

The cheapest month to fly from London to Ottawa is usually October.

Which is the cheapest airport to fly into in Ottawa?

If you're flying from London, 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 $663.

Which upcoming date is cheapest to fly from London to Ottawa on?

After crunching the numbers on our flight calendar, we found that it is currently cheapest to fly from London to Ottawa on Monday, 5 October 2026.

Can I get a direct flight from London to Ottawa?

Yes – the average flight time is 7 hours and 59 minutes.

How can I get the best flight deal from London to Ottawa?

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.

When is the best time to book flights to Ottawa?

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.

What’s the weather like in Ottawa?

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.

Which is the cheapest airline to fly from London to Ottawa with?

The cheapest airline that flies to Ottawa is Air Transat .

Travelling from London to Ottawa: what you need to know

You can select from numerous airports when planning a flight from London to Ottawa. Check out your options for leaving London from London Heathrow Airport (LHR), London Gatwick Airport (LGW) or London Stansted Airport (STN). London Luton Airport (LTN) and London City Airport (LCY) also service London.
Ottawa International Airport (YOW) is the primary point of entry to Ottawa.
Around 7 hours 50 minutes is how long you'll be in transit on a direct London to Ottawa flight.
Ottawa is five hours behind London and observes the UTC-5 timezone.
London Heathrow Airport (LHR) to Ottawa International Airport (YOW) is the most popular route that connects these two cities. There are four departures a week to choose from. If you prefer starting your day later, the last flight from London to Ottawa is with Air Canada at 14:05. Go for the first LHR to YOW departure operated by Air Canada at 12:40 to make the most of your first day in Ottawa.
To ensure you make it on your London to Ottawa flight, allow plenty of time to navigate the airport and find your gate. Arriving two hours before international departures and an hour before domestic flights is the general travel rule.
Flying during a popular month such as July? Major public holidays and other popular periods can mean longer lines and delays at check-in and security. Be extra cautious and arrive up to four hours before an international flight and two hours before a domestic departure.

How to find the cheapest flights from London to Ottawa

To score cheap London to Ottawa flights, reserve your trip four months ahead of your departure date.
The best month for landing cheap plane tickets from London to Ottawa is September. Use the 'Whole month' tool to compare prices, then choose the dates with the lowest fares.
Spend less time searching for cheap flights from London to Ottawa by setting up a Price Alert. You'll get an email or push notification on the app when a lower fare becomes available.
Pick your ideal departure and arrival times, number of stops and airlines with the filters. Or sort your London to Ottawa flight results by 'Best,' 'Cheapest' or 'Fastest.'

Flying from London

London Heathrow Airport (LHR)

You can book a direct flight from London to Ottawa jetting off from London Heathrow Airport (LHR). Begin your journey at LHR and end it at Ottawa International Airport (YOW).
Air Canada is a popular carrier that offers direct London to Ottawa plane tickets leaving from LHR.
We make it easy to book a London to Ottawa flight with a stopover. To see the options departing from London Heathrow Airport, uncheck 'Direct flights only.' Then, simply pick a flight offering a stop long enough to explore your chosen city. Some popular stopovers include:
- Toronto Pearson International Airport (YYZ)
- Montreal Pierre Elliott Trudeau Airport (YUL)
- Halifax International Airport (YHZ)
Travelling from central London to LHR takes about 25 minutes by public transport. If you drive, ride-share or grab a taxi, you'll cover the 26 kilometres in 45 minutes or so, depending on traffic conditions.
Want a hassle-free start to your holiday? Stay near London Heathrow Airport. Whether you've booked an early flight from London to Ottawa or just don't like being rushed, these hotels are perfect:
Of the flights that depart from London Heathrow Airport, 78% arrive as scheduled at their destination.

London Gatwick Airport (LGW)

You can book a direct flight from London to Ottawa departing London Gatwick Airport (LGW). Nonstop services from LGW will take you to Ottawa International Airport (YOW).
Book your direct London to Ottawa plane ticket with Air Transat. This is one of the leading airlines that operates this route out of LGW.
Visit family or friends or just take a moment to recharge with a stopover. If you'd like to split up your London to Ottawa flight, here's where you can stop when leaving from London Gatwick Airport:
- Toronto Pearson International Airport (YYZ)
- Montreal Pierre Elliott Trudeau Airport (YUL)
- Quebec Airport (YQB)
LGW is around 40 kilometres from central London. It takes 1 hour 5 minutes or so to get to the airport if you're driving from the city centre. Public transport takes roughly 45 minutes.
Want to treat yourself to an extra night away before your flight from London to Ottawa? Unwind in a hotel near London Gatwick Airport before your adventure officially starts. Here's where you can stay:
The majority of flights that leave London Gatwick Airport reach their destination as expected. It boasts a strong on-time performance rate of 83%.

London Stansted Airport (STN)

The journey time to STN from the centre of London is around 45 minutes on public transport. If you're going by car, it'll take you about 1 hour 5 minutes to cover the 48 kilometres or so.
Rest a little longer, move a little slower, and still make your London to Ottawa flight with time to spare. These hotels near London Stansted Airport make getting to the terminal a breeze if you're jetting off early:
STN has a reliable on-time arrivals rating of 80%, so you can rely on your flight to stay on course and touch down when it should.

Arriving in Ottawa

Ottawa International Airport (YOW)

Ottawa International Airport (YOW) is approximately 11 kilometres from central Ottawa. If you're catching a taxi or a ride-share, the drive will take around 20 minutes.
It typically takes 35 minutes to get there when travelling by public transport.
Reserve a hotel near YOW if you're coming in on a late flight from London to Ottawa. Select one of these accommodation options and skip the long transfer:
Follow your own route with a Ottawa International Airport rental car. Pick up your wheels from Routes Car Rentals, Alamo or Budget and experience more of Ottawa and beyond.
Booking your vehicle from Ottawa International Airport about two weeks ahead gives you the best shot at securing a great deal.
You'll find YOW at 50 Airport Road.

Ottawa Gatineau Airport (YND)

Central Ottawa is roughly 14 kilometres from Ottawa Gatineau Airport (YND). Make your way off your flight from London to Ottawa and then keep a lookout for any airport signs directing you to the centre.
After your flight from London to Ottawa, tuck yourself in at a hotel near YND. These are some great options that'll help you get into relaxation mode:
In general, the earlier you book, the bigger the savings and variety of vehicles. Lock in your ride from YND as soon as you know your dates.

Best time to go to Ottawa

July is the busiest month for flights from London to Ottawa. To travel when it's less crowded, go to Ottawa in November.
Book a London to Ottawa ticket departing in July if you're eager to experience the city during its warmest month. Expect temperatures in Ottawa to range from 14ºC (57ºF) to 28ºC (82ºF).
If you want to travel in cooler conditions, look for a cheap flight from London to Ottawa in January when temperatures average between -19ºC (-2ºF) and -2ºC (28ºF).

More about Ottawa

Start your Ottawa trip off on the right foot by choosing the perfect place to stay. Once you've booked your flight from London to Ottawa, browse our selection of accommodation options including:
All great holidays should include a little sightseeing. Rideau Canal National Historic Site, Parliament Hill and Rideau Canal, Locks 1 - 8 - Ottawa are attractions you won't want to skip in Ottawa.

Explore more of Canada

Ottawa has plenty to offer, but there are so many other corners of Canada you should also see. About 354 kilometres southwest of Ottawa, a trip to Toronto will keep your itinerary busy. Don't miss top attractions like CN Tower, Royal Ontario Museum and Toronto Islands.
Montreal is another sought-after destination in Canada and is around 161 kilometres east of Ottawa. No trip is complete without a visit to Notre-Dame Basilica of Montreal, Montreal International Jazz Festival and Cirque du Soleil.