C$657 Cheap Flights from Ottawa (YOWA) to London (LOND)

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Flight deals from Ottawa to London

Looking for a cheap last-minute deal or the best return flight from Ottawa to London? If you want to travel next month, return fares start from C$669. Find the lowest prices on one-way and return tickets right here.

London.C$348 per passenger.Departing Wed., Jun. 3.One-way flight with WestJet.Outbound indirect flight with WestJet, departs from Ottawa International on Wed., Jun. 3, arriving in London Stansted.Price includes taxes and charges.From C$348, select.

London.C$352 per passenger.Departing Sun., May 31.One-way flight with WestJet.Outbound indirect flight with WestJet, departs from Ottawa International on Sun., May 31, arriving in London Stansted.Price includes taxes and charges.From C$352, select.

London.C$368 per passenger.Departing Sun., Jul. 12.One-way flight with WestJet.Outbound indirect flight with WestJet, departs from Ottawa International on Sun., Jul. 12, arriving in London Luton.Price includes taxes and charges.From C$368, select.

London.C$388 per passenger.Departing Tue., Aug. 4.One-way flight with WestJet.Outbound indirect flight with WestJet, departs from Ottawa International on Tue., Aug. 4, arriving in London Stansted.Price includes taxes and charges.From C$388, select.

London.C$391 per passenger.Departing Tue., Sep. 15.One-way flight with WestJet.Outbound indirect flight with WestJet, departs from Ottawa International on Tue., Sep. 15, arriving in London Stansted.Price includes taxes and charges.From C$391, select.

London.C$456 per passenger.Departing Sun., Jul. 19.One-way flight with Air Transat.Outbound direct flight with Air Transat departs from Ottawa International on Sun., Jul. 19, arriving in London Gatwick.Price includes taxes and charges.From C$456, select.

London.C$456 per passenger.Departing Tue., Jun. 2.One-way flight with Air Transat.Outbound direct flight with Air Transat departs from Ottawa International on Tue., Jun. 2, arriving in London Gatwick.Price includes taxes and charges.From C$456, select.

London.C$461 per passenger.Departing Sun., May 31.One-way flight with Air Transat.Outbound direct flight with Air Transat departs from Ottawa International on Sun., May 31, arriving in London Gatwick.Price includes taxes and charges.From C$461, select.

London.C$498 per passenger.Departing Tue., Oct. 13.One-way flight with WestJet.Outbound indirect flight with WestJet, departs from Ottawa International on Tue., Oct. 13, arriving in London Luton.Price includes taxes and charges.From C$498, select.

London.C$604 per passenger.Departing Tue., Sep. 8.One-way flight with Air Transat.Outbound direct flight with Air Transat departs from Ottawa International on Tue., Sep. 8, arriving in London Gatwick.Price includes taxes and charges.From C$604, select.

London.C$619 per passenger.Departing Fri., Nov. 6.One-way flight with Porter Airlines.Outbound indirect flight with Porter Airlines, departs from Ottawa International on Fri., Nov. 6, arriving in London Gatwick.Price includes taxes and charges.From C$619, select.

London.C$654 per passenger.Departing Tue., Jan. 5.One-way flight with Porter Airlines.Outbound indirect flight with Porter Airlines, departs from Ottawa International on Tue., Jan. 5, arriving in London Gatwick.Price includes taxes and charges.From C$654, select.

London.C$655 per passenger.Departing Fri., Oct. 2.One-way flight with Air Transat.Outbound direct flight with Air Transat departs from Ottawa International on Fri., Oct. 2, arriving in London Gatwick.Price includes taxes and charges.From C$655, select.

London.C$658 per passenger.Departing Tue., Aug. 18.One-way flight with Air Transat.Outbound direct flight with Air Transat departs from Ottawa International on Tue., Aug. 18, arriving in London Gatwick.Price includes taxes and charges.From C$658, select.

London.C$681 per passenger.Departing Mon., Dec. 14.One-way flight with Porter Airlines.Outbound indirect flight with Porter Airlines, departs from Ottawa International on Mon., Dec. 14, arriving in London Gatwick.Price includes taxes and charges.From C$681, select.

London.C$696 per passenger.Departing Mon., Mar. 1.One-way flight with Porter Airlines.Outbound indirect flight with Porter Airlines, departs from Ottawa International on Mon., Mar. 1, arriving in London Gatwick.Price includes taxes and charges.From C$696, select.

Find the cheapest month to fly from Ottawa to London from C$348 one-way

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

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Which airlines fly from Ottawa to London?

Alternative Ottawa to London routes

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

Ottawa to London: Flight information

The things to know before you go.

Cheapest flight found	C$348
Cheapest month to fly	June
Average flight time	6 hrs, 57 mins
Most popular airline	TAP Air Portugal
Average flights per week	51

Finding cheap flights from Ottawa to London: Frequently asked questions

How many airports are there in London?

There are 6 airports in London: London City, London Heathrow, London Gatwick, London Luton, London Stansted, and London Southend.

How much are return flights from Ottawa to London?

The best price we found for a return flight from Ottawa to London is C$657. 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 Ottawa to London?

6 hours and 57 minutes is the average flight time from Ottawa to London.

Which airlines fly direct from Ottawa to London?

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

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

As of May 2026, there are 204 flights per week flying from Ottawa to London.

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

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

Which is the cheapest airport to fly into in London?

If you're flying from Ottawa, the cheapest airport near London is London Luton – which is 44.6 km away from the centre of London. We've found flights into this airport from C$657.

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

After crunching the numbers on our flight calendar, we found that it is currently cheapest to fly from Ottawa to London on Sunday, May 31, 2026.

Can I get a direct flight from Ottawa to London?

Yes – the average flight time is 6 hours and 57 minutes.

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

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 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 London?

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.

What’s the weather like in London?

In May, the average temperature is usually around 12°C. August is typically the warmest month in London, when it usually averages around 22°C. You can expect the least rain in March. The coldest month is January, with temperatures averaging 1°C. The rainiest month is October.

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

The cheapest airline that flies to London is WestJet. And the cheapest airline that flies to London Heathrow Airport is Air Transat.

Travelling from Ottawa to London: what you need to know

Ottawa's main base, Ottawa/Macdonald-Cartier International Airport (YOW), is where many great vacations begin. Explore your departure choices from here for your flight from Ottawa to London.
London has a number of airports you can jet into. Make your landing at London Heathrow Airport (LHR), London Gatwick Airport (LGW) or Stansted Airport (STN). Or arrive at London Luton Airport (LTN) or London City Airport (LCY).
To ensure you get on your flight from Ottawa to London, allow plenty of time for things like baggage drop and finding your gate. Arriving two hours ahead of international departures and one hour before domestic flights is the standard rule.
During popular months like August, you'll want to get to the airport well in advance. Plan to arrive two hours before domestic departures and four hours ahead for international flights whenever you're flying during high season in general.
If you have a passport from Canada and want to travel to United Kingdom for tourism purposes, you won't need a visa. However, entry and visa requirements may vary based on the duration of your stay and are subject to change. For the most up-to-date information, check with your destination's nearest embassy or consulate before reserving a cheap flight from Ottawa to London.

Flying from Ottawa

Ottawa/Macdonald-Cartier International Airport (YOW)

Located around 13 kilometres from the centre of Ottawa, YOW can be reached in approximately 19 minutes by car (depending on traffic). The same journey on public transport will take roughly 43 minutes.
In search of a convenient hotel close to Ottawa/Macdonald-Cartier International Airport? If you're catching an early flight from Ottawa to London, these accommodation options will have you moments from your departure gate:

Arriving in London

London Heathrow Airport (LHR)

London Heathrow Airport (LHR) to central London is approximately 31 kilometres. It takes around 57 minutes to get to the centre driving.
It typically takes 1 hour and 1 minute to get there using public transport.
Consider staying in a hotel near LHR if you have a late flight from Ottawa to London. Select one of these accommodation options and avoid the hassle of a long transfer:

London Gatwick Airport (LGW)

After your flight from Ottawa to London has landed, you can get to the city centre in around 1 hour and 19 minutes by car. Central London is roughly 80 kilometres from London Gatwick Airport (LGW).
The trip will take about 1 hour and 26 minutes on public transport.
Hang the 'Do not disturb' sign on your door and rest at a hotel near LGW. Here are a few options where you can kick back after your flight from Ottawa to London:

How to find the cheapest flights from Ottawa to London

C$348 is the best price for a one-way ticket from Ottawa to London. Return flights start from C$657. These prices may change depending on demand.
Don't leave things to the last moment. You're more likely to find cheap flights from Ottawa to London if you book in advance. Airlines often have some amazing early bird deals.
If you can be flexible with your travel plans, use the 'Whole month' tool. It'll show you the lowest price in every month when searching for a ticket from Ottawa to London.
Set up a Price Alert for cheap flights from Ottawa to London. There's no need to check back in every day to see whether prices have dropped. We'll let you know as soon as there's a change in price.
Tailor your travel plans using filters. Select your arrival and departure times, airlines and total journey duration. You can also sort results by 'Best,' 'Fastest' or 'Cheapest' flights from Ottawa to London.

Best time to go to London

February is the quietest month for flights from Ottawa to London, while July is the most popular. Pick the ideal time to go to London based on whether you prefer a laid-back vibe or a more bustling atmosphere.
When booking your flight from Ottawa to London, think about the type of weather you like. July is the warmest month in London, with the temperature ranging from 11ºC to 26ºC.
Search for cheap flights from Ottawa to London in January if you want to travel in cooler conditions. Temperatures are at their lowest around then, ranging between 0ºC and 9ºC on average.

More about London

Start your London trip off on the right foot by choosing the perfect place to stay. As soon as you've booked your flight from Ottawa to London, check out our range of accommodation options including:
Big Ben and The British Museum are just a couple of the popular attractions to add to your London itinerary. Keep the momentum going by heading to Buckingham Palace.

Complete your London trip with a car rental

We use the same magic that helped you find your cheap flight from Ottawa to London to track down awesome deals on car rentals. Search for your ride in seconds and compare offers in one place. Plus you'll find all the info you need to drive in London, from the most popular car rental to the best time to book.