Lowest fares from Ottawa to London
Ottawa to London at a glance
- Nonstop flights
- Air Canada to Heathrow, plus seasonal Air Transat flights to Gatwick
- Flying time
- About 6h 35m nonstop
- Distance
- 5,361 km
- Leaving from
- Ottawa Macdonald–Cartier (YOW)
- Arriving at
- Heathrow (LHR), Gatwick (LGW), Stansted (STN), Luton (LTN) and London City (LCY)
- Time difference
- London is about 5 hours ahead of Ottawa (this can shift by an hour when clocks change).
- Cheapest time
- January to March and November (outside the holidays) are usually cheapest; summer and Christmas cost the most.
- Entry for Canadians
- Canadians need a UK Electronic Travel Authorisation (ETA), applied for online or in the UK ETA app, before travelling. Rules change, so confirm on the Government of Canada's travel advice page before you book.
Nonstop airlines are based on each airport's published routes (September 2026). Schedules change, so always check your dates.
Cheapest month to fly Ottawa to London
Lowest one-way fare in Canadian dollars (CAD) found in recent searches for each month. Round trips usually cost a bit less than two one-way tickets. Tap a month to search it.
Ottawa to London fares in our daily checks
We check the cheapest one-way fare from Ottawa to London every morning. We have 21 days of results so far, from Oct 15, 2026 to Nov 10, 2026. In Canadian dollars:
- Lowest fare we saw
- $460 one way, on Oct 27, 2026 (for travel in December 2026)
- Typical daily low
- $460 to $594: the middle half of each day's cheapest fare
- Latest check
- $701 on Nov 10, 2026
- Cheapest travel month so far
- December 2026 (median $587 over 19 days); priciest: November 2026 (median $627)
- Airlines selling these fares
- WestJet, Porter Airlines Canada, Air Canada
- Stops on the cheapest fare
- Usually 1 stop (12 of 21 days)
From Viorvo's own daily price checks (Travelpayouts fare data). These are the lowest one-way fares found in searches that day, not a quote, and they can be gone by the time you search. How we work these out.
How these figures are worked out, and what they are not: our data and method.
How to fly Ottawa to London for less
- Compare nonstop with one-stop. Nonstop on this route: Air Canada to Heathrow, plus seasonal Air Transat flights to Gatwick. One-stop fares are sometimes cheaper, but check how much time they add before you choose.
- Be flexible by a few days. Use the month chart and the Viorvo price calendar to see which days are cheapest; midweek departures are often lower.
- Compare airports on both ends. Montréal–Trudeau (YUL) is about two hours' drive away and is often much cheaper for international trips.
- Getting to the airport in Ottawa: OC Transpo buses connect the airport to the O-Train and downtown.
- Arriving in London: From Heathrow, the Tube's Piccadilly line or the Elizabeth line cost far less than the Heathrow Express. Canadians need a UK Electronic Travel Authorisation (ETA) before flying.
- Check what's included. The cheapest fares often exclude checked bags and seat selection, so compare the total price for your trip.
All flights from Canada to Europe →
Free tools: Will my bag fit? Carry-on size checker · Flight delayed? See what you're owed
Power in United Kingdom: Type G, 230 V; you'll need an adapter. Which adapter to pack · What to pack for London
Pack for this trip: Type G adapter (Amazon.ca affiliate links)
Everything else for London
Our guides: Where to stay in London · eSIM for the United Kingdom · Renting a car in the United Kingdom · Things to do in London · London travel hub · Travel insurance for Canadians
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Ottawa to London flights: common questions
How much is a flight from Ottawa to London?
In recent searches, one-way fares from Ottawa to London started at $701. Fares change daily, so check the fares board above for the latest prices and dates.
Is there a direct flight from Ottawa to London?
Yes. Nonstop flights between Ottawa and London: Air Canada to Heathrow, plus seasonal Air Transat flights to Gatwick. Seasonal flights only run part of the year, so check the dates you want. Schedules change, so the fares board above shows what's available for your dates.
How long is the flight from Ottawa to London?
A nonstop flight covers about 5,361 km and takes roughly 6h 35m. With one connection, the whole trip usually takes about 9 to 14 hours depending on the layover.
Which airlines fly from Ottawa to London?
Nonstop: Air Canada to Heathrow, plus seasonal Air Transat flights to Gatwick. Many other airlines sell connecting trips, and the fares board above compares them all, cheapest first.
When is the cheapest time to fly from Ottawa to London?
January to March and November (outside the holidays) are usually cheapest; summer and Christmas cost the most. The month chart above shows the cheapest months in recent searches.
Which airports serve London?
London is served by Heathrow (LHR), Gatwick (LGW), Stansted (STN), Luton (LTN) and London City (LCY). Comparing every airport is one of the easiest ways to find a cheaper fare.
What do Canadians need to travel to London?
Canadians need a UK Electronic Travel Authorisation (ETA), applied for online or in the UK ETA app, before travelling. Rules change, so confirm on the Government of Canada's travel advice page before you book.
What's the time difference between Ottawa and London?
London is about 5 hours ahead of Ottawa (this can shift by an hour when clocks change).
How much have Ottawa to London fares varied in your price checks?
In 21 days of daily checks (from Oct 15, 2026 to Nov 10, 2026), the cheapest one-way fare on a typical day was between $460 and $594 and the lowest we saw was $460. December 2026 has been the cheapest travel month so far.
What's the cheapest month to fly from Ottawa to London?
See the month chart above for the cheapest month in recent searches. As a rule of thumb: January to March and November (outside the holidays) are usually cheapest; summer and Christmas cost the most.