Lowest fares from Montreal to London
What to know before you book Montreal to London
Air Canada and British Airways fly nonstop from Montreal to London Heathrow, and Air Transat flies seasonally to Gatwick. The overnight flight takes about six and a half hours and lands in the morning. Canadians need a UK Electronic Travel Authorisation (ETA) before flying.
Heathrow or Gatwick?
Heathrow is closer to central London, with the Elizabeth line and the Heathrow Express. Gatwick is south of the city, about 30 minutes to Victoria on the Gatwick Express. A cheaper Gatwick fare is usually worth the slightly longer ride.
Get your UK ETA early
The UK ETA costs £20, is valid for two years and is applied for online or in the UK ETA app. Most are approved quickly, but apply a few days before you fly.
Sleep on the way over
Flights leave Montreal in the evening and land in London the next morning, five hours ahead. Try to sleep on the plane and stay up until the evening to beat jet lag.
London as a gateway
Fares from Montreal to London are often among the lowest to Europe. Trains from St Pancras reach Paris and Brussels in about two hours, so London can be a cheap way into the continent.
Written by the Viorvo team · Updated October 2026. Airline schedules and entry rules change, so check before you book.
Montreal to London at a glance
- Nonstop flights
- Air Canada and British Airways to Heathrow, plus seasonal Air Transat flights to Gatwick
- Flying time
- About 6h 25m nonstop
- Distance
- 5,221 km
- Leaving from
- Montréal–Trudeau (YUL)
- Arriving at
- Heathrow (LHR), Gatwick (LGW), Stansted (STN), Luton (LTN) and London City (LCY)
- Time difference
- London is about 5 hours ahead of Montreal (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 Montreal 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.
Montreal to London fares in our daily checks
We check the cheapest one-way fare from Montreal to London every morning. We have 27 days of results so far, from Oct 15, 2026 to Nov 10, 2026. In Canadian dollars:
- Lowest fare we saw
- $377 one way, on Nov 9, 2026 (for travel in December 2026)
- Typical daily low
- $399 to $426: the middle half of each day's cheapest fare
- Latest check
- $377 on Nov 10, 2026
- Cheapest travel month so far
- December 2026 (median $383 over 4 days); priciest: June 2027 (median $576)
- Airlines selling these fares
- TAP Air Portugal, Air Transat, WestJet, Air Canada
- Stops on the cheapest fare
- Usually 1 stop (25 of 27 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 Montreal to London for less
- Compare nonstop with one-stop. Nonstop on this route: Air Canada and British Airways 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. Ottawa (YOW), about two hours' drive away, is occasionally cheaper, so compare it on bigger trips.
- Getting to the airport in Montreal: The 747 bus runs 24/7 between the airport and downtown and costs a fraction of a taxi.
- 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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Montreal to London flights: common questions
How much is a flight from Montreal to London?
In recent searches, one-way fares from Montreal to London started at $377. Fares change daily, so check the fares board above for the latest prices and dates.
Is there a direct flight from Montreal to London?
Yes. Nonstop flights between Montreal and London: Air Canada and British Airways 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 Montreal to London?
A nonstop flight covers about 5,221 km and takes roughly 6h 25m. With one connection, the whole trip usually takes about 9 to 13 hours depending on the layover.
Which airlines fly nonstop from Montreal to London?
Air Canada and British Airways fly to Heathrow, and Air Transat flies seasonally to Gatwick.
When is the cheapest time to fly from Montreal 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.
Do Canadians need anything to fly to London?
Yes. Canadians need a UK Electronic Travel Authorisation (ETA), applied for online or in the UK ETA app, before travelling.
What's the time difference between Montreal and London?
London is about 5 hours ahead of Montreal (this can shift by an hour when clocks change).
How much have Montreal to London fares varied in your price checks?
In 27 days of daily checks (from Oct 15, 2026 to Nov 10, 2026), the cheapest one-way fare on a typical day was between $399 and $426 and the lowest we saw was $377. December 2026 has been the cheapest travel month so far.
What's the cheapest month to fly from Montreal 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.