Cheap flights from London to Montreal from $789 LCY, LGW, LHR, LTN, STN → YUL
London City Airport (LCY), London Gatwick Airport (LGW), London Heathrow Airport (LHR), London Luton Airport (LTN), Stansted Airport (STN) → Montreal-Pierre Elliott Trudeau International Airport (YUL)
The cheapest return found recently is $789 with TAP Air Portugal, 9 Jun 2027 – 14 Jun 2027, found today.
- Cheapest return found recently
- $789, 9 Jun 2027 to 14 Jun 2027
- Usual return price
- $828 to $1,383
- Cheapest month to fly
- June 2027, return fares from $789 found in the last 7 days
Return
The cheapest return fare on each of 3 departure dates is usually $828 to $1,383.
Cheapest return found recently
$789
9 Jun 2027 – 14 Jun 2027 · TAP Air Portugal
London Heathrow Airport (LHR) → Montreal-Pierre Elliott Trudeau International Airport (YUL)
Leaves 8:00 a.m. · Return leaves 10:45 p.m. · 33 h 15 min of travel, both ways together
out 1 stop, back 1 stop
found today
Cheapest nonstop return
$867
10 Jun 2027 – 15 Jun 2027 · Air Transat
London Gatwick Airport (LGW) → Montreal-Pierre Elliott Trudeau International Airport (YUL)
Leaves 11:35 a.m. · Return leaves 10:05 p.m. · 14 h 25 min of travel, both ways together
out nonstop, back nonstop
found today
Found recently, and the cheapest we hold
$789 9 Jun 2027 – 14 Jun 2027found todaySee prices for these dates
It is also the cheapest return we hold, of any age.
What have prices looked like?
Over 40 days, 27 Sept to 12 Nov, the cheapest return we saw each day was $491 to $924.
Those were the prices on those days, not today's.
Is this a good return price?
Compared with the cheapest return fare on each of 3 departure dates from 14 Nov to 10 Jun 2027, found by travelers' searches in the last 7 days (economy, the price the seller showed on Aviasales). The usual range is the middle half of those prices.
Could nearby dates be cheaper?
No. We hold 5-night return fares on 1 other departure date within 3 days of 9 Jun 2027, and it is not cheaper.
Every date we hold
11 fares on 3 departure dates
See the chart as a table
| Dates | From | Airline | Airports | Stops | Found | |
|---|---|---|---|---|---|---|
| 14 Nov – 20 Nov | $1,898 | Helvetic Airways | London City Airport (LCY) → Montreal-Pierre Elliott Trudeau International Airport (YUL) | out 1 stop, back 1 stop | found 2 days ago | See prices for these dates |
| 9 Jun 2027 – 14 Jun 2027 | $789 | TAP Air Portugal | London Heathrow Airport (LHR) → Montreal-Pierre Elliott Trudeau International Airport (YUL) | out 1 stop, back 1 stop | found today | See prices for these dates |
| 10 Jun 2027 – 15 Jun 2027 | $867 | Air Transat | London Gatwick Airport (LGW) → Montreal-Pierre Elliott Trudeau International Airport (YUL) | out nonstop, back nonstop | found today | See prices for these dates |
Which month looks cheapest?
June 2027 is the cheapest month — from $789.
Airlines on the cheapest dates: Helvetic Airways, TAP Air Portugal, Air Transat.
Premium cabin fares from London to Montreal
We hold no premium economy, business or first-class fares for this route: we collect them for the busiest routes, and this one is not among them yet.
Today's prices for 9 Jun 2027 – 14 Jun 2027 in another cabin: Premium economy · Business · First
How far ahead were prices cheapest for London to Montreal?
Return
The cheapest fares were 0 to 6 days before departure.
From the cheapest return each day between 27 Sept and 12 Nov (40 days), grouped by how many days ahead the flight left; one adult in economy.
Each range covers different departure dates, so this compares typical fares, not the same trip priced twice.
Prices reflect recent searches — current fares may differ.
See these ranges as a table
| Booked ahead by | Typical fare | Cheapest day | Above the cheapest | Days of prices |
|---|---|---|---|---|
| 0–6 days | $582 | $570 | Cheapest seen | 8 |
| 7–13 days | $808 | $570 | +39% | 13 |
| 30–59 days | $833 | $759 | +43% | 11 |
| 60–89 days | $755 | $755 | +30% | 10 |
| 90–179 days | $659 | $592 | +13% | 16 |
| 180+ days | $612 | $491 | +5% | 20 |
Live price for these dates
The cheapest return found recently is for 9 Jun 2027 – 14 Jun 2027. A live search on this page shows what those dates cost now, for one adult in economy.
Questions about this trip
How much is a return flight from London to Montreal?
The cheapest return found recently is $789 with TAP Air Portugal, 9 Jun 2027 to 14 Jun 2027, found today. The cheapest return fare on each of 3 departure dates is usually $828 to $1,383.
What is the cheapest month to fly from London to Montreal?
June 2027 is the cheapest month for a return, from $789, 9 Jun 2027 to 14 Jun 2027, found today.
How far ahead should I book a flight from London to Montreal?
In 40 days of prices between 27 Sept and 12 Nov, return fares were cheapest 0 to 6 days before departure.
Is there a direct flight from London to Montreal?
Yes, the cheapest nonstop return found recently is $867 with Air Transat, 10 Jun 2027 to 15 Jun 2027, found today.
Which airlines have the cheapest flights from London to Montreal?
Between 14 Nov and 10 Jun 2027, Helvetic Airways has the cheapest return on 1 of the 3 departure dates we hold, TAP Air Portugal on 1 and Air Transat on 1.
Prices are what travelers' searches on Aviasales found in the last 7 days, in US dollars: the price the seller showed on Aviasales; bags may cost extra. Fares change, so check today's price before you book. How our prices work