Cheap flights from Montreal to London from C$529 YHU, YUL → LGW, LHR

Found recently, and the cheapest we hold

It is also the cheapest return we hold, of any age.

What have prices looked like?

Over 49 days, 24 Sept to 11 Nov, the cheapest return we saw each day was C$646 (US$453) to C$1,029 (US$722).

Those were the prices on those days, not today's.

Could nearby dates be cheaper?

We hold no other 9-night return fares leaving within 3 days of 13 Feb 2027 to compare.

Every date we hold

11 fares on 5 departure dates

Which month looks cheapest?

February 2027 is the cheapest month — from C$947 (US$664).

Found recently, and the cheapest we hold

It is also the cheapest one-way we hold, of any age.

What have prices looked like?

Over 45 days, 27 Sept to 11 Nov, the cheapest one-way we saw each day was C$385 (US$270) to C$797 (US$559).

Those were the prices on those days, not today's.

Could nearby dates be cheaper?

We hold no other one-way fares leaving within 3 days of 6 Dec to compare.

Every date we hold

1 fares on 1 departure dates

Return

Fares 14 to 29 days before departure were typically 23% lower than 0 to 6 days before departure.

From the cheapest return each day between 24 Sept and 11 Nov (49 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.

One-way

Fares 60 to 89 days before departure were typically 17% lower than 14 to 29 days before departure.

From the cheapest one-way each day between 27 Sept and 11 Nov (45 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.

How much is a return flight from Montreal to London?

The cheapest return found recently is C$947 (US$664) with Air Transat, 13 Feb 2027 to 22 Feb 2027, found 2 days ago. The cheapest return fare on each of 5 departure dates is usually C$971 (US$681) to C$1,029 (US$722).

How much is a one-way flight from Montreal to London?

The cheapest one-way found recently is C$529 (US$371) with Porter Airlines Canada, 6 Dec, found 3 days ago.

What is the cheapest month to fly from Montreal to London?

February 2027 is the cheapest month for a return, from C$947 (US$664), 13 Feb 2027 to 22 Feb 2027, found 2 days ago.

How far ahead should I book a flight from Montreal to London?

In 49 days of prices between 24 Sept and 11 Nov, return fares 14 to 29 days before departure were typically 23% lower than 0 to 6 days before departure. In 45 days of prices between 27 Sept and 11 Nov, one-way fares 60 to 89 days before departure were typically 17% lower than 14 to 29 days before departure.

Is there a direct flight from Montreal to London?

Yes, the cheapest nonstop return found recently is C$1,209 (US$848) with Air Transat, 12 Aug 2027 to 17 Aug 2027, found 4 days ago.

How long is the flight from Montreal to London?

The cheapest one-way found recently, with Porter Airlines Canada on 6 Dec, takes 23 h 15 min with 1 stop.

Which airlines have the cheapest flights from Montreal to London?

Between 8 Feb 2027 and 12 Aug 2027, Porter Airlines Canada has the cheapest return on 2 of the 5 departure dates we hold, Air France on 1 and Air Transat on 1.