Montreal-Trudeau International (YUL) to Heathrow (LHR).
| Departure | Return | Price |
|---|---|---|
| 05/23/2026 | 05/29/2026 | $550 |
| 05/23/2026 | 05/30/2026 | $550 |
| 05/23/2026 | 06/01/2026 | $550 |
| 05/29/2026 | 06/05/2026 | $550 |
| 05/29/2026 | 06/06/2026 | $550 |
| 05/28/2026 | 06/05/2026 | $550 |
| 05/31/2026 | 06/05/2026 | $550 |
| 05/28/2026 | 06/03/2026 | $550 |
| 05/28/2026 | 06/06/2026 | $550 |
| 05/29/2026 | 06/03/2026 | $550 |
Based on current fares, May is the cheapest month to fly from Montreal to London, with average fares around $574 round trip (as low as $550).
July tends to be more expensive, averaging $740.
See the full month-by-month and day-of-week price analysis
Best Time to Fly YUL → LHRDeparture date prices (economy, round trip). Green = cheap, red = expensive.
The cheapest month to fly from Montreal to London is May, with average round-trip fares around $574. Fares in May start as low as $550. The most expensive month is July, averaging $740.
A nonstop flight from Montreal to London takes approximately 6h 30m.
The cheapest flight from Montreal to London currently starts at $550 round trip in economy class.
The average round-trip flight price from Montreal to London is $696 in economy class.
The distance is 3246 miles (5223 km). with a nonstop flight time of about 6h 30m. The lowest fare currently available is $550 departing in May. The average round-trip fare is $696.
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