Cheapest return flights from Basel to Montreal in September from $523

AirHint found the following cheapest return flights from Basel (BSL) to Montreal (YUL) in September 2025 (see full year).

Return flights

04 Sep - 19 Sep Air Transat direct
01 Sep - 17 Sep Air Transat direct
23 Sep - 30 Sep British Airways
04 Sep - 23 Sep KLM
26 Sep - 07 Oct British Airways
25 Sep - 06 Oct British Airways
25 Sep - 07 Oct British Airways
21 Sep - 30 Sep Lufthansa

Also check the deals for one-way flights from Basel to Montreal in September.

Skyscanner

The deals are updated regularly. The prices may go up as tickets are purchased by other travellers. Only the cheapest flights are offered. Select a price to book and secure these cheap prices.

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