AirHint found the following cheapest return flights from Montreal (YUL) to Basel (BSL) in August 2026 (see full year).

Return flights

31 Aug - 07 Sep	Air Transat
25 Aug - 01 Sep	Air Transat
26 Aug - 02 Sep	Air Transat
30 Aug - 06 Sep	Air Transat
28 Aug - 04 Sep	Air Transat
18 Aug - 25 Aug	Air Transat
24 Aug - 31 Aug	Air Transat
19 Aug - 26 Aug	Air Transat
29 Aug - 05 Sep	Air Transat
23 Aug - 30 Aug	Air Transat
27 Aug - 03 Sep	Air Transat
17 Aug - 24 Aug	Air Transat
12 Aug - 19 Aug	Air Transat
21 Aug - 28 Aug	Air Transat
02 Aug - 22 Aug	Air Transat	direct
11 Aug - 18 Aug	Air Transat
16 Aug - 23 Aug	Air Transat

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

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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Cheapest return flights from Montreal to Basel in August from 661€

Return flights