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

Return flights

02 Sep - 09 Sep	Porter Airlines (Canada) Ltd
17 Sep - 24 Sep	Air Transat
11 Sep - 30 Sep	SWISS
23 Sep - 30 Sep	SWISS
30 Sep - 07 Oct	SWISS
24 Sep - 01 Oct	Air Canada
29 Sep - 06 Oct	Air Canada
04 Sep - 11 Sep	Porter Airlines (Canada) Ltd
21 Sep - 28 Sep	Air Transat
10 Sep - 17 Sep	FrenchBee
28 Sep - 05 Oct	Lufthansa
26 Sep - 03 Oct	Air Canada
03 Sep - 10 Sep	Air Transat
07 Sep - 14 Sep	Air Transat
11 Sep - 18 Sep	Air Transat
25 Sep - 02 Oct	Brussels Airlines
27 Sep - 04 Oct	Air France

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

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 Budapest in September from 555€

Return flights