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

Return flights

28 Sep - 05 Oct	SWISS
22 Sep - 08 Oct	Air Transat
10 Sep - 17 Sep	FrenchBee
14 Sep - 21 Sep	FrenchBee
07 Sep - 14 Sep	FrenchBee
09 Sep - 16 Sep	Air Transat
17 Sep - 24 Sep	FrenchBee
03 Sep - 10 Sep	Air Transat
21 Sep - 28 Sep	FrenchBee
26 Sep - 03 Oct	FrenchBee
18 Sep - 25 Sep	Air Transat
04 Sep - 18 Sep	Air Transat
11 Sep - 18 Sep	Air Transat
30 Sep - 07 Oct	Air France
29 Sep - 06 Oct	Air France
18 Sep - 02 Oct	Air France
25 Sep - 02 Oct	KLM
27 Sep - 04 Oct	KLM
24 Sep - 01 Oct	FrenchBee
29 Sep - 12 Oct	FrenchBee

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 $463

Return flights