AirHint found the following cheapest return flights from Montreal (YUL) to Sofia (SOF) in June 2026 (see full year).

Return flights

04 Jun - 11 Jun	Air Transat
18 Jun - 25 Jun	Air Transat
07 Jun - 14 Jun	British Airways
14 Jun - 21 Jun	British Airways
21 Jun - 28 Jun	British Airways
03 Jun - 10 Jun	Finnair
30 Jun - 07 Jul	FrenchBee
10 Jun - 17 Jun	Air Canada
11 Jun - 18 Jun	Air Transat
01 Jun - 08 Jun	Air Canada
02 Jun - 09 Jun	Air Canada
24 Jun - 01 Jul	Air Transat
29 Jun - 06 Jul	SWISS
26 Jun - 03 Jul	Air Transat
27 Jun - 04 Jul	Air Transat
25 Jun - 02 Jul	Air Transat

Also check the deals for one-way flights from Montreal to Sofia in June.

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 Sofia in June from $823

Return flights