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

Return flights

07 Jun - 14 Jun	British Airways
15 Jun - 22 Jun	FrenchBee
14 Jun - 21 Jun	British Airways
21 Jun - 28 Jun	British Airways
28 Jun - 05 Jul	British Airways
02 Jun - 09 Jun	SWISS
08 Jun - 15 Jun	SWISS
16 Jun - 23 Jun	SWISS
01 Jun - 08 Jun	SWISS
09 Jun - 16 Jun	SWISS
10 Jun - 17 Jun	Air Canada
24 Jun - 01 Jul	Air Canada
30 Jun - 07 Jul	SWISS
29 Jun - 06 Jul	SWISS
25 Jun - 02 Jul	Air Canada
26 Jun - 03 Jul	Air Canada
27 Jun - 04 Jul	Lufthansa

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 707€

Return flights