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

Return flights

05 Apr - 12 Apr	British Airways
19 Apr - 26 Apr	British Airways
12 Apr - 19 Apr	British Airways
26 Apr - 03 May	British Airways
21 Apr - 28 Apr	SWISS
14 Apr - 21 Apr	SWISS
07 Apr - 14 Apr	Air Canada
08 Apr - 15 Apr	Air Canada
09 Apr - 16 Apr	Lufthansa
06 Apr - 13 Apr	Lufthansa
20 Apr - 27 Apr	Lufthansa
27 Apr - 04 May	SWISS
28 Apr - 05 May	Lufthansa
30 Apr - 07 May	Lufthansa
29 Apr - 06 May	Air Canada
25 Apr - 02 May	Air Canada
24 Apr - 01 May	Air Canada

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

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.

Book a cheap hotel in Sofia

Cheap car rent in Sofia

Cheapest return flights from Montreal to Sofia in April from 502€

Return flights