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

Return flights

12 Apr - 19 Apr	British Airways
19 Apr - 26 Apr	British Airways
26 Apr - 03 May	British Airways
05 Apr - 12 Apr	British Airways
08 Apr - 15 Apr	British Airways
22 Apr - 29 Apr	British Airways
01 Apr - 08 Apr	British Airways
15 Apr - 22 Apr	British Airways
21 Apr - 28 Apr	British Airways
29 Apr - 06 May	British Airways
16 Apr - 23 Apr	Condor
18 Apr - 25 Apr	Condor
24 Apr - 01 May	Condor
28 Apr - 05 May	Condor
30 Apr - 07 May	Condor
25 Apr - 02 May	Condor
27 Apr - 04 May	SWISS

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.

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Cheapest return flights from Montreal to Sofia in April from $703

Return flights