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
26 Apr - 03 May	British Airways
16 Apr - 23 Apr	Condor
18 Apr - 25 Apr	Condor
21 Apr - 28 Apr	Condor
23 Apr - 30 Apr	Condor
14 Apr - 21 Apr	British Airways
06 Apr - 13 Apr	FrenchBee
28 Apr - 05 May	Condor
30 Apr - 07 May	Condor
25 Apr - 02 May	Condor
24 Apr - 01 May	Condor
29 Apr - 06 May	Condor
09 Apr - 16 Apr	Condor
13 Apr - 20 Apr	FrenchBee
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 603€

Return flights