Cheapest return flights from Montreal to Sofia in September from $698

Best time to book flights for Montreal (YUL) to Sofia (SOF) flights at AirHint

AirHint found the following cheapest return flights from Montreal (YUL) to Sofia (SOF) in September 2025 (see full year).

Return flights

19 Sep - 24 Sep FrenchBee
15 Sep - 22 Sep FrenchBee
10 Sep - 17 Sep FrenchBee
14 Sep - 21 Sep FrenchBee
19 Sep - 22 Sep FrenchBee
01 Sep - 08 Sep FrenchBee
03 Sep - 10 Sep FrenchBee
22 Sep - 29 Sep FrenchBee
19 Sep - 26 Sep FrenchBee
08 Sep - 15 Sep Air Transat
24 Sep - 01 Oct FrenchBee
26 Sep - 03 Oct FrenchBee
29 Sep - 06 Oct Air Transat
30 Sep - 07 Oct Air Canada
28 Sep - 05 Oct Air Canada
25 Sep - 02 Oct Condor
27 Sep - 04 Oct Lufthansa

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

Skyscanner

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