AirHint found the following cheapest return flights from Montreal (YUL) to Porto (OPO) in March 2026 (see full year).

Return flights

07 Mar - 14 Mar	Brussels Airlines
18 Mar - 25 Mar	Brussels Airlines
16 Mar - 23 Mar	Azores Airlines
09 Mar - 16 Mar	Azores Airlines
14 Mar - 21 Mar	Azores Airlines
30 Mar - 06 Apr	Azores Airlines
02 Mar - 09 Mar	Azores Airlines
27 Mar - 03 Apr	TAP
29 Mar - 05 Apr	TAP
03 Mar - 10 Mar	KLM
15 Mar - 22 Mar	KLM
17 Mar - 24 Mar	KLM
04 Mar - 11 Mar	Delta
25 Mar - 01 Apr	TAP
26 Mar - 02 Apr	Air France
28 Mar - 04 Apr	Azores Airlines
31 Mar - 07 Apr	Lufthansa
26 Mar - 09 Apr	Air Transat

Also check the deals for one-way flights from Montreal to Porto in March.

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 Porto in March from $385

Return flights