Cheapest return flights from Montreal to Porto in May from $576

Best time to book flights for Montreal (YUL) to Porto (OPO) flights at AirHint

AirHint found the following cheapest return flights from Montreal (YUL) to Porto (OPO) in May 2025 (see full year).

Return flights

24 May - 01 Jun Azores Airlines
28 May - 04 Jun Air Transat
30 May - 06 Jun Air Transat
27 May - 03 Jun Air Transat
01 May - 21 May Azores Airlines
30 May - 05 Jun Air Transat
21 May - 28 May Air Transat
25 May - 01 Jun Air Transat
19 May - 26 May Air Transat
24 May - 08 Jun Azores Airlines
31 May - 06 Jun WestJet
31 May - 06 Jun Air Transat direct
24 May - 08 Jun Air Transat direct
08 May - 15 May Air Transat
18 May - 25 May Air Transat
03 May - 10 May Azores Airlines
11 May - 18 May Air Transat
07 May - 14 May SWISS
12 May - 19 May SWISS
14 May - 21 May SWISS

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

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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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