Cheapest return flights from Boston to Porto in May from $352

AirHint found the following cheapest return flights from Boston (BOS) to Porto (OPO) in May 2026 (see full year).

Return flights

10 May - 17 May TAP
03 May - 09 May TAP
01 May - 05 May Lufthansa
06 May - 13 May SWISS
06 May - 20 May SWISS
09 May - 23 May Lufthansa
06 May - 18 May TAP
02 May - 06 May Lufthansa
30 May - 08 Jun TAP
29 May - 07 Jun TAP
02 May - 06 May TAP direct

Also check the deals for one-way flights from Boston 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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