Cheapest return flights from Boston to Porto in May from 528€

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

Return flights

01 May - 09 May Iberia
10 May - 18 May TAP
26 May - 02 Jun Iberia
06 May - 18 May TAP
02 May - 10 May TAP
19 May - 28 May British Airways
27 May - 03 Jun Air France
28 May - 04 Jun KLM
29 May - 05 Jun KLM
30 May - 05 Jun LEVEL
25 May - 01 Jun KLM
02 May - 10 May TAP direct
17 May - 22 May Air Transat
15 May - 23 May LEVEL
09 May - 16 May TAP direct
30 May - 06 Jun Iberia
31 May - 07 Jun KLM
31 May - 07 Jun TAP direct

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

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