Cheapest return flights from Boston to Porto in March from $350

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

Return flights

30 Mar - 06 Apr TAP
10 Mar - 17 Mar SWISS
16 Mar - 23 Mar Lufthansa
17 Mar - 25 Mar Air Canada
22 Mar - 29 Mar Air Canada
01 Mar - 08 Mar United
02 Mar - 06 Mar TAP
22 Mar - 27 Mar Lufthansa
28 Mar - 06 Apr TAP
18 Mar - 12 Apr TAP
07 Mar - 18 Mar Iberia
15 Mar - 22 Mar TAP
14 Mar - 23 Mar British Airways

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

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