AirHint found the following cheapest return flights from Porto (OPO) to Boston (BOS) in March 2026 (see full year).
Return flights
| 25 Mar - 29 Mar | TAP | ||
| 30 Mar - 05 Apr | TAP | ||
| 12 Mar - 17 Mar | TAP | ||
| 13 Mar - 17 Mar | KLM | ||
| 14 Mar - 17 Mar | United | ||
| 30 Mar - 04 Apr | Vueling Airlines |
Also check the deals for one-way flights from Porto to Boston in March.
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