AirHint found the following cheapest return flights from Boston (BOS) to Porto (OPO) in March 2026 (see full year).
Return flights
| 30 Mar - 05 Apr | TAP | ||
| 17 Mar - 25 Mar | SWISS | ||
| 04 Mar - 09 Mar | Iberia | ||
| 01 Mar - 29 Mar | SWISS | ||
| 05 Mar - 09 Mar | Iberia | ||
| 06 Mar - 10 Mar | Iberia | ||
| 25 Mar - 03 Apr | SWISS | ||
| 28 Mar - 03 Apr | SWISS |
Also check the deals for one-way flights from Boston to Porto in March.
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