AirHint found the following cheapest return flights from Boston (BOS) to Porto (OPO) in October 2026 (see full year).
Return flights
| 19 Oct - 27 Oct | TAP | direct | |
| 27 Oct - 03 Nov | TAP | direct | |
| 28 Oct - 06 Nov | Turkish Airlines | ||
| 21 Oct - 25 Oct | TAP | direct | |
| 29 Oct - 05 Nov | TAP | ||
| 05 Oct - 10 Oct | Turkish Airlines | ||
| 05 Oct - 10 Oct | TAP | direct |
Also check the deals for one-way flights from Boston to Porto in October.
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