AirHint found the following cheapest return flights from Porto (OPO) to Boston (BOS) in October 2025 (see full year).

Return flights

06 Oct - 22 Oct	TAP	direct
06 Oct - 15 Oct	TAP	direct
20 Oct - 25 Oct	TAP	direct
08 Oct - 15 Oct	TAP	direct
16 Oct - 22 Oct	TAP
19 Oct - 25 Oct	TAP
22 Oct - 27 Oct	TAP
09 Oct - 16 Oct	TAP
19 Oct - 25 Oct	TAP	direct

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

The deals are updated regularly. The prices may go up as tickets are purchased by other travellers. Only the cheapest flights are offered. Select a price to book and secure these cheap prices.

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Cheapest return flights from Porto to Boston in October from 410€

Return flights