Cheapest return flights from Porto to Boston in September from $479

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

Return flights

17 Sep - 28 Sep TAP direct
25 Sep - 29 Sep Iberia
22 Sep - 28 Sep Delta
27 Sep - 01 Oct Delta
28 Sep - 04 Oct Austrian Airlines
14 Sep - 21 Sep Iberia
28 Sep - 03 Oct Austrian Airlines
14 Sep - 21 Sep TAP direct

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

Skyscanner

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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