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

Return flights

15 Oct - 23 Oct	Scandinavian Airlines
08 Oct - 13 Oct	Scandinavian Airlines
03 Oct - 13 Oct	Scandinavian Airlines
22 Oct - 26 Oct	Scandinavian Airlines
10 Oct - 20 Oct	Scandinavian Airlines
17 Oct - 23 Oct	Scandinavian Airlines
03 Oct - 12 Oct	Scandinavian Airlines
09 Oct - 16 Oct	SWISS
31 Oct - 02 Nov	SWISS
31 Oct - 03 Nov	SWISS
31 Oct - 05 Nov	SWISS
09 Oct - 13 Oct	SWISS
23 Oct - 28 Oct	Ryanair
22 Oct - 05 Nov	SWISS
31 Oct - 04 Nov	SWISS
16 Oct - 27 Nov	SWISS
31 Oct - 08 Nov	SWISS
28 Oct - 06 Nov	TAP	direct
29 Oct - 06 Nov	TAP	direct
30 Oct - 03 Nov	SWISS

Also check the deals for one-way flights from Porto to Newark 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 Newark in October from 305€

Return flights