Cheapest return flights from Washington to Porto in January from $456

AirHint found the following cheapest return flights from Washington (IAD) to Porto (OPO) in January 2026 (see full year).

Return flights

27 Jan - 03 Feb Lufthansa
28 Jan - 04 Feb Air France
29 Jan - 03 Feb Lufthansa
15 Jan - 20 Jan Air Canada
16 Jan - 23 Jan Lufthansa

Also check the deals for one-way flights from Washington to Porto in January.

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