Cheapest return flights from Washington to Porto in July from $677

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

Return flights

21 Jul - 28 Jul Lufthansa
16 Jul - 23 Jul Lufthansa
14 Jul - 21 Jul TAP
17 Jul - 24 Jul Lufthansa
13 Jul - 20 Jul TAP
10 Jul - 17 Jul TAP
20 Jul - 27 Jul TAP
18 Jul - 25 Jul Lufthansa
09 Jul - 16 Jul TAP
15 Jul - 22 Jul Lufthansa

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

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