Cheapest return flights from Washington to Porto in July from 587€

Best time to book flights for Washington (IAD) to Porto (OPO) flights at AirHint

AirHint found the following cheapest return flights from Washington (IAD) to Porto (OPO) in July 2025 (see full year).

Return flights

09 Jul - 16 Jul TAP
08 Jul - 15 Jul TAP
14 Jul - 21 Jul TAP
15 Jul - 22 Jul TAP
21 Jul - 28 Jul TAP
22 Jul - 29 Jul TAP
10 Jul - 17 Jul TAP
30 Jul - 21 Aug TAP
17 Jul - 24 Jul TAP
20 Jul - 27 Jul TAP
16 Jul - 23 Jul TAP
23 Jul - 18 Aug TAP
31 Jul - 22 Aug TAP

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

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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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