Cheapest return flights from Washington to Porto in June from $688

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

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

Return flights

04 Jun - 11 Jun British Airways
18 Jun - 26 Jun British Airways
10 Jun - 17 Jun Delta
24 Jun - 01 Jul Delta
25 Jun - 02 Jul KLM
09 Jun - 19 Jun Air Canada
03 Jun - 10 Jun United
17 Jun - 24 Jun United
11 Jun - 18 Jun United
24 Jun - 30 Jun British Airways
08 Jun - 15 Jun United
12 Jun - 19 Jun United
26 Jun - 03 Jul United
30 Jun - 07 Jul Delta
28 Jun - 05 Jul Delta
29 Jun - 06 Jul Delta

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

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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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