Cheapest return flights from Washington to Porto in April from $634

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 April 2025 (see full year).

Return flights

14 Apr - 20 May United
28 Apr - 07 May United
16 Apr - 27 Apr Delta
18 Apr - 27 Apr Delta
16 Apr - 23 Apr Delta
16 Apr - 26 Apr Delta
08 Apr - 15 Apr TAP
04 Apr - 30 Apr United
09 Apr - 21 Apr Air Canada
21 Apr - 10 May British Airways
12 Apr - 21 Apr British Airways
22 Apr - 27 Apr British Airways

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

Skyscanner

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.

Book a cheap hotel in Porto

Cheap car rent in Porto