Cheapest return flights from Washington to Porto in October from $596

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

Return flights

05 Oct - 16 Oct American Airlines
09 Oct - 14 Oct Air Canada
14 Oct - 18 Oct Iberia
04 Oct - 11 Oct United

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

Powered by

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

Feel free to contact us with any feedback or request another flight research.