Cheapest return flights from Washington to Lisbon in September from $763

AirHint found the following cheapest return flights from Washington (DCA) to Lisbon (LIS) in September 2026 (see full year).

Return flights

02 Sep - 08 Sep Scandinavian Airlines
16 Sep - 23 Sep jetBlue
01 Sep - 14 Sep Scandinavian Airlines
17 Sep - 24 Sep jetBlue
02 Sep - 11 Sep Air Canada
20 Sep - 27 Sep jetBlue
04 Sep - 12 Sep jetBlue
27 Sep - 04 Oct jetBlue
03 Sep - 12 Sep jetBlue
03 Sep - 10 Sep jetBlue
18 Sep - 25 Sep jetBlue

Also check the deals for one-way flights from Washington to Lisbon in September.

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 Lisbon

Cheap car rent in Lisbon

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