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

Return flights

24 Mar - 30 Mar	Air Canada
03 Mar - 10 Mar	Air Canada
01 Mar - 08 Mar	jetBlue
17 Mar - 22 Mar	Scandinavian Airlines
18 Mar - 25 Mar	Scandinavian Airlines
11 Mar - 18 Mar	Scandinavian Airlines
07 Mar - 14 Mar	jetBlue
10 Mar - 17 Mar	jetBlue
02 Mar - 09 Mar	jetBlue
09 Mar - 16 Mar	jetBlue
31 Mar - 07 Apr	jetBlue
25 Mar - 01 Apr	jetBlue
25 Mar - 08 Apr	jetBlue
26 Mar - 02 Apr	jetBlue
30 Mar - 06 Apr	jetBlue
28 Mar - 04 Apr	jetBlue

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

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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Cheapest return flights from Washington to Lisbon in March from $543

Return flights