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

Return flights

11 Feb - 18 Feb	Scandinavian Airlines
23 Feb - 02 Mar	Scandinavian Airlines
04 Feb - 11 Feb	Scandinavian Airlines
14 Feb - 27 Feb	Scandinavian Airlines
18 Feb - 25 Feb	Scandinavian Airlines
14 Feb - 27 Feb	TAP	direct
15 Feb - 22 Feb	TAP	direct
14 Feb - 21 Feb	Scandinavian Airlines
28 Feb - 07 Mar	Scandinavian Airlines
08 Feb - 15 Feb	Icelandair
16 Feb - 23 Feb	Scandinavian Airlines
06 Feb - 13 Feb	TAP	direct
27 Feb - 06 Mar	TAP	direct
03 Feb - 31 Mar	TAP	direct
23 Feb - 02 Mar	TAP	direct

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

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 February from 413€

Return flights