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

Return flights

13 Feb - 28 Feb	Royal Air Maroc
28 Feb - 06 Mar	Scandinavian Airlines
05 Feb - 08 Feb	Scandinavian Airlines
04 Feb - 08 Feb	Royal Air Maroc
21 Feb - 27 Feb	Scandinavian Airlines
04 Feb - 09 Feb	TAP	direct
21 Feb - 27 Feb	TAP	direct
01 Feb - 08 Feb	TAP	direct
05 Feb - 12 Feb	TAP	direct
17 Feb - 21 Feb	Turkish Airlines
05 Feb - 08 Feb	TAP	direct
26 Feb - 08 Mar	Turkish Airlines
03 Feb - 31 Mar	Turkish Airlines
27 Feb - 06 Mar	TAP	direct
27 Feb - 07 Mar	Delta

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 484€

Return flights