AirHint found the following cheapest return flights from Seattle (SEA) to Lisbon (LIS) in February 2026 (see full year).
Return flights
| 02 Feb - 28 Feb | United | ||
| 03 Feb - 28 Feb | United | ||
| 08 Feb - 28 Feb | United | ||
| 20 Feb - 23 Feb | Air France | ||
| 01 Feb - 21 Feb | Lufthansa |
Also check the deals for one-way flights from Seattle to Lisbon in February.
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