AirHint found the following cheapest return flights from Seattle (SEA) to Lisbon (LIS) in February 2026 (see full year).
Return flights
| 04 Feb - 08 Feb | Icelandair | ||
| 05 Feb - 08 Feb | Air France | ||
| 04 Feb - 09 Feb | Delta | ||
| 05 Feb - 10 Feb | Delta | ||
| 10 Feb - 27 Feb | United | ||
| 13 Feb - 16 Feb | British Airways |
Also check the deals for one-way flights from Seattle to Lisbon in February.
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