AirHint found the following cheapest return flights from Portland (PDX) to Lisbon (LIS) in February 2026 (see full year).
Return flights
| 11 Feb - 18 Mar | Lufthansa | ||
| 10 Feb - 17 Mar | SWISS | ||
| 25 Feb - 02 Mar | Delta | ||
| 10 Feb - 23 Mar | Delta | ||
| 15 Feb - 21 Feb | KLM | ||
| 26 Feb - 12 Mar | Delta | ||
| 10 Feb - 24 Mar | Air France |
Also check the deals for one-way flights from Portland to Lisbon in February.
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