AirHint found the following cheapest return flights from Denver (DEN) to Lisbon (LIS) in February 2026 (see full year).
Return flights
| 25 Feb - 04 Mar | Lufthansa | ||
| 11 Feb - 18 Feb | Delta | ||
| 11 Feb - 21 Feb | Air France | ||
| 10 Feb - 17 Feb | United | ||
| 08 Feb - 15 Feb | United |
Also check the deals for one-way flights from Denver to Lisbon in February.
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