AirHint found the following cheapest one-way flights from Denver (DEN) to Lisbon (LIS) in June 2026 (see full year).
One-Way flights
| 03 Jun | Frontier Airlines | ||
| 28 Jun | Aer Lingus | ||
| 04 Jun | Icelandair | ||
| 24 Jun | British Airways | ||
| 10 Jun | British Airways | ||
| 01 Jun | Air France | ||
| 13 Jun | KLM | ||
| 11 Jun | British Airways | ||
| 12 Jun | British Airways |
Also check the deals for return flights from Denver to Lisbon in June.
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