Cheapest one-way flights from Denver to Lisbon in October from $343

AirHint found the following cheapest one-way flights from Denver (DEN) to Lisbon (LIS) in October 2025 (see full year).

One-Way flights

15 Oct jetBlue
01 Oct Icelandair

Also check the deals for return flights from Denver to Lisbon in October.

Skyscanner

The deals are updated regularly. The prices may go up as tickets are purchased by other travellers. Only the cheapest flights are offered. Select a price to book and secure these cheap prices.

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