Cheapest return flights from Denver to Lisbon in May from $794
AirHint found the following cheapest return flights from Denver (DEN) to Lisbon (LIS) in May 2025 (see full year).
Return flights
Also check the deals for one-way flights from Denver to Lisbon in May.
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.
