Cheapest return flights from Denver to Lisbon in August from $653

AirHint found the following cheapest return flights from Denver (DEN) to Lisbon (LIS) in August 2026 (see full year).

Return flights

17 Aug - 24 Aug Finnair
19 Aug - 26 Aug Air Canada
18 Aug - 25 Aug United
20 Aug - 27 Aug Turkish Airlines
11 Aug - 18 Aug Finnair
16 Aug - 23 Aug Air Canada
13 Aug - 20 Aug British Airways
14 Aug - 21 Aug British Airways
15 Aug - 22 Aug Aer Lingus

Also check the deals for one-way flights from Denver to Lisbon in August.

Powered by

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.

Book a cheap hotel in Lisbon

Cheap car rent in Lisbon

Feel free to contact us with any feedback or request another flight research.