Cheapest return flights from Denver to Lisbon in August from $847

Best time to book flights for Denver (DEN) to Lisbon (LIS) flights at AirHint

AirHint found the following cheapest return flights from Denver (DEN) to Lisbon (LIS) in August 2025 (see full year).

Return flights

14 Aug - 21 Aug Icelandair
12 Aug - 19 Aug Air Canada
13 Aug - 20 Aug Air Canada
27 Aug - 03 Sep Icelandair
09 Aug - 16 Aug Icelandair
10 Aug - 17 Aug Icelandair
15 Aug - 22 Aug SWISS
16 Aug - 23 Aug Air Canada
06 Aug - 13 Aug Lufthansa
07 Aug - 14 Aug Lufthansa
05 Aug - 12 Aug Lufthansa
26 Aug - 02 Sep Air Canada
31 Aug - 08 Sep United
25 Aug - 01 Sep United
29 Aug - 08 Sep Icelandair

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

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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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