Cheapest return flights from Denver to Lisbon in July from $907

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 July 2025 (see full year).

Return flights

31 Jul - 07 Aug Turkish Airlines
14 Jul - 21 Jul Frontier Airlines
08 Jul - 15 Jul Air Canada
16 Jul - 25 Jul SWISS
04 Jul - 11 Jul Frontier Airlines
23 Jul - 30 Jul Turkish Airlines
15 Jul - 31 Jul Air Canada
09 Jul - 16 Jul Air Canada
15 Jul - 22 Jul Air Canada
16 Jul - 23 Jul Air Canada
22 Jul - 29 Jul Air Canada
23 Jul - 08 Aug United
29 Jul - 05 Aug KLM
26 Jul - 02 Aug Aer Lingus
31 Jul - 09 Aug Icelandair
28 Jul - 04 Aug Air France
25 Jul - 03 Aug Aer Lingus
27 Jul - 03 Aug Air Canada
25 Jul - 01 Aug Air France

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

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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