Cheapest return flights from Denver to Lisbon in July from $956

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

23 Jul - 30 Jul Aer Lingus
03 Jul - 10 Jul Icelandair
20 Jul - 27 Jul Aer Lingus
08 Jul - 15 Jul Lufthansa
02 Jul - 09 Jul SWISS
13 Jul - 19 Jul Air Canada
26 Jul - 02 Aug Icelandair
19 Jul - 26 Jul Aer Lingus
24 Jul - 31 Jul Lufthansa
22 Jul - 29 Jul Lufthansa
01 Jul - 08 Jul Air Canada
25 Jul - 01 Aug Air Canada
28 Jul - 04 Aug SWISS
27 Jul - 03 Aug Air Canada

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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