Cheapest return flights from Denver to Lisbon in June from $989

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 June 2025 (see full year).

Return flights

01 Jun - 08 Jun Icelandair
23 Jun - 01 Jul Frontier Airlines
28 Jun - 05 Jul Frontier Airlines
27 Jun - 04 Jul Frontier Airlines
25 Jun - 03 Jul Icelandair
28 Jun - 06 Jul Aer Lingus
24 Jun - 02 Jul Air Canada
26 Jun - 04 Jul Aer Lingus
01 Jun - 09 Jun Air Canada
26 Jun - 03 Jul Air Canada
27 Jun - 05 Jul Air Canada

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

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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