Cheap Flights from Lisbon District to Aspen

View €648 flight on Tue, 2 Sep 2025Opens in a new window

Popular airlines from Lisbon to Aspen

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Cheap flights from Lisbon District to Aspen (PT-11-DEN)

Prices were available within the past 7 days and start at €648 for one-way flights and €718 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

British Airways
Thu, 28 Aug - Thu, 11 Sep
LIS
Lisbon
DEN
Denver
€718 Return, found 3 hours ago
€718
Return
found 3 hours ago
Select British Airways flight, departing Thu, 28 Aug from Lisbon to Denver, returning Thu, 11 Sep, priced at €718 found 3 hours ago
Aer Lingus
Sat, 30 Aug - Mon, 15 Sep
LIS
Lisbon
DEN
Denver
€738 Return, found 4 days ago
€738
Return
found 4 days ago
Select Aer Lingus flight, departing Sat, 30 Aug from Lisbon to Denver, returning Mon, 15 Sep, priced at €738 found 4 days ago
Lufthansa
Thu, 28 Aug - Thu, 11 Sep
LIS
Lisbon
DEN
Denver
€745 Return, found 3 hours ago
€745
Return
found 3 hours ago
Select Lufthansa flight, departing Thu, 28 Aug from Lisbon to Denver, returning Thu, 11 Sep, priced at €745 found 3 hours ago
United
Thu, 28 Aug - Thu, 11 Sep
LIS
Lisbon
DEN
Denver
€760 Return, found 3 hours ago
€760
Return
found 3 hours ago
Select United flight, departing Thu, 28 Aug from Lisbon to Denver, returning Thu, 11 Sep, priced at €760 found 3 hours ago
Swiss International Air Lines
Sat, 30 Aug - Mon, 15 Sep
LIS
Lisbon
DEN
Denver
€765 Return, found 4 days ago
€765
Return
found 4 days ago
Select Swiss International Air Lines flight, departing Sat, 30 Aug from Lisbon to Denver, returning Mon, 15 Sep, priced at €765 found 4 days ago
Delta
Thu, 28 Aug - Thu, 11 Sep
LIS
Lisbon
DEN
Denver
€783 Return, found 3 hours ago
€783
Return
found 3 hours ago
Select Delta flight, departing Thu, 28 Aug from Lisbon to Denver, returning Thu, 11 Sep, priced at €783 found 3 hours ago

Find the cheapest month to fly from Lisbon (LIS) to Denver (DEN)

February is typically the cheapest month to fly

From €599 - €819 per traveller.

Graph displaying average flight prices per month

*Available to Expedia members.