Denver
Lisbon
BEST
DEAL
Mon, 23 Dec
DEN - LIS
Sun, 29 Dec
LIS - DEN
$2348
$2292
Prime price per passenger
Denver
Lisbon
BEST
DEAL
Fri, 10 Jan
DEN - LIS
$283
$272
Prime price per passenger
Denver
Lisbon
BEST
DEAL
Wed, 08 Jan
DEN - LIS
Wed, 15 Jan
LIS - DEN
$745
$730
Prime price per passenger
Denver
Lisbon
BEST
DEAL
Thu, 26 Dec
DEN - LIS
Wed, 08 Jan
LIS - DEN
$971
$964
Prime price per passenger
Denver
Lisbon
BEST
DEAL
Mon, 30 Dec
DEN - LIS
Mon, 13 Jan
LIS - DEN
$894
$861
Prime price per passenger
Denver
Lisbon
BEST
DEAL
Tue, 07 Jan
DEN - LIS
Tue, 14 Jan
LIS - DEN
$749
$734
Prime price per passenger