$99 Cheap Frontier Airlines flights Spokane (GEG) to Denver (DEN)

View $99 flight on Tue, Jun 17, 2025Opens in a new window

$99 Cheap Frontier Airlines flights Spokane (GEG) to Denver (DEN)

Prices were available within the past 7 days and start at $99 for one-way flights and $164 for roundtrip, for the period specified. Prices and availability are subject to change. Additional terms apply.
Frontier Airlines
Thu, Jul 31 - Tue, Aug 5
GEG
Spokane
DEN
Denver
$164
Roundtrip
Found 2 days ago
Select Frontier Airlines flight, departing Thu, Jul 31 from Spokane to Denver, returning Tue, Aug 5, priced at $164 Found 2 days ago
Frontier Airlines
Thu, Jul 31 - Sun, Aug 3
GEG
Spokane
DEN
Denver
$203
Roundtrip
Found 2 days ago
Select Frontier Airlines flight, departing Thu, Jul 31 from Spokane to Denver, returning Sun, Aug 3, priced at $203 Found 2 days ago
Frontier Airlines
Thu, Jun 12 - Tue, Jun 17
GEG
Spokane
DEN
Denver
$308
Roundtrip
Found 22 hours ago
Select Frontier Airlines flight, departing Thu, Jun 12 from Spokane to Denver, returning Tue, Jun 17, priced at $308 Found 22 hours ago
Frontier Airlines
Thu, Jun 12 - Sun, Jun 15
GEG
Spokane
DEN
Denver
$318
Roundtrip
Found 22 hours ago
Select Frontier Airlines flight, departing Thu, Jun 12 from Spokane to Denver, returning Sun, Jun 15, priced at $318 Found 22 hours ago
Flights from Spokane (GEG) to Denver (DEN)
Origin airport
Spokane Intl.
Destination airport
Denver Intl.
Airlines serving
Alaska Airlines, American Airlines, Delta, Frontier Airlines, Hawaiian Airlines, United
Popular airline
Alaska Airlines
Distance
1336 km
Average flight time
3 hours 16 mins