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Tue, Jul 14 - Tue, Jul 21
STL
St. Louis
DEN
Denver
$116 Roundtrip, found 8 hours ago
$116
Roundtrip
found 8 hours ago
Select Frontier Airlines flight, departing Tue, Jul 14 from St. Louis to Denver, returning Tue, Jul 21, priced at $116 found 8 hours ago
Sat, Jul 25 - Sat, Aug 1
STL
St. Louis
DEN
Denver
$119 Roundtrip, found 1 hour ago
$119
Roundtrip
found 1 hour ago
Select Frontier Airlines flight, departing Sat, Jul 25 from St. Louis to Denver, returning Sat, Aug 1, priced at $119 found 1 hour ago
Tue, Jul 14 - Sat, Jul 18
STL
St. Louis
DEN
Denver
$126 Roundtrip, found 1 day ago
$126
Roundtrip
found 1 day ago
Select Frontier Airlines flight, departing Tue, Jul 14 from St. Louis to Denver, returning Sat, Jul 18, priced at $126 found 1 day ago
Sat, Oct 10 - Sat, Oct 24
STL
St. Louis
DEN
Denver
$131 Roundtrip, found 2 days ago
$131
Roundtrip
found 2 days ago
Select Frontier Airlines flight, departing Sat, Oct 10 from St. Louis to Denver, returning Sat, Oct 24, priced at $131 found 2 days ago
Tue, Jul 21 - Tue, Jul 28
STL
St. Louis
DEN
Denver
$134 Roundtrip, just found
$134
Roundtrip
just found
Select Frontier Airlines flight, departing Tue, Jul 21 from St. Louis to Denver, returning Tue, Jul 28, priced at $134 just found

STL to DEN Route Info

Origin Airport
Destination Airport
Number Of Airlines Serving
Distance
Shortest Flight Departure Time
Shortest Flight Departure Date

Frequently asked questions

Are there non-stop flights from St. Louis Lambert International Airport to DEN?
We're just about to make your upcoming trip away even better — there are 3 airlines that will transport you nonstop from STL to Denver Intl. Airport (DEN). Seasoned flyers recommend these quality carriers:

  • Southwest Airlines
  • United Airlines
  • Frontier Airlines

What is the shortest flight from St. Louis Lambert International Airport to Denver Airport?
There's nothing as thrilling as an impromptu getaway. And with the flight time from STL to DEN being just 2 hours and 25 minutes, you'll have to come up with excuses not to take one.
How many hours flight from Lambert Field to DIA airport?
There's no excuse not to book a Denver escape when the flight time from STL to DEN is just 2 hours and 32 minutes on average. So, go ahead and secure that ticket — it's about time you had some fun.
What airlines have the most flights from St. Louis Lambert International Airport to Denver Airport?
Going on vacation is one of life's biggest pleasures, but how you get there should be equally as enjoyable. Consider booking your flight from STL to DEN with Frontier Airlines (F9). One of the most popular carriers, it offers 26 flights on this route each month. Alternatively, reserve your favorite seat with United Airlines (UA). You'll have 152 monthly flights between St. Louis and Denver to select from with this carrier.

Fare, taxes & fees: Fares include all taxes and fees, except baggage fees. Rates shown reflect fares found by other Orbitz users over the past 7 days. Due to rapidly changing airline prices & seat availability, these fares may no longer be available.

Refunds/changes/cancellations: Itinerary changes, if permitted for the fare, will have a $30 service fee charged by Orbitz. Additional airline charges may apply.

Other conditions: Schedules, fares and rules are subject to change without notice. Seats are limited and may not be available on all flights/dates or in all markets. Lower fares may be available. Fares will not be honored retroactively or in exchange for any wholly/partially unused ticket. Tickets are non-transferable and non-refundable. Fare rules are provided for the selected itinerary before booking.