$89 Cheap Delta flights Denver (DEN) to St. Louis (STL)

View $89 flight on Wed, Mar 4, 2026Opens in a new window

$89 Cheap Delta flights Denver (DEN) to St. Louis (STL)

Prices were available within the past 7 days and start at $89 for one-way flights and $159 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Wed, Mar 4 - Wed, Mar 11
DEN
Denver
STL
St. Louis
$159 Roundtrip, found 5 days ago
$159
Roundtrip
found 5 days ago
Select Delta flight, departing Wed, Mar 4 from Denver to St. Louis, returning Wed, Mar 11, priced at $159 found 5 days ago
Delta
Fri, Feb 6 - Mon, Feb 9
DEN
Denver
STL
St. Louis
$217 Roundtrip, found 21 hours ago
$217
Roundtrip
found 21 hours ago
Select Delta flight, departing Fri, Feb 6 from Denver to St. Louis, returning Mon, Feb 9, priced at $217 found 21 hours ago

Find the cheapest month to fly from Denver (DEN) to St. Louis (STL)

February is typically the cheapest month to fly

From $53 - $212 per traveler.
Flights from Denver (DEN) to St. Louis (STL)
Origin airport
Denver Intl.
Destination airport
Lambert-St. Louis Intl.
Airlines serving
American Airlines, Delta, Frontier Airlines, Southwest Airlines, United
Popular airline
Frontier Airlines
Distance
1228 km
Average flight time
3 hours 2 mins