Cheap Flight Tickets from Denver (DEN) to St Louis (STL), Starting at $192

Good to Know: Cheapest and Fastest DEN - STL Flights

Useful information for finding best airline tickets from Denver International to Lambert St Louis International on your next trip.

Cheapest Round Trip Flight

$298

AA American Airlines • 1 stop • 8h 46m

Sep 21 – Sep 27

The cheapest round trip flight from Denver to St Louis (DEN-STL-DEN) is currently $298

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Cheapest One way Flight

$192

F9 Frontier Airlines • 1 stop • 18h 36m

Sep 23

The cheapest one way flight from Denver to St Louis (DEN-STL) is currently $192

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Cheapest Direct Flight

$602

WN Southwest Airlines • nonstop • 3h 20m

Sep 21

The cheapest nonstop flight from Denver to St Louis (DEN-STL) is currently $602

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Fastest Flight

3h 20m

The fastest nonstop flight from Denver to St Louis (DEN-STL) takes 3h 20m

Top Airlines Flying from Denver to St Louis

Southwest Airlines-WN

Southwest Airlines

Delta Airline, DL

Delta Airlines

United Airlines, UA

United Airlines

American Airlines, AA

American Airlines

Alaska Airlines -AS

Alaska Airlines

Latest Flight Deals from Denver (DEN) to St Louis (STL)

Compare and book low fare round-trip air tickets from Denver to St Louis. Ideal for travelers with confirmed return itineraries.

Sep 21 - Sep 27, Economy
AA
Denver → St Louis
8h 46m
6:01 PM - 12:27 AM • 1 stop
AA
Denver → St Louis
7h 37m
8:30 AM - 12:27 PM • 1 stop
$298
American Airlines
Sep 21 - Sep 27, Economy
AS
Denver → St Louis
12h 35m
3:04 PM - 11:59 PM • 1 stop
AS
Denver → St Louis
13h 57m
6:29 AM - 2:06 PM • 1 stop
$517
Alaska Airlines
Sep 21 - Sep 27, Economy
WN
Denver → St Louis
3h 20m
7:00 AM - 10:00 AM • nonstop
WN
Denver → St Louis
3h 35m
5:50 PM - 7:05 PM • nonstop
$602
Southwest Airlines
Sep 21 - Sep 27, Economy
WN
Denver → St Louis
6h 55m
4:55 PM - 10:10 PM • 1 stop
WN
Denver → St Louis
3h 35m
6:45 AM - 8:00 AM • nonstop
$607
Southwest Airlines
Sep 21 - Sep 27, Economy
WN
Denver → St Louis
3h 25m
12:10 PM - 3:15 PM • nonstop
WN
Denver → St Louis
5h 30m
8:25 AM - 10:55 AM • 1 stop
$607
Southwest Airlines
Sep 21 - Sep 27, Economy
WN
Denver → St Louis
7h 30m
2:10 PM - 8:00 PM • 1 stop
WN
Denver → St Louis
3h 35m
6:45 AM - 8:00 AM • nonstop
$612
Southwest Airlines

Fly from Denver to St Louis with the Best Airfare Deals on FareLeaders

Looking for a cheap last-minute deal or the best round-trip flight from Denver to St Louis? Find the biggest savings on one-way and round-trip tickets right here.

FAQs on Denver to St Louis Flights

What are the airports in Denver?
DEN
What’s the most popular airline flying from DEN to STL?
The most popular airline flying from Denver to St Louis are
Can I fly from DEN to STL non-stop?
Yes, you can fly DEN to STL non-stop on
Which airlines fly nonstop between Denver and St Louis?
The non-stop flights between Denver and St Louis are .
What’s the earliest departure time from DEN to STL Airport?
The earliest flight leaves DEN at 7:00 am and lands in STL - Lambert St Louis International
What are the airports in St Louis?
STL
Can I make changes to my Denver to St Louis flight tickets or cancel them on FareLeaders.com?
No. We are an airfare comparison site. All the tickets are booked by the travel agent offering the flight deal and any changes or cancellations to be made are directly done directly by them or the airlines.
Can I cancel my flight tickets from DEN to STL?
Read the fare rules of the Denver to St Louis air tickets booked. Some airlines allow you to cancel the tickets within a stipulated time period with a cancellation fee.
Which airline alliances offer flights from Denver and St Louis?
operate flights between Denver and St Louis
How long does a flight from Denver to St Louis take?
It takes approximately 2 hour to fly non-stop from DEN to STL, which is 769.57 miles by air.
Which airlines provide the cheapest flights from Denver (DEN) to St Louis (STL) ?
In the past couple of days, the cheapest tickets to STL from DEN were found on F9 : USD 192
Do I need a passport to fly between DEN and STL?
No
What’s the latest departure time from DEN to STL ?
The last flight leaves DEN at 10:50 pm

Denver (DEN) to St Louis (STL): Airport Information

Origin Airport Denver International , Denver, US
Destination Airport Lambert St Louis International , St Louis, US
Distance 770 miles

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