Cheap flights from Denver to St. Louis

Round-trip
1 adult
Economy
From?
To?
Mon 6/28
Mon 7/5

Flight information for Denver to St. Louis
(DEN to STL)

Find info about flight duration, direct flights, and airports for your flight from Denver to St. Louis
Best Price Found$124The best flight deal from Denver to St. Louis found on momondo in the last 72 hours is $124
Fastest flight time1h 58mThe fastest flight from Denver to St. Louis takes 1h 58m
Direct flightsNoneThere are no direct flights from Denver to St. Louis. Popular non-direct route for this connection is Denver Intl Airport - Lambert-St Louis Airport.
Airports in St. Louis1 airportThere is 1 airport near St. Louis: Lambert-St Louis (STL)

How to get the cheapest flight ticket from Denver to St. Louis

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly from Denver to St. Louis?

October

The cheapest time of year to fly to St. Louis from Denver is October. Most expensive is December

What is the cheapest day to depart Denver for St. Louis?

Saturday

The cheapest day of the week is typically Saturday. The most expensive is typically Monday

When is the cheapest time to fly from Denver to St. Louis?

in the evening

Denver to St. Louis flights are approximately 50% more expensive in the afternoon than in the evening

What is the cheapest airline that flies to St. Louis from Denver?

Frontier

American Airlines, Delta, and Frontier are the most popular carriers operating from Denver to St. Louis

What is the cheapest Denver to St. Louis flight route?

Denver Intl - Lambert-St Louis

Fly from Denver Intl to Lambert-St Louis for the best Denver - St. Louis flight prices

How far in advance should you book Denver to St. Louis flights?

13 days before

The cheapest time to buy a flight from Denver to St. Louis is approximately 13 days to departure


Easily compare round-trip flights from Denver to St. Louis

Below you can see the best fares for your round-trip flight route over the next three months. All fares were found on momondo this week. Browse the quickest and cheapest flights from Denver to St. Louis by changing tabs
Major Airline
DENDenver Intl
1h 58m
STLLambert-St Louis

Find the cheapest one-way flights from Denver to St. Louis

If you're looking for one-way flights from Denver to St. Louis, view some of our deals below provided by Major Airline
Major Airline
DENDenver Intl
1h 58m
STLLambert-St Louis

Best airlines flying from Denver to St. Louis

Compare and see reviews for airlines that fly from Denver to St. Louis with momondo
AirlineRatingFree CancellationPrice
Frontier
PriceFrom $51
Free Cancellation
Rating
7.1
7.5

Boarding

6.8

Comfort

7.7

Crew

6.5

Entertainment

6.7

Food

Reviews

Cons: I asked for a bottle of water because i needed to take my meds and I was given the run around and after i payed i Was given the bottle of water followed by we are about to land in half an hour are you sure?? Of course im sure i need to take my meds. I am a veteran and have to take my meds on time.

1 / 10
American Airlines
PriceFrom $57
Free Cancellation
Rating
7.2
7.4

Boarding

7.1

Comfort

7.9

Crew

7.0

Entertainment

6.8

Food

Reviews

Pros: Delayed flight no reasons seems like American Airlines don’t know what to do in these situations

Cons: I believe this airlines should have figured the answer to this question by now.

1 / 10
Southwest
PriceFrom $63
Free Cancellation
Rating
8.4
8.6

Boarding

8.5

Comfort

8.8

Crew

7.6

Entertainment

7.8

Food

Reviews

Pros: The plane was new and the seats were nice.

1 / 10
Delta
PriceFrom $77
Free Cancellation
Rating
8.1
8.3

Boarding

8.4

Comfort

8.3

Crew

7.9

Entertainment

8.1

Food

Reviews

Cons: Wouldn't let us on the flight when there was plenty of time to get there. Manager was arrogant and slow - didn't care. Poor policies at that airport.

1 / 10
United Airlines
PriceFrom $85
Free Cancellation
Rating
6.8
7.2

Boarding

6.6

Comfort

7.5

Crew

6.6

Entertainment

6.1

Food

Reviews

Pros: Everything! From ticketing agent to all the crew on our flight back were awesome. Thank you!

1 / 10

  • Are airlines flying from Denver Intl to Lambert-St Louis offering flexible cancellation due to COVID-19?

    Some of our partner airlines flying from Denver Intl to Lambert-St Louis are adopting new policies due to the global impact of COVID-19. Some of the airlines that may be waiving their cancellation fees are Frontier, United Airlines, and American Airlines. You can search for the full list of airlines like Frontier that are offering this flexibility.


Alternative routes for Denver to St. Louis

Compare alternative flights to and from nearby airports and cities to discover the best prices and most convenient flight times
Denver to Kansas City Flights
Fastest flight time1h 35m
Cheapest price$123
Colorado Springs to Kansas City Flights
Fastest flight time4h 49m
Cheapest price$251
Colorado Springs to St. Louis Flights
Fastest flight time5h 11m
Cheapest price$298