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Cheap Flights from St Louis to Denver - STL to DEN

Popular flights from St Louis to Denver

If your flight days are flexible and you looking for a good deal, our charts on cheap flights provide some insight regarding affordable flight options for your next big adventure.

American Airlines
Departure Date Return Date Lowest Price
Feb 29, 2016 Mar 3, 2016 $223
Mar 1, 2016 Mar 3, 2016 $223
Frontier Airlines
Departure Date Return Date Lowest Price
Feb 15, 2016 Feb 17, 2016 $88
Feb 16, 2016 Feb 17, 2016 $88
Feb 16, 2016 Feb 18, 2016 $88
Feb 22, 2016 Feb 25, 2016 $88
Feb 23, 2016 Feb 25, 2016 $88
United Airlines
Departure Date Return Date Lowest Price
Apr 13, 2016 Apr 19, 2016 $174

How Much Does it Cost to Fly from St Louis to Denver (STL to DEN)?

We have collected flight cost data from across the web for travel from St Louis to Denver, and have found the average flight price for this trip to be $102.

When Can I Buy the Cheapest Flight from St Louis to Denver (STL to DEN)?

Airlines can adjust prices for plane tickets from St Louis to Denver based on the day and time that you decide to book your flight. We have collected data from all airlines, and have discovered that the best days to book flights are Tuesdays, Wednesdays, and Saturdays. Read our article to find more information about the best time to buy airline tickets.

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

The chart below shows up-to-date information regarding how far in advance a flight from St Louis to Denver should be booked.

Non Stop versus 1-Stop
Advanced PurchaseNon StopOne Stop
< 7 days $208 $436
7-14 days $88 $285
14-21 days $88 $219
21-30 days $88 $213
30-60 days $88 $213
60-90 days $118 $182
90+ days $118 $239

Cheapest Day To Fly from St Louis to Denver

The chart below shows up-to-date information regarding the cheapest days to fly from St Louis to Denver.

Monday Tuesday Wednesday Thursday Friday Saturday Sunday
$88 $88 $88 $122 $122 $103 $108

Lowest Fares Chart By Month from St Louis to Denver

The chart below shows the lowest fare by month when flying from St Louis to Denver.

Month Origin Destination Carrier Depart Date Return Date Stops Price
February St Louis Denver Frontier 2/15/16 2/17/16 0 $88
March St Louis Denver Frontier 3/1/16 3/2/16 0 $88
April St Louis Denver Frontier 4/6/16 4/16/16 0 $118
May St Louis Denver Frontier 5/7/16 5/14/16 0 $118
June St Louis Denver Frontier 6/1/16 6/8/16 0 $118
July St Louis Denver Frontier 7/27/16 8/2/16 0 $171
August St Louis Denver Frontier 8/2/16 8/10/16 0 $128
September St Louis Denver United 9/14/16 9/16/16 0 $285

Cheapest Weekend Non-Stop Flights for the Next 30 Days from St Louis to Denver

If you're ready to take a trip in the next 30 days and want to fly on the weekend, you might be wondering which weekend is the cheapest to fly. The chart below shows up-to-date data regarding weekend flight prices from St Louis to Denver.

Next 30 Days

SunMonTueWedThuFriSat
7 8 9 10 11 12 13
$248
14 15 16 17 18 19 20
$248 $163
21 22 23 24 25 26 27
$163 $113
28 29 1 2 3 4 5
$113 $103
6 7 8 9 10 11 12
$103 $148
13 14 15 16 17 18 19
$148

Non-Stop vs Connecting Flights from St Louis to Denver (STL to DEN)

Your St Louis to Denver flight can be significantly cheaper by choosing a multi-stop airline ticket. Although these connecting flights sacrifice some convenience, on average, travelers save 20%-60% when they choose to fly multi-stop versus a direct flight.

The average price for connecting flights from St Louis to Denver is $202.

The average price for non-stop flights from St Louis to Denver is $131.

The chart below shows up to date information regarding non-stop flights from St Louis to Denver.

Nonstop Flight Details from St Louis to Denver
CarrierMonTueWedThuFriSatSunEarliest FlightLatest Flight
Frontier 1 1 1 1 1 1 1 20:30 20:30
United 7 5 6 10 8 7 4 05:40 19:53

Round Trip vs One Way Flights from St Louis to Denver (STL to DEN)

We have found that there is often no price difference between buying a round trip flight versus a one way flight. Increased flexibility is the main benefit when it comes to buying a one way flight from St Louis to Denver. However, booking a round trip flight can be a simpler process. You can compare round trip and one way flights by using our flight comparison.

The average price for one way flights from St Louis to Denver is $86.

The average price for round trip flights from St Louis to Denver is $161.

More Cheap Flights

FlightsAirlineLowest Price
Bloomington - Normal to Denver Delta, American, Frontier $402
Springfield to Denver Delta, United, US Airways, American $449
Moline to Denver United, Delta, US Airways, American $444
Peoria to Denver United, Delta, American $313
Evansville to Denver Delta, American $447
Champaign to Denver American $317
Springfield to Denver United, American $317
St Louis to Colorado Springs United, Delta, US Airways, American $226
St Louis to Dallas - Ft Worth United, Delta, American, Frontier $203
St Louis to Chicago Alaska, United, Delta, US Airways, American, Air Choice One $213
St Louis to Las Vegas Alaska, United, Delta, US Airways, American, Frontier, AirTran $104
St Louis to Phoenix Alaska, United, Delta, US Airways, American, Frontier, AirTran $238
St Louis to Los Angeles Alaska, United, Delta, US Airways, American, Frontier, AirTran $244
St Louis to Atlanta United, Delta, US Airways, American, AirTran $108
Springfield to Colorado Springs Delta, United, US Airways, American $454
St Louis to Aspen United, Delta, American $302
St Louis to Hayden - Steamboat$384
Moline to Colorado Springs United, Delta, US Airways, American $450
St Louis to New York United, US Airways, American, Frontier, AirTran $253
Evansville to Colorado Springs Delta, American $444
Peoria to Colorado Springs United, Delta, American $395
St Louis to Salt Lake City United, Delta, American, US Airways, Frontier, AirTran $178
St Louis to Vail United, Delta, US Airways, American $540
Bloomington - Normal to Colorado Springs Delta, American $338
Springfield to Colorado Springs United, American $337
St Louis to Houston United, Delta, American, AirTran $304
St Louis to San Francisco Alaska, United, Delta, US Airways, American, Frontier, AirTran $237
Moline to Dallas - Ft Worth Delta, United, US Airways, American $446
St Louis to Albuquerque United, Delta, US Airways, American, Frontier, AirTran $355
St Louis to Seattle Alaska, United, Delta, US Airways, American, Frontier, AirTran $248

Airlines Flying from St Louis to Denver (STL to DEN)

Below are the different airlines that fly from St Louis to Denver with the average price of their plane tickets. Just remember that different airlines offer different levels of comfort and service, so consider convenience when choosing your airline.

Below is the full flight schedule summary of the next 30 days for flights from St Louis to Denver.

St Louis to Denver
Airline Connections Mon Tue Wed Thu Fri Sat Sun
American ORD X X X X X X X
Delta MSP X X X X X X X
Frontier - X X X X X X X
United - X X X X X X X
United ORD X X X X X X X
Southwest - X X X X X X X
Southwest OMA X X X X X X X

Airports for Your Route

These pages contain information about the major airports in St Louis and Denver, so you can feel comfortable knowing how to get around whether you are about to take off or you just landed.

St Louis to Denver Flight Questions

Below are some common questions that asked about this flight route:

Question: How long is a direct flight from St Louis to Denver?
Answer: The average St Louis to Denver flight time is 2 hours and 30 minutes.
Question: How many miles are there between St Louis and Denver?
Answer: The distance from St Louis to Denver is 767 miles.
Question: How common are direct flights from St Louis to Denver?
Answer: There are 39 direct flights from St Louis to Denver.
Question: What is the most popular airline for non-stop flights from St Louis to Denver?
Answer: United Airlines provides 82% of the non-stop flights between St Louis and Denver.
Question: What are the most popular connecting cities when flying from St Louis to Denver?
Answer: Chicago, IL
St Louis (STL) To Denver (DEN) Flights: Cheap Flights From St Louis To Denver | FareCompare.