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Amazing STL to DEN Flight Deals

The cheapest flights to Denver Intl. found within the past 7 days were $67 round trip and $34 one way. Prices and availability subject to change. Additional terms may apply.

Flight Schedule for STL to DEN

Carrier Flight Depart STL Arrive DEN Tue
10/20
Wed
10/21
Thu
10/22
Fri
10/23
Sat
10/24
Sun
10/25
Mon
10/26
Stops
UA 5566 08:59 am 10:29 am Check fare Check fare Check fare Check fare Check fare Check fare Check fare 0 stop(s)
UA 5558 05:13 pm 06:40 pm Check fare Check fare Check fare Check fare Check fare Check fare Check fare 0 stop(s)
F9 279 07:23 pm 08:54 pm Check fare - Check fare - Check fare - - 0 stop(s)
F9 281 06:30 pm 08:01 pm - Check fare - Check fare - Check fare Check fare 0 stop(s)
UA 5775 11:20 am 12:50 pm - - Check fare Check fare - Check fare Check fare 0 stop(s)

Best Denver Intl. Flight and Hotel Packages

Denver Intl. flight + hotel packages - economy flights

FAQs about flights from Lambert-St. Louis Intl. Airport (STL) to Denver Intl. Airport (DEN)

Are there direct flights from St. Louis Lambert International Airport to Denver Airport?

United Airlines and Southwest Airlines are a couple of the airlines that have direct flights from St. Louis, MO (STL-Lambert-St. Louis Intl.) to Denver, CO (DEN-Denver Intl.). If you're eager to get to where you're headed fast, these are the options for you.

If I am not able to travel due to COVID-19, can I change my booking to a later date?

For more info about changing your flight to Denver, CO (DEN-Denver Intl.), please visit our Customer Service Portal.

How long is the flight from St. Louis Lambert International Airport to Denver Airport?

Flights between St. Louis, MO (STL-Lambert-St. Louis Intl.) and Denver, CO (DEN-Denver Intl.) take about 3 hours and 13 minutes in total. Make the most of your time in the air by napping, reading, watching a film or doing all three.

What is the flight distance from St. Louis Lambert International Airport to Denver Airport?

Covering 963 mi between St. Louis, MO (STL-Lambert-St. Louis Intl.) and Denver, CO (DEN-Denver Intl.) calls for a glass of bubbly and some good movies. Lean back, get cozy and just enjoy the ride.

What airlines fly from St. Louis Lambert International Airport to Denver Airport?

There are a couple of airlines advertising direct flights from St. Louis, MO (STL-Lambert-St. Louis Intl.) to Denver, CO (DEN-Denver Intl.). Southwest Airlines (WN) is one of the most reputable, and operates approximately 161 flights every month. You may want to also pore through the deals available through United Airlines (UA). Another popular airline, it operates 146 flights monthly on the St. Louis to Denver route. Be sure to compare the two airlines to score the best fare.

What is the best day to buy a plane ticket?

This just in! Airfares offered on Tuesdays tend to be the cheapest, according to flight demand on Travelocity in 2019. Wednesday and Friday prices are also good, but you may want to prepare your budget if booking on a Monday, as data shows the start of the week is when prices are generally at their highest.

What are the cheapest days to fly?

Frequent travelers may already know this, but earlier in the week can be the cheapest time to fly. In 2019, flights departing on a Tuesday were generally the cheapest of the week, whereas you may pay a premium for weekend flights when demand is usually high. On average, tickets were most expensive for Saturday departures, so if you need to fly out on a weekend, you might look for deals ahead of time.

How far in advance can you book a flight?

Trying to figure out how early you should book your flight? It's possible to start comparing international airfares on Travelocity up to 12 months in advance. However, it does depend on the carrier as not all airlines release their prices that far out. According to our 2019 flight demand trends, last minute planners can still bag a bargain with some of the cheapest fares appearing 1-2 weeks prior to their travel dates.

How can I save money on airline tickets?

We'll let you in on a secret...You can save big on flights if you mix and match your airlines and fare types. In fact, travelers who booked flights on Travelocity in 2019 saved nearly 50% when their return flights consisted of two different airlines or fare types.

*According to flight demand on Travelocity.com from January to December 2019. Savings are subject to change based on departure location, date and destination.

Lambert-St. Louis Intl. to Denver Intl. Flight FAQ

Traveling FromLambert-St. Louis Intl.
Traveling ToDenver Intl.
Shortest Flight Time2 hours 15 mins
Earliest Departure Time7:00AM CDT
Latest Departure Time5:20PM CDT
Lowest Flight Price$67

St. Louis to Denver Carriers and Route Information

Flight path for flights from Lambert-St. Louis International Airport to Denver International Airport


Distance:
772.00 miles


Airlines & Aircraft Used on STL to DEN Flight Routes


Airline Carrier
Aircraft
American Airlines
Airbus A340-300
American Airlines
Boeing 737-800 pax
United Airlines
Boeing 737-300 pax
United Airlines
Boeing 737-800 (winglets) pax
United Airlines
Boeing 777-200 pax
*Price based on the lowest price found within past 24 hours and based upon one night stay for two adults over the next thirty days. Prices and availability subject to change. Additional terms may apply.