$26 Find Cheap Flights from Denver to St. Louis - Compare and Save

These are the earliest and latest flight times available from Denver to St. Louis:

• Earliest: departs at 5:50 am and lands at 7:53 am
• Latest: departs at 9:55 pm and lands at 11:58 pm.

The flight takes about 2h 03m.

Two cabin classes are available on flights from Denver to St. Louis:

• Economy Class
• First Class

A nonstop flight from Denver to St. Louis takes 2h 03m, covering 767 miles.

No, a passport is not required for this domestic route, but you will need a real ID-compliant driver's license, a state ID or another TSA-accepted form of identification.

Round-trip flights from Denver to St. Louis range from $213 to $387, with an average of $303 over the past 12 months. Anything below $213 counts as a good deal.

Last-minute fares on this route (booked within two weeks of departure) run 43% above the $303 route average. Book 16 weeks before departure for the lowest fares.

On this route, layover flights are cheaper than nonstop options on average. Layover fares average $211 round-trip via Las Vegas Harry Reid Intl (LAS), compared to $308 for nonstop.

There is no standard. Checked-bag policies vary by airline on this route. Most carriers charge $40–$100 for the first checked bag in economy. Premium fares and elite-status bookings typically include a free checked bag.

The Boeing 737 MAX 8 family is used most often on this route, operated mainly by Southwest. Other aircraft seen on the route include Boeing 737-800 Passenger/BBJ2 (winglets) variants.

Morning is the busiest departure period on Denver to St. Louis flights, with 45% of flights leaving in that window. Afternoon departures account for 33%, evening flights for 22%, and night flights for 0%.

Yes. Based on fares seen in the past 5 days, round-trip prices on this route showed a wide range, from about $177 to $1,699. That means the highest observed fare was about 10x higher than the lowest one.

JetBlue is the only airline on the Denver to St. Louis route offering in-flight Wi-Fi. Pricing depends on fare class.

Based on prices from the last 5 days, flying between Denver and St. Louis is around $177 round-trip, with a flight time of about 11h 26m. Recent bus fares are around $157, with a trip time of about 16h 30m. Compared with flying, recent bus fares are roughly 12% lower. However, taking the bus takes about 5+ hours longer each way.

One-way fares from Denver to St. Louis are currently lower than usual. Average one-way flight prices are about $66, which is 64% below the typical average for this route.

Lambert-St Louis Airport (STL) hosts 5 major car rental companies, with daily rates averaging $78 for economy cars. Top options include:

• Hertz
• Budget
• Alamo
• Enterprise Rent-A-Car
• Payless

Flights from Denver to St. Louis usually depart from Denver Intl (DEN) and arrive at Lambert-St Louis (STL).

Connecting flights from Denver to St. Louis most commonly pass through:

• Las Vegas Harry Reid Intl (LAS) - 54% of one-stop connections
• Orlando (MCO) - 46% of one-stop connections

Yes. Flexible dates can save you up to 32% on flights from Denver to St. Louis. Saturday is the cheapest departure day at $240 round-trip on average, while Monday is the most expensive at $348, a difference of $108.

Cheaper weekend fares like these are typical of routes dominated by weekday business travel.

3 airlines operate flights between Denver and St. Louis. The airlines offering nonstop flights on this route include:

• Southwest
• United Airlines
• Frontier

Flying via Las Vegas Harry Reid Intl (LAS) gives the shortest average 1-stop total travel time at 9h 35m, compared with 13h 59m via Orlando (MCO).

St. Louis is 1 hour ahead of Denver (Central Time vs Mountain Time). Plan for the time shift when scheduling connections or first-day activities.

Some of the most popular sights in St. Louis are Busch Stadium, Enterprise Center and America's Center Convention Complex. These are among the most viewed places in St. Louis on KAYAK.

Among airlines operating Denver to St. Louis flights:

• Southwest: offers free seat selection
• United Airlines: offers extra legroom; offers free seat selection
• Frontier: offers free seat selection

Extra legroom and free seat selection availability depends on fare class and route.

Here are some options for this route, based on selected ticket types and cabin classes:

• Southwest: a cabin bag and a checked bag in Economy Class
• United Airlines: a cabin bag and a checked bag in Economy Class
• Frontier: a cabin bag in Economy Class class

Bag allowance can vary by ticket type, cabin class, route and airline, so always check the fare details before booking.

Yes, direct flights exist between Denver International Airport and Lambert St. Louis Airport. Multiple carriers, like Southwest Airlines and United Airlines, provide direct flights from DEN to Lambert Airport if you want to reach your destination quickly.

Yes, there is public transportation from Lambert St Louis to downtown. There are multiple options such as train, bus, or even taxi. Services run daily and leave every 20min. The travel time is roughly 30min.

Yes, there are quite a few hotel alternatives at and in close proximity to Lambert International Airport in St. Louis, including Hampton Inn St. Louis Airport and the Comfort Inn & Suites St. Louis-Hazelwood.

STL Airport has a free 24h Terminal Shuttle that operates between Exit 12 at both terminals. There is currently no way to walk between terminals. Terminal 1 and Terminal 2 are less than one mile apart, thus the shuttle trip duration is roughly 10min. Every 8 to 15min, shuttles are scheduled to pick up passengers.