Cheap flights from Denver to St. Louis (DEN - STL) from $39

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 4/15. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
DEN — STL
Mar 23 — Mar 301

The best prices from Denver Intl to Lambert-St Louis are usually found in February or September, booked 54 days in advance, depart on a Wednesday or Thursday and return on a Tuesday

Cheap flight deals from Denver to St. Louis

Discover tips and strategies to find the most affordable flight options for your journey from Denver (DEN) to St. Louis (STL). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated March 19, 2024.

Popular in

December

Cheapest in

February

Round-trip from

$323

One-way from

$104
High demand for flights, 35% potential price rise
Best time to find cheap flights, 22% potential price drop
From Denver Intl to Lambert-St Louis
One-way flight from Denver Intl to Lambert-St Louis

What is the cheapest day to fly round-trip from Denver to St. Louis?

Users have found that flying from Denver to St. Louis on a Sunday typically leans towards higher prices. However, this doesn’t mean you still can’t find a deal. Flexibility with other aspects of your flight can still land a great price for your trip.

How far in advance should I book a flight from Denver to St. Louis?

Users have found that booking a flight from Denver to St. Louis at least 55 days early can save you up to 55% on average compared to booking a flight this week. If booking 55 days before your flight isn’t an option for you, users have found flights from Denver to St. Louis for as little as $136 when booking for a departure date within the next two weeks. You can also check prices now. Some users have found airline tickets as low as $238 for flights departing within the next 3 days.

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

Flights from Denver to St. Louis lean towards being more expensive in December. Prices are generally better when you fly from Denver to St. Louis in February, with the cheapest ticket starting at $46.

When is the cheapest time to fly from Denver to St. Louis (DEN - STL)?

It’s optimal to fly from Denver to St. Louis in the evening. By choosing this option you can save up to 31% on the cost of your flight, compared to a flight at noon.

Cheap Frontier flights from Denver to St. Louis

Explore cheap flight options specifically provided by Frontier for the route between Denver and St. Louis. Find affordable fares and compare prices with other airlines to secure the best deal for your journey. Over the last 7 days, Cheapflights users made 3,145,932 searches. Data last updated March 19, 2024.
Take a peek at the cheapest Frontier flights we've detected traveling from Denver to St. Louis. Make sure to double check the flight details before booking.
Sat 4/206:41 amDEN - STL
Nonstop2h 06mFrontier
Tue 4/234:50 pmSTL - DEN
Nonstop2h 30mFrontier
Deal found 3/17$58
Tue 4/96:05 pmDEN - STL
Nonstop2h 09mFrontier
Sat 4/138:04 pmSTL - DEN
Nonstop2h 31mFrontier
Deal found 3/18$63
Tue 4/96:05 pmDEN - STL
Nonstop2h 09mFrontier
Sat 4/138:04 pmSTL - DEN
Nonstop2h 31mFrontier
Deal found 3/17$66
Sat 4/206:41 amDEN - STL
Nonstop2h 06mFrontier
Mon 4/228:04 pmSTL - DEN
Nonstop2h 31mFrontier
Deal found 3/17$68
Wed 4/246:41 amDEN - STL
Nonstop2h 06mFrontier
Sun 4/283:29 pmSTL - DEN
Nonstop2h 33mFrontier
Deal found 3/18$73
Tue 4/96:05 pmDEN - STL
Nonstop2h 09mFrontier
Fri 4/125:35 pmSTL - DEN
Nonstop2h 28mFrontier
Deal found 3/17$74
Sun 4/1411:20 amDEN - STL
Nonstop2h 09mFrontier
Mon 4/158:04 pmSTL - DEN
Nonstop2h 31mFrontier
Deal found 3/17$77
Fri 4/266:41 amDEN - STL
Nonstop2h 06mFrontier
Mon 4/298:04 pmSTL - DEN
Nonstop2h 31mFrontier
Deal found 3/17$78
Fri 4/266:41 amDEN - STL
Nonstop2h 06mFrontier
Sun 4/283:29 pmSTL - DEN
Nonstop2h 33mFrontier
Deal found 3/18$83

Cheap Delta flights from Denver to St. Louis

Explore cheap flight options specifically provided by Delta for the route between Denver and St. Louis. Find affordable fares and compare prices with other airlines to secure the best deal for your journey. Over the last 7 days, Cheapflights users made 3,145,932 searches. Data last updated March 19, 2024.
Some of the best deals we've found on Delta flights traveling from Denver to St. Louis. Ensure the flight price, dates, time, and airline match your criteria before you book.
Fri 4/1912:45 amDEN - STL
1 stop7h 11mDelta
Mon 4/227:20 amSTL - DEN
1 stop5h 39mDelta
Deal found 3/18$187
Thu 4/2512:45 amDEN - STL
1 stop7h 11mDelta
Mon 4/297:03 pmSTL - DEN
1 stop5h 45mDelta
Deal found 3/18$198
Mon 4/812:45 amDEN - STL
1 stop7h 11mDelta
Fri 4/126:50 pmSTL - DEN
1 stop5h 20mDelta
Deal found 3/17$213
Thu 5/1612:30 amDEN - STL
1 stop7h 21mDelta
Sat 5/185:30 pmSTL - DEN
1 stop6h 49mDelta
Deal found 3/17$297
Thu 5/1612:30 amDEN - STL
1 stop7h 21mDelta
Mon 5/206:50 pmSTL - DEN
1 stop5h 29mDelta
Deal found 3/16$308
Tue 3/2612:59 amDEN - STL
1 stop6h 55mDelta
Mon 4/110:20 amSTL - DEN
1 stop4h 50mDelta
Deal found 3/18$384
Sun 3/2412:59 amDEN - STL
1 stop6h 55mDelta
Tue 3/264:00 pmSTL - DEN
1 stop7h 44mDelta
Deal found 3/17$471
Mon 3/2512:59 amDEN - STL
1 stop6h 55mDelta
Thu 3/282:21 pmSTL - DEN
1 stop6h 04mDelta
Deal found 3/18$515

Cheap Denver to St. Louis flights in March & April 2024

Find cheap flight options from Denver to St. Louis specifically for the months of March and April 2024. Explore affordable fares based on user searches. Over the last 7 days, Cheapflights users made 3,145,932 searches. Prices were last updated on March 19, 2024.
These are some of the best deals we've found on flights to St. Louis in 2024 at this time. Check back regularly for other flight deals.
Tue 4/96:05 pmDEN - STL
Nonstop2h 09mFrontier
Sat 4/138:04 pmSTL - DEN
Nonstop2h 31mFrontier
Deal found 3/18$63
Tue 4/96:05 pmDEN - STL
Nonstop2h 09mFrontier
Sat 4/138:04 pmSTL - DEN
Nonstop2h 31mFrontier
Deal found 3/17$66
Sat 4/206:41 amDEN - STL
Nonstop2h 06mFrontier
Mon 4/228:04 pmSTL - DEN
Nonstop2h 31mFrontier
Deal found 3/17$68
Wed 4/246:41 amDEN - STL
Nonstop2h 06mFrontier
Sun 4/283:29 pmSTL - DEN
Nonstop2h 33mFrontier
Deal found 3/18$73
Tue 4/96:05 pmDEN - STL
Nonstop2h 09mFrontier
Fri 4/125:35 pmSTL - DEN
Nonstop2h 28mFrontier
Deal found 3/17$74
Sun 4/1411:20 amDEN - STL
Nonstop2h 09mFrontier
Mon 4/158:04 pmSTL - DEN
Nonstop2h 31mFrontier
Deal found 3/17$77
Fri 4/266:41 amDEN - STL
Nonstop2h 06mFrontier
Mon 4/298:04 pmSTL - DEN
Nonstop2h 31mFrontier
Deal found 3/17$78
Fri 4/266:41 amDEN - STL
Nonstop2h 06mFrontier
Sun 4/283:29 pmSTL - DEN
Nonstop2h 33mFrontier
Deal found 3/18$83
Fri 4/126:41 amDEN - STL
Nonstop2h 06mFrontier
Mon 4/298:04 pmSTL - DEN
Nonstop2h 31mFrontier
Deal found 3/18$84

Denver to St. Louis 2024 flight deals

Discover exclusive flight deals for travel between Denver and St. Louis in 2024. Find excellent offers based on user searches. Over the last 7 days, Cheapflights users made 3,145,932 searches. Data last updated March 19, 2024.
These are some of the best deals we've found on flights to St. Louis in 2024 at this time. Check back regularly for other flight deals.
Tue 4/96:05 pmDEN - STL
Nonstop2h 09mFrontier
Sat 4/138:04 pmSTL - DEN
Nonstop2h 31mFrontier
Deal found 3/18$63
Tue 4/96:05 pmDEN - STL
Nonstop2h 09mFrontier
Sat 4/138:04 pmSTL - DEN
Nonstop2h 31mFrontier
Deal found 3/17$66
Sat 4/206:41 amDEN - STL
Nonstop2h 06mFrontier
Mon 4/228:04 pmSTL - DEN
Nonstop2h 31mFrontier
Deal found 3/17$68
Wed 4/246:41 amDEN - STL
Nonstop2h 06mFrontier
Sun 4/283:29 pmSTL - DEN
Nonstop2h 33mFrontier
Deal found 3/18$73
Tue 4/96:05 pmDEN - STL
Nonstop2h 09mFrontier
Fri 4/125:35 pmSTL - DEN
Nonstop2h 28mFrontier
Deal found 3/17$74
Sun 4/1411:20 amDEN - STL
Nonstop2h 09mFrontier
Mon 4/158:04 pmSTL - DEN
Nonstop2h 31mFrontier
Deal found 3/17$77
Fri 4/266:41 amDEN - STL
Nonstop2h 06mFrontier
Mon 4/298:04 pmSTL - DEN
Nonstop2h 31mFrontier
Deal found 3/17$78
Fri 4/266:41 amDEN - STL
Nonstop2h 06mFrontier
Sun 4/283:29 pmSTL - DEN
Nonstop2h 33mFrontier
Deal found 3/18$83
Fri 4/126:41 amDEN - STL
Nonstop2h 06mFrontier
Mon 4/298:04 pmSTL - DEN
Nonstop2h 31mFrontier
Deal found 3/18$84

Non-stop flights to St. Louis from Denver

Discover non-stop flight options from Denver to St. Louis. Find direct flights with no layovers, providing a convenient travel experience. Explore non-stop flight options based on user searches, and compare prices and availability for your desired travel dates. Over the last 7 days, Cheapflights users made 3,145,932 searches. Data last updated March 19, 2024.
For a shorter flight, select one of these non-stop flights from Denver to St. Louis. Users can also choose from other Denver to St. Louis flights by using the search form above.
Tue 4/96:05 pmDEN - STL
Nonstop2h 09mFrontier
Sat 4/138:04 pmSTL - DEN
Nonstop2h 31mFrontier
Deal found 3/18$63
Tue 4/96:05 pmDEN - STL
Nonstop2h 09mFrontier
Sat 4/138:04 pmSTL - DEN
Nonstop2h 31mFrontier
Deal found 3/17$66
Sat 4/206:41 amDEN - STL
Nonstop2h 06mFrontier
Mon 4/228:04 pmSTL - DEN
Nonstop2h 31mFrontier
Deal found 3/17$68
Wed 4/246:41 amDEN - STL
Nonstop2h 06mFrontier
Sun 4/283:29 pmSTL - DEN
Nonstop2h 33mFrontier
Deal found 3/18$73
Tue 4/96:05 pmDEN - STL
Nonstop2h 09mFrontier
Fri 4/125:35 pmSTL - DEN
Nonstop2h 28mFrontier
Deal found 3/17$74
Sun 4/1411:20 amDEN - STL
Nonstop2h 09mFrontier
Mon 4/158:04 pmSTL - DEN
Nonstop2h 31mFrontier
Deal found 3/17$77
Fri 4/266:41 amDEN - STL
Nonstop2h 06mFrontier
Mon 4/298:04 pmSTL - DEN
Nonstop2h 31mFrontier
Deal found 3/17$78
Fri 4/266:41 amDEN - STL
Nonstop2h 06mFrontier
Sun 4/283:29 pmSTL - DEN
Nonstop2h 33mFrontier
Deal found 3/18$83
Fri 4/126:41 amDEN - STL
Nonstop2h 06mFrontier
Mon 4/298:04 pmSTL - DEN
Nonstop2h 31mFrontier
Deal found 3/18$84

Denver to St. Louis flights leaving soon

Find last-minute flight options from Denver to St. Louis for spontaneous travel. Discover available flights and compare prices based on user searches. Secure great deals and offers for spontaneous trips with quick booking options. Over the last 7 days, Cheapflights users made 3,145,932 searches. Data last updated March 19, 2024.
Have a look at some of the last-minute flights available departing from Denver to St. Louis. It's wise to confirm all flight details are correct before booking.
Wed 3/276:55 amDEN - STL
Nonstop2h 17mFrontier
Mon 4/18:45 pmSTL - DEN
Nonstop2h 32mFrontier
Deal found 3/18$117
Tue 3/266:05 pmDEN - STL
Nonstop2h 09mFrontier
Thu 3/2811:15 pmSTL - DEN
Nonstop2h 35mFrontier
Deal found 3/17$118
Wed 3/276:55 amDEN - STL
Nonstop2h 17mFrontier
Sat 3/307:04 pmSTL - DEN
Nonstop2h 34mFrontier
Deal found 3/17$138
Mon 3/2511:40 pmDEN - STL
1 stop9h 43mFrontier
Tue 3/2610:04 pmSTL - DEN
Nonstop2h 36mFrontier
Deal found 3/17$148
Sun 3/247:17 pmDEN - STL
Nonstop2h 08mFrontier
Mon 3/258:45 pmSTL - DEN
Nonstop2h 32mFrontier
Deal found 3/17$158
Wed 3/2711:25 pmDEN - STL
1 stop9h 58mFrontier
Mon 4/18:45 pmSTL - DEN
Nonstop2h 32mFrontier
Deal found 3/18$166
Tue 3/2612:04 pmDEN - STL
1 stop21h 19mFrontier
Thu 3/2811:15 pmSTL - DEN
Nonstop2h 35mFrontier
Deal found 3/17$167
Tue 3/2611:31 pmDEN - STL
1 stop9h 52mFrontier
Thu 3/2811:15 pmSTL - DEN
Nonstop2h 35mFrontier
Deal found 3/18$168
Wed 3/276:00 amDEN - STL
1 stop27h 23mFrontier
Sat 3/307:04 pmSTL - DEN
Nonstop2h 34mFrontier
Deal found 3/17$187

One-way flights to St. Louis from Denver

Search for one-way flight options from Denver to St. Louis. Find affordable one-way fares based on user searches. Compare prices and availability to plan your one-way journey according to your preferred dates and budget. Over the last 7 days, Cheapflights users made 3,145,932 searches. Data last updated March 19, 2024.
Some of the best available deals we've found on one-way flights from Denver to St. Louis. Users in need of a round-trip flight from Denver to St. Louis instead should update the search form at the top of page.
Mon 4/156:41 amDEN - STL
Nonstop2h 06mFrontier
Deal found 3/17$39
Mon 4/226:41 amDEN - STL
Nonstop2h 06mFrontier
Deal found 3/17$44
Wed 3/276:55 amDEN - STL
Nonstop2h 17mFrontier
Deal found 3/17$49
Mon 4/86:55 amDEN - STL
Nonstop2h 17mFrontier
Deal found 3/18$55
Sun 5/1911:46 amDEN - STL
Nonstop2h 07mFrontier
Deal found 3/17$59
Tue 4/169:55 amDEN - STL
1 stop23h 23mFrontier
Deal found 3/17$68
Mon 4/16:55 amDEN - STL
Nonstop2h 17mFrontier
Deal found 3/17$69
Sat 5/189:38 amDEN - STL
1 stop12h 13mFrontier
Deal found 3/17$79
Fri 4/56:55 amDEN - STL
Nonstop2h 17mFrontier
Deal found 3/17$83

Find flights from Denver to St. Louis within your budget

Customize your flight search to find flights from Denver to St. Louis that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 3,145,932 searches. Data last updated March 19, 2024.

Fly from

Any airport

Fly to

Any airport

Budget

$58 - $208

Route

Depart

Return

Price

Denver IntlLambert-St Louis

DEN - STL

DENSTL

Denver Intl

Sat 4/20

Nonstop2h 06m

Lambert-St Louis

Tue 4/23

Nonstop2h 30m

$58

Denver IntlLambert-St Louis

DEN - STL

DENSTL

Denver Intl

Tue 4/9

Nonstop2h 09m

Lambert-St Louis

Sat 4/13

Nonstop2h 31m

$63

Denver IntlLambert-St Louis

DEN - STL

DENSTL

Denver Intl

Tue 4/9

Nonstop2h 09m

Lambert-St Louis

Sat 4/13

Nonstop2h 31m

$66

Denver IntlLambert-St Louis

DEN - STL

DENSTL

Denver Intl

Sat 4/20

Nonstop2h 06m

Lambert-St Louis

Mon 4/22

Nonstop2h 31m

$68

Denver IntlLambert-St Louis

DEN - STL

DENSTL

Denver Intl

Wed 4/24

Nonstop2h 06m

Lambert-St Louis

Sun 4/28

Nonstop2h 33m

$73

Denver IntlLambert-St Louis

DEN - STL

DENSTL

Denver Intl

Tue 4/9

Nonstop2h 09m

Lambert-St Louis

Fri 4/12

Nonstop2h 28m

$74

Denver IntlLambert-St Louis

DEN - STL

DENSTL

Denver Intl

Mon 4/22

1 stop12h 23m

Lambert-St Louis

Sat 4/27

Nonstop2h 31m

$137

Denver IntlLambert-St Louis

DEN - STL

DENSTL

Denver Intl

Fri 4/19

1 stop7h 11m

Lambert-St Louis

Mon 4/22

1 stop5h 39m

$187

Denver IntlLambert-St Louis

DEN - STL

DENSTL

Denver Intl

Thu 5/2

1 stop7h 36m

Lambert-St Louis

Sun 5/5

1 stop5h 13m

$208

Flights are sorted by cheapest first

Deals found on 3/17

When is the best time to book a flight from Denver to St. Louis?

Use this chart to determine the optimal time to book a round-trip flight from Denver to St. Louis. Price data was last updated on January 28, 2024.
The price you pay for your flight from Denver to St. Louis may vary depending on when you book. For the best chance of a lower fare, look to book 54 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.
Search Deals

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

Use this chart to determine the cheapest time to fly round-trip from Denver to St. Louis. Price data was last updated on March 10, 2024.
Morning
Noon
Afternoon
Evening
All times are departure.
Travelers seeking maximum savings on their Denver to St. Louis flight should consider departing on Wednesday evenings when fares are most often at their lowest. Monday at noon flights should be avoided if possible as fares are typically the most expensive at this time.
Search Deals

Average price of flights to St. Louis by month

Plan your trip from Denver to St. Louis by taking into account the cheapest months to travel. The average price of a one-way flight from Denver to St. Louis is currently $61 while a round-trip flight costs $104. Price data was last updated on March 10, 2024.

Currently, September is the cheapest month in which you can book a flight from Denver to St. Louis (average of $323). Flying from Denver to St. Louis in June is currently the most expensive (average of $386). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

January

$326

February

$331

March

$358

April

$356

May

$358

June

$386

July

$382

August

$336

September

$323

October

$323

November

$336

December

$326

Temperature and rainfall in St. Louis by month

Plan your trip to St. Louis by taking into account the average temperature and rainfall totals by month.

STL

Temperature

32 - 80.6 °F

Reviews of airlines servicing St. Louis

Get insights into the airlines that provide service to St. Louis. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to St. Louis. Reviews last updated March 19, 2024.
Get a feel of what it's like to fly with Frontier, Delta and American Airlines from Denver to St. Louis by reading reviews from past customers. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
8.1
Very good
9,147 reviews

Entertainment

7.4

Overall

8.1

Boarding

8.3

Food

7.3

Comfort

7.9

Crew

8.6

Reviews

1 / 10

This is trivial however, I was in row 11B there aren’t any windows in that row. I enjoy being able to look out the window.

8.1
Very good
9,147 reviews
8.1
Very good
9,147 reviews

Entertainment

7.4

Overall

8.1

Boarding

8.3

Food

7.3

Comfort

7.9

Crew

8.6

Reviews

1 / 10

This is trivial however, I was in row 11B there aren’t any windows in that row. I enjoy being able to look out the window.

8.1
Very good
11,551 reviews
8.1
Very good
9,147 reviews

Entertainment

7.4

Overall

8.1

Boarding

8.3

Food

7.3

Comfort

7.9

Crew

8.6

Reviews

1 / 10

This is trivial however, I was in row 11B there aren’t any windows in that row. I enjoy being able to look out the window.

7.4
Good
11,618 reviews
8.1
Very good
9,147 reviews

Entertainment

7.4

Overall

8.1

Boarding

8.3

Food

7.3

Comfort

7.9

Crew

8.6

Reviews

1 / 10

This is trivial however, I was in row 11B there aren’t any windows in that row. I enjoy being able to look out the window.

7.3
Good
15,312 reviews
8.1
Very good
9,147 reviews

Entertainment

7.4

Overall

8.1

Boarding

8.3

Food

7.3

Comfort

7.9

Crew

8.6

Reviews

1 / 10

This is trivial however, I was in row 11B there aren’t any windows in that row. I enjoy being able to look out the window.

7.3
Good
704 reviews
8.1
Very good
9,147 reviews

Entertainment

7.4

Overall

8.1

Boarding

8.3

Food

7.3

Comfort

7.9

Crew

8.6

Reviews

1 / 10

This is trivial however, I was in row 11B there aren’t any windows in that row. I enjoy being able to look out the window.

Related info for your journey

Find useful and relevant information for your journey from Denver to St. Louis. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
  • What airports do I use to fly from Denver to St. Louis?

    To fly from Denver to St. Louis, you need to book a flight from Denver Intl (DEN) to Lambert-St Louis (STL). Nonstop flights to Lambert-St Louis from Denver Intl take 2h 04m on average. When it comes time to book airfare, you have a few options: there are 20 outbound flights from Denver Intl to Lambert-St Louis offered by 3 different airlines.

  • Can I find flights from Denver to St. Louis for under $100 on Cheapflights?

    Yes, there are multiple flights from Denver to St. Louis for under $100. The cheapest flight booked recently is on Frontier for just $58, but on average you can expect to pay $89.

  • Are there nonstop flights from Denver to St. Louis for under $100 on Cheapflights?

    Cheapflights has at least 20 direct flights from Denver to St. Louis under $100. A good price for a nonstop flight from Denver to St. Louis is less than $94.

  • Are there last-minute flights available from Denver to St. Louis for under $200?

    There are currently 20+ open flights from Denver to St. Louis within the next 7 days for less than $200.

  • How popular is this Denver to St. Louis flight route?

  • What is the cheapest airline to fly from Denver to St. Louis round-trip?

    Our cheapest airline available from Denver to St. Louis is Frontier. Our recent data shows that you can find tickets from as low as $58 on this airline. Frontier is currently priced 64% below the average price you’ll pay for this route.

  • What are the cheapest airlines to fly from Denver to St. Louis one-way?

    For one-way options, check prices for Frontier. According to our data, you can fly for as low as $39. Users have also found prices from $88 and $104 on Delta and American Airlines, respectively.

  • What are the most popular airlines that fly from Denver to St. Louis?

  • What are the most reliable airlines from Denver to St. Louis?

    Looking for the most reliable airlines to get you to your destination on time? Our data shows these are most likely to get you from Denver to St. Louis on time: SkyWest Airlines (100%), United Airlines (86%), Air Canada (79%).

  • What are the cheapest flights from Denver to St. Louis?

    While on average a flight from Denver to St. Louis is generally $213, our data shows the cheapest flight currently is $34. When looking at the most popular route, (Denver Intl - Lambert-St Louis), you can expect to pay $68 for that flight.

  • What does DEN to STL mean?

    Denver Intl Airport is DEN and Lambert-St Louis Airport is STL. These codes are created by the International Air Transport Association (IATA) and airlines use them to identify the departing and arrival airports in the flight routes they service.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Top 3 airlines flying from Denver to St. Louis

Discover the top 3 airlines that operate flights from Denver to St. Louis. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 3,145,932 searches. Data last updated March 19, 2024.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$50Average$128FlexibilityNo cancel feeOn-time62%
Search Frontier flights
United AirlinesCheapest$114Average$302FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
American AirlinesCheapest$237Average$353FlexibilityNo cancel feeOn-time71%
Search American Airlines flights

Search flights from Denver to St. Louis by cabin class

Find flights from Denver to St. Louis, based on your preferred cabin class, be it economy, premium economy, business, or first class.

Hourly flight availability from Denver to St. Louis

Find hourly flight availability from Denver to St. Louis. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated March 19, 2024.
3%of flight departuresEarly morningMidnight to 6 am
27%of flight departuresMorning6 am to noon
60%of flight departuresAfternoonNoon to 6 pm
10%of flight departuresEvening6 pm to midnight
Midnight
6 AM
Noon
6 PM

Weekly flight availability from Denver to St. Louis

Explore weekly flight availability from Denver to St. Louis. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated March 19, 2024.
Sunday16daily flights
Monday24daily flights
Tuesday22daily flights
Wednesday22daily flights
Thursday24daily flights
Friday24daily flights
Saturday12daily flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travelers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from Denver to St. Louis?

Cheapflights makes it easy to find Denver to St. Louis flights by helping our users search from 900+ travel sites for deals. We also provide you with filters for cabin, price, airline, airports, number of stops, and many more to narrow down that perfect flight.

Why should you use Cheapflights to find cheap flight tickets from Denver to St. Louis?

Millions of users choose and trust Cheapflights to book the best flight deals from Denver to St. Louis for free. We help you search and compare prices from hundreds of airlines for the right flight just for you.

Can Cheapflights find flights from Denver to St. Louis with no change fees?

Cheapflights does show flights with no change fees to all users. To see these options for flights from Denver to St. Louis, users can toggle the no change fees filter when performing a flight search.

Can Cheapflights notify me if prices for flights from Denver to St. Louis become cheaper?

Not ready to book yet? You can track prices for flights from Denver to St. Louis on Cheapflights with our Price Alert feature and get notified when better prices are available.

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