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Cheap flights from Denver to St. Louis (DEN - STL) from $35

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 5/25. 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
May 11 — May 181
From?
To?
Sat 5/11
Sat 5/18
1 adult, Economy
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The best prices from Denver Intl to Lambert-St Louis are usually found in September or August, booked 69 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 May 6, 2024.

Popular in

December

Cheapest in

September

Round-trip from

$322

One-way from

$98
High demand for flights, 20% potential price rise
Search Deals
Best time to find cheap flights, 21% potential price drop
Search Deals
From Denver Intl to Lambert-St Louis
Search Deals
One-way flight from Denver Intl to Lambert-St Louis
Search Deals

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 49 days early can save you up to 73% on average compared to booking a flight this week. If booking 49 days before your flight isn’t an option for you, users have found flights from Denver to St. Louis for as little as $132 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 $277 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 September, with the cheapest ticket starting at $47.

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 29% 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 2,719,943 searches. Data last updated May 6, 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.
Tue 5/2110:00 amDEN - STL
Nonstop2h 09mFrontier
Wed 5/228:04 pmSTL - DEN
Nonstop2h 31mFrontier
Deal found 5/6$69
Sat 6/156:20 amDEN - STL
Nonstop2h 09mFrontier
Sat 6/158:02 pmSTL - DEN
Nonstop2h 30mFrontier
Deal found 5/5$70
Sat 6/16:15 amDEN - STL
Nonstop2h 10mFrontier
Sat 6/88:02 pmSTL - DEN
Nonstop2h 30mFrontier
Deal found 5/4$72
Sat 6/16:15 amDEN - STL
Nonstop2h 10mFrontier
Sat 6/88:02 pmSTL - DEN
Nonstop2h 30mFrontier
Deal found 5/5$73
Sat 7/206:26 amDEN - STL
Nonstop2h 11mFrontier
Tue 7/2310:32 pmSTL - DEN
Nonstop2h 29mFrontier
Deal found 5/4$79
Tue 5/2110:00 amDEN - STL
Nonstop2h 09mFrontier
Sat 5/258:04 pmSTL - DEN
Nonstop2h 31mFrontier
Deal found 5/5$80
Sat 5/256:15 amDEN - STL
Nonstop2h 10mFrontier
Tue 5/2810:44 pmSTL - DEN
Nonstop2h 36mFrontier
Deal found 5/5$83
Thu 5/306:54 pmDEN - STL
Nonstop2h 12mFrontier
Tue 6/410:44 pmSTL - DEN
Nonstop2h 36mFrontier
Deal found 5/5$84
Wed 7/36:20 amDEN - STL
Nonstop2h 09mFrontier
Thu 7/43:32 pmSTL - DEN
Nonstop2h 29mFrontier
Deal found 5/5$89

Cheap Sun Country Air flights from Denver to St. Louis

Explore cheap flight options specifically provided by Sun Country Air 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 2,719,943 searches. Data last updated May 6, 2024.
Some of the best deals we've found on Sun Country Air flights traveling from Denver to St. Louis. Ensure the flight price, dates, time, and airline match your criteria before you book.
Fri 5/247:30 pmDEN - STL
1 stop24h 00mSun Country Air
Sun 5/266:20 pmSTL - DEN
1 stop15h 40mSun Country Air
Deal found 5/5$185
Thu 9/198:00 amDEN - STL
1 stop9h 48mSun Country Air
Sun 9/227:40 amSTL - DEN
1 stop9h 43mSun Country Air
Deal found 5/5$205
Thu 6/136:20 pmDEN - STL
1 stop17h 21mSun Country Air
Sun 6/166:30 amSTL - DEN
1 stop14h 06mSun Country Air
Deal found 5/6$225
Fri 8/99:51 amDEN - STL
1 stop6h 31mSun Country Air
Sun 8/116:15 pmSTL - DEN
1 stop24h 01mSun Country Air
Deal found 5/5$235

Cheap Denver to St. Louis flights in May & June 2024

Find cheap flight options from Denver to St. Louis specifically for the months of May and June 2024. Explore affordable fares based on user searches. Over the last 7 days, Cheapflights users made 2,719,943 searches. Prices were last updated on May 6, 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.
Sat 6/16:15 amDEN - STL
Nonstop2h 10mFrontier
Sat 6/88:02 pmSTL - DEN
Nonstop2h 30mFrontier
Deal found 5/4$72
Sat 5/256:15 amDEN - STL
Nonstop2h 10mFrontier
Tue 5/2810:44 pmSTL - DEN
Nonstop2h 36mFrontier
Deal found 5/5$83
Thu 5/306:54 pmDEN - STL
Nonstop2h 12mFrontier
Tue 6/410:44 pmSTL - DEN
Nonstop2h 36mFrontier
Deal found 5/5$84
Sun 5/267:22 pmDEN - STL
Nonstop2h 10mFrontier
Thu 5/3011:06 pmSTL - DEN
Nonstop2h 27mFrontier
Deal found 5/5$92
Sun 5/267:22 pmDEN - STL
Nonstop2h 10mFrontier
Thu 5/3011:06 pmSTL - DEN
Nonstop2h 27mFrontier
Deal found 5/4$93
Tue 6/410:00 amDEN - STL
Nonstop2h 09mFrontier
Wed 6/198:02 pmSTL - DEN
Nonstop2h 30mFrontier
Deal found 5/5$94
Mon 6/246:20 amDEN - STL
Nonstop2h 09mFrontier
Sat 6/298:02 pmSTL - DEN
Nonstop2h 30mFrontier
Deal found 5/5$100
Sat 5/256:15 amDEN - STL
Nonstop2h 10mMultiple Airlines
Sun 5/266:20 pmSTL - DEN
1 stop15h 40mMultiple Airlines
Deal found 5/5$102
Tue 6/410:00 amDEN - STL
Nonstop2h 09mFrontier
Tue 6/113:47 pmSTL - DEN
Nonstop2h 29mFrontier
Deal found 5/5$108

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 2,719,943 searches. Data last updated May 6, 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.
Sat 6/16:15 amDEN - STL
Nonstop2h 10mFrontier
Sat 6/88:02 pmSTL - DEN
Nonstop2h 30mFrontier
Deal found 5/4$72
Sat 7/206:26 amDEN - STL
Nonstop2h 11mFrontier
Tue 7/2310:32 pmSTL - DEN
Nonstop2h 29mFrontier
Deal found 5/4$79
Tue 5/2110:00 amDEN - STL
Nonstop2h 09mFrontier
Sat 5/258:04 pmSTL - DEN
Nonstop2h 31mFrontier
Deal found 5/5$80
Sat 5/256:15 amDEN - STL
Nonstop2h 10mFrontier
Tue 5/2810:44 pmSTL - DEN
Nonstop2h 36mFrontier
Deal found 5/5$83
Thu 5/306:54 pmDEN - STL
Nonstop2h 12mFrontier
Tue 6/410:44 pmSTL - DEN
Nonstop2h 36mFrontier
Deal found 5/5$84
Sun 5/267:22 pmDEN - STL
Nonstop2h 10mFrontier
Thu 5/3011:06 pmSTL - DEN
Nonstop2h 27mFrontier
Deal found 5/5$92
Sun 5/267:22 pmDEN - STL
Nonstop2h 10mFrontier
Thu 5/3011:06 pmSTL - DEN
Nonstop2h 27mFrontier
Deal found 5/4$93
Tue 6/410:00 amDEN - STL
Nonstop2h 09mFrontier
Wed 6/198:02 pmSTL - DEN
Nonstop2h 30mFrontier
Deal found 5/5$94
Tue 7/308:44 amDEN - STL
Nonstop2h 06mFrontier
Thu 8/13:53 pmSTL - DEN
Nonstop2h 24mFrontier
Deal found 5/5$99

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 2,719,943 searches. Data last updated May 6, 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.
Sat 6/156:20 amDEN - STL
Nonstop2h 09mFrontier
Sat 6/158:02 pmSTL - DEN
Nonstop2h 30mFrontier
Deal found 5/5$70
Sat 6/16:15 amDEN - STL
Nonstop2h 10mFrontier
Sat 6/88:02 pmSTL - DEN
Nonstop2h 30mFrontier
Deal found 5/4$72
Sat 6/16:15 amDEN - STL
Nonstop2h 10mFrontier
Sat 6/88:02 pmSTL - DEN
Nonstop2h 30mFrontier
Deal found 5/5$73
Sat 7/206:26 amDEN - STL
Nonstop2h 11mFrontier
Tue 7/2310:32 pmSTL - DEN
Nonstop2h 29mFrontier
Deal found 5/4$79
Tue 5/2110:00 amDEN - STL
Nonstop2h 09mFrontier
Sat 5/258:04 pmSTL - DEN
Nonstop2h 31mFrontier
Deal found 5/5$80
Sat 5/256:15 amDEN - STL
Nonstop2h 10mFrontier
Tue 5/2810:44 pmSTL - DEN
Nonstop2h 36mFrontier
Deal found 5/5$83
Thu 5/306:54 pmDEN - STL
Nonstop2h 12mFrontier
Tue 6/410:44 pmSTL - DEN
Nonstop2h 36mFrontier
Deal found 5/5$84
Wed 7/36:20 amDEN - STL
Nonstop2h 09mFrontier
Thu 7/43:32 pmSTL - DEN
Nonstop2h 29mFrontier
Deal found 5/5$89
Sat 6/156:20 amDEN - STL
Nonstop2h 09mFrontier
Mon 6/178:22 pmSTL - DEN
Nonstop2h 30mFrontier
Deal found 5/5$90

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 2,719,943 searches. Data last updated May 6, 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.
Sat 5/116:41 amDEN - STL
Nonstop2h 06mFrontier
Sat 5/188:04 pmSTL - DEN
Nonstop2h 31mFrontier
Deal found 5/5$160
Sat 5/116:41 amDEN - STL
Nonstop2h 06mFrontier
Wed 5/158:04 pmSTL - DEN
Nonstop2h 31mFrontier
Deal found 5/5$161
Sat 5/116:41 amDEN - STL
Nonstop2h 06mFrontier
Tue 5/144:50 pmSTL - DEN
Nonstop2h 30mFrontier
Deal found 5/5$165
Sat 5/116:41 amDEN - STL
Nonstop2h 06mFrontier
Mon 5/138:04 pmSTL - DEN
Nonstop2h 31mFrontier
Deal found 5/5$185
Sat 5/1110:05 amDEN - STL
1 stop23h 13mFrontier
Mon 5/139:53 pmSTL - DEN
1 stop11h 51mFrontier
Deal found 5/5$235
Sat 5/112:59 pmDEN - STL
1 stop18h 19mFrontier
Mon 5/139:53 pmSTL - DEN
1 stop11h 51mFrontier
Deal found 5/5$236
Sat 5/1111:59 pmDEN - STL
1 stop8h 54mAmerican Airlines
Sat 5/187:01 amSTL - DEN
1 stop7h 56mAmerican Airlines
Deal found 5/5$251
Fri 5/1012:15 amDEN - STL
1 stop14h 22mFrontier
Mon 5/139:53 pmSTL - DEN
1 stop11h 51mFrontier
Deal found 5/5$255
Fri 5/1012:15 amDEN - STL
1 stop14h 22mFrontier
Mon 5/139:53 pmSTL - DEN
1 stop11h 51mFrontier
Deal found 5/5$256

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 2,719,943 searches. Data last updated May 6, 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.
Sat 5/256:15 amDEN - STL
Nonstop2h 10mFrontier
Deal found 5/4$35
Wed 7/36:20 amDEN - STL
Nonstop2h 09mFrontier
Deal found 5/6$44
Tue 8/68:44 amDEN - STL
Nonstop2h 06mFrontier
Deal found 5/5$45
Tue 5/2810:00 amDEN - STL
Nonstop2h 09mFrontier
Deal found 5/6$49
Fri 5/316:26 amDEN - STL
Nonstop2h 10mFrontier
Deal found 5/5$55
Tue 6/410:00 amDEN - STL
Nonstop2h 09mFrontier
Deal found 5/5$64
Wed 5/156:41 amDEN - STL
Nonstop2h 06mFrontier
Deal found 5/5$65
Mon 6/36:26 amDEN - STL
Nonstop2h 10mFrontier
Deal found 5/5$70
Thu 6/611:24 amDEN - STL
Nonstop2h 08mFrontier
Deal found 5/5$75

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 2,719,943 searches. Data last updated May 6, 2024.

Fly from

Any airport

Fly to

Any airport

Budget

$69 - $206

Route

Depart

Return

Price

Denver IntlLambert-St Louis

DEN - STL

DENSTL

Denver Intl

Tue 5/21

Nonstop2h 09m

Lambert-St Louis

Wed 5/22

Nonstop2h 31m

$69

Denver IntlLambert-St Louis

DEN - STL

DENSTL

Denver Intl

Sat 6/15

Nonstop2h 09m

Lambert-St Louis

Sat 6/15

Nonstop2h 30m

$70

Denver IntlLambert-St Louis

DEN - STL

DENSTL

Denver Intl

Sat 6/1

Nonstop2h 10m

Lambert-St Louis

Sat 6/8

Nonstop2h 30m

$72

Denver IntlLambert-St Louis

DEN - STL

DENSTL

Denver Intl

Sat 6/1

Nonstop2h 10m

Lambert-St Louis

Sat 6/8

Nonstop2h 30m

$73

Denver IntlLambert-St Louis

DEN - STL

DENSTL

Denver Intl

Sat 7/20

Nonstop2h 11m

Lambert-St Louis

Tue 7/23

Nonstop2h 29m

$79

Denver IntlLambert-St Louis

DEN - STL

DENSTL

Denver Intl

Sat 5/25

Nonstop2h 10m

Lambert-St Louis

Sun 5/26

1 stop15h 40m

$102

Denver IntlLambert-St Louis

DEN - STL

DENSTL

Denver Intl

Fri 5/24

1 stop24h 00m

Lambert-St Louis

Sun 5/26

1 stop15h 40m

$185

Denver IntlLambert-St Louis

DEN - STL

DENSTL

Denver Intl

Mon 6/3

1 stop7h 35m

Lambert-St Louis

Tue 6/11

1 stop4h 16m

$192

Denver IntlLambert-St Louis

DEN - STL

DENSTL

Denver Intl

Tue 7/16

1 stop6h 39m

Lambert-St Louis

Wed 7/17

1 stop5h 27m

$206

Flights are sorted by cheapest first

Deals found on 5/6

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 May 3, 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 48 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 April 28, 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 mornings when fares are most often at their lowest. Monday afternoons 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 $56 while a round-trip flight costs $116. Price data was last updated on May 5, 2024.

Currently, September is the cheapest month in which you can book a flight from Denver to St. Louis (average of $322). Flying from Denver to St. Louis in July is currently the most expensive (average of $372). 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

$357

April

$337

May

$342

June

$369

July

$372

August

$336

September

$322

October

$324

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 May 6, 2024.
Get a feel of what it's like to fly with Frontier, Sun Country Air and Delta 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.
Alaska Airlines
8.1
Very good
9,137 reviews
Check prices

Crew

8.6

Food

7.3

Comfort

7.9

Overall

8.1

Boarding

8.2

Entertainment

7.3

Reviews

1 / 10

Paid a lot for our exit row seats and they weren’t that roomy.

Alaska Airlines
8.1
Very good
9,137 reviews
Alaska Airlines
8.1
Very good
9,137 reviews
Check prices

Crew

8.6

Food

7.3

Comfort

7.9

Overall

8.1

Boarding

8.2

Entertainment

7.3

Reviews

1 / 10

Paid a lot for our exit row seats and they weren’t that roomy.

Delta
8.1
Very good
10,818 reviews
Alaska Airlines
8.1
Very good
9,137 reviews
Check prices

Crew

8.6

Food

7.3

Comfort

7.9

Overall

8.1

Boarding

8.2

Entertainment

7.3

Reviews

1 / 10

Paid a lot for our exit row seats and they weren’t that roomy.

United Airlines
7.4
Good
11,090 reviews
Alaska Airlines
8.1
Very good
9,137 reviews
Check prices

Crew

8.6

Food

7.3

Comfort

7.9

Overall

8.1

Boarding

8.2

Entertainment

7.3

Reviews

1 / 10

Paid a lot for our exit row seats and they weren’t that roomy.

American Airlines
7.3
Good
14,697 reviews
Alaska Airlines
8.1
Very good
9,137 reviews
Check prices

Crew

8.6

Food

7.3

Comfort

7.9

Overall

8.1

Boarding

8.2

Entertainment

7.3

Reviews

1 / 10

Paid a lot for our exit row seats and they weren’t that roomy.

Sun Country Air
7.3
Good
642 reviews
Alaska Airlines
8.1
Very good
9,137 reviews
Check prices

Crew

8.6

Food

7.3

Comfort

7.9

Overall

8.1

Boarding

8.2

Entertainment

7.3

Reviews

1 / 10

Paid a lot for our exit row seats and they weren’t that roomy.

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 $69, but on average you can expect to pay $90.

  • 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 $93.

  • 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.

  • What days are nonstop flights available from Denver to St. Louis?

    Nonstop flights are available for this route on the following days: Wednesday.

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

    Within the past month, 16 users have taken a look at flights from Denver Intl to Lambert-St Louis.

  • How many flights depart from Denver to St. Louis on average per day?

    On average 1 flight departs from Denver to St. Louis per day.
    Morning (6am - Noon) - 100% of flight departures

  • How long is the flight from Denver to St. Louis?

    A quick flight from Denver to St. Louis can take about 2h 09m. Frontier provides one of the quickest options available for as low as $69. The distance from Denver to St. Louis is about 772 mi. Most flights are nonstop.

  • 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 $69 on this airline. Frontier is currently priced 57% 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 $35. Users have also found prices from $88 and $91 on Delta and Sun Country Air, respectively.

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

    Consider American Airlines, Frontier or United Airlines when booking your flight. These represent the most popular airlines when flying 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: Air Canada (86%), United Airlines (86%), Frontier (78%).

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

    While on average a flight from Denver to St. Louis is generally $190, our data shows the cheapest flight currently is $35. When looking at the most popular route, (Denver Intl - Lambert-St Louis), you can expect to pay $102 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.

  • Can I find deals for flights from Denver to St. Louis that include extra baggage allowance?

    The amount of baggage you can bring on your Denver to St. Louis flight depends on the airline and the type of fare you've chosen. After entering your flight details, you'll be able to view the specific baggage policies for each deal in the search results. Keep in mind that certain deals may offer additional baggage allowance.

  • Can I find deals on flights from Denver to St. Louis with specific airlines?

    Yes, Cheapflights allows you to browse and filter Denver to St. Louis flight deals by airline. After entering your origin and destination, use the available filters to view flights offered by airlines.

  • Can I find deals for flights from Denver to St. Louis that include hotel bookings?

    Yes. In addition to deals on Denver to St. Louis flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Denver to St. Louis?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Denver to St. Louis.

  • Can I find deals for business class flights from Denver to St. Louis?

    Yes. Cheapflights offers flight deals from Denver to St. Louis by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • Can I find deals for flights from Denver to St. Louis that allow pets onboard?

    Many airlines flying from Denver to St. Louis offer the option to travel with pets. After selecting a flight deal, you can find more information about the airline's pet policy on their official website or by contacting the airline directly. Please note that additional fees and restrictions may apply.

  • Can I find deals on last-minute flights from Denver to St. Louis?

    Yes, you can often find last-minute deals on Denver to St. Louis flights on Cheapflights. However, these deals can vary and may not always be available. We recommend checking back frequently or signing up for price alerts for the most up-to-date deals.

  • How recently were the Denver to St. Louis flight deals updated?

    The Denver to St. Louis flight deals you see on this page were last updated on 5/5.

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Alternative routes for Denver to St. Louis
See prices for flight routes from nearby airports that may be better suited for you.

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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 2,719,943 searches. Data last updated May 6, 2024.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$49Average$130FlexibilityNo cancel feeOn-time62%
Search Frontier flights
United AirlinesCheapest$115Average$299FlexibilityNo cancel feeOn-time69%
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American AirlinesCheapest$237Average$336FlexibilityNo cancel feeOn-time71%
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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.
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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 May 6, 2024.
15%of flight departuresEarly morningMidnight to 6 am
26%of flight departuresMorning6 am to noon
50%of flight departuresAfternoonNoon to 6 pm
9%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 May 6, 2024.
Sunday16daily flights
Monday24daily flights
Tuesday22daily flights
Wednesday22daily flights
Thursday24daily flights
Friday24daily flights
Saturday12daily flights

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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.

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