How long is the flight from Detroit to St. Louis?

A quick flight from Detroit to St. Louis can take about 2h. Frontier provides one of the quickest options available for as low as $227. The distance from Detroit to St. Louis is about 439 mi. This flight may include one or multiple stops.

What are the cheapest airlines flying from Detroit to St. Louis round-trip?

Our cheapest airline available from Detroit to St. Louis is Spirit Airlines. Our recent data shows that you can find tickets from as low as $28 on this airline. Additional options worth looking into are Frontier and Delta, starting at $111 and $120 round-trip. You may be able to fly from Detroit to St. Louis for 89% less than the average price by searching for these airlines.

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

$36 is the cheapest one-way deal found within the past few days, from Spirit Airlines. You may also be able to find cheap deals on Delta and Southwest, with prices starting from $60 and $69, respectively.

In terms of precipitation, rainfall in St. Louis ranges from 2.2 - 4.7 inches per month. May is typically the wettest month, when rainfall can reach 4.7 in. February is typically the driest time to visit St. Louis when rainfall is around 2.2 in.

If weather is an important factor for your trip to St. Louis, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 80.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 32.0 F).

What are the cheapest flights from Detroit to St. Louis?

While on average a flight from Detroit to St. Louis is generally $343, our data shows the cheapest flight currently is $144. When looking at the most popular route, (Detroit Metropolitan Wayne County - Lambert-St Louis), you can expect to pay $150 for that flight.

What are the most reliable airlines from Detroit 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 Detroit to St. Louis on time: Virgin Atlantic (77%), KLM (75%), Korean Air (72%).

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

When booking a flight from Detroit to St. Louis, you may want to consider flying on Delta, Southwest or Spirit Airlines as they are the most popular for this route.

Most accurate provider : When it comes to deals on Detroit-St. Louis flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Detroit-St. Louis flight deals on Cheapflights vs. eDreams >95% of the time. Price accuracy is based on data collected from Detroit-St. Louis flight searches over the past month and is updated monthly.

Most trusted provider : When it comes to deals on Detroit-St. Louis flights, Cheapflights users trust eDreams the most. eDreams has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Detroit-St. Louis flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

What airports do I use to fly from Detroit to St. Louis?

You will need to book a flight from Detroit All airports to Lambert-St Louis if you want to fly from Detroit to St. Louis. At least 4 different airlines have flights from All airports (DTT) to Lambert-St Louis (STL) on a regular basis. There are 12 flights to St. Louis from the Detroit airport per day. If you manage to book one that is nonstop, then you can expect the flight time from DTT to STL to be around 1h 40m.

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

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

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

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

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

Yes. Cheapflights offers flight deals from Detroit 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.

$65+ Flights from Detroit to St. Louis

Q: How much does it cost to fly round-trip from Detroit to St. Louis?

Airfare is below average for this route at the moment. Detroit to St. Louis flights typically cost between $287 and $404 in January. The cheapest round-trip price found within the last 3 days was $136 on Multiple Airlines (Jan 20-Jan 21).

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1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

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Cheapflights Tip: The best prices from Detroit All airports to Lambert-St Louis are usually found in August or July, booked 31 days in advance, depart on a Thursday or Friday and return on a Friday

Cheap flight deals from Detroit to St. Louis

Cheapest flights from Detroit to St. Louis
Explore the most affordable flight options available from Detroit to St. Louis. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 12, 2025.

Sat 12/1312:38 pmDTW - STL

1 stop10h 55mFrontier

Thu 12/1810:42 amSTL - DTW

1 stop6h 27mFrontier

Deal found 12/10

$238

Mon 12/293:39 pmDTW - STL

2 stops27h 57mMultiple Airlines

Tue 1/65:11 pmSTL - DTW

1 stop22h 17mMultiple Airlines

Deal found 12/9

$253

Mon 12/222:55 pmDTW - STL

1 stop8h 38mFrontier

Thu 12/2510:42 amSTL - DTW

1 stop6h 27mFrontier

Deal found 12/9

$267

Thu 12/1810:01 pmDTW - STL

1 stop13h 01mFrontier

Sun 12/2110:57 amSTL - DTW

1 stop6h 12mFrontier

Deal found 12/9

$287

Mon 12/296:10 amDTW - STL

Nonstop1h 55mSouthwest

Tue 1/62:35 pmSTL - DTW

1 stop6h 55mSouthwest

Deal found 12/9

$289

Sat 12/1312:38 pmDTW - STL

1 stop10h 55mFrontier

Sun 12/149:54 amSTL - DTW

1 stop6h 23mFrontier

Deal found 12/9

$298

Sat 12/1312:38 pmDTW - STL

1 stop10h 55mFrontier

Sun 12/2110:57 amSTL - DTW

1 stop6h 12mFrontier

Deal found 12/10

$313

Tue 12/165:50 amDTW - STL

2 stops17h 43mMultiple Airlines

Thu 12/184:27 pmSTL - DTW

1 stop15h 26mMultiple Airlines

Deal found 12/9

$326

Best flights from Detroit to St. Louis
Discover carefully curated flight deals from Detroit to St. Louis that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated December 12, 2025.

Thu 1/293:16 pmDTW - STL

1 stop20h 07mFrontier

Mon 2/25:42 pmSTL - DTW

1 stop16h 12mFrontier

Deal found 12/11

$146

Thu 2/195:05 amDTW - STL

1 stop5h 42mMultiple Airlines

Sun 2/2210:42 amSTL - DTW

1 stop22h 38mMultiple Airlines

Deal found 12/9

$207

Wed 1/75:50 amDTW - STL

Nonstop2h 00mSouthwest

Wed 1/145:55 pmSTL - DTW

Nonstop1h 30mSouthwest

Deal found 12/10

$227

Thu 1/89:00 amDTW - STL

1 stop4h 29mUnited Airlines

Mon 1/126:40 pmSTL - DTW

1 stop4h 04mUnited Airlines

Deal found 12/8

$251

Tue 1/66:30 pmDTW - STL

1 stop3h 30mSouthwest

Thu 1/85:55 pmSTL - DTW

Nonstop1h 30mSouthwest

Deal found 12/8

$237

Fri 1/235:15 amDTW - STL

1 stop19h 18mMultiple Airlines

Sun 1/255:42 pmSTL - DTW

1 stop19h 37mMultiple Airlines

Deal found 12/11

$245

Thu 1/295:50 amDTW - STL

Nonstop2h 00mSouthwest

Sat 1/315:45 pmSTL - DTW

Nonstop1h 30mSouthwest

Deal found 12/10

$237

Thu 1/296:00 amDTW - STL

2 stops9h 30mUnited Airlines

Sat 1/319:57 amSTL - DTW

2 stops8h 01mUnited Airlines

Deal found 12/10

$261

Wed 1/145:25 amDTW - STL

2 stops8h 20mSouthwest

Thu 1/155:05 amSTL - DTW

1 stop6h 45mSouthwest

Deal found 12/10

$252

Thu 1/85:25 amDTW - STL

2 stops8h 20mSouthwest

Wed 1/142:15 pmSTL - DTW

2 stops6h 40mSouthwest

Deal found 12/9

$257

Last-minute flights from Detroit to St. Louis
Discover last-minute flight deals from Detroit to St. Louis. Data last updated December 12, 2025 and is based on user searches.

Tue 1/67:22 pmDTW - STL

1 stop28h 11mMultiple Airlines

Sat 1/107:43 pmSTL - DTW

1 stop19h 05mMultiple Airlines

Deal found 12/9

$170

Wed 1/77:22 pmDTW - STL

1 stop28h 11mMultiple Airlines

Wed 1/148:32 pmSTL - DTW

1 stop12h 48mMultiple Airlines

Deal found 12/10

$150

Thu 1/87:33 pmDTW - STL

2 stops13h 17mFrontier

Wed 1/148:32 pmSTL - DTW

1 stop16h 45mFrontier

Deal found 12/9

$148

Thu 1/811:41 amDTW - STL

1 stop11h 52mFrontier

Sat 1/107:43 pmSTL - DTW

1 stop19h 05mFrontier

Deal found 12/11

$163

Tue 1/205:15 pmDTW - STL

1 stop7h 18mMultiple Airlines

Wed 1/218:22 pmSTL - DTW

1 stop12h 58mMultiple Airlines

Deal found 12/11

$136

Thu 1/293:16 pmDTW - STL

1 stop20h 07mFrontier

Mon 2/25:42 pmSTL - DTW

1 stop16h 12mFrontier

Deal found 12/11

$146

Thu 1/297:14 pmDTW - STL

1 stop12h 37mFrontier

Sat 1/318:22 pmSTL - DTW

1 stop14h 49mFrontier

Deal found 12/10

$174

Fri 1/307:14 pmDTW - STL

1 stop12h 37mFrontier

Mon 2/25:42 pmSTL - DTW

1 stop16h 12mFrontier

Deal found 12/10

$144

One-way flights from Detroit to St. Louis
Search for one-way flight options from Detroit to St. Louis. Find affordable one-way fares based on user searches. Data last updated December 12, 2025.

Tue 1/132:36 pmDTW - STL

1 stop17h 15mMultiple Airlines

Deal found 12/11

$65

Sun 1/255:14 pmDTW - STL

1 stop20h 36mFrontier

Deal found 12/9

$70

Fri 1/2311:39 amDTW - STL

1 stop23h 22mFrontier

Deal found 12/8

$74

Sun 1/1111:41 amDTW - STL

1 stop21h 24mFrontier

Deal found 12/8

$75

Tue 1/206:35 amDTW - STL

2 stops25h 16mMultiple Airlines

Deal found 12/10

$78

Mon 2/23:14 pmDTW - STL

1 stop9h 19mFrontier

Deal found 12/10

$79

Mon 1/125:15 pmDTW - STL

1 stop30h 19mMultiple Airlines

Deal found 12/11

$80

Sat 1/243:16 pmDTW - STL

1 stop9h 17mFrontier

Deal found 12/10

$81

Fri 2/67:14 pmDTW - STL

1 stop12h 37mFrontier

Deal found 12/8

$82

Sun 1/185:59 pmDTW - STL

1 stop13h 52mFrontier

Deal found 12/10

$84

Fri 1/1612:19 pmDTW - STL

1 stop27h 29mFrontier

Deal found 12/10

$85

Find flight deals from Detroit to St. Louis

Most accurate provider	eDreams 3 stars
Most trusted provider	eDreams 3 stars
Round-trip from	$136 (Kiwi.com)
One-way from	$65 (Kiwi.com)
Popular in	November
Cheapest in	August
Average price	$367
Good round-trip deal	$339 or less
Good one-way deal	$251 or less

Provider with most accurate pricing for Detroit (DTT)-Lambert-St Louis flight deals.

Search Deals

Provider most trusted by Cheapflights users for Detroit (DTT)-Lambert-St Louis flights.

Search Deals

From Detroit (DTT) to Lambert-St Louis

Search Deals

One-way flight from Detroit (DTT) to Lambert-St Louis

Search Deals

Highest demand for flights based on searches. 21% potential increase in price ($74 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 3% potential price decrease ($10 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in December 2025

Search Deals

Price to beat on a round-trip flight from Detroit (DTT) to Lambert-St Louis.

Search Deals

Price to beat on a one-way flight from Detroit (DTT) to Lambert-St Louis.

Search Deals

Fly from

Fly to

Route

Depart

Return

Price

DetroitSt. Louis

DTW - STL

DTWSTL

Detroit Metropolitan Wayne County

Thu 1/29

3:16 pm-10:23 am

1 stop20h 07m

Lambert-St Louis

Mon 2/2

5:42 pm-10:54 am

1 stop16h 12m

$146

DetroitSt. Louis

DTW - STL

DTWSTL

Detroit Metropolitan Wayne County

Thu 2/19

5:05 am-9:47 am

1 stop5h 42m

Lambert-St Louis

Sun 2/22

10:42 am-10:20 am

1 stop22h 38m

$207

DetroitSt. Louis

DTW - STL

DTWSTL

Detroit Metropolitan Wayne County

Wed 1/7

5:50 am-6:50 am

Nonstop2h 00m

Lambert-St Louis

Wed 1/14

5:55 pm-8:25 pm

Nonstop1h 30m

$227

DetroitSt. Louis

DTW - STL

DTWSTL

Detroit Metropolitan Wayne County

Tue 1/6

6:30 pm-9:00 pm

1 stop3h 30m

Lambert-St Louis

Thu 1/8

5:55 pm-8:25 pm

Nonstop1h 30m

$237

DetroitSt. Louis

DTW - STL

DTWSTL

Detroit Metropolitan Wayne County

Thu 1/29

5:50 am-6:50 am

Nonstop2h 00m

Lambert-St Louis

Sat 1/31

5:45 pm-8:15 pm

Nonstop1h 30m

$237

DetroitSt. Louis

DTW - STL

DTWSTL

Detroit Metropolitan Wayne County

Fri 1/23

5:15 am-11:33 pm

1 stop19h 18m

Lambert-St Louis

Sun 1/25

5:42 pm-2:19 pm

1 stop19h 37m

$245

DetroitSt. Louis

DTW - STL

DTWSTL

Detroit Metropolitan Wayne County

Thu 1/8

9:00 am-12:29 pm

1 stop4h 29m

Lambert-St Louis

Mon 1/12

6:40 pm-11:44 pm

1 stop4h 04m

$251

DetroitSt. Louis

DTW - STL

DTWSTL

Detroit Metropolitan Wayne County

Wed 1/14

5:25 am-12:45 pm

2 stops8h 20m

Lambert-St Louis

Thu 1/15

5:05 am-12:50 pm

1 stop6h 45m

$252

DetroitSt. Louis

DTW - STL

DTWSTL

Detroit Metropolitan Wayne County

Thu 1/8

5:25 am-12:45 pm

2 stops8h 20m

Lambert-St Louis

Wed 1/14

2:15 pm-9:55 pm

2 stops6h 40m

$257

DetroitSt. Louis

DTW - STL

DTWSTL

Detroit Metropolitan Wayne County

Thu 1/29

6:00 am-2:30 pm

2 stops9h 30m

Lambert-St Louis

Sat 1/31

9:57 am-6:58 pm

2 stops8h 01m

$261

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/10

Showing 1-10 of 20 results

Compare providers for flights from Detroit to St. Louis

Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Detroit to St. Louis in December.

Provider	Price Accuracy	Trust Score*
Expedia	Price Accuracy2 stars	Trust Score*3 stars
FlightHub	Price Accuracy3 stars	Trust Score*1 star
eDreams	Price Accuracy3 stars	Trust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

Most accurate provider: When it comes to deals on Detroit-St. Louis flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Detroit-St. Louis flight deals on Cheapflights vs. eDreams >95% of the time. Price accuracy is based on data collected from Detroit-St. Louis flight searches over the past month and is updated monthly.
Most trusted provider: When it comes to deals on Detroit-St. Louis flights, Cheapflights users trust eDreams the most. eDreams has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Detroit-St. Louis flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Detroit to St. Louis

Have a flexible travel schedule? Discover the best time to fly to St. Louis from Detroit with our price prediction graph.

Estimated round-trip price

Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Detroit to St. Louis

How far ahead should I book a flight from Detroit to St. Louis?

The price you pay for your flight from Detroit to St. Louis may vary depending on when you book. For the best chance of a lower fare, look to book 22 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

What is the cheapest month to book a flight from Detroit to St. Louis?

Currently, August is the cheapest month in which you can book a flight from Detroit to St. Louis (average of $39). Flying from Detroit to St. Louis in December is currently the most expensive (average of $253). 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.

What is the cheapest time of day to fly from DTT to STL?

When flying from Detroit to St. Louis, the time of day you fly usually plays a role in the price. Save by searching for a flight at noon, which can drop the price by up to 8% versus a flight in the morning.

What is the cheapest day to fly from Detroit to St. Louis?

Travelers seeking maximum savings on their Detroit to St. Louis flight should consider departing on Friday at noon when fares are most often at their lowest. Sunday at noon flights should be avoided if possible as fares are typically the most expensive at this time.

Weekly flight availability from Detroit to St. Louis

The most flights from DTT to STL are scheduled on a Monday (15 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (3 on average).

How much does it cost to fly round-trip from Detroit to St. Louis?

Reviews of airlines servicing St. Louis

See what other customers who have flown with Southwest, Delta, and Spirit Airlines from Detroit to St. Louis have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.

Southwest

7.9

Good

4,253 reviews

Reviews

1 / 20

2.0

Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am

Southwest

7.9

Good

4,253 reviews

Southwest

7.9

Good

4,253 reviews

Reviews

1 / 20

2.0

Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am

Delta

7.9

Good

8,005 reviews

Southwest

7.9

Good

4,253 reviews

Reviews

1 / 20

2.0

Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am

Spirit Airlines

6.3

Okay

8,176 reviews

Southwest

7.9

Good

4,253 reviews

Reviews

1 / 20

2.0

Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am

Related info for your journey

What airports do I use to fly from Detroit to St. Louis?
You will need to book a flight from Detroit All airports to Lambert-St Louis if you want to fly from Detroit to St. Louis. At least 4 different airlines have flights from All airports (DTT) to Lambert-St Louis (STL) on a regular basis. There are 12 flights to St. Louis from the Detroit airport per day. If you manage to book one that is nonstop, then you can expect the flight time from DTT to STL to be around 1h 40m.
How long is the flight from Detroit to St. Louis?
A quick flight from Detroit to St. Louis can take about 2h. Frontier provides one of the quickest options available for as low as $227. The distance from Detroit to St. Louis is about 439 mi. This flight may include one or multiple stops.
What are the cheapest airlines flying from Detroit to St. Louis round-trip?
Our cheapest airline available from Detroit to St. Louis is Spirit Airlines. Our recent data shows that you can find tickets from as low as $28 on this airline. Additional options worth looking into are Frontier and Delta, starting at $111 and $120 round-trip. You may be able to fly from Detroit to St. Louis for 89% less than the average price by searching for these airlines.
What are the cheapest airlines to fly from Detroit to St. Louis one-way?
$36 is the cheapest one-way deal found within the past few days, from Spirit Airlines. You may also be able to find cheap deals on Delta and Southwest, with prices starting from $60 and $69, respectively.
What are the most reliable airlines from Detroit 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 Detroit to St. Louis on time: Virgin Atlantic (77%), KLM (75%), Korean Air (72%).
What are the cheapest flights from Detroit to St. Louis?
While on average a flight from Detroit to St. Louis is generally $343, our data shows the cheapest flight currently is $144. When looking at the most popular route, (Detroit Metropolitan Wayne County - Lambert-St Louis), you can expect to pay $150 for that flight.
Can I find deals for flights from Detroit to St. Louis that include hotel bookings?
Yes. In addition to deals on Detroit to St. Louis flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Detroit to St. Louis?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Detroit to St. Louis.
Can I find deals for business class flights from Detroit to St. Louis?
Yes. Cheapflights offers flight deals from Detroit 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.
What is the cheapest month to book a flight from Detroit to St. Louis?
Currently, August is the cheapest month in which you can book a flight from Detroit to St. Louis (average of $39). Flying from Detroit to St. Louis in December is currently the most expensive (average of $253). 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.

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Other flights to St. Louis

Top 4 airlines flying from Detroit to St. Louis

Airline	Cheapest	Average	Flexibility	On-time
Spirit Airlines	Cheapest$36	Average$101	FlexibilityNo cancel fee	On-time65%
Frontier	Cheapest$111	Average$229	FlexibilityNo cancel fee	On-time62%
Delta	Cheapest$136	Average$308	FlexibilityNo cancel fee	On-timeN/A
Southwest	Cheapest$137	Average$291	FlexibilityNo cancel fee	On-time63%

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$65+ Cheap flights from Detroit to St. Louis (DTT - STL)

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 1/13. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Detroit to St. Louis with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Cheapflights Tip: The best prices from Detroit All airports to Lambert-St Louis are usually found in August or July, booked 31 days in advance, depart on a Thursday or Friday and return on a Friday

Cheap flight deals from Detroit to St. Louis

Cheapest flights from Detroit to St. LouisExplore the most affordable flight options available from Detroit to St. Louis. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 12, 2025.

Explore the most affordable flight options available from Detroit to St. Louis. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 12, 2025.

Find flight deals from Detroit to St. Louis

Most accurate provider

Most trusted provider

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Good round-trip deal

Good one-way deal

Cheapflights Fare Finder

Use the filters below to find and compare flights from Detroit to St. Louis that are best for you.

Compare providers for flights from Detroit to St. Louis

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.

Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Detroit to St. Louis in December.

Best time to book a flight from Detroit to St. Louis

Have a flexible travel schedule? Discover the best time to fly to St. Louis from Detroit with our price prediction graph.

Cheapflights Insights

Everything you need to know about your flight from Detroit to St. Louis

How far ahead should I book a flight from Detroit to St. Louis?

Use this chart to determine the optimal time to book a round-trip flight from Detroit to St. Louis. Price data was last updated on December 5, 2025.

What is the cheapest month to book a flight from Detroit to St. Louis?

What is the cheapest time of day to fly from DTT to STL?

Find hourly flight availability from Detroit 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 December 12, 2025.

What is the cheapest day to fly from Detroit to St. Louis?

Use this chart to determine the cheapest time to fly round-trip from Detroit to St. Louis. Price data was last updated on December 6, 2025.

Weekly flight availability from Detroit to St. Louis

Explore weekly flight availability from Detroit 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 December 12, 2025.

How much does it cost to fly round-trip from Detroit to St. Louis?

Reviews of airlines servicing St. Louis

See what other customers who have flown with Southwest, Delta, and Spirit Airlines from Detroit to St. Louis have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

Find useful and relevant information for your journey from Detroit to St. Louis. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

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What is the cheapest month to book a flight from Detroit to St. Louis?

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Alternative routes for Detroit to St. Louis

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Top 4 airlines flying from Detroit to St. Louis

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Cheapest flights from Detroit to St. Louis
Explore the most affordable flight options available from Detroit to St. Louis. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 12, 2025.