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

A quick flight from Detroit to St. Louis can take about 1h 43m. Frontier provides one of the quickest options available for as low as $217. 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 $36 on this airline. Additional options worth looking into are Frontier and Delta, starting at $111 and $139 round-trip. You may be able to fly from Detroit to St. Louis for 87% less than the average price by searching for these airlines.

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 $282, our data shows the cheapest flight currently is $114. When looking at the most popular route, (Detroit Metropolitan Wayne County - Lambert-St Louis), you can expect to pay $182 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: SkyWest Airlines (100%), KLM (88%), Southwest (86%).

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, Frontier 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 FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Detroit-St. Louis flight deals on Cheapflights vs. FlightHub >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 FlightHub the most. FlightHub 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 5 different airlines have flights from All airports (DTT) to Lambert-St Louis (STL) on a regular basis. There are 10 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 35m.

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.

$74+ 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 $281 and $505 in October. The cheapest round-trip price found within the last 3 days was $164 on Frontier (Oct 22-Oct 24).

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Find cheap flights from Detroit to St. Louis with Cheapflights

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.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheapflights Tip: The best prices from Detroit All airports to Lambert-St Louis are usually found in August or July, booked 79 days in advance, depart on a Friday or Thursday and return on a Friday

Cheap flight deals from Detroit to St. Louis

Most accurate provider	FlightHub 3 stars
Most trusted provider	FlightHub 3 stars
Round-trip from	$164 (Booking.com)
One-way from	$74 (Kiwi.com)
Popular in	October
Cheapest in	August
Average price	$305
Good round-trip deal	$265 or less
Good one-way deal	$158 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. 18% potential increase in price ($62 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 September 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

Find 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 September 30, 2025.

Wed 10/223:42 pmDTW - STL

1 stop19h 55mFrontier

Fri 10/246:42 pmSTL - DTW

1 stop15h 35mFrontier

Deal found 9/27

$164

Wed 10/229:05 pmDTW - STL

1 stop14h 32mMultiple Airlines

Sun 10/2611:32 amSTL - DTW

1 stop19h 44mMultiple Airlines

Deal found 9/30

$171

Mon 10/61:36 pmDTW - STL

1 stop8h 01mFrontier

Fri 10/106:05 pmSTL - DTW

1 stop16h 12mFrontier

Deal found 9/28

$172

Thu 11/206:45 amDTW - STL

1 stop7h 58mAmerican Airlines

Mon 11/243:43 pmSTL - DTW

1 stop7h 09mAmerican Airlines

Deal found 9/30

$175

Sat 10/43:42 pmDTW - STL

1 stop24h 22mFrontier

Mon 10/64:00 pmSTL - DTW

1 stop21h 34mFrontier

Deal found 9/28

$184

Wed 10/153:42 pmDTW - STL

1 stop19h 55mFrontier

Mon 10/207:52 pmSTL - DTW

1 stop28h 07mFrontier

Deal found 9/29

$191

Wed 10/153:42 pmDTW - STL

1 stop19h 55mFrontier

Tue 10/217:52 pmSTL - DTW

1 stop28h 07mFrontier

Deal found 9/29

$195

Tue 10/2812:45 pmDTW - STL

Nonstop1h 37mDelta

Tue 11/46:14 pmSTL - DTW

Nonstop1h 31mDelta

Deal found 9/28

$203

Tue 10/286:40 pmDTW - STL

1 stop5h 25mAmerican Airlines

Tue 11/46:52 amSTL - DTW

1 stop4h 28mAmerican Airlines

Deal found 9/28

$206

Tue 12/92:11 pmDTW - STL

1 stop3h 39mAmerican Airlines

Thu 12/115:02 amSTL - DTW

1 stop5h 12mAmerican Airlines

Deal found 9/28

$207

Wed 10/153:42 pmDTW - STL

1 stop19h 55mFrontier

Wed 10/227:52 pmSTL - DTW

2 stops19h 11mFrontier

Deal found 9/29

$208

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 September 30, 2025.

Thu 10/164:58 pmDTW - STL

1 stop18h 39mFrontier

Mon 10/207:52 pmSTL - DTW

1 stop28h 07mFrontier

Deal found 9/29

$191

Tue 12/91:10 pmDTW - STL

Nonstop1h 43mDelta

Thu 12/116:39 amSTL - DTW

Nonstop1h 36mDelta

Deal found 9/28

$217

Wed 11/128:30 amDTW - STL

1 stop5h 44mAmerican Airlines

Fri 11/148:13 amSTL - DTW

1 stop7h 14mAmerican Airlines

Deal found 9/29

$231

Wed 10/228:00 amDTW - STL

Nonstop1h 40mSouthwest

Fri 10/248:10 pmSTL - DTW

Nonstop1h 30mSouthwest

Deal found 9/27

$246

Tue 1/67:55 pmDTW - STL

Nonstop1h 44mDelta

Mon 1/126:45 amSTL - DTW

Nonstop1h 37mDelta

Deal found 9/28

$231

Tue 11/114:25 pmDTW - STL

Nonstop1h 44mDelta

Fri 11/146:40 amSTL - DTW

Nonstop1h 33mDelta

Deal found 9/28

$246

Thu 11/612:45 pmDTW - STL

Nonstop1h 37mDelta

Fri 11/76:40 amSTL - DTW

Nonstop1h 32mDelta

Deal found 9/29

$260

Last-minute flights from Detroit to St. Louis
Discover last-minute flight deals from Detroit to St. Louis. Data last updated September 30, 2025 and is based on user searches.

Sat 10/43:42 pmDTW - STL

1 stop24h 22mFrontier

Mon 10/64:00 pmSTL - DTW

1 stop21h 34mFrontier

Deal found 9/28

$184

Mon 10/61:36 pmDTW - STL

1 stop8h 01mFrontier

Fri 10/106:05 pmSTL - DTW

1 stop16h 12mFrontier

Deal found 9/28

$172

Wed 10/153:42 pmDTW - STL

1 stop19h 55mFrontier

Mon 10/207:52 pmSTL - DTW

1 stop28h 07mFrontier

Deal found 9/29

$191

Wed 10/153:42 pmDTW - STL

1 stop19h 55mFrontier

Tue 10/217:52 pmSTL - DTW

1 stop28h 07mFrontier

Deal found 9/29

$195

Wed 10/153:42 pmDTW - STL

1 stop19h 55mFrontier

Wed 10/227:52 pmSTL - DTW

2 stops19h 11mFrontier

Deal found 9/29

$208

Wed 10/223:42 pmDTW - STL

1 stop19h 55mFrontier

Fri 10/246:42 pmSTL - DTW

1 stop15h 35mFrontier

Deal found 9/27

$164

Wed 10/229:05 pmDTW - STL

1 stop14h 32mMultiple Airlines

Sun 10/2611:32 amSTL - DTW

1 stop19h 44mMultiple Airlines

Deal found 9/30

$171

Tue 10/2812:45 pmDTW - STL

Nonstop1h 37mDelta

Tue 11/46:14 pmSTL - DTW

Nonstop1h 31mDelta

Deal found 9/28

$203

Tue 10/286:40 pmDTW - STL

1 stop5h 25mAmerican Airlines

Tue 11/46:52 amSTL - DTW

1 stop4h 28mAmerican Airlines

Deal found 9/28

$206

Tue 10/285:50 amDTW - STL

1 stop6h 35mSouthwest

Tue 11/46:10 pmSTL - DTW

Nonstop1h 30mSouthwest

Deal found 9/28

$213

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 September 30, 2025.

Wed 10/229:05 pmDTW - STL

1 stop14h 32mMultiple Airlines

Deal found 9/29

$74

Wed 11/196:29 pmDTW - STL

1 stop5h 32mFrontier

Deal found 9/28

$80

Wed 10/299:05 pmDTW - STL

1 stop14h 07mMultiple Airlines

Deal found 9/30

$84

Sun 11/29:05 pmDTW - STL

1 stop13h 02mFrontier

Deal found 9/27

$86

Thu 10/309:05 pmDTW - STL

1 stop19h 52mMultiple Airlines

Deal found 9/30

$87

Tue 10/215:30 amDTW - STL

1 stop9h 14mAmerican Airlines

Deal found 9/29

$91

Tue 10/217:55 amDTW - STL

1 stop26h 12mFrontier

Deal found 9/27

$92

Thu 10/234:58 pmDTW - STL

1 stop18h 18mFrontier

Deal found 9/29

$93

Mon 11/245:33 amDTW - STL

1 stop9h 10mAmerican Airlines

Deal found 9/27

$94

Sat 11/19:05 pmDTW - STL

1 stop15h 07mMultiple Airlines

Deal found 9/30

$97

Tue 10/2112:45 pmDTW - STL

Nonstop1h 37mDelta

Deal found 9/29

$102

Fly from

Fly to

Route

Depart

Return

Price

DetroitSt. Louis

DTW - STL

DTWSTL

Detroit Metropolitan Wayne County

Thu 10/16

4:58 pm-10:37 am

1 stop18h 39m

Lambert-St Louis

Mon 10/20

7:52 pm-12:59 am

1 stop28h 07m

$191

DetroitSt. Louis

DTW - STL

DTWSTL

Detroit Metropolitan Wayne County

Tue 12/9

1:10 pm-1:53 pm

Nonstop1h 43m

Lambert-St Louis

Thu 12/11

6:39 am-9:15 am

Nonstop1h 36m

$217

DetroitSt. Louis

DTW - STL

DTWSTL

Detroit Metropolitan Wayne County

Wed 11/12

8:30 am-1:14 pm

1 stop5h 44m

Lambert-St Louis

Fri 11/14

8:13 am-4:27 pm

1 stop7h 14m

$231

DetroitSt. Louis

DTW - STL

DTWSTL

Detroit Metropolitan Wayne County

Tue 1/6

7:55 pm-8:39 pm

Nonstop1h 44m

Lambert-St Louis

Mon 1/12

6:45 am-9:22 am

Nonstop1h 37m

$231

DetroitSt. Louis

DTW - STL

DTWSTL

Detroit Metropolitan Wayne County

Wed 10/22

8:00 am-8:40 am

Nonstop1h 40m

Lambert-St Louis

Fri 10/24

8:10 pm-10:40 pm

Nonstop1h 30m

$246

DetroitSt. Louis

DTW - STL

DTWSTL

Detroit Metropolitan Wayne County

Tue 11/11

4:25 pm-5:09 pm

Nonstop1h 44m

Lambert-St Louis

Fri 11/14

6:40 am-9:13 am

Nonstop1h 33m

$246

DetroitSt. Louis

DTW - STL

DTWSTL

Detroit Metropolitan Wayne County

Thu 11/6

12:45 pm-1:22 pm

Nonstop1h 37m

Lambert-St Louis

Fri 11/7

6:40 am-9:12 am

Nonstop1h 32m

$260

DetroitSt. Louis

DTW - STL

DTWSTL

Detroit Metropolitan Wayne County

Wed 11/5

12:45 pm-1:22 pm

Nonstop1h 37m

$102

DetroitSt. Louis

DTW - STL

DTWSTL

Detroit Metropolitan Wayne County

Wed 12/17

8:58 am-9:50 am

Nonstop1h 52m

$102

DetroitSt. Louis

DTW - STL

DTWSTL

Detroit Metropolitan Wayne County

Wed 11/12

8:55 am-9:46 am

Nonstop1h 51m

$102

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/27

Showing 1-10 of 16 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 September.

Provider	Price Accuracy	Trust Score*
Expedia	Price Accuracy2 stars	Trust Score*3 stars
FlightHub	Price Accuracy3 stars	Trust Score*3 stars
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 FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Detroit-St. Louis flight deals on Cheapflights vs. FlightHub >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 FlightHub the most. FlightHub 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 78 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 $311). Flying from Detroit to St. Louis in March is currently the most expensive (average of $356). 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 19% 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 Wednesday (15 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (2 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

8.0

Very good

4,248 reviews

Reviews

1 / 20

2.0

Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines

Southwest

8.0

Very good

4,248 reviews

Southwest

8.0

Very good

4,248 reviews

Reviews

1 / 20

2.0

Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines

Delta

8.0

Very good

7,964 reviews

Southwest

8.0

Very good

4,248 reviews

Reviews

1 / 20

2.0

Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines

Spirit Airlines

6.3

Okay

8,062 reviews

Southwest

8.0

Very good

4,248 reviews

Reviews

1 / 20

2.0

Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines

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 5 different airlines have flights from All airports (DTT) to Lambert-St Louis (STL) on a regular basis. There are 10 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 35m.
How long is the flight from Detroit to St. Louis?
A quick flight from Detroit to St. Louis can take about 1h 43m. Frontier provides one of the quickest options available for as low as $217. 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 $36 on this airline. Additional options worth looking into are Frontier and Delta, starting at $111 and $139 round-trip. You may be able to fly from Detroit to St. Louis for 87% less than the average price by searching for these airlines.
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: SkyWest Airlines (100%), KLM (88%), Southwest (86%).
What are the cheapest flights from Detroit to St. Louis?
While on average a flight from Detroit to St. Louis is generally $282, our data shows the cheapest flight currently is $114. When looking at the most popular route, (Detroit Metropolitan Wayne County - Lambert-St Louis), you can expect to pay $182 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 $311). Flying from Detroit to St. Louis in March is currently the most expensive (average of $356). 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.

See more FAQs

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Other flights to St. Louis

Top 5 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$139	Average$304	FlexibilityNo cancel fee	On-timeN/A
Southwest	Cheapest$148	Average$299	FlexibilityNo cancel fee	On-time63%
United Airlines	Cheapest$232	Average$476	FlexibilityNo cancel fee	On-time69%

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$74+ 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 10/22. 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 79 days in advance, depart on a Friday or Thursday and return on a Friday

Cheap 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

Find 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 September 30, 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 September 30, 2025.

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 September.

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 September 26, 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 September 30, 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 September 28, 2025.

Weekly flight availability from Detroit to St. Louis

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 are the cheapest flights from Detroit to St. Louis?

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Alternative routes for Detroit to St. Louis

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Top 5 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 September 30, 2025.