$82+ 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 7/21. Fares are subject to change and may not be available on all flights or dates of travel.
DTT — STL
Jul 22 — Jul 291
Round-trip
1 adult, Economy
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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 September, booked 22 days in advance, depart on a Saturday or Thursday and return on a Friday
Cheap flight deals from Detroit to St. Louis
Cheapest
Best
Last-minute
One-way
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 June 22, 2026.
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 June 22, 2026.
This Kiwi.com deal was found by Cheapflights users on 6/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/105:35 pm
DTW
- STL
1 stop16h 22m
Frontier
Mon 7/134:57 pm
STL
- DTW
1 stop6h 43m
Frontier
Deal found 6/19![Frontier logo]()
$167
This Kiwi.com deal was found by Cheapflights users on 6/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/175:35 pm
DTW
- STL
1 stop16h 22m
Frontier
Tue 7/216:34 pm
STL
- DTW
1 stop20h 54m
Frontier
Deal found 6/18![Frontier logo]()
$168
This Kiwi.com deal was found by Cheapflights users on 6/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/175:35 pm
DTW
- STL
1 stop16h 22m
Frontier
Sat 7/184:57 pm
STL
- DTW
1 stop6h 43m
Frontier
Deal found 6/18![Frontier logo]()
$170
This Kiwi.com deal was found by Cheapflights users on 6/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/236:10 am
DTW
- STL
1 stop12h 27m
Frontier
Mon 7/274:57 pm
STL
- DTW
1 stop19h 36m
Frontier
Deal found 6/22![Frontier logo]()
$171
This Kiwi.com deal was found by Cheapflights users on 6/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/275:35 pm
DTW
- STL
1 stop25h 02m
Frontier
Sat 8/14:57 pm
STL
- DTW
1 stop19h 36m
Frontier
Deal found 6/18![Frontier logo]()
$172
This Kiwi.com deal was found by Cheapflights users on 6/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 7/126:10 am
DTW
- STL
1 stop12h 27m
Frontier
Fri 7/174:57 pm
STL
- DTW
1 stop6h 43m
Frontier
Deal found 6/21![Frontier logo]()
$176
This Kiwi.com deal was found by Cheapflights users on 6/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/182:56 pm
DTW
- STL
1 stop27h 41m
Frontier
Sat 7/254:57 pm
STL
- DTW
1 stop6h 43m
Frontier
Deal found 6/18![Frontier logo]()
$182
This Kiwi.com deal was found by Cheapflights users on 6/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 7/196:10 am
DTW
- STL
1 stop12h 27m
Frontier
Mon 7/204:57 pm
STL
- DTW
1 stop6h 43m
Frontier
Deal found 6/22![Frontier logo]()
$190
This Kiwi.com deal was found by Cheapflights users on 6/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/76:10 am
DTW
- STL
1 stop27h 47m
Frontier
Tue 7/146:34 pm
STL
- DTW
1 stop20h 54m
Frontier
Deal found 6/17![Frontier logo]()
$197
This Southwest deal was found by Cheapflights users on 6/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/306:30 pm
DTW
- STL
Nonstop1h 35m
Southwest
Sat 7/410:15 am
STL
- DTW
Nonstop1h 30m
Southwest
Deal found 6/19![Southwest logo]()
$209
This Frontier deal was found by Cheapflights users on 6/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/412:27 pm
DTW
- STL
1 stop12h 32m
Frontier
Wed 8/57:03 pm
STL
- DTW
1 stop10h 57m
Frontier
Deal found 6/20![Frontier logo]()
$210
Best flights from Detroit to St. LouisDiscover 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 June 22, 2026.
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 June 22, 2026.
This Southwest deal was found by Cheapflights users on 6/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/187:10 am
DTW
- STL
Nonstop1h 35m
Southwest
Sat 7/254:40 pm
STL
- DTW
1 stop4h 50m
Southwest
Deal found 6/18![Southwest logo]()
$219
This Delta deal was found by Cheapflights users on 6/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/1412:28 pm
DTW
- STL
Nonstop1h 37m
Delta
Sat 7/186:30 am
STL
- DTW
Nonstop1h 34m
Delta
Deal found 6/20![Delta logo]()
$235
This United Airlines deal was found by Cheapflights users on 6/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/15:30 am
DTW
- STL
1 stop6h 04m
United Airlines
Sat 7/48:43 am
STL
- DTW
1 stop4h 51m
United Airlines
Deal found 6/20![United Airlines logo]()
$299
This Delta deal was found by Cheapflights users on 6/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/288:50 am
DTW
- STL
Nonstop1h 41m
Delta
Fri 7/316:30 am
STL
- DTW
Nonstop1h 34m
Delta
Deal found 6/17![Delta logo]()
$285
This Southwest deal was found by Cheapflights users on 6/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/87:55 am
DTW
- STL
2 stops6h 30m
Southwest
Mon 8/102:20 pm
STL
- DTW
1 stop5h 30m
Southwest
Deal found 6/21![Southwest logo]()
$293
This Southwest deal was found by Cheapflights users on 6/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/175:30 am
DTW
- STL
1 stop7h 05m
Southwest
Fri 9/186:05 am
STL
- DTW
2 stops7h 00m
Southwest
Deal found 6/18![Southwest logo]()
$347
Last-minute flights from Detroit to St. LouisDiscover last-minute flight deals from Detroit to St. Louis. Data last updated June 22, 2026 and is based on user searches.
Discover last-minute flight deals from Detroit to St. Louis. Data last updated June 22, 2026 and is based on user searches.
This Southwest deal was found by Cheapflights users on 6/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/306:30 pm
DTW
- STL
Nonstop1h 35m
Southwest
Sat 7/410:15 am
STL
- DTW
Nonstop1h 30m
Southwest
Deal found 6/19![Southwest logo]()
$209
This Kiwi.com deal was found by Cheapflights users on 6/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/76:10 am
DTW
- STL
1 stop27h 47m
Frontier
Tue 7/146:34 pm
STL
- DTW
1 stop20h 54m
Frontier
Deal found 6/17![Frontier logo]()
$197
This Kiwi.com deal was found by Cheapflights users on 6/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/105:35 pm
DTW
- STL
1 stop16h 22m
Frontier
Mon 7/134:57 pm
STL
- DTW
1 stop6h 43m
Frontier
Deal found 6/19![Frontier logo]()
$167
This Kiwi.com deal was found by Cheapflights users on 6/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 7/126:10 am
DTW
- STL
1 stop12h 27m
Frontier
Fri 7/174:57 pm
STL
- DTW
1 stop6h 43m
Frontier
Deal found 6/21![Frontier logo]()
$176
This Kiwi.com deal was found by Cheapflights users on 6/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/175:35 pm
DTW
- STL
1 stop16h 22m
Frontier
Tue 7/216:34 pm
STL
- DTW
1 stop20h 54m
Frontier
Deal found 6/18![Frontier logo]()
$168
This Kiwi.com deal was found by Cheapflights users on 6/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/175:35 pm
DTW
- STL
1 stop16h 22m
Frontier
Sat 7/184:57 pm
STL
- DTW
1 stop6h 43m
Frontier
Deal found 6/18![Frontier logo]()
$170
This Kiwi.com deal was found by Cheapflights users on 6/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/182:56 pm
DTW
- STL
1 stop27h 41m
Frontier
Sat 7/254:57 pm
STL
- DTW
1 stop6h 43m
Frontier
Deal found 6/18![Frontier logo]()
$182
This Kiwi.com deal was found by Cheapflights users on 6/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 7/196:10 am
DTW
- STL
1 stop12h 27m
Frontier
Mon 7/204:57 pm
STL
- DTW
1 stop6h 43m
Frontier
Deal found 6/22![Frontier logo]()
$190
This Kiwi.com deal was found by Cheapflights users on 6/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/236:10 am
DTW
- STL
1 stop12h 27m
Frontier
Mon 7/274:57 pm
STL
- DTW
1 stop19h 36m
Frontier
Deal found 6/22![Frontier logo]()
$171
This Kiwi.com deal was found by Cheapflights users on 6/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/275:35 pm
DTW
- STL
1 stop25h 02m
Frontier
Sat 8/14:57 pm
STL
- DTW
1 stop19h 36m
Frontier
Deal found 6/18![Frontier logo]()
$172
One-way flights from Detroit to St. LouisSearch for one-way flight options from Detroit to St. Louis. Find affordable one-way fares based on user searches. Data last updated June 22, 2026.
Search for one-way flight options from Detroit to St. Louis. Find affordable one-way fares based on user searches. Data last updated June 22, 2026.
This Trip.com deal was found by Cheapflights users on 6/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/216:10 am
DTW
- STL
1 stop12h 27m
Frontier
Deal found 6/18![Frontier logo]()
$82
This Kiwi.com deal was found by Cheapflights users on 6/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/96:10 am
DTW
- STL
1 stop12h 27m
Frontier
Deal found 6/18![Frontier logo]()
$84
This Kiwi.com deal was found by Cheapflights users on 6/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/85:13 pm
DTW
- STL
1 stop25h 24m
Frontier
Deal found 6/18![Frontier logo]()
$86
This Kiwi.com deal was found by Cheapflights users on 6/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/166:10 am
DTW
- STL
1 stop12h 27m
Frontier
Deal found 6/19![Frontier logo]()
$87
This Kiwi.com deal was found by Cheapflights users on 6/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/155:13 pm
DTW
- STL
1 stop25h 24m
Frontier
Deal found 6/20![Frontier logo]()
$88
This Kiwi.com deal was found by Cheapflights users on 6/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/225:13 pm
DTW
- STL
1 stop25h 24m
Frontier
Deal found 6/20![Frontier logo]()
$89
This Kiwi.com deal was found by Cheapflights users on 6/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/193:34 pm
DTW
- STL
1 stop19h 06m
Frontier
Deal found 6/19![Frontier logo]()
$93
This Kiwi.com deal was found by Cheapflights users on 6/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/56:40 pm
DTW
- STL
1 stop23h 42m
Frontier
Deal found 6/20![Frontier logo]()
$94
This Kiwi.com deal was found by Cheapflights users on 6/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/182:56 pm
DTW
- STL
1 stop27h 41m
Frontier
Deal found 6/18![Frontier logo]()
$98
This Kiwi.com deal was found by Cheapflights users on 6/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 7/266:10 am
DTW
- STL
1 stop27h 47m
Frontier
Deal found 6/20![Frontier logo]()
$99
This Kiwi.com deal was found by Cheapflights users on 6/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/38:46 pm
DTW
- STL
1 stop21h 36m
Frontier
Deal found 6/20![Frontier logo]()
$104
Find flight deals from Detroit to St. Louis
Discover tips and strategies to find the most affordable flight options for your journey from Detroit (DTT) 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 June 22, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $167 (Kiwi.com) |
One-way from | $82 (Trip.com) |
Popular in | April |
Cheapest in | August |
Average price | $279 |
Good round-trip deal | $358 or less |
Good one-way deal | $222 or less |
Cheapflights Fare Finder
Customize your flight search to find flights from Detroit 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 2,558,603 searches. Data last updated June 22, 2026.
Use the filters below to find and compare flights from Detroit to St. Louis that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
DetroitSt. Louis
DTW - STL
DTWSTL
Detroit Metropolitan Wayne County
Sat 7/18
7:10 am-7:45 am
Nonstop1h 35m
Lambert-St Louis
Sat 7/25
4:40 pm-10:30 pm
1 stop4h 50m
$219
Quickest round-trip
DetroitSt. Louis
DTW - STL
DTWSTL
Detroit Metropolitan Wayne County
Tue 7/14
12:28 pm-1:05 pm
Nonstop1h 37m
Lambert-St Louis
Sat 7/18
6:30 am-9:04 am
Nonstop1h 34m
$235
DetroitSt. Louis
DTW - STL
DTWSTL
Detroit Metropolitan Wayne County
Tue 7/28
8:50 am-9:31 am
Nonstop1h 41m
Lambert-St Louis
Fri 7/31
6:30 am-9:04 am
Nonstop1h 34m
$285
DetroitSt. Louis
DTW - STL
DTWSTL
Detroit Metropolitan Wayne County
Sat 8/8
7:55 am-1:25 pm
2 stops6h 30m
Lambert-St Louis
Mon 8/10
2:20 pm-8:50 pm
1 stop5h 30m
$293
DetroitSt. Louis
DTW - STL
DTWSTL
Detroit Metropolitan Wayne County
Wed 7/1
5:30 am-10:34 am
1 stop6h 04m
Lambert-St Louis
Sat 7/4
8:43 am-2:34 pm
1 stop4h 51m
$299
DetroitSt. Louis
DTW - STL
DTWSTL
Detroit Metropolitan Wayne County
Thu 9/17
5:30 am-11:35 am
1 stop7h 05m
Lambert-St Louis
Fri 9/18
6:05 am-2:05 pm
2 stops7h 00m
$347
Cheapest one-way
DetroitSt. Louis
DTW - STL
DTWSTL
Detroit Metropolitan Wayne County
Wed 7/15
8:50 am-9:31 am
Nonstop1h 41m
$105
Quickest one-way
DetroitSt. Louis
DTW - STL
DTWSTL
Detroit Metropolitan Wayne County
Sat 7/4
7:05 am-7:40 am
Nonstop1h 35m
$105
DetroitSt. Louis
DTW - STL
DTWSTL
Detroit Metropolitan Wayne County
Sat 7/18
8:00 pm-8:37 pm
Nonstop1h 37m
$118
DetroitSt. Louis
DTW - STL
DTWSTL
Detroit Metropolitan Wayne County
Sat 8/1
7:10 am-7:45 am
Nonstop1h 35m
$118
Showing 1-10 of 16 resultsSorted by cheapest first
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 June.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars |
- 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.
DTT-STL
DTW-STL
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
DTT-STL
DTW-STL
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 $27). Flying from Detroit to St. Louis in April is currently the most expensive (average of $181). 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?
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 June 22, 2026.
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 17% versus a flight in the morning.
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 June 22, 2026.
The most flights from DTT to STL are scheduled on a Monday (19 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (15 on average).
How much does it cost to fly round-trip 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 39 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.
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 June 20, 2026.
Travelers seeking maximum savings on their Detroit to St. Louis flight should consider departing on Tuesday at noon when fares are most often at their lowest. Thursday at noon flights should be avoided if possible as fares are typically the most expensive at this time.
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 June 22, 2026.
See what other customers who have flown with Southwest and Delta 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.
Comfort
8.0
Overall
7.9
Entertainment
7.5
Food
7.0
Crew
8.6
Boarding
8.1
Reviews
1 / 20
6.0
GoodReza,Jun 2026
TPA - MDW
Comfort
8.0
Overall
7.9
Entertainment
7.5
Food
7.0
Crew
8.6
Boarding
8.1
Reviews
1 / 20
6.0
GoodReza,Jun 2026
TPA - MDW
Comfort
8.0
Overall
7.9
Entertainment
7.5
Food
7.0
Crew
8.6
Boarding
8.1
Reviews
1 / 20
6.0
GoodReza,Jun 2026
TPA - MDW
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.
Traveling to a place near St. Louis?
Book flights to St. Louis if you plan to visit one of these locationsEdwardsville
O'Fallon
Fenton
Swansea
Fairview Heights
Eureka
Maryland Heights
Collinsville
Wentzville
Glencoe
Chesterfield
Alton
Farmington
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Top 3 airlines flying from Detroit to St. Louis
Discover the top 3 airlines that operate flights from Detroit 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 2,558,603 searches. Data last updated June 22, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$125 | Average$309 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$128 | Average$360 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$149 | Average$339 | FlexibilityNo cancel fee | On-time63% |