$70+ Cheap flights from St. Louis to Detroit (STL - DTT)
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 11/2. Fares are subject to change and may not be available on all flights or dates of travel.
STL — DTT
Sep 21 — Sep 281
Round-trip
1 adult, Economy
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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
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Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheap flight deals from St. Louis to Detroit
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Best
Last-minute
One-way
Cheapest flights from St. Louis to DetroitExplore the most affordable flight options available from St. Louis to Detroit. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 22, 2026.
Explore the most affordable flight options available from St. Louis to Detroit. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 22, 2026.
This Southwest deal was found by Cheapflights users on 8/19. 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.
Wed 9/1611:10 am -
Nonstop1h 30m
Wed 9/236:25 am -
Nonstop1h 35m
Deal found 8/19![Southwest logo]()
$167
This Kiwi.com deal was found by Cheapflights users on 8/19. 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 9/182:29 pm -
1 stop9h 13m
Mon 9/217:00 am -
1 stop7h 10m
Deal found 8/19![Frontier logo]()
$174
This Southwest deal was found by Cheapflights users on 8/18. 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.
Tue 9/157:20 pm -
Nonstop1h 35m
Tue 9/226:25 am -
Nonstop1h 35m
Deal found 8/18![Southwest logo]()
$177
This Expedia deal was found by Cheapflights users on 8/19. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/162:29 pm -
1 stop9h 13m
Wed 9/236:46 pm -
1 stop24h 08m
Deal found 8/19![Frontier logo]()
$178
This Kiwi.com deal was found by Cheapflights users on 8/19. 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.
Mon 9/142:29 pm -
1 stop20h 36m
Mon 9/217:00 am -
1 stop7h 10m
Deal found 8/19![Frontier logo]()
$185
This Kiwi.com deal was found by Cheapflights users on 8/19. 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 9/182:29 pm -
1 stop9h 13m
Sat 9/267:08 am -
1 stop13h 09m
Deal found 8/19![Frontier logo]()
$186
This CheapOair deal was found by Cheapflights users on 8/18. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/106:39 pm -
1 stop22h 17m
Sat 9/127:08 am -
1 stop13h 09m
Deal found 8/18![Frontier logo]()
$188
This Kiwi.com deal was found by Cheapflights users on 8/19. 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.
Mon 9/142:29 pm -
1 stop20h 36m
Fri 9/257:00 am -
1 stop7h 10m
Deal found 8/19![Frontier logo]()
$191
This Kiwi.com deal was found by Cheapflights users on 8/19. 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 9/182:29 pm -
1 stop9h 13m
Wed 9/237:00 am -
1 stop7h 10m
Deal found 8/19![Frontier logo]()
$193
This Frontier deal was found by Cheapflights users on 8/18. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/912:17 pm -
1 stop15h 38m
Fri 9/117:08 am -
1 stop13h 09m
Deal found 8/18![Frontier logo]()
$196
Best flights from St. Louis to DetroitDiscover carefully curated flight deals from St. Louis to Detroit that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated August 22, 2026.
Discover carefully curated flight deals from St. Louis to Detroit that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated August 22, 2026.
This Southwest deal was found by Cheapflights users on 8/19. 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.
Wed 9/167:20 pm -
Nonstop1h 35m
Wed 9/236:25 am -
Nonstop1h 35m
Deal found 8/19![Southwest logo]()
$177
This Delta deal was found by Cheapflights users on 8/22. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/126:40 am -
Nonstop1h 33m
Mon 9/147:58 pm -
Nonstop1h 37m
Deal found 8/22![Delta logo]()
$257
This Southwest deal was found by Cheapflights users on 8/20. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/186:50 pm -
Nonstop1h 35m
Mon 9/217:20 pm -
1 stop3h 50m
Deal found 8/20![Southwest logo]()
$272
This Delta deal was found by Cheapflights users on 8/19. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/2010:29 am -
Nonstop1h 33m
Mon 9/217:58 pm -
Nonstop1h 37m
Deal found 8/19![Delta logo]()
$282
This Southwest deal was found by Cheapflights users on 8/21. 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.
Fri 9/116:50 pm -
Nonstop1h 35m
Tue 9/156:25 am -
Nonstop1h 35m
Deal found 8/21![Southwest logo]()
$284
This Delta deal was found by Cheapflights users on 8/22. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/136:00 pm -
Nonstop1h 36m
Sun 11/1512:40 pm -
Nonstop1h 43m
Deal found 8/22![Delta logo]()
$287
This Delta deal was found by Cheapflights users on 8/21. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/166:47 am -
Nonstop1h 33m
Sun 10/189:05 am -
Nonstop1h 39m
Deal found 8/21![Delta logo]()
$287
This Southwest deal was found by Cheapflights users on 8/17. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/2010:30 am -
Nonstop1h 30m
Sun 10/255:40 am -
1 stop4h 40m
Deal found 8/17![Southwest logo]()
$292
This Delta deal was found by Cheapflights users on 8/19. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/96:05 pm -
Nonstop1h 34m
Sun 10/119:05 am -
Nonstop1h 39m
Deal found 8/19![Delta logo]()
$287
Last-minute flights from St. Louis to DetroitDiscover last-minute flight deals from St. Louis to Detroit. Data last updated August 22, 2026 and is based on user searches.
Discover last-minute flight deals from St. Louis to Detroit. Data last updated August 22, 2026 and is based on user searches.
This Frontier deal was found by Cheapflights users on 8/18. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/912:17 pm -
1 stop15h 38m
Fri 9/117:08 am -
1 stop13h 09m
Deal found 8/18![Frontier logo]()
$196
This CheapOair deal was found by Cheapflights users on 8/18. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/106:39 pm -
1 stop22h 17m
Sat 9/127:08 am -
1 stop13h 09m
Deal found 8/18![Frontier logo]()
$188
This Kiwi.com deal was found by Cheapflights users on 8/19. 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.
Mon 9/142:29 pm -
1 stop20h 36m
Mon 9/217:00 am -
1 stop7h 10m
Deal found 8/19![Frontier logo]()
$185
This Kiwi.com deal was found by Cheapflights users on 8/19. 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.
Mon 9/142:29 pm -
1 stop20h 36m
Fri 9/257:00 am -
1 stop7h 10m
Deal found 8/19![Frontier logo]()
$191
This Southwest deal was found by Cheapflights users on 8/18. 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.
Tue 9/157:20 pm -
Nonstop1h 35m
Tue 9/226:25 am -
Nonstop1h 35m
Deal found 8/18![Southwest logo]()
$177
This Southwest deal was found by Cheapflights users on 8/19. 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.
Wed 9/1611:10 am -
Nonstop1h 30m
Wed 9/236:25 am -
Nonstop1h 35m
Deal found 8/19![Southwest logo]()
$167
This Expedia deal was found by Cheapflights users on 8/19. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/162:29 pm -
1 stop9h 13m
Wed 9/236:46 pm -
1 stop24h 08m
Deal found 8/19![Frontier logo]()
$178
This Kiwi.com deal was found by Cheapflights users on 8/19. 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 9/182:29 pm -
1 stop9h 13m
Mon 9/217:00 am -
1 stop7h 10m
Deal found 8/19![Frontier logo]()
$174
This Kiwi.com deal was found by Cheapflights users on 8/19. 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 9/182:29 pm -
1 stop9h 13m
Sat 9/267:08 am -
1 stop13h 09m
Deal found 8/19![Frontier logo]()
$186
This Kiwi.com deal was found by Cheapflights users on 8/19. 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 9/182:29 pm -
1 stop9h 13m
Wed 9/237:00 am -
1 stop7h 10m
Deal found 8/19![Frontier logo]()
$193
One-way flights from St. Louis to DetroitSearch for one-way flight options from St. Louis to Detroit. Find affordable one-way fares based on user searches. Data last updated August 22, 2026.
Search for one-way flight options from St. Louis to Detroit. Find affordable one-way fares based on user searches. Data last updated August 22, 2026.
This Kiwi.com deal was found by Cheapflights users on 8/21. 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.
Mon 11/26:44 pm -
2 stops39h 18m
Deal found 8/21![Frontier logo]()
$70
This Trip.com deal was found by Cheapflights users on 8/21. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/302:29 pm -
1 stop9h 13m
Deal found 8/21![Frontier logo]()
$83
This Southwest deal was found by Cheapflights users on 8/21. 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.
Wed 9/1611:10 am -
Nonstop1h 30m
Deal found 8/21![Southwest logo]()
$84
This Kiwi.com deal was found by Cheapflights users on 8/21. 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.
Wed 10/216:35 pm -
1 stop16h 21m
Deal found 8/21![Frontier logo]()
$85
This Kiwi.com deal was found by Cheapflights users on 8/21. 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.
Mon 10/58:10 pm -
1 stop18h 18m
Deal found 8/21![Frontier logo]()
$86
This Trip.com deal was found by Cheapflights users on 8/17. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/282:29 pm -
1 stop9h 13m
Deal found 8/17![Frontier logo]()
$87
This Trip.com deal was found by Cheapflights users on 8/17. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/126:35 pm -
1 stop16h 21m
Deal found 8/17![Frontier logo]()
$88
This Delta deal was found by Cheapflights users on 8/18. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/34:10 pm -
Nonstop1h 32m
Deal found 8/18![Delta logo]()
$89
This Kiwi.com deal was found by Cheapflights users on 8/17. 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.
Thu 11/1210:35 am -
1 stop27h 04m
Deal found 8/17![Frontier logo]()
$90
This Kiwi.com deal was found by Cheapflights users on 8/17. 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.
Mon 11/910:35 am -
1 stop27h 04m
Deal found 8/17![Frontier logo]()
$91
This Kiwi.com deal was found by Cheapflights users on 8/21. 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.
Mon 10/196:35 pm -
1 stop16h 21m
Deal found 8/21![Frontier logo]()
$92
This Trip.com deal was found by Cheapflights users on 8/17. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/112:59 pm -
1 stop7h 11m
Deal found 8/17![Frontier logo]()
$93
Find flight deals from St. Louis to Detroit
Discover tips and strategies to find the most affordable flight options for your journey from St. Louis (STL) to Detroit (DTT). 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 August 22, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $167 (Southwest) |
One-way from | $70 (Kiwi.com) |
Popular in | February |
Cheapest in | April |
Average price | $320 |
Good round-trip deal | $366 or less |
Good one-way deal | $271 or less |
Cheapflights Fare Finder
Customize your flight search to find flights from St. Louis to Detroit 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 7,457,451 searches. Data last updated August 22, 2026.
Use the filters below to find and compare flights from St. Louis to Detroit that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
Quickest round-trip
St. LouisDetroit
STL Lambert-St Louis - DTW Detroit Metropolitan Wayne County
STLDTW
Lambert-St Louis
Wed 9/16
7:20 pm-9:55 pm
Nonstop1h 35m
Detroit Metropolitan Wayne County
Wed 9/23
6:25 am-7:00 am
Nonstop1h 35m
$177
St. LouisDetroit
STL Lambert-St Louis - DTW Detroit Metropolitan Wayne County
STLDTW
Lambert-St Louis
Sat 9/12
6:40 am-9:13 am
Nonstop1h 33m
Detroit Metropolitan Wayne County
Mon 9/14
7:58 pm-8:35 pm
Nonstop1h 37m
$257
St. LouisDetroit
STL Lambert-St Louis - DTW Detroit Metropolitan Wayne County
STLDTW
Lambert-St Louis
Fri 9/18
6:50 pm-9:25 pm
Nonstop1h 35m
Detroit Metropolitan Wayne County
Mon 9/21
7:20 pm-10:10 pm
1 stop3h 50m
$272
St. LouisDetroit
STL Lambert-St Louis - DTW Detroit Metropolitan Wayne County
STLDTW
Lambert-St Louis
Sun 9/20
10:29 am-1:02 pm
Nonstop1h 33m
Detroit Metropolitan Wayne County
Mon 9/21
7:58 pm-8:35 pm
Nonstop1h 37m
$282
St. LouisDetroit
STL Lambert-St Louis - DTW Detroit Metropolitan Wayne County
STLDTW
Lambert-St Louis
Fri 9/11
6:50 pm-9:25 pm
Nonstop1h 35m
Detroit Metropolitan Wayne County
Tue 9/15
6:25 am-7:00 am
Nonstop1h 35m
$284
St. LouisDetroit
STL Lambert-St Louis - DTW Detroit Metropolitan Wayne County
STLDTW
Lambert-St Louis
Fri 11/13
6:00 pm-8:36 pm
Nonstop1h 36m
Detroit Metropolitan Wayne County
Sun 11/15
12:40 pm-1:23 pm
Nonstop1h 43m
$287
St. LouisDetroit
STL Lambert-St Louis - DTW Detroit Metropolitan Wayne County
STLDTW
Lambert-St Louis
Fri 10/16
6:47 am-9:20 am
Nonstop1h 33m
Detroit Metropolitan Wayne County
Sun 10/18
9:05 am-9:44 am
Nonstop1h 39m
$287
St. LouisDetroit
STL Lambert-St Louis - DTW Detroit Metropolitan Wayne County
STLDTW
Lambert-St Louis
Fri 10/9
6:05 pm-8:39 pm
Nonstop1h 34m
Detroit Metropolitan Wayne County
Sun 10/11
9:05 am-9:44 am
Nonstop1h 39m
$287
St. LouisDetroit
STL Lambert-St Louis - DTW Detroit Metropolitan Wayne County
STLDTW
Lambert-St Louis
Tue 10/20
10:30 am-1:00 pm
Nonstop1h 30m
Detroit Metropolitan Wayne County
Sun 10/25
5:40 am-9:20 am
1 stop4h 40m
$292
Cheapest one-way
St. LouisDetroit
STL Lambert-St Louis - DTW Detroit Metropolitan Wayne County
STLDTW
Lambert-St Louis
Tue 9/15
5:59 pm-8:34 pm
Nonstop1h 35m
$89
Showing 1-10 of 19 resultsSorted by cheapest first
Compare providers for flights from St. Louis to Detroit
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 St. Louis to Detroit in August.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy- | Trust Score*1 star | |
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy- | Trust Score*1 star |
- Most accurate provider: When it comes to deals on St. Louis-Detroit flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on St. Louis-Detroit flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from St. Louis-Detroit flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on St. Louis-Detroit 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 St. Louis-Detroit 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 St. Louis to Detroit
Have a flexible travel schedule? Discover the best time to fly to Detroit from St. Louis with our price prediction graph.
STL-DTT
STL-DTW
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 St. Louis to Detroit
STL-DTT
STL-DTW
What is the cheapest month to book a flight from St. Louis to Detroit?
Currently, August is the cheapest month in which you can book a flight from St. Louis to Detroit (average of $293). Flying from St. Louis to Detroit in February is currently the most expensive (average of $423). 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 STL to DTT?
Find hourly flight availability from St. Louis to Detroit. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated August 22, 2026.
One of the essential ways to save on airfare from St. Louis to Detroit is to remain as flexible as possible. Flights that are at noon tend to be the most expensive. A flight in the evening could potentially save you up to 66% on airfare.
Weekly flight availability from St. Louis to Detroit
Explore weekly flight availability from St. Louis to Detroit. 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 August 22, 2026.
The most flights from STL to DTT are scheduled on a Friday (19 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (7 on average).
How much does it cost to fly round-trip from St. Louis to Detroit?
Airfare is below average for this route at the moment.
St. Louis to Detroit flights typically cost between $268 and $515 in September.The cheapest round-trip price found within the last 5 days was $167 on Southwest (Sep 16-Sep 23).
How far ahead should I book a flight from St. Louis to Detroit?
Booking 50 days in advance of your planned departure date is, on average, the best time to get cheap flights from St. Louis to Detroit. The general trend is that the closer you book to the departure date, the more expensive your flight will be.
What is the cheapest day to fly from St. Louis to Detroit?
Use this chart to determine the cheapest time to fly round-trip from St. Louis to Detroit. Price data was last updated on August 22, 2026.
Travelers seeking maximum savings on their St. Louis to Detroit flight should consider departing on Tuesday evenings when fares are most often at their lowest. Sunday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.
Reviews of airlines servicing Detroit
Get insights into the airlines that provide service to Detroit. 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 Detroit. Reviews last updated August 22, 2026.
Peruse reviews from past customers who have flown with Southwest,Delta, andJetBlue from St. Louis to Detroit to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Crew
8.6
Entertainment
7.5
Food
7.0
Comfort
8.0
Overall
8.0
Boarding
8.1
Reviews
1 / 20
8.0
ExcellentLibby,Jun 2026
TUS - LAS
Crew
8.6
Entertainment
7.5
Food
7.0
Comfort
8.0
Overall
8.0
Boarding
8.1
Reviews
1 / 20
8.0
ExcellentLibby,Jun 2026
TUS - LAS
Crew
8.6
Entertainment
7.5
Food
7.0
Comfort
8.0
Overall
8.0
Boarding
8.1
Reviews
1 / 20
8.0
ExcellentLibby,Jun 2026
TUS - LAS
Crew
8.6
Entertainment
7.5
Food
7.0
Comfort
8.0
Overall
8.0
Boarding
8.1
Reviews
1 / 20
8.0
ExcellentLibby,Jun 2026
TUS - LAS
Crew
8.6
Entertainment
7.5
Food
7.0
Comfort
8.0
Overall
8.0
Boarding
8.1
Reviews
1 / 20
8.0
ExcellentLibby,Jun 2026
TUS - LAS
Related info for your journey
Find useful and relevant information for your journey from St. Louis to Detroit. 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 Detroit?
Book flights to Detroit if you plan to visit one of these locationsRoseville
Port Huron
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Other flights to Detroit
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St. Louis and Detroit flights
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Top 3 airlines flying from St. Louis to Detroit
Discover the top 3 airlines that operate flights from St. Louis to Detroit. 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 7,457,451 searches. Data last updated August 22, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$113 | Average$310 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$177 | Average$340 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$228 | Average$377 | FlexibilityNo cancel fee | On-timeN/A |