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Cheap flights from Detroit Metropolitan Wayne County Airport to St. Louis

DTW — STL
11 Oct — 18 Oct1
1 adult
1 adult, Economy

Cheapflights Tip: The best prices from Detroit Metropolitan Wayne County to Lambert-St Louis are usually found in July or June, booked 14 days in advance, depart on a Thursday or Wednesday and return on a Monday

Cheap flight deals from Detroit to St. Louis

Discover tips and strategies to find the most affordable flight options for your journey from Detroit (DTW) 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 11 September 2025.

Popular in

October

Cheapest in

July

Average price

C$ 413

Good round-trip deal

C$ 218 or less

Good one-way deal

C$ 198 or less
Highest demand for flights based on searches. 11% potential increase in price (C$ 72 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease (C$ 13 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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Price to beat on a round-trip flight from Detroit Metropolitan Wayne County to Lambert-St Louis.
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Price to beat on a one-way flight from Detroit Metropolitan Wayne County to Lambert-St Louis.
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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 Metropolitan Wayne County Airport to St. Louis

How far ahead should I book a flight from Detroit Metropolitan Wayne County Airport 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 29 August 2025.

To ensure you get the cheapest price possible for a flight from Detroit Metropolitan Wayne County Airport to St. Louis, you should look to book at least 14 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

What is the cheapest month to book a flight from Detroit Metropolitan Wayne County Airport to St. Louis?

Currently, January is the cheapest month in which you can book a flight from Detroit Metropolitan Wayne County Airport to St. Louis (average of C$ 365). Flying from Detroit Metropolitan Wayne County Airport to St. Louis in September is currently the most expensive (average of C$ 491). 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 DTW 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 11 September 2025.

Unlike in the evening, when flights are generally more expensive, you can save up to 16% on flights from Detroit Metropolitan Wayne County Airport to St. Louis by exploring options for tickets in the afternoon.

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 11 September 2025.
Read through reviews of airlines operating flights from Detroit Metropolitan Wayne County Airport to St. Louis, such as Southwest and Delta. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.0
Very good
4,248 reviews
Check prices

Crew

8.6

Boarding

8.1

Entertainment

7.5

Overall

8.0

Food

7.0

Comfort

8.0

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
Check prices

Crew

8.6

Boarding

8.1

Entertainment

7.5

Overall

8.0

Food

7.0

Comfort

8.0

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
7,960 reviews
Southwest
8.0
Very good
4,248 reviews
Check prices

Crew

8.6

Boarding

8.1

Entertainment

7.5

Overall

8.0

Food

7.0

Comfort

8.0

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

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.

  • What are the cheapest airlines flying from Detroit Metropolitan Wayne County Airport to St. Louis round-trip?

    Cheapflights users have booked flights from Detroit Metropolitan Wayne County Airport to St. Louis round-trip from C$ 125. Another airline that can offer you cheap pricing is Southwest. Users have found that Delta is 67% cheaper than the other options available to this destination.

  • What are the most reliable airlines from Detroit Metropolitan Wayne County Airport 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 Metropolitan Wayne County Airport to St. Louis on time: SkyWest Airlines (100%), Aeromexico (89%), Spirit Airlines (88%).

  • 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 Metropolitan Wayne County Airport to St. Louis?

    Currently, January is the cheapest month in which you can book a flight from Detroit Metropolitan Wayne County Airport to St. Louis (average of C$ 365). Flying from Detroit Metropolitan Wayne County Airport to St. Louis in September is currently the most expensive (average of C$ 491). 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

Travelling to a place near St. Louis?

Book flights to St. Louis if you plan to visit one of these locations
Chesterfield
St. Peters

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Top 2 airlines flying from Detroit to St. Louis

Discover the top 2 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 629,999 searches. Data last updated 11 September 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapestC$ 125AverageC$ 414FlexibilityNo cancel feeOn-timeN/A
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SouthwestCheapestC$ 187AverageC$ 413FlexibilityNo cancel feeOn-time63%
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Fly with Cheapflights

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How does Cheapflights help users find flights from Detroit to St. Louis?

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Why should you use Cheapflights to find cheap flight tickets from Detroit to St. Louis?

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Can Cheapflights find flights from Detroit to St. Louis with no change fees?

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Can Cheapflights notify me if prices for flights from Detroit to St. Louis become cheaper?

Not ready to book yet? You can track prices for flights from Detroit to St. Louis on Cheapflights with our Price Alert feature and get notified when better prices are available.

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