Cheap flights from Detroit to St. Louis from $28
This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Detroit to St. Louis departing on 8/8. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Southwest flights from Detroit to St. Louis
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Delta flights from Detroit to St. Louis
Our best Delta deals on Detroit to St. Louis flight tickets
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How to get the cheapest flight ticket from Detroit to St. Louis
Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip
What is the typical price of a round-trip flight between Detroit and St. Louis?
What is the cheapest month to fly to St. Louis?
In general, June is the cheapest month to fly from Detroit to St. Louis. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $215. The month of August is another great option to travel to St. Louis, with average flight prices from Detroit averaging around $275.
What is the cheapest day to depart on your flight to St. Louis?
The cheapest day to depart on your flight to St. Louis is on a Friday when prices can be found for as low as $323. This is often the case because there is less demand to fly during this day of the week. If your travel schedule is flexible, try to avoid departing on a Monday because tickets tend to average around $399. These prices are subject to change though, so be sure to set up a Price Alert for flights to St. Louis.
What is the cheapest time of day to depart on your flight to St. Louis?
Flying to St. Louis from Detroit in the afternoon is the least expensive time of day to depart. momondo users have found prices as low as $333 when looking at flights departing in the afternoon. In the morning is when there is more demand to fly to St. Louis, so prices are often more expensive at around $363 per ticket.
What is the cheapest Detroit to Lambert-St Louis flight route?
Fly from Detroit Metropolitan Wayne County to Lambert-St Louis for the best Detroit - Lambert-St Louis flight prices
How far in advance should I book a flight to St. Louis?
You are more likely to see cheaper flights to St. Louis from Detroit when booking weeks ahead of your departure date. In general, you can expect to find flights to St. Louis for around $303 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to St. Louis from Detroit for as low as $69 on momondo.
What cabin class options are available on Detroit to Lambert-St Louis flights?
There are 4 cabin classes available to choose from on Detroit to Lambert-St Louis flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.
Can stopping save me money on Detroit to St. Louis flights?
No. A direct flight is the cheapest option for a flight between Detroit to St. Louis.
How have Detroit to St. Louis flight prices changed over time?
As of July 2025, prices for Detroit to St. Louis flights are approximately 60% cheaper when compared to flights at the same time last year.
What is the cheapest airline that flies from Detroit to Lambert-St Louis?
Spirit Airlines, Southwest, and Delta are the most popular carriers operating from Detroit to Lambert-St Louis
What airlines fly to St. Louis?
Delta, Southwest and Spirit Airlines are the top three most popular airlines that fly to St. Louis from Detroit according to our data. Delta is the first choice among our users, with 65% of people opting to fly with this airline when traveling to St. Louis. Keep in mind that there are 6 different airlines that fly to St. Louis on a routine basis, so you have a few additional options to choose from.
How many flights depart from Detroit to St. Louis on average per day?
As of July 2025, there are 13 flights per day flying from Detroit to St. Louis. The most common time of day flights depart is 4:00PM, with 40% of flights taking off in the afternoon.
How many flights depart from Detroit to St. Louis on average per week?
91 flights are operational weekly from Detroit to St. Louis as of July 2025. The most popular departure day for this route is Mon, with 18% of flights per week taking off on this day.
When to book flights from Detroit to St. Louis
Cheap Detroit to St. Louis (DTT to STL) flight deals and tips
Find info about flight duration, direct flights, and airports for your flight from Detroit to St. Louis
How far is Detroit to Lambert-St Louis by plane?
There are 454.1 mi between Detroit and Lambert-St Louis. A reasonable flight in good conditions will take 1h 32m.
When did momondo last update prices for flights from Detroit to Lambert-St Louis Airport?
Prices for flights from Detroit to Lambert-St Louis Airport refresh daily.
How many operators does momondo search for flights from Detroit to Lambert-St Louis Airport?
As of July 2025, there are 6 operators available to choose from for flights from Detroit to Lambert-St Louis Airport.
How old do you have to be to fly from Detroit to Lambert-St Louis Airport?
The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Detroit to Lambert-St Louis Airport.
What documentation or ID do you need to fly to Lambert-St Louis Airport?
The required travel and health documents for your Lambert-St Louis Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Lambert-St Louis Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.
What is the most popular plane model from Detroit to St. Louis?
Based on momondo bookings for this flight route, the most popular plane model on flight routes from Detroit to St. Louis is Boeing 717-200 (25.06% of total bookings). The next most popular plane models are Boeing 737-700 Passenger/BBJ1 (winglets) (20.88%), Airbus A320neo (11.06%), and Airbus A320-100/200 (7.00%).
What is the most popular airline from Detroit to St. Louis?
momondo data reveals that the most frequently booked airline on the route from Detroit to St. Louis is Delta, representing 63% of all bookings. The subsequent popular airlines are Southwest at 32% and Spirit Airlines at 5%.
Best airlines flying from Detroit to St. Louis
Compare and see reviews for airlines that fly from Detroit to St. Louis with momondo
| Airline | Rating | Free Cancellation | Price | ||
|---|---|---|---|---|---|
| PriceFrom $38 | Free Cancellation | Rating 6.3 8,063 reviews | |||
| PriceFrom $124 | Free Cancellation | Rating 5.9 3,273 reviews | |||
| PriceFrom $179 | Free Cancellation | Rating 7.2 10,000 reviews | |||
| PriceFrom $199 | Free Cancellation | Rating 8.0 7,958 reviews | |||
| PriceFrom $205 | Free Cancellation | Rating 8.0 4,256 reviews | |||
| PriceFrom $340 | Free Cancellation | Rating 7.4 8,844 reviews |
Delta Flights From Detroit to St. Louis
Delta operates around 16 flights from Detroit to St. Louis every week. The average price of these flights found in the last 72 hours has been $324, but momondo users have found Delta deals from Detroit to St. Louis from as low as $199 round-trip. Delta has been scored 8.0/10 in 7,958 reviews.
Southwest Flights From Detroit to St. Louis
The best Southwest deal for Detroit to St. Louis flight tickets found on momondo in the last 72 hours was $205, round-trip. It should be noted that an average Southwest flight deal for this route in this time was higher, at $300 round-trip. Southwest operates 9 flights out of Detroit into St. Louis in an average week, so prices vary by time and availability. 4,256 Southwest reviews by users on momondo have scored the airline at 8.0/10.
Traveling to a place near St. Louis?
Book flights to St. Louis if you plan to visit one of these locationsWhy use momondo?
Why should I use momondo to find a flight deal from Detroit to St. Louis?
To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to St. Louis from Detroit.
Can I find flights from Detroit to St. Louis with flexible booking policies on momondo?
All flight searches from Detroit to St. Louis on momondo can be filtered to show those which offer flexible booking policies.
How can momondo help me find flights from Detroit to St. Louis?
Once you have performed a search for Detroit to St. Louis flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.
I’m not ready to book a flight from Detroit to St. Louis right now. Can momondo alert me if prices change?
Yes momondo offers price alerts on flights to St. Louis from Detroit. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.