Cheap flights from St. Louis to Detroit from $30
This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from St. Louis to Detroit departing on 7/21. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
Discover deals from 900+ travel sites with momondo.
Save money when you book flights with momondo
Big names and deals
Big names and deals
Search 100s of travel sites to compare prices.Filter for what you want
Filter for what you want
Free Wi-Fi? Stopover? Instantly customize your results.Trusted and free
Trusted and free
We’re completely free to use - no hidden charges or fees.Price Alerts
Price Alerts
Not ready to book? to track prices.Find the cheapest flights from St. Louis to Detroit
Cheap round-trip flights
Cheap one-way flights
Cheap last minute flights
Cheap direct flights
Spirit Airlines flights from St. Louis to Detroit
Our best Spirit Airlines deals on St. Louis to Detroit flight tickets
United Airlines flights from St. Louis to Detroit
Our best United Airlines deals on St. Louis to Detroit flight tickets
See travel insights to Detroit from
How to get the cheapest flight ticket from St. Louis to Detroit
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 cheapest month to fly to Detroit?
The cheapest month to fly to Detroit from St. Louis is in April. Flight prices, which tend to average around $268, are often lower during this time because this is during the off-season. If you’re not able to fly to Detroit in April, then June is your next best option. Flight prices from St. Louis to Detroit during June average around $274.
What is the cheapest day to depart on your flight to Detroit?
On average, the least expensive day to fly to Detroit from St. Louis is on a Friday. momondo users have found tickets for Friday departures for as low as $510. However, this price may fluctuate depending on the airline, the season, and holidays. When flying out on a Monday, the most expensive travel day of the week, you can expect to see flight prices from St. Louis to Detroit for around $876.
What is the cheapest time of day to depart on your flight to Detroit?
In the evening is the cheapest time of day to fly from St. Louis to Detroit when you can find flight prices for as low as $299. Flying to Detroit in the evening is an ideal time because this is during off-peak travel hours. If you have a flexible travel schedule, then try to avoid flying at noon when prices are $1,030 on average. Flights to Detroit from St. Louis at noon are generally more expensive because this time of day is more convenient for travelers’ schedules.
What is the cheapest Lambert-St Louis to Detroit flight route?
Fly from Lambert-St Louis to Detroit Metropolitan Wayne County for the best Lambert-St Louis - Detroit flight prices
How far in advance should I book a flight to Detroit?
You are more likely to see cheaper flights to Detroit from St. Louis when booking 24 weeks ahead of your departure date. In general, you can expect to find flights to Detroit for around $313 when searching 24 weeks out.However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Detroit from St. Louis for as low as $140 on momondo.
What cabin class options are available on Lambert-St Louis to Detroit flights?
There are 4 cabin classes available to choose from on Lambert-St Louis to Detroit 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 St. Louis to Detroit flights?
No. A direct flight is the cheapest option for a flight between St. Louis to Detroit.
How have St. Louis to Detroit flight prices changed over time?
As of June 2025, prices for St. Louis to Detroit flights are approximately 48% more expensive when compared to flights at the same time last year.
What is the cheapest airline that flies from Lambert-St Louis to Detroit?
Spirit Airlines, Southwest, and Delta are the most popular carriers operating from Lambert-St Louis to Detroit
What airlines fly to Detroit?
Delta, Southwest and Spirit Airlines are the top three most popular airlines that fly to Detroit from St. Louis according to our data. Delta is the first choice among our users, with 74% of people opting to fly with this airline when traveling to Detroit. Keep in mind that there are 4 different airlines that fly to Detroit on a routine basis, so you have a few additional options to choose from.
How many flights depart from St. Louis to Detroit on average per day?
As of June 2025, there are 13 flights per day flying from St. Louis to Detroit. The most common time of day flights depart is 10:00AM, with 51% of flights taking off at noon.
How many flights depart from St. Louis to Detroit on average per week?
93 flights are operational weekly from St. Louis to Detroit as of June 2025. The most popular departure day for this route is Thu, with 20% of flights per week taking off on this day.
When to book flights from St. Louis to Detroit
Cheap St. Louis to Detroit (STL to DTT) flight deals and tips
Find info about flight duration, direct flights, and airports for your flight from St. Louis to Detroit
How far is Lambert-St Louis to Detroit by plane?
A flight from Lambert-St Louis to Detroit will travel around 454.1 mi. Typically, this will take 1h 28m by plane in normal conditions.
When did momondo last update prices for flights from Lambert-St Louis Airport to Detroit?
Prices for flights from Lambert-St Louis Airport to Detroit were last updated today.
How many operators does momondo search for flights from Lambert-St Louis Airport to Detroit?
As of June 2025, there are 4 operators available to choose from for flights from Lambert-St Louis Airport to Detroit.
How old do you have to be to fly from Lambert-St Louis Airport to Detroit?
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 Lambert-St Louis Airport to Detroit.
What documentation or ID do you need to fly to Detroit?
The necessary travel and health documents for your Detroit trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.
What is the most popular plane model from St. Louis to Detroit?
Based on momondo bookings for this flight route, the most popular plane model on flight routes from St. Louis to Detroit is Boeing 717-200 (24.58% of total bookings). The next most popular plane models are Boeing 737-700 Passenger/BBJ1 (winglets) (20.71%), Boeing 737 MAX 8 (13.40%), and Airbus A320neo (6.87%).
What is the most popular airline from St. Louis to Detroit?
Based on momondo bookings for this flight route, the most popular airline on flight routes from St. Louis to Detroit is Delta (70% of total bookings). The next most popular airlines are Southwest (22%), American Airlines (4%), and Spirit Airlines (4%).
Best airlines flying from St. Louis to Detroit
Compare and see reviews for airlines that fly from St. Louis to Detroit with momondo
| Airline | Rating | Free Cancellation | Price | ||
|---|---|---|---|---|---|
| PriceFrom $37 | Free Cancellation | Rating 6.3 8,052 reviews | |||
| PriceFrom $170 | Free Cancellation | Rating 8.0 4,287 reviews | |||
| PriceFrom $201 | Free Cancellation | Rating 7.2 10,000 reviews | |||
| PriceFrom $211 | Free Cancellation | Rating 8.0 7,946 reviews |
Southwest Flights From St. Louis to Detroit
Southwest is one of the most popular airlines flying from St. Louis to Detroit, operating 10 flights/week on average for this route. A good Southwest flight deal for St. Louis to Detroit starts from $170 round-trip, up to an average price of $337. Our users have rated Southwest at 8.0/10.
Delta Flights From St. Louis to Detroit
Delta is also a popular choice for this route. Delta flight deals for St. Louis to Detroit start from as low as $211 round-trip, depending on your selected dates, with average Delta deals seen on momondo around $318. Delta operates 14 flights to Detroit from St. Louis in an average week. Users have rated it 8.0/10 across 7,950 reviews.
Traveling to a place near Detroit?
Book flights to Detroit if you plan to visit one of these locationsWhy use momondo?
Why should I use momondo to find a flight deal from St. Louis to Detroit?
It is quick and easy to find St. Louis to Detroit flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to Detroit that suits you.
Can I find flights from St. Louis to Detroit with flexible booking policies on momondo?
Yes. All flights to Detroit from St. Louis on momondo can be compared and filtered by various policies on offer, including flexible booking.
How can momondo help me find flights from St. Louis to Detroit?
momondo provides multiple filters to help you find the best flight to Detroit from St. Louis. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.
I’m not ready to book a flight from St. Louis to Detroit right now. Can momondo alert me if prices change?
Of course. momondo tracks the price of St. Louis to Detroit flights. All you need is a valid email address and we will do the rest; it is that quick and easy.