$232 Cheap Flights from Monroe (MLU) to St. Louis (STL)

View $232 flight on Mon, Nov 10, 2025Opens in a new window

Popular airlines from Monroe, LA (MLU-Monroe Regional) to St. Louis Lambert Intl. Airport (STL)

Cheap Flights from Monroe to St. Louis (MLU-STL)

Prices were available within the past 7 days and start at $232 for one-way flights and $238 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Tue, Nov 18 - Sat, Dec 6
MLU
Monroe
STL
St. Louis
$238 Roundtrip, found 1 day ago
$238
Roundtrip
found 1 day ago
Select Delta flight, departing Tue, Nov 18 from Monroe to St. Louis, returning Sat, Dec 6, priced at $238 found 1 day ago
Delta
Sat, Nov 1 - Sun, Nov 16
MLU
Monroe
STL
St. Louis
$243 Roundtrip, found 1 day ago
$243
Roundtrip
found 1 day ago
Select Delta flight, departing Sat, Nov 1 from Monroe to St. Louis, returning Sun, Nov 16, priced at $243 found 1 day ago
Delta
Thu, Nov 27 - Wed, Dec 3
MLU
Monroe
STL
St. Louis
$258 Roundtrip, found 1 day ago
$258
Roundtrip
found 1 day ago
Select Delta flight, departing Thu, Nov 27 from Monroe to St. Louis, returning Wed, Dec 3, priced at $258 found 1 day ago
Delta
Sat, Oct 25 - Sat, Nov 1
MLU
Monroe
STL
St. Louis
$263 Roundtrip, found 1 day ago
$263
Roundtrip
found 1 day ago
Select Delta flight, departing Sat, Oct 25 from Monroe to St. Louis, returning Sat, Nov 1, priced at $263 found 1 day ago
American Airlines
Mon, Oct 27 - Mon, Nov 3
MLU
Monroe
STL
St. Louis
$263 Roundtrip, found 16 hours ago
$263
Roundtrip
found 16 hours ago
Select American Airlines flight, departing Mon, Oct 27 from Monroe to St. Louis, returning Mon, Nov 3, priced at $263 found 16 hours ago
Delta
Tue, Oct 21 - Sat, Nov 8
MLU
Monroe
STL
St. Louis
$268 Roundtrip, found 1 day ago
$268
Roundtrip
found 1 day ago
Select Delta flight, departing Tue, Oct 21 from Monroe to St. Louis, returning Sat, Nov 8, priced at $268 found 1 day ago
Delta
Tue, Oct 21 - Sat, Nov 1
MLU
Monroe
STL
St. Louis
$273 Roundtrip, found 1 day ago
$273
Roundtrip
found 1 day ago
Select Delta flight, departing Tue, Oct 21 from Monroe to St. Louis, returning Sat, Nov 1, priced at $273 found 1 day ago
Delta
Sat, Oct 25 - Tue, Oct 28
MLU
Monroe
STL
St. Louis
$278 Roundtrip, found 1 day ago
$278
Roundtrip
found 1 day ago
Select Delta flight, departing Sat, Oct 25 from Monroe to St. Louis, returning Tue, Oct 28, priced at $278 found 1 day ago
Delta
Tue, Oct 21 - Sat, Oct 25
MLU
Monroe
STL
St. Louis
$288 Roundtrip, found 1 day ago
$288
Roundtrip
found 1 day ago
Select Delta flight, departing Tue, Oct 21 from Monroe to St. Louis, returning Sat, Oct 25, priced at $288 found 1 day ago
American Airlines
Fri, Nov 28 - Wed, Dec 3
MLU
Monroe
STL
St. Louis
$298 Roundtrip, found 1 day ago
$298
Roundtrip
found 1 day ago
Select American Airlines flight, departing Fri, Nov 28 from Monroe to St. Louis, returning Wed, Dec 3, priced at $298 found 1 day ago

Alternative airports near St. Louis

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Lambert-St. Louis Intl. STL. Cheapest option available. Average driving time to city center is 20 minutes. Flights from $258
STL
Lambert-St. Louis Intl.
Cheapest
Average driving time to city center20 min
Flights from $258

Frequently asked questions

How much does a flight from Monroe Regional Airport (MLU) to Lambert-St. Louis Intl. Airport (STL) cost?
Secure a cheap one-way flight from $232 or cheap return flight from $238 from Monroe Regional Airport (MLU) to Lambert-St. Louis Intl. Airport (STL) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to see our cheapest flight deals on this route.
What is the cheapest month to fly from Monroe Regional Airport (MLU) to Lambert-St. Louis Intl. Airport (STL)?
November is the cheapest month to fly from MLU to STL. Avoiding peak travel times is often the key to landing a great deal.
What is the cheapest airline that flies from Monroe Regional Airport (MLU) to Lambert-St. Louis Intl. Airport (STL)?
To find the cheapest airline flying from MLU to STL, use Expedia's filter tool. Tailor your search based on your travel needs, such as preferred carriers and ideal departure window. You can then sort your results by "Price (lowest to highest)" to list the most affordable options first.
How many flights per day from Monroe Regional Airport (MLU) to Lambert-St. Louis Intl. Airport (STL)?
You'll have to book a flight with a layover when traveling from Monroe Regional Airport (MLU) to Lambert-St. Louis Intl. Airport (STL). There are no daily direct flights on this route. However, simply filter your search to include one or more stops to find an option that works for you.
What day of the week has the most flights from MLU to STL?
You'll typically find Tuesday the quietest day for flights, while Fridays are often the busiest.* However this can change from season to season and during peak travel times or public holidays.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Monroe Regional Airport (MLU) to Lambert-St. Louis Intl. Airport (STL)?
To reach Lambert-St. Louis Intl. Airport (STL) without delays, choose a flight that leaves from Monroe Regional Airport (MLU) before 3 PM. The likelihood of cancellations is 22% higher, on average, for departures after this time.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
Is it cheaper to buy a plane ticket from Monroe Regional Airport (MLU) to Lambert-St. Louis Intl. Airport (STL) last-minute?
Last-minute bookings from MLU to STL are usually more expensive. To secure the lowest rates, start looking for flights as early as possible. That said, if your travel plans are flexible, you may score a cheap fare just before your departure.
Is it cheaper to book a MLU to STL flight and hotel package?
Booking a MLU to STL flight and hotel package tends to be cheaper than booking separately. With Expedia, you can enjoy the convenience of organizing your travels in one place. Select from our extensive range of hotels and then add car rentals, flights and activities to your booking. Bundle everything together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Monroe Regional Airport (MLU) to Lambert-St. Louis Intl. Airport (STL)?
Typically, it's possible to reschedule or cancel your MLU to STL flight. However, if the booking was made more than 24 hours ago, additional charges may apply. Refer to your airline's policies in your itinerary to see what changes are allowed and whether any costs are involved. You'll also find further details on our Customer Service portal.

Travel information

Origin airport
Monroe Regional
Destination airport
Lambert-St. Louis Intl.
Airlines serving
American Airlines, Delta
Roundtrip price
$238
Distance
440 mi

Book with confidence

Monroe to St. Louis Flights

The cheapest times to fly from Monroe to St. Louis

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Monroe to St. Louis are during the month of November. You can find some of the cheapest flights from Monroe to St. Louis with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Monroe to St. Louis

Sunday is one of the best days to book for cheap flights from Monroe to St. Louis: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Monroe to St. Louis

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Monroe to St. Louis in 2025. You can also book with separate airlines for your outbound and return journeys, from $232 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Monroe to St. Louis flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Monroe to St. Louis airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Monroe to St. Louis Flights

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*Available to One Key members.