$238 Cheap Flights from St. Louis (STL) to Monroe (MLU)

View $238 flight on Sat, Jan 17, 2026Opens in a new window

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

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

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

American Airlines
Thu, Dec 4 - Sun, Dec 7
STL
St. Louis
MLU
Monroe
$238 Roundtrip, just found
$238
Roundtrip
just found
Select American Airlines flight, departing Thu, Dec 4 from St. Louis to Monroe, returning Sun, Dec 7, priced at $238 just found
Delta
Tue, Dec 2 - Sun, Dec 7
STL
St. Louis
MLU
Monroe
$268 Roundtrip, found 1 day ago
$268
Roundtrip
found 1 day ago
Select Delta flight, departing Tue, Dec 2 from St. Louis to Monroe, returning Sun, Dec 7, priced at $268 found 1 day ago
Delta
Sat, Jan 31 - Thu, Feb 12
STL
St. Louis
MLU
Monroe
$273 Roundtrip, found 1 day ago
$273
Roundtrip
found 1 day ago
Select Delta flight, departing Sat, Jan 31 from St. Louis to Monroe, returning Thu, Feb 12, priced at $273 found 1 day ago
Delta
Thu, Dec 4 - Sun, Dec 7
STL
St. Louis
MLU
Monroe
$277 Roundtrip, just found
$277
Roundtrip
just found
Select Delta flight, departing Thu, Dec 4 from St. Louis to Monroe, returning Sun, Dec 7, priced at $277 just found
Delta
Sat, Nov 8 - Mon, Nov 24
STL
St. Louis
MLU
Monroe
$283 Roundtrip, found 3 days ago
$283
Roundtrip
found 3 days ago
Select Delta flight, departing Sat, Nov 8 from St. Louis to Monroe, returning Mon, Nov 24, priced at $283 found 3 days ago
Delta
Wed, Nov 12 - Wed, Nov 19
STL
St. Louis
MLU
Monroe
$288 Roundtrip, found 6 hours ago
$288
Roundtrip
found 6 hours ago
Select Delta flight, departing Wed, Nov 12 from St. Louis to Monroe, returning Wed, Nov 19, priced at $288 found 6 hours ago
American Airlines
Thu, Dec 4 - Sun, Dec 7
STL
St. Louis
MLU
Monroe
$298 Roundtrip, just found
$298
Roundtrip
just found
Select American Airlines flight, departing Thu, Dec 4 from St. Louis to Monroe, returning Sun, Dec 7, priced at $298 just found
Delta
Thu, Dec 25 - Thu, Jan 8
STL
St. Louis
MLU
Monroe
$302 Roundtrip, found 1 day ago
$302
Roundtrip
found 1 day ago
Select Delta flight, departing Thu, Dec 25 from St. Louis to Monroe, returning Thu, Jan 8, priced at $302 found 1 day ago
American Airlines
Mon, Jan 19 - Sat, Feb 7
STL
St. Louis
MLU
Monroe
$304 Roundtrip, found 1 day ago
$304
Roundtrip
found 1 day ago
Select American Airlines flight, departing Mon, Jan 19 from St. Louis to Monroe, returning Sat, Feb 7, priced at $304 found 1 day ago
Delta
Wed, Nov 12 - Tue, Nov 18
STL
St. Louis
MLU
Monroe
$308 Roundtrip, found 6 hours ago
$308
Roundtrip
found 6 hours ago
Select Delta flight, departing Wed, Nov 12 from St. Louis to Monroe, returning Tue, Nov 18, priced at $308 found 6 hours ago

Find the cheapest month to fly from St. Louis (STL) to Monroe (MLU)

May is typically the cheapest month to fly

From $238 - $458 per traveler.

Alternative airports near Monroe

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

Select flight to Monroe Regional MLU. Cheapest and Closest option available. Average driving time to city center is 9 minutes. Flights from $433
MLU
Monroe Regional
CheapestClosest
Average driving time to city center9 min
Flights from $433

Frequently asked questions

How much does a flight from Lambert-St. Louis Intl. Airport (STL) to Monroe Regional Airport (MLU) cost?
Lock in a cheap one-way flight from $238 or cheap return flight from $238 from Lambert-St. Louis Intl. Airport (STL) to Monroe Regional Airport (MLU) 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 Lambert-St. Louis Intl. Airport (STL) to Monroe Regional Airport (MLU)?
December is the cheapest month to fly from STL to MLU. Avoiding peak travel times is often the key to finding a great deal.
What is the cheapest airline that flies from Lambert-St. Louis Intl. Airport (STL) to Monroe Regional Airport (MLU)?
Use the filter tool on Expedia to compare airlines and find the most affordable carrier that'll fly you from STL to MLU. Then, sort your results by "Price (lowest to highest)" to score the best deal available.
How many flights per day from Lambert-St. Louis Intl. Airport (STL) to Monroe Regional Airport (MLU)?
There are no daily nonstop flights departing from Lambert-St. Louis Intl. Airport (STL) to Monroe Regional Airport (MLU). But you can book flights with layovers. Filter your search results on Expedia to include one or more stops, and you'll be on your way in no time at all.
What day of the week has the most flights from STL to MLU?
Typically you'll find the largest variety of flight choices on a Friday. Tuesdays are often the quietest.* But this can vary based on the season, airline and other factors.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Lambert-St. Louis Intl. Airport (STL) to Monroe Regional Airport (MLU)?
To land at Monroe Regional Airport (MLU) on time, select a flight that leaves Lambert-St. Louis Intl. Airport (STL) before 3 PM. The chance of cancellations is 22% higher, on average, for departures after this hour.**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 Lambert-St. Louis Intl. Airport (STL) to Monroe Regional Airport (MLU) last-minute?
Last-minute fares from STL to MLU are generally more expensive. To secure the lowest prices, start looking for flights early. That being said, if you're flexible with your travel plans, it's possible to land a cheap ticket right before your trip.
Is it cheaper to book a STL to MLU flight and hotel package?
Compared with arranging flights and hotels separately, booking a STL to MLU flight and hotel package with Expedia could lead to significant savings. Better still, having everything in one convenient place will take the stress out of travel planning. Simply pick your flights and choose from our wide range of stays, then customize your trip with other add-ons like tours and car rentals.
Can I cancel or change the date of my flight from Lambert-St. Louis Intl. Airport (STL) to Monroe Regional Airport (MLU)?
Typically, it's possible to cancel or reschedule your STL to MLU flight. However, for bookings made more than 24 hours ago, additional fees may apply. Check your airline's policies in your itinerary to see what changes are possible and if any costs are involved. You'll also find further details on our Customer Service portal.

Travel information

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

Book with confidence

St. Louis to Monroe Flights

The cheapest times to fly from St. Louis to Monroe

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 St. Louis to Monroe are during the month of December. You can find some of the cheapest flights from St. Louis to Monroe with Expedia's search tool and vast selection of airlines.

 

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

Sunday is one of the best days to book for cheap flights from St. Louis to Monroe: 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 St. Louis to Monroe

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 St. Louis to Monroe in 2025. You can also book with separate airlines for your outbound and return journeys, from $238 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 St. Louis to Monroe 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 St. Louis to Monroe 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.

 

St. Louis to Monroe Flights

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*Available to One Key members.