$170 Cheap Flights from Montgomery (MGM) to St. Louis (STL)

View $170 flight on Mon, Oct 27, 2025Opens in a new window

Popular airlines from Montgomery Regional Airport (MGM) to St. Louis Lambert Intl. Airport (STL)

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Cheap Flights from Montgomery to St. Louis (MGM-STL)

Prices were available within the past 7 days and start at $170 for one-way flights and $296 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Tue, Oct 28 - Wed, Nov 12
MGM
Montgomery
STL
St. Louis
$296 Roundtrip, found 15 hours ago
$296
Roundtrip
found 15 hours ago
Select Delta flight, departing Tue, Oct 28 from Montgomery to St. Louis, returning Wed, Nov 12, priced at $296 found 15 hours ago
American Airlines
Wed, Oct 29 - Sat, Nov 1
MGM
Montgomery
STL
St. Louis
$306 Roundtrip, found 1 day ago
$306
Roundtrip
found 1 day ago
Select American Airlines flight, departing Wed, Oct 29 from Montgomery to St. Louis, returning Sat, Nov 1, priced at $306 found 1 day ago
Delta
Mon, Oct 27 - Sun, Nov 2
MGM
Montgomery
STL
St. Louis
$316 Roundtrip, found 14 hours ago
$316
Roundtrip
found 14 hours ago
Select Delta flight, departing Mon, Oct 27 from Montgomery to St. Louis, returning Sun, Nov 2, priced at $316 found 14 hours ago
Delta
Tue, Oct 28 - Mon, Nov 3
MGM
Montgomery
STL
St. Louis
$318 Roundtrip, found 15 hours ago
$318
Roundtrip
found 15 hours ago
Select Delta flight, departing Tue, Oct 28 from Montgomery to St. Louis, returning Mon, Nov 3, priced at $318 found 15 hours ago
Delta
Fri, Oct 17 - Sat, Nov 1
MGM
Montgomery
STL
St. Louis
$326 Roundtrip, found 15 hours ago
$326
Roundtrip
found 15 hours ago
Select Delta flight, departing Fri, Oct 17 from Montgomery to St. Louis, returning Sat, Nov 1, priced at $326 found 15 hours ago
Delta
Mon, Oct 27 - Sun, Nov 2
MGM
Montgomery
STL
St. Louis
$328 Roundtrip, found 14 hours ago
$328
Roundtrip
found 14 hours ago
Select Delta flight, departing Mon, Oct 27 from Montgomery to St. Louis, returning Sun, Nov 2, priced at $328 found 14 hours ago
American Airlines
Sat, Nov 15 - Wed, Nov 19
MGM
Montgomery
STL
St. Louis
$331 Roundtrip, found 6 days ago
$331
Roundtrip
found 6 days ago
Select American Airlines flight, departing Sat, Nov 15 from Montgomery to St. Louis, returning Wed, Nov 19, priced at $331 found 6 days ago
American Airlines
Tue, Nov 4 - Fri, Nov 7
MGM
Montgomery
STL
St. Louis
$333 Roundtrip, found 6 days ago
$333
Roundtrip
found 6 days ago
Select American Airlines flight, departing Tue, Nov 4 from Montgomery to St. Louis, returning Fri, Nov 7, priced at $333 found 6 days ago
Delta
Sat, Oct 11 - Tue, Oct 28
MGM
Montgomery
STL
St. Louis
$336 Roundtrip, found 15 hours ago
$336
Roundtrip
found 15 hours ago
Select Delta flight, departing Sat, Oct 11 from Montgomery to St. Louis, returning Tue, Oct 28, priced at $336 found 15 hours ago
Delta
Fri, Oct 17 - Mon, Nov 3
MGM
Montgomery
STL
St. Louis
$338 Roundtrip, found 15 hours ago
$338
Roundtrip
found 15 hours ago
Select Delta flight, departing Fri, Oct 17 from Montgomery to St. Louis, returning Mon, Nov 3, priced at $338 found 15 hours 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 $336
STL
Lambert-St. Louis Intl.
Cheapest
Average driving time to city center20 min
Flights from $336

Frequently asked questions

How much does a flight from Montgomery Regional Airport (MGM) to Lambert-St. Louis Intl. Airport (STL) cost?
Grab a cheap one-way flight from $170 or cheap return flight from $296 from Montgomery Regional Airport (MGM) 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 offers on this route.
What is the cheapest month to fly from Montgomery Regional Airport (MGM) to Lambert-St. Louis Intl. Airport (STL)?
The cheapest month to fly from MGM to STL is October, when there's less demand. Off-peak months are often when better flight deals are available between these airports.
What is the cheapest airline that flies from Montgomery Regional Airport (MGM) to Lambert-St. Louis Intl. Airport (STL)?
Use the filters on Expedia to compare airlines and find the cheapest carrier that'll take you from MGM to STL. Then, sort your results by "Price (lowest to highest)" to score a great deal.
How many flights per day from Montgomery Regional Airport (MGM) to Lambert-St. Louis Intl. Airport (STL)?
You'll need to catch a flight with a layover when traveling from Montgomery Regional Airport (MGM) to Lambert-St. Louis Intl. Airport (STL). There are no daily direct flights on this route. However, just filter your search to include one or more stops to find the best option for your trip.
What day of the week has the most flights from MGM to STL?
Friday is usually the busiest day for flights, while Tuesday tends to be the quietest.* Keep in mind that flight schedules can change based on a number of factors, such as the airline and season.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Montgomery Regional Airport (MGM) to Lambert-St. Louis Intl. Airport (STL)?
To avoid possible delays on the Montgomery Regional Airport (MGM) to Lambert-St. Louis Intl. Airport (STL) route, fly before 3 PM. Later flights are 22% more likely to be canceled.**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 Montgomery Regional Airport (MGM) to Lambert-St. Louis Intl. Airport (STL) last-minute?
Booking your plane ticket from MGM to STL right before your journey is typically more expensive. But if you're flexible with your travel times and dates, you could snag a cheap last-minute fare.
Is it cheaper to book a MGM to STL flight and hotel package?
Compared with arranging flights and hotels separately, booking a MGM to STL flight and hotel package with Expedia could lead to significant savings. What's more, having everything in one convenient place will take the stress out of travel planning. Simply secure your flights and select from our wide range of stays, then tailor your trip with extras like car rentals and activities.
Can I cancel or change the date of my flight from Montgomery Regional Airport (MGM) to Lambert-St. Louis Intl. Airport (STL)?
If you booked your MGM to STL flight in the last 24 hours, you may be able to modify or cancel it without fees. Depending on the airline and the fare type you purchased, additional charges may apply for changes beyond that time. Airline policies and contact information can be found in your itinerary or confirmation email. Or, head to our Customer Service portal for further details.

Travel information

Travel information

Origin airport
Montgomery Regional
Destination airport
Lambert-St. Louis Intl.
Airlines serving
American Airlines, Delta
Roundtrip price
$296
Distance
497 mi

Book with confidence

Book with confidence

Montgomery to St. Louis Flights

The cheapest times to fly from Montgomery 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 Montgomery to St. Louis are during the month of October. You can find some of the cheapest flights from Montgomery to St. Louis with Expedia's search tool and vast selection of airlines.

 

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

Sunday is one of the best days to book for cheap flights from Montgomery 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 Montgomery 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 Montgomery to St. Louis in 2025. You can also book with separate airlines for your outbound and return journeys, from $170 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 Montgomery 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 Montgomery 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.

 

Montgomery to St. Louis Flights

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Explore a world of travel with Expedia

*Available to One Key members.