$354 Cheap Flights from Morelia (MLM) to St. Louis (STL)

View $354 flight on Wed, Apr 8, 2026Opens in a new window

Popular airlines from General Francisco Mujica Intl. Airport (MLM) to St. Louis Lambert Intl. Airport (STL)

Cheap Flights from Morelia to St. Louis (MLM-STL)

Prices were available within the past 7 days and start at $354 for one-way flights and $501 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

United
Tue, Dec 23 - Sun, Jan 11
MLM
Morelia
STL
St. Louis
$501 Roundtrip, found 1 day ago
$501
Roundtrip
found 1 day ago
Select United flight, departing Tue, Dec 23 from Morelia to St. Louis, returning Sun, Jan 11, priced at $501 found 1 day ago
United
Tue, Dec 23 - Sun, Jan 11
MLM
Morelia
STL
St. Louis
$508 Roundtrip, found 1 day ago
$508
Roundtrip
found 1 day ago
Select United flight, departing Tue, Dec 23 from Morelia to St. Louis, returning Sun, Jan 11, priced at $508 found 1 day ago
United
Tue, Dec 23 - Sun, Jan 11
MLM
Morelia
STL
St. Louis
$510 Roundtrip, found 1 day ago
$510
Roundtrip
found 1 day ago
Select United flight, departing Tue, Dec 23 from Morelia to St. Louis, returning Sun, Jan 11, priced at $510 found 1 day ago
United
Tue, Dec 23 - Sun, Jan 11
MLM
Morelia
STL
St. Louis
$512 Roundtrip, found 1 day ago
$512
Roundtrip
found 1 day ago
Select United flight, departing Tue, Dec 23 from Morelia to St. Louis, returning Sun, Jan 11, priced at $512 found 1 day ago
American Airlines
Tue, Dec 23 - Sun, Jan 11
MLM
Morelia
STL
St. Louis
$518 Roundtrip, found 1 day ago
$518
Roundtrip
found 1 day ago
Select American Airlines flight, departing Tue, Dec 23 from Morelia to St. Louis, returning Sun, Jan 11, priced at $518 found 1 day ago
United
Tue, Dec 23 - Sun, Jan 11
MLM
Morelia
STL
St. Louis
$519 Roundtrip, found 1 day ago
$519
Roundtrip
found 1 day ago
Select United flight, departing Tue, Dec 23 from Morelia to St. Louis, returning Sun, Jan 11, priced at $519 found 1 day ago
United
Tue, Dec 23 - Sun, Jan 11
MLM
Morelia
STL
St. Louis
$520 Roundtrip, found 1 day ago
$520
Roundtrip
found 1 day ago
Select United flight, departing Tue, Dec 23 from Morelia to St. Louis, returning Sun, Jan 11, priced at $520 found 1 day ago
United
Tue, Dec 23 - Sun, Jan 11
MLM
Morelia
STL
St. Louis
$525 Roundtrip, found 1 day ago
$525
Roundtrip
found 1 day ago
Select United flight, departing Tue, Dec 23 from Morelia to St. Louis, returning Sun, Jan 11, priced at $525 found 1 day ago
Delta
Wed, Dec 24 - Sun, Jan 11
MLM
Morelia
STL
St. Louis
$555 Roundtrip, found 5 days ago
$555
Roundtrip
found 5 days ago
Select Delta flight, departing Wed, Dec 24 from Morelia to St. Louis, returning Sun, Jan 11, priced at $555 found 5 days ago
Aeromexico
Thu, Dec 4 - Tue, Mar 17
MLM
Morelia
STL
St. Louis
$763 Roundtrip, found 3 days ago
$763
Roundtrip
found 3 days ago
Select Aeromexico flight, departing Thu, Dec 4 from Morelia to St. Louis, returning Tue, Mar 17, priced at $763 found 3 days ago

Find the cheapest month to fly from Morelia (MLM) to St. Louis (STL)

May is typically the cheapest month to fly

From $445 - $1,110 per traveler.

Frequently asked questions

How much does a flight from General Francisco Mujica Intl. Airport (MLM) to Lambert-St. Louis Intl. Airport (STL) cost?
Secure a cheap one-way flight from $354 or cheap return flight from $501 from General Francisco Mujica Intl. Airport (MLM) to Lambert-St. Louis Intl. Airport (STL) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to find our cheapest flight deals on this route.
What is the cheapest month to fly from General Francisco Mujica Intl. Airport (MLM) to Lambert-St. Louis Intl. Airport (STL)?
Flying in December may help you find better deals, as it's the cheapest month for flights between MLM and STL. You'll often find the lowest fares during the off-season.
What is the cheapest airline that flies from General Francisco Mujica Intl. Airport (MLM) to Lambert-St. Louis Intl. Airport (STL)?
Expedia's filter tool lets you easily compare different airlines, departure times and fares all in one place. Tailor the search to your trip, then sort by "Price (lowest to highest)" to see which carrier offers the cheapest MLM to STL flight.
How many flights per day from General Francisco Mujica Intl. Airport (MLM) to Lambert-St. Louis Intl. Airport (STL)?
Nonstop flights from General Francisco Mujica Intl. Airport (MLM) to Lambert-St. Louis Intl. Airport (STL) aren't available daily, so you'll have to take a flight with a layover. Explore your options with Expedia's filters. Enter your dates and pick either "1 Stop" or "2+ Stops."
What day of the week has the most flights from MLM to STL?
You'll usually find Tuesday the quietest day for flights, while Fridays tend to be the busiest.* However this can vary 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 General Francisco Mujica Intl. Airport (MLM) to Lambert-St. Louis Intl. Airport (STL)?
To avoid possible delays on the General Francisco Mujica Intl. Airport (MLM) to Lambert-St. Louis Intl. Airport (STL) route, fly before 3 PM. Flights after this time have a 22% higher chance of cancellation.**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 General Francisco Mujica Intl. Airport (MLM) to Lambert-St. Louis Intl. Airport (STL) last-minute?
Booking your ticket from MLM to STL right before your journey is generally more expensive. But if there's some wiggle room with your departure dates and times, you could snag a cheap last-minute fare.
Is it cheaper to book a MLM to STL flight and hotel package?
Compared with arranging hotels and flights separately, booking a MLM to STL flight and hotel package with Expedia could lead to significant savings. What's more, having it all in one place takes the hassle out of travel planning. Just pick your flights and select from our wide range of stays, then tailor your trip with extras like tours and car rentals.
Can I cancel or change the date of my flight from General Francisco Mujica Intl. Airport (MLM) to Lambert-St. Louis Intl. Airport (STL)?
In most instances, you can modify or cancel your MLM to STL flight. However, there may be additional fees, especially if your booking was made more than 24 hours ago. Check your itinerary for the airline's guidelines and fees on flight changes, or if you want more details, go to our Customer Service portal.

Travel information

Origin airport
General Francisco Mujica Intl.
Destination airport
Lambert-St. Louis Intl.
Roundtrip price
$501
Distance
1452 mi

Book with confidence

Morelia to St. Louis Flights

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

 

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

Sunday is one of the best days to book for cheap flights from Morelia 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 Morelia 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 Morelia to St. Louis in 2025. You can also book with separate airlines for your outbound and return journeys, from $354 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 Morelia 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 Morelia 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.

 

Morelia to St. Louis Flights

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*Available to One Key members.