$100 Cheap Flights from McAllen (MFE) to St. Louis (STL)

View $100 flight on Fri, Jul 4, 2025Opens in a new window

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Find available prices by choosing your travel dates.

Cheap Flights from McAllen to St. Louis (MFE-STL)

Prices were available within the past 7 days and start at $100 for one-way flights and $219 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Tue, Jun 3 - Wed, Jun 4
MFE
McAllen
STL
St. Louis
$219 Roundtrip, found 3 days ago
$219
Roundtrip
found 3 days ago
Select Delta flight, departing Tue, Jun 3 from McAllen to St. Louis, returning Wed, Jun 4, priced at $219 found 3 days ago
United
Fri, Jul 4 - Mon, Jul 7
MFE
McAllen
STL
St. Louis
$221 Roundtrip, found 3 hours ago
$221
Roundtrip
found 3 hours ago
Select United flight, departing Fri, Jul 4 from McAllen to St. Louis, returning Mon, Jul 7, priced at $221 found 3 hours ago
Delta
Tue, May 13 - Thu, May 29
MFE
McAllen
STL
St. Louis
$223 Roundtrip, found 3 days ago
$223
Roundtrip
found 3 days ago
Select Delta flight, departing Tue, May 13 from McAllen to St. Louis, returning Thu, May 29, priced at $223 found 3 days ago
United
Mon, May 12 - Tue, May 13
MFE
McAllen
STL
St. Louis
$224 Roundtrip, found 3 days ago
$224
Roundtrip
found 3 days ago
Select United flight, departing Mon, May 12 from McAllen to St. Louis, returning Tue, May 13, priced at $224 found 3 days ago
Delta
Sun, May 11 - Thu, May 29
MFE
McAllen
STL
St. Louis
$228 Roundtrip, found 3 days ago
$228
Roundtrip
found 3 days ago
Select Delta flight, departing Sun, May 11 from McAllen to St. Louis, returning Thu, May 29, priced at $228 found 3 days ago
Delta
Mon, May 12 - Tue, May 13
MFE
McAllen
STL
St. Louis
$229 Roundtrip, found 3 days ago
$229
Roundtrip
found 3 days ago
Select Delta flight, departing Mon, May 12 from McAllen to St. Louis, returning Tue, May 13, priced at $229 found 3 days ago
Delta
Thu, May 29 - Wed, Jul 9
MFE
McAllen
STL
St. Louis
$231 Roundtrip, found 22 hours ago
$231
Roundtrip
found 22 hours ago
Select Delta flight, departing Thu, May 29 from McAllen to St. Louis, returning Wed, Jul 9, priced at $231 found 22 hours ago
Delta
Mon, May 12 - Thu, May 29
MFE
McAllen
STL
St. Louis
$235 Roundtrip, found 3 days ago
$235
Roundtrip
found 3 days ago
Select Delta flight, departing Mon, May 12 from McAllen to St. Louis, returning Thu, May 29, priced at $235 found 3 days ago
Delta
Sat, May 10 - Mon, May 19
MFE
McAllen
STL
St. Louis
$236 Roundtrip, found 4 days ago
$236
Roundtrip
found 4 days ago
Select Delta flight, departing Sat, May 10 from McAllen to St. Louis, returning Mon, May 19, priced at $236 found 4 days ago
American Airlines
Wed, Jun 4 - Sat, Jun 7
MFE
McAllen
STL
St. Louis
$267 Roundtrip, found 3 days ago
$267
Roundtrip
found 3 days ago
Select American Airlines flight, departing Wed, Jun 4 from McAllen to St. Louis, returning Sat, Jun 7, priced at $267 found 3 days ago

Frequently asked questions

How much does a flight from Miller Intl. Airport (MFE) to Lambert-St. Louis Intl. Airport (STL) cost?
Discover the latest flight deals from MFE to STL by entering your preferred travel dates and searching on Expedia. Easily compare prices by departure date if you have flexibility with your schedule and use handy filters to explore prices for your preferred journey. As a member of One Key™, our free loyalty program, you can use Price Tracking to watch fares and receive notifications if prices go up or down.
What is the cheapest month to fly from MFE to STL?
The cheapest flights from MFE to STL are usually during off-peak season, when demand is lower. To save money, avoid flying during public holidays, school breaks and major local events.
What is the cheapest airline that flies from MFE to STL?
Use the filter tool on Expedia to compare airlines and find the cheapest carrier that’ll take you from MFE to STL. Sort your results by “Price (lowest to highest)” to snap up a great deal.
How many flights per day from Miller Intl. Airport (MFE) to Lambert-St. Louis Intl. Airport (STL)?
There aren’t any daily nonstop flights available from Miller Intl. Airport (MFE) to Lambert-St. Louis Intl. Airport (STL). But you can opt for flights with layovers. Filter your search results on Expedia to include one or more stops, and you’ll be soaring above the clouds in no time.
What day of the week has the most flights from MFE to STL?
Typically you’ll have the most choice when it comes to flights on a Friday. Tuesdays tend to be the quietest.* However, this can change depending on the season, carrier 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 Miller Intl. Airport (MFE) to Lambert-St. Louis Intl. Airport (STL)?
Opt for a flight from Miller Intl. Airport (MFE) to Lambert-St. Louis Intl. Airport (STL) that leaves before 3 PM to reduce the likelihood of delays. Departures later than this are on average 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 Miller Intl. Airport (MFE) to Lambert-St. Louis Intl. Airport (STL) last-minute?
Booking your plane ticket from MFE to STL shortly before your trip is typically more expensive. But if there’s some wiggle room with your departure times and dates, you could land a cheap last-minute fare.
Is it cheaper to book a MFE to STL flight and hotel package?
Compared with arranging flights and hotels separately, booking a MFE to STL flight and hotel package with Expedia could lead to significant savings. Better yet, having everything in one place takes the hassle out of travel planning. Just pick your flights and select from our wide range of hotels, then personalize your trip with other add-ons like tours, activities and car rentals.
Can I cancel or change the date of my flight from Miller Intl. Airport (MFE) to Lambert-St. Louis Intl. Airport (STL)?
It’s generally possible to reschedule or cancel your MFE to STL flight. However, if the booking was made more than 24 hours ago, additional fees may apply. Check your airline’s policies in your itinerary to see what changes are allowed and if any costs are involved. You’ll also find more details on our Customer Service portal.
*Available to One Key members.