$262 Cheap Flights from St. Louis (STL) to San Luis Potosi (SLP)

View $262 flight on Wed, Dec 31, 2025Opens in a new window

Popular airlines from St. Louis Lambert Intl. Airport (STL) to San Luis Potosi Intl. Airport (SLP)

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Cheap Flights from St. Louis to San Luis Potosi (STL-SLP)

Prices were available within the past 7 days and start at $262 for one-way flights and $502 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Aeromexico
Tue, Apr 7 - Mon, Apr 20
STL
St. Louis
SLP
San Luis Potosi
$502 Roundtrip, found 1 day ago
$502
Roundtrip
found 1 day ago
Select Aeromexico flight, departing Tue, Apr 7 from St. Louis to San Luis Potosi, returning Mon, Apr 20, priced at $502 found 1 day ago
Delta
Mon, Mar 23 - Mon, Apr 6
STL
St. Louis
SLP
San Luis Potosi
$502 Roundtrip, found 1 day ago
$502
Roundtrip
found 1 day ago
Select Delta flight, departing Mon, Mar 23 from St. Louis to San Luis Potosi, returning Mon, Apr 6, priced at $502 found 1 day ago
United
Mon, Feb 2 - Thu, Feb 12
STL
St. Louis
SLP
San Luis Potosi
$507 Roundtrip, found 4 days ago
$507
Roundtrip
found 4 days ago
Select United flight, departing Mon, Feb 2 from St. Louis to San Luis Potosi, returning Thu, Feb 12, priced at $507 found 4 days ago
Delta
Mon, Mar 16 - Tue, Mar 17
STL
St. Louis
SLP
San Luis Potosi
$509 Roundtrip, found 1 day ago
$509
Roundtrip
found 1 day ago
Select Delta flight, departing Mon, Mar 16 from St. Louis to San Luis Potosi, returning Tue, Mar 17, priced at $509 found 1 day ago
United
Mon, Feb 2 - Thu, Feb 12
STL
St. Louis
SLP
San Luis Potosi
$513 Roundtrip, found 4 days ago
$513
Roundtrip
found 4 days ago
Select United flight, departing Mon, Feb 2 from St. Louis to San Luis Potosi, returning Thu, Feb 12, priced at $513 found 4 days ago
American Airlines
Tue, Dec 2 - Wed, Dec 10
STL
St. Louis
SLP
San Luis Potosi
$519 Roundtrip, found 6 days ago
$519
Roundtrip
found 6 days ago
Select American Airlines flight, departing Tue, Dec 2 from St. Louis to San Luis Potosi, returning Wed, Dec 10, priced at $519 found 6 days ago
American Airlines
Mon, Feb 2 - Thu, Feb 12
STL
St. Louis
SLP
San Luis Potosi
$522 Roundtrip, found 4 days ago
$522
Roundtrip
found 4 days ago
Select American Airlines flight, departing Mon, Feb 2 from St. Louis to San Luis Potosi, returning Thu, Feb 12, priced at $522 found 4 days ago
Delta
Mon, Mar 23 - Sun, Apr 12
STL
St. Louis
SLP
San Luis Potosi
$522 Roundtrip, found 1 day ago
$522
Roundtrip
found 1 day ago
Select Delta flight, departing Mon, Mar 23 from St. Louis to San Luis Potosi, returning Sun, Apr 12, priced at $522 found 1 day ago
United
Tue, Dec 2 - Wed, Dec 10
STL
St. Louis
SLP
San Luis Potosi
$524 Roundtrip, found 6 days ago
$524
Roundtrip
found 6 days ago
Select United flight, departing Tue, Dec 2 from St. Louis to San Luis Potosi, returning Wed, Dec 10, priced at $524 found 6 days ago
United
Sun, Feb 1 - Wed, Feb 11
STL
St. Louis
SLP
San Luis Potosi
$527 Roundtrip, found 4 days ago
$527
Roundtrip
found 4 days ago
Select United flight, departing Sun, Feb 1 from St. Louis to San Luis Potosi, returning Wed, Feb 11, priced at $527 found 4 days ago

Alternative airports near San Luis Potosi

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

Select flight to Ponciano Arriaga Intl. SLP. Cheapest and Closest option available. Average driving time to city center is 17 minutes. Flights from $610
SLP
Ponciano Arriaga Intl.
CheapestClosest
Average driving time to city center17 min
Flights from $610

Frequently asked questions

How much does a flight from Lambert-St. Louis Intl. Airport (STL) to Ponciano Arriaga Intl. Airport (SLP) cost?
Snag a cheap one-way flight from $262 or cheap return flight from $502 from Lambert-St. Louis Intl. Airport (STL) to Ponciano Arriaga Intl. Airport (SLP) 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 Lambert-St. Louis Intl. Airport (STL) to Ponciano Arriaga Intl. Airport (SLP)?
Flying in April is a good way to save, as it's the cheapest month for flights between STL and SLP. You'll often find the lowest prices during off-peak months.
What is the cheapest airline that flies from Lambert-St. Louis Intl. Airport (STL) to Ponciano Arriaga Intl. Airport (SLP)?
To find the cheapest airline that'll fly you from STL to SLP, use Expedia's filter tool. Customize 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 Lambert-St. Louis Intl. Airport (STL) to Ponciano Arriaga Intl. Airport (SLP)?
There are no daily nonstop flights from Lambert-St. Louis Intl. Airport (STL) to Ponciano Arriaga Intl. Airport (SLP). But you can choose flights with layovers. Filter your search results on Expedia to include one or two stops, and you'll be soaring above the clouds in no time.
What day of the week has the most flights from STL to SLP?
Friday is typically the busiest day for flights, while Tuesday is often the quietest.* Keep in mind that flight schedules can change depending on a number of factors, including the time of year and carrier.*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 Ponciano Arriaga Intl. Airport (SLP)?
Opt for a flight from Lambert-St. Louis Intl. Airport (STL) to Ponciano Arriaga Intl. Airport (SLP) that leaves before 3 PM to reduce the risk of cancellations. Later departures 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 Lambert-St. Louis Intl. Airport (STL) to Ponciano Arriaga Intl. Airport (SLP) last-minute?
Holding off until right before your break to book a ticket from STL to SLP generally means paying more. While you might find some last-minute deals, they aren't always guaranteed. Keep your travel schedule open to boost your chances of landing a bargain.
Is it cheaper to book a STL to SLP flight and hotel package?
Compared with arranging flights and hotels separately, booking a STL to SLP flight and hotel package with Expedia could result in significant savings. What's more, managing everything in one place will take the hassle out of planning your trip. Just secure your flights and select from our wide range of hotels, then tailor your trip with extras like tours, activities and car rentals.
Can I cancel or change the date of my flight from Lambert-St. Louis Intl. Airport (STL) to Ponciano Arriaga Intl. Airport (SLP)?
If you reserved your STL to SLP flight within the last 24 hours, you may be able to cancel or modify it without fees. Depending on the airline and the type of ticket you have, additional charges may apply for changes beyond this timeframe. Airline policies and contact information can be found in your itinerary or confirmation email. Or, go to our Customer Service portal for more details.

Travel information

Origin airport
Lambert-St. Louis Intl.
Destination airport
Ponciano Arriaga Intl.
Airlines serving
Aeromexico, American Airlines, Delta, United
Roundtrip price
$502
Distance
1299 mi

Book with confidence

St. Louis to San Luis Potosi Flights

The cheapest times to fly from St. Louis to San Luis Potosi

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

 

The best time to book a flight from St. Louis to San Luis Potosi

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

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 San Luis Potosi in 2025. You can also book with separate airlines for your outbound and return journeys, from $262 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 San Luis Potosi 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 San Luis Potosi 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 San Luis Potosi Flights

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*Available to One Key members.