$504 Cheap Flights from St. Louis (STL) to Tapachula (TAP)

View $504 flight on Wed, Nov 19, 2025Opens in a new window

Popular airlines from St. Louis Lambert Intl. Airport (STL) to Tapachula, Chiapas (TAP-Tapachula Intl.)

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Cheap Flights from St. Louis to Tapachula (STL-TAP)

Prices were available within the past 7 days and start at $504 for one-way flights and $1,043 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Aeromexico
Sun, Nov 16 - Thu, Nov 20
STL
St. Louis
TAP
Tapachula
$1,043 Roundtrip, found 6 days ago
$1,043
Roundtrip
found 6 days ago
Select Aeromexico flight, departing Sun, Nov 16 from St. Louis to Tapachula, returning Thu, Nov 20, priced at $1,043 found 6 days ago

Frequently asked questions

How much does a flight from Lambert-St. Louis Intl. Airport (STL) to Tapachula Intl. Airport (TAP) cost?
Secure a cheap one-way flight from $504 or cheap return flight from $1,043 from Lambert-St. Louis Intl. Airport (STL) to Tapachula Intl. Airport (TAP) 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 Lambert-St. Louis Intl. Airport (STL) to Tapachula Intl. Airport (TAP)?
November is the cheapest month to fly from STL to TAP. Traveling during quieter months is often the key to landing a great deal.
What is the cheapest airline that flies from Lambert-St. Louis Intl. Airport (STL) to Tapachula Intl. Airport (TAP)?
Use the filter tool on Expedia to compare different airlines and find the cheapest carrier that'll fly you from STL to TAP. Then, sort your results by "Price (lowest to highest)" to pick up a great deal.
How many flights per day from Lambert-St. Louis Intl. Airport (STL) to Tapachula Intl. Airport (TAP)?
There are no daily direct flights departing from Lambert-St. Louis Intl. Airport (STL) to Tapachula Intl. Airport (TAP). But you can choose flights with layovers. Filter your search on Expedia to include one or two stops, and you'll be soaring above the clouds in no time at all.
What day of the week has the most flights from STL to TAP?
Generally you'll have the most choice when it comes to flights on a Friday. Tuesdays tend to be the quietest.* However, this can change based on the airline, season 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 Tapachula Intl. Airport (TAP)?
To avoid potential delays on the Lambert-St. Louis Intl. Airport (STL) to Tapachula Intl. Airport (TAP) route, travel before 3 PM. Flights after this time 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 Lambert-St. Louis Intl. Airport (STL) to Tapachula Intl. Airport (TAP) last-minute?
Booking your flight from STL to TAP just before your getaway is usually more expensive. However, if you're flexible with your travel dates and times, you could land a cheap last-minute fare.
Is it cheaper to book a STL to TAP flight and hotel package?
Securing a STL to TAP flight and hotel package is usually cheaper than booking separately. With Expedia, you can enjoy the convenience of organizing your trip all in one place. Select from our wide range of stays and then add flights, car rentals and activities to your booking. Bundle it all together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Lambert-St. Louis Intl. Airport (STL) to Tapachula Intl. Airport (TAP)?
Usually, it's possible to cancel or reschedule your STL to TAP flight. However, if the booking was made more than 24 hours ago, additional charges may apply. Check your airline's policies in your itinerary to see what changes are allowed and whether any costs are involved. You'll also find more details on our Customer Service portal.

Travel information

Origin airport
Lambert-St. Louis Intl.
Destination airport
Tapachula Intl.
Roundtrip price
$1,042
Distance
1659 mi

Book with confidence

St. Louis to Tapachula Flights

The cheapest times to fly from St. Louis to Tapachula

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

 

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

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

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 Tapachula in 2025. You can also book with separate airlines for your outbound and return journeys, from $504 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 Tapachula 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 Tapachula 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 Tapachula Flights

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*Available to One Key members.