$173 Cheap Flights from Cancun (CUN) to St. Louis (STL)

View $173 flight on Tue, Feb 24, 2026Opens in a new window

Popular airlines from Cancun Intl. Airport (CUN) to St. Louis Lambert Intl. Airport (STL)

Cheap Flights from Cancun to St. Louis (CUN-STL)

Prices were available within the past 7 days and start at $173 for one-way flights and $213 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Frontier Airlines
Thu, Nov 13 - Sun, Nov 16
CUN
Cancun
STL
St. Louis
$213 Roundtrip, found 3 days ago
$213
Roundtrip
found 3 days ago
Select Frontier Airlines flight, departing Thu, Nov 13 from Cancun to St. Louis, returning Sun, Nov 16, priced at $213 found 3 days ago
Frontier Airlines
Thu, Nov 13 - Mon, Nov 17
CUN
Cancun
STL
St. Louis
$231 Roundtrip, found 4 days ago
$231
Roundtrip
found 4 days ago
Select Frontier Airlines flight, departing Thu, Nov 13 from Cancun to St. Louis, returning Mon, Nov 17, priced at $231 found 4 days ago
Frontier Airlines
Thu, Jan 29 - Mon, Feb 2
CUN
Cancun
STL
St. Louis
$262 Roundtrip, found 3 days ago
$262
Roundtrip
found 3 days ago
Select Frontier Airlines flight, departing Thu, Jan 29 from Cancun to St. Louis, returning Mon, Feb 2, priced at $262 found 3 days ago
Frontier Airlines
Thu, Nov 6 - Mon, Nov 10
CUN
Cancun
STL
St. Louis
$264 Roundtrip, found 4 days ago
$264
Roundtrip
found 4 days ago
Select Frontier Airlines flight, departing Thu, Nov 6 from Cancun to St. Louis, returning Mon, Nov 10, priced at $264 found 4 days ago
Aeromexico
Thu, Jan 29 - Mon, Feb 2
CUN
Cancun
STL
St. Louis
$269 Roundtrip, found 3 days ago
$269
Roundtrip
found 3 days ago
Select Aeromexico flight, departing Thu, Jan 29 from Cancun to St. Louis, returning Mon, Feb 2, priced at $269 found 3 days ago
Frontier Airlines
Thu, Nov 13 - Mon, Nov 17
CUN
Cancun
STL
St. Louis
$272 Roundtrip, found 4 days ago
$272
Roundtrip
found 4 days ago
Select Frontier Airlines flight, departing Thu, Nov 13 from Cancun to St. Louis, returning Mon, Nov 17, priced at $272 found 4 days ago
Frontier Airlines
Wed, Jan 14 - Mon, Jan 19
CUN
Cancun
STL
St. Louis
$283 Roundtrip, found 4 days ago
$283
Roundtrip
found 4 days ago
Select Frontier Airlines flight, departing Wed, Jan 14 from Cancun to St. Louis, returning Mon, Jan 19, priced at $283 found 4 days ago
Air Canada
Tue, Nov 4 - Tue, Nov 11
CUN
Cancun
STL
St. Louis
$299 Roundtrip, found 4 days ago
$299
Roundtrip
found 4 days ago
Select Air Canada flight, departing Tue, Nov 4 from Cancun to St. Louis, returning Tue, Nov 11, priced at $299 found 4 days ago
Delta
Thu, Feb 12 - Mon, Feb 16
CUN
Cancun
STL
St. Louis
$314 Roundtrip, found 20 hours ago
$314
Roundtrip
found 20 hours ago
Select Delta flight, departing Thu, Feb 12 from Cancun to St. Louis, returning Mon, Feb 16, priced at $314 found 20 hours ago
American Airlines
Thu, Feb 12 - Mon, Feb 16
CUN
Cancun
STL
St. Louis
$321 Roundtrip, found 20 hours ago
$321
Roundtrip
found 20 hours ago
Select American Airlines flight, departing Thu, Feb 12 from Cancun to St. Louis, returning Mon, Feb 16, priced at $321 found 20 hours ago

Find the cheapest month to fly from Cancun (CUN) to St. Louis (STL)

September is typically the cheapest month to fly

From $253 - $560 per traveler.

Frequently asked questions

How much does a flight from Cancun Intl. Airport (CUN) to Lambert-St. Louis Intl. Airport (STL) cost?
Snag a cheap one-way flight from $173 or cheap return flight from $213 from Cancun Intl. Airport (CUN) 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 offers on this route.
What is the cheapest month to fly from Cancun Intl. Airport (CUN) to Lambert-St. Louis Intl. Airport (STL)?
November is the cheapest month to fly from CUN to STL. Traveling outside of peak seasons is often the key to finding better fares.
Which airlines fly direct from Cancun Intl. Airport (CUN) to Lambert-St. Louis Intl. Airport (STL)?
You can choose from 3 carriers that fly nonstop from Cancun Intl. Airport (CUN) to Lambert-St. Louis Intl. Airport (STL). These include:

  • Southwest Airlines
  • Frontier Airlines
  • American Airlines

What is the cheapest airline that flies from Cancun Intl. Airport (CUN) to Lambert-St. Louis Intl. Airport (STL)?
American Airlines and Southwest Airlines are some popular carriers offering reasonable fares. Don't forget that flight prices from Cancun Intl. Airport (CUN) to Lambert-St. Louis Intl. Airport (STL) can change based on demand, seasonality and time of booking. With Expedia's filter tool, you can easily find a CUN to STL flight that suits your plans and budget.
How many flights per day from Cancun Intl. Airport (CUN) to Lambert-St. Louis Intl. Airport (STL)?
With, on average, 2 nonstop flights that operate from Cancun Intl. Airport (CUN) to Lambert-St. Louis Intl. Airport (STL) each day, you'll be soaring through the skies in no time.
What are the most popular departure times for flights from Cancun Intl. Airport (CUN) to Lambert-St. Louis Intl. Airport (STL)?
More people fly between CUN and STL at 12 PM than at any other time. Looking to skip the crowds? Travel outside of rush hours and you could save on your ticket as well.
What day of the week has the most flights from CUN to STL?
Depart on a Saturday if you're looking for the best choice of flights from Cancun Intl. Airport (CUN) to Lambert-St. Louis Intl. Airport (STL).
What is the earliest flight from Cancun Intl. Airport (CUN) to Lambert-St. Louis Intl. Airport (STL)?
The earliest flight departing from Cancun Intl. Airport (CUN) is at around 12:21PM UTC-5. Catch this flight and you'll land at Lambert-St. Louis Intl. Airport (STL) at approximately 2:44PM UTC-6. The total travel time is 3h 23m.
How long does it take to fly from Cancun Intl. Airport (CUN) to Lambert-St. Louis Intl. Airport (STL)?
Flights from CUN to STL have an average travel time of 3 hours and 22 minutes. The total distance between these two airports is 1,250 mi.
What airline has the least delays from CUN to STL?
Frontier Airlines has the best track record for on-time direct flights from Cancun Intl. Airport (CUN) to Lambert-St. Louis Intl. Airport (STL), with an on-time rating of 91%. Use the Expedia App to check your flight schedule before you leave and get real-time updates about any trip changes.
What is the best time to fly from Cancun Intl. Airport (CUN) to Lambert-St. Louis Intl. Airport (STL)?
To avoid potential delays on the Cancun Intl. Airport (CUN) to Lambert-St. Louis Intl. Airport (STL) route, aim to fly before 3 PM. Later departures have a 22% higher chance of being 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.
What airports do you fly into for St. Louis from Cancun Intl. Airport (CUN)?
Compare your flight options from Cancun Intl. Airport (CUN) to Lambert-St. Louis Intl. Airport (STL). This is the only St. Louis airport you can touch down at if you're taking a direct flight.
Is it cheaper to buy a plane ticket from Cancun Intl. Airport (CUN) to Lambert-St. Louis Intl. Airport (STL) last-minute?
Last-minute fares from CUN to STL are usually more expensive. To lock in the lowest prices, start searching for flights as soon as possible. That being said, if you're flexible with your travel dates, it's possible to land a cheap ticket right before your journey.
Is it cheaper to book a CUN to STL flight and hotel package?
Booking a CUN to STL flight and hotel package tends to be cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your travels in one place. Choose from our impressive range of accommodations and then add activities, car rentals and flights to your booking. Bundle everything together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Cancun Intl. Airport (CUN) to Lambert-St. Louis Intl. Airport (STL)?
Typically, you're able to reschedule or cancel your CUN to STL flight. However, there may be additional charges, especially if you made your booking over 24 hours ago. Check your itinerary for the airline's fees and rules on flight changes, or if you'd like more information, visit our Customer Service portal.

Travel information

Origin airport
Cancun Intl.
Destination airport
Lambert-St. Louis Intl.
Airlines serving
Aeromexico, Air Canada, Alaska Airlines, American Airlines, Delta, Frontier Airlines, Southwest Airlines, United
Roundtrip price
$213
Distance
1240 mi
Average flight time
3 hours 9 mins

Book with confidence

Cancun to St. Louis Flights

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

 

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

Sunday is one of the best days to book for cheap flights from Cancun 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 Cancun 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 Cancun to St. Louis in 2025. You can also book with separate airlines for your outbound and return journeys, from $173 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 Cancun 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 Cancun 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.

 

Cancun to St. Louis Flights

Explore a world of travel with Expedia

*Available to One Key members.