₩255,200 Cheap Flights from St. Louis (STL) to Cancun (CUN)

View ₩255,200 flight on Sun, Nov 2, 2025Opens in a new window

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

  • Plan, book, fly with confidence

  • trending down icon

    Be in the know

    Get alerts if flight prices drop or rise*
  • bex rewards loyalty icon

    Book smarter

    Save up to 40% on select hotels after you book a flight*
  • payments icon

    Earn twice

    Earn your airline miles on top of our rewards
    Sign in

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

Prices were available within the past 7 days and start at ₩255,200 for one-way flights and ₩550,400 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Sun, Nov 2 - Wed, Nov 5
STL
St. Louis
CUN
Cancun
₩550,400 Roundtrip, found 2 days ago
₩550,400
Roundtrip
found 2 days ago
Select Delta flight, departing Sun, Nov 2 from St. Louis to Cancun, returning Wed, Nov 5, priced at ₩550,400 found 2 days ago
Delta
Sun, Nov 2 - Wed, Nov 5
STL
St. Louis
CUN
Cancun
₩571,100 Roundtrip, found 2 days ago
₩571,100
Roundtrip
found 2 days ago
Select Delta flight, departing Sun, Nov 2 from St. Louis to Cancun, returning Wed, Nov 5, priced at ₩571,100 found 2 days ago
Aeromexico
Sun, Nov 2 - Wed, Nov 5
STL
St. Louis
CUN
Cancun
₩579,700 Roundtrip, found 2 days ago
₩579,700
Roundtrip
found 2 days ago
Select Aeromexico flight, departing Sun, Nov 2 from St. Louis to Cancun, returning Wed, Nov 5, priced at ₩579,700 found 2 days ago
Delta
Sat, Nov 1 - Wed, Nov 5
STL
St. Louis
CUN
Cancun
₩605,900 Roundtrip, found 2 days ago
₩605,900
Roundtrip
found 2 days ago
Select Delta flight, departing Sat, Nov 1 from St. Louis to Cancun, returning Wed, Nov 5, priced at ₩605,900 found 2 days ago
Delta
Sun, Nov 2 - Wed, Nov 5
STL
St. Louis
CUN
Cancun
₩612,900 Roundtrip, found 2 days ago
₩612,900
Roundtrip
found 2 days ago
Select Delta flight, departing Sun, Nov 2 from St. Louis to Cancun, returning Wed, Nov 5, priced at ₩612,900 found 2 days ago
American Airlines
Sat, Nov 1 - Tue, Nov 4
STL
St. Louis
CUN
Cancun
₩618,300 Roundtrip, found 2 days ago
₩618,300
Roundtrip
found 2 days ago
Select American Airlines flight, departing Sat, Nov 1 from St. Louis to Cancun, returning Tue, Nov 4, priced at ₩618,300 found 2 days ago
American Airlines
Sun, Nov 2 - Wed, Nov 5
STL
St. Louis
CUN
Cancun
₩625,400 Roundtrip, found 2 days ago
₩625,400
Roundtrip
found 2 days ago
Select American Airlines flight, departing Sun, Nov 2 from St. Louis to Cancun, returning Wed, Nov 5, priced at ₩625,400 found 2 days ago
Delta
Sat, Nov 1 - Wed, Nov 5
STL
St. Louis
CUN
Cancun
₩626,600 Roundtrip, found 2 days ago
₩626,600
Roundtrip
found 2 days ago
Select Delta flight, departing Sat, Nov 1 from St. Louis to Cancun, returning Wed, Nov 5, priced at ₩626,600 found 2 days ago
United
Sat, Nov 1 - Tue, Nov 4
STL
St. Louis
CUN
Cancun
₩643,900 Roundtrip, found 2 days ago
₩643,900
Roundtrip
found 2 days ago
Select United flight, departing Sat, Nov 1 from St. Louis to Cancun, returning Tue, Nov 4, priced at ₩643,900 found 2 days ago
Air Canada
Sat, Nov 1 - Tue, Nov 4
STL
St. Louis
CUN
Cancun
₩685,200 Roundtrip, found 2 days ago
₩685,200
Roundtrip
found 2 days ago
Select Air Canada flight, departing Sat, Nov 1 from St. Louis to Cancun, returning Tue, Nov 4, priced at ₩685,200 found 2 days ago

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

September is typically the cheapest month to fly

From ₩302,783 - ₩614,613 per traveler.

Graph displaying average flight prices per month

Flights from St. Louis (STL) to Cancun (CUN)
Origin airport
Lambert-St. Louis Intl.
Destination airport
Cancun Intl.
Roundtrip price
₩550,400
Distance
1984 km

St. Louis to Cancun Flights

Sometimes you just need to get out of town or maybe you’re looking for a change of scenery. Regardless of the reason, a flight from St. Louis to Cancun will do just the trick! Go on, plan to see all the famous landmarks and eat your weight in the local cuisine. Your trip is beckoning, so answer the call by packing your suitcase and filling your travel itinerary with exploring Cancun.

Whether you’re flying for business or jet-setting on your personal time, you’ve come to the right place. Here at Expedia.com, we’ll pair you up with STL to CUN flights that won’t make your bank account wince. Ready to temporarily leave behind St. Louis for new horizons? Browse through our cheap airfare, and filter by flight times and dates until you find just what you had in mind. From flights without layovers to ones that arrive early in the morning, you’ll come across plane tickets that suit your travel preferences. You can even bundle your flight to CUN with hotels and car rentals to score even bigger savings.

All set to hit the clouds? Book your travel arrangements with us today and have left-over money to put toward your travel outings and adventures.

Frequently asked questions

How much is a flight from STL to Cancun Intl. Airport (CUN)?
Based on airfares available within the last 7 days on Expedia for flights departing within the next year, round-trip flights between Lambert-St. Louis Intl. Airport (STL) and Cancun Intl. Airport (CUN) start from ₩550,400. Make your booking today to secure the best price for your adventure. Prices and availability are subject to change. Additional terms apply.
Do I need to pay a cancellation fee if I cancel my flight from St. Louis Lambert International Airport to CUN?
Each airline has its own set of terms and conditions. If you decide to cancel your escape, visit our Customer Service Portal.
How do I find cheap flights from STL to CUN that have flexible change policies?
Many airlines offer the option to reschedule your flight without a change fee. All you pay is the difference between the original flight and the new flight. When you're searching for Lambert Field to Cancun Airport flights, you'll see a "no change fees" filter for you to select.
How far is the flight from Lambert Field to Cancun Airport?
The flight distance between Lambert-St. Louis Intl. Airport (STL) and CUN is 2,000 kilometers. Bring along a drink, a few snacks and a few good podcasts. Keep yourself occupied and the hours will zip by.
Which airlines fly direct from STL to Cancun Airport?
With 30 flights every month from Lambert-St. Louis Intl. Airport (STL) to Cancun Airport, Southwest Airlines (WN) is a terrific choice. Offering 30 flights a month on this route, Frontier Airlines (F9) is another top pick.
Are Lambert-St. Louis Intl. Airport (STL) to Cancun Intl. Airport (CUN) flight tickets cheaper when they're purchased at the last minute?
Last-minute bookings from Lambert Field to Cancun Intl. Airport (CUN) can be hit-or-miss. You may be able to find a bargain, but you could also miss out completely! If you'd prefer to play it safe and start planning your trip early on, Expedia compares flight deals up to 12 months in advance. Just keep in mind that not all airlines publish their prices so far in advance. Our advice? Check back often as updates are made regularly.

Explore a world of travel with Expedia

*Available to Expedia members.