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CA $331 Cheap Flights from Cancun (CUN) to St. Louis (STL)

View CA $331 flight on Mon, Oct 26, 2026Opens in a new window

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

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Cheap flights from Cancun (CUN) to St. Louis (STL)

Prices were available within the past 7 days and start at CA $331 for one-way flights and CA $660 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Air Canada
Wed, Oct 14 - Sun, Oct 18
CUN
Cancun
STL
St. Louis
CA $660 Roundtrip, found 2 days ago
CA $660
Roundtrip
found 2 days ago
Select Air Canada flight, departing Wed, Oct 14 from Cancun to St. Louis, returning Sun, Oct 18, priced at CA $660 found 2 days ago
Air Canada
Wed, Oct 14 - Sun, Oct 18
CUN
Cancun
STL
St. Louis
CA $667 Roundtrip, found 2 days ago
CA $667
Roundtrip
found 2 days ago
Select Air Canada flight, departing Wed, Oct 14 from Cancun to St. Louis, returning Sun, Oct 18, priced at CA $667 found 2 days ago
Aeromexico
Wed, Oct 14 - Sun, Oct 18
CUN
Cancun
STL
St. Louis
CA $668 Roundtrip, found 2 days ago
CA $668
Roundtrip
found 2 days ago
Select Aeromexico flight, departing Wed, Oct 14 from Cancun to St. Louis, returning Sun, Oct 18, priced at CA $668 found 2 days ago
Delta
Thu, Nov 5 - Tue, Nov 10
CUN
Cancun
STL
St. Louis
CA $670 Roundtrip, found 2 days ago
CA $670
Roundtrip
found 2 days ago
Select Delta flight, departing Thu, Nov 5 from Cancun to St. Louis, returning Tue, Nov 10, priced at CA $670 found 2 days ago
American Airlines
Fri, Nov 6 - Tue, Nov 10
CUN
Cancun
STL
St. Louis
CA $671 Roundtrip, found 4 days ago
CA $671
Roundtrip
found 4 days ago
Select American Airlines flight, departing Fri, Nov 6 from Cancun to St. Louis, returning Tue, Nov 10, priced at CA $671 found 4 days ago
Delta
Tue, Nov 10 - Wed, Nov 11
CUN
Cancun
STL
St. Louis
CA $708 Roundtrip, found 2 days ago
CA $708
Roundtrip
found 2 days ago
Select Delta flight, departing Tue, Nov 10 from Cancun to St. Louis, returning Wed, Nov 11, priced at CA $708 found 2 days ago
American Airlines
Fri, Nov 6 - Tue, Nov 10
CUN
Cancun
STL
St. Louis
CA $717 Roundtrip, found 4 days ago
CA $717
Roundtrip
found 4 days ago
Select American Airlines flight, departing Fri, Nov 6 from Cancun to St. Louis, returning Tue, Nov 10, priced at CA $717 found 4 days ago
Delta
Thu, Nov 5 - Thu, Nov 12
CUN
Cancun
STL
St. Louis
CA $735 Roundtrip, found 2 days ago
CA $735
Roundtrip
found 2 days ago
Select Delta flight, departing Thu, Nov 5 from Cancun to St. Louis, returning Thu, Nov 12, priced at CA $735 found 2 days ago
American Airlines
Mon, Apr 12 - Mon, May 17
CUN
Cancun
STL
St. Louis
CA $735 Roundtrip, found 2 days ago
CA $735
Roundtrip
found 2 days ago
Select American Airlines flight, departing Mon, Apr 12 from Cancun to St. Louis, returning Mon, May 17, priced at CA $735 found 2 days ago
United
Fri, Nov 6 - Tue, Nov 10
CUN
Cancun
STL
St. Louis
CA $843 Roundtrip, found 4 days ago
CA $843
Roundtrip
found 4 days ago
Select United flight, departing Fri, Nov 6 from Cancun to St. Louis, returning Tue, Nov 10, priced at CA $843 found 4 days ago

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

April is typically the cheapest month to fly

From CA $295 - CA $670 per traveller.

Frequently asked questions

How much does a flight from Cancun, Quintana Roo (CUN-Cancun Intl.) to St. Louis, MO (STL-Lambert-St. Louis Intl.) cost?
You can find one-way and return flights from CUN to STL with Expedia. Flight prices vary based on the month and day of the week you want to travel, as well as the airline and how far in advance you book your ticket. Filter your search on Expedia by "Price (lowest to highest)" to see our cheapest fares first, and use the Price Tracking tool to receive alerts when CUN to STL ticket fares go up or down.
What is the cheapest month to fly from Cancun, Quintana Roo (CUN-Cancun Intl.) to St. Louis, MO (STL-Lambert-St. Louis Intl.)?
The cheapest months to fly from CUN to STL are typically during off-peak season when demand is low. Traveling in off-peak or shoulder months is usually a good way to secure cheap tickets, just remember to avoid flying during holidays if you are able to. Use the calendar view in your search to see which months have low fares on this route.
Which airlines fly direct from Cancun, Quintana Roo (CUN-Cancun Intl.) to St. Louis, MO (STL-Lambert-St. Louis Intl.)?
There are 2 airlines offering direct flights from Cancun, Quintana Roo (CUN-Cancun Intl.) to St. Louis, MO (STL-Lambert-St. Louis Intl.).
  • Southwest Airlines operates 11 direct flights from CUN to STL every week.
  • Frontier Airlines operates 7 direct flights from CUN to STL every week.
What is the cheapest airline that flies from Cancun, Quintana Roo (CUN-Cancun Intl.) to St. Louis, MO (STL-Lambert-St. Louis Intl.)?
Delta is one of the cheapest airlines offering connecting return flights from Cancun, Quintana Roo (CUN-Cancun Intl.) to St. Louis, MO (STL-Lambert-St. Louis Intl.), with tickets starting from around CA$412 for flights that can be booked for departure within the next year. These prices are per adult for economy/coach class. Use Expedia's search tool to compare the prices and schedules of airlines that fly this route to find the best option for your plans and budget.
How do I find cheap flights from Cancun, Quintana Roo (CUN-Cancun Intl.) to St. Louis, MO (STL-Lambert-St. Louis Intl.)?
To find a cheap flight from Cancun, Quintana Roo (CUN-Cancun Intl.) to St. Louis, MO (STL-Lambert-St. Louis Intl.), be flexible with your dates. Traveling outside of peak vacation months and booking a mid-week flight can help you save. Early morning and late night flights are often more affordable, too. Expedia allows you to compare flight times, airlines and routes all in one place to find low fares. You can also set up Price Tracking and receive alerts when fares go up or down.
What is the best airline to fly with from Cancun, Quintana Roo (CUN-Cancun Intl.) to St. Louis, MO (STL-Lambert-St. Louis Intl.)?
The best airline to fly with from Cancun, Quintana Roo (CUN-Cancun Intl.) to St. Louis, MO (STL-Lambert-St. Louis Intl.) will differ from traveler to traveler. If you like to fly early, Southwest Airlines offers early morning flights. If price is the most important factor, Frontier Airlines typically offers the lowest fares. Southwest Airlines offers the most daily flights from Cancun, Quintana Roo (CUN-Cancun Intl.) to St. Louis, MO (STL-Lambert-St. Louis Intl.), which is great if flexibility is what you value most. The best carrier for this journey could also be the one you have a loyalty membership with, as flying with that airline or another airline within the same alliance could help you collect points or enjoy lounge access.
What is the best time to fly from Cancun, Quintana Roo (CUN-Cancun Intl.) to St. Louis, MO (STL-Lambert-St. Louis Intl.)?
The best time to fly is usually mid-week (Tuesday or Wednesday) and during early morning hours as flights tend to be cheaper, less crowded, and generally more on-time. Avoid major holidays and peak vacation seasons for smoother travel. Combining off-peak days and hours often gives the best combination of cost, comfort, and convenience.
How many flights per day from Cancun, Quintana Roo (CUN-Cancun Intl.) to St. Louis, MO (STL-Lambert-St. Louis Intl.)?
You'll find approximately 2 nonstop flights per day from Cancun, Quintana Roo (CUN-Cancun Intl.) to St. Louis, MO (STL-Lambert-St. Louis Intl.). For even more choices, look at flights that include layovers, as there are around 74 connecting flights per day. Some common connection points include Mexico City Intl. (MEX), William P. Hobby (HOU), and Dallas-Fort Worth Intl. (DFW).
What is the earliest flight from Cancun, Quintana Roo (CUN-Cancun Intl.) to St. Louis, MO (STL-Lambert-St. Louis Intl.)?
The earliest flight from Cancun Intl. (CUN) to Lambert-St. Louis Intl. (STL) typically departs around 5:30 AM local time, operated by United. This is a seasonal service active in March. An early departure like this can help you make the most of your time at your destination. To compare early flights on Expedia, select the "Early Morning" and "Morning" filters in your search.
What day of the week has the most flights from Cancun, Quintana Roo (CUN-Cancun Intl.) to St. Louis, MO (STL-Lambert-St. Louis Intl.)?
You'll find the most flights from Cancun International Airport (CUN) to Lambert-St. Louis International Airport (STL) on a Saturday, with around 54 flights available. This gives you plenty of options for your travel plans. Major airlines on this route include Delta, American Airlines, and United. Saturday offers notably more flight options compared to other days of the week, making it a great day to consider for your trip.
What are the most popular departure times for flights from Cancun, Quintana Roo (CUN-Cancun Intl.) to St. Louis, MO (STL-Lambert-St. Louis Intl.)?
The most popular departure times for flights from Cancun, Quintana Roo (CUN-Cancun Intl.) to St. Louis, MO (STL-Lambert-St. Louis Intl.) are in the afternoon, from 12pm to 3pm. Many major carriers, including Delta, American Airlines and United, offer flights during this window. Many travelers prefer this because it allows for a relaxed morning before heading to the airport, and you'll arrive in St. Louis with plenty of time to settle in.
How long does it take to fly from Cancun, Quintana Roo (CUN-Cancun Intl.) to St. Louis, MO (STL-Lambert-St. Louis Intl.)?
A nonstop flight from Cancun, Quintana Roo (CUN-Cancun Intl.) to St. Louis, MO (STL-Lambert-St. Louis Intl.) typically takes around 3 hours 18 minutes. This route covers a distance of approximately 2,000 kilometres (1,241 miles). If you opt for a flight with one stop, your travel time will be longer, usually around 8 hours 18 minutes. Flights with two or more stops can take even longer, often around 17 hours 30 minutes. Keep in mind that actual flight times can vary due to factors like wind patterns and air traffic, so it's always a good idea to allow for some extra time when planning your trip.
Can you fly business or first class from Cancun, Quintana Roo (CUN-Cancun Intl.) to St. Louis, MO (STL-Lambert-St. Louis Intl.)?
Yes, you can fly business class or first class between CUN and STL. Airlines that offer business class service on this route include:
  • Frontier Airlines
  • Air Canada
  • Delta
  • American Airlines
First class cabins are available on Alaska Airlines.
How do I earn miles on a Cancun, Quintana Roo (CUN-Cancun Intl.) to St. Louis, MO (STL-Lambert-St. Louis Intl.) flight with Expedia?
It's easy to earn miles on a Cancun, Quintana Roo (CUN-Cancun Intl.) to St. Louis, MO (STL-Lambert-St. Louis Intl.) flight when you book with Expedia. Before you confirm your booking, simply select your frequent flyer program and enter your program number. As a member of One Key™, you can also earn OneKeyCash™* on top of your airline miles when you book with Expedia.*Excludes taxes and fees. OneKeyCash is not redeemable for cash and can only be used on Expedia and other participating brands.
What airports do you fly into for St. Louis, MO (STL) from Cancun, Quintana Roo (CUN)?
If you're planning to travel to St. Louis from Cancun Intl. (CUN), you can fly directly into Lambert-St. Louis Intl. (STL). Some flights may connect through major hubs like Los Angeles Intl. (LAX), William P. Hobby (HOU), or George Bush Intercontinental (IAH) before reaching St. Louis. Compare routes and airports on Expedia to find the best flight options for your travel plans.
Is it cheaper to buy a plane ticket from Cancun, Quintana Roo (CUN-Cancun Intl.) to St. Louis, MO (STL-Lambert-St. Louis Intl.) at the last minute?
Typically, booking a last minute flight from Cancun, Quintana Roo (CUN-Cancun Intl.) to St. Louis, MO (STL-Lambert-St. Louis Intl.) will be more expensive than booking in advance. As the departure date approaches, there are usually fewer seats available which can drive up the cost. However, if there's some wiggle room with your travel dates and times, you could bag a cheap last-minute fare.
Is it cheaper to book a Cancun, Quintana Roo (CUN-Cancun Intl.) to St. Louis, MO (STL-Lambert-St. Louis Intl.) flight and hotel package?
Securing a Cancun, Quintana Roo (CUN-Cancun Intl.) to St. Louis, MO (STL-Lambert-St. Louis Intl.) flight and hotel package is usually cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your travels all in one place. Select from our extensive range of stays and then add flights, activities and car rentals 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, Quintana Roo (CUN-Cancun Intl.) to St. Louis, MO (STL-Lambert-St. Louis Intl.)?
If you booked your Cancun, Quintana Roo (CUN-Cancun Intl.) to St. Louis, MO (STL-Lambert-St. Louis Intl.) flight within the last 24 hours, you may be able to modify or cancel it without any 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, head to our Customer Service portal if you'd like more information.

Travel information

Origin airport
Cancun Intl.
Destination airport
Lambert-St. Louis Intl.
Roundtrip price
CA $659
Distance
1984 km
Average flight time
4 hours 5 mins

Book with confidence

Cancun to St. Louis Flights

The easy way to book your flights from Cancun to St. Louis 

With Expedia, it’s simple to find and book flights to St. Louis from Cancun whether you’re traveling for business or pleasure. Enter your travel dates, hit search, and choose your flight from 20 airlines that cover this route. There are nonstop flights to Lambert-St. Louis Intl., too.  

Choose your preferred carrier and cabin class with the advanced search tool and select your ideal departure time. Then, if you want, you can see just nonstop or refundable flights. And if you’re traveling last minute, just enter the date to check out flights from Cancun to St. Louis today, tomorrow, or this week.  

 

Save dollars with cheap flights from Cancun Intl., CUN to Lambert-St. Louis Intl., STL 

Sort your search results by price to find great deals on your flight from Cancun to St. Louis—you get all your cheapest options first. Grab yourself a bargain now—the lowest price on flights to St. Louis from Cancun currently is just CA $660 rising to CA $843.  

Here are more money-saving tips: 

  • Fly in October when flight prices are normally at their lowest 
  • Book about a month to 6 weeks before you travel for the best prices to St. Louis  
  • Avoid peak season and weekends when flights can cost more
  • Early morning and late-night flights are sometimes cheaper, so try varying your travel times 
  • One surefire way to save money on your flight is to book your flight and hotel together with Expedia. Sometimes, the savings are so large that the flight is basically free! 

 

Reasons to choose Expedia for your flight to St. Louis from Cancun 

Whatever your destination, budget, or reason to travel, in just one quick search, you can choose from loads of flights, airlines, and cabin classes. The filters make it quick and easy to find your ideal flights, and if you choose one of the flexible options, you won’t be charged to change your flight. So book your flight to St. Louis with Expedia today.

Cancun to St. Louis Flights

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