$226 Cheap Aeromexico flights St. Louis (STL) to Cozumel (CZM)

Landing cheap one-way Aeromexico flights from STL to CZM from $226 on Expedia is a breeze — just filter by “Price (lowest to highest).” Alternatively, check out our budget-friendly return fares from $554 for your next break.**These prices were available on Expedia within the past 7 days, for flights departing within the next year. Prices and availability are subject to change. Additional terms apply.

September is one of the cheapest months to fly to Cozumel with Aeromexico. You could also find great deals on one-way and round-trip fares in October.

Landing the best Aeromexico deals from STL to CZM often comes down to booking at the right time. You can save 17% on international flights when you book 18 to 29 days before takeoff instead of four to five months ahead. To top it off, you can pocket 17% on average by buying your fare on a Sunday rather than a Friday, which is often the most expensive day to book.* It’s a good idea to start checking out flights about one month before you want to travel.*Ideal booking window recommendation is based on average round-trip ticket prices for January through November for 2024. Best day of the week to book recommendation is based on average round-trip ticket prices for January through October 2024. All data sourced from ARC’s global airline sales database.

Fill in your dates, click search and check the “Nonstop” filter on Expedia to browse any direct flights from STL to CZM with Aeromexico or another airline.

Search Aeromexico’s earliest flights from STL to CZM by selecting our “Morning” and “Early Morning” filters. Not only will you get to your destination sooner, early departures also have a 20% less chance of being canceled.**Most reliable time of the day recommendation is based on January through August 2024 flight status data sourced from OAG’s global flight data platform.

Cozumel Intl. Airport (CZM) is the primary Cozumel hub for Aeromexico flights from Lambert-St. Louis Intl. Airport (STL).

For checked luggage, you can bring 1 checked-in bag weighing up to 50 lb with dimensions not exceeding 62 inches. You can also travel with 1 cabin bag in the cabin when flying standard economy from STL to CZM with Aeromexico. This carry-on must weigh less than 22 lb and be no larger than 21 inches x 15 inches x 9 inches. Going above these restrictions can mean extra charges, so read Aeromexico’s baggage allowance guidelines before you start packing.

Fly from STL to CZM with Aeromexico and enjoy a range of perks starting with a rewarding loyalty program. When booking through Expedia as an Aeromexico Club Premier and One Key™ member, you can also earn OneKeyCash™* to use on select future travel purchases.*OneKeyCash™ disclaimer - OneKeyCash™ is not redeemable for cash and can only be used on Expedia, Hotels.com and Vrbo.

In most cases, you can reschedule or cancel your flight, although there may be a charge if you made your booking more than 24 hours ago. Need flexible options? Make use of our “No cancel fee” and “Changes included” filters to find flights that won’t penalize you if you have to adjust your plans. To make modifications, head to “Trips,” select your flight and click on “Manage Booking” for further information.