St. Louis to Cancun (STL-CUN): nonstop upgrade & award space

Frontier Airlines and American Airlines fly the STL to CUN nonstop about 7 times a week. Frontier Airlines sets the rhythm here, a few flights a day with a small premium cabin on each, so a date with open space is worth acting on the day you see it. 2LNR tracks confirmed upgrade and award space on American Airlines, on every STL to CUN departure, so you know which flights have space before you book.

Schedule last confirmed . Departure times come from 2LNR's schedule data; confirm with the airline before you book.

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7
Nonstop flights a week
1,241 mi
Nonstop distance
Free
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St. Louis to Cancun flight schedule

Scheduled nonstop departures for STL to CUN, last checked against our schedule feed on September 6, 2026. Airlines retime and cancel flights, so confirm with the airline before you book.

Schedule data dated .

Scheduled nonstop departures from St. Louis (STL) to Cancun (CUN)
Date Flight Airline Departs STL Arrives CUN Duration Aircraft
F9 86Frontier Airlines06:1009:193h 9m321
F9 86Frontier Airlines06:1009:193h 9m321
F9 86Frontier Airlines06:1009:193h 9m321
F9 86Frontier Airlines06:1009:193h 9m321
F9 86Frontier Airlines06:1009:193h 9m321
F9 86Frontier Airlines06:1009:193h 9m321
F9 86Frontier Airlines06:1009:193h 9m321

Showing all 7 scheduled STL to CUN departures across the next 7 days with service. Later dates are on the interactive map.

Departure and arrival times are local at their own airport, so an arrival can fall on a different local date than the departure; the duration column is the true elapsed flying time. A dash means the airline has not filed that value in the schedule data we hold. Aircraft are IATA equipment codes as filed, and can change up to departure.

See every STL to CUN date on the interactive map

Confirmed upgrade & award space on STL to CUN departures

2LNR tracks confirmed upgrade and award space on American Airlines, segment by segment and date by date. Open the calendar for St. Louis to Cancun to see which departures have space, the next 14 days free on every product and the full horizon on Pro.

See real availability

Confirmed upgrade and award seats on each STL to CUN departure, checked against live inventory so you know what is open before you book.

Set an alert

Premium inventory turns over fast. Watch this route and 2LNR notifies you when space appears on a date you are tracking.

Plan on the map

See STL to CUN on the interactive route map, with schedules, connections, and route statistics.

Airlines flying St. Louis to Cancun nonstop

Carriers operating STL to CUN nonstop in the current schedule. 2LNR tracks confirmed upgrade and award space on each of them.

See STL to CUN on the interactive map →

Frequently asked questions about STL to CUN

How far is Cancun from St. Louis?
STL to CUN covers about 1,241 miles nonstop. Flight times vary by aircraft and season; the schedule table on this page lists each scheduled departure with its own times.
Which airlines fly nonstop from STL to CUN?
Frontier Airlines and American Airlines fly the route nonstop. 2LNR tracks confirmed upgrade and award space on American Airlines.
How many flights a week are there from STL to CUN?
About 7 nonstop flights a week run between St. Louis and Cancun in the current schedule, operated by Frontier Airlines and American Airlines. Frequency shifts by season, and the schedule table on this page shows what is scheduled next.
What time do flights from STL to CUN depart?
In the next 7 days with service, every scheduled STL to CUN nonstop leaves at 06:10 local time at St. Louis. The schedule table on this page lists each departure by date.
How do I check upgrade or award availability on STL to CUN?
Open the STL to CUN route on the interactive map or the matrix to see confirmed upgrade and award space by date on American Airlines, the next 14 days free and the full horizon on Pro. On Pro you can also set an alert on the route and 2LNR notifies you when space opens.

Never miss STL to CUN upgrade or award space

See what is open by date on this route, the next 14 days free on every product and the full horizon on Pro.

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