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

Frontier Airlines and American Airlines fly the CUN to STL nonstop about 7 times a week. The timetable below shows the nonstop scheduled at 3h 17m to 3h 19m for the 1,241 miles. 2LNR checks confirmed upgrade and award space on American Airlines flights on this route, so you can see which departures have space before you book.

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

Updated .

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7
Flights a week, 4-week average
3h 17m to 3h 19m
Scheduled flight time
1,241 mi
Nonstop distance
Free
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Cancun to St. Louis flight schedule

Scheduled nonstop departures for CUN to STL starting October 22, 2026, last checked against our schedule feed on October 18, 2026. Airlines retime and cancel flights, so confirm with the airline before you book.

Schedule data dated .

Scheduled nonstop departures from Cancun (CUN) to St. Louis (STL)
Date Flight Airline Departs CUN Arrives STL Duration Aircraft
F9 87Frontier Airlines11:0814:253h 17mAirbus A321neo family
F9 87Frontier Airlines11:0814:253h 17mAirbus A321neo family
F9 87Frontier Airlines11:0814:253h 17mAirbus A321neo family
F9 87Frontier Airlines11:0814:253h 17mAirbus A321neo family
F9 87Frontier Airlines11:0814:253h 17mAirbus A321neo family
F9 87Frontier Airlines11:0414:233h 19mAirbus A321neo family
F9 87Frontier Airlines11:0414:233h 19mAirbus A321neo family

Showing all 7 scheduled CUN to STL departures across 7 days with service, starting October 22, 2026. 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 hasn't filed that value in the schedule data we hold. Aircraft are the equipment the airline filed, named where the code pins down one type and shown as the family or the bare code where it doesn't. Swaps can happen up to departure.

See every CUN to STL date on the interactive map

Aircraft on the Cancun to St. Louis nonstop

Frontier Airlines flies the Airbus A321neo family on every departure in the schedule table on this page. Each linked aircraft page shows where that airline schedules it. Airlines can swap aircraft up to departure.

Confirmed upgrade & award space on CUN to STL departures

2LNR tracks confirmed upgrade and award space on American Airlines, segment by segment and date by date. Open the calendar for Cancun to St. Louis 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 or award seats by date on the CUN to STL departures 2LNR tracks, checked against live inventory so you know what's open before you book.

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

Plan on the map

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

Airlines flying Cancun to St. Louis nonstop

Carriers operating CUN to STL nonstop in the current schedule. Where 2LNR tracks the carrier, its departures show confirmed upgrade or award space by date.

See CUN to STL on the interactive map →

Frequently asked questions about CUN to STL

How long is the flight from Cancun (CUN) to St. Louis (STL)?
Scheduled flight times from Cancun (CUN) to St. Louis (STL) run from 3h 17m to 3h 19m across the departures in the schedule table on this page. The nonstop covers about 1,241 miles, and airlines adjust scheduled times by season, so confirm with the airline before you book.
Which airlines fly nonstop from CUN to STL?
Frontier Airlines and American Airlines fly CUN to STL nonstop. 2LNR tracks confirmed upgrade and award space on American Airlines.
How many flights a week are there from CUN to STL?
About 7 nonstop flights a week run between Cancun (CUN) and St. Louis (STL) 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 CUN to STL depart?
Scheduled CUN to STL nonstops in the next 7 days with service leave between 11:04 and 11:08, local time at Cancun. The schedule table on this page lists every departure by date, with its arrival time and aircraft.
Which flights operate CUN to STL nonstop?
Frontier Airlines flies F9 87 nonstop from Cancun (CUN) to St. Louis (STL), the only flight number in the schedule table on this page. The table lists each date with its departure and arrival times and aircraft.
How do I check upgrade or award availability on CUN to STL?
Open the CUN to STL 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 CUN to STL upgrade or award space

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

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