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. 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 CUN to STL 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
To get started

Cancun to St. Louis flight schedule

Scheduled nonstop departures for CUN to STL, 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 Cancun (CUN) to St. Louis (STL)
Date Flight Airline Departs CUN Arrives STL Duration Aircraft
F9 87Frontier Airlines11:0414:233h 19m32Q
F9 87Frontier Airlines11:0414:233h 19m32Q
F9 87Frontier Airlines11:0414:233h 19m32Q
F9 87Frontier Airlines11:0414:233h 19m32Q
F9 87Frontier Airlines11:0414:233h 19m32Q
F9 87Frontier Airlines11:0414:233h 19m32Q
F9 87Frontier Airlines11:0414:233h 19m32Q

Showing all 7 scheduled CUN to STL 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 CUN to STL date on the interactive map

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 and award seats on each CUN to STL 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 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. 2LNR tracks confirmed upgrade and award space on each of them.

See CUN to STL on the interactive map →

Frequently asked questions about CUN to STL

How far is St. Louis from Cancun?
CUN to STL 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 CUN to STL?
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 CUN to STL?
About 7 nonstop flights a week run between Cancun and St. Louis 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?
In the next 7 days with service, every scheduled CUN to STL nonstop leaves at 11:04 local time at Cancun. The schedule table on this page lists each departure by date.
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 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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