--- title: "St. Louis (STL) to Cancun (CUN) flights: who flies it" description: "American Airlines and Frontier Airlines fly nonstop from STL to CUN, about 7 flights a week. See confirmed upgrade and award space by date on 2LNR, the next 14 days free." canonical: "https://2lnr.com/routes/stl-cun" url: "https://2lnr.com/routes/stl-cun.md" date_modified: "2026-10-18T05:10:47Z" --- # 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. The timetable below shows the nonstop scheduled at 3h 9m 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 October 18, 2026. Departure times come from 2LNR's schedule data; confirm with the airline before you book. Updated October 23, 2026. See STL to CUN on the interactive map [Get started free](https://2lnr.com/login) 7 Flights a week, 4-week average 3h 9m Scheduled flight time 1,241 mi Nonstop distance Free To get started ## St. Louis to Cancun flight schedule Scheduled nonstop departures for STL to CUN starting October 23, 2026, last checked against our schedule feed on October 18, 2026. Airlines retime and cancel flights, so confirm with the airline before you book. Scheduled nonstop departures from St. Louis (STL) to Cancun (CUN) | Date | Flight | Airline | Departs STL | Arrives CUN | Duration | Aircraft | | :--- | :--- | :--- | :--- | :--- | :--- | :--- | | Fri, Oct 23 | F9 86 | Frontier Airlines | 06:30 | 09:39 | 3h 9m | [Airbus A320neo](https://2lnr.com/seatmaps/f9/a320neo.md) | | Sat, Oct 24 | F9 86 | Frontier Airlines | 06:30 | 09:39 | 3h 9m | [Airbus A321neo family](https://2lnr.com/seatmaps/f9/a321neo.md) | | Sun, Oct 25 | F9 86 | Frontier Airlines | 06:30 | 09:39 | 3h 9m | Airbus A321neo family | | Mon, Oct 26 | F9 86 | Frontier Airlines | 06:30 | 09:39 | 3h 9m | Airbus A321neo family | | Tue, Oct 27 | F9 86 | Frontier Airlines | 06:10 | 09:19 | 3h 9m | Airbus A321neo family | | Wed, Oct 28 | F9 86 | Frontier Airlines | 06:10 | 09:19 | 3h 9m | Airbus A321neo family | | Thu, Oct 29 | F9 86 | Frontier Airlines | 06:10 | 09:19 | 3h 9m | Airbus A321neo family | Showing all 7 scheduled STL to CUN departures across 7 days with service, starting October 23, 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 STL to CUN date on the interactive map ## Aircraft on the St. Louis to Cancun nonstop Frontier Airlines flies the departures in the schedule table on this page with the [Airbus A321neo family](https://2lnr.com/seatmaps/f9/a321neo.md) and the [Airbus A320neo](https://2lnr.com/seatmaps/f9/a320neo.md). Each linked aircraft page shows where that airline schedules it. Airlines can swap aircraft up to departure. ## 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 or award seats by date on the STL to CUN departures 2LNR tracks, checked against live inventory so you know what's open before you book. ### Set an alert 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 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. Where 2LNR tracks the carrier, its departures show confirmed upgrade or award space by date. - [Frontier Airlines (F9) route map](https://2lnr.com/routes/airlines/f9.md)\ [The aircraft F9 flies](https://2lnr.com/seatmaps/f9.md) - [American Airlines (AA) route map](https://2lnr.com/routes/airlines/aa.md)\ [The aircraft AA flies](https://2lnr.com/seatmaps/aa.md) See STL to CUN on the interactive map → ## Frequently asked questions about STL to CUN **How long is the flight from St. Louis (STL) to Cancun (CUN)?** F9 86 is scheduled at 3h 9m from St. Louis (STL) to Cancun (CUN) on every departure 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 STL to CUN?** Frontier Airlines and American Airlines fly STL to CUN 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 (STL) and Cancun (CUN) 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?** Scheduled STL to CUN nonstops in the next 7 days with service leave between 06:10 and 06:30, local time at St. Louis. The schedule table on this page lists every departure by date, with its arrival time and aircraft. **Which flights operate STL to CUN nonstop?** Frontier Airlines flies F9 86 nonstop from St. Louis (STL) to Cancun (CUN), 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 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. Flying the other way? See [CUN to STL upgrade and award space](https://2lnr.com/routes/cun-stl.md). Award seats rather than schedules? See [American Airlines award availability](https://2lnr.com/awards/aa.md). Looking beyond this route? See [every route from St. Louis (STL)](https://2lnr.com/routes/stl.md), or [every route from Cancun (CUN)](https://2lnr.com/routes/cun.md). - [How American upgrades clear](https://2lnr.com/about/aa/upgrades.md) - [How to read award availability by date](https://2lnr.com/guides/award-availability.md) ## Never miss STL to CUN 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. [Get started free](https://2lnr.com/login)