Your next trip, last seen at €182
Lowest observedFrontier Airlines · 1 stop · One wayWhen to fly
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The lowest fare we observed for each month. Open a month to see its days, then pick your outbound and return. A day with no price is one we will search for you.
One-way fare
- Lowest observed
- €182, departing 10 Dec 2026 (Last checked: 14 Oct 2026)One-way fare · Priced departure days checked in the last 14 days: 104Check live prices for this route
- Airlines seen
- Frontier Airlines, Air Canada, Delta Air Lines, Southwest Airlines, United Airlines, Volaris
- Reported fastest flight
- 3h 15m
- Non-stop
- Yes
About this route
Explore the fares we observed from Cancun to St Louis. Prices move often, so pick your dates to see the latest options.
- Route distance
- 1,968 km
- Reported fastest flight
- 3h 15m
- Airlines seen
- Frontier Airlines, Air Canada, Delta Air Lines, Southwest Airlines, United Airlines, Volaris
- Alternative airports
- SUS
Route-level information; individual journeys vary.
Published schedules report non-stop service with Frontier Airlines. Check current timetables.
A clearer picture of your fare
Non-stop airlines seen on this route
| Airline | Non-stop days / priced days | Fastest non-stop |
|---|---|---|
| Frontier Airlines | 77 / 151 | |
| Volaris | 11 / 151 |
Departure days with a non-stop fare checked in the last 14 days. A carrier listed here had a non-stop fare on at least 3 days; schedules may differ.
Airport to city: straight-line distance
- Cancún International Airport (CUN) → Cancun, city gazetteer reference point (21.1619, -86.8515): ≈ 14 km.
- St. Louis Lambert International Airport (STL) → St Louis, city gazetteer reference point (38.6270, -90.1994): ≈ 20 km.
Approximate distances calculated from coordinates, not road distances or travel times. These airports serve the city; they are not confirmed endpoints of an offer.
Lowest fare by departure month
Cheapest month from Cancun to St Louis: December 2026, from €182 (checked 14 Oct 2026).
| Month | Lowest fare | Priced days |
|---|---|---|
| October 2026 | €256 | 10 |
| November 2026 | €187 | 27 |
| December 2026 | €182 | 29 |
| January 2027 | €203 | 25 |
| February 2027 | €204 | 13 |
Lowest fare by day of the week
Cheapest day of the week from Cancun to St Louis: Thursday, from €182 (checked 14 Oct 2026).
| Day | Lowest fare | Priced days |
|---|---|---|
| Monday | €225 | 14 |
| Tuesday | €200 | 16 |
| Wednesday | €187 | 16 |
| Thursday | €182 | 17 |
| Friday | €203 | 16 |
| Saturday | €211 | 15 |
| Sunday | €188 | 10 |
One-way fares checked in the last 14 days. Each figure is the lowest priced departure day we saw, not a guaranteed fare.
Lowest fare by days before departure
Lowest fare from Cancun to St Louis by days until departure (31 to 60 days): €182 (checked 14 Oct 2026).
| Days before departure | Lowest fare | Priced days |
|---|---|---|
| 0 to 7 days | €256 | 6 |
| 8 to 30 days | €203 | 22 |
| 31 to 60 days | €182 | 28 |
| 61 days or more | €200 | 48 |
One-way fares checked in the last 14 days. Each figure is the lowest stored fare for that distance to departure, not a price forecast.
Fares for different departure dates, checked now; not a guide to when to book.
Lowest one-way fare we saw per airline
Cheapest airline from Cancun to St Louis: Frontier Airlines, from €182 (checked 14 Oct 2026).
| Airline | Lowest fare | Priced days |
|---|---|---|
| Frontier Airlines | €182Dec 10, 2026 | 87 |
| Air Canada | €257Apr 7, 2027 | 7 |
| United Airlines | €258Dec 4, 2026 | 5 |
| Volaris | €258Oct 20, 2026 | 11 |
| American Airlines | €269Apr 7, 2027 | 4 |
One-way fares checked in the last 14 days. An airline listed here had a fare on at least 3 departure days. Each figure is the lowest we saw, not a guaranteed fare. Connecting itineraries are included; the date is the departure day of that fare.
Frequently asked
How much is a flight from Cancun to St Louis?
The lowest fare we have observed is €182, found on 14 Oct 2026. Prices move, so read it as a floor rather than a quote.
When is the cheapest month to fly from Cancun to St Louis?
Cheapest month from Cancun to St Louis: December 2026, from €182 (checked 14 Oct 2026).
Are there direct flights from Cancun to St Louis?
Yes. Published schedules report non-stop flights on this route with Frontier Airlines.
Which airlines fly from Cancun to St Louis?
These are the carriers we have seen on the route: Frontier Airlines, Air Canada, Delta Air Lines, Southwest Airlines, United Airlines, Volaris.
How long does the flight from Cancun to St Louis take?
The average journey time across the 108 fares we observed is 4h 44m, including any stops. Individual departures vary; the fastest observed flight is listed in the route facts above.
How many of the observed Cancun to St Louis fares were non-stop?
91 of the 109 fares we observed were non-stop; the rest included at least one stop. That describes our observations, not every flight that operates.
Which airlines had non-stop offers on at least 3 departure dates from Cancun to St Louis?
For Cancun to St Louis, examples of observed one-way non-stop offers checked within the last 14 days: Frontier Airlines (77), Volaris (11). Each number counts distinct departure dates, not weekly flights; check current availability in search.
Which day of the week is cheapest from Cancun to St Louis?
Cheapest day of the week from Cancun to St Louis: Thursday, from €182 (checked 14 Oct 2026).
Which airline has the lowest fare from Cancun to St Louis?
Cheapest airline from Cancun to St Louis: Frontier Airlines, from €182 (checked 14 Oct 2026).
How observed prices work, what "No data" means and what a fare includes: Read the flight price guide
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Recently observed fares. Prices may change.
Last checked: 14 Oct 2026