Direct flights from St Louis to Cancún STL → CUN
American Airlines, Frontier Airlines and Southwest Airlines operate nonstop flights from St Louis (STL) to Cancún (CUN). The nonstop flight takes around ~2h 30m, covering 1,241 miles (1,997 km). Updated 28 June 2026.
STL
→
CUN
Round trip
1 adult
Economy
Pick dates
📬 Cheap nonstop deals from St Louis
We'll email you when a fare from STL drops well below normal. Free, weekly, no password needed.
Free · weekly digest · no password needed
American Airlines
AA
Frontier Airlines
F9
Southwest Airlines
WN
Departure Schedule next 7 days
Sign up to see Cancún schedule from STL
Already have an account? Sign in
Frequently asked questions
Is there a direct flight from St Louis to Cancún?
Yes, American Airlines, Frontier Airlines and 1 more airline operate nonstop flights from St Louis (STL) to Cancún (CUN).
Which airlines fly direct from St Louis to Cancún?
American Airlines, Frontier Airlines, Southwest Airlines operate nonstop flights from St Louis to Cancún.
How long is the flight from St Louis to Cancún?
The nonstop flight from St Louis to Cancún takes ~2h 30m (approximately 1997 km).