DEN → STL: cancellations & delays
Over Jan 2023 - Apr 2026, 0.9% of Denver International Airport (DEN) to St. Louis Lambert International Airport (STL) flights were cancelled and 23.8% arrived at least 15 minutes late, across 12,702 flights, flown by WN, UA, F9, OO. Cancellations peak in January.
Check today's live DEN departures →Airport pages: Denver International Airport (DEN) · St. Louis Lambert International Airport (STL)
Rates are historical averages from U.S. DOT (BTS) on-time records; a specific flight's live estimate can differ with weather and the day's disruptions.