PHX → STL: cancellations & delays
Over Jan 2023 - Apr 2026, 0.4% of Phoenix Sky Harbor International Airport (PHX) to St. Louis Lambert International Airport (STL) flights were cancelled and 20.0% arrived at least 15 minutes late, across 7,379 flights, flown by WN, AA, OO, F9, MQ. Cancellations peak in January.
Check today's live PHX departures →Airport pages: Phoenix Sky Harbor International Airport (PHX) · 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.