STL → PIT: cancellations & delays
Over Jan 2023 - Apr 2026, 0.2% of St. Louis Lambert International Airport (STL) to Pittsburgh International Airport (PIT) flights were cancelled and 18.8% arrived at least 15 minutes late, across 1,326 flights, flown by WN. Cancellations peak in August.
Check today's live STL departures →Airport pages: St. Louis Lambert International Airport (STL) · Pittsburgh International Airport (PIT)
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.