JST → IAD: cancellations & delays
Over Jan 2023 - Apr 2026, 2.6% of John Murtha Johnstown Cambria County Airport (JST) to Washington Dulles International Airport (IAD) flights were cancelled and 19.2% arrived at least 15 minutes late, across 1,206 flights, flown by OO. Cancellations peak in January.
Check today's live JST departures →Airport pages: John Murtha Johnstown Cambria County Airport (JST) · Washington Dulles International Airport (IAD)
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.