The route from Joslin Field Magic Valley Regional Airport (KTWF) in Twin Falls to Washington Dulles International Airport (KIAD) in Washington, DC. SkyMeter tracks roughly 1 scheduled flights on this route. The most active operator is EJA (EJA). Average block time is 3h 48m. Departures average 6 minutes off schedule, with 0% running more than 15 minutes late.