United Airlines UA3638 On Time IAD Washington → PWM Portland 1h 57m 793km / 489mi 23. May 2025 DEPARTURE 17:18 EDT 21:18 UTC -1 minutes GATE: A3B ARRIVAL 19:17 EDT 23:17 UTC GATE: 1A AIRLINE United Airlines UA / UAL FREQUENCY 6x per week DISTANCE 793km FLIGHTS/WEEK 33 PUNCTUALITY 78%