United Airlines UA521 Landed BOS Boston → IAD Washington 1h 4m 748km / 461mi (Direct: 664km, +11%) 22. May 2025 DEPARTURE 09:38 EDT 13:38 UTC 09:30 +8 minutes TERMINAL: B GATE: B26 ARRIVAL 10:43 EDT 14:43 UTC 11:10 -27 minutes TERMINAL: D14 GATE: D14 Boeing B737-800 N76528 Powered by adsbexhange.com Altitude ft Speed kts Track ° AIRLINE United Airlines UA / UAL FREQUENCY irregular/new DISTANCE 664km FLIGHTS/WEEK 36 PUNCTUALITY 85%