UA721 · UAL721

UAL721 over the last 30 days

As of 2026-10-26

UAL721 is operated by United Airlines on the route Boston Logan International Airport (BOS/KBOS) → Washington Dulles International Airport (IAD/KIAD). It usually takes off around 18:34 UTC (14:34 local time, BOS). It usually lands around 19:58 UTC (15:58 local time, IAD). Most frequent aircraft type: BOEING 737-900 (B739).

Days with an observed flight (last 30 days)

28/30

Days of the week with an observed flight

Mon, Tue, Wed, Thu, Fri, Sat, Sun

Typical take-off

18:34 UTC · 14:34 local time (BOS)

Typical landing

19:58 UTC · 15:58 local time (IAD)

Typical time airborne

76 min

Median departure deviation from the usual time on this route

0 min

Departures within 15 minutes of the usual time

86 %

Departures measured

78

Our measurement against the usual departure time of the route, from our own observations over the last 28 days; the figures cover all flights of this airline on the route.

Aircraft types on this flight (last 30 days)

• BOEING 737-900 (B739) — Number of flights: 23
• AIRBUS A-319 (A319) — Number of flights: 4
• BOEING 737 MAX 9 (B39M) — Number of flights: 1

Aircraft in the last 7 days

• N67846 · BOEING 737-900 2026-10-26
• N37468 · BOEING 737-900 2026-10-25
• N821UA · AIRBUS A-319 2026-10-24
• N37462 · BOEING 737-900 2026-10-23
• N68452 · BOEING 737-900 2026-10-22
• N69829 · BOEING 737-900 2026-10-21

Related flights on this route

• All flights KBOS – KIAD