UA1646 · UAL1646

UAL1646 over the last 30 days

As of 2026-10-28

UAL1646 is operated by United Airlines on the route San Francisco International Airport (SFO/KSFO) → Baltimore/Washington International Thurgood Marshall Airport (BWI/KBWI). It usually takes off around 06:21 UTC (23:21 local time, SFO). It usually lands around 11:11 UTC (07:11 local time, BWI). Most frequent aircraft type: BOEING 737 MAX 9 (B39M).

Days with an observed flight (last 30 days)

18/30

Days of the week with an observed flight

Mon, Tue, Thu, Fri, Sat, Sun

Typical take-off

06:21 UTC · 23:21 local time (SFO)

Typical landing

11:11 UTC · 07:11 local time (BWI)

Typical time airborne

285 min

Median departure deviation from the usual time on this route

+1 min

Departures within 15 minutes of the usual time

82 %

Departures measured

34

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 MAX 9 (B39M) — Number of flights: 18
• BOEING 737 MAX 8 (B38M) — Number of flights: 3
• BOEING 737-900 (B739) — Number of flights: 2

Aircraft in the last 7 days

• N68811 · BOEING 737-900 2026-10-28
• N17338 · BOEING 737 MAX 8 2026-10-27
• N27261 · BOEING 737 MAX 8 2026-10-26
• N77584 · BOEING 737 MAX 9 2026-10-24
• N17407 · BOEING 737 MAX 9 2026-10-23

Related flights on this route

• All flights KSFO – KBWI