UA2166 · UAL2166

UAL2166 over the last 30 days

As of 2026-10-27

UAL2166 is operated by United Airlines on the route Ronald Reagan Washington National Airport (DCA/KDCA) → San Francisco International Airport (SFO/KSFO). It usually takes off around 22:37 UTC (18:37 local time, DCA). It usually lands around 03:47 UTC (20:47 local time, SFO). Most frequent aircraft type: BOEING 757-200 (B752).

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

22:37 UTC · 18:37 local time (DCA)

Typical landing

03:47 UTC · 20:47 local time (SFO)

Typical time airborne

308 min

Median departure deviation from the usual time on this route

−4 min

Departures within 15 minutes of the usual time

91 %

Departures measured

35

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 757-200 (B752) — Number of flights: 37
• BOEING 737 MAX 8 (B38M) — Number of flights: 2
• BOEING 737-800 (B738) — Number of flights: 2

Aircraft in the last 7 days

• N38257 · BOEING 737-800 2026-10-27
• N37368 · BOEING 737 MAX 8 2026-10-26
• N73256 · BOEING 737-800 2026-10-26
• N27266 · BOEING 737 MAX 8 2026-10-25
• N19130 · BOEING 757-200 2026-10-25
• N57111 · BOEING 757-200 2026-10-23

Related flights on this route

• All flights KDCA – KSFO