UA3900 Flight Status United Airlines: Chicago to Los Angeles (UAL3900)

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UA 3900 Chicago to Los Angeles Flight Status

Not scheduled today (November 9th, 2026). Latest flight: September 18th, 2026 ; recent history is in the table below.

UA 3900 Flight Status & Schedule United Airlines Chicago to Los Angeles

Date From To Departure Arrival Status Details
Sep 18 ORD LAX 16:21 17:55 Landed Track >
Aug 30 ORD LAX 09:38 11:16 Landed Track >

United Airlines operates UA 3900 from Chicago to Los Angeles, a 2,802 km (1,741 mi) trip. The timetable allows 4 h 22 min; there is not enough recent history yet to say how long it usually takes. It is not flying today; the last flight, on 18 September 2026, landed on time.

< All Chicago ORD Departures All Los Angeles LAX Arrivals >

About UA 3900

Route
Chicago O'Hare International Airport ORD to Los Angeles International Airport LAX
Distance
2,802 km (1,741 mi)
Scheduled flight time
4 h 22 min

UA 3900 FAQ

How long is the UA3900 flight?
The timetable allows 4 h 22 min. Chicago to Los Angeles is 2,802 km (1,741 mi).
What other flight numbers does UA3900 have?
Also listed as UAL3900 (United Airlines' ICAO code) and UA 3900.

UA3900 and Chicago ORD to Los Angeles LAX Flights

Other flights departing from Chicago ORD: G74448, OO5907, AA9870, MQ9870

Other flights arriving at Los Angeles LAX: UA1181, UA393, UA5968, UA5731

All flights connecting Chicago ORD to Los Angeles LAX.