UA1843 LAX → ORD

United Airlines · Los Angeles, CA to Chicago, IL · 162 flights observed, 2025-07-01 to 2026-02-09 · 1,744 mi

UA1843 covers more than one route in the data window — the stats below are for LAX → ORD, the one it has flown most recently. The others are linked under “Other routes”.

On-time arrival
81%
Median delay
-10 min
90th percentile
+37 min
Cancellation rate
1%

How often is UA1843 on time?

Across 162 flights on LAX → ORD from 2025-07-01 to 2026-02-09, UA1843 arrived within 15 minutes of schedule 81% of the time. The median arrival delay was -10 min, and the worst 10% of flights arrived +37 min or later. 1% of flights were cancelled.

Delay distribution

Arrival delay for completed flights (excludes cancellations and diversions).

ArrivalFlightsShare
Early / on-time12981%
16-30 min128%
31-60 min128%
61-120 min43%
2+ hrs32%

Performance by month

MonthFlightsOn-timeAvg delay
2025-072969%+17 min
2025-083171%+26 min
2025-093093%-13 min
2025-102588%-12 min
2025-121471%+7 min
2026-012387%-2 min
2026-02888%-12 min

Performance by day of week

DayFlightsOn-time
Mon2479%
Tue2070%
Wed1979%
Thu2475%
Fri2592%
Sat2572%
Sun2396%

Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…