ON TIMEBOARD
United Airlines / ORD → LAX

UA 1044 on time

United Airlines 1044: Chicago to Los Angeles at 8:50 a.m.; Houston to Chicago at 5:00 a.m. (past 12 months). Figures below the title are for ORD → LAX, its busiest leg

On time
80%
246 flights · likely 75–85%
Cancelled
0.0%
of scheduled flights
Typical arrival
−7 min
median vs schedule
When late
+58 min
average delay
Similar flights
86%
UA, same route & hour

About 1 in 5 UA 1044 flights from Chicago arrived 15+ minutes late, diverted or cancelled over the past year (20%); 0.0% were cancelled. The typical flight landed 7 minutes early.

UA 1044: ORD → LAX

Scheduled to leave Chicago at 8:50 a.m. local time. Over the past year it arrived on time 80% of the time (246 flights), worse than other UA flights on the route at that hour (86%). Last seen in the data Aug 10, 2026.

Month by month

40%70%100%Jul 2025: 65% on time (31 flights)65JulAug 2025: 81% on time (31 flights)81AugSep 2025: 93% on time (30 flights)93SepOct 2025: 81% on time (31 flights)81OctNov 2025: 77% on time (30 flights)77NovDec 2025: 58% on time (31 flights)58DecJan 2026: 77% on time (31 flights)77JanFeb 2026: too few flights (11 flights)FebMay 2026: too few flights (11 flights)MayJun 2026: 70% on time (30 flights)70JunJul 2026: 94% on time (31 flights)94JulAug 2026: too few flights (10 flights)Aug

By day of week

DayFlightsOn time
Monday3686%
Tuesday3591%
Wednesday3574%
Thursday3589%
Friday3577%
Saturday3574%
Sunday3571%

Why it was late

Airline (crew, maintenance, ops) 52%Air traffic & airport (NAS) 22%Late inbound plane 21%Severe weather 6%

All flights ORD → LAX · Connecting off UA 1044? Check the risk

UA 1044: IAH → ORD

Scheduled to leave Houston at 5:00 a.m. local time. Over the past year it arrived on time 96% of the time (173 flights), in line with other UA flights on the route at that hour (95%). Last seen in the data Aug 31, 2026.

Month by month

40%70%100%Dec 2025: too few flights (13 flights)DecJan 2026: too few flights (4 flights)JanFeb 2026: 94% on time (17 flights)94FebMar 2026: 93% on time (28 flights)93MarApr 2026: too few flights (1 flights)AprMay 2026: 94% on time (18 flights)94MayJun 2026: 100% on time (30 flights)100JunJul 2026: 100% on time (31 flights)100JulAug 2026: 94% on time (31 flights)94Aug

By day of week

DayFlightsOn time
Monday2496%
Tuesday2295%
Wednesday25100%
Thursday2492%
Friday2692%
Saturday25100%
Sunday2796%

Why it was late

Air traffic & airport (NAS) 42%Late inbound plane 26%Severe weather 17%Airline (crew, maintenance, ops) 15%

All flights IAH → ORD · Connecting off UA 1044? Check the risk

Questions

How often is UA 1044 from ORD to LAX late?

United Airlines 1044 from Chicago, IL to Los Angeles, CA arrived 15 or more minutes late, was diverted or was cancelled on 20% of 246 scheduled flights between September 2025 and August 2026. 0.0% were cancelled.

How often is UA 1044 from IAH to ORD late?

United Airlines 1044 from Houston, TX to Chicago, IL arrived 15 or more minutes late, was diverted or was cancelled on 4% of 173 scheduled flights between September 2025 and August 2026. 0.0% were cancelled.

Flight numbers change. Figures cover flights with this airline, number and route only. "Likely range" is the 95% interval for the true on-time rate given the number of flights. This is history, not live status: check United Airlines for today's flight. Method.