ON TIMEBOARD

AA 1979 on time

American Airlines 1979: Chicago to Los Angeles at 10:30 a.m. (past 12 months)

On time
70%
273 flights · likely 64–75%
Cancelled
0.0%
of scheduled flights
Typical arrival
+1 min
median vs schedule
When late
+75 min
average delay
Similar flights
77%
AA, same route & hour

About 1 in 3 AA 1979 flights from Chicago arrived 15+ minutes late, diverted or cancelled over the past year (30%); 0.0% were cancelled. The typical flight landed 1 minutes late.

AA 1979: ORD → LAX

Scheduled to leave Chicago at 10:30 a.m. local time. Over the past year it arrived on time 70% of the time (273 flights), worse than other AA flights on the route at that hour (77%). Last seen in the data Aug 31, 2026.

Month by month

30%65%100%Aug 2025: 77% on time (31 flights)77AugSep 2025: 78% on time (27 flights)78SepOct 2025: too few flights (5 flights)OctNov 2025: 68% on time (28 flights)68NovDec 2025: 65% on time (31 flights)65DecJan 2026: too few flights (5 flights)JanMar 2026: 83% on time (24 flights)83MarApr 2026: 43% on time (30 flights)43AprMay 2026: 84% on time (31 flights)84MayJun 2026: 63% on time (30 flights)63JunJul 2026: 87% on time (31 flights)87JulAug 2026: 52% on time (31 flights)52Aug

By day of week

DayFlightsOn time
Monday4168%
Tuesday3972%
Wednesday3871%
Thursday3778%
Friday3977%
Saturday3858%
Sunday4163%

Why it was late

Late inbound plane 46%Airline (crew, maintenance, ops) 32%Air traffic & airport (NAS) 17%Severe weather 5%

All flights ORD → LAX · Connecting off AA 1979? Check the risk

Questions

How often is AA 1979 from ORD to LAX late?

American Airlines 1979 from Chicago, IL to Los Angeles, CA arrived 15 or more minutes late, was diverted or was cancelled on 30% of 273 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 American Airlines for today's flight. Method.