ON TIMEBOARD

AA 673 on time

American Airlines 673: Chicago to New York at 5:38 p.m. (past 12 months)

On time
43%
127 flights · likely 34–51%
Cancelled
1.6%
of scheduled flights
Typical arrival
+21 min
median vs schedule
When late
+83 min
average delay
Similar flights
50%
AA, same route & hour

About 6 in 10 AA 673 flights from Chicago arrived 15+ minutes late, diverted or cancelled over the past year (57%); 1.6% were cancelled. The typical flight landed 21 minutes late.

AA 673: ORD → LGA

Scheduled to leave Chicago at 5:38 p.m. local time. Over the past year it arrived on time 43% of the time (127 flights), worse than other AA flights on the route at that hour (50%). Last seen in the data Aug 31, 2026.

Month by month

20%60%100%Mar 2025: too few flights (2 flights)MarApr 2025: 73% on time (30 flights)73AprMay 2025: too few flights (4 flights)MayJun 2025: 38% on time (26 flights)38JunJul 2025: 42% on time (31 flights)42JulAug 2025: 48% on time (31 flights)48AugSep 2025: 38% on time (26 flights)38SepOct 2025: 43% on time (30 flights)43OctNov 2025: too few flights (1 flights)NovApr 2026: 29% on time (24 flights)29AprMay 2026: 58% on time (19 flights)58MayAug 2026: 44% on time (27 flights)44Aug

By day of week

DayFlightsOn time
Monday19—
Tuesday19—
Wednesday19—
Thursday19—
Friday19—
Saturday14—
Sunday18—

Why it was late

Late inbound plane 49%Air traffic & airport (NAS) 34%Airline (crew, maintenance, ops) 15%Severe weather 1%

All flights ORD → LGA · Connecting off AA 673? Check the risk

Questions

How often is AA 673 from ORD to LGA late?

American Airlines 673 from Chicago, IL to New York, NY arrived 15 or more minutes late, was diverted or was cancelled on 57% of 127 scheduled flights between September 2025 and August 2026. 1.6% 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.