ON TIMEBOARD

AA 4134 on time

American Airlines 4134: Syracuse to Chicago at 6:00 a.m. (past 12 months)

On time
87%
136 flights · likely 80–91%
Cancelled
0.0%
of scheduled flights
Typical arrival
−11 min
median vs schedule
When late
+137 min
average delay
Similar flights
77%
AA, same route & hour

About 1 in 8 AA 4134 flights from Syracuse arrived 15+ minutes late, diverted or cancelled over the past year (13%); 0.0% were cancelled. The typical flight landed 11 minutes early.

AA 4134: SYR → ORD

Scheduled to leave Syracuse at 6:00 a.m. local time, operated by Envoy as MQ 4134. Over the past year it arrived on time 87% of the time (136 flights), better than other AA flights on the route at that hour (77%). Last seen in the data Aug 4, 2026.

Month by month

40%70%100%Apr 2025: 67% on time (30 flights)67AprMay 2025: 90% on time (30 flights)90MayJun 2025: 86% on time (22 flights)86JunJul 2025: 91% on time (23 flights)91JulAug 2025: 69% on time (29 flights)69AugSep 2025: 77% on time (30 flights)77SepOct 2025: 87% on time (30 flights)87OctNov 2025: too few flights (1 flights)NovMay 2026: too few flights (10 flights)MayJun 2026: 93% on time (30 flights)93JunJul 2026: 94% on time (31 flights)94JulAug 2026: too few flights (4 flights)Aug

By day of week

DayFlightsOn time
Monday2095%
Tuesday2090%
Wednesday19—
Thursday19—
Friday19—
Saturday2080%
Sunday19—

Why it was late

Airline (crew, maintenance, ops) 46%Late inbound plane 32%Severe weather 11%Air traffic & airport (NAS) 10%Security 2%

All flights SYR → ORD · Connecting off AA 4134? Check the risk

Questions

How often is AA 4134 from SYR to ORD late?

American Airlines 4134 from Syracuse, NY to Chicago, IL arrived 15 or more minutes late, was diverted or was cancelled on 13% of 136 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.