AA4539American Airlines · PIT → ORD
live · 40m ago
Route confirmed American Airlines

AA4539 PittsburghPIT ChicagoORD

AA4539 by American Airlines flies from Pittsburgh (PIT) to Chicago (ORD).

Right nowNext departure tomorrow Operates daily
08:00

scheduled from PIT

The route today

live boards
PITPittsburghOn-time likelyPIT delay board →
ORDChicagoOn-time likelyORD delay board →
PIT→ORDevery carrier, schedules and on-time historyRoute intelligence →

Weather lens

Delay & cancellation outlook for this flight

Measured, 90-day sample
39%Chance of 15+ min delay
1.6%Chance of cancellation
+9 minTypical airport delay in this weather

Conditions at PIT and ORD are near their clear-air norm right now, so this reflects the route's recent baseline rather than a weather penalty. These figures come from both airports' records under conditions like today's, over the last 90 days.

Pro Flight Search tracking, 90 days · the weather × delay correlation study → · live weather risk by airport →

Tomorrow on this route

Forecast

Pittsburgh to Chicago with American Airlines · Sun 1 Nov, local date

Outlook: about usual
Chance a departure leaves 60+ min late
8.4%0.7× usual

No cancellation outlook here: this airport's board does not publish cancellations reliably.

Forecast: GateWeather · incl. data from ECMWF (CC BY 4.0, modified) · About 5 departures a day on this route with this airline. · Expected values for tomorrow from a forecast model, kept apart from today's measured figures.

When it flies

scheduled departures
061422
M
T
W
T
F
S
S

Each mark is a scheduled departure at its origin-local time. Today is highlighted.

Other Pittsburgh to Chicago flights today

same route · American Airlines
AA3300departs 05:45
AA2097departs 06:05
AA640departs 06:34
AA4525departs 10:04
AA6473departs 11:35
AA4479departs 13:02

If AA4539 is cancelled, these are the other American Airlines nonstop flights from Pittsburgh to Chicago on the same day, with scheduled departure times in PIT local time. Most flights that show a delay still operate. Rebooking usually helps only when that delay is very large. Every airline on this route →

How AA4539 actually runs

Pro Flight Search has tracked every published board update for AA4539 across the PIT and ORD boards: schedule changes, gate pushes and actual clocks. Combined risk score: 33.0/100. Based on airport operations, weather, and cached board history at PIT and ORD.

The verdict above is that record speaking, so it reflects how AA4539 operates rather than what the timetable promises. Numbers refresh as new flights operate.

Planning around AA4539? Will a delayed flight be cancelled? · Do planes make up time in the air? · How we measure

Cite this data

Journalists, bloggers, and researchers may cite this page with attribution and a link to Pro Flight Search.

Suggested citation

Pro Flight Search: AA4539 Pittsburgh to Chicago on-time performance, measured from the PIT and ORD airport boards.

Canonical URL
https://proflightsearch.com/flight/AA4539
How we measure this →