AA91American Airlines · LHR → ORD
updated 31m ago
Route confirmed American Airlines

AA91 LondonLHR · 16:30 ChicagoORD · 19:30

AA91 by American Airlines flies from London (LHR) to Chicago (ORD) for the Sun, Nov 1 departure.

Right nowCancelled today · LHR → ORD
Cancelled

today's LHR → ORD operation will not depart

Typical gate push+24 minmedian posted departure
Typical arrival−13 minmedian over 3 operations
Wins back in air~37 minmedian gate push vs arrival · how planes make up time →

Where the minutes go

last 4 operations · gate push → arrival
0+30+60+90 min
11-01
CANCELLED
10-31
+24 gate · −13 arrival
10-30
+49 gate · +2 arrival
10-29
+9 gate · −42 arrival

The bar is how late it left the gate; the ring is where it actually arrived. Board clocks, not estimates.

The route today

live boards
LHRLondonHigh riskLHR delay board →
ORDChicagoOn-time likelyORD delay board →
LHR→ORDevery carrier, schedules and on-time historyRoute intelligence →

Weather lens

Weather-conditioned outlook for this flight right now

Measured, 90-day sample
36%Chance of 15+ min delay
2.1%Chance of cancellation
+9 minTypical airport delay in this weather

Driven mainly by ORD (Chicago), currently flying VFR (visual). 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

London to Chicago with American Airlines · Mon 2 Nov, local date

Outlook: about usual
Chance a departure is cancelled
1.5%0.7× usual
Chance a departure leaves 60+ min late
8.5%1.1× usual

Forecast weather: 80% chance of rain at Chicago

Forecast: GateWeather · incl. data from ECMWF (CC BY 4.0, modified) · About 3 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 London to Chicago flights today

same route · American Airlines
AA87departs 09:45
AA55departs 12:15
AA181departs 19:35

If AA91 is cancelled, these are the other American Airlines nonstop flights from London to Chicago on the same day, with scheduled departure times in LHR 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 AA91 actually runs

Pro Flight Search has tracked every published board update for AA91 across the LHR and ORD boards: schedule changes, gate pushes and actual clocks. Early read: no clear pattern yet. Only 3 completed legs so far: left noticeably late (~24 min) but landed about 13 min early. Not enough to call it.

The verdict above is that record speaking, so it reflects how AA91 operates rather than what the timetable promises. Numbers refresh as new flights operate.

Technical record

How this operation is measured

board clocks

Board log

scheduled → actual, per operation
11-01CANCELLED
10-31LHR 16:30 16:54 (+24)ORD 20:20 20:07 (−13)
10-30LHR 16:30 17:19 (+49)ORD 20:20 20:22 (+2)
10-29LHR 16:30 16:39 (+9)ORD 20:20 19:38 (−42)

Board clocks recorded as LHR and ORD published them.

Planning around AA91? 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: AA91 London to Chicago on-time performance, measured from the LHR and ORD airport boards.

Canonical URL
https://proflightsearch.com/flight/AA91
How we measure this →