Is AA851 delayed?
Service date: · Scheduled departure date (America/Chicago)
Arrived
4 min early
Official source · Updated
Departure
Chicago
ORD
Scheduled
Sep 16
Arrival
Atlanta
ATL
Actual
Scheduled 11:17
Sep 16
Times shown in airport local time
Flight details
Departure · UTC
- Scheduled
- Estimated
- Not available
- Actual
- Not available
Arrival · UTC
- Scheduled
- Estimated
- Not available
- Actual
Recent arrivals
Dates below are arrival dates in the destination airport’s time zone. The detailed history uses service dates.
- 4 min early
ORD → ATL
- 23 min early
ORD → ATL
- 3 min early
ORD → ATL
- 7 min early
ORD → ATL
- 11 min early
ORD → ATL
Flight history and details
Aug 18, 2026 — Sep 17, 2026
- Observed arrivals
- 18
- Arrivals over 15 minutes late
- 1
- Observed cancellations
- 1
- Observed occurrences
- 33
Results compare scheduled and actual arrival times. Cancelled or diverted flights are excluded. Some flights may be missing from the history.
| Service date | Departure | Arrival | Actual | Arrival delay (minutes) |
|---|---|---|---|---|
| Sep 17, 2026Cancelled | Chicago | Atlanta | Not available | Not available |
| Sep 16, 2026Arrived | Chicago | Atlanta | -4 | |
| Sep 14, 2026Arrived | Chicago | Atlanta | -23 | |
| Sep 13, 2026Arrived | Chicago | Atlanta | -3 | |
| Sep 12, 2026Arrived | Chicago | Atlanta | -7 | |
| Sep 10, 2026Arrived | Chicago | Atlanta | -11 | |
| Sep 9, 2026Arrived | Chicago | Atlanta | -19 | |
| Sep 8, 2026Arrived | Missoula | Dallas-Fort Worth | -3 | |
| Sep 8, 2026Arrived | Dallas-Fort Worth | Missoula | -11 | |
| Sep 7, 2026Arrived | Missoula | Dallas-Fort Worth | -5 | |
| Sep 7, 2026Arrived | Dallas-Fort Worth | Missoula | 3 | |
| Sep 6, 2026Arrived | Missoula | Dallas-Fort Worth | -9 | |
| Sep 6, 2026Arrived | Dallas-Fort Worth | Missoula | -6 | |
| Sep 5, 2026Arrived | Missoula | Dallas-Fort Worth | -19 | |
| Sep 5, 2026Arrived | Dallas-Fort Worth | Missoula | -32 | |
| Sep 4, 2026Arrived | Missoula | Dallas-Fort Worth | -17 | |
| Sep 4, 2026Arrived | Dallas-Fort Worth | Missoula | -15 | |
| Sep 1, 2026Arrived | Dallas-Fort Worth | Missoula | -8 | |
| Aug 31, 2026Arrived | Dallas-Fort Worth | Missoula | 47 |