American Airlines
Is AA4678 delayed?
Yes — AA4678 landed in St Louis 26 min late, at 19:47 on Sep 8 (as of Sep 9, 00:47 UTC).
Usually on time: arrived within 15 min of schedule on 7 of the last 12 flights.
Each route and date is shown separately. Confirm that both airports match your booking.
26 min late
Official source · Updated
Departure
Boston
BOS
Actual
Scheduled 17:43
Sep 8
Arrival
St Louis
STL
Actual
Scheduled 19:21
Sep 8
Times shown in airport local time
Service date: · Scheduled departure date (America/New_York)
Flight details
Departure · UTC
- Scheduled
- Estimated
- Not available
- Actual
Arrival · UTC
- Scheduled
- Estimated
- Not available
- Actual
5 min early
Official source · Updated
Departure
St Louis
STL
Actual
Scheduled 20:16
Sep 8
Arrival
Boston
BOS
Actual
Scheduled 23:36
Sep 8
Times shown in airport local time
Service date: · Scheduled departure date (America/Chicago)
Flight details
Departure · UTC
- Scheduled
- Estimated
- Not available
- Actual
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.
- 5 min early
St Louis → Boston
- 26 min late
Boston → St Louis
- On schedule (3 min behind)
St Louis → Boston
- On schedule (7 min behind)
Boston → St Louis
- 128 min late
St Louis → Boston
Is AA4678 usually late?
Observation window: Aug 31, 2026 – Sep 30, 2026
On time means arriving no more than 15 minutes after the scheduled time; late means more than 15 minutes after. Cancelled and diverted flights are counted apart from arrivals. Results compare scheduled and actual arrival times. Cancelled or diverted flights are excluded. Some flights may be missing from the history.
At the airports today
Boston (BOS) departures
- Left more than 15 min late
- 102 of 239
- Cancelled today
- 2
Related flights
Flight history and details
| Service date | Departure | Arrival | Actual | Arrival delay (minutes) |
|---|---|---|---|---|
| Sep 8, 2026Arrived | St Louis | Boston | -5 | |
| Sep 8, 2026Arrived | Boston | St Louis | 26 | |
| Sep 7, 2026Arrived | St Louis | Boston | 3 | |
| Sep 7, 2026Arrived | Boston | St Louis | 7 | |
| Sep 6, 2026Arrived | St Louis | Boston | 128 | |
| Sep 6, 2026Arrived | Boston | St Louis | 128 | |
| Sep 5, 2026Arrived | St Louis | Boston | -6 | |
| Sep 5, 2026Arrived | Boston | St Louis | -24 | |
| Sep 4, 2026Arrived | St Louis | Boston | 55 | |
| Sep 4, 2026Arrived | Boston | St Louis | 80 | |
| Sep 1, 2026Arrived | Boston | St Louis | 3 | |
| Aug 31, 2026Arrived | Boston | St Louis | -16 |
Email me if AA4678 runs late
We email you if your next AA4678 flight in the coming day is more than 15 minutes late, cancelled or diverted. Alerts last 30 days. No account needed.