Is UA3551 delayed?
Service date: · Scheduled departure date (America/Chicago)
Arrived
36 min early
Updated
Departure
Chicago
ORD
Actual
Scheduled 21:25
Aug 29
Arrival
Louisville
SDF
Actual
Scheduled 03:59
Aug 30
Times shown in airport local time
Flight details
Departure · UTC
- Scheduled
- Estimated
- Actual
Arrival · UTC
- Scheduled
- Estimated
- Actual
ORDSDF
Recent arrivals
Dates below are arrival dates in the destination airport’s time zone. The detailed history uses service dates.
- 3 min early
ORD → SDF
- 5 min early
ORD → SDF
- 110 min late
ORD → SDF
- 11 min early
ORD → SDF
- 19 min early
ORD → SDF
Flight history and details
Aug 19, 2026 — Sep 18, 2026
- Observed arrivals
- 16
- Arrivals over 15 minutes late
- 2
- Observed cancellations
- 1
- Observed occurrences
- 23
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, 2026Arrived | Chicago | Louisville | -3 | |
| Sep 16, 2026Arrived | Chicago | Louisville | -5 | |
| Sep 15, 2026Arrived | Chicago | Louisville | 110 | |
| Sep 14, 2026Arrived | Chicago | Louisville | -11 | |
| Sep 13, 2026Arrived | Chicago | Louisville | -19 | |
| Sep 12, 2026Arrived | Chicago | Louisville | -3 | |
| Sep 11, 2026Arrived | Chicago | Louisville | -3 | |
| Sep 9, 2026Arrived | Chicago | Louisville | -3 | |
| Sep 8, 2026Arrived | Chicago | Louisville | -18 | |
| Sep 7, 2026Arrived | Chicago | Louisville | -21 | |
| Sep 6, 2026Arrived | Chicago | Louisville | 31 | |
| Sep 5, 2026Arrived | Chicago | Louisville | -26 | |
| Sep 2, 2026Arrived | Chicago | Louisville | -25 | |
| Aug 31, 2026Cancelled | Chicago | Louisville | Not available | Not available |
| Aug 29, 2026Arrived | Chicago | Louisville | -36 | |
| Aug 24, 2026Arrived | Chicago | Louisville | -30 | |
| Aug 23, 2026Arrived | Chicago | Louisville | -16 |