Is AC4988 delayed?
Service date: · Scheduled departure date (America/Los_Angeles)
Arrived
34 min early
Official source · Updated
Departure
San Francisco
SFO
Actual
Scheduled 00:35
Sep 6
Arrival
Chicago
ORD
Actual
Scheduled 06:56
Sep 6
Times shown in airport local time
Flight details
Departure · UTC
- Scheduled
- Estimated
- Not available
- Actual
Arrival · UTC
- Scheduled
- Estimated
- Actual
Operating flight: UAL2847
Recent arrivals
Dates below are arrival dates in the destination airport’s time zone. The detailed history uses service dates.
- 27 min late
SFO → ORD
- 56 min early
SFO → ORD
- 40 min early
SFO → ORD
- 31 min early
SFO → ORD
- 37 min early
SFO → ORD
Flight history and details
Aug 18, 2026 — Sep 17, 2026
- Observed arrivals
- 14
- Arrivals over 15 minutes late
- 1
- Observed cancellations
- 0
- Observed occurrences
- 14
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 | San Francisco | Chicago | 27 | |
| Sep 16, 2026Arrived | San Francisco | Chicago | -56 | |
| Sep 15, 2026Arrived | San Francisco | Chicago | -40 | |
| Sep 14, 2026Arrived | San Francisco | Chicago | -31 | |
| Sep 13, 2026Arrived | San Francisco | Chicago | -37 | |
| Sep 12, 2026Arrived | San Francisco | Chicago | -45 | |
| Sep 11, 2026Arrived | San Francisco | Chicago | -29 | |
| Sep 10, 2026Arrived | San Francisco | Chicago | -46 | |
| Sep 9, 2026Arrived | San Francisco | Chicago | -20 | |
| Sep 8, 2026Arrived | San Francisco | Chicago | -31 | |
| Sep 7, 2026Arrived | San Francisco | Chicago | -35 | |
| Sep 6, 2026Arrived | San Francisco | Chicago | -34 | |
| Sep 4, 2026Arrived | San Francisco | Chicago | -40 | |
| Sep 3, 2026Arrived | San Francisco | Chicago | -26 |