United Airlines
Is UA3878 delayed?
Yes — UA3878 landed in San Antonio 65 min late, at 20:28 on Sep 29 (as of Sep 30, 01:28 UTC).
65 min late
Official source · Updated
Departure
Newark
EWR
Scheduled
Sep 29
Arrival
San Antonio
SAT
Actual
Scheduled 19:23
Sep 29
Times shown in airport local time
Service date: · Scheduled departure date (America/New_York)
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.
- 65 min late
Newark → San Antonio
- 21 min early
Houston → Lake City
Is UA3878 usually late?
Observation window: Sep 2, 2026 – Oct 2, 2026
Percentages and delay figures appear once 10 arrivals are recorded.
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
Newark (EWR) departures
- Left more than 15 min late
- 13 of 90
- Cancelled today
- 4
Related flights
Flight history and details
| Service date | Departure | Arrival | Actual | Arrival delay (minutes) |
|---|---|---|---|---|
| Sep 29, 2026Arrived | Newark | San Antonio | 65 | |
| Sep 25, 2026Cancelled | Denver | Las Vegas | Not available | Not available |
| Sep 21, 2026Cancelled | Lake City | Orlando | Not available | Not available |
| Sep 18, 2026Cancelled | Wichita | Houston | Not available | Not available |
| Sep 14, 2026Arrived | Houston | Lake City | -21 | |
| Sep 7, 2026Cancelled | Chicago | Lake City | Not available | Not available |
| Sep 4, 2026Cancelled | Dulles | Chicago | Not available | Not available |
Email me if UA3878 runs late
We email you if your next UA3878 flight in the coming day is more than 15 minutes late, cancelled or diverted. Alerts last 30 days. No account needed.