Is UA2661 delayed?
Each route and date is shown separately. Confirm that both airports match your booking.
Service date: · Scheduled departure date (America/Los_Angeles)
13 min late
This update may be out of date. Check with your airline.
Update time unavailable
Departure
San Francisco
SFO
Actual
Aug 30
Arrival
Ontario
ONT
Estimated
Aug 30
Times shown in airport local time
Flight details
Departure · UTC
- Scheduled
- Estimated
- Actual
Arrival · UTC
- Scheduled
- Estimated
- Actual
- Not available
Service date: · Scheduled departure date (America/New_York)
18 min early
Updated
Departure
Philadelphia
PHL
Actual
Aug 30
Arrival
San Francisco
SFO
Actual
Aug 30
Times shown in airport local time
Flight details
Departure · UTC
- Scheduled
- Estimated
- Actual
Arrival · UTC
- Scheduled
- Estimated
- Actual
Recent arrivals
Dates below are arrival dates in the destination airport’s time zone. The detailed history uses service dates.
- 10 min late
SFO → ONT
- 36 min late
SFO → ONT
- 29 min early
PHL → SFO
- 16 min early
SFO → ONT
- 17 min early
PHL → SFO
Flight history and details
Aug 20, 2026 — Sep 19, 2026
- Observed arrivals
- 29
- Arrivals over 15 minutes late
- 5
- Observed cancellations
- 0
- Observed occurrences
- 45
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 19, 2026Arrived | San Francisco | Ontario | 10 | |
| Sep 18, 2026Arrived | San Francisco | Ontario | 36 | |
| Sep 18, 2026Arrived | Philadelphia | San Francisco | -29 | |
| Sep 17, 2026Arrived | San Francisco | Ontario | -16 | |
| Sep 17, 2026Arrived | Philadelphia | San Francisco | -17 | |
| Sep 16, 2026Arrived | San Francisco | Ontario | -9 | |
| Sep 14, 2026Arrived | San Francisco | Ontario | 29 | |
| Sep 13, 2026Arrived | San Francisco | Ontario | -5 | |
| Sep 12, 2026Arrived | San Francisco | Ontario | 1 | |
| Sep 11, 2026Arrived | Philadelphia | San Francisco | -8 | |
| Sep 10, 2026Arrived | San Francisco | Ontario | 10 | |
| Sep 10, 2026Arrived | Philadelphia | San Francisco | -16 | |
| Sep 9, 2026Arrived | San Francisco | Ontario | 17 | |
| Sep 8, 2026Arrived | San Francisco | Ontario | -13 | |
| Sep 7, 2026Arrived | San Francisco | Ontario | 0 | |
| Sep 7, 2026Arrived | Philadelphia | San Francisco | -22 | |
| Sep 6, 2026Arrived | San Francisco | Ontario | 2 | |
| Sep 5, 2026Arrived | San Francisco | Ontario | -12 | |
| Sep 4, 2026Arrived | San Francisco | Ontario | -15 | |
| Sep 4, 2026Arrived | Philadelphia | San Francisco | 0 | |
| Sep 3, 2026Arrived | Philadelphia | San Francisco | 31 | |
| Sep 2, 2026Arrived | Philadelphia | San Francisco | -21 | |
| Aug 31, 2026Arrived | Philadelphia | San Francisco | -20 | |
| Aug 30, 2026Arrived | Philadelphia | San Francisco | -18 | |
| Aug 28, 2026Arrived | Philadelphia | San Francisco | -23 | |
| Aug 27, 2026Arrived | Philadelphia | San Francisco | -4 | |
| Aug 26, 2026Arrived | Philadelphia | San Francisco | -2 | |
| Aug 24, 2026Arrived | Philadelphia | San Francisco | -21 | |
| Aug 23, 2026Arrived | Philadelphia | San Francisco | 34 |