Is UA1257 delayed?
Each route and date is shown separately. Confirm that both airports match your booking.
Service date: · Scheduled departure date (America/Los_Angeles)
Arrived
10 min early
Official source · Updated
Departure
San Francisco
SFO
Actual
Scheduled 12:22
Sep 8
Arrival
San Diego
SAN
Actual
Scheduled 13:41
Sep 8
Times shown in airport local time
Flight details
Departure · UTC
- Scheduled
- Estimated
- Not available
- Actual
Arrival · UTC
- Scheduled
- Estimated
- Not available
- Actual
Service date: · Scheduled departure date (UTC)
Arrived
31 min late
Official source · Updated
Departure
Portland
PDX
Actual
Scheduled 16:11
Sep 8
Arrival
San Francisco
SFO
Actual
Scheduled 10:47
Sep 8
Times shown in airport local time
Flight details
Departure · UTC
- Scheduled
- Estimated
- Not available
- Actual
Arrival · UTC
- Scheduled
- Estimated
- Actual
PDXSFO
Recent arrivals
Dates below are arrival dates in the destination airport’s time zone. The detailed history uses service dates.
- 47 min late
PDX → SFO
- 69 min late
SFO → SAN
- 38 min late
PDX → SFO
- 51 min late
PDX → SFO
- 158 min late
PDX → SFO
Flight history and details
Aug 22, 2026 — Sep 21, 2026
- Observed arrivals
- 27
- Arrivals over 15 minutes late
- 16
- Observed cancellations
- 0
- Observed occurrences
- 44
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 20, 2026Arrived | Portland | San Francisco | 47 | |
| Sep 19, 2026Arrived | San Francisco | San Diego | 69 | |
| Sep 19, 2026Arrived | Portland | San Francisco | 38 | |
| Sep 18, 2026Arrived | Portland | San Francisco | 51 | |
| Sep 17, 2026Arrived | Portland | San Francisco | 158 | |
| Sep 16, 2026Arrived | Portland | San Francisco | 52 | |
| Sep 15, 2026Arrived | San Francisco | San Diego | -5 | |
| Sep 15, 2026Arrived | Portland | San Francisco | 0 | |
| Sep 14, 2026Arrived | San Francisco | San Diego | 11 | |
| Sep 14, 2026Arrived | Portland | San Francisco | 17 | |
| Sep 13, 2026Arrived | San Francisco | San Diego | -14 | |
| Sep 13, 2026Arrived | Portland | San Francisco | -14 | |
| Sep 12, 2026Arrived | Portland | San Francisco | 13 | |
| Sep 11, 2026Arrived | Portland | San Francisco | 123 | |
| Sep 10, 2026Arrived | San Francisco | San Diego | 53 | |
| Sep 10, 2026Arrived | Portland | San Francisco | 8 | |
| Sep 9, 2026Arrived | San Francisco | San Diego | -6 | |
| Sep 9, 2026Arrived | Portland | San Francisco | 20 | |
| Sep 8, 2026Arrived | San Francisco | San Diego | -10 | |
| Sep 8, 2026Arrived | Portland | San Francisco | 31 | |
| Sep 7, 2026Arrived | St Louis | San Francisco | 31 | |
| Sep 6, 2026Arrived | San Francisco | San Diego | -11 | |
| Sep 6, 2026Arrived | St Louis | San Francisco | 21 | |
| Sep 5, 2026Arrived | San Francisco | San Diego | 351 | |
| Sep 4, 2026Arrived | San Francisco | San Diego | 68 | |
| Sep 4, 2026Arrived | St Louis | San Francisco | -3 | |
| Aug 27, 2026Arrived | San Francisco | San Diego | 64 |