Is AS521 delayed?
Service date: · Scheduled departure date (America/Los_Angeles)
Arrived
43 min late
Official source · Updated
Departure
Seattle
SEA
Actual
Scheduled 17:00
Sep 7
Arrival
San Jose
SJC
Actual
Scheduled 01:32
Sep 8
Times shown in airport local time
Flight details
Departure · UTC
- Scheduled
- Estimated
- Not available
- Actual
Arrival · UTC
- Scheduled
- Estimated
- Not available
- Actual
SEASJC
Recent arrivals
Dates below are arrival dates in the destination airport’s time zone. The detailed history uses service dates.
- 3 min late
SEA → SJC
- 16 min late
SEA → SJC
- 18 min late
SEA → SJC
- 20 min late
SEA → SJC
- 7 min early
SEA → SJC
Flight history and details
Aug 19, 2026 — Sep 18, 2026
- Observed arrivals
- 27
- Arrivals over 15 minutes late
- 10
- Observed cancellations
- 0
- Observed occurrences
- 29
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 | Seattle | San Jose | 3 | |
| Sep 16, 2026Arrived | Seattle | San Jose | 16 | |
| Sep 15, 2026Arrived | Seattle | San Jose | 18 | |
| Sep 14, 2026Arrived | Seattle | San Jose | 20 | |
| Sep 13, 2026Arrived | Seattle | San Jose | -7 | |
| Sep 12, 2026Arrived | Seattle | San Jose | 15 | |
| Sep 11, 2026Arrived | Seattle | San Jose | 3 | |
| Sep 10, 2026Arrived | Seattle | San Jose | 5 | |
| Sep 9, 2026Arrived | Seattle | San Jose | -3 | |
| Sep 8, 2026Arrived | Seattle | San Jose | 21 | |
| Sep 7, 2026Arrived | Seattle | San Jose | 43 | |
| Sep 6, 2026Arrived | Seattle | San Jose | 11 | |
| Sep 4, 2026Arrived | Seattle | San Jose | 8 | |
| Sep 3, 2026Arrived | Seattle | San Jose | -8 | |
| Sep 1, 2026Arrived | Seattle | San Jose | 1 | |
| Aug 31, 2026Arrived | Seattle | San Jose | 9 | |
| Aug 30, 2026Arrived | Seattle | San Jose | -1 | |
| Aug 29, 2026Arrived | Seattle | San Jose | -25 | |
| Aug 28, 2026Arrived | Seattle | San Jose | 24 | |
| Aug 27, 2026Arrived | Seattle | San Jose | -11 | |
| Aug 26, 2026Arrived | Seattle | San Jose | 1 | |
| Aug 25, 2026Arrived | Seattle | San Jose | 3 | |
| Aug 24, 2026Arrived | Seattle | San Jose | 3 | |
| Aug 23, 2026Arrived | Seattle | San Jose | 46 | |
| Aug 22, 2026Arrived | Seattle | San Jose | -8 | |
| Aug 21, 2026Arrived | Seattle | San Jose | 20 | |
| Aug 19, 2026Arrived | Seattle | San Jose | 51 |