Flight OddsUA5579 SFO → SEA
United Airlines · San Francisco, CA to Seattle, WA · 113 flights observed, 2026-01-06 to 2026-06-29 · 679 mi
UA5579 covers more than one route in the data window — the stats below are for SFO → SEA, the one it has flown most recently. The others are linked under “Other routes”.
On-time arrival
73%
Median delay
-8 min
90th percentile
+55 min
Cancellation rate
1%
How often is UA5579 on time?
Across 113 flights on SFO → SEA from 2026-01-06 to 2026-06-29, UA5579 arrived within 15 minutes of schedule 73% of the time. The median arrival delay was -8 min, and the worst 10% of flights arrived +55 min or later. 1% of flights were cancelled.
Delay distribution
Arrival delay for completed flights (excludes cancellations and diversions).
| Arrival | Flights | Share |
|---|---|---|
| Early / on-time | 82 | 73% |
| 16-30 min | 7 | 6% |
| 31-60 min | 15 | 13% |
| 61-120 min | 5 | 4% |
| 2+ hrs | 3 | 3% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2026-01 | 17 | 94% | -12 min |
| 2026-02 | 24 | 88% | -2 min |
| 2026-03 | 28 | 89% | -6 min |
| 2026-04 | 1 | 100% | -38 min |
| 2026-05 | 26 | 46% | +19 min |
| 2026-06 | 16 | 44% | +23 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 16 | 38% |
| Tue | 15 | 100% |
| Wed | 13 | 92% |
| Thu | 21 | 62% |
| Fri | 21 | 71% |
| Sat | 10 | 90% |
| Sun | 16 | 75% |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…