Flight OddsAS639 SEA → TPA
Alaska Airlines · Seattle, WA to Tampa, FL · 173 flights observed, 2025-11-21 to 2026-06-30 · 2,520 mi
AS639 covers more than one route in the data window — the stats below are for SEA → TPA, the one it has flown most recently. The others are linked under “Other routes”.
On-time arrival
85%
Median delay
-7 min
90th percentile
+23 min
Cancellation rate
0%
How often is AS639 on time?
Across 173 flights on SEA → TPA from 2025-11-21 to 2026-06-30, AS639 arrived within 15 minutes of schedule 85% of the time. The median arrival delay was -7 min, and the worst 10% of flights arrived +23 min or later. 0% of flights were cancelled.
Delay distribution
Arrival delay for completed flights (excludes cancellations and diversions).
| Arrival | Flights | Share |
|---|---|---|
| Early / on-time | 147 | 85% |
| 16-30 min | 15 | 9% |
| 31-60 min | 6 | 3% |
| 61-120 min | 4 | 2% |
| 2+ hrs | 1 | 1% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2025-11 | 9 | 67% | +3 min |
| 2025-12 | 25 | 88% | -7 min |
| 2026-01 | 6 | 83% | -6 min |
| 2026-02 | 17 | 94% | -16 min |
| 2026-03 | 29 | 90% | -2 min |
| 2026-04 | 27 | 89% | -2 min |
| 2026-05 | 30 | 73% | +13 min |
| 2026-06 | 30 | 87% | -8 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 27 | 85% |
| Tue | 23 | 91% |
| Wed | 22 | 86% |
| Thu | 25 | 88% |
| Fri | 27 | 78% |
| Sat | 22 | 82% |
| Sun | 27 | 85% |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…