Flight OddsAS348 SEA → IAD
Alaska Airlines · Seattle, WA to Washington, DC · 163 flights observed, 2025-07-01 to 2026-06-09 · 2,305 mi
AS348 covers more than one route in the data window — the stats below are for SEA → IAD, the one it has flown most recently. The others are linked under “Other routes”.
On-time arrival
78%
Median delay
-4 min
90th percentile
+34 min
Cancellation rate
1%
How often is AS348 on time?
Across 163 flights on SEA → IAD from 2025-07-01 to 2026-06-09, AS348 arrived within 15 minutes of schedule 78% of the time. The median arrival delay was -4 min, and the worst 10% of flights arrived +34 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 | 126 | 78% |
| 16-30 min | 16 | 10% |
| 31-60 min | 16 | 10% |
| 61-120 min | 4 | 2% |
| 2+ hrs | 0 | 0% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2025-07 | 31 | 65% | +12 min |
| 2025-08 | 31 | 65% | +11 min |
| 2025-09 | 30 | 87% | -1 min |
| 2025-10 | 22 | 86% | -11 min |
| 2026-04 | 9 | 89% | -21 min |
| 2026-05 | 30 | 83% | -11 min |
| 2026-06 | 9 | 89% | +1 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 23 | 78% |
| Tue | 23 | 87% |
| Wed | 24 | 88% |
| Thu | 23 | 74% |
| Fri | 23 | 70% |
| Sat | 23 | 74% |
| Sun | 23 | 74% |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…