Flight OddsAlaska Airlines · San Francisco, CA to Washington, DC · 50 flights observed, 2025-07-01 to 2025-08-19 · 2,418 mi
AS434 covers more than one route in the data window — the stats below are for SFO → IAD, the one it has flown most recently. The others are linked under “Other routes”.
How often is AS434 on time?
Across 50 flights on SFO → IAD from 2025-07-01 to 2025-08-19, AS434 arrived within 15 minutes of schedule 38% of the time. The median arrival delay was +30 min, and the worst 10% of flights arrived +115 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 | 19 | 38% |
| 16-30 min | 6 | 12% |
| 31-60 min | 10 | 20% |
| 61-120 min | 10 | 20% |
| 2+ hrs | 5 | 10% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2025-07 | 31 | 29% | +54 min |
| 2025-08 | 19 | 53% | +24 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 7 | 43% |
| Tue | 8 | 38% |
| Wed | 7 | 43% |
| Thu | 7 | 43% |
| Fri | 7 | 57% |
| Sat | 7 | 14% |
| Sun | 7 | 29% |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…