Flight OddsDL831 AUS → SEA
Delta Air Lines · Austin, TX to Seattle, WA · 177 flights observed, 2025-07-06 to 2026-06-30 · 1,770 mi
DL831 covers more than one route in the data window — the stats below are for AUS → SEA, the one it has flown most recently. The others are linked under “Other routes”.
On-time arrival
77%
Median delay
-6 min
90th percentile
+42 min
Cancellation rate
2%
How often is DL831 on time?
Across 177 flights on AUS → SEA from 2025-07-06 to 2026-06-30, DL831 arrived within 15 minutes of schedule 77% of the time. The median arrival delay was -6 min, and the worst 10% of flights arrived +42 min or later. 2% of flights were cancelled.
Delay distribution
Arrival delay for completed flights (excludes cancellations and diversions).
| Arrival | Flights | Share |
|---|---|---|
| Early / on-time | 133 | 77% |
| 16-30 min | 14 | 8% |
| 31-60 min | 12 | 7% |
| 61-120 min | 8 | 5% |
| 2+ hrs | 6 | 3% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2025-07 | 4 | 50% | +4 min |
| 2025-08 | 4 | 75% | +26 min |
| 2025-09 | 1 | 0% | +25 min |
| 2026-01 | 25 | 84% | +15 min |
| 2026-02 | 28 | 79% | +2 min |
| 2026-03 | 27 | 81% | +36 min |
| 2026-04 | 25 | 88% | -5 min |
| 2026-05 | 30 | 63% | +10 min |
| 2026-06 | 29 | 76% | +11 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 26 | 81% |
| Tue | 26 | 88% |
| Wed | 25 | 80% |
| Thu | 25 | 52% |
| Fri | 25 | 84% |
| Sat | 15 | 87% |
| Sun | 31 | 71% |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…