Flight OddsDL3817 SEA → BOI
Delta Air Lines · Seattle, WA to Boise, ID · 216 flights observed, 2025-07-06 to 2026-06-06 · 399 mi
DL3817 covers more than one route in the data window — the stats below are for SEA → BOI, the one it has flown most recently. The others are linked under “Other routes”.
On-time arrival
87%
Median delay
-12 min
90th percentile
+20 min
Cancellation rate
0%
How often is DL3817 on time?
Across 216 flights on SEA → BOI from 2025-07-06 to 2026-06-06, DL3817 arrived within 15 minutes of schedule 87% of the time. The median arrival delay was -12 min, and the worst 10% of flights arrived +20 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 | 187 | 87% |
| 16-30 min | 12 | 6% |
| 31-60 min | 6 | 3% |
| 61-120 min | 8 | 4% |
| 2+ hrs | 1 | 0% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2025-07 | 23 | 83% | -2 min |
| 2025-08 | 17 | 88% | 0 min |
| 2025-09 | 12 | 100% | -13 min |
| 2025-10 | 16 | 88% | -6 min |
| 2025-11 | 9 | 78% | -5 min |
| 2025-12 | 20 | 95% | -16 min |
| 2026-01 | 16 | 88% | -5 min |
| 2026-02 | 11 | 82% | +6 min |
| 2026-03 | 23 | 74% | +5 min |
| 2026-04 | 30 | 90% | -7 min |
| 2026-05 | 31 | 90% | -4 min |
| 2026-06 | 6 | 100% | -8 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 38 | 92% |
| Tue | 24 | 83% |
| Wed | 22 | 91% |
| Thu | 34 | 82% |
| Fri | 36 | 86% |
| Sat | 20 | 90% |
| Sun | 40 | 88% |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…