Flight OddsDL1731 DEN → SEA
Delta Air Lines · Denver, CO to Seattle, WA · 364 flights observed, 2025-07-01 to 2026-06-30 · 1,024 mi
On-time arrival
91%
Median delay
-11 min
90th percentile
+15 min
Cancellation rate
1%
How often is DL1731 on time?
Across 364 flights on DEN → SEA from 2025-07-01 to 2026-06-30, DL1731 arrived within 15 minutes of schedule 91% of the time. The median arrival delay was -11 min, and the worst 10% of flights arrived +15 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 | 326 | 91% |
| 16-30 min | 20 | 6% |
| 31-60 min | 3 | 1% |
| 61-120 min | 2 | 1% |
| 2+ hrs | 9 | 3% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2025-07 | 31 | 87% | +15 min |
| 2025-08 | 31 | 94% | -2 min |
| 2025-09 | 30 | 100% | -18 min |
| 2025-10 | 30 | 87% | -4 min |
| 2025-11 | 30 | 83% | +10 min |
| 2025-12 | 29 | 62% | +37 min |
| 2026-01 | 31 | 94% | -7 min |
| 2026-02 | 28 | 93% | -10 min |
| 2026-03 | 30 | 90% | -6 min |
| 2026-04 | 30 | 100% | -17 min |
| 2026-05 | 31 | 97% | -2 min |
| 2026-06 | 29 | 100% | -11 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 51 | 90% |
| Tue | 52 | 100% |
| Wed | 52 | 90% |
| Thu | 52 | 85% |
| Fri | 51 | 96% |
| Sat | 50 | 92% |
| Sun | 52 | 81% |
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…