Flight OddsDelta Air Lines · Salt Lake City, UT to Billings, MT · 193 flights observed, 2025-12-20 to 2026-06-30 · 387 mi
DL4038 covers more than one route in the data window — the stats below are for SLC → BIL, the one it has flown most recently. The others are linked under “Other routes”.
How often is DL4038 on time?
Across 193 flights on SLC → BIL from 2025-12-20 to 2026-06-30, DL4038 arrived within 15 minutes of schedule 95% of the time. The median arrival delay was -11 min, and the worst 10% of flights arrived +5 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 | 183 | 95% |
| 16-30 min | 5 | 3% |
| 31-60 min | 4 | 2% |
| 61-120 min | 0 | 0% |
| 2+ hrs | 0 | 0% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2025-12 | 12 | 92% | -20 min |
| 2026-01 | 31 | 94% | -8 min |
| 2026-02 | 28 | 93% | -8 min |
| 2026-03 | 30 | 97% | -10 min |
| 2026-04 | 30 | 100% | -10 min |
| 2026-05 | 31 | 97% | -8 min |
| 2026-06 | 30 | 93% | -7 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 28 | 96% |
| Tue | 28 | 89% |
| Wed | 27 | 100% |
| Thu | 27 | 96% |
| Fri | 27 | 93% |
| Sat | 27 | 96% |
| Sun | 28 | 96% |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…