Flight OddsDelta Air Lines · Great Falls, MT to Salt Lake City, UT · 364 flights observed, 2025-07-01 to 2026-06-30 · 463 mi
DL3859 covers more than one route in the data window — the stats below are for GTF → SLC, the one it has flown most recently. The others are linked under “Other routes”.
How often is DL3859 on time?
Across 364 flights on GTF → SLC from 2025-07-01 to 2026-06-30, DL3859 arrived within 15 minutes of schedule 93% of the time. The median arrival delay was -14 min, and the worst 10% of flights arrived +3 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 | 335 | 93% |
| 16-30 min | 8 | 2% |
| 31-60 min | 9 | 3% |
| 61-120 min | 4 | 1% |
| 2+ hrs | 3 | 1% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2025-07 | 31 | 94% | -1 min |
| 2025-08 | 31 | 94% | -7 min |
| 2025-09 | 30 | 97% | -12 min |
| 2025-10 | 31 | 97% | -11 min |
| 2025-11 | 25 | 92% | -10 min |
| 2025-12 | 31 | 90% | -12 min |
| 2026-01 | 31 | 90% | -11 min |
| 2026-02 | 28 | 86% | -1 min |
| 2026-03 | 30 | 90% | -13 min |
| 2026-04 | 30 | 97% | -14 min |
| 2026-05 | 31 | 97% | -11 min |
| 2026-06 | 30 | 97% | -14 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 52 | 88% |
| Tue | 53 | 98% |
| Wed | 51 | 94% |
| Thu | 50 | 92% |
| Fri | 51 | 94% |
| Sat | 50 | 90% |
| Sun | 52 | 96% |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…