Delta Air Lines · Twin Falls, ID to Salt Lake City, UT · 74 flights observed, 2025-12-20 to 2026-03-07 · 175 mi
DL3870 covers more than one route in the data window — the stats below are for TWF → SLC, the one it has flown most recently. The others are linked under “Other routes”.
How often is DL3870 on time?
Across 74 flights on TWF → SLC from 2025-12-20 to 2026-03-07, DL3870 arrived within 15 minutes of schedule 97% of the time. The median arrival delay was -15 min, and the worst 10% of flights arrived -6 min or later. 3% of flights were cancelled.
Delay distribution
Arrival delay for completed flights (excludes cancellations and diversions).
| Arrival | Flights | Share |
|---|---|---|
| Early / on-time | 70 | 97% |
| 16-30 min | 1 | 1% |
| 31-60 min | 0 | 0% |
| 61-120 min | 1 | 1% |
| 2+ hrs | 0 | 0% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2025-12 | 9 | 100% | -18 min |
| 2026-01 | 29 | 97% | -11 min |
| 2026-02 | 27 | 96% | -10 min |
| 2026-03 | 7 | 100% | -17 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 11 | 100% |
| Tue | 11 | 100% |
| Wed | 8 | 100% |
| Thu | 9 | 100% |
| Fri | 11 | 91% |
| Sat | 12 | 100% |
| Sun | 10 | 90% |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…