Flight OddsDL3839 SLC → HLN
Delta Air Lines · Salt Lake City, UT to Helena, MT · 193 flights observed, 2025-12-20 to 2026-06-30 · 402 mi
DL3839 covers more than one route in the data window — the stats below are for SLC → HLN, the one it has flown most recently. The others are linked under “Other routes”.
On-time arrival
96%
Median delay
-15 min
90th percentile
-4 min
Cancellation rate
0%
How often is DL3839 on time?
Across 193 flights on SLC → HLN from 2025-12-20 to 2026-06-30, DL3839 arrived within 15 minutes of schedule 96% of the time. The median arrival delay was -15 min, and the worst 10% of flights arrived -4 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 | 185 | 96% |
| 16-30 min | 5 | 3% |
| 31-60 min | 3 | 2% |
| 61-120 min | 0 | 0% |
| 2+ hrs | 0 | 0% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2025-12 | 12 | 100% | -16 min |
| 2026-01 | 31 | 90% | -9 min |
| 2026-02 | 28 | 96% | -18 min |
| 2026-03 | 31 | 97% | -13 min |
| 2026-04 | 30 | 97% | -14 min |
| 2026-05 | 31 | 97% | -14 min |
| 2026-06 | 30 | 97% | -12 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 28 | 100% |
| Tue | 28 | 100% |
| Wed | 27 | 96% |
| Thu | 27 | 85% |
| Fri | 27 | 96% |
| Sat | 28 | 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…