About 1 in 16 DL 3880 flights from Salt Lake City arrived 15+ minutes late, diverted or cancelled over the past year (6%); 0.6% were cancelled. The typical flight landed 11 minutes early.
DL 3880: SLC → HLN
Scheduled to leave Salt Lake City at 10:45 a.m. local time, operated by SkyWest as OO 3880. Over the past year it arrived on time 94% of the time (360 flights), in line with other DL flights on the route at that hour (94%). Last seen in the data Aug 31, 2026.
Month by month
By day of week
| Day | Flights | On time |
|---|---|---|
| Monday | 53 | 94% |
| Tuesday | 52 | 94% |
| Wednesday | 50 | 90% |
| Thursday | 49 | 96% |
| Friday | 52 | 94% |
| Saturday | 52 | 90% |
| Sunday | 52 | 96% |
Why it was late
All flights SLC → HLN · Connecting off DL 3880? Check the risk
DL 3880: HLN → SLC
Scheduled to leave Helena at 1:00 p.m. local time, operated by SkyWest as OO 3880. Over the past year it arrived on time 93% of the time (360 flights), in line with other DL flights on the route at that hour (94%). Last seen in the data Aug 31, 2026.
Usually Delta Air Lines's last flight of the day from Helena to Salt Lake City (100% of days). Delta Air Lines's last HLN–SLC flight was cancelled 0.6% of the time, against 0.0% for its earlier ones. If it's cancelled, the next Delta Air Lines flight is usually around 5:40 a.m. the next morning.
Month by month
By day of week
| Day | Flights | On time |
|---|---|---|
| Monday | 53 | 92% |
| Tuesday | 52 | 98% |
| Wednesday | 50 | 92% |
| Thursday | 49 | 96% |
| Friday | 52 | 85% |
| Saturday | 52 | 90% |
| Sunday | 52 | 94% |
Why it was late
All flights HLN → SLC · Connecting off DL 3880? Check the risk
Questions
How often is DL 3880 from SLC to HLN late?
Delta Air Lines 3880 from Salt Lake City, UT to Helena, MT arrived 15 or more minutes late, was diverted or was cancelled on 6% of 360 scheduled flights between September 2025 and August 2026. 0.6% were cancelled.
How often is DL 3880 from HLN to SLC late?
Delta Air Lines 3880 from Helena, MT to Salt Lake City, UT arrived 15 or more minutes late, was diverted or was cancelled on 7% of 360 scheduled flights between September 2025 and August 2026. 0.6% were cancelled.
Flight numbers change. Figures cover flights with this airline, number and route only. "Likely range" is the 95% interval for the true on-time rate given the number of flights. This is history, not live status: check Delta Air Lines for today's flight. Method.