About 1 in 8 DL 4148 flights from Los Angeles arrived 15+ minutes late, diverted or cancelled over the past year (13%); 0.0% were cancelled. The typical flight landed 14 minutes early.
DL 4148: LAX → BOI
Scheduled to leave Los Angeles at 7:59 p.m. local time, operated by SkyWest as OO 4148. Over the past year it arrived on time 87% of the time (255 flights), in line with other DL flights on the route at that hour (90%). Last seen in the data Aug 31, 2026.
Usually Delta Air Lines's last flight of the day from Los Angeles to Boise (60% of days). Delta Air Lines's last LAX–BOI flight was cancelled 0.0% of the time, against 0.4% for its earlier ones. If it's cancelled, the next Delta Air Lines flight is usually around 11:44 a.m. the next morning.
Month by month
By day of week
| Day | Flights | On time |
|---|---|---|
| Monday | 37 | 81% |
| Tuesday | 36 | 97% |
| Wednesday | 36 | 86% |
| Thursday | 36 | 92% |
| Friday | 36 | 81% |
| Saturday | 37 | 84% |
| Sunday | 37 | 92% |
Why it was late
All flights LAX → BOI · Connecting off DL 4148? Check the risk
Questions
How often is DL 4148 from LAX to BOI late?
Delta Air Lines 4148 from Los Angeles, CA to Boise, ID arrived 15 or more minutes late, was diverted or was cancelled on 13% of 255 scheduled flights between September 2025 and August 2026. 0.0% 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.