About 1 in 6 DL 4087 flights from San Diego arrived 15+ minutes late, diverted or cancelled over the past year (16%); 0.9% were cancelled. The typical flight landed 13 minutes early.
DL 4087: SAN → LAX
Scheduled to leave San Diego at 7:59 p.m. local time, operated by SkyWest as OO 4087. Over the past year it arrived on time 84% of the time (320 flights), in line with other DL flights on the route at that hour (82%). Last seen in the data Aug 30, 2026.
Usually Delta Air Lines's last flight of the day from San Diego to Los Angeles (100% of days). Delta Air Lines's last SAN–LAX flight was cancelled 0.8% of the time, against 0.7% for its earlier ones. If it's cancelled, the next Delta Air Lines flight is usually around 6:15 a.m. the next morning.
Month by month
By day of week
| Day | Flights | On time |
|---|---|---|
| Monday | 49 | 80% |
| Tuesday | 49 | 94% |
| Wednesday | 49 | 92% |
| Thursday | 49 | 86% |
| Friday | 50 | 72% |
| Saturday | 29 | 90% |
| Sunday | 45 | 78% |
Why it was late
All flights SAN → LAX · Connecting off DL 4087? Check the risk
DL 4087: LAX → SAN
Scheduled to leave Los Angeles at 6:20 p.m. local time, operated by SkyWest as OO 4087. Over the past year it arrived on time 79% of the time (319 flights), in line with other DL flights on the route at that hour (79%). Last seen in the data Aug 30, 2026.
Month by month
By day of week
| Day | Flights | On time |
|---|---|---|
| Monday | 49 | 65% |
| Tuesday | 49 | 92% |
| Wednesday | 49 | 90% |
| Thursday | 49 | 78% |
| Friday | 49 | 71% |
| Saturday | 29 | 86% |
| Sunday | 45 | 73% |
Why it was late
All flights LAX → SAN · Connecting off DL 4087? Check the risk
Questions
How often is DL 4087 from SAN to LAX late?
Delta Air Lines 4087 from San Diego, CA to Los Angeles, CA arrived 15 or more minutes late, was diverted or was cancelled on 16% of 320 scheduled flights between September 2025 and August 2026. 0.9% were cancelled.
How often is DL 4087 from LAX to SAN late?
Delta Air Lines 4087 from Los Angeles, CA to San Diego, CA arrived 15 or more minutes late, was diverted or was cancelled on 21% of 319 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.