About 1 in 3 DL 4133 flights from Aspen arrived 15+ minutes late, diverted or cancelled over the past year (29%); 3.6% were cancelled. The typical flight landed 10 minutes early.
DL 4133: ASE → LAX
Scheduled to leave Aspen at 12:03 p.m. local time, operated by SkyWest as OO 4133. Over the past year it arrived on time 71% of the time (336 flights), in line with other DL flights on the route at that hour (71%). Last seen in the data Aug 31, 2026.
Month by month
By day of week
| Day | Flights | On time |
|---|---|---|
| Monday | 49 | 65% |
| Tuesday | 48 | 71% |
| Wednesday | 48 | 81% |
| Thursday | 47 | 79% |
| Friday | 48 | 69% |
| Saturday | 48 | 71% |
| Sunday | 48 | 63% |
Why it was late
All flights ASE → LAX · Connecting off DL 4133? Check the risk
Questions
How often is DL 4133 from ASE to LAX late?
Delta Air Lines 4133 from Aspen, CO to Los Angeles, CA arrived 15 or more minutes late, was diverted or was cancelled on 29% of 336 scheduled flights between September 2025 and August 2026. 3.6% 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.