About 1 in 10 DL 439 flights from Dallas arrived 15+ minutes late, diverted or cancelled over the past year (10%); 2.7% were cancelled. The typical flight landed 8 minutes early.
DL 439: DFW → LAX
Scheduled to leave Dallas at 6:15 a.m. local time. Over the past year it arrived on time 90% of the time (365 flights), in line with other DL flights on the route at that hour (90%). Last seen in the data Aug 31, 2026.
Month by month
By day of week
| Day | Flights | On time |
|---|---|---|
| Monday | 53 | 89% |
| Tuesday | 52 | 92% |
| Wednesday | 52 | 90% |
| Thursday | 52 | 96% |
| Friday | 52 | 87% |
| Saturday | 52 | 83% |
| Sunday | 52 | 90% |
Why it was late
All flights DFW → LAX · Connecting off DL 439? Check the risk
Questions
How often is DL 439 from DFW to LAX late?
Delta Air Lines 439 from Dallas/Fort Worth, TX to Los Angeles, CA arrived 15 or more minutes late, was diverted or was cancelled on 10% of 365 scheduled flights between September 2025 and August 2026. 2.7% 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.