Flight Reliability
DL 450 · Delta Air Lines
Miami → Los Angeles (MIA–LAX)
89
Pretty Reliable
WanderNerd Reliability Score
- 85%
- Arrive within 15 minutes
- 5 min
- Average arrival delay
- 0.5%
- Cancelled
- 9 min early
- Median arrival delay
Based on 365 historical flights. Data through May 2026.
What the data says
Sunday scaries are real for this one.
DL 450 arrived on time 92% of the time on Thursdays. On Sundays: 77%.
Better than the MIA–LAX route average.
DL 450 arrived on time 85% of the time, versus 76% across the MIA–LAX route.
A bit ahead of the Delta Air Lines network.
DL 450 arrived on time 85% of the time, versus 81% across the Delta Air Lines network.
Ticking up lately.
DL 450 arrived on time 87% of the time over the last three months in the data, compared with 83% in the three months before that.
The breakdown
- Mon88%(51 flights)
- Tue79%(52 flights)
- Wed86%(51 flights)
- Thu92%(52 flights)
- Fri81%(52 flights)
- Sat92%(50 flights)
- Sun77%(53 flights)
90%
May
Jun 79% → May 90% on time
| Month | On-time percentage | Flights |
|---|---|---|
| June 2025 | 79% | 29 |
| July 2025 | 81% | 31 |
| August 2025 | 94% | 31 |
| September 2025 | 87% | 30 |
| October 2025 | 81% | 31 |
| November 2025 | 90% | 29 |
| December 2025 | 87% | 30 |
| January 2026 | 84% | 31 |
| February 2026 | 79% | 28 |
| March 2026 | 84% | 31 |
| April 2026 | 87% | 30 |
| May 2026 | 90% | 30 |
- Departures on time
- 84%
- Diverted
- 0.5%
- Flights flown
- 361
- Months covered
- 12
Same route, other flights
Keep nerding
Based on 365 historical flights, because apparently we checked. Historical flight data: U.S. Bureau of Transportation Statistics, June 2025 – May 2026. Data through May 2026. How we calculate this.