Flight Reliability
DL 747 · Delta Air Lines
New York → Los Angeles (JFK–LAX)97% of its flights flew this route. The rest (BOS–LGA) are included in these numbers.
87
Pretty Reliable
WanderNerd Reliability Score
- 83%
- Arrive within 15 minutes
- 1 min early
- Average arrival delay
- 1.1%
- Cancelled
- 12 min early
- Median arrival delay
Based on 357 historical flights. Data through May 2026.
What the data says
Saturdays have been rough.
DL 747 arrived on time 90% of the time on Wednesdays and just 71% on Saturdays. That gap is worth planning around.
A bit ahead of the JFK–LAX route.
DL 747 arrived on time 83% of the time, versus 79% across the JFK–LAX route.
The breakdown
- Mon88%(51 flights)
- Tue86%(49 flights)
- Wed90%(49 flights)
- Thu86%(51 flights)
- Fri83%(52 flights)
- Sat71%(52 flights)
- Sun78%(49 flights)
- 12–3 PM83%(344 flights)
- 3–6 PM—(1 flights)
- 6–9 PM—(8 flights)
92%
May
Jun 87% → May 92% on time
| Month | On-time percentage | Flights |
|---|---|---|
| June 2025 | 87% | 30 |
| July 2025 | 77% | 31 |
| August 2025 | 94% | 31 |
| September 2025 | 73% | 30 |
| October 2025 | 77% | 31 |
| November 2025 | 83% | 29 |
| December 2025 | 86% | 29 |
| January 2026 | 93% | 30 |
| February 2026 | 77% | 26 |
| March 2026 | 90% | 31 |
| April 2026 | 67% | 30 |
| May 2026 | 92% | 25 |
- Departures on time
- 87%
- Diverted
- 0%
- Flights flown
- 353
- Months covered
- 12
Same route, other flights
Keep nerding
Based on 357 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.