Flight Reliability
DL 742 · Delta Air Lines
New York → Los Angeles (JFK–LAX)99% of its flights flew this route. The rest (JFK–DTW) are included in these numbers.
81
Pretty Reliable
WanderNerd Reliability Score
- 80%
- Arrive within 15 minutes
- 4 min
- Average arrival delay
- 1.7%
- Cancelled
- 6 min early
- Median arrival delay
Based on 343 historical flights. Data through May 2026.
What the data says
Sunday scaries are real for this one.
DL 742 arrived on time 86% of the time on Tuesdays and just 71% on Sundays. That gap is worth planning around.
Trending in the right direction.
DL 742 arrived on time 83% of the time over the last three months in the data, compared with 71% in the three months before that.
The breakdown
- Mon81%(48 flights)
- Tue86%(51 flights)
- Wed83%(52 flights)
- Thu77%(51 flights)
- Fri82%(51 flights)
- Sat78%(32 flights)
- Sun71%(52 flights)
- 6–9 AM80%(332 flights)
- 9 PM–12 AM—(5 flights)
69%
May
Jun 79% → May 69% on time
| Month | On-time percentage | Flights |
|---|---|---|
| June 2025 | 79% | 29 |
| July 2025 | 90% | 30 |
| August 2025 | 68% | 31 |
| September 2025 | 83% | 29 |
| October 2025 | 97% | 31 |
| November 2025 | 77% | 30 |
| December 2025 | 68% | 28 |
| January 2026 | 69% | 29 |
| February 2026 | 76% | 21 |
| March 2026 | 96% | 27 |
| April 2026 | 85% | 26 |
| May 2026 | 69% | 26 |
- Departures on time
- 88%
- Diverted
- 0%
- Flights flown
- 337
- Months covered
- 12
Same route, other flights
Keep nerding
Based on 343 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.