Flight DL437
Delta Air Lines flight DL437
Looking for DL437 in the air…
Los Angeles (LAX) to Boston (BOS)
Historically, this flight arrives 15+ minutes late 33% of the time, and when it is late the delay averages 105 minutes. It was cancelled 1.8% of the time.
- On-time arrivals
- 67.5%
- Less than 15 minutes late
- Cancelled
- 1.8%
- Of scheduled flights
- Average delay when late
- 105 min
- Flights arriving 15+ minutes late
- Flights tracked
- 342
- Scheduled flights in the period
What caused the delays
- Airline (crew, maintenance, cleaning) 34%
- Late-arriving aircraft 28%
- Air traffic control & airport 19%
- Extreme weather 17%
- Security 1%
Share of delay minutes airlines attributed to each cause (BTS).
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Headlines found by Google News; stories open on the publisher's site.
Show as table
| Month | On time | Flights |
|---|---|---|
| September 2025 | 70.0% | 30 |
| October 2025 | 58.6% | 31 |
| November 2025 | 65.5% | 29 |
| December 2025 | 69.2% | 13 |
| January 2026 | 62.1% | 30 |
| February 2026 | 77.8% | 28 |
| March 2026 | 74.2% | 31 |
| April 2026 | 67.9% | 28 |
| May 2026 | 76.7% | 30 |
| June 2026 | 76.7% | 30 |
| July 2026 | 53.3% | 31 |
| August 2026 | 58.6% | 31 |
Source: U.S. DOT Bureau of Transportation Statistics on-time data, September 2025 – August 2026. Covers flights operated by reporting U.S. carriers. About our data