Flight DL518
Delta Air Lines flight DL518
Looking for DL518 in the air…
Atlanta (ATL) to Boston (BOS)
Historically, this flight arrives 15+ minutes late 47% of the time, and when it is late the delay averages 73 minutes. It was cancelled 1.4% of the time.
- On-time arrivals
- 52.7%
- Less than 15 minutes late
- Cancelled
- 1.4%
- Of scheduled flights
- Average delay when late
- 73 min
- Flights arriving 15+ minutes late
- Flights tracked
- 279
- Scheduled flights in the period
What caused the delays
- Air traffic control & airport 52%
- Airline (crew, maintenance, cleaning) 37%
- Late-arriving aircraft 9%
- Extreme weather 2%
- Security 1%
Share of delay minutes airlines attributed to each cause (BTS).
Orlando (MCO) to Boston (BOS)
Only 12 flights on record, which is too few for reliable odds.
- On-time arrivals
- 25.0%
- Less than 15 minutes late
- Cancelled
- 0.0%
- Of scheduled flights
- Average delay when late
- 83 min
- Flights arriving 15+ minutes late
- Flights tracked
- 12
- Scheduled flights in the period
What caused the delays
- Late-arriving aircraft 55%
- Air traffic control & airport 30%
- Airline (crew, maintenance, cleaning) 15%
- Extreme weather 0%
- Security 0%
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 | 40.9% | 22 |
| October 2025 | 50.0% | 29 |
| November 2025 | 63.3% | 30 |
| December 2025 | 60.7% | 28 |
| January 2026 | 46.2% | 14 |
| February 2026 | 88.9% | 9 |
| March 2026 | 42.9% | 21 |
| April 2026 | 45.0% | 20 |
| May 2026 | 66.7% | 28 |
| June 2026 | 58.6% | 29 |
| July 2026 | 37.9% | 30 |
| August 2026 | 35.5% | 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