Flight DL1199
Delta Air Lines flight DL1199
Looking for DL1199 in the air…
Atlanta (ATL) to Chicago (ORD)
Historically, this flight arrives 15+ minutes late 29% of the time, and when it is late the delay averages 75 minutes. It was cancelled 2.7% of the time.
- On-time arrivals
- 70.6%
- Less than 15 minutes late
- Cancelled
- 2.7%
- Of scheduled flights
- Average delay when late
- 75 min
- Flights arriving 15+ minutes late
- Flights tracked
- 328
- Scheduled flights in the period
What caused the delays
- Air traffic control & airport 44%
- Airline (crew, maintenance, cleaning) 35%
- Late-arriving aircraft 12%
- Extreme weather 10%
- 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 | 92.3% | 13 |
| October 2025 | 72.4% | 29 |
| November 2025 | 52.4% | 22 |
| December 2025 | 57.9% | 21 |
| January 2026 | 74.2% | 31 |
| February 2026 | 75.0% | 28 |
| March 2026 | 67.9% | 31 |
| April 2026 | 69.2% | 30 |
| May 2026 | 83.9% | 31 |
| June 2026 | 72.4% | 30 |
| July 2026 | 55.2% | 31 |
| August 2026 | 75.9% | 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