Delta Air Lines: On-Time Performance & Delay Statistics
Data through May 2026
Delta Air Lines performs about in line with the industry: 81% of flights on time against a national 78%, 1.4% cancelled, and an average delay of 15 minutes when late. That puts it near the top — #3 of 15 US reporting carriers.
- On-time
- 81%
- arrived <15 min late
- Avg delay
- 15 min
- Cancelled
- 1.4%
- Flights/12mo
- 1,039,445
- Routes
- 1,288
- Airports
- 155
Monthly on-time trend
Delta Air Lines’s most reliable routes
Where Delta Air Lines flies most
| Route | Flights | On-time | Avg delay |
|---|---|---|---|
| ATL → MCO | 10,904 | 69% | 21 min |
| MCO → ATL | 10,902 | 76% | 21 min |
| ATL → LGA | 9,621 | 77% | 16 min |
| LGA → ATL | 9,616 | 80% | 16 min |
| ATL → TPA | 8,754 | 73% | 18 min |
| TPA → ATL | 8,754 | 79% | 17 min |
| ATL → FLL | 8,429 | 72% | 18 min |
| FLL → ATL | 8,426 | 77% | 19 min |
Airport hubs where this airline operates
Based on 2,055,401 flights, 2024-06–2026-05. Source: US DOT Bureau of Transportation Statistics. Updated 2026-07-01.