Delta Air Lines on-time performance
1,190 routes · 153 airports · Aug 2025 – Jul 2026
On-time arrivals
82%
arrived < 15 min late
Cancelled
1.7%
17,789 flights
Avg arrival delay
14 min
71 min when late
US airline rank
#2 of 14
by on-time arrival
Key facts
- Delta Air Lines flights arrived on time 82% of the time in Aug 2025 – Jul 2026, better than the 78% national average.
- 1.7% were cancelled, and 7% arrived an hour or more late.
- That ranks #2 of 14 US airlines for on-time arrivals.
- The largest source of delay minutes was airline (crew, maintenance, cleaning, fueling) (45%).
Monthly trend
Delta Air Lines's most delayed routes
Delta Air Lines's most reliable routes
Delta Air Lines at its biggest airports
Departures operated by this airline at each airport.
| Airport | On time | Cancelled | Avg delay | Departures |
|---|---|---|---|---|
| ATL Atlanta | 80% | 1.7% | 13 min | 240,720 |
| MSP Minneapolis | 80% | 1.2% | 13 min | 64,787 |
| DTW Detroit | 78% | 1.4% | 15 min | 60,323 |
| SLC Salt Lake City | 84% | 0.8% | 11 min | 54,665 |
| LAX Los Angeles | 81% | 1.1% | 14 min | 37,433 |
| SEA Seattle | 81% | 1.1% | 13 min | 32,324 |
| JFK New York | 78% | 2.8% | 16 min | 30,695 |
| LGA New York | 75% | 4.1% | 20 min | 29,623 |
| BOS Boston | 77% | 2.1% | 18 min | 26,458 |
| MCO Orlando | 78% | 1.9% | 19 min | 21,501 |
| LAS Las Vegas | 85% | 1.1% | 12 min | 15,657 |
| TPA Tampa | 81% | 1.7% | 16 min | 14,011 |
| SFO San Francisco | 77% | 1.3% | 16 min | 13,902 |
| AUS Austin | 82% | 1.5% | 15 min | 13,127 |
| FLL Fort Lauderdale | 77% | 2.2% | 18 min | 12,922 |
Why flights were late
- Airline (crew, maintenance, cleaning, fueling)45%
- Late-arriving aircraft29%
- Air traffic control & airport congestion22%
- Extreme weather4%
- Security0%
Why flights were cancelled
- Airline (crew, maintenance, cleaning, fueling)59%
- Extreme weather37%
- Air traffic control & airport congestion4%
- Security0%
Busiest Delta Air Lines routes
- ATL → MCO 71%
- MCO → ATL 79%
- ATL → LGA 77%
- LGA → ATL 80%
- ATL → TPA 75%
- TPA → ATL 82%
- ATL → FLL 74%
- FLL → ATL 79%
- ATL → LAX 79%
- DCA → ATL 81%
- ATL → DCA 68%
- LAX → ATL 81%
- JAX → ATL 87%
- ATL → JAX 77%
- RDU → ATL 89%
- ATL → RDU 83%
- DTW → ATL 81%
- ATL → DTW 79%
- ATL → PBI 76%
- PBI → ATL 84%
- ATL → BOS 76%
- BOS → ATL 82%
- ATL → BNA 81%
- BNA → ATL 86%
- LAX → JFK 81%
- JFK → LAX 77%
- MEM → ATL 87%
- ATL → MEM 82%
- ATL → BHM 84%
- BHM → ATL 87%
- LAS → ATL 87%
- ATL → LAS 78%
- MIA → ATL 77%
- ATL → MIA 71%
- MSY → ATL 87%
- ATL → MSY 83%
- ATL → MSP 81%
- CHS → ATL 90%
- ATL → CHS 83%
- MSP → ATL 84%
- ATL → AUS 81%
- AUS → ATL 86%
- EWR → ATL 80%
- ATL → EWR 72%
- SAV → ATL 88%
- ATL → SAV 83%
- PHL → ATL 84%
- ATL → PHL 76%
- SLC → ATL 87%
- ATL → SLC 83%
- GSP → ATL 90%
- ATL → GSP 84%
- PNS → ATL 89%
- ATL → PNS 83%
- BWI → ATL 86%
- ATL → BWI 79%
- DEN → ATL 86%
- ATL → DEN 79%
- DFW → ATL 83%
- ATL → DFW 76%
Data: U.S. DOT Bureau of Transportation Statistics, Aug 2025 – Jul 2026 (12 months). Latest month published by BTS: July 2026. How we calculate this.