Airlines › Delta Air Lines › July 2025
Carrier month · July 2025
Delta Air Lines in July 2025
BTS: A flight is counted as on time if it arrived less than 15 minutes after its scheduled time. Only carriers with at least 0.5 percent of domestic scheduled passenger revenue report.
In July 2025, Delta Air Lines (DL) reported 94,066 scheduled domestic flights. 73.7% arrived on time, 1.4% were cancelled and 0.5% diverted.
All reporting carriers together recorded 69.0% on time and 2.5% cancelled that month, so the carrier was 4.7 points above the combined figure.
A year earlier, in July 2024, it reported 92,296 flights with 65.2% on time: a change of +8.5 points.
Of the delay minutes that carriers assigned to a BTS cause category that month, air carrier 41%, late-arriving aircraft 32% and national aviation system 21%.
- On time 73.7%
- Arrived 15+ minutes late 24.4%
- Cancelled 1.4%
- Diverted 0.5%
July 2025 against a year earlier, the carrier's year and all carriers
| Measure | Jul 2025 | Jul 2024 | DL, 12 months to Jul 2026 | All carriers, Jul 2025 |
|---|---|---|---|---|
| Arrived on time | 73.7% | 65.2% | 79.9% | 69.0% |
| Departed on time | 74.1% | 65.8% | 80.6% | 69.7% |
| Cancelled | 1.4% | 6.6% | 1.7% | 2.5% |
| Average arrival delay | 12.0 min | 22.6 min | 3.9 min | 17.3 min |
| Scheduled flights a day | 3,136 | 3,077 | 2,846 | 21,048 |
| Scheduled flights | 94,066 | 92,296 | 1,038,644 | 631,428 |
143 airports and 915 routes had DL flights that month.
Busiest airports that month
| Airport | Departures | On time | Avg arrival delay | Cancelled |
|---|---|---|---|---|
| ATL Atlanta | 21,855 | 68.6% | 16.4 min | 1.2% |
| MSP Minneapolis | 6,541 | 71.7% | 13.7 min | 0.6% |
| DTW Detroit | 5,431 | 70.8% | 15.0 min | 1.5% |
| SLC Salt Lake City | 4,779 | 76.6% | 9.1 min | 0.5% |
| LAX Los Angeles | 3,349 | 78.2% | 4.8 min | 0.9% |
| SEA Seattle | 2,970 | 78.2% | 5.9 min | 0.9% |
| JFK New York | 2,673 | 69.6% | 12.5 min | 3.5% |
| LGA New York | 2,491 | 64.1% | 23.4 min | 5.5% |
| BOS Boston | 2,348 | 71.3% | 10.8 min | 1.9% |
| MCO Orlando | 1,740 | 65.1% | 23.4 min | 2.4% |
| LAS Las Vegas | 1,343 | 79.2% | 4.8 min | 0.7% |
| SFO San Francisco | 1,233 | 75.2% | 6.9 min | 0.7% |
| TPA Tampa | 1,179 | 66.8% | 19.7 min | 1.5% |
| DEN Denver | 1,119 | 70.2% | 17.4 min | 2.3% |
| AUS Austin | 1,118 | 73.5% | 14.5 min | 1.3% |
By scheduled departure hour
Delay causes
Questions and answers
What share of Delta Air Lines flights were on time in July 2025?
73.7% of 94,066 scheduled domestic flights arrived less than 15 minutes late; all reporting carriers together recorded 69.0% that month.
How does that compare with a year earlier?
In July 2024 the carrier reported 92,296 flights with 65.2% on time and 6.6% cancelled, against 73.7% and 1.4% in July 2025.
Provenance
Source: Bureau of Transportation Statistics, Reporting Carrier On-Time Performance, file for July 2025; public domain. Domestic scheduled flights, totals and averages only. The site's data runs through July 2026. Full record for Delta Air Lines · methodology · corrections.