Airlines › Delta Air Lines › June 2025
Carrier month · June 2025
Delta Air Lines in June 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 June 2025, Delta Air Lines (DL) reported 91,122 scheduled domestic flights. 72.2% arrived on time, 1.7% were cancelled and 0.4% diverted.
All reporting carriers together recorded 70.3% on time and 1.6% cancelled that month, so the carrier was 1.9 points above the combined figure.
A year earlier, in June 2024, it reported 89,065 flights with 79.7% on time: a change of −7.5 points.
Of the delay minutes that carriers assigned to a BTS cause category that month, air carrier 42%, late-arriving aircraft 32% and national aviation system 21%.
- On time 72.2%
- Arrived 15+ minutes late 25.6%
- Cancelled 1.7%
- Diverted 0.4%
June 2025 against a year earlier, the carrier's year and all carriers
| Measure | Jun 2025 | Jun 2024 | DL, 12 months to Jul 2026 | All carriers, Jun 2025 |
|---|---|---|---|---|
| Arrived on time | 72.2% | 79.7% | 79.9% | 70.3% |
| Departed on time | 72.6% | 79.3% | 80.6% | 71.4% |
| Cancelled | 1.7% | 0.2% | 1.7% | 1.6% |
| Average arrival delay | 13.1 min | 6.3 min | 3.9 min | 15.6 min |
| Scheduled flights a day | 3,037 | 2,969 | 2,846 | 20,386 |
| Scheduled flights | 91,122 | 89,065 | 1,038,644 | 611,575 |
148 airports and 930 routes had DL flights that month.
Busiest airports that month
| Airport | Departures | On time | Avg arrival delay | Cancelled |
|---|---|---|---|---|
| ATL Atlanta | 21,179 | 63.0% | 20.4 min | 2.5% |
| MSP Minneapolis | 6,245 | 74.3% | 10.0 min | 0.8% |
| DTW Detroit | 5,319 | 72.9% | 12.9 min | 1.1% |
| SLC Salt Lake City | 4,663 | 78.2% | 6.8 min | 0.5% |
| LAX Los Angeles | 3,282 | 75.8% | 7.6 min | 0.8% |
| SEA Seattle | 2,851 | 81.3% | 2.0 min | 0.7% |
| JFK New York | 2,600 | 71.2% | 14.2 min | 1.5% |
| LGA New York | 2,394 | 62.7% | 26.0 min | 2.7% |
| BOS Boston | 2,268 | 73.4% | 9.2 min | 0.7% |
| MCO Orlando | 1,699 | 67.2% | 21.5 min | 1.4% |
| LAS Las Vegas | 1,379 | 77.7% | 6.9 min | 1.0% |
| SFO San Francisco | 1,187 | 78.1% | 8.0 min | 0.7% |
| TPA Tampa | 1,151 | 70.6% | 16.2 min | 1.1% |
| AUS Austin | 1,082 | 73.4% | 11.8 min | 0.9% |
| ORD Chicago | 1,079 | 65.5% | 24.4 min | 1.6% |
By scheduled departure hour
Delay causes
Questions and answers
What share of Delta Air Lines flights were on time in June 2025?
72.2% of 91,122 scheduled domestic flights arrived less than 15 minutes late; all reporting carriers together recorded 70.3% that month.
How does that compare with a year earlier?
In June 2024 the carrier reported 89,065 flights with 79.7% on time and 0.2% cancelled, against 72.2% and 1.7% in June 2025.
Provenance
Source: Bureau of Transportation Statistics, Reporting Carrier On-Time Performance, file for June 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.