Airlines › Delta Air Lines › April 2025
Carrier month · April 2025
Delta Air Lines in April 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 April 2025, Delta Air Lines (DL) reported 84,188 scheduled domestic flights. 81.6% arrived on time, 0.5% were cancelled and 0.2% diverted.
All reporting carriers together recorded 79.5% on time and 0.8% cancelled that month, so the carrier was 2.1 points above the combined figure.
A year earlier, in April 2024, it reported 82,812 flights with 84.1% on time: a change of −2.5 points.
Of the delay minutes that carriers assigned to a BTS cause category that month, air carrier 45%, late-arriving aircraft 30% and national aviation system 20%.
- On time 81.6%
- Arrived 15+ minutes late 17.6%
- Cancelled 0.5%
- Diverted 0.2%
April 2025 against a year earlier, the carrier's year and all carriers
| Measure | Apr 2025 | Apr 2024 | DL, 12 months to Jul 2026 | All carriers, Apr 2025 |
|---|---|---|---|---|
| Arrived on time | 81.6% | 84.1% | 79.9% | 79.5% |
| Departed on time | 83.0% | 84.8% | 80.6% | 80.6% |
| Cancelled | 0.5% | 0.1% | 1.7% | 0.8% |
| Average arrival delay | 3.8 min | 2.5 min | 3.9 min | 5.7 min |
| Scheduled flights a day | 2,806 | 2,760 | 2,846 | 19,465 |
| Scheduled flights | 84,188 | 82,812 | 1,038,644 | 583,950 |
138 airports and 898 routes had DL flights that month.
Busiest airports that month
| Airport | Departures | On time | Avg arrival delay | Cancelled |
|---|---|---|---|---|
| ATL Atlanta | 19,215 | 77.2% | 9.2 min | 0.8% |
| MSP Minneapolis | 5,435 | 80.3% | 3.5 min | 0.1% |
| DTW Detroit | 4,914 | 79.8% | 5.1 min | 0.2% |
| SLC Salt Lake City | 4,676 | 82.7% | 1.7 min | 0.0% |
| LAX Los Angeles | 2,965 | 84.5% | -1.1 min | 0.1% |
| SEA Seattle | 2,594 | 85.9% | -2.9 min | 0.1% |
| JFK New York | 2,477 | 81.9% | -2.1 min | 0.2% |
| LGA New York | 2,358 | 79.6% | 3.0 min | 0.8% |
| BOS Boston | 2,160 | 77.3% | 7.2 min | 0.4% |
| MCO Orlando | 1,865 | 81.0% | 3.7 min | 0.7% |
| LAS Las Vegas | 1,401 | 82.0% | 1.2 min | 0.6% |
| TPA Tampa | 1,181 | 79.3% | 7.8 min | 1.0% |
| FLL Fort Lauderdale | 1,146 | 80.4% | 9.4 min | 0.9% |
| SFO San Francisco | 1,095 | 89.4% | -5.2 min | 0.2% |
| DFW Dallas/Fort Worth | 995 | 74.5% | 16.0 min | 0.3% |
By scheduled departure hour
Delay causes
Questions and answers
What share of Delta Air Lines flights were on time in April 2025?
81.6% of 84,188 scheduled domestic flights arrived less than 15 minutes late; all reporting carriers together recorded 79.5% that month.
How does that compare with a year earlier?
In April 2024 the carrier reported 82,812 flights with 84.1% on time and 0.1% cancelled, against 81.6% and 0.5% in April 2025.
Provenance
Source: Bureau of Transportation Statistics, Reporting Carrier On-Time Performance, file for April 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.