Airports › Washington (IAD) › July 2026
Airport month · July 2026
Washington Dulles International in July 2026
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 2026, reporting carriers scheduled 5,258 domestic departures from Washington Dulles International (IAD). 72.8% left less than 15 minutes late and 70.9% reached their destination on time; 3.2% were cancelled.
Nationally that month, 68.8% of flights departed on time and 69.4% arrived on time, so IAD departures were 4.0 points above the national departure figure.
A year earlier, in July 2025, the airport had 5,248 departures with 69.2% leaving on time: a change of +3.6 points, with flights up 0%.
Flights arriving at IAD that month were on time 73.7% of the time (5,287 scheduled arrivals).
Of the delay minutes that carriers assigned to a BTS cause category that month, late-arriving aircraft 33%, national aviation system 27% and air carrier 25%.
- On time 70.9%
- Arrived 15+ minutes late 25.4%
- Cancelled 3.2%
- Diverted 0.5%
July 2026 against a year earlier, the airport's year and the nation
| Measure | Jul 2026 | Jul 2025 | IAD, 12 months to Jul 2026 | All reported flights, Jul 2026 |
|---|---|---|---|---|
| Departed on time | 72.8% | 69.2% | 82.6% | 68.8% |
| Arrived on time | 70.9% | 67.2% | 80.1% | 69.4% |
| Cancelled | 3.2% | 2.9% | 1.4% | 2.6% |
| Average departure delay (late minutes only) | 25.8 min | 31.0 min | 14.7 min | 24.1 min |
| Scheduled departures a day | 175 | 175 | 159 | 21,066 |
| Scheduled departures | 5,258 | 5,248 | 58,031 | 631,970 |
Airlines that month
| Reporting carrier | Flights | Share | On time | Avg arrival delay | Cancelled |
|---|---|---|---|---|---|
| UA United Airlines | 3,193 | 61% | 71.6% | 16.2 min | 2.0% |
| YX Republic Airline | 845 | 16% | 69.8% | 10.8 min | 8.5% |
| DL Delta Air Lines | 313 | 6% | 69.6% | 26.9 min | 2.6% |
| OO SkyWest Airlines | 244 | 5% | 79.5% | 23.3 min | 1.6% |
| F9 Frontier Airlines | 192 | 4% | 49.5% | 27.3 min | 5.7% |
| AA American Airlines | 180 | 3% | 73.3% | 12.8 min | 2.2% |
| AS Alaska Airlines | 123 | 2% | 78.9% | 4.4 min | 0.8% |
| OH PSA Airlines | 89 | 2% | 75.3% | 13.0 min | 3.4% |
| G4 Allegiant Air | 79 | 2% | 63.3% | 21.7 min | 2.5% |
Busiest routes that month
| Route | Cities | Flights | On time | Avg arrival delay | Cancelled |
|---|---|---|---|---|---|
| IAD–ATL | Washington to Atlanta | 366 | 58.7% | 31.7 min | 4.9% |
| IAD–DEN | Washington to Denver | 266 | 79.3% | 3.2 min | 0.8% |
| IAD–LAX | Washington to Los Angeles | 242 | 81.8% | 1.3 min | 0.0% |
| IAD–ORD | Washington to Chicago | 216 | 64.4% | 29.9 min | 3.2% |
| IAD–SEA | Washington to Seattle | 212 | 81.6% | 2.5 min | 0.9% |
| IAD–SFO | Washington to San Francisco | 209 | 72.2% | 11.4 min | 0.0% |
| IAD–DFW | Washington to Dallas/Fort Worth | 196 | 69.9% | 14.0 min | 0.5% |
| IAD–MCO | Washington to Orlando | 177 | 59.3% | 25.3 min | 4.0% |
| IAD–BOS | Washington to Boston | 176 | 68.8% | 16.4 min | 6.8% |
| IAD–IAH | Washington to Houston | 159 | 78.0% | 8.6 min | 0.0% |
| IAD–EWR | Washington to Newark | 155 | 61.3% | 49.5 min | 9.0% |
| IAD–CLT | Washington to Charlotte | 150 | 69.3% | 21.3 min | 4.7% |
By scheduled departure hour
Delay causes
Questions and answers
How many flights left IAD on time in July 2026?
72.8% of 5,258 scheduled domestic departures left less than 15 minutes late, and 70.9% reached their destination on time. The national figures that month were 68.8% and 69.4%.
How does that compare with a year earlier?
In July 2025, 69.2% of 5,248 departures left on time and 2.9% were cancelled, against 72.8% and 3.2% in July 2026.
Provenance
Source: Bureau of Transportation Statistics, Reporting Carrier On-Time Performance, file for July 2026; public domain. Domestic scheduled flights by reporting carriers, totals and averages only. The site's data runs through July 2026. Full record for IAD · methodology · corrections.