Airports › Washington (IAD) › October 2025
Airport month · October 2025
Washington Dulles International in October 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 October 2025, reporting carriers scheduled 4,854 domestic departures from Washington Dulles International (IAD). 87.3% left less than 15 minutes late and 84.3% reached their destination on time; 0.3% were cancelled.
Nationally that month, 80.0% of flights departed on time and 79.1% arrived on time, so IAD departures were 7.3 points above the national departure figure.
A year earlier, in October 2024, the airport had 4,662 departures with 90.0% leaving on time: a change of −2.7 points, with flights up 4%.
Flights arriving at IAD that month were on time 85.0% of the time (4,850 scheduled arrivals).
Of the delay minutes that carriers assigned to a BTS cause category that month, late-arriving aircraft 39%, national aviation system 31% and air carrier 28%.
- On time 84.3%
- Arrived 15+ minutes late 15.3%
- Cancelled 0.3%
- Diverted 0.2%
October 2025 against a year earlier, the airport's year and the nation
| Measure | Oct 2025 | Oct 2024 | IAD, 12 months to Jul 2026 | All reported flights, Oct 2025 |
|---|---|---|---|---|
| Departed on time | 87.3% | 90.0% | 82.6% | 80.0% |
| Arrived on time | 84.3% | 90.6% | 80.1% | 79.1% |
| Cancelled | 0.3% | 0.7% | 1.4% | 0.5% |
| Average departure delay (late minutes only) | 10.0 min | 6.4 min | 14.7 min | 13.9 min |
| Scheduled departures a day | 162 | 155 | 159 | 20,195 |
| Scheduled departures | 4,854 | 4,662 | 58,031 | 605,844 |
Airlines that month
| Reporting carrier | Flights | Share | On time | Avg arrival delay | Cancelled |
|---|---|---|---|---|---|
| UA United Airlines | 3,007 | 62% | 84.5% | 1.0 min | 0.2% |
| YX Republic Airline | 785 | 16% | 86.1% | 0.3 min | 0.3% |
| DL Delta Air Lines | 256 | 5% | 81.6% | 0.8 min | 0.4% |
| OO SkyWest Airlines | 223 | 5% | 90.1% | -0.6 min | 0.0% |
| F9 Frontier Airlines | 126 | 3% | 76.2% | 10.2 min | 1.6% |
| AA American Airlines | 120 | 2% | 81.7% | -2.1 min | 0.0% |
| AS Alaska Airlines | 106 | 2% | 80.2% | -0.4 min | 1.9% |
| WN Southwest Airlines | 99 | 2% | 71.7% | 4.6 min | 0.0% |
| OH PSA Airlines | 81 | 2% | 88.9% | -8.2 min | 0.0% |
| G4 Allegiant Air | 51 | 1% | 82.4% | 12.9 min | 0.0% |
Busiest routes that month
| Route | Cities | Flights | On time | Avg arrival delay | Cancelled |
|---|---|---|---|---|---|
| IAD–ATL | Washington to Atlanta | 334 | 81.1% | 3.0 min | 0.3% |
| IAD–DEN | Washington to Denver | 283 | 83.7% | -2.0 min | 0.0% |
| IAD–SFO | Washington to San Francisco | 246 | 82.1% | 2.8 min | 0.8% |
| IAD–LAX | Washington to Los Angeles | 202 | 89.1% | -4.9 min | 0.5% |
| IAD–IAH | Washington to Houston | 180 | 82.2% | 0.9 min | 0.0% |
| IAD–MCO | Washington to Orlando | 177 | 83.1% | 5.2 min | 0.0% |
| IAD–ORD | Washington to Chicago | 176 | 72.7% | 7.8 min | 0.0% |
| IAD–DFW | Washington to Dallas/Fort Worth | 173 | 82.7% | -2.9 min | 0.6% |
| IAD–SEA | Washington to Seattle | 156 | 83.3% | 0.1 min | 1.3% |
| IAD–CLT | Washington to Charlotte | 155 | 85.8% | -2.2 min | 0.0% |
| IAD–BOS | Washington to Boston | 124 | 73.4% | 16.6 min | 0.8% |
| IAD–EWR | Washington to Newark | 124 | 72.6% | 22.7 min | 0.0% |
By scheduled departure hour
Delay causes
Questions and answers
How many flights left IAD on time in October 2025?
87.3% of 4,854 scheduled domestic departures left less than 15 minutes late, and 84.3% reached their destination on time. The national figures that month were 80.0% and 79.1%.
How does that compare with a year earlier?
In October 2024, 90.0% of 4,662 departures left on time and 0.7% were cancelled, against 87.3% and 0.3% in October 2025.
Provenance
Source: Bureau of Transportation Statistics, Reporting Carrier On-Time Performance, file for October 2025; 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.