Route Reliability
Dayton → Washington
DAY–IAD · 367 miles · Dayton International Airport to Washington Dulles International Airport
- 81%
- Arrive within 15 minutes
- 13 min
- Average arrival delay
- 1.8%
- Cancelled
- 942
- Flights in the data
Data through May 2026.
United Airlines is the only airline in this data on this route, arriving on time 81% of the time across 942 flights. No comparison to make.
What the data says
Mornings have a slight edge.
Departures between 9 AM–12 PM arrived on time 84% of the time, against 79% between 12–3 PM.
Friday is doing you no favors.
DAY–IAD flights arrived on time 86% of the time on Thursdays. On Fridays: 78%.
Trending in the right direction.
DAY–IAD flights arrived on time 88% of the time over the last three months in the data, compared with 76% in the three months before that.
Best historical flights
Ranked by on-time arrivals, minimum 100 flights. Past performance, not a promise.
Top flights by on-time rate
More flights on this route
The breakdown
- Mon78%(138 flights)
- Tue85%(126 flights)
- Wed81%(125 flights)
- Thu86%(132 flights)
- Fri78%(140 flights)
- Sat83%(121 flights)
- Sun80%(140 flights)
- 9 AM–12 PM84%(337 flights)
- 12–3 PM79%(357 flights)
- 6–9 PM82%(228 flights)
Jun 69% → May 81% on time
| Month | On-time percentage | Flights |
|---|---|---|
| June 2025 | 69% | 75 |
| July 2025 | 70% | 81 |
| August 2025 | 88% | 88 |
| September 2025 | 93% | 90 |
| October 2025 | 84% | 91 |
| November 2025 | 78% | 74 |
| December 2025 | 68% | 75 |
| January 2026 | 77% | 64 |
| February 2026 | 84% | 56 |
| March 2026 | 92% | 65 |
| April 2026 | 90% | 73 |
| May 2026 | 81% | 90 |
Same trip, other airports
Keep nerding
Based on 942 historical flights, because apparently we checked. Historical flight data: U.S. Bureau of Transportation Statistics, June 2025 – May 2026. Data through May 2026. How we calculate this.