Route Reliability
Buffalo → Washington
BUF–IAD · 283 miles · Buffalo Niagara International Airport to Washington Dulles International Airport
- 82%
- Arrive within 15 minutes
- 15 min
- Average arrival delay
- 2.6%
- Cancelled
- 1,171
- Flights in the data
Data through May 2026.
United Airlines is the only airline in this data on this route, arriving on time 82% of the time across 1,171 flights. No comparison to make.
What the data says
Morning flights do better here.
BUF–IAD flights departing between 6–9 AM arrived on time 87% of the time, versus 68% between 3–6 PM.
Wednesday is the weak spot.
BUF–IAD flights arrived on time 86% of the time on Saturdays. On Wednesdays: 76%.
Trending in the right direction.
BUF–IAD flights arrived on time 87% of the time over the last three months in the data, compared with 74% 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
- Mon81%(166 flights)
- Tue82%(156 flights)
- Wed76%(155 flights)
- Thu83%(173 flights)
- Fri84%(166 flights)
- Sat86%(151 flights)
- Sun84%(172 flights)
- 6–9 AM87%(190 flights)
- 9 AM–12 PM86%(344 flights)
- 12–3 PM77%(303 flights)
- 3–6 PM68%(25 flights)
- 6–9 PM81%(277 flights)
Jun 74% → May 89% on time
| Month | On-time percentage | Flights |
|---|---|---|
| June 2025 | 74% | 108 |
| July 2025 | 75% | 115 |
| August 2025 | 88% | 113 |
| September 2025 | 91% | 99 |
| October 2025 | 90% | 89 |
| November 2025 | 79% | 84 |
| December 2025 | 69% | 73 |
| January 2026 | 79% | 62 |
| February 2026 | 75% | 68 |
| March 2026 | 82% | 106 |
| April 2026 | 92% | 106 |
| May 2026 | 89% | 116 |
Same trip, other airports
Keep nerding
Based on 1,171 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.