Route Reliability
Washington → Huntsville
IAD–HSV · 596 miles · Washington Dulles International Airport to Huntsville International Airport
- 80%
- Arrive within 15 minutes
- 17 min
- Average arrival delay
- 1.5%
- Cancelled
- 1,054
- Flights in the data
Data through May 2026.
United Airlines is the only airline in this data on this route, arriving on time 80% of the time across 1,054 flights. No comparison to make.
What the data says
The late departure is the smart one here.
IAD–HSV flights departing between 6–9 PM arrived on time 92% of the time, versus 68% between 3–6 PM.
Sunday scaries are real for this one.
IAD–HSV flights arrived on time 85% of the time on Thursdays. On Sundays: 72%.
Ticking up lately.
IAD–HSV flights arrived on time 85% of the time over the last three months in the data, compared with 80% 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
- Mon77%(152 flights)
- Tue83%(139 flights)
- Wed81%(139 flights)
- Thu85%(150 flights)
- Fri81%(154 flights)
- Sat81%(148 flights)
- Sun72%(154 flights)
- 6–9 AM87%(189 flights)
- 9 AM–12 PM92%(135 flights)
- 12–3 PM74%(359 flights)
- 3–6 PM68%(114 flights)
- 6–9 PM92%(25 flights)
- 9 PM–12 AM81%(214 flights)
Jun 61% → May 80% on time
| Month | On-time percentage | Flights |
|---|---|---|
| June 2025 | 61% | 89 |
| July 2025 | 66% | 86 |
| August 2025 | 80% | 93 |
| September 2025 | 88% | 88 |
| October 2025 | 84% | 94 |
| November 2025 | 85% | 88 |
| December 2025 | 70% | 91 |
| January 2026 | 83% | 76 |
| February 2026 | 88% | 75 |
| March 2026 | 86% | 87 |
| April 2026 | 90% | 77 |
| May 2026 | 80% | 92 |
Same trip, other airports
Keep nerding
Based on 1,054 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.