Route Reliability
Washington → West Palm Beach
IAD–PBI · 859 miles · Washington Dulles International Airport to Palm Beach International Airport
- 82%
- Arrive within 15 minutes
- 5 min
- Average arrival delay
- 1.2%
- Cancelled
- 334
- 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 334 flights. No comparison to make.
What the data says
The late departure is the smart one here.
IAD–PBI flights departing between 6–9 PM arrived on time 90% of the time, versus 77% between 9 AM–12 PM.
Monday is the weak spot.
IAD–PBI flights arrived on time 87% of the time on Wednesdays. On Mondays: 76%.
Trending in the right direction.
IAD–PBI flights arrived on time 86% of the time over the last three months in the data, compared with 79% in the three months before that.
Flights on this route
The breakdown
- Mon76%(46 flights)
- Tue87%(46 flights)
- Wed87%(47 flights)
- Thu79%(47 flights)
- Fri77%(48 flights)
- Sat85%(47 flights)
- Sun81%(47 flights)
- 6–9 AM87%(54 flights)
- 9 AM–12 PM77%(91 flights)
- 12–3 PM83%(30 flights)
- 3–6 PM78%(101 flights)
- 6–9 PM90%(52 flights)
Oct 80% → May 90% on time
| Month | On-time percentage | Flights |
|---|---|---|
| October 2025 | 80% | 30 |
| November 2025 | 79% | 29 |
| December 2025 | 71% | 45 |
| January 2026 | 89% | 35 |
| February 2026 | 77% | 44 |
| March 2026 | 83% | 60 |
| April 2026 | 85% | 59 |
| May 2026 | 90% | 20 |
Same trip, other airports
Keep nerding
Based on 334 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.