Washington (IAD) to Fort Lauderdale (FLL): On-Time Performance
Data through May 2026
Washington (IAD) to Fort Lauderdale (FLL) effectively runs on two schedules. In November 2024, 97% of arrivals were on time; in July 2025 that fell to 73% — a 23-point seasonal swing. Across the full period the route averages 83% on-time against a national 78%.
- On-time
- 83%
- arrived <15 min late
- Avg delay
- 14 min
- completed flights
- Cancelled
- 0.6%
- Flights/day
- 2.0
- last 12 months
- Duration
- 2h 48m
- scheduled
- Distance
- 901 mi
Monthly on-time trend
Best time to fly from IAD to FLL
Aim for departures around 7 p.m. (89% on-time); avoid 6 p.m. departures (70%).
By day of week
| Day | On-time | Avg delay |
|---|---|---|
| Monday | 83% | 14 min |
| Tuesdaybest | 88% | 10 min |
| Wednesday | 84% | 11 min |
| Thursday | 84% | 11 min |
| Friday | 80% | 15 min |
| Saturday | 84% | 12 min |
| Sunday | 78% | 22 min |
What causes delays on this route
Share of total delay minutes by cause, as reported by carriers to the US DOT.
- Late-arriving aircraft36%
- Airline operations19%
- National airspace system34%
- Weather12%
Frequently asked questions
- How often are flights from IAD to FLL delayed?
- 17% of IAD–FLL flights arrived 15 or more minutes late (the US DOT definition of a delay) between 2024-06 and 2026-05. The average arrival delay across completed flights was 14 minutes.
- What is the best time of day to fly from IAD to FLL?
- Departures around 7 p.m. have the best record (89% on-time), while departures around 6 p.m. have the worst (70%). As on most US routes, delays accumulate through the day, so earlier flights are generally safer.
- How long is the flight from IAD to FLL?
- The scheduled IAD–FLL flight time averages 2h 48m over 901 miles. Actual arrival times vary — flights on this route land 15+ minutes late 17% of the time.
- How often are IAD to FLL flights cancelled?
- 0.6% of scheduled flights on this route were cancelled between 2024-06 and 2026-05, at or below the national rate of 1.6%.
- What is the worst month to fly from IAD to FLL?
- July 2025 was the roughest month in this dataset, with only 73% of arrivals on time. The best was November 2024 at 97%. If your dates are flexible, that 23-point gap is worth planning around.
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Based on 1,511 flights, 2024-06–2026-05. Source: US DOT Bureau of Transportation Statistics. Updated 2026-07-01.