Fort Lauderdale (FLL) to Washington (IAD): On-Time Performance
Data through July 2026
When you fly FLL to IAD matters as much as anything else about the booking: the route swung from 95% on-time in November 2024 to just 63% in July 2026. Across the full period the route averages 85% on-time against a national 78%. Morning departures also hold up better than evening ones (91% vs 76%), which matters most in the rough months.
- On-time
- 85%
- arrived <15 min late
- Avg delay
- 12 min
- completed flights
- Cancelled
- 0.8%
- Flights/day
- 2.1
- last 12 months
- Duration
- 2h 35m
- scheduled
- Distance
- 901 mi
Best airline from FLL to IAD
2 airlines flew this route regularly between 2024-07 and 2026-07.
| Airline | On-time | Avg delay | Cancelled | Flights |
|---|---|---|---|---|
| United Airlinesmost reliable | 87% | 10 min | 0.6% | 1,540 |
| Frontier Airlines | 53% | 51 min | 5.6% | 72 |
Monthly on-time trend
Best time to fly from FLL to IAD
Aim for departures around 11 a.m. (94% on-time); avoid 5 p.m. departures (60%).
By day of week
| Day | On-time | Avg delay |
|---|---|---|
| Monday | 87% | 12 min |
| Tuesdaybest | 93% | 7 min |
| Wednesday | 87% | 12 min |
| Thursday | 89% | 11 min |
| Friday | 83% | 12 min |
| Saturday | 86% | 8 min |
| Sunday | 72% | 21 min |
What causes delays on this route
Share of total delay minutes by cause, as reported by carriers to the US DOT.
- Late-arriving aircraft39%
- Airline operations24%
- National airspace system27%
- Weather10%
Frequently asked questions
- How often are flights from FLL to IAD delayed?
- 15% of FLL–IAD flights arrived 15 or more minutes late (the US DOT definition of a delay) between 2024-07 and 2026-07. The average arrival delay across completed flights was 12 minutes.
- Which airline is most reliable from FLL to IAD?
- United Airlines has the best on-time record on this route at 87%, based on 1,540 flights. 2 airlines flew FLL–IAD frequently enough to compare in this period.
- What is the best time of day to fly from FLL to IAD?
- Departures around 11 a.m. have the best record (94% on-time), while departures around 5 p.m. have the worst (60%). As on most US routes, delays accumulate through the day, so earlier flights are generally safer.
- How long is the flight from FLL to IAD?
- The scheduled FLL–IAD flight time averages 2h 35m over 901 miles. Actual arrival times vary — flights on this route land 15+ minutes late 15% of the time.
- How often are FLL to IAD flights cancelled?
- 0.8% of scheduled flights on this route were cancelled between 2024-07 and 2026-07, at or below the national rate of 1.6%.
- What is the worst month to fly from FLL to IAD?
- July 2026 was the roughest month in this dataset, with only 63% of arrivals on time. The best was November 2024 at 95%. If your dates are flexible, that 32-point gap is worth planning around.
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Based on 1,612 flights, 2024-07–2026-07. Source: US DOT Bureau of Transportation Statistics. Updated 2026-09-28.