Fort Lauderdale (FLL) to Houston (IAH): On-Time Performance
Data through May 2026
When you fly FLL to IAH matters as much as anything else about the booking: the route swung from 91% on-time in November 2024 to just 58% in July 2024. Across the full period the route averages 80% on-time against a national 78%. Morning departures also hold up better than evening ones (92% vs 70%), which matters most in the rough months.
- On-time
- 80%
- arrived <15 min late
- Avg delay
- 16 min
- completed flights
- Cancelled
- 1.5%
- Flights/day
- 7.8
- last 12 months
- Duration
- 2h 57m
- scheduled
- Distance
- 966 mi
Best airline from FLL to IAH
3 airlines flew this route regularly between 2024-06 and 2026-05.
| Airline | On-time | Avg delay | Cancelled | Flights |
|---|---|---|---|---|
| United Airlinesmost reliable | 85% | 13 min | 1.2% | 3,262 |
| Spirit Airlines | 73% | 19 min | 1.9% | 2,112 |
| Frontier Airlines | 55% | 31 min | 2.4% | 84 |
Monthly on-time trend
Best time to fly from FLL to IAH
Aim for departures around 6 a.m. (94% on-time); avoid 2 p.m. departures (62%).
By day of week
| Day | On-time | Avg delay |
|---|---|---|
| Monday | 77% | 17 min |
| Tuesdaybest | 87% | 9 min |
| Wednesday | 83% | 13 min |
| Thursday | 82% | 14 min |
| Friday | 80% | 15 min |
| Saturday | 77% | 20 min |
| Sunday | 73% | 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 aircraft28%
- Airline operations32%
- National airspace system36%
- Weather4%
Frequently asked questions
- How often are flights from FLL to IAH delayed?
- 20% of FLL–IAH 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 16 minutes.
- Which airline is most reliable from FLL to IAH?
- United Airlines has the best on-time record on this route at 85%, based on 3,262 flights. 3 airlines flew FLL–IAH frequently enough to compare in this period.
- What is the best time of day to fly from FLL to IAH?
- Departures around 6 a.m. have the best record (94% on-time), while departures around 2 p.m. have the worst (62%). As on most US routes, delays accumulate through the day, so earlier flights are generally safer.
- How long is the flight from FLL to IAH?
- The scheduled FLL–IAH flight time averages 2h 57m over 966 miles. Actual arrival times vary — flights on this route land 15+ minutes late 20% of the time.
- How often are FLL to IAH flights cancelled?
- 1.5% 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 FLL to IAH?
- July 2024 was the roughest month in this dataset, with only 58% of arrivals on time. The best was November 2024 at 91%. If your dates are flexible, that 34-point gap is worth planning around.
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Based on 5,458 flights, 2024-06–2026-05. Source: US DOT Bureau of Transportation Statistics. Updated 2026-07-01.