Fort Lauderdale (FLL) to Houston (IAH): On-Time Performance
Data through July 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 (91% vs 70%), which matters most in the rough months.
- On-time
- 80%
- arrived <15 min late
- Avg delay
- 16 min
- completed flights
- Cancelled
- 1.4%
- Flights/day
- 7.7
- last 12 months
- Duration
- 2h 57m
- scheduled
- Distance
- 966 mi
Best airline from FLL to IAH
4 airlines flew this route regularly between 2024-07 and 2026-07.
| Airline | On-time | Avg delay | Cancelled | Flights |
|---|---|---|---|---|
| United Airlinesmost reliable | 85% | 13 min | 1.1% | 3,412 |
| Spirit Airlines | 74% | 19 min | 1.8% | 2,021 |
| JetBlue Airways | 65% | 24 min | 4.3% | 69 |
| Frontier Airlines | 49% | 40 min | 3.0% | 134 |
Monthly on-time trend
Best time to fly from FLL to IAH
Aim for departures around 6 a.m. (94% on-time); avoid 12 p.m. departures (63%).
By day of week
| Day | On-time | Avg delay |
|---|---|---|
| Monday | 76% | 18 min |
| Tuesdaybest | 87% | 10 min |
| Wednesday | 83% | 13 min |
| Thursday | 81% | 15 min |
| Friday | 81% | 14 min |
| Saturday | 78% | 20 min |
| Sunday | 73% | 20 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 operations33%
- National airspace system35%
- 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 2024-07 and 2026-07. 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 3,412 flights. 4 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 12 p.m. have the worst (63%). 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?
- 1.4% 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 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 5,636 flights, 2024-07–2026-07. Source: US DOT Bureau of Transportation Statistics. Updated 2026-09-28.