FLL to IAH flight delays & on-time performance
Nonstop flights from Fort Lauderdale Hollywood International Airport to George Bush Intercontinental Airport · 966 miles · Aug 2025 – Jul 2026
No FAA-reported ground stops or delays at FLL or IAH right now. Individual flights can still be delayed by the airline; check with your airline for your flight.
Key facts
- Flights from Fort Lauderdale (FLL) to Houston (IAH) arrived on time 81% of the time in Aug 2025 – Jul 2026, better than the 78% national average.
- 1.2% were cancelled, and 7% arrived an hour or more late.
- United Airlines was the most punctual airline here (88% on time); Spirit Airlines was the least (72%).
- Departures scheduled around 11am did best (95% on time); around 10pm did worst (66%).
- Tuesday was the most reliable day to fly (88% on time) and Sunday the least (71%).
- The largest source of delay minutes was airline (crew, maintenance, cleaning, fueling) (37%).
Which airline is most on time from FLL to IAH?
Ranked by on-time arrival rate. Regional airlines fly under their partner's brand (e.g. SkyWest for Delta Connection or United Express).
| Airline | On time | Cancelled | Avg delay | 1 hr+ late | Flights |
|---|---|---|---|---|---|
| United Airlines | 88% | 0.7% | 10 min | 4.6% | 1,830 |
| Spirit Airlines | 72% | 1.9% | 22 min | 11.7% | 783 |
| JetBlue | 66% | 4.3% | 24 min | 12.3% | 69 |
| Frontier Airlines | 49% | 3.0% | 40 min | 19.2% | 134 |
Best time of day to fly
On-time arrival rate by scheduled departure hour (local time).
- 6am95%383 flights
- 7am92%139 flights
- 8am94%144 flights
- 9am88%216 flights
- 11am95%248 flights
- 12pm45%68 flights
- 1pm81%394 flights
- 3pm66%98 flights
- 4pm74%236 flights
- 5pm77%212 flights
- 6pm72%300 flights
- 7pm82%50 flights
- 8pm78%68 flights
- 9pm65%71 flights
- 10pm66%187 flights
Best day of the week
On-time arrival rate by day of departure.
- Monday79%1.4% cancelled
- Tuesday88%0.3% cancelled
- Wednesday87%1.1% cancelled
- Thursday84%0.9% cancelled
- Friday80%1.2% cancelled
- Saturday80%1.5% cancelled
- Sunday71%1.9% cancelled
On-time trend by month
Why flights are late
Share of delay minutes by cause, as reported by airlines to the DOT.
- Airline (crew, maintenance, cleaning, fueling)37%
- Air traffic control & airport congestion32%
- Late-arriving aircraft28%
- Extreme weather3%
- Security0%
Why flights are cancelled
Share of cancellations by reason.
- Extreme weather50%
- Airline (crew, maintenance, cleaning, fueling)29%
- Air traffic control & airport congestion21%
- Security0%
FLL to IAH: common questions
- How often are FLL to IAH flights on time?
- 81% of flights arrived less than 15 minutes late in Aug 2025 – Jul 2026, compared with 78% for all US flights.
- How often are flights from Fort Lauderdale to Houston cancelled?
- 1.2% of scheduled flights were cancelled (34 of 2,816).
- How long are typical delays?
- Across all flights the average arrival delay was 15 min (early arrivals count as zero). Flights that were late arrived 76 min behind schedule on average, and 7.4% of flights were an hour or more late.
- How long is taxi time at FLL?
- Flights on this route spent 19 min taxiing from the gate to takeoff on average.
Related routes
Return trip: IAH to FLL — 79% on time
More flights from Fort Lauderdale
Data: U.S. DOT Bureau of Transportation Statistics, Aug 2025 – Jul 2026 (12 months). Latest month published by BTS: July 2026. Route: FLL → IAH, nonstop flights by US airlines that report to the DOT. How we calculate this.