IAH to FLL flight delays & on-time performance
Nonstop flights from George Bush Intercontinental Airport to Fort Lauderdale Hollywood International Airport · 966 miles · Aug 2025 – Jul 2026
No FAA-reported ground stops or delays at IAH or FLL right now. Individual flights can still be delayed by the airline; check with your airline for your flight.
Key facts
- Flights from Houston (IAH) to Fort Lauderdale (FLL) arrived on time 79% of the time in Aug 2025 – Jul 2026, better than the 78% national average.
- 1.2% were cancelled, and 8% arrived an hour or more late.
- United Airlines was the most punctual airline here (85% on time); Spirit Airlines was the least (72%).
- Departures scheduled around 2pm did best (84% on time); around 6pm did worst (75%).
- Tuesday was the most reliable day to fly (87% on time) and Sunday the least (72%).
- The largest source of delay minutes was air traffic control & airport congestion (33%).
Which airline is most on time from IAH to FLL?
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 | 85% | 0.7% | 10 min | 4.9% | 1,830 |
| Spirit Airlines | 72% | 1.9% | 22 min | 12.8% | 789 |
| Frontier Airlines | 59% | 4.5% | 22 min | 11.7% | 134 |
| JetBlue | 36% | 2.9% | 51 min | 25.8% | 68 |
Best time of day to fly
On-time arrival rate by scheduled departure hour (local time).
- 5am81%214 flights
- 6am83%71 flights
- 7am83%354 flights
- 8am78%152 flights
- 9am83%184 flights
- 10am76%217 flights
- 11am78%69 flights
- 12pm83%277 flights
- 1pm63%43 flights
- 2pm84%295 flights
- 4pm75%409 flights
- 5pm83%35 flights
- 6pm75%364 flights
- 7pm77%113 flights
Best day of the week
On-time arrival rate by day of departure.
- Monday80%1.4% cancelled
- Tuesday87%0.8% cancelled
- Wednesday84%0.5% cancelled
- Thursday78%0.9% cancelled
- Friday76%1.4% cancelled
- Saturday77%1.5% cancelled
- Sunday72%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.
- Air traffic control & airport congestion33%
- Airline (crew, maintenance, cleaning, fueling)33%
- Late-arriving aircraft31%
- Extreme weather3%
- Security0%
Why flights are cancelled
Share of cancellations by reason.
- Airline (crew, maintenance, cleaning, fueling)40%
- Extreme weather40%
- Air traffic control & airport congestion20%
- Security0%
IAH to FLL: common questions
- How often are IAH to FLL flights on time?
- 79% 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 Houston to Fort Lauderdale cancelled?
- 1.2% of scheduled flights were cancelled (35 of 2,821).
- 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 66 min behind schedule on average, and 7.9% of flights were an hour or more late.
- How long is taxi time at IAH?
- Flights on this route spent 19 min taxiing from the gate to takeoff on average.
Related routes
Return trip: FLL to IAH — 81% on time
More flights from Houston
Data: U.S. DOT Bureau of Transportation Statistics, Aug 2025 – Jul 2026 (12 months). Latest month published by BTS: July 2026. Route: IAH → FLL, nonstop flights by US airlines that report to the DOT. How we calculate this.