United Airlines is the most reliable airline on the FLL to IAH route with a 83% on-time rate, compared to Frontier Airlines at 45%. Based on 5,522 flights tracked.
Source: Bureau of Transportation Statistics. Updated October 2026.Best Airline: FLL to IAH
Fort Lauderdale to Houston — airline reliability comparison
On-Time Rate by Airline
United Airlines83%
Spirit Airlines68%
JetBlue Airways67%
Frontier Airlines45%
FLL to IAH Airline Comparison
| Airline | On-Time % | Cancel % | Avg Delay | Flights |
|---|---|---|---|---|
| United AirlinesUABest | 83% | 1.3% | 81m | 5,522 |
| Spirit AirlinesNK | 68% | 1.5% | 67m | 3,610 |
| JetBlue AirwaysB6 | 67% | 4.3% | 66m | 69 |
| Frontier AirlinesF9Worst | 45% | 3.2% | 79m | 112 |
Route Overview
77%
Overall On-Time
73m
Avg Delay
1.4%
Cancel Rate
9,337
Total Flights
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Data last updated October 2026. Source: Bureau of Transportation Statistics.