Historical on-time performance
Houston to Fort Lauderdale
965 miData through May 2026Source: US DOT · BTS
Flights on IAH–FLL arrive on time 79% of the time over the last 12 months.
On-time rate79%arrived within 15 min
p90 delay40 min1 in 10 flights is worse (tail risk)
Cancelled1.1%of scheduled flights
based on 2,754 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).
By airline
How each carrier compares
- United AirlinesbestOn-time84%Medianon timep9025 minCancel0.7%Flights1,802
- Spirit AirlinesOn-time70%Medianon timep9070 minCancel1.7%Flights952
Why flights run late
Delay causes
- Airline35%
- Weather5%
- Air traffic (NAS)32%
- Late aircraft28%
- Security0%
Most delay minutes here are attributed to Airline.
When flights don't go
Why flights were cancelled
- Airline38%
- Weather38%
- Air traffic (NAS)24%
- Security0%
Most cancellations here are attributed to Airline. Shares are among 29 cancellations with a reported cause (BTS reports causes from June 2003).
Over time
On-time trend
By season
On-time rate by month
When to fly
Best time to fly IAH → FLL
All airlines · rolling 36 months (2023-06 .. 2026-05).
Best time of day
Mornings are the most reliable time of day to fly this route — 85% on time.
- Mornings85% on time · p90 20 min · 2,634 flights
- Middays76% on time · p90 50 min · 1,532 flights
- Overnights73% on time · p90 75 min · 233 flights
- Evenings69% on time · p90 70 min · 2,081 flights
- Afternoons69% on time · p90 75 min · 1,430 flights
Best day of week
Tuesdays are the most reliable day to fly this route — 83% on time.
- Tuesdays83% on time · p90 30 min · 1,022 flights
- Wednesdays80% on time · p90 35 min · 1,065 flights
- Mondays75% on time · p90 45 min · 1,165 flights
- Saturdays75% on time · p90 60 min · 1,136 flights
- Fridays75% on time · p90 60 min · 1,172 flights
- Thursdays74% on time · p90 55 min · 1,176 flights
- Sundays70% on time · p90 65 min · 1,174 flights
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