Historical on-time performance
Houston to Fort Lauderdale
965 miData through Dec 2025Source: US DOT · BTS
Flights on IAH–FLL arrive on time 80% of the time over the last 12 months.
On-time rate80%arrived within 15 min
p90 delay45 min1 in 10 flights is worse (tail risk)
Cancelled0.8%of scheduled flights
based on 2,730 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).
By airline
How each carrier compares
- United AirlinesbestOn-time81%Medianon timep9040 minCancel0.9%Flights1,633
- Spirit AirlinesOn-time78%Medianon timep9050 minCancel0.8%Flights1,097
Why flights run late
Delay causes
- Airline32%
- Weather8%
- Air traffic (NAS)33%
- Late aircraft27%
- Security0%
Most delay minutes here are attributed to Air traffic (NAS).
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 (2023-01 .. 2025-12).
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 · 2,531 flights
- Middays74% on time · p90 55 min · 1,557 flights
- Overnights74% on time · p90 75 min · 234 flights
- Evenings68% on time · p90 70 min · 2,220 flights
- Afternoons66% on time · p90 80 min · 1,177 flights
Best day of week
Tuesdays are the most reliable day to fly this route — 82% on time.
- Tuesdays82% on time · p90 35 min · 1,028 flights
- Wednesdays78% on time · p90 40 min · 1,052 flights
- Saturdays74% on time · p90 60 min · 1,113 flights
- Mondays74% on time · p90 55 min · 1,138 flights
- Fridays74% on time · p90 60 min · 1,126 flights
- Thursdays73% on time · p90 55 min · 1,123 flights
- Sundays69% on time · p90 70 min · 1,139 flights
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