Historical on-time performance
New York to Houston
1,417 miData through Dec 2025Source: US DOT · BTS
Flights on JFK–IAH arrive on time 71% of the time over the last 12 months.
On-time rate71%arrived within 15 min
p90 delay55 min1 in 10 flights is worse (tail risk)
Cancelled1.9%of scheduled flights
based on 154 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).
By airline
How each carrier compares
Too close to call — no single carrier is clearly more on-time here.
- Delta Air LinesOn-time71%Medianon timep9065 minCancel4.8%Flights62
- JetBlue AirwaysOn-time72%Medianon timep9045 minCancel0.0%Flights92
Why flights run late
Delay causes
- Airline34%
- Weather16%
- Air traffic (NAS)24%
- Late aircraft25%
- Security0%
Most delay minutes here are attributed to Airline.
Over time
On-time trend
By season
On-time rate by month
When to fly
Best time to fly JFK → IAH
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 — 74% on time.
- Mornings74% on time · p90 50 min · 611 flights
- Middays66% on time · p90 80 min · 348 flights
- Afternoons53% on time · p90 95 min · 70 flights · limited
Best day of week
On-time rates are fairly even by day on this route — ranging from 66% to 76% on time.
- Wednesdays76% on time · p90 35 min · 147 flights · limited
- Mondays72% on time · p90 65 min · 155 flights · limited
- Tuesdays71% on time · p90 70 min · 147 flights · limited
- Sundays70% on time · p90 90 min · 148 flights · limited
- Fridays66% on time · p90 75 min · 154 flights · limited
- Saturdays66% on time · p90 80 min · 137 flights · limited
- Thursdays66% on time · p90 60 min · 151 flights · limited
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