Historical on-time performance
St. Thomas to Houston
2,070 miData through Dec 2025Source: US DOT · BTS
Flights on STT–IAH arrive on time 75% of the time over the last 12 months.
On-time rate75%arrived within 15 min
p90 delay35 min1 in 10 flights is worse (tail risk)
Cancelled0.0%of scheduled flights
based on 61 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).
By airline
How each carrier compares
- United AirlinesOn-time75%Medianon timep9035 minCancel0.0%Flights61
Why flights run late
Delay causes
- Airline8%
- Weather0%
- Air traffic (NAS)32%
- Late aircraft60%
- Security0%
Most delay minutes here are attributed to Late aircraft.
Over time
On-time trend
By season
On-time rate by month
When to fly
Best time to fly STT → IAH
All airlines · rolling 36 months (2023-01 .. 2025-12).
Best time of day
On-time rates are fairly even by time of day on this route — ranging from 78% to 82% on time.
- Afternoons82% on time · p90 25 min · 115 flights · limited
- Middays78% on time · p90 30 min · 298 flights
Best day of week
On-time rates are fairly even by day on this route — ranging from 78% to 79% on time.
- Saturdays79% on time · p90 30 min · 146 flights · limited
- Sundays78% on time · p90 30 min · 82 flights · limited
Advertisement
Keep exploring