Historical on-time performance
Houston to Greenville
845 miData through Dec 2025Source: US DOT · BTS
Flights on HOU–GSP arrive on time 79% of the time over the last 12 months.
On-time rate79%arrived within 15 min
p90 delay30 min1 in 10 flights is worse (tail risk)
Cancelled0.0%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
- Southwest AirlinesOn-time79%Medianon timep9030 minCancel0.0%Flights154
Why flights run late
Delay causes
- Airline27%
- Weather12%
- Air traffic (NAS)17%
- Late aircraft45%
- 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 HOU → GSP
All airlines · rolling 36 months (2023-01 .. 2025-12).
Best day of week
On-time rates are fairly even by day on this route — ranging from 77% to 84% on time.
- Saturdays84% on time · p90 20 min · 124 flights · limited
- Sundays77% on time · p90 30 min · 107 flights · limited
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