Historical on-time performance
Houston to Greenville
845 miData through May 2026Source: US DOT · BTS
Flights on HOU–GSP arrive on time 76% of the time over the last 12 months.
On-time rate76%arrived within 15 min
p90 delay35 min1 in 10 flights is worse (tail risk)
Cancelled0.0%of scheduled flights
based on 123 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).
By airline
How each carrier compares
- Southwest AirlinesOn-time76%Medianon timep9035 minCancel0.0%Flights123
Why flights run late
Delay causes
- Airline28%
- Weather9%
- Air traffic (NAS)18%
- Late aircraft46%
- Security0%
Most delay minutes here are attributed to Late aircraft.
When flights don't go
Why flights were cancelled
- Airline50%
- Weather50%
- Air traffic (NAS)0%
- Security0%
Most cancellations here are attributed to Airline. Shares are among 4 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 HOU → GSP
All airlines · rolling 36 months (2023-06 .. 2026-05).
Best day of week
On-time rates are fairly even by day on this route — ranging from 77% to 83% on time.
- Saturdays83% on time · p90 25 min · 107 flights · limited
- Sundays77% on time · p90 30 min · 107 flights · limited
Keep exploring