Direct (nonstop) flights from Greenville to Houston
1 airline flys nonstop from Greenville-Spartanburg International (GSP) to George Bush Intcntl Houston (IAH). It's 837 miles (1,347 km), about 2h 35m in the air. Operated by United Airlines.
United Airlines
Route data last updated: May 31, 2026
Airlines with non-stop flights
UA
United Airlines
Alternative Routes
Other ways to fly from Greenville to Houston with one stop · direct emits 155 kg CO₂ per passenger
Looking for the return flight?
IAH → GSP: Flights from Houston to GreenvilleOther direct flights from Greenville
Direct flights from Houston (IAH)
Frequently Asked Questions
How long is the direct flight from Greenville to Houston?
A nonstop flight from Greenville (GSP) to Houston (IAH) takes approximately 2 hours and 35 minutes. The distance is 837 miles (1,347 km).
Which airlines fly nonstop from Greenville to Houston?
Just United Airlines.
Is there a nonstop flight from Greenville to Houston?
Yes. 1 airline: United Airlines.
How far is Greenville from Houston?
The flight distance from Greenville to Houston is 837 miles (1,347 km), measured as the great-circle (shortest air) distance. That's roughly the same distance as London to Madrid.
What type of aircraft flies from Greenville to Houston?
At 2h 35m, this route typically uses narrow-body or mid-range jets — Boeing 737 MAX or Airbus A320neo. Varies by airline.
What is the carbon footprint of a flight from Greenville to Houston?
Roughly 155 kg CO2 per passenger one-way. That's about the same as driving 775 km.
Is the return flight from Houston to Greenville also nonstop?
Yes — nonstop flights run both ways. Flight time may differ slightly due to wind patterns.
When is the cheapest time to fly from Greenville to Houston?
Midweek flights (Tue/Wed) outside holiday peaks are usually cheapest. 3-6 weeks ahead is a good window for this route. Use "Check Prices" above to compare.
How early should I arrive at Greenville-Spartanburg International for this flight?
1.5-2 hours for domestic. Add more time during holidays or busy travel weekends.