Greenville (GSP) to Houston (IAH) flights
One airline flies nonstop from Greenville (GSP) to Houston (IAH): United Airlines. The two airports are 836 miles (1,346 km) apart. United Airlines is in Star Alliance. There are also 18 ways to fly it with one stop, through Atlanta, Nashville and Charlotte and more.
Airlines flying nonstop from GSP to IAH
- United AirlinesStar Alliance · bookable with 13 programsWho books it
Book GSP to IAH with points
Loyalty programs that can book at least one of the nonstop airlines, from the Award Booking Guide.
- Air Canada AeroplanBooks United Airlines
- Air New Zealand AirpointsBooks United Airlines
- ANA Mileage ClubBooks United Airlines
- Avianca LifeMilesBooks United Airlines
- Emirates SkywardsBooks United Airlines
- EVA Air Infinity MileageLandsBooks United Airlines
- JetBlue TrueBlueBooks United Airlines
- Lufthansa Miles & MoreBooks United Airlines
- Singapore Airlines KrisFlyerBooks United Airlines
- TAP Miles&GoBooks United Airlines
- Thai Royal Orchid PlusBooks United Airlines
- Turkish Airlines Miles&SmilesBooks United Airlines
- United MileagePlusBooks United Airlines
GSP to IAH with one stop
18 connections, most direct first. 2-stop routings and flight times are in Routes with Pro.
- Via Atlanta (ATL)Delta Air Lines the whole way
- Via Nashville (BNA)Southwest Airlines, then United Airlines
- Via Charlotte (CLT)American Airlines the whole way
- Via Dallas (DFW)American Airlines the whole way
- Via Cincinnati (CVG)Breeze Airways, then United Airlines
- Via Tampa (TPA)Breeze Airways, then United Airlines and Frontier Airlines
- Via Orlando (MCO)Breeze Airways, then United Airlines and Frontier Airlines
- Via Sarasota (SRQ)Allegiant Air, then United Airlines
- Via Columbus (CMH)Breeze Airways, then United Airlines
- Via Fort Myers (RSW)Breeze Airways, then United Airlines
- Via Chicago (ORD)American Airlines and United Airlines the whole way
- Via Pittsburgh (PIT)Breeze Airways, then United Airlines
- Via Dulles (IAD)United Airlines the whole way
- Via Detroit (DTW)Delta Air Lines the whole way
- Via Fort Lauderdale (FLL)Allegiant Air and Breeze Airways, then United Airlines, Frontier Airlines and 1 more
GSP to IAH: common questions
Which airlines fly nonstop from GSP to IAH?
United Airlines (Star Alliance) flies nonstop from Greenville (GSP) to Houston (IAH).
How far is Greenville from Houston by plane?
Greenville (GSP) and Houston (IAH) are 836 miles (1,346 km) apart along the great circle, the shortest path a flight can take. Connections add distance on top.
Which points programs can book GSP to IAH award flights?
13 programs can book at least one of the nonstop airlines: Air Canada Aeroplan, Air New Zealand Airpoints, ANA Mileage Club, Avianca LifeMiles, Emirates Skywards, EVA Air Infinity MileageLands, JetBlue TrueBlue, Lufthansa Miles & More and 5 more. Which flights each can book depends on its partners, so check the airline before you transfer points.
How many miles does GSP to IAH cost?
It depends on the program: each prices the route from its own chart or dynamically. The Award Flight Pricer compares 30+ programs for GSP to IAH with taxes and fees.
Where can I connect between Greenville and Houston?
The most direct connections are through Atlanta (ATL), Nashville (BNA), Charlotte (CLT), Dallas (DFW) and Cincinnati (CVG). On 8 of them the same airline flies both flights, for example Delta Air Lines through Atlanta.
More routes
Routes are scheduled nonstop flights. The route data is refreshed monthly; this list was last checked November 11, 2026. Seasonal routes and new launches can be missing or end early, so confirm with the airline before you book. Distances are great-circle, the shortest path between the two airports.