$129 Cheap United flights Greenville (GSP) to Houston (IAH)

View $129 flight on Wed, Jan 28, 2026Opens in a new window

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$129 Cheap United flights Greenville (GSP) to Houston (IAH)

Prices were available within the past 7 days and start at $129 for one-way flights and $228 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

United
Sat, Sep 13 - Mon, Sep 15
GSP
Greenville
IAH
Houston
$228 Roundtrip, found 4 days ago
$228
Roundtrip
found 4 days ago
Select United flight, departing Sat, Sep 13 from Greenville to Houston, returning Mon, Sep 15, priced at $228 found 4 days ago
United
Sat, Dec 13 - Thu, Jan 1
GSP
Greenville
IAH
Houston
$244 Roundtrip, found 4 days ago
$244
Roundtrip
found 4 days ago
Select United flight, departing Sat, Dec 13 from Greenville to Houston, returning Thu, Jan 1, priced at $244 found 4 days ago
United
Thu, Oct 2 - Sat, Oct 11
GSP
Greenville
IAH
Houston
$250 Roundtrip, found 3 days ago
$250
Roundtrip
found 3 days ago
Select United flight, departing Thu, Oct 2 from Greenville to Houston, returning Sat, Oct 11, priced at $250 found 3 days ago
United
Wed, Sep 17 - Wed, Sep 24
GSP
Greenville
IAH
Houston
$257 Roundtrip, found 1 day ago
$257
Roundtrip
found 1 day ago
Select United flight, departing Wed, Sep 17 from Greenville to Houston, returning Wed, Sep 24, priced at $257 found 1 day ago
United
Mon, Sep 22 - Tue, Sep 23
GSP
Greenville
IAH
Houston
$264 Roundtrip, found 9 hours ago
$264
Roundtrip
found 9 hours ago
Select United flight, departing Mon, Sep 22 from Greenville to Houston, returning Tue, Sep 23, priced at $264 found 9 hours ago
United
Tue, Sep 9 - Wed, Sep 10
GSP
Greenville
IAH
Houston
$271 Roundtrip, found 1 day ago
$271
Roundtrip
found 1 day ago
Select United flight, departing Tue, Sep 9 from Greenville to Houston, returning Wed, Sep 10, priced at $271 found 1 day ago
Flights from Greenville (GSP) to Houston (IAH)
Origin airport
Greenville-Spartanburg Intl.
Destination airport
George Bush Intercontinental
Airlines serving
American Airlines, Delta, United
Popular airline
Delta
Distance
836 mi
Average flight time
1 hour 42 mins

Frequently asked questions

How much is a United Airlines flight from Greenville-Spartanburg Intl. Airport (GSP) to George Bush Intercontinental Airport (IAH)?
You'll find budget-friendly return United Airlines flights from $228 from GSP to IAH by sorting your results from "Price (lowest to highest)" on Expedia. Or search for deals from $129 for a one-way trip.**These prices were available on Expedia within the past 7 days, for flights departing within the next year. Prices and availability are subject to change. Additional terms apply.
What is the cheapest month to fly from GSP to IAH with United Airlines?
November is one of the cheapest months to jet away to Houston with United Airlines. You could also find great deals on one-way and return fares in February.
What is the cheapest time to book flights from Greenville-Spartanburg Intl. Airport (GSP) to George Bush Intercontinental Airport (IAH) with United Airlines?
For cheap United Airlines fares from Greenville-Spartanburg Intl. Airport (GSP) to George Bush Intercontinental Airport (IAH), start searching one to three months before your planned departure. Reserving domestic flights 34 to 86 days in advance could save you 25% compared to booking just 6 to 12 days ahead. The day you book can also influence the cost. Sunday is usually the cheapest, while Monday is often the most expensive for domestic flights. You can save 6% on average by booking your journey on a Sunday.**Ideal booking window recommendation is based on average round-trip ticket prices for January through November for 2024. Best day of the week to book recommendation is based on average round-trip ticket prices for January through October 2024. All data sourced from ARC's global airline sales database.
Does United Airlines fly nonstop from Greenville-Spartanburg Intl. Airport (GSP) to George Bush Intercontinental Airport (IAH)?
United Airlines has direct flights from Greenville-Spartanburg Intl. Airport (GSP) to George Bush Intercontinental Airport (IAH), with 7 weekly departures. Simply choose the "Nonstop" and "Airline" filters while searching on Expedia to show all direct United Airlines flights to IAH.
How long does it take to fly from GSP to IAH with United Airlines?
From wheels-up to touchdown, a nonstop United Airlines flight from Greenville-Spartanburg Intl. Airport (GSP) to George Bush Intercontinental Airport (IAH) typically takes 2h 48m.
What is the earliest United Airlines flight from GSP to IAH?
The earliest United Airlines flight from GSP to IAH departs at 6:35AM UTC-5, landing at 8:23AM UTC-6. If you'd like to jet off later in the day, the last United Airlines flight leaves GSP at 6:35AM UTC-5 and touches down at IAH at 8:23AM UTC-6. Flying earlier is often a wise choice as morning flights are less likely to experience cancellations.**Most reliable time of the day recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
What airports does United Airlines fly into in Houston?
George Bush Intercontinental Airport (IAH) is the primary Houston gateway for United Airlines flights from Greenville-Spartanburg Intl. Airport (GSP).
Why fly with United Airlines from GSP to IAH?
Fly from GSP to IAH with United Airlines and you'll enjoy a range of benefits including a rewarding loyalty program. When booking through Expedia as a United Mileage Plus and One Key™ member, you may also earn OneKeyCash™* to redeem on select future travel purchases.*OneKeyCash™ disclaimer - OneKeyCash™ is not redeemable for cash and can only be used on Expedia, Hotels.com and Vrbo.
What type of plane does United Airlines fly from Greenville-Spartanburg Intl. Airport (GSP) to George Bush Intercontinental Airport (IAH)?
Chances are you'll travel on a Boeing 737-700 for your United Airlines flight from Greenville-Spartanburg Intl. Airport (GSP) to George Bush Intercontinental Airport (IAH). However, you could end up on an alternative aircraft if operational demands require it.
Can I change or cancel my United Airlines flight from Greenville-Spartanburg Intl. Airport (GSP) to George Bush Intercontinental Airport (IAH)?
Changes are usually free within 24 hours of making a booking, but your airline may charge you after that. For more information about modifying your flights, go to your "Trips," select your flight and click on "Manage Booking." If you'd like the freedom to make changes without additional charges, apply the "Changes included" or "No cancel fee" filter when planning your trip.

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