$533 Cheap Flights from Rock Springs (RKS) to Greenville (GSP)

View $533 flight on Sat, Jul 19, 2025Opens in a new window

Popular airlines from Rock Springs, WY (RKS-Sweetwater County) to Greenville-Spartanburg Intl. Airport (GSP)

Cheap Flights from Rock Springs to Greenville (RKS-GSP)

Prices were available within the past 7 days and start at $533 for one-way flights and $374 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

United
Tue, Nov 11 - Thu, Nov 27
RKS
Rock Springs
GSP
Greenville
$374 Roundtrip, found 6 days ago
$374
Roundtrip
found 6 days ago
Select United flight, departing Tue, Nov 11 from Rock Springs to Greenville, returning Thu, Nov 27, priced at $374 found 6 days ago
United
Thu, Nov 27 - Wed, Dec 3
RKS
Rock Springs
GSP
Greenville
$379 Roundtrip, found 6 days ago
$379
Roundtrip
found 6 days ago
Select United flight, departing Thu, Nov 27 from Rock Springs to Greenville, returning Wed, Dec 3, priced at $379 found 6 days ago
United
Tue, Nov 4 - Wed, Nov 19
RKS
Rock Springs
GSP
Greenville
$393 Roundtrip, found 6 days ago
$393
Roundtrip
found 6 days ago
Select United flight, departing Tue, Nov 4 from Rock Springs to Greenville, returning Wed, Nov 19, priced at $393 found 6 days ago
United
Mon, Nov 3 - Tue, Nov 18
RKS
Rock Springs
GSP
Greenville
$399 Roundtrip, found 6 days ago
$399
Roundtrip
found 6 days ago
Select United flight, departing Mon, Nov 3 from Rock Springs to Greenville, returning Tue, Nov 18, priced at $399 found 6 days ago
United
Tue, Nov 11 - Sun, Nov 23
RKS
Rock Springs
GSP
Greenville
$404 Roundtrip, found 6 days ago
$404
Roundtrip
found 6 days ago
Select United flight, departing Tue, Nov 11 from Rock Springs to Greenville, returning Sun, Nov 23, priced at $404 found 6 days ago
United
Tue, Nov 4 - Tue, Nov 18
RKS
Rock Springs
GSP
Greenville
$418 Roundtrip, found 6 days ago
$418
Roundtrip
found 6 days ago
Select United flight, departing Tue, Nov 4 from Rock Springs to Greenville, returning Tue, Nov 18, priced at $418 found 6 days ago
United
Tue, Nov 4 - Mon, Nov 17
RKS
Rock Springs
GSP
Greenville
$424 Roundtrip, found 6 days ago
$424
Roundtrip
found 6 days ago
Select United flight, departing Tue, Nov 4 from Rock Springs to Greenville, returning Mon, Nov 17, priced at $424 found 6 days ago
United
Fri, Nov 7 - Sun, Nov 23
RKS
Rock Springs
GSP
Greenville
$429 Roundtrip, found 6 days ago
$429
Roundtrip
found 6 days ago
Select United flight, departing Fri, Nov 7 from Rock Springs to Greenville, returning Sun, Nov 23, priced at $429 found 6 days ago
United
Thu, Nov 6 - Wed, Nov 19
RKS
Rock Springs
GSP
Greenville
$433 Roundtrip, found 6 days ago
$433
Roundtrip
found 6 days ago
Select United flight, departing Thu, Nov 6 from Rock Springs to Greenville, returning Wed, Nov 19, priced at $433 found 6 days ago
United
Thu, Nov 6 - Thu, Nov 20
RKS
Rock Springs
GSP
Greenville
$439 Roundtrip, found 6 days ago
$439
Roundtrip
found 6 days ago
Select United flight, departing Thu, Nov 6 from Rock Springs to Greenville, returning Thu, Nov 20, priced at $439 found 6 days ago
Flights from Rock Springs (RKS) to Greenville (GSP)
Origin airport
Sweetwater County
Destination airport
Greenville-Spartanburg Intl.
Roundtrip price
$373
Distance
1521 mi

Rock Springs to Greenville Flights

The cheapest times to fly from Rock Springs to Greenville

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Rock Springs to Greenville are during the month of November. You can find some of the cheapest flights from Rock Springs to Greenville with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Rock Springs to Greenville

Sunday is one of the best days to book for cheap flights from Rock Springs to Greenville: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Rock Springs to Greenville

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Rock Springs to Greenville in 2025. You can also book with separate airlines for your outbound and return journeys, from $533 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Rock Springs to Greenville flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Rock Springs to Greenville airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Frequently asked questions

How much does a flight from Sweetwater County Airport (RKS) to Greenville-Spartanburg Intl. Airport (GSP) cost?
Discover the latest flight deals from RKS to GSP by entering your preferred travel dates and searching on Expedia. Easily compare prices by departure date if you have flexibility with your schedule and use handy filters to explore prices for your preferred journey. As a member of One Key™, our free loyalty program, you can use Price Tracking to watch fares and receive notifications if prices go up or down.
What is the cheapest month to fly from RKS to GSP?
The cheapest flights from RKS to GSP are usually during off-peak season, when demand is lower. To save money, avoid flying during public holidays, school breaks and major local events.
What is the cheapest airline that flies from RKS to GSP?
Use the filter tool on Expedia to compare airlines and find the cheapest carrier that'll take you from RKS to GSP. Sort your results by "Price (lowest to highest)" to snap up a great deal.
How many flights per day from Sweetwater County Airport (RKS) to Greenville-Spartanburg Intl. Airport (GSP)?
You'll need to catch a flight with a layover if you're traveling from Sweetwater County Airport (RKS) to Greenville-Spartanburg Intl. Airport (GSP). There are no daily direct flights on this route. However, simply filter your search to include one or more stops to find the best option for your trip.
What day of the week has the most flights from RKS to GSP?
You'll usually find Tuesday the quietest day for flights, while Fridays tend to be the busiest.* However this can vary from season to season and during public holidays or peak travel times.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Sweetwater County Airport (RKS) to Greenville-Spartanburg Intl. Airport (GSP)?
To land at Greenville-Spartanburg Intl. Airport (GSP) without delays, select a flight that leaves from Sweetwater County Airport (RKS) before 3 PM. The chance of cancellations is 22% higher, on average, for departures after this time.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
Is it cheaper to buy a plane ticket from Sweetwater County Airport (RKS) to Greenville-Spartanburg Intl. Airport (GSP) last-minute?
Holding off until just before your departure to book a ticket from RKS to GSP generally means paying more. While you may find some last-minute offers, there's no guarantee. Keep your travel plans flexible for the best chance of snagging a bargain.
Is it cheaper to book a RKS to GSP flight and hotel package?
Compared with arranging hotels and flights separately, booking a RKS to GSP flight and hotel package with Expedia could result in significant savings. Better yet, having it all in one place will take the hassle out of travel planning. Just secure your flights and choose from our wide range of hotels, then tailor your trip with extras like activities, tours and car rentals.
Can I cancel or change the date of my flight from Sweetwater County Airport (RKS) to Greenville-Spartanburg Intl. Airport (GSP)?
If you reserved your RKS to GSP flight within the last 24 hours, you may be able to cancel or modify it without any fees. Depending on the airline and the type of ticket you purchased, additional charges may apply for changes beyond this timeframe. Airline policies and contact information can be found in your itinerary or confirmation email. Or, head to our Customer Service portal for more information.

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*Available to One Key members.