$253 Cheap Flights from Spokane (GEG) to Rock Springs (RKS)

View $253 flight on Sat, Aug 30, 2025Opens in a new window

Popular airlines from Spokane International Airport (GEG) to Rock Springs, WY (RKS-Sweetwater County)

  • Plan, book, fly with confidence

  • trending down icon

    Be in the know

    Get alerts if flight prices drop or rise*
  • bex rewards loyalty icon

    Book smarter

    Save up to 30% on select hotels after you book a flight*
  • one key icon

    Earn twice

    Earn your airline miles on top of our OneKeyCash
    Learn about One Key

Cheap Flights from Spokane to Rock Springs (GEG-RKS)

Prices were available within the past 7 days and start at $253 for one-way flights and $238 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

United
Fri, Nov 14 - Mon, Nov 17
GEG
Spokane
RKS
Rock Springs
$238 Roundtrip, found 6 days ago
$238
Roundtrip
found 6 days ago
Select United flight, departing Fri, Nov 14 from Spokane to Rock Springs, returning Mon, Nov 17, priced at $238 found 6 days ago
United
Tue, Sep 2 - Sat, Sep 6
GEG
Spokane
RKS
Rock Springs
$308 Roundtrip, found 12 hours ago
$308
Roundtrip
found 12 hours ago
Select United flight, departing Tue, Sep 2 from Spokane to Rock Springs, returning Sat, Sep 6, priced at $308 found 12 hours ago
United
Tue, Sep 2 - Mon, Sep 8
GEG
Spokane
RKS
Rock Springs
$389 Roundtrip, found 12 hours ago
$389
Roundtrip
found 12 hours ago
Select United flight, departing Tue, Sep 2 from Spokane to Rock Springs, returning Mon, Sep 8, priced at $389 found 12 hours ago
United
Fri, Sep 12 - Mon, Sep 15
GEG
Spokane
RKS
Rock Springs
$400 Roundtrip, found 11 hours ago
$400
Roundtrip
found 11 hours ago
Select United flight, departing Fri, Sep 12 from Spokane to Rock Springs, returning Mon, Sep 15, priced at $400 found 11 hours ago
United
Fri, Sep 12 - Mon, Sep 15
GEG
Spokane
RKS
Rock Springs
$422 Roundtrip, found 11 hours ago
$422
Roundtrip
found 11 hours ago
Select United flight, departing Fri, Sep 12 from Spokane to Rock Springs, returning Mon, Sep 15, priced at $422 found 11 hours ago
United
Tue, Sep 2 - Fri, Sep 5
GEG
Spokane
RKS
Rock Springs
$450 Roundtrip, found 12 hours ago
$450
Roundtrip
found 12 hours ago
Select United flight, departing Tue, Sep 2 from Spokane to Rock Springs, returning Fri, Sep 5, priced at $450 found 12 hours ago
United
Fri, Sep 5 - Mon, Sep 8
GEG
Spokane
RKS
Rock Springs
$459 Roundtrip, found 12 hours ago
$459
Roundtrip
found 12 hours ago
Select United flight, departing Fri, Sep 5 from Spokane to Rock Springs, returning Mon, Sep 8, priced at $459 found 12 hours ago
United
Fri, Sep 5 - Mon, Sep 8
GEG
Spokane
RKS
Rock Springs
$470 Roundtrip, found 12 hours ago
$470
Roundtrip
found 12 hours ago
Select United flight, departing Fri, Sep 5 from Spokane to Rock Springs, returning Mon, Sep 8, priced at $470 found 12 hours ago
United
Fri, Sep 12 - Mon, Sep 15
GEG
Spokane
RKS
Rock Springs
$497 Roundtrip, found 11 hours ago
$497
Roundtrip
found 11 hours ago
Select United flight, departing Fri, Sep 12 from Spokane to Rock Springs, returning Mon, Sep 15, priced at $497 found 11 hours ago
Alaska Airlines
Fri, Sep 12 - Mon, Sep 15
GEG
Spokane
RKS
Rock Springs
$683 Roundtrip, found 11 hours ago
$683
Roundtrip
found 11 hours ago
Select Alaska Airlines flight, departing Fri, Sep 12 from Spokane to Rock Springs, returning Mon, Sep 15, priced at $683 found 11 hours ago
Flights from Spokane (GEG) to Rock Springs (RKS)
Origin airport
Spokane Intl.
Destination airport
Sweetwater County
Airlines serving
United
Roundtrip price
$238
Distance
588 mi

Spokane to Rock Springs Flights

The cheapest times to fly from Spokane to Rock Springs

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 Spokane to Rock Springs are during the month of November. You can find some of the cheapest flights from Spokane to Rock Springs with Expedia's search tool and vast selection of airlines.

 

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

Sunday is one of the best days to book for cheap flights from Spokane to Rock Springs: 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 Spokane to Rock Springs

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 Spokane to Rock Springs in 2025. You can also book with separate airlines for your outbound and return journeys, from $253 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 Spokane to Rock Springs 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 Spokane to Rock Springs 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 Spokane Intl. Airport (GEG) to Sweetwater County Airport (RKS) cost?
Get a cheap one-way flight from $253 or cheap return flight from $238 from Spokane Intl. Airport (GEG) to Sweetwater County Airport (RKS) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to see our cheapest flight offers on this route.
What is the cheapest month to fly from Spokane Intl. Airport (GEG) to Sweetwater County Airport (RKS)?
Flying in November may help you find better deals, as it's the cheapest month for flights between GEG and RKS. You'll typically find the lowest fares during off-peak months.
What is the cheapest airline that flies from Spokane Intl. Airport (GEG) to Sweetwater County Airport (RKS)?
To find the cheapest airline flying from GEG to RKS, use Expedia's filter tool. Customize your search based on what matters most to you, such as preferred carriers and ideal departure window. You can then sort your results by "Price (lowest to highest)" to see the most affordable options first.
How many flights per day from Spokane Intl. Airport (GEG) to Sweetwater County Airport (RKS)?
Nonstop flights from Spokane Intl. Airport (GEG) to Sweetwater County Airport (RKS) aren't available daily, so you'll have to take a flight with a layover. Explore your options with Expedia's filter tool. Enter your travel dates and click on either "1 Stop" or "2+ Stops."
What day of the week has the most flights from GEG to RKS?
Friday is generally the busiest day for flights, while Tuesday is often the quietest.* Keep in mind that flight schedules can change depending on a range of factors, including the carrier and season.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Spokane Intl. Airport (GEG) to Sweetwater County Airport (RKS)?
Select a flight from Spokane Intl. Airport (GEG) to Sweetwater County Airport (RKS) that leaves before 3 PM to reduce the risk of cancellations. Departures later than this have a 22% higher chance of being canceled, on average.**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 Spokane Intl. Airport (GEG) to Sweetwater County Airport (RKS) last-minute?
Last-minute fares from GEG to RKS are typically more expensive. To lock in the lowest prices, start searching for flights well in advance. That being said, if you're flexible with your travel dates, you may land a cheap ticket just before your departure.
Is it cheaper to book a GEG to RKS flight and hotel package?
Securing a GEG to RKS flight and hotel package is generally cheaper than booking separately. With Expedia, you can enjoy the convenience of organizing your travels in one place. Select from our impressive range of hotels and then add flights, car rentals and activities to your booking. Bundle everything together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Spokane Intl. Airport (GEG) to Sweetwater County Airport (RKS)?
If you booked your GEG to RKS flight within the last 24 hours, you may be able to modify or cancel it without any fees. Depending on the airline and the type of fare 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, visit our Customer Service portal if you want more information.

Explore a world of travel with Expedia

*Available to One Key members.