$274 Cheap Flights from Rock Springs (RKS) to Boise (BOI)

View $274 flight on Thu, Jul 17, 2025Opens in a new window

Popular airlines from Rock Springs, WY (RKS-Sweetwater County) to Boise Airport (BOI)

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Cheap Flights from Rock Springs to Boise (RKS-BOI)

Prices were available within the past 7 days and start at $274 for one-way flights and $218 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

United
Fri, Aug 15 - Sun, Aug 17
RKS
Rock Springs
BOI
Boise
$218 Roundtrip, found 2 hours ago
$218
Roundtrip
found 2 hours ago
Select United flight, departing Fri, Aug 15 from Rock Springs to Boise, returning Sun, Aug 17, priced at $218 found 2 hours ago
United
Mon, Jul 28 - Thu, Aug 7
RKS
Rock Springs
BOI
Boise
$278 Roundtrip, just found
$278
Roundtrip
just found
Select United flight, departing Mon, Jul 28 from Rock Springs to Boise, returning Thu, Aug 7, priced at $278 just found
United
Mon, Jul 14 - Sat, Jul 19
RKS
Rock Springs
BOI
Boise
$283 Roundtrip, found 2 days ago
$283
Roundtrip
found 2 days ago
Select United flight, departing Mon, Jul 14 from Rock Springs to Boise, returning Sat, Jul 19, priced at $283 found 2 days ago
United
Wed, Jul 9 - Fri, Jul 25
RKS
Rock Springs
BOI
Boise
$298 Roundtrip, found 2 days ago
$298
Roundtrip
found 2 days ago
Select United flight, departing Wed, Jul 9 from Rock Springs to Boise, returning Fri, Jul 25, priced at $298 found 2 days ago
United
Sat, Jul 12 - Fri, Jul 18
RKS
Rock Springs
BOI
Boise
$303 Roundtrip, found 23 hours ago
$303
Roundtrip
found 23 hours ago
Select United flight, departing Sat, Jul 12 from Rock Springs to Boise, returning Fri, Jul 18, priced at $303 found 23 hours ago
United
Mon, Jul 28 - Tue, Aug 5
RKS
Rock Springs
BOI
Boise
$308 Roundtrip, just found
$308
Roundtrip
just found
Select United flight, departing Mon, Jul 28 from Rock Springs to Boise, returning Tue, Aug 5, priced at $308 just found
United
Mon, Jul 28 - Mon, Aug 4
RKS
Rock Springs
BOI
Boise
$310 Roundtrip, found 4 hours ago
$310
Roundtrip
found 4 hours ago
Select United flight, departing Mon, Jul 28 from Rock Springs to Boise, returning Mon, Aug 4, priced at $310 found 4 hours ago
United
Fri, Jul 11 - Fri, Jul 18
RKS
Rock Springs
BOI
Boise
$313 Roundtrip, found 23 hours ago
$313
Roundtrip
found 23 hours ago
Select United flight, departing Fri, Jul 11 from Rock Springs to Boise, returning Fri, Jul 18, priced at $313 found 23 hours ago
United
Sat, Jul 12 - Wed, Jul 23
RKS
Rock Springs
BOI
Boise
$328 Roundtrip, found 23 hours ago
$328
Roundtrip
found 23 hours ago
Select United flight, departing Sat, Jul 12 from Rock Springs to Boise, returning Wed, Jul 23, priced at $328 found 23 hours ago
United
Fri, Jul 25 - Thu, Aug 14
RKS
Rock Springs
BOI
Boise
$338 Roundtrip, just found
$338
Roundtrip
just found
Select United flight, departing Fri, Jul 25 from Rock Springs to Boise, returning Thu, Aug 14, priced at $338 just found

Alternative airports near Boise

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Boise Airport BOI. Cheapest and Closest option available. Average driving time to city center is 8 minutes. Flights from $283
BOI
Boise Airport
CheapestClosest
Average driving time to city center8 min
Flights from $283
Flights from Rock Springs (RKS) to Boise (BOI)
Origin airport
Sweetwater County
Destination airport
Boise
Airlines serving
United
Roundtrip price
$218
Distance
388 mi

Rock Springs to Boise Flights

The cheapest times to fly from Rock Springs to Boise

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

 

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

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

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 Boise in 2025. You can also book with separate airlines for your outbound and return journeys, from $274 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 Boise 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 Boise 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 Boise Airport (BOI) cost?
Discover the latest flight deals from RKS to BOI 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 BOI?
The cheapest flights from RKS to BOI 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 BOI?
Use the filter tool on Expedia to compare airlines and find the cheapest carrier that'll take you from RKS to BOI. 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 Boise Airport (BOI)?
You'll need to book a flight with a layover when traveling from Sweetwater County Airport (RKS) to Boise Airport (BOI). There are no daily direct flights on this route. However, just filter your search to include one or more stops to discover an option that works for you.
What day of the week has the most flights from RKS to BOI?
Friday is typically the busiest day for flights, while Tuesday is often the quietest.* Keep in mind that flight schedules can vary based on a range of factors, such as the time of year and carrier.*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 Boise Airport (BOI)?
To arrive at Boise Airport (BOI) on time, opt for 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 hour.**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 Boise Airport (BOI) last-minute?
Holding off until just before your trip to book a ticket from RKS to BOI generally means paying more. While you might find some last-minute offers, they aren't always guaranteed. Be flexible with your travel plans to boost your chances of landing a bargain.
Is it cheaper to book a RKS to BOI flight and hotel package?
You'll generally save money by booking a RKS to BOI flight and hotel package compared to booking separately. In fact, you could save hundreds of dollars by bundling with Expedia. And it's simple to manage it all in one convenient place. Once you've chosen your ideal accommodations and flights, you can add extras such as activities, car rentals and tours.
Can I cancel or change the date of my flight from Sweetwater County Airport (RKS) to Boise Airport (BOI)?
Typically, you can cancel or modify your RKS to BOI flight. However, additional charges may apply, especially if you made your booking over 24 hours ago. Check your itinerary for the airline's policies and fees on flight changes, or if you'd like more details, head to our Customer Service portal.

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*Available to One Key members.