$198 Cheap Flights from Denver (DEN) to Rock Springs (RKS)

View $198 flight on Tue, Dec 23, 2025Opens in a new window

Popular airlines from Denver Intl. Airport (DEN) to Rock Springs, WY (RKS-Sweetwater County)

Cheap Flights from Denver to Rock Springs (DEN-RKS)

Prices were available within the past 7 days and start at $198 for one-way flights and $241 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

United
Tue, Dec 9 - Tue, Dec 16
DEN
Denver
RKS
Rock Springs
$241 Roundtrip, found 5 days ago
$241
Roundtrip
found 5 days ago
Select United flight, departing Tue, Dec 9 from Denver to Rock Springs, returning Tue, Dec 16, priced at $241 found 5 days ago
United
Sat, Dec 20 - Tue, Dec 23
DEN
Denver
RKS
Rock Springs
$261 Roundtrip, found 2 days ago
$261
Roundtrip
found 2 days ago
Select United flight, departing Sat, Dec 20 from Denver to Rock Springs, returning Tue, Dec 23, priced at $261 found 2 days ago
United
Sun, Dec 21 - Fri, Jan 9
DEN
Denver
RKS
Rock Springs
$262 Roundtrip, found 4 days ago
$262
Roundtrip
found 4 days ago
Select United flight, departing Sun, Dec 21 from Denver to Rock Springs, returning Fri, Jan 9, priced at $262 found 4 days ago
United
Sun, Dec 21 - Fri, Jan 9
DEN
Denver
RKS
Rock Springs
$263 Roundtrip, found 6 days ago
$263
Roundtrip
found 6 days ago
Select United flight, departing Sun, Dec 21 from Denver to Rock Springs, returning Fri, Jan 9, priced at $263 found 6 days ago
United
Mon, Dec 8 - Mon, Dec 15
DEN
Denver
RKS
Rock Springs
$280 Roundtrip, found 6 days ago
$280
Roundtrip
found 6 days ago
Select United flight, departing Mon, Dec 8 from Denver to Rock Springs, returning Mon, Dec 15, priced at $280 found 6 days ago
United
Sun, Dec 21 - Fri, Jan 9
DEN
Denver
RKS
Rock Springs
$282 Roundtrip, found 4 days ago
$282
Roundtrip
found 4 days ago
Select United flight, departing Sun, Dec 21 from Denver to Rock Springs, returning Fri, Jan 9, priced at $282 found 4 days ago
United
Sun, Dec 21 - Fri, Jan 9
DEN
Denver
RKS
Rock Springs
$283 Roundtrip, found 6 days ago
$283
Roundtrip
found 6 days ago
Select United flight, departing Sun, Dec 21 from Denver to Rock Springs, returning Fri, Jan 9, priced at $283 found 6 days ago
United
Sat, Dec 20 - Fri, Dec 26
DEN
Denver
RKS
Rock Springs
$291 Roundtrip, found 2 days ago
$291
Roundtrip
found 2 days ago
Select United flight, departing Sat, Dec 20 from Denver to Rock Springs, returning Fri, Dec 26, priced at $291 found 2 days ago
United
Sun, Dec 21 - Fri, Jan 9
DEN
Denver
RKS
Rock Springs
$301 Roundtrip, found 4 days ago
$301
Roundtrip
found 4 days ago
Select United flight, departing Sun, Dec 21 from Denver to Rock Springs, returning Fri, Jan 9, priced at $301 found 4 days ago
United
Sun, Dec 21 - Fri, Jan 9
DEN
Denver
RKS
Rock Springs
$312 Roundtrip, found 4 days ago
$312
Roundtrip
found 4 days ago
Select United flight, departing Sun, Dec 21 from Denver to Rock Springs, returning Fri, Jan 9, priced at $312 found 4 days ago
United
Tue, Dec 23 - Fri, Dec 26
DEN
Denver
RKS
Rock Springs
$315 Roundtrip, found 6 hours ago
$315
Roundtrip
found 6 hours ago
Select United flight, departing Tue, Dec 23 from Denver to Rock Springs, returning Fri, Dec 26, priced at $315 found 6 hours ago
United
Tue, Dec 23 - Tue, Jan 6
DEN
Denver
RKS
Rock Springs
$318 Roundtrip, found 4 days ago
$318
Roundtrip
found 4 days ago
Select United flight, departing Tue, Dec 23 from Denver to Rock Springs, returning Tue, Jan 6, priced at $318 found 4 days ago
United
Tue, Dec 2 - Thu, Dec 18
DEN
Denver
RKS
Rock Springs
$330 Roundtrip, found 3 days ago
$330
Roundtrip
found 3 days ago
Select United flight, departing Tue, Dec 2 from Denver to Rock Springs, returning Thu, Dec 18, priced at $330 found 3 days ago

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Alternative airports near Rock Springs

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

Select flight to Sweetwater County RKS. Cheapest and Closest option available. Average driving time to city center is 14 minutes. Flights from $261
RKS
Sweetwater County
CheapestClosest
Average driving time to city center14 min
Flights from $261
Flights from Denver (DEN) to Rock Springs (RKS)
Origin airport
Denver Intl.
Destination airport
Sweetwater County
Airlines serving
United
Roundtrip price
$240
Distance
260 mi
Average flight time
1 hour 10 mins

Denver to Rock Springs Flights

The cheapest times to fly from Denver 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 Denver to Rock Springs are during the month of December. You can find some of the cheapest flights from Denver to Rock Springs with Expedia's search tool and vast selection of airlines.

 

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

Sunday is one of the best days to book for cheap flights from Denver 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 Denver 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 Denver to Rock Springs in 2026. You can also book with separate airlines for your outbound and return journeys, from $198 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 Denver 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 Denver 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 Denver Intl. Airport (DEN) to Sweetwater County Airport (RKS) cost?
Secure a cheap one-way flight from $198 or cheap return flight from $241 from Denver Intl. Airport (DEN) to Sweetwater County Airport (RKS) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to find our cheapest flight deals on this route.
What is the cheapest month to fly from Denver Intl. Airport (DEN) to Sweetwater County Airport (RKS)?
Flying in December can help you save, as it's the cheapest month for flights between DEN and RKS. You'll often find the lowest fares during the off-season.
Which airlines fly direct from Denver Intl. Airport (DEN) to Sweetwater County Airport (RKS)?
You can fly straight from Denver Intl. Airport (DEN) to Sweetwater County Airport (RKS) on a United Airlines flight.
What is the cheapest airline that flies from Denver Intl. Airport (DEN) to Sweetwater County Airport (RKS)?
Expedia's filter tool lets you easily compare different airlines, departure times and fares all in one place. Tailor the search to your trip, then sort by "Price (lowest to highest)" to find out which carrier offers the cheapest DEN to RKS flight.
How many flights per day from Denver Intl. Airport (DEN) to Sweetwater County Airport (RKS)?
When taking off from Denver Intl. Airport (DEN), you'll have your pick from an average of 2 daily direct flights to Sweetwater County Airport (RKS).
What are the most popular departure times for flights from Denver Intl. Airport (DEN) to Sweetwater County Airport (RKS)?
Flights between DEN and RKS are busiest at 12 PM. If you'd like a more relaxed atmosphere and potentially cheaper tickets, look for a departure outside the usual busy windows.
What day of the week has the most flights from DEN to RKS?
If you depart on a Monday, you'll get the greatest range of choices for flights from Denver Intl. Airport (DEN) to Sweetwater County Airport (RKS).
What is the earliest flight from Denver Intl. Airport (DEN) to Sweetwater County Airport (RKS)?
Take the earliest flight at around 12:08PM UTC-7, leaving from Denver Intl. Airport (DEN). You'll be traveling for about 1h 15m, landing at Sweetwater County Airport (RKS) at approximately 1:23PM UTC-7.
How long does it take to fly from Denver Intl. Airport (DEN) to Sweetwater County Airport (RKS)?
It takes approximately 1 hour and 15 minutes to cover the 260 mi from DEN to RKS.
What airline has the least delays from DEN to RKS?
With 83% of journeys usually arriving on time, United Airlines has the best on-time performance for nonstop flights from Denver Intl. Airport (DEN) to Sweetwater County Airport (RKS). To check your flight status and receive notifications about any changes, simply head to the Expedia App.
What is the best time to fly from Denver Intl. Airport (DEN) to Sweetwater County Airport (RKS)?
Book a flight from Denver Intl. Airport (DEN) to Sweetwater County Airport (RKS) that leaves before 3 PM to reduce the likelihood of delays and cancellations. Departures after this time are on average 22% more likely to be canceled.**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.
What airports do you fly into for Rock Springs from Denver Intl. Airport (DEN)?
Sweetwater County Airport (RKS) is the only airport in Rock Springs with direct flights from Denver Intl. Airport (DEN). Check out the available options and find affordable fares on Expedia.
Is it cheaper to buy a plane ticket from Denver Intl. Airport (DEN) to Sweetwater County Airport (RKS) last-minute?
Last-minute fares from DEN to RKS are usually more expensive. To lock in the best prices, start looking for flights well in advance. That said, if your travel plans are flexible, it's possible to find a cheap fare right before your journey.
Is it cheaper to book a DEN to RKS flight and hotel package?
Securing a DEN to RKS flight and hotel package tends to be cheaper than booking separately. With Expedia, you can enjoy the convenience of organizing your travels all in one place. Select from our wide range of stays and then add car rentals, activities and flights to your booking. Bundle everything together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Denver Intl. Airport (DEN) to Sweetwater County Airport (RKS)?
In most cases, you're able to reschedule or cancel your DEN to RKS flight. However, there may be additional fees, especially if your booking was made more than 24 hours ago. Double-check your itinerary for the airline's fees and guidelines on flight changes, or if you'd like further details, go to our Customer Service portal.

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*Available to One Key members.