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Rock Springs

$341+ Cheap flights from Colorado to Rock Springs (RKS)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 12/18. Fares are subject to change and may not be available on all flights or dates of travel.
DEN — RKS
Jan 17 — Jan 241
Sat 1/17
Sat 1/24
1 adult, Economy
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Cheap flight deals from Colorado to Rock Springs

Cheapest flights from Colorado to Rock Springs
Explore the most affordable flight options available from Colorado to Rock Springs. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 18, 2025.

This United Airlines deal was found by Cheapflights users on 12/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/188:44 pmDEN - RKS
Nonstop1h 15mUnited Airlines
Sun 12/212:18 pmRKS - DEN
Nonstop1h 26mUnited Airlines
Deal found 12/16$341
This United Airlines deal was found by Cheapflights users on 12/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/1912:10 pmDEN - RKS
Nonstop1h 18mUnited Airlines
Thu 12/255:15 amRKS - DEN
Nonstop1h 36mUnited Airlines
Deal found 12/16$568
This United Airlines deal was found by Cheapflights users on 12/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/2312:10 pmDEN - RKS
Nonstop1h 18mUnited Airlines
Wed 12/245:15 amRKS - DEN
Nonstop1h 36mUnited Airlines
Deal found 12/16$595
This United Airlines deal was found by Cheapflights users on 12/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/218:44 pmDEN - RKS
Nonstop1h 15mUnited Airlines
Thu 12/252:18 pmRKS - DEN
Nonstop1h 26mUnited Airlines
Deal found 12/16$695
This United Airlines deal was found by Cheapflights users on 12/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/188:44 pmDEN - RKS
Nonstop1h 15mUnited Airlines
Fri 12/195:15 amRKS - DEN
Nonstop1h 36mUnited Airlines
Deal found 12/16$795

Find flight deals from Colorado to Rock Springs

Keep the following information in mind while searching for Colorado to Rock Springs flight deals. Data was last updated December 18, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$395
(United Airlines)
Provider with most accurate pricing for Denver Intl-Rock Springs Sweetwater County flight deals.
Search Deals
Provider most trusted by Cheapflights users for Denver Intl-Rock Springs Sweetwater County flights.
Search Deals
From Colorado to Rock Springs Sweetwater County
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Colorado to Rock Springs that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated December 18, 2025.
Use the filters below to find and compare flights from Colorado to Rock Springs that are best for you.

Fly from

Colorado

Fly to

Rock Springs

Route

Depart

Return

Price

DenverRock Springs

DEN - RKS

DENRKS

Denver Intl

Wed 1/28

9:00 pm-10:15 pm

Nonstop1h 15m

Rock Springs Sweetwater County

Sat 1/31

5:15 am-6:51 am

Nonstop1h 36m

$395

DenverRock Springs

DEN - RKS

DENRKS

Denver Intl

Sun 12/21

8:44 pm-9:59 pm

Nonstop1h 15m

$398

DenverRock Springs

DEN - RKS

DENRKS

Denver Intl

Sat 12/20

12:10 pm-1:28 pm

Nonstop1h 18m

$398

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/16

Best time to book a flight from Colorado to Rock Springs

Have a flexible travel schedule? Discover the best time to fly to Rock Springs from Colorado with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Colorado to Rock Springs

What is the cheapest time of day to fly from CO to RKS?

Find hourly flight availability from Colorado to Rock Springs. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated December 18, 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Colorado to Rock Springs as you normally would.

Related info for your journey

Find useful and relevant information for your journey from Colorado to Rock Springs. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly into for flights to Rock Springs from Colorado?

    For a flight from Colorado to Rock Springs, you will be flying into Sweetwater County. Rock Springs Sweetwater County (RKS) is just 7.1 mi from the center of the city.

  • How long is the flight from Colorado to Rock Springs?

    Airlines like United Airlines fly from Colorado to Rock Springs in about 1h 15m. The time it takes to get you to your destination is usually consistent. The distance between Colorado and Rock Springs is about 259 mi. Generally, flights for this route are nonstop.

  • What are the most reliable airlines from Colorado to Rock Springs?

    No one likes to see their flight delayed. When booking a flight from Colorado to Rock Springs consider choosing Copa Airlines (87%), SkyWest Airlines (85%) or United Airlines (85%) as they are the most reliable in getting you off to your destination on time.

  • Can I find deals for flights from Colorado to Rock Springs that include hotel bookings?

    Yes. In addition to deals on Colorado to Rock Springs flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Colorado to Rock Springs?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Colorado to Rock Springs.

  • Can I find deals for business class flights from Colorado to Rock Springs?

    Yes. Cheapflights offers flight deals from Colorado to Rock Springs by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

See more FAQs

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Top airline flying from Colorado to Rock Springs

Discover the top airline that operate flights from Colorado to Rock Springs. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated December 18, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$220Average$340FlexibilityNo cancel feeOn-time69%

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