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$291+ Cheap flights from Phoenix 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 4/2. Fares are subject to change and may not be available on all flights or dates of travel.
PHX — RKS
Feb 7 — Feb 141
Sat 2/7
Sat 2/14
1 adult, Economy
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Cheap flight deals from Phoenix to Rock Springs

Discover tips and strategies to find the most affordable flight options for your journey from Phoenix (PH1) to Rock Springs (RKS). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated January 8, 2026.

Round-trip from

$328
(United Airlines)
From Phoenix to Rock Springs Sweetwater County
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Cheapest flights from Phoenix to Rock Springs
Explore the most affordable flight options available from Phoenix to Rock Springs. Find the lowest fares from popular airlines and budget airlines, with prices last updated on January 8, 2026.

This United Airlines deal was found by Cheapflights users on 1/6. 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 4/26:00 amPHX - RKS
1 stop6h 30mUnited Airlines
Sun 4/52:15 pmRKS - PHX
2 stops8h 44mUnited Airlines
Deal found 1/6$291
This United Airlines deal was found by Cheapflights users on 1/6. 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 1/136:45 amPHX - RKS
1 stop6h 43mUnited Airlines
Tue 1/205:15 amRKS - PHX
2 stops10h 44mUnited Airlines
Deal found 1/6$324
This United Airlines deal was found by Cheapflights users on 1/7. 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 2/35:34 pmPHX - RKS
1 stop4h 41mUnited Airlines
Sat 2/75:15 amRKS - PHX
1 stop4h 39mUnited Airlines
Deal found 1/7$328

Cheapflights Fare Finder

 
Customize your flight search to find flights from Phoenix 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 January 8, 2026.
Use the filters below to find and compare flights from Phoenix to Rock Springs that are best for you.

Fly from

Phoenix

Fly to

Rock Springs

Route

Depart

Return

Price

PhoenixRock Springs

PHX - RKS

PHXRKS

Phoenix Sky Harbor Intl

Thu 4/2

6:00 am-1:30 pm

1 stop6h 30m

Rock Springs Sweetwater County

Sun 4/5

2:15 pm-9:59 pm

2 stops8h 44m

$291

PhoenixRock Springs

PHX - RKS

PHXRKS

Phoenix Sky Harbor Intl

Tue 1/13

6:45 am-1:28 pm

1 stop6h 43m

Rock Springs Sweetwater County

Tue 1/20

5:15 am-3:59 pm

2 stops10h 44m

$324

PhoenixRock Springs

PHX - RKS

PHXRKS

Phoenix Sky Harbor Intl

Tue 2/3

2:42 pm-10:15 pm

1 stop7h 33m

Rock Springs Sweetwater County

Sat 2/7

2:08 pm-7:45 pm

1 stop5h 37m

$328

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/6

Best time to book a flight from Phoenix to Rock Springs

Have a flexible travel schedule? Discover the best time to fly to Rock Springs from Phoenix 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 Phoenix to Rock Springs
No data available for this route at this time. Please check back soon.

Reviews of airlines servicing Rock Springs

Get insights into the airlines that provide service to Rock Springs. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Rock Springs. Reviews last updated January 8, 2026.
Read through reviews of airlines operating flights from Phoenix to Rock Springs, such as United Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
9,139 reviews

Boarding

7.7

Entertainment

7.1

Food

6.6

Comfort

7.3

Crew

8.1

Overall

7.4

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

IAD - TYS

It was a short flight on a small express plane, so no time for amenities. Quickly on, quickly off. No complaints.
United Airlines
7.4
Good
9,139 reviews
United Airlines
7.4
Good
9,139 reviews

Boarding

7.7

Entertainment

7.1

Food

6.6

Comfort

7.3

Crew

8.1

Overall

7.4

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

IAD - TYS

It was a short flight on a small express plane, so no time for amenities. Quickly on, quickly off. No complaints.

Related info for your journey

Find useful and relevant information for your journey from Phoenix 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 Phoenix?

    For a flight from Phoenix 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. Sweetwater County is the only Rock Springs airport and it handles 0 inbound flights from Phoenix per day. 1 airline has flights to Rock Springs Sweetwater County from Phoenix on a regular basis.

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

    Airlines like United Airlines fly from Phoenix to Rock Springs in about 6h 30m. The time it takes to get you to your destination can typically vary by up to . There are 586 mi between Phoenix and Rock Springs.

  • What is the cheapest airline to fly from Phoenix to Rock Springs round-trip?

    Our cheapest airline available from Phoenix to Rock Springs is United Airlines. Our recent data shows that you can find tickets from as low as $308 on this airline.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Phoenix 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 Phoenix to Rock Springs

Discover the top airline that operate flights from Phoenix 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 January 8, 2026.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$308Average$348FlexibilityNo cancel feeOn-time69%

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