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.

In terms of precipitation, rainfall in Rock Springs ranges from 0.5 - 1.2 inches per month. May is typically the wettest month, when rainfall can reach 1.2 in. January is typically the driest time to visit Rock Springs when rainfall is around 0.5 in.

If weather is an important factor for your trip to Rock Springs, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 69.8 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 21.2 F).

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

It’s generally more expensive to depart on a Wednesday, if you have to leave on this day you can still search on Cheapflights to find great options that meet your needs.

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

It’s optimal to fly from Phoenix to Rock Springs in the morning. By choosing this option you can save up to 10% on the cost of your flight, compared to a flight at noon.

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.

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.

$308+ Flights from Phoenix to Rock Springs

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Cheap flight deals from Phoenix to Rock Springs

Round-trip from	$308 (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 June 30, 2025.

Sat 11/111:55 amPHX - RKS

1 stop9h 06mUnited Airlines

Tue 11/42:05 pmRKS - PHX

1 stop7h 16mUnited Airlines

Deal found 6/29

$308

Best flights from Phoenix to Rock Springs
Discover carefully curated flight deals from Phoenix to Rock Springs that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated June 30, 2025.

Sat 11/111:55 amPHX - RKS

1 stop9h 06mUnited Airlines

Tue 11/42:05 pmRKS - PHX

1 stop7h 16mUnited Airlines

Deal found 6/29

$308

Last-minute flights from Phoenix to Rock Springs
Discover last-minute flight deals from Phoenix to Rock Springs. Data last updated June 30, 2025 and is based on user searches.

Fri 7/114:28 pmPHX - RKS

1 stop4h 45mUnited Airlines

Sun 7/135:33 amRKS - PHX

1 stop4h 16mUnited Airlines

Deal found 6/30

$659

Cheapflights Fare Finder

Use the filters below to find and compare flights from Phoenix to Rock Springs that are best for you.

Fly from

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Route

Depart

Return

Price

PhoenixRock Springs

PHX - RKS

PHXRKS

Phoenix Sky Harbor Intl

Sat 11/1

11:55 am-10:01 pm

1 stop9h 06m

Rock Springs Sweetwater County

Tue 11/4

2:05 pm-9:21 pm

1 stop7h 16m

$308

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/29

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

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

8,852 reviews

Reviews

1 / 20

2.0

Mediocre

Deb,Jan 2025

MKE - ORD

It was terrible! So much to say, but in a nutshell we used vouchers from United because our last trip with them was awful with many mishaps and errors made. Unfortunately, this trip was even worse!

United Airlines

7.4

Good

8,852 reviews

United Airlines

7.4

Good

8,852 reviews

Reviews

1 / 20

2.0

Mediocre

Deb,Jan 2025

MKE - ORD

It was terrible! So much to say, but in a nutshell we used vouchers from United because our last trip with them was awful with many mishaps and errors made. Unfortunately, this trip was even worse!

Related info for your journey

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.
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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Alternative routes for Phoenix to Rock Springs

Top airline flying from Phoenix to Rock Springs

Airline	Cheapest	Average	Flexibility	On-time
United Airlines	Cheapest$238	Average$383	FlexibilityNo cancel fee	On-time69%

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$308+ 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 11/1. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Phoenix to Rock Springs with Cheapflights

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2. Select your favorite providers

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Cheap flight deals from Phoenix to Rock Springs

Round-trip from

Find flight deals from Phoenix to Rock Springs

Cheapest flights from Phoenix to Rock SpringsExplore 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 June 30, 2025.

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 June 30, 2025.

Cheapflights Fare Finder

Use the filters below to find and compare flights from Phoenix to Rock Springs that are best for you.

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.

Cheapflights Insights

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

Reviews of airlines servicing Rock Springs

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.

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?

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

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

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

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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Phoenix to Rock Springs

See prices for flight routes from nearby airports that may be better suited for you.

Top airline flying from Phoenix to Rock Springs

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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 June 30, 2025.