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Rock Springs

$316+ Cheap flights from Portland to Rock Springs (PDX - RKS)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 9/29. Fares are subject to change and may not be available on all flights or dates of travel.
PDX — RKS
oct. 17 — oct. 241
vie. 10/17
vie. 10/24
1 adult, Economy
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Cheap flight deals from Portland to Rock Springs

Discover tips and strategies to find the most affordable flight options for your journey from Portland (PDX) 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 septiembre 17, 2025.

Round-trip from

$308
(United Airlines)
From Portland to Rock Springs Sweetwater County
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Cheapest flights from Portland to Rock Springs
Explore the most affordable flight options available from Portland to Rock Springs. Find the lowest fares from popular airlines and budget airlines, with prices last updated on septiembre 17, 2025.

This United Airlines deal was found by Cheapflights users on 9/17. 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.
lun. 9/2912:53 pmPDX - RKS
1 stop8h 14mUnited Airlines
mié. 10/12:00 pmRKS - PDX
1 stop8h 06mUnited Airlines
Deal found 9/17$685

Cheapflights Fare Finder

 
Customize your flight search to find flights from Portland 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 septiembre 17, 2025.
Use the filters below to find and compare flights from Portland to Rock Springs that are best for you.

Fly from

Portland

Fly to

Rock Springs

Route

Depart

Return

Price

PortlandRock Springs

PDX - RKS

PDXRKS

Portland

lun. 9/29

12:53 pm-10:07 pm

1 stop8h 14m

Rock Springs Sweetwater County

mié. 10/1

2:00 pm-9:06 pm

1 stop8h 06m

$685

PortlandRock Springs

PDX - RKS

PDXRKS

Portland

lun. 9/29

4:07 pm-10:07 pm

1 stop5h 00m

$316

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/15

Best time to book a flight from Portland to Rock Springs

Have a flexible travel schedule? Discover the best time to fly to Rock Springs from Portland 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 Portland to Rock Springs

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

Find hourly flight availability from Portland 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 septiembre 17, 2025.

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

Related info for your journey

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

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

    There are many flights that can get you from Portland to Rock Springs in 8h 14m. Fly via United Airlines to get the fastest option. Portland and Rock Springs are separated by a distance of 729 mi.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Portland 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.

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