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Rock Springs

$308+ Cheap flights from Portland to Rock Springs (PDX - 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 1/31. Fares are subject to change and may not be available on all flights or dates of travel.
PDX — RKS
Dec 20 — Dec 271
Sat 12/20
Sat 12/27
1 adult, Economy
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1. Tell us where you want to go

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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 November 20, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$308
(United Airlines)
Provider with most accurate pricing for Portland-Rock Springs Sweetwater County flight deals.
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Provider most trusted by Cheapflights users for Portland-Rock Springs Sweetwater County flights.
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From Portland to Rock Springs Sweetwater County
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Find flight deals from Portland to Rock Springs

Best flights from Portland to Rock Springs
Discover carefully curated flight deals from Portland to Rock Springs that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated November 20, 2025.

This United Airlines deal was found by Cheapflights users on 11/18. 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.
Sat 1/315:00 amPDX - RKS
1 stop7h 33mUnited Airlines
Wed 2/42:08 pmRKS - PDX
1 stop5h 02mUnited Airlines
Deal found 11/18$308

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 November 20, 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

Sat 1/31

5:00 am-1:33 pm

1 stop7h 33m

Rock Springs Sweetwater County

Wed 2/4

2:08 pm-6:10 pm

1 stop5h 02m

$308

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/18

Compare providers for flights from Portland to Rock Springs

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Portland to Rock Springs in November.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star
eDreamsPrice Accuracy3 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Portland-Rock Springs flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Portland-Rock Springs flight deals on Cheapflights vs. eDreams >95% of the time. Price accuracy is based on data collected from Portland-Rock Springs flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Portland-Rock Springs flights, Cheapflights users trust eDreams the most. eDreams has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Portland-Rock Springs flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

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 November 20, 2025.

When flying from Portland to Rock Springs, the time of day you fly usually plays a role in the price. Save by searching for a flight in the afternoon, which can drop the price by up to 43% versus a flight at noon.

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 7h 33m. 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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