PDX - RKS

$263 Find Cheap Flights from Portland to Rock Springs - Compare and Save

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Portland to Rock Springs departing on 7/31. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

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Everything you should know

Cheapest round-trip
$304
United Airlines
Wed 8/26Wed 9/9
PDX - RKS • 1 stop
Cheapest one-way
$263
United Airlines
Fri 7/31
PDX - RKS • 1 stop
Nonstop flights
Not available
There are currently no direct flights between Portland and Rock Springs. You'll need at least 1 connection.
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Flight Deals
Useful Info
Flight Deals

Cheap Flights from Portland to Rock Springs (PDX-RKS)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Portland to Rock Springs that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Portland to Rock Springs

Wed, Aug 26 - Wed, Sep 9
United Airlines Logo
4:07 pm - 10:21 pm
PDX
-
RKS
5h 14m
1 stop
United Airlines Logo
2:22 pm - 10:45 pm
RKS
-
PDX
9h 23m
2 stops
$304United Airlines
Thu, Jul 23 - Mon, Jul 27
United Airlines Logo
5:00 am - 1:31 pm
PDX
-
RKS
7h 31m
1 stop
United Airlines Logo
2:16 pm - 9:15 pm
RKS
-
PDX
7h 59m
1 stop
$328United Airlines
Tue, Aug 18 - Sat, Aug 22
United Airlines Logo
5:00 am - 1:47 pm
PDX
-
RKS
7h 47m
1 stop
United Airlines Logo
5:05 am - 9:32 am
RKS
-
PDX
5h 27m
1 stop
$378United Airlines
Tue, Aug 18 - Sat, Aug 22
United Airlines Logo
4:05 pm - 10:21 pm
PDX
-
RKS
5h 16m
1 stop
United Airlines Logo
5:05 am - 9:32 am
RKS
-
PDX
5h 27m
1 stop
$393United Airlines
Tue, Aug 18 - Sat, Aug 22
United Airlines Logo
9:00 am - 10:21 pm
PDX
-
RKS
12h 21m
2 stops
United Airlines Logo
5:05 am - 9:32 am
RKS
-
PDX
5h 27m
1 stop
$399United Airlines
Wed, Aug 26 - Wed, Sep 9
United Airlines Logo
9:00 am - 10:21 pm
PDX
-
RKS
12h 21m
2 stops
United Airlines Logo
2:22 pm - 10:45 pm
RKS
-
PDX
9h 23m
2 stops
$400United Airlines
Tue, Aug 18 - Sat, Aug 22
United Airlines Logo
9:00 am - 10:21 pm
PDX
-
RKS
12h 21m
2 stops
United Airlines Logo
5:05 am - 9:32 am
RKS
-
PDX
5h 27m
1 stop
$429United Airlines
Wed, Aug 26 - Wed, Sep 9
United Airlines Logo
4:07 pm - 10:21 pm
PDX
-
RKS
5h 14m
1 stop
United Airlines Logo
2:22 pm - 9:32 am
RKS
-
PDX
20h 10m
1 stop
$455United Airlines
Wed, Sep 30 - Sat, Oct 3
United Airlines Logo
4:09 pm - 10:21 pm
PDX
-
RKS
5h 12m
1 stop
United Airlines Logo
2:22 pm - 9:10 pm
RKS
-
PDX
7h 48m
1 stop
$489United Airlines
Wed, Sep 30 - Sat, Oct 3
United Airlines Logo
4:09 pm - 10:21 pm
PDX
-
RKS
5h 12m
1 stop
United Airlines Logo
2:22 pm - 10:57 pm
RKS
-
PDX
9h 35m
2 stops
$494United Airlines
Useful Info

KAYAK's insights & trends for Portland to Rock Springs flights

Get data-powered insights and trends into flights from Portland to Rock Springs to help you find the cheapest flights, the best time to fly and much more.

How long does a flight from Portland to Rock Springs take?

This flight route requires at least one stop and takes a minimum of 3h 47m.

Good to know

Cheapest flight$263
Flight from Portland to Rock Springs

When to book flights from Portland to Rock Springs

Are your dates flexible? Find out the best times to travel from Portland to Rock Springs based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from Portland to Rock Springs

  • What is the cheapest flight from Portland to Rock Springs?

    In the last 5 days, the lowest price for a flight from Portland to Rock Springs was $263 for a one-way ticket and $304 for a round-trip.

  • Do I need a passport to fly between Portland and Rock Springs?

    No, a passport isn't needed to fly from Portland to Rock Springs. However, local authorities might ask for an official ID.

  • Which airports will I be using when flying from Portland to Rock Springs?

    Portland and Rock Springs are both served by 1 main airport. You will leave Portland from Portland and will be arriving at Rock Springs Sweetwater County.

  • Which aircraft models fly most regularly from Portland to Rock Springs?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from Portland to Rock Springs?

    Star Alliance is the only airline alliance operating flights between Portland and Rock Springs.

  • How does KAYAK find such low prices on flights from Portland to Rock Springs?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Portland to Rock Springs.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Portland to Rock Springs?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Rock Springs from Portland is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Portland to Rock Springs?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Rock Springs with an airline and back to Portland with another airline. Booking your flights between Portland and RKS can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Portland to Rock Springs?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Rock Springs from Portland up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top airline flying from Portland to Rock Springs

 
See real verified KAYAK customer reviews for airlines flying from Portland to Rock Springs. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Portland to Rock Springs? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.4
United AirlinesOverall score based on 9967 reviews
8.1Crew
6.7Food
7.1Entertainment
7.3Comfort
7.7Boarding
Airline reviews

the whole trip was smooth, and as comfortable as flying is these days. flight crew was friendly and very courteous and helpful.

10.0 ExcellentJanaki, Feb 2026
PDX - SFO
Read more United Airlines reviews

the whole trip was smooth, and as comfortable as flying is these days. flight crew was friendly and very courteous and helpful.

Yet another flight in which beverage and snack service was skipped. Other that that, firmly mediocre. Landed early, to gate late due to congestion at the gates. Airline's fault or airports fault: unknown.

The flights were on time which was great give. It was holiday travel season and there’d been some weather issues. The only complaint and this is every time with United is the terrible seat design. The head rest is not built for comfort and having my neck bent forward for a cross country trip reminded me while I try not to take United flights as a rule.

This was a very average flight. The seat was out of alignment so more uncomfortable than usual. The cabin felt not well maintained. But I safely got where I needed to go.

We had a 90 minute delay due to equipment failure that was detected just before we took off. United rebooked my connecting flight.

Dinner was okay but the breakfast was not eatable on the flight San Francisco to Zurich.

This was a Lufthansa flight. Disappointing main meal. Very rough over Canada and arrival at FRA. IFE was almost unusable.

Poor seating comfort, seat cushion too thin, very uncomfortable. My luggage didi not make the flight due to equipment change. At least. United had it delivered the next day. I was without my toilet items for one day.

Flight cancelled because of the grounded 737s. United was good about it and got us onto a later Alaska Airlines flight to Oakland (not San Francisco as originally intended). Had to go through security again and my wife dropped her MacBook Pro, which broke, a $2,500 whoopsie. But we made it home.

I liked being upgraded to first class. The flight was a redeye, so I did sleep most of it.

Everything you need to know for your flight from Portland to Rock Springs

Information on your arrival and departure airports