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$323+ Cheap flights from Rock Springs to Bismarck (RKS - BIS)

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 1/21. Fares are subject to change and may not be available on all flights or dates of travel.
RKS — BIS
Jan 11 — Jan 181
Sun 1/11
Sun 1/18
1 adult, Economy
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Cheap flight deals from Rock Springs to Bismarck

Best flights from Rock Springs to Bismarck
Discover carefully curated flight deals from Rock Springs to Bismarck that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated December 12, 2025.

This United Airlines deal was found by Cheapflights users on 12/9. 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.
Wed 1/212:08 pmRKS - BIS
1 stop8h 22mUnited Airlines
Sat 1/249:00 amBIS - RKS
1 stop5h 33mUnited Airlines
Deal found 12/9$323

Find flight deals from Rock Springs to Bismarck

Discover tips and strategies to find the most affordable flight options for your journey from Rock Springs (RKS) to Bismarck (BIS). 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 December 12, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

Expedia
3 stars

Round-trip from

$323
(United Airlines)
Provider with most accurate pricing for Rock Springs Sweetwater County-Bismarck flight deals.
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Provider most trusted by Cheapflights users for Rock Springs Sweetwater County-Bismarck flights.
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From Rock Springs Sweetwater County to Bismarck
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Cheapflights Fare Finder

 
Customize your flight search to find flights from Rock Springs to Bismarck 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 December 12, 2025.
Use the filters below to find and compare flights from Rock Springs to Bismarck that are best for you.

Fly from

Rock Springs

Fly to

Bismarck

Route

Depart

Return

Price

Rock SpringsBismarck

RKS - BIS

RKSBIS

Rock Springs Sweetwater County

Wed 1/21

2:08 pm-11:30 pm

1 stop8h 22m

Bismarck

Sat 1/24

9:00 am-1:33 pm

1 stop5h 33m

$323

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/9

Compare providers for flights from Rock Springs to Bismarck

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 Rock Springs to Bismarck in December.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star

*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 Rock Springs-Bismarck flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Rock Springs-Bismarck flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Rock Springs-Bismarck flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Rock Springs-Bismarck flights, Cheapflights users trust Expedia the most. Expedia 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 Rock Springs-Bismarck 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 Rock Springs to Bismarck

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

Related info for your journey

Find useful and relevant information for your journey from Rock Springs to Bismarck. 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 Rock Springs to Bismarck?

    United Airlines can get you from Rock Springs to Bismarck in just under 8h 22m. Your travel time can differ by up to . The distance from Rock Springs to Bismarck is about 545 mi.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Rock Springs to Bismarck 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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