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$443+ Cheap flights from Rock Springs to Seattle (RKS - SEA)

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 5/29. Fares are subject to change and may not be available on all flights or dates of travel.
RKS — SEA
Apr 20 — Apr 271
Sun 4/20
Sun 4/27
1 adult, Economy
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Cheap flight deals from Rock Springs to Seattle

Discover tips and strategies to find the most affordable flight options for your journey from Rock Springs (RKS) to Seattle (SEA). 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 April 15, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
2 stars

Round-trip from

$443
(United Airlines)
Provider with most accurate pricing for Rock Springs Sweetwater County-Seattle/Tacoma Intl flight deals.
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Provider most trusted by Cheapflights users for Rock Springs Sweetwater County-Seattle/Tacoma Intl flights.
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From Rock Springs Sweetwater County to Seattle/Tacoma Intl
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Find flight deals from Rock Springs to Seattle

Cheapest flights from Rock Springs to Seattle
Explore the most affordable flight options available from Rock Springs to Seattle. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 15, 2025.

This United Airlines deal was found by Cheapflights users on 4/14. 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.
Thu 5/295:08 amRKS - SEA
1 stop9h 20mUnited Airlines
Tue 6/312:44 pmSEA - RKS
1 stop8h 29mUnited Airlines
Deal found 4/14$443

Cheapflights Fare Finder

Customize your flight search to find flights from Rock Springs to Seattle 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 April 15, 2025.
Use the filters below to find and compare flights from Rock Springs to Seattle that are best for you.

Fly from

Rock Springs

Fly to

Seattle

Route

Depart

Return

Price

Rock SpringsSeattle

RKS - SEA

RKSSEA

Rock Springs Sweetwater County

Thu 5/29

5:08 am-1:28 pm

1 stop9h 20m

Seattle/Tacoma Intl

Tue 6/3

12:44 pm-10:13 pm

1 stop8h 29m

$443

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/14

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

Have a flexible travel schedule? Discover the best time to fly to Seattle 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.

Cheapflights Insights

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

Rainfall in Seattle by month

Plan your trip to Seattle by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Seattle ranges from 0.7 - 6.6 inches per month. November is typically the wettest month, when rainfall can reach 6.6 in. July is typically the driest time to visit Seattle when rainfall is around 0.7 in.

Temperature in Seattle by month

Plan your trip to Seattle by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Seattle, 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 66.2 F. Travelers looking to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 41.0 F).

Reviews of airlines servicing Seattle

Get insights into the airlines that provide service to Seattle. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Seattle. Reviews last updated April 15, 2025.
United Airlines
7.4
Good
8,658 reviews

Overall

7.4

Boarding

7.7

Entertainment

7.1

Crew

8.1

Comfort

7.3

Food

6.6

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
8,658 reviews
United Airlines
7.4
Good
8,658 reviews

Overall

7.4

Boarding

7.7

Entertainment

7.1

Crew

8.1

Comfort

7.3

Food

6.6

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

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

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Rock Springs to Seattle by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Rock Springs to Seattle?

    Currently, January is the cheapest month in which you can book a flight from Rock Springs to Seattle (average of $238). Flying from Rock Springs to Seattle in July is currently the most expensive (average of $411). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Traveling to a place near Rock Springs?

Book flights to Rock Springs if you plan to visit one of these locations
SeaTac
Tukwila
Tacoma
Renton
Lakewood
Ocean Shores
Lacey
Leavenworth
Federal Way
Olympia
Shoreline
Cle Elum
Centralia
Aberdeen
Kent
Lynnwood
Shelton
Silverdale
Redmond
Issaquah

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