$278+ 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 10/31. Fares are subject to change and may not be available on all flights or dates of travel.
RKS — SEA
Oct 17 — Oct 241
Round-trip
1 adult, Economy
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Find cheap flights from Rock Springs to Seattle with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
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Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheap flight deals from Rock Springs to Seattle
Cheapest
Best
Last-minute
One-way
Cheapest flights from Rock Springs to SeattleExplore 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 September 17, 2026.
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 September 17, 2026.
This United Airlines deal was found by Cheapflights users on 9/16. 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 12/122:05 pm -
1 stop8h 16m
Tue 12/159:00 am -
2 stops12h 01m
Deal found 9/16![United Airlines logo]()
$334
This United Airlines deal was found by Cheapflights users on 9/14. 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.
Tue 9/292:22 pm -
1 stop7h 53m
Sat 10/35:00 am -
1 stop7h 42m
Deal found 9/14![United Airlines logo]()
$358
This United Airlines deal was found by Cheapflights users on 9/15. 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 9/305:05 am -
2 stops8h 18m
Sun 10/45:00 am -
1 stop7h 42m
Deal found 9/15![United Airlines logo]()
$384
This United Airlines deal was found by Cheapflights users on 9/16. 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.
Tue 11/105:00 am -
1 stop5h 47m
Sat 11/145:05 am -
1 stop7h 39m
Deal found 9/16![United Airlines logo]()
$408
This United Airlines deal was found by Cheapflights users on 9/14. 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.
Mon 9/212:22 pm -
1 stop7h 53m
Mon 9/282:27 pm -
1 stop6h 54m
Deal found 9/14![United Airlines logo]()
$445
Best flights from Rock Springs to SeattleDiscover carefully curated flight deals from Rock Springs to Seattle that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 17, 2026.
Discover carefully curated flight deals from Rock Springs to Seattle that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 17, 2026.
This United Airlines deal was found by Cheapflights users on 9/16. 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 12/122:05 pm -
1 stop8h 16m
Tue 12/159:00 am -
2 stops12h 01m
Deal found 9/16![United Airlines logo]()
$334
This United Airlines deal was found by Cheapflights users on 9/15. 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 9/305:05 am -
1 stop7h 41m
Sun 10/45:00 am -
1 stop7h 42m
Deal found 9/15![United Airlines logo]()
$358
This United Airlines deal was found by Cheapflights users on 9/14. 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.
Tue 9/292:22 pm -
1 stop7h 53m
Sat 10/35:00 am -
1 stop7h 42m
Deal found 9/14![United Airlines logo]()
$358
This United Airlines deal was found by Cheapflights users on 9/16. 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.
Tue 11/105:00 am -
1 stop5h 47m
Sat 11/145:05 am -
1 stop7h 39m
Deal found 9/16![United Airlines logo]()
$408
Last-minute flights from Rock Springs to SeattleDiscover last-minute flight deals from Rock Springs to Seattle. Data last updated September 17, 2026 and is based on user searches.
Discover last-minute flight deals from Rock Springs to Seattle. Data last updated September 17, 2026 and is based on user searches.
This United Airlines deal was found by Cheapflights users on 9/14. 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.
Mon 9/212:22 pm -
1 stop7h 53m
Mon 9/282:27 pm -
1 stop6h 54m
Deal found 9/14![United Airlines logo]()
$445
This United Airlines deal was found by Cheapflights users on 9/14. 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.
Tue 9/292:22 pm -
1 stop7h 53m
Sat 10/35:00 am -
1 stop7h 42m
Deal found 9/14![United Airlines logo]()
$358
This United Airlines deal was found by Cheapflights users on 9/15. 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 9/305:05 am -
2 stops8h 18m
Sun 10/45:00 am -
1 stop7h 42m
Deal found 9/15![United Airlines logo]()
$384
One-way flights from Rock Springs to SeattleSearch for one-way flight options from Rock Springs to Seattle. Find affordable one-way fares based on user searches. Data last updated September 17, 2026.
Search for one-way flight options from Rock Springs to Seattle. Find affordable one-way fares based on user searches. Data last updated September 17, 2026.
This United Airlines deal was found by Cheapflights users on 9/13. 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 10/312:23 pm -
1 stop7h 56m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/13![United Airlines logo]()
$278
This United Airlines deal was found by Cheapflights users on 9/13. 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.
Tue 10/275:00 am -
1 stop5h 47m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/13![United Airlines logo]()
$318
This United Airlines deal was found by Cheapflights users on 9/13. 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 11/265:00 am -
2 stops12h 26m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/13![United Airlines logo]()
$329
This United Airlines deal was found by Cheapflights users on 9/13. 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 11/285:00 am -
2 stops17h 50m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/13![United Airlines logo]()
$351
This United Airlines deal was found by Cheapflights users on 9/13. 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.
Tue 12/12:05 pm -
1 stop8h 16m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/13![United Airlines logo]()
$373
This United Airlines deal was found by Cheapflights users on 9/13. 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.
Fri 10/302:23 pm -
3 stops22h 57m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/13![United Airlines logo]()
$379
Find 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 September 17, 2026.
Most accurate provider | Expedia 1 star |
|---|---|
Most trusted provider | Expedia 3 stars |
Round-trip from | $334 (United Airlines) |
One-way from | $278 (United Airlines) |
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 7,457,451 searches. Data last updated September 17, 2026.
Use the filters below to find and compare flights from Rock Springs to Seattle that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
Rock SpringsSeattle
RKS Rock Springs Sweetwater County - SEA Seattle/Tacoma Intl
RKSSEA
Rock Springs Sweetwater County
Sat 10/31
2:23 pm-9:19 pm
1 stop7h 56m
Seattle/Tacoma Intl
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$278
Quickest round-trip
Rock SpringsSeattle
RKS Rock Springs Sweetwater County - SEA Seattle/Tacoma Intl
RKSSEA
Rock Springs Sweetwater County
Tue 10/27
5:00 am-9:47 am
1 stop5h 47m
Seattle/Tacoma Intl
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$318
Rock SpringsSeattle
RKS Rock Springs Sweetwater County - SEA Seattle/Tacoma Intl
RKSSEA
Rock Springs Sweetwater County
Thu 10/29
5:00 am-2:39 pm
2 stops10h 39m
Seattle/Tacoma Intl
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$324
Rock SpringsSeattle
RKS Rock Springs Sweetwater County - SEA Seattle/Tacoma Intl
RKSSEA
Rock Springs Sweetwater County
Sat 12/12
2:05 pm-9:21 pm
1 stop8h 16m
Seattle/Tacoma Intl
Tue 12/15
9:00 am-10:01 pm
2 stops12h 01m
$334
Rock SpringsSeattle
RKS Rock Springs Sweetwater County - SEA Seattle/Tacoma Intl
RKSSEA
Rock Springs Sweetwater County
Wed 9/30
5:05 am-11:46 am
1 stop7h 41m
Seattle/Tacoma Intl
Sun 10/4
5:00 am-1:42 pm
1 stop7h 42m
$358
Rock SpringsSeattle
RKS Rock Springs Sweetwater County - SEA Seattle/Tacoma Intl
RKSSEA
Rock Springs Sweetwater County
Tue 9/29
2:22 pm-9:15 pm
1 stop7h 53m
Seattle/Tacoma Intl
Sat 10/3
5:00 am-1:42 pm
1 stop7h 42m
$358
Rock SpringsSeattle
RKS Rock Springs Sweetwater County - SEA Seattle/Tacoma Intl
RKSSEA
Rock Springs Sweetwater County
Tue 11/10
5:00 am-9:47 am
1 stop5h 47m
Seattle/Tacoma Intl
Sat 11/14
5:05 am-1:44 pm
1 stop7h 39m
$408
Rock SpringsSeattle
RKS Rock Springs Sweetwater County - SEA Seattle/Tacoma Intl
RKSSEA
Rock Springs Sweetwater County
Thu 11/26
5:00 am-8:56 pm
3 stops16h 56m
Seattle/Tacoma Intl
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$504
Sorted by cheapest first
- Most accurate provider: When it comes to deals on Rock Springs-Seattle flights, users find the pricing of Expedia to be most consistent on Cheapflights vs. Expedia Users can find the same prices on Rock Springs-Seattle flight deals on Cheapflights vs. Expedia <90% 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 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-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.
RKS-SEA
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.
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 September 17, 2026.
Read through reviews of airlines operating flights from Rock Springs to Seattle, such as United Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Comfort
7.3
Overall
7.4
Boarding
7.7
Entertainment
7.1
Food
6.7
Crew
8.1
Reviews
1 / 20
8.0
ExcellentAsha,Sep 2026
LGA - IAH
Comfort
7.3
Overall
7.4
Boarding
7.7
Entertainment
7.1
Food
6.7
Crew
8.1
Reviews
1 / 20
8.0
ExcellentAsha,Sep 2026
LGA - IAH
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.
Traveling to a place near Seattle?
Book flights to Seattle if you plan to visit one of these locationsSeaTac
Renton
Tacoma
Lacey
Leavenworth
Olympia
Tukwila
Snoqualmie
Puyallup
Lynnwood
Centralia
Kent
Tumwater
Ellensburg
Issaquah
Marysville
Ocean Shores
Lakewood
Fife
Poulsbo
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Rock Springs and Seattle flights
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Top airline flying from Rock Springs to Seattle
Discover the top airline that operate flights from Rock Springs to Seattle. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 7,457,451 searches. Data last updated September 17, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$238 | Average$458 | FlexibilityNo cancel fee | On-time69% |