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$173+ Cheap flights from Rapid City to Seattle (RAP - SEA)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 4/26. Fares are subject to change and may not be available on all flights or dates of travel.
RAP — SEA
Feb 26 — Mar 51
Thu 2/26
Thu 3/5
1 adult, Economy
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Cheap flight deals from Rapid City to Seattle

Cheapest flights from Rapid City to Seattle
Explore the most affordable flight options available from Rapid City to Seattle. Find the lowest fares from popular airlines and budget airlines, with prices last updated on January 27, 2026.

This United Airlines deal was found by Cheapflights users on 1/26. 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 4/292:42 pm
RAP
-
SEA
1 stop7h 24m
United Airlines
Tue 5/55:05 am
SEA
-
RAP
1 stop5h 30m
United Airlines
Deal found 1/26$279
This Delta deal was found by Cheapflights users on 1/26. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/106:00 am
RAP
-
SEA
1 stop7h 23m
Delta
Sat 2/143:30 pm
SEA
-
RAP
1 stop5h 57m
Delta
Deal found 1/26$309
This United Airlines deal was found by Cheapflights users on 1/26. 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 4/297:00 am
RAP
-
SEA
2 stops8h 46m
United Airlines
Wed 5/68:51 am
SEA
-
RAP
1 stop6h 04m
United Airlines
Deal found 1/26$321
This United Airlines deal was found by Cheapflights users on 1/26. 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 5/85:35 pm
RAP
-
SEA
1 stop6h 24m
United Airlines
Tue 5/125:05 am
SEA
-
RAP
1 stop7h 04m
United Airlines
Deal found 1/26$325
This Kiwi.com deal was found by Cheapflights users on 1/26. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/305:57 pm
RAP
-
SEA
1 stop27h 23m
Multiple Airlines
Wed 5/610:42 am
SEA
-
RAP
2 stops29h 25m
Multiple Airlines
Deal found 1/26$334
This United Airlines deal was found by Cheapflights users on 1/26. 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 5/15:35 pm
RAP
-
SEA
1 stop6h 24m
United Airlines
Thu 5/78:45 am
SEA
-
RAP
2 stops10h 43m
United Airlines
Deal found 1/26$339
This United Airlines deal was found by Cheapflights users on 1/25. 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 2/62:40 pm
RAP
-
SEA
1 stop7h 35m
United Airlines
Mon 2/94:30 pm
SEA
-
RAP
1 stop4h 59m
United Airlines
Deal found 1/25$354
This American Airlines deal was found by Cheapflights users on 1/27. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/274:42 pm
RAP
-
SEA
1 stop9h 12m
American Airlines
Mon 8/3112:57 am
SEA
-
RAP
1 stop9h 49m
American Airlines
Deal found 1/27$358
This Delta deal was found by Cheapflights users on 1/25. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 2/610:54 am
RAP
-
SEA
2 stops8h 35m
Delta
Mon 2/93:35 pm
SEA
-
RAP
1 stop5h 53m
Delta
Deal found 1/25$359

Find flight deals from Rapid City to Seattle

Discover tips and strategies to find the most affordable flight options for your journey from Rapid City (RAP) 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 January 27, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$309
(Delta)

One-way from

$173
(Kiwi.com)

Popular in

August

Cheapest in

February

Average price

$343
Provider with most accurate pricing for Rapid City-Seattle/Tacoma Intl flight deals.
Search Deals
Provider most trusted by Cheapflights users for Rapid City-Seattle/Tacoma Intl flights.
Search Deals
From Rapid City to Seattle/Tacoma Intl
Search Deals
One-way flight from Rapid City to Seattle/Tacoma Intl
Search Deals
Highest demand for flights based on searches. 11% potential increase in price ($54 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($10 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in January 2026
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Rapid City 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 January 27, 2026.
Use the filters below to find and compare flights from Rapid City to Seattle that are best for you.

Fly from

Rapid City

Fly to

Seattle

Route

Depart

Return

Price

Rapid CitySeattle

RAP - SEA

RAPSEA

Rapid City

Fri 2/6

2:40 pm-9:15 pm

1 stop7h 35m

Seattle/Tacoma Intl

Mon 2/9

4:30 pm-10:29 pm

1 stop4h 59m

$354

Rapid CitySeattle

RAP - SEA

RAPSEA

Rapid City

Wed 3/4

2:21 pm-11:07 pm

1 stop9h 46m

Seattle/Tacoma Intl

Sun 3/8

1:54 pm-10:36 pm

1 stop7h 42m

$358

Rapid CitySeattle

RAP - SEA

RAPSEA

Rapid City

Fri 2/6

10:54 am-6:29 pm

2 stops8h 35m

Seattle/Tacoma Intl

Mon 2/9

3:35 pm-10:28 pm

1 stop5h 53m

$359

Rapid CitySeattle

RAP - SEA

RAPSEA

Rapid City

Fri 1/30

2:40 pm-9:15 pm

1 stop7h 35m

Seattle/Tacoma Intl

Tue 2/10

5:00 am-11:25 am

1 stop5h 25m

$364

Rapid CitySeattle

RAP - SEA

RAPSEA

Rapid City

Sat 2/7

7:00 am-1:58 pm

1 stop7h 58m

Seattle/Tacoma Intl

Tue 2/10

5:00 am-11:25 am

1 stop5h 25m

$379

Rapid CitySeattle

RAP - SEA

RAPSEA

Rapid City

Fri 2/6

2:40 pm-11:16 pm

2 stops9h 36m

Seattle/Tacoma Intl

Sun 2/15

2:55 pm-10:16 pm

1 stop6h 21m

$385

Rapid CitySeattle

RAP - SEA

RAPSEA

Rapid City

Fri 2/6

10:54 am-6:29 pm

2 stops8h 35m

Seattle/Tacoma Intl

Thu 2/12

6:10 am-3:44 pm

1 stop8h 34m

$394

Rapid CitySeattle

RAP - SEA

RAPSEA

Rapid City

Fri 2/20

7:00 am-1:49 pm

1 stop7h 49m

Seattle/Tacoma Intl

Sun 2/22

2:55 pm-8:44 pm

1 stop4h 49m

$401

Rapid CitySeattle

RAP - SEA

RAPSEA

Rapid City

Wed 3/4

7:00 am-4:21 pm

2 stops10h 21m

Seattle/Tacoma Intl

Sun 3/8

5:00 am-10:27 pm

1 stop16h 27m

$407

Rapid CitySeattle

RAP - SEA

RAPSEA

Rapid City

Sun 4/26

5:57 pm-5:42 pm

2 stops48h 45m

$173

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/26

Showing 1-10 of 17 results
1
2

Compare providers for flights from Rapid City to Seattle

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 Rapid City to Seattle in January.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice 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 Rapid City-Seattle flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Rapid City-Seattle flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Rapid City-Seattle flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Rapid City-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 Rapid City-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 Rapid City to Seattle

Have a flexible travel schedule? Discover the best time to fly to Seattle from Rapid City 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 Rapid City to Seattle

What is the cheapest month to book a flight from Rapid City to Seattle?

Currently, January is the cheapest month in which you can book a flight from Rapid City to Seattle (average of $200). Flying from Rapid City to Seattle in June is currently the most expensive (average of $467). 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.

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 January 27, 2026.
See what other customers who have flown with Delta and United Airlines from Rapid City to Seattle have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
7.9
Good
8,119 reviews

Boarding

8.1

Entertainment

7.8

Comfort

7.9

Overall

7.9

Crew

8.5

Food

7.2

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
Delta
7.9
Good
8,119 reviews
Delta
7.9
Good
8,119 reviews

Boarding

8.1

Entertainment

7.8

Comfort

7.9

Overall

7.9

Crew

8.5

Food

7.2

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
United Airlines
7.4
Good
9,205 reviews
Delta
7.9
Good
8,119 reviews

Boarding

8.1

Entertainment

7.8

Comfort

7.9

Overall

7.9

Crew

8.5

Food

7.2

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.

Related info for your journey

Find useful and relevant information for your journey from Rapid City to Seattle. 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 Rapid City to Seattle?

    There are many flights that can get you from Rapid City to Seattle in 7h 35m. Fly via United Airlines, American Airlines, or Delta to get the fastest option. Rapid City and Seattle are separated by a distance of 954 mi. This flight may include one or multiple stops.

  • What are the cheapest airlines flying from Rapid City to Seattle round-trip?

    Our cheapest airline available from Rapid City to Seattle is Delta. Our recent data shows that you can find tickets from as low as $258 on this airline. An additional option worth looking into is United Airlines, starting at $282. Users have found that Delta is 40% cheaper than the other options available to this destination.

  • What are the cheapest airlines to fly from Rapid City to Seattle one-way?

    The cheapest airlines for a one-way flight from Rapid City to Seattle are Sun Country Air ($137), American Airlines ($180), and United Airlines ($215).

  • Can I find deals for flights from Rapid City to Seattle that include hotel bookings?

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

  • How can I find direct flights from Rapid City to Seattle?

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

  • Can I find deals for business class flights from Rapid City to Seattle?

    Yes. Cheapflights offers flight deals from Rapid City 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 Rapid City to Seattle?

    Currently, January is the cheapest month in which you can book a flight from Rapid City to Seattle (average of $200). Flying from Rapid City to Seattle in June is currently the most expensive (average of $467). 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 Seattle?

Book flights to Seattle if you plan to visit one of these locations
Tacoma
SeaTac
Lakewood
Ocean Shores
Olympia
Lynnwood
Lacey
Edmonds
Renton
Puyallup
Kirkland
Kent
Tukwila
Fife
Aberdeen
Shoreline
Marysville
Centralia
Federal Way
Chehalis

Browse thousands of different options on Cheapflights for your next trip

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Top 2 airlines flying from Rapid City to Seattle

Discover the top 2 airlines that operate flights from Rapid City 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 2,558,603 searches. Data last updated January 27, 2026.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$258Average$398FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$282Average$472FlexibilityNo cancel feeOn-time69%

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