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$133+ 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 6/7. Fares are subject to change and may not be available on all flights or dates of travel.
RAP — SEA
Apr 10 — Apr 171
Fri 4/10
Fri 4/17
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 March 11, 2026.

This United Airlines deal was found by Cheapflights users on 3/8. 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 4/72:47 pm
RAP
-
SEA
1 stop7h 19m
United Airlines
Tue 4/145:00 am
SEA
-
RAP
1 stop5h 24m
United Airlines
Deal found 3/8$299
This Delta deal was found by Cheapflights users on 3/9. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/84:01 pm
RAP
-
SEA
2 stops9h 02m
Delta
Tue 4/143:35 pm
SEA
-
RAP
1 stop5h 45m
Delta
Deal found 3/9$304
This Delta deal was found by Cheapflights users on 3/9. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/84:01 pm
RAP
-
SEA
2 stops9h 02m
Delta
Fri 4/171:30 pm
SEA
-
RAP
2 stops7h 50m
Delta
Deal found 3/9$309
This American Airlines deal was found by Cheapflights users on 3/9. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/64:57 pm
RAP
-
SEA
1 stop8h 47m
American Airlines
Sat 5/96:00 am
SEA
-
RAP
1 stop9h 27m
American Airlines
Deal found 3/9$314
This United Airlines deal was found by Cheapflights users on 3/9. 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 5/610:55 am
RAP
-
SEA
2 stops9h 53m
United Airlines
Sat 5/93:40 pm
SEA
-
RAP
1 stop5h 15m
United Airlines
Deal found 3/9$324
This United Airlines deal was found by Cheapflights users on 3/6. 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 3/212:45 pm
RAP
-
SEA
1 stop7h 29m
United Airlines
Wed 3/255:00 am
SEA
-
RAP
1 stop7h 13m
United Airlines
Deal found 3/6$329
This Delta deal was found by Cheapflights users on 3/9. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/84:01 pm
RAP
-
SEA
2 stops9h 02m
Delta
Mon 4/138:50 am
SEA
-
RAP
2 stops24h 27m
Delta
Deal found 3/9$333
This United Airlines deal was found by Cheapflights users on 3/10. 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 4/82:47 pm
RAP
-
SEA
2 stops9h 40m
United Airlines
Mon 4/135:00 am
SEA
-
RAP
1 stop5h 24m
United Airlines
Deal found 3/10$334
This Delta deal was found by Cheapflights users on 3/9. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/84:01 pm
RAP
-
SEA
2 stops9h 02m
Delta
Wed 4/156:00 am
SEA
-
RAP
1 stop8h 15m
Delta
Deal found 3/9$335
This United Airlines deal was found by Cheapflights users on 3/9. 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 4/84:15 pm
RAP
-
SEA
1 stop7h 41m
United Airlines
Wed 4/1511:35 am
SEA
-
RAP
2 stops8h 09m
United Airlines
Deal found 3/9$336
This United Airlines deal was found by Cheapflights users on 3/7. 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 5/14:13 pm
RAP
-
SEA
1 stop7h 46m
United Airlines
Wed 7/83:40 pm
SEA
-
RAP
1 stop5h 45m
United Airlines
Deal found 3/7$343

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 March 11, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$299
(United Airlines)

One-way from

$133
(Kiwi.com)

Popular in

August

Cheapest in

February

Average price

$374
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. 10% potential increase in price ($53 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 March 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 March 11, 2026.
Use the filters below to find and compare flights from Rapid City to Seattle that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Rapid CitySeattle

RAP - SEA

RAPSEA

Rapid City

Tue 4/7

2:47 pm-9:06 pm

1 stop7h 19m

Seattle/Tacoma Intl

Tue 4/14

5:00 am-11:24 am

1 stop5h 24m

$299

Rapid CitySeattle

RAP - SEA

RAPSEA

Rapid City

Wed 5/6

10:55 am-7:48 pm

2 stops9h 53m

Seattle/Tacoma Intl

Sat 5/9

3:40 pm-9:55 pm

1 stop5h 15m

$324

Rapid CitySeattle

RAP - SEA

RAPSEA

Rapid City

Sat 3/21

2:45 pm-9:14 pm

1 stop7h 29m

Seattle/Tacoma Intl

Wed 3/25

5:00 am-1:13 pm

1 stop7h 13m

$329

Rapid CitySeattle

RAP - SEA

RAPSEA

Rapid City

Fri 5/1

4:13 pm-10:59 pm

1 stop7h 46m

Seattle/Tacoma Intl

Wed 7/8

3:40 pm-10:25 pm

1 stop5h 45m

$343

Rapid CitySeattle

RAP - SEA

RAPSEA

Rapid City

Sat 5/2

2:35 pm-9:06 pm

1 stop7h 31m

Seattle/Tacoma Intl

Tue 5/5

5:02 am-11:35 am

1 stop5h 33m

$369
Quickest round-trip

Rapid CitySeattle

RAP - SEA

RAPSEA

Rapid City

Wed 4/22

12:00 pm-6:00 pm

1 stop7h 00m

Seattle/Tacoma Intl

Sun 4/26

5:00 am-11:24 am

1 stop5h 24m

$386
Cheapest one-way
Quickest one-way

Rapid CitySeattle

RAP - SEA

RAPSEA

Rapid City

Mon 4/27

2:47 pm-9:06 pm

1 stop7h 19m

$187

Rapid CitySeattle

RAP - SEA

RAPSEA

Rapid City

Mon 6/8

9:50 pm-1:01 pm

2 stops16h 11m

$192

Rapid CitySeattle

RAP - SEA

RAPSEA

Rapid City

Wed 4/15

2:47 pm-11:27 pm

2 stops9h 40m

$206

Rapid CitySeattle

RAP - SEA

RAPSEA

Rapid City

Sun 6/7

9:54 pm-7:59 pm

3 stops23h 05m

$243

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/6

Showing 1-10 of 14 resultsSorted by cheapest first
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 March.
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 $188). Flying from Rapid City to Seattle in June is currently the most expensive (average of $465). 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.

How much does it cost to fly round-trip from Rapid City to Seattle?

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 March 11, 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
8,278 reviews

Comfort

7.9

Entertainment

7.8

Overall

7.9

Crew

8.5

Food

7.2

Boarding

8.1

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
8,278 reviews
Delta
7.9
Good
8,278 reviews

Comfort

7.9

Entertainment

7.8

Overall

7.9

Crew

8.5

Food

7.2

Boarding

8.1

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
9,414 reviews
Delta
7.9
Good
8,278 reviews

Comfort

7.9

Entertainment

7.8

Overall

7.9

Crew

8.5

Food

7.2

Boarding

8.1

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 19m. Fly via United Airlines to get the fastest option. Rapid City and Seattle are separated by a distance of 954 mi.

  • 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 $264 on this airline. An additional option worth looking into is United Airlines, starting at $278. 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 $188). Flying from Rapid City to Seattle in June is currently the most expensive (average of $465). 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
Kent
Lynnwood
Edmonds
Lacey
Renton
Puyallup
Kirkland
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 March 11, 2026.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$264Average$545FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$278Average$479FlexibilityNo cancel feeOn-time69%

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