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$114+ 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 8/7. Fares are subject to change and may not be available on all flights or dates of travel.
RAP — SEA
Jun 17 — Jun 241
Tue 6/17
Tue 6/24
1 adult, Economy
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Cheap 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 June 12, 2025.

Round-trip from

$259
(United Airlines)

One-way from

$114
(Mytrip)

Popular in

April

Cheapest in

March

Average price

$533
From Rapid City to Seattle/Tacoma Intl
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One-way flight from Rapid City to Seattle/Tacoma Intl
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High demand for flights, 3% potential price rise
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Cheapest flight prices on average. 3% potential price decrease ($15 potential savings vs. average RT price).
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Average for round-trip flights in June 2025
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Find 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 June 12, 2025.

This United Airlines deal was found by Cheapflights users on 6/11. 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 10/89:56 amRAP - SEA
1 stop6h 36mUnited Airlines
Sun 10/125:00 amSEA - RAP
1 stop6h 37mUnited Airlines
Deal found 6/11$259
This Delta deal was found by Cheapflights users on 6/12. 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 10/284:35 pmRAP - SEA
1 stop7h 57mDelta
Sat 11/19:40 amSEA - RAP
2 stops11h 30mDelta
Deal found 6/12$264
This American Airlines deal was found by Cheapflights users on 6/12. 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 8/1312:50 pmRAP - SEA
1 stop11h 50mAmerican Airlines
Wed 8/2012:45 amSEA - RAP
1 stop15h 57mAmerican Airlines
Deal found 6/12$306
This Booking.com deal was found by Cheapflights users on 6/10. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/235:27 pmRAP - SEA
1 stop6h 23mSun Country Air
Fri 6/279:15 amSEA - RAP
1 stop6h 12mSun Country Air
Deal found 6/10$475

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 June 12, 2025.
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

Wed 10/8

9:56 am-3:32 pm

1 stop6h 36m

Seattle/Tacoma Intl

Sun 10/12

5:00 am-12:37 pm

1 stop6h 37m

$259

Rapid CitySeattle

RAP - SEA

RAPSEA

Rapid City

Tue 10/28

4:35 pm-11:32 pm

1 stop7h 57m

Seattle/Tacoma Intl

Sat 11/1

9:40 am-10:10 pm

2 stops11h 30m

$264

Rapid CitySeattle

RAP - SEA

RAPSEA

Rapid City

Wed 8/13

12:50 pm-11:40 pm

1 stop11h 50m

Seattle/Tacoma Intl

Wed 8/20

12:45 am-5:42 pm

1 stop15h 57m

$306

Rapid CitySeattle

RAP - SEA

RAPSEA

Rapid City

Mon 6/23

5:27 pm-10:50 pm

1 stop6h 23m

Seattle/Tacoma Intl

Fri 6/27

9:15 am-4:27 pm

1 stop6h 12m

$475

Rapid CitySeattle

RAP - SEA

RAPSEA

Rapid City

Mon 6/23

5:27 pm-3:03 pm

2 stops22h 36m

Seattle/Tacoma Intl

Fri 6/27

9:15 am-4:27 pm

1 stop6h 12m

$606

Rapid CitySeattle

RAP - SEA

RAPSEA

Rapid City

Thu 8/7

9:59 pm-4:25 pm

1 stop19h 26m

$114

Rapid CitySeattle

RAP - SEA

RAPSEA

Rapid City

Thu 8/28

4:41 pm-11:16 pm

1 stop7h 35m

$181

Rapid CitySeattle

RAP - SEA

RAPSEA

Rapid City

Wed 8/6

4:30 pm-11:59 pm

2 stops8h 29m

$186

Rapid CitySeattle

RAP - SEA

RAPSEA

Rapid City

Wed 8/6

5:59 pm-10:59 pm

1 stop6h 00m

$216

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/12

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 $238). Flying from Rapid City to Seattle in July is currently the most expensive (average of $391). 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.

What is the cheapest time of day to fly from RAP to SEA?

Find hourly flight availability from Rapid City to Seattle. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated June 12, 2025.

It’s typically best to fly out from Rapid City to Seattle at noon. Doing so could potentially save you 8% on the flight price compared to flying in the morning, which is usually more expensive.

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 June 12, 2025.
Get a feel of what it's like to fly with Delta, United Airlines and American Airlines from Rapid City to Seattle by reading reviews from past customers. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,950 reviews

Entertainment

7.9

Crew

8.5

Overall

8.0

Comfort

7.9

Boarding

8.2

Food

7.3

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Delta
8.0
Very good
7,950 reviews
Delta
8.0
Very good
7,950 reviews

Entertainment

7.9

Crew

8.5

Overall

8.0

Comfort

7.9

Boarding

8.2

Food

7.3

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
United Airlines
7.4
Good
8,790 reviews
Delta
8.0
Very good
7,950 reviews

Entertainment

7.9

Crew

8.5

Overall

8.0

Comfort

7.9

Boarding

8.2

Food

7.3

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
American Airlines
7.2
Good
10,000 reviews
Delta
8.0
Very good
7,950 reviews

Entertainment

7.9

Crew

8.5

Overall

8.0

Comfort

7.9

Boarding

8.2

Food

7.3

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Sun Country Air
6.9
Okay
345 reviews
Delta
8.0
Very good
7,950 reviews

Entertainment

7.9

Crew

8.5

Overall

8.0

Comfort

7.9

Boarding

8.2

Food

7.3

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

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.

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

    Our cheapest airline available from Rapid City to Seattle is United Airlines. Our recent data shows that you can find tickets from as low as $259 on this airline. Additional options worth looking into are Delta and American Airlines, starting at $264 and $306 round-trip. Users have found that United Airlines is 48% 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 American Airlines ($181), Delta ($186), and United Airlines ($216).

  • 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 $238). Flying from Rapid City to Seattle in July is currently the most expensive (average of $391). 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 Rapid City?

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

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 June 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$258Average$368FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$339Average$573FlexibilityNo cancel feeOn-time69%

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