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$206+ 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 8/6. Fares are subject to change and may not be available on all flights or dates of travel.
RAP — SEA
Apr 27 — May 41
Sun 4/27
Sun 5/4
1 adult, Economy
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Cheapflights Tip: The best prices from Rapid City to Seattle/Tacoma Intl are usually found in March or February, booked 21 days in advance, depart on a Tuesday or Monday and return on a Thursday

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 April 22, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$351
(Delta)

One-way from

$206
(American Airlines)

Popular in

June

Cheapest in

March

Average price

$490
Provider with most accurate pricing for Rapid City-Seattle/Tacoma Intl flight deals.
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Provider most trusted by Cheapflights users for Rapid City-Seattle/Tacoma Intl flights.
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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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Highest demand for flights based on searches. 17% potential increase in price ($111 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($11 potential savings vs. average RT price).
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Average for round-trip flights in April 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 April 22, 2025.

This American Airlines deal was found by Cheapflights users on 4/22. 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.
Fri 9/2612:47 pmRAP - SEA
1 stop8h 17mAmerican Airlines
Sun 10/56:18 amSEA - RAP
1 stop10h 09mAmerican Airlines
Deal found 4/22$351
This United Airlines deal was found by Cheapflights users on 4/22. 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 9/103:19 pmRAP - SEA
1 stop7h 03mUnited Airlines
Mon 9/155:07 amSEA - RAP
1 stop6h 31mUnited Airlines
Deal found 4/22$366
This Delta deal was found by Cheapflights users on 4/22. 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 9/266:20 amRAP - SEA
2 stops11h 38mDelta
Sat 10/412:40 amSEA - RAP
1 stop8h 25mDelta
Deal found 4/22$386
This Mytrip deal was found by Cheapflights users on 4/22. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/1910:02 pmRAP - SEA
1 stop18h 01mMultiple Airlines
Wed 6/253:58 pmSEA - RAP
1 stop28h 14mMultiple Airlines
Deal found 4/22$417

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 April 22, 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

Tue 7/8

4:40 pm-11:55 pm

1 stop8h 15m

Seattle/Tacoma Intl

Tue 7/15

11:55 pm-9:52 am

1 stop8h 57m

$351

Rapid CitySeattle

RAP - SEA

RAPSEA

Rapid City

Wed 9/10

10:15 am-3:52 pm

1 stop6h 37m

Seattle/Tacoma Intl

Mon 9/15

5:07 am-12:38 pm

1 stop6h 31m

$366

Rapid CitySeattle

RAP - SEA

RAPSEA

Rapid City

Wed 8/13

12:47 pm-11:50 pm

1 stop12h 03m

Seattle/Tacoma Intl

Thu 8/21

11:55 pm-11:30 am

1 stop10h 35m

$397

Rapid CitySeattle

RAP - SEA

RAPSEA

Rapid City

Thu 6/19

10:02 pm-3:03 pm

1 stop18h 01m

Seattle/Tacoma Intl

Wed 6/25

3:58 pm-9:12 pm

1 stop28h 14m

$417

Rapid CitySeattle

RAP - SEA

RAPSEA

Rapid City

Wed 8/6

4:42 pm-11:02 pm

1 stop7h 20m

$206

Rapid CitySeattle

RAP - SEA

RAPSEA

Rapid City

Wed 7/30

4:40 pm-12:03 am

2 stops8h 23m

$211

Rapid CitySeattle

RAP - SEA

RAPSEA

Rapid City

Wed 8/6

7:00 am-8:57 pm

3 stops14h 57m

$251

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/21

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 April.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*2 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars
PricelinePrice Accuracy1 starTrust 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 eDreams the most. eDreams 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

How far ahead should I book a flight from Rapid City to Seattle?

Use this chart to determine the optimal time to book a round-trip flight from Rapid City to Seattle. Price data was last updated on April 18, 2025.

The price you pay for your flight from Rapid City to Seattle may vary depending on when you book. For the best chance of a lower fare, look to book 21 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

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 $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.

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 April 22, 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 April 22, 2025.
Delta
8.0
Very good
7,920 reviews

Comfort

7.9

Food

7.3

Boarding

8.2

Overall

8.0

Crew

8.5

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
Delta
8.0
Very good
7,920 reviews
Delta
8.0
Very good
7,920 reviews

Comfort

7.9

Food

7.3

Boarding

8.2

Overall

8.0

Crew

8.5

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
United Airlines
7.4
Good
8,683 reviews
Delta
8.0
Very good
7,920 reviews

Comfort

7.9

Food

7.3

Boarding

8.2

Overall

8.0

Crew

8.5

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
American Airlines
7.2
Good
10,000 reviews
Delta
8.0
Very good
7,920 reviews

Comfort

7.9

Food

7.3

Boarding

8.2

Overall

8.0

Crew

8.5

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

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 Delta. Our recent data shows that you can find tickets from as low as $351 on this airline. Additional options worth looking into are United Airlines and American Airlines, starting at $366 and $397 round-trip. Users have found that Delta is 31% 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 ($206), Delta ($211), and United Airlines ($251).

  • 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 $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 Rapid City?

Book flights to Rapid City 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
Kent
Aberdeen
Lynnwood
Shelton
Silverdale
Redmond
Issaquah

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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 April 22, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$258Average$328FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$339Average$580FlexibilityNo cancel feeOn-time69%

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