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$173+ Cheap flights from Rapid City (RAP) to Washington

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 Washington

Cheapest flights from Rapid City to Washington
Explore the most affordable flight options available from Rapid City to Washington. 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 1/27. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/267:00 am
RAP
-
GEG
1 stop6h 42m
United Airlines
Thu 3/55:00 am
GEG
-
RAP
1 stop7h 13m
United Airlines
Deal found 1/27$269
This Delta deal was found by Cheapflights users on 1/24. 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.
Thu 2/126:00 am
RAP
-
GEG
1 stop8h 08m
Delta
Sat 2/142:05 pm
GEG
-
RAP
1 stop7h 22m
Delta
Deal found 1/24$274
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.
Sun 2/226:00 am
RAP
-
PDX
1 stop7h 44m
Delta
Sun 3/16:00 am
PDX
-
RAP
1 stop8h 44m
Delta
Deal found 1/26$279
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 1/27. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/116:00 am
RAP
-
GEG
1 stop8h 03m
Delta
Sun 2/156:45 am
GEG
-
RAP
1 stop7h 59m
Delta
Deal found 1/27$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.
Wed 2/116:00 am
RAP
-
PDX
1 stop7h 46m
Delta
Sun 2/156:00 am
PDX
-
RAP
1 stop8h 44m
Delta
Deal found 1/26$309
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 1/27. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/34:40 pm
RAP
-
GEG
1 stop5h 43m
United Airlines
Tue 2/101:48 pm
GEG
-
RAP
1 stop5h 44m
United Airlines
Deal found 1/27$309
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/36:00 am
RAP
-
GEG
1 stop8h 03m
Delta
Tue 2/101:15 pm
GEG
-
RAP
2 stops8h 13m
Delta
Deal found 1/27$314
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 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.
Sat 2/77:00 am
RAP
-
PSC
1 stop7h 46m
United Airlines
Mon 2/95:00 am
PSC
-
RAP
1 stop7h 12m
United Airlines
Deal found 1/26$333

Find flight deals from Rapid City to Washington

Keep the following information in mind while searching for Rapid City to Washington flight deals. Data was last updated January 27, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$269
(United Airlines)

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 Washington
Search Deals
One-way flight from Rapid City to Washington
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 Washington 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 Washington that are best for you.

Fly from

Rapid City

Fly to

Washington

Route

Depart

Return

Price

Rapid CitySpokane

RAP - GEG

RAPGEG

Rapid City

Thu 2/26

7:00 am-12:42 pm

1 stop6h 42m

Spokane

Thu 3/5

5:00 am-1:13 pm

1 stop7h 13m

$269

Rapid CitySpokane

RAP - GEG

RAPGEG

Rapid City

Thu 5/28

11:15 am-3:05 pm

1 stop4h 50m

Spokane

Thu 6/4

4:03 pm-10:24 pm

1 stop5h 21m

$269

Rapid CitySpokane

RAP - GEG

RAPGEG

Rapid City

Thu 2/12

6:00 am-1:08 pm

1 stop8h 08m

Spokane

Sat 2/14

2:05 pm-10:27 pm

1 stop7h 22m

$274

Rapid CitySpokane

RAP - GEG

RAPGEG

Rapid City

Thu 2/26

6:00 am-1:08 pm

1 stop8h 08m

Spokane

Thu 3/5

11:22 am-10:27 pm

2 stops10h 05m

$274

Rapid CityPortland

RAP - PDX

RAPPDX

Rapid City

Sun 2/22

6:00 am-12:44 pm

1 stop7h 44m

Portland

Sun 3/1

6:00 am-3:44 pm

1 stop8h 44m

$279

Rapid CitySpokane

RAP - GEG

RAPGEG

Rapid City

Wed 2/11

6:00 am-1:03 pm

1 stop8h 03m

Spokane

Sun 2/15

6:45 am-3:44 pm

1 stop7h 59m

$279

Rapid CityPortland

RAP - PDX

RAPPDX

Rapid City

Wed 2/11

6:00 am-12:46 pm

1 stop7h 46m

Portland

Sun 2/15

6:00 am-3:44 pm

1 stop8h 44m

$309

Rapid CityPasco

RAP - PSC

RAPPSC

Rapid City

Sat 2/7

7:00 am-1:46 pm

1 stop7h 46m

Pasco Tri Cities

Mon 2/9

5:00 am-1:12 pm

1 stop7h 12m

$333

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

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/26

Showing 1-10 of 45 results
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Best time to book a flight from Rapid City to Washington

Have a flexible travel schedule? Discover the best time to fly to Washington 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 Washington

What is the cheapest month to book a flight from Rapid City to State of Washington?

Currently, January is the cheapest month in which you can book a flight from Rapid City to State of Washington (average of $200). Flying from Rapid City to State of Washington in April is currently the most expensive (average of $422). 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 Washington

Get insights into the airlines that provide service to Washington. 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 Washington. Reviews last updated January 27, 2026.
See what other customers who have flown with Delta and United Airlines from Rapid City to Washington have to say. 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
7.9
Good
8,119 reviews

Food

7.2

Overall

7.9

Crew

8.5

Comfort

7.9

Boarding

8.1

Entertainment

7.8

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

Food

7.2

Overall

7.9

Crew

8.5

Comfort

7.9

Boarding

8.1

Entertainment

7.8

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

Food

7.2

Overall

7.9

Crew

8.5

Comfort

7.9

Boarding

8.1

Entertainment

7.8

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 Washington. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly from for flights from Rapid City to Washington?

    Most people fly from Rapid City (RAP) if they book a flight from Rapid City to Washington. Rapid City is conveniently located just 9.0 mi from Rapid City’s city center.

  • How long is the flight from Rapid City to State of Washington?

    United Airlines, Delta, and American Airlines can get you from Rapid City to State of Washington in just under 6h 42m. Your travel time can differ by up to 3h 04m. The distance from Rapid City to State of Washington is about 738 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

  • What are the cheapest airlines to fly from Rapid City to State of Washington one-way?

    One-way options have recently been found by users for as low as $137 on Sun Country Air. Other airlines that offer cheap prices include American Airlines from $180 and United Airlines from $215 one-way.

  • What are the most popular routes from Rapid City to State of Washington?

    While some choose either Rapid City - Spokane or Rapid City - Portland, Rapid City - Seattle/Tacoma Intl is the most popular route from Rapid City to State of Washington.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Rapid City to Washington 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 State of Washington?

    Currently, January is the cheapest month in which you can book a flight from Rapid City to State of Washington (average of $200). Flying from Rapid City to State of Washington in April is currently the most expensive (average of $422). 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

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Top 2 airlines flying from Rapid City to Washington

Discover the top 2 airlines that operate flights from Rapid City to Washington. 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
United AirlinesCheapest$240Average$479FlexibilityNo cancel feeOn-time69%
DeltaCheapest$258Average$398FlexibilityNo cancel feeOn-timeN/A

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