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Rapid City

$221+ Cheap flights from Washington to Rapid City (RAP)

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 9/28. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — RAP
Oct 14 — Oct 211
Tue 10/14
Tue 10/21
1 adult, Economy
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Cheap flight deals from Washington to Rapid City

Keep the following information in mind while searching for Washington to Rapid City flight deals. Data was last updated September 14, 2025.

Round-trip from

$249
(United Airlines)

One-way from

$221
(United Airlines)

Popular in

October

Cheapest in

January

Average price

$588
From Washington to Rapid City
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One-way flight from Washington to Rapid City
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Highest demand for flights based on searches. 19% potential increase in price ($130 potential increase over avg. RT price).
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Cheapest flight prices on average. 5% potential price decrease ($25 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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Find flight deals from Washington to Rapid City

Cheapest flights from Washington to Rapid City
Explore the most affordable flight options available from Washington to Rapid City. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 14, 2025.

This United Airlines deal was found by Cheapflights users on 9/11. 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.
Sat 10/111:38 pmGEG - RAP
1 stop7h 34mUnited Airlines
Sat 10/183:20 pmRAP - GEG
1 stop6h 04mUnited Airlines
Deal found 9/11$249
This United Airlines deal was found by Cheapflights users on 9/12. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/2712:45 pmPSC - RAP
1 stop6h 49mUnited Airlines
Wed 10/13:20 pmRAP - PSC
1 stop6h 19mUnited Airlines
Deal found 9/12$259
This Delta deal was found by Cheapflights users on 9/12. 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.
Fri 10/2412:40 amPDX - RAP
1 stop8h 13mDelta
Wed 10/296:05 amRAP - PDX
1 stop7h 45mDelta
Deal found 9/12$259
This American Airlines deal was found by Cheapflights users on 9/12. 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.
Fri 10/315:22 amSEA - RAP
1 stop9h 43mAmerican Airlines
Tue 11/41:42 pmRAP - SEA
1 stop11h 00mAmerican Airlines
Deal found 9/12$259
This United Airlines deal was found by Cheapflights users on 9/12. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/313:48 pmSEA - RAP
1 stop5h 11mUnited Airlines
Tue 11/48:45 amRAP - SEA
2 stops10h 40mUnited Airlines
Deal found 9/12$264
This Delta deal was found by Cheapflights users on 9/12. 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.
Fri 10/311:30 pmSEA - RAP
2 stops8h 06mDelta
Tue 11/410:33 amRAP - SEA
2 stops8h 51mDelta
Deal found 9/12$269
This United Airlines deal was found by Cheapflights users on 9/11. 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.
Sat 9/278:47 amSEA - RAP
2 stops12h 25mUnited Airlines
Sat 10/45:30 amRAP - SEA
1 stop5h 29mUnited Airlines
Deal found 9/11$279
This United Airlines deal was found by Cheapflights users on 9/14. 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 10/165:00 amPDX - RAP
1 stop6h 37mUnited Airlines
Mon 10/205:30 amRAP - PDX
1 stop4h 59mUnited Airlines
Deal found 9/14$281
This Delta deal was found by Cheapflights users on 9/12. 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.
Wed 10/156:00 amSEA - RAP
1 stop6h 45mDelta
Tue 10/214:34 pmRAP - SEA
1 stop8h 23mDelta
Deal found 9/12$314
This United Airlines deal was found by Cheapflights users on 9/13. 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 10/73:35 pmSEA - RAP
1 stop5h 37mUnited Airlines
Wed 10/811:15 amRAP - SEA
1 stop5h 17mUnited Airlines
Deal found 9/13$321
This Delta deal was found by Cheapflights users on 9/12. 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 10/2811:55 pmSEA - RAP
1 stop8h 58mDelta
Thu 10/3010:33 amRAP - SEA
2 stops8h 51mDelta
Deal found 9/12$326
This Delta deal was found by Cheapflights users on 9/12. 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.
Wed 11/512:40 amPDX - RAP
1 stop8h 13mDelta
Sun 11/92:51 pmRAP - PDX
1 stop6h 56mDelta
Deal found 9/12$329

Cheapflights Fare Finder

 
Customize your flight search to find flights from Washington to Rapid City 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 September 14, 2025.
Use the filters below to find and compare flights from Washington to Rapid City that are best for you.

Fly from

Washington

Fly to

Rapid City

Route

Depart

Return

Price

SpokaneRapid City

GEG - RAP

GEGRAP

Spokane

Sat 10/11

1:38 pm-10:12 pm

1 stop7h 34m

Rapid City

Sat 10/18

3:20 pm-8:24 pm

1 stop6h 04m

$249

PortlandRapid City

PDX - RAP

PDXRAP

Portland

Fri 10/24

12:40 am-9:53 am

1 stop8h 13m

Rapid City

Wed 10/29

6:05 am-12:50 pm

1 stop7h 45m

$259

SeattleRapid City

SEA - RAP

SEARAP

Seattle/Tacoma Intl

Fri 10/31

5:22 am-4:05 pm

1 stop9h 43m

Rapid City

Tue 11/4

1:42 pm-11:42 pm

1 stop11h 00m

$259

PascoRapid City

PSC - RAP

PSCRAP

Pasco Tri Cities

Sat 9/27

12:45 pm-8:34 pm

1 stop6h 49m

Rapid City

Wed 10/1

3:20 pm-8:39 pm

1 stop6h 19m

$259

SeattleRapid City

SEA - RAP

SEARAP

Seattle/Tacoma Intl

Wed 11/5

11:55 pm-9:53 am

1 stop8h 58m

Rapid City

Sat 11/8

2:25 pm-8:20 pm

1 stop6h 55m

$259

PortlandRapid City

PDX - RAP

PDXRAP

Portland

Wed 10/8

5:00 am-10:57 am

1 stop4h 57m

Rapid City

Tue 10/14

7:00 am-1:03 pm

1 stop7h 03m

$259

SeattleRapid City

SEA - RAP

SEARAP

Seattle/Tacoma Intl

Fri 10/31

1:30 pm-10:36 pm

2 stops8h 06m

Rapid City

Tue 11/4

10:33 am-6:24 pm

2 stops8h 51m

$269

SeattleRapid City

SEA - RAP

SEARAP

Seattle/Tacoma Intl

Sat 9/27

8:47 am-10:12 pm

2 stops12h 25m

Rapid City

Sat 10/4

5:30 am-9:59 am

1 stop5h 29m

$279

PortlandRapid City

PDX - RAP

PDXRAP

Portland

Thu 10/16

5:00 am-12:37 pm

1 stop6h 37m

Rapid City

Mon 10/20

5:30 am-9:29 am

1 stop4h 59m

$281

SeattleRapid City

SEA - RAP

SEARAP

Seattle/Tacoma Intl

Wed 10/15

6:00 am-1:45 pm

1 stop6h 45m

Rapid City

Tue 10/21

6:05 am-4:32 pm

2 stops11h 27m

$319

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/13

Showing 1-10 of 29 results
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Best time to book a flight from Washington to Rapid City

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

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

Currently, January is the cheapest month in which you can book a flight from State of Washington to Rapid City (average of $348). Flying from State of Washington to Rapid City in June is currently the most expensive (average of $502). 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 WA to RAP?

Find hourly flight availability from Washington to Rapid City. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated September 14, 2025.

When flying from State of Washington to Rapid City, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Related info for your journey

Find useful and relevant information for your journey from Washington to Rapid City. 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 into for flights to Rapid City from Washington?

    Rapid City (RAP) is the airport you will fly into if you book a flight from Washington to Rapid City. It is only a 9.0 mi journey from Rapid City (RAP) to Rapid City’s city center.

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

    A quick flight from State of Washington to Rapid City can take about 7h 34m. United Airlines provides one of the quickest options available for as low as $249. State of Washington and Rapid City are separated by a distance of 738 mi. Both multi-stop and nonstop flights can be found to your destination and back.

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

    The most popular route from State of Washington to Rapid City is Seattle/Tacoma Intl - Rapid City. You may also consider Portland - Rapid City or Spokane - Rapid City.

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

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

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

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

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

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

    Currently, January is the cheapest month in which you can book a flight from State of Washington to Rapid City (average of $348). Flying from State of Washington to Rapid City in June is currently the most expensive (average of $502). 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
Deadwood
Keystone
Sturgis
Spearfish

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Alternative routes for Washington to Rapid City

See prices for flight routes from nearby airports that may be better suited for you.
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Top 4 airlines flying from Washington to Rapid City

Discover the top 4 airlines that operate flights from Washington to Rapid City. 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 September 14, 2025.
AirlineCheapestAverageFlexibilityOn-time
Sun Country AirCheapest$137Average$443FlexibilityNo cancel feeOn-time83%
United AirlinesCheapest$252Average$495FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$258Average$396FlexibilityNo cancel feeOn-time71%
DeltaCheapest$258Average$358FlexibilityNo cancel feeOn-timeN/A

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