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Cheap flights from Rapid City to Washington from $143

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Rapid City to Washington departing on 9/25. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Cheap round-trip flights

Delta Logo
6:05 am - 1:05 pmRAP-GEG
8h 00m1 stop
Delta Logo
2:17 pm - 10:36 pmGEG-RAP
7h 19m1 stop
$249Delta
Find Deal
Sat, Oct 25 - Wed, Oct 29
Delta Logo
6:05 am - 1:05 pmRAP-GEG
8h 00m1 stop
Delta Logo
1:10 pm - 10:36 pmGEG-RAP
8h 26m2 stops
$254Delta
Find Deal
Sat, Oct 25 - Wed, Oct 29
American Airlines Logo
5:34 am - 1:10 pmRAP-SEA
8h 36m1 stop
American Airlines Logo
5:24 am - 1:50 pmSEA-RAP
7h 26m1 stop
$259American Airlines
Find Deal
Wed, Nov 19 - Mon, Nov 24
Delta Logo
2:20 pm - 8:32 pmRAP-SEA
7h 12m1 stop
Delta Logo
1:30 pm - 10:10 pmSEA-RAP
7h 40m2 stops
$264Delta
Find Deal
Wed, Nov 19 - Mon, Nov 24
United Airlines Logo
5:59 pm - 10:42 pmRAP-PDX
5h 43m1 stop
United Airlines Logo
4:07 pm - 9:59 pmPDX-RAP
4h 52m1 stop
$289United Airlines
Find Deal
Fri, Sep 5 - Tue, Sep 9
United Airlines Logo
8:32 am - 3:05 pmRAP-PDX
7h 33m1 stop
United Airlines Logo
1:45 pm - 9:59 pmPDX-RAP
7h 14m2 stops
$294United Airlines
Find Deal
Fri, Sep 5 - Tue, Sep 9
United Airlines Logo
4:47 pm - 12:38 amRAP-PDX
8h 51m2 stops
United Airlines Logo
1:45 pm - 9:59 pmPDX-RAP
7h 14m2 stops
$299United Airlines
Find Deal
Fri, Sep 5 - Tue, Sep 9
Delta Logo
2:25 pm - 10:34 pmRAP-GEG
9h 09m2 stops
Delta Logo
1:10 pm - 10:36 pmGEG-RAP
8h 26m2 stops
$304Delta
Find Deal
Sat, Oct 25 - Wed, Oct 29
Logo
5:39 pm - 11:11 amRAP-PDX
18h 32m1 stop
Logo
10:17 am - 11:22 amPDX-RAP
48h 05m2 stops
$380
Find Deal
Thu, Sep 4 - Mon, Sep 8
American Airlines Logo
5:00 pm - 6:39 pmRAP-GEG
26h 39m1 stop
American Airlines Logo
6:00 am - 4:08 pmGEG-RAP
9h 08m1 stop
$519American Airlines
Find Deal
Fri, Sep 19 - Sun, Sep 28

American Airlines flights from Rapid City to State of Washington

Our best American Airlines deals on Rapid City to State of Washington flight tickets
American Airlines
Nov 19
RAP5:34 amRapid City
8h 36m
1 stop
SEA1:10 pmSeattle/Tacoma Intl
Nov 24
SEA5:24 amSeattle/Tacoma Intl
7h 26m
1 stop
RAP1:50 pmRapid City
$259
Find similar
American Airlines
Sep 19
RAP5:00 pmRapid City
26h 39m
1 stop
GEG6:39 pmSpokane
Sep 28
GEG6:00 amSpokane
9h 08m
1 stop
RAP4:08 pmRapid City
$519
Find similar
American Airlines
Aug 22
RAP12:10 pmRapid City
8h 06m
1 stop
SEA7:16 pmSeattle/Tacoma Intl
Aug 24
SEA11:42 amSeattle/Tacoma Intl
8h 17m
1 stop
RAP8:59 pmRapid City
$560
Find similar

United Airlines flights from Rapid City to State of Washington

Our best United Airlines deals on Rapid City to State of Washington flight tickets
United Airlines
Sep 5
RAP5:59 pmRapid City
5h 43m
1 stop
PDX10:42 pmPortland
Sep 9
PDX4:07 pmPortland
4h 52m
1 stop
RAP9:59 pmRapid City
$289
Find similar
United Airlines
Sep 5
RAP8:32 amRapid City
7h 33m
1 stop
PDX3:05 pmPortland
Sep 9
PDX1:45 pmPortland
7h 14m
2 stops
RAP9:59 pmRapid City
$294
Find similar
United Airlines
Sep 5
RAP4:47 pmRapid City
8h 51m
2 stops
PDX12:38 amPortland
Sep 9
PDX1:45 pmPortland
7h 14m
2 stops
RAP9:59 pmRapid City
$299
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Rapid City to State of 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, momondo users made 832,500 searches. Data last updated August 21, 2025.
Use the filters below to find and compare flights from Rapid City to Washington that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Rapid CitySpokane

RAP - GEG

RAPGEG

Rapid City

Sat 10/25

6:05 am-1:05 pm

1 stop8h 00m

Spokane

Wed 10/29

2:17 pm-10:36 pm

1 stop7h 19m

$249

Rapid CitySpokane

RAP - GEG

RAPGEG

Rapid City

Sat 10/25

6:05 am-1:05 pm

1 stop8h 00m

Spokane

Wed 10/29

1:10 pm-10:36 pm

2 stops8h 26m

$254

Rapid CitySeattle

RAP - SEA

RAPSEA

Rapid City

Wed 11/19

5:34 am-1:10 pm

1 stop8h 36m

Seattle/Tacoma Intl

Mon 11/24

5:24 am-1:50 pm

1 stop7h 26m

$259

Rapid CitySeattle

RAP - SEA

RAPSEA

Rapid City

Wed 11/19

2:20 pm-8:32 pm

1 stop7h 12m

Seattle/Tacoma Intl

Mon 11/24

1:30 pm-10:10 pm

2 stops7h 40m

$264

Rapid CityPortland

RAP - PDX

RAPPDX

Rapid City

Fri 9/5

5:59 pm-10:42 pm

1 stop5h 43m

Portland

Tue 9/9

4:07 pm-9:59 pm

1 stop4h 52m

$289

Rapid CityPortland

RAP - PDX

RAPPDX

Rapid City

Fri 9/5

8:32 am-3:05 pm

1 stop7h 33m

Portland

Tue 9/9

1:45 pm-9:59 pm

2 stops7h 14m

$294

Rapid CityPortland

RAP - PDX

RAPPDX

Rapid City

Fri 9/5

4:47 pm-12:38 am

2 stops8h 51m

Portland

Tue 9/9

1:45 pm-9:59 pm

2 stops7h 14m

$299

Rapid CitySpokane

RAP - GEG

RAPGEG

Rapid City

Sat 10/25

2:25 pm-10:34 pm

2 stops9h 09m

Spokane

Wed 10/29

1:10 pm-10:36 pm

2 stops8h 26m

$304

Rapid CityPortland

RAP - PDX

RAPPDX

Rapid City

Thu 9/4

5:39 pm-11:11 am

1 stop18h 32m

Portland

Mon 9/8

10:17 am-11:22 am

2 stops48h 05m

$380

Rapid CitySpokane

RAP - GEG

RAPGEG

Rapid City

Fri 9/19

5:00 pm-6:39 pm

1 stop26h 39m

Spokane

Sun 9/28

6:00 am-4:08 pm

1 stop9h 08m

$519

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Washington from

How to get the cheapest flight ticket from Rapid City to State of Washington

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly to State of Washington?

The month of March is, on average, the cheapest month to fly to State of Washington from Rapid City, with most prices found around $282. If you aren’t able to travel to State of Washington during the month of March, then flying in February is also cheap. Prices for this month can be found on momondo for an average of $328.

What is the cheapest day to depart on your flight to State of Washington?

The cheapest day to depart from Rapid City to State of Washington is on a Tuesday. Travelers who choose to depart for State of Washington on a Tuesday will often find tickets for as low as $589. When flying out on a Sunday, the most expensive travel day of the week, you can expect to see flight prices from Rapid City to State of Washington for around $700.

What is the cheapest time of day to depart on your flight to State of Washington?

The cheapest time of day to fly to State of Washington is at noon when flights can be purchased for as low as $582. If you have a flexible travel schedule, then try to avoid flying in the morning when prices are $632 on average. Flights to State of Washington from Rapid City in the morning are generally more expensive because this time of day is more convenient for travelers’ schedules.

Cheap Rapid City to State of Washington flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Rapid City to State of Washington

Direct flights

None
There are no direct flights from Rapid City to State of Washington. There are no popular flight routes from Rapid City to State of Washington.
Search flight deals

  • When did momondo last update prices for flights from Rapid City Airport to Washington?

    Prices for flights from Rapid City Airport to Washington are refreshed on a daily basis.

  • How many operators does momondo search for flights from Rapid City Airport to Washington?

  • How old do you have to be to fly from Rapid City Airport to Washington?

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Rapid City Airport to Washington.

  • What documentation or ID do you need to fly to Washington?

    The travel and health documents required for your trip to Washington can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Washington. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

Best airlines flying from Rapid City to State of Washington

Compare and see reviews for airlines that fly from Rapid City to State of Washington with momondo
Airline
Rating
Free Cancellation
Price
DeltaPriceFrom $258Free CancellationRating
7.9
7,981 reviews
Search Delta flights
United AirlinesPriceFrom $267Free CancellationRating
7.4
8,930 reviews
Search United Airlines flights

Why use momondo?

Why should I use momondo to find a flight deal from Rapid City to Washington?

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Rapid City to Washington. momondo saves you time and could save you money on your trip.

Can I find flights from Rapid City to Washington with flexible booking policies on momondo?

momondo does allow users to show only those flights to Washington from Rapid City which offer a flexible booking policy as well as other useful filters and features.

How can momondo help me find flights from Rapid City to Washington?

Once you have performed a search for Rapid City to Washington flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

I’m not ready to book a flight from Rapid City to Washington right now. Can momondo alert me if prices change?

Price alerts on flights to Washington from Rapid City are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.

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