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Cheap flights from Rapid City to Washington from $127

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 1/25. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

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Find the cheapest flights from Rapid City to Washington

Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
10:10 pm - 9:36 am
RAP
-
SEA
12h 26m1 stop
Multiple Airlines Logo
10:51 am - 9:20 pm
SEA
-
RAP
9h 29m1 stop
$191Multiple Airlines
Thu, Jan 15 - Sun, Jan 18
Multiple Airlines Logo
10:10 pm - 9:36 am
RAP
-
SEA
12h 26m1 stop
Multiple Airlines Logo
10:51 am - 9:20 pm
SEA
-
RAP
9h 29m1 stop
$197Multiple Airlines
Thu, Jan 15 - Sun, Jan 18
Multiple Airlines Logo
10:10 pm - 4:28 pm
RAP
-
SEA
19h 18m2 stops
Multiple Airlines Logo
10:51 am - 9:20 pm
SEA
-
RAP
9h 29m1 stop
$224Multiple Airlines
Thu, Jan 15 - Sun, Jan 18
United Airlines Logo
7:00 am - 12:46 pm
RAP
-
GEG
6h 46m1 stop
United Airlines Logo
1:48 pm - 8:32 pm
GEG
-
RAP
5h 44m1 stop
$269United Airlines
Fri, Feb 6 - Mon, Feb 9
United Airlines Logo
7:00 am - 1:45 pm
RAP
-
PDX
7h 45m1 stop
United Airlines Logo
3:45 pm - 10:29 pm
PDX
-
RAP
5h 44m1 stop
$279United Airlines
Mon, Jan 19 - Mon, Jan 26
United Airlines Logo
7:00 am - 1:45 pm
RAP
-
PDX
7h 45m1 stop
United Airlines Logo
1:35 pm - 10:29 pm
PDX
-
RAP
7h 54m2 stops
$284United Airlines
Mon, Jan 19 - Mon, Jan 26
United Airlines Logo
5:10 am - 12:33 pm
RAP
-
PDX
8h 23m2 stops
United Airlines Logo
5:35 am - 3:22 pm
PDX
-
RAP
8h 47m2 stops
$289United Airlines
Sat, Jan 24 - Sat, Jan 31
Delta Logo
10:54 am - 6:29 pm
RAP
-
SEA
8h 35m2 stops
Delta Logo
6:05 am - 3:25 pm
SEA
-
RAP
8h 20m1 stop
$299Delta
Wed, Jan 14 - Sat, Jan 17
Delta Logo
6:00 am - 1:03 pm
RAP
-
GEG
8h 03m1 stop
Delta Logo
1:20 pm - 10:28 pm
GEG
-
RAP
8h 08m2 stops
$359Delta
Fri, Feb 6 - Mon, Feb 9
Delta Logo
6:00 am - 2:55 pm
RAP
-
GEG
9h 55m2 stops
Delta Logo
1:20 pm - 10:28 pm
GEG
-
RAP
8h 08m2 stops
$549Delta
Fri, Feb 6 - Mon, Feb 9

Delta flights from Rapid City to State of Washington

Our best Delta deals on Rapid City to State of Washington flight tickets
Delta
Jan 14
RAP10:54 amRapid City
8h 35m
2 stops
SEA6:29 pmSeattle/Tacoma Intl
Jan 17
SEA6:05 amSeattle/Tacoma Intl
8h 20m
1 stop
RAP3:25 pmRapid City
$299
Find similar
Delta
Jan 14
RAP10:54 amRapid City
8h 35m
2 stops
SEA6:29 pmSeattle/Tacoma Intl
Jan 17
SEA1:38 pmSeattle/Tacoma Intl
7h 50m
2 stops
RAP10:28 pmRapid City
$304
Find similar
Delta
Jan 17
RAP6:00 amRapid City
13h 23m
2 stops
SEA6:23 pmSeattle/Tacoma Intl
Jan 20
SEA3:35 pmSeattle/Tacoma Intl
5h 53m
1 stop
RAP10:28 pmRapid City
$318
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
Feb 6
RAP7:00 amRapid City
6h 46m
1 stop
GEG12:46 pmSpokane
Feb 9
GEG1:48 pmSpokane
5h 44m
1 stop
RAP8:32 pmRapid City
$269
Find similar
United Airlines
Jan 19
RAP7:00 amRapid City
7h 45m
1 stop
PDX1:45 pmPortland
Jan 26
PDX3:45 pmPortland
5h 44m
1 stop
RAP10:29 pmRapid City
$279
Find similar
United Airlines
Jan 19
RAP7:00 amRapid City
7h 45m
1 stop
PDX1:45 pmPortland
Jan 26
PDX1:35 pmPortland
7h 54m
2 stops
RAP10:29 pmRapid City
$284
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 December 28, 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 CitySeattle

RAP - SEA

RAPSEA

Rapid City

Thu 1/15

10:10 pm-9:36 am

1 stop12h 26m

Seattle/Tacoma Intl

Sun 1/18

10:51 am-9:20 pm

1 stop9h 29m

$191

Rapid CitySeattle

RAP - SEA

RAPSEA

Rapid City

Thu 1/15

10:10 pm-9:36 am

1 stop12h 26m

Seattle/Tacoma Intl

Sun 1/18

10:51 am-9:20 pm

1 stop9h 29m

$197

Rapid CitySeattle

RAP - SEA

RAPSEA

Rapid City

Thu 1/15

10:10 pm-4:28 pm

2 stops19h 18m

Seattle/Tacoma Intl

Sun 1/18

10:51 am-9:20 pm

1 stop9h 29m

$224

Rapid CitySpokane

RAP - GEG

RAPGEG

Rapid City

Fri 2/6

7:00 am-12:46 pm

1 stop6h 46m

Spokane

Mon 2/9

1:48 pm-8:32 pm

1 stop5h 44m

$269

Rapid CityPortland

RAP - PDX

RAPPDX

Rapid City

Mon 1/19

7:00 am-1:45 pm

1 stop7h 45m

Portland

Mon 1/26

3:45 pm-10:29 pm

1 stop5h 44m

$279

Rapid CityPortland

RAP - PDX

RAPPDX

Rapid City

Mon 1/19

7:00 am-1:45 pm

1 stop7h 45m

Portland

Mon 1/26

1:35 pm-10:29 pm

2 stops7h 54m

$284

Rapid CityPortland

RAP - PDX

RAPPDX

Rapid City

Sat 1/24

5:10 am-12:33 pm

2 stops8h 23m

Portland

Sat 1/31

5:35 am-3:22 pm

2 stops8h 47m

$289

Rapid CitySeattle

RAP - SEA

RAPSEA

Rapid City

Wed 1/14

10:54 am-6:29 pm

2 stops8h 35m

Seattle/Tacoma Intl

Sat 1/17

6:05 am-3:25 pm

1 stop8h 20m

$299

Rapid CitySpokane

RAP - GEG

RAPGEG

Rapid City

Fri 2/6

6:00 am-1:03 pm

1 stop8h 03m

Spokane

Mon 2/9

1:20 pm-10:28 pm

2 stops8h 08m

$359

Rapid CitySpokane

RAP - GEG

RAPGEG

Rapid City

Fri 2/6

6:00 am-2:55 pm

2 stops9h 55m

Spokane

Mon 2/9

1:20 pm-10:28 pm

2 stops8h 08m

$549

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 October is, on average, the cheapest month to fly to State of Washington from Rapid City, with most prices found around $321. If you aren’t able to travel to State of Washington during the month of October, then flying in February is also cheap. Prices for this month can be found on momondo for an average of $328.

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

Fastest flight time

5h 45m

Direct flights

None
The fastest flight from Rapid City to State of Washington takes 5h 45m
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
United AirlinesPriceFrom $248Free CancellationRating
7.4
9,113 reviews
Search United Airlines flights
DeltaPriceFrom $258Free CancellationRating
7.9
8,019 reviews
Search Delta 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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