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Cheap flights from Rapid City to Seattle from $157

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 Seattle departing on 7/5. 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
1 adult, Economy, 0 bags

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Find the cheapest flights from Rapid City to Seattle

Cheap round-trip flights

Enter your travel dates to find the best prices.
Delta Logo
6:00 am - 12:15 pm
RAP
-
SEA
7h 15m
1 stop
Delta Logo
6:00 am - 3:15 pm
SEA
-
RAP
8h 15m
1 stop
$319Delta
Sat, Apr 25 - Sat, May 2
United Airlines Logo
5:53 pm - 11:11 pm
RAP
-
SEA
6h 18m
1 stop
United Airlines Logo
5:00 am - 12:24 pm
SEA
-
RAP
6h 24m
1 stop
$339United Airlines
Wed, Sep 9 - Sun, Sep 20
United Airlines Logo
5:35 pm - 10:59 pm
RAP
-
SEA
6h 24m
1 stop
United Airlines Logo
5:05 am - 1:09 pm
SEA
-
RAP
7h 04m
1 stop
$344United Airlines
Thu, Apr 30 - Sun, May 3
American Airlines Logo
4:58 pm - 12:15 am
RAP
-
SEA
8h 17m
1 stop
American Airlines Logo
11:30 pm - 9:49 am
SEA
-
RAP
9h 19m
1 stop
$350American Airlines
Thu, Aug 27 - Tue, Sep 1
United Airlines Logo
4:15 pm - 10:33 pm
RAP
-
SEA
7h 18m
1 stop
United Airlines Logo
5:00 am - 1:08 pm
SEA
-
RAP
7h 08m
1 stop
$369United Airlines
Thu, Apr 23 - Sun, Apr 26
United Airlines Logo
4:15 pm - 10:33 pm
RAP
-
SEA
7h 18m
1 stop
United Airlines Logo
5:00 am - 1:08 pm
SEA
-
RAP
7h 08m
1 stop
$375United Airlines
Thu, Apr 23 - Sun, Apr 26
American Airlines Logo
11:41 am - 7:51 pm
RAP
-
SEA
9h 10m
1 stop
American Airlines Logo
11:30 pm - 9:49 am
SEA
-
RAP
9h 19m
1 stop
$379American Airlines
Thu, Sep 24 - Thu, Oct 1
United Airlines Logo
10:55 am - 7:48 pm
RAP
-
SEA
9h 53m
2 stops
United Airlines Logo
5:05 am - 11:35 am
SEA
-
RAP
5h 30m
1 stop
$385United Airlines
Thu, Apr 30 - Sun, May 3
Delta Logo
3:55 pm - 11:59 pm
RAP
-
SEA
9h 04m
2 stops
Delta Logo
6:00 am - 3:15 pm
SEA
-
RAP
8h 15m
1 stop
$389Delta
Tue, Apr 14 - Sat, Apr 18
American Airlines Logo
4:58 pm - 12:15 am
RAP
-
SEA
8h 17m
1 stop
American Airlines Logo
11:30 pm - 9:49 am
SEA
-
RAP
9h 19m
1 stop
$390American Airlines
Thu, Aug 27 - Tue, Sep 1

Delta flights from Rapid City to Seattle

Our best Delta deals on Rapid City to Seattle flight tickets
Delta
Apr 25
RAP6:00 amRapid City
7h 15m
1 stop
SEA12:15 pmSeattle/Tacoma Intl
May 2
SEA6:00 amSeattle/Tacoma Intl
8h 15m
1 stop
RAP3:15 pmRapid City
$319
Delta
Apr 14
RAP3:55 pmRapid City
9h 04m
2 stops
SEA11:59 pmSeattle/Tacoma Intl
Apr 18
SEA6:00 amSeattle/Tacoma Intl
8h 15m
1 stop
RAP3:15 pmRapid City
$389
Delta
Aug 27
RAP4:00 pmRapid City
9h 01m
2 stops
SEA12:01 amSeattle/Tacoma Intl
Sep 1
SEA11:53 pmSeattle/Tacoma Intl
9h 05m
1 stop
RAP9:58 amRapid City
$422

American Airlines flights from Rapid City to Seattle

Our best American Airlines deals on Rapid City to Seattle flight tickets
American Airlines
Aug 27
RAP4:58 pmRapid City
8h 17m
1 stop
SEA12:15 amSeattle/Tacoma Intl
Sep 1
SEA11:30 pmSeattle/Tacoma Intl
9h 19m
1 stop
RAP9:49 amRapid City
$350
American Airlines
Sep 24
RAP11:41 amRapid City
9h 10m
1 stop
SEA7:51 pmSeattle/Tacoma Intl
Oct 1
SEA11:30 pmSeattle/Tacoma Intl
9h 19m
1 stop
RAP9:49 amRapid City
$379
American Airlines
Aug 27
RAP4:58 pmRapid City
8h 17m
1 stop
SEA12:15 amSeattle/Tacoma Intl
Sep 1
SEA11:30 pmSeattle/Tacoma Intl
9h 19m
1 stop
RAP9:49 amRapid City
$390

momondo 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, momondo users made 832,500 searches. Data last updated March 31, 2026.
Use the filters below to find and compare flights from Rapid City to Seattle that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Rapid CitySeattle

RAP - SEA

RAPSEA

Rapid City

Sat 4/25

6:00 am-12:15 pm

1 stop7h 15m

Seattle/Tacoma Intl

Sat 5/2

6:00 am-3:15 pm

1 stop8h 15m

$319
Quickest round-trip

Rapid CitySeattle

RAP - SEA

RAPSEA

Rapid City

Wed 9/9

5:53 pm-11:11 pm

1 stop6h 18m

Seattle/Tacoma Intl

Sun 9/20

5:00 am-12:24 pm

1 stop6h 24m

$339

Rapid CitySeattle

RAP - SEA

RAPSEA

Rapid City

Thu 4/30

5:35 pm-10:59 pm

1 stop6h 24m

Seattle/Tacoma Intl

Sun 5/3

5:05 am-1:09 pm

1 stop7h 04m

$344

Rapid CitySeattle

RAP - SEA

RAPSEA

Rapid City

Thu 8/27

4:58 pm-12:15 am

1 stop8h 17m

Seattle/Tacoma Intl

Tue 9/1

11:30 pm-9:49 am

1 stop9h 19m

$350

Rapid CitySeattle

RAP - SEA

RAPSEA

Rapid City

Thu 4/23

4:15 pm-10:33 pm

1 stop7h 18m

Seattle/Tacoma Intl

Sun 4/26

5:00 am-1:08 pm

1 stop7h 08m

$369

Rapid CitySeattle

RAP - SEA

RAPSEA

Rapid City

Thu 4/23

4:15 pm-10:33 pm

1 stop7h 18m

Seattle/Tacoma Intl

Sun 4/26

5:00 am-1:08 pm

1 stop7h 08m

$375

Rapid CitySeattle

RAP - SEA

RAPSEA

Rapid City

Thu 9/24

11:41 am-7:51 pm

1 stop9h 10m

Seattle/Tacoma Intl

Thu 10/1

11:30 pm-9:49 am

1 stop9h 19m

$379

Rapid CitySeattle

RAP - SEA

RAPSEA

Rapid City

Thu 4/30

10:55 am-7:48 pm

2 stops9h 53m

Seattle/Tacoma Intl

Sun 5/3

5:05 am-11:35 am

1 stop5h 30m

$385

Rapid CitySeattle

RAP - SEA

RAPSEA

Rapid City

Tue 4/14

3:55 pm-11:59 pm

2 stops9h 04m

Seattle/Tacoma Intl

Sat 4/18

6:00 am-3:15 pm

1 stop8h 15m

$389

Rapid CitySeattle

RAP - SEA

RAPSEA

Rapid City

Thu 8/27

4:58 pm-12:15 am

1 stop8h 17m

Seattle/Tacoma Intl

Tue 9/1

11:30 pm-9:49 am

1 stop9h 19m

$390

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 Seattle from

How to get the cheapest flight ticket from Rapid City to Seattle

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 typical price of a round-trip flight between Rapid City and Seattle?

What is the cheapest month to fly to Seattle?

In general, February is the cheapest month to fly from Rapid City to Seattle. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $288. If you don’t want to visit Seattle in February, then you should wait until October to fly from Rapid City, when ticket prices are also cheap, with an average price of $321.

Can stopping save me money on Rapid City to Seattle flights?

You could potentially save up to 7% on your flight if you consider stops on a Rapid City to Seattle flight.

When to book flights from Rapid City to Seattle

Are you open to changing your travel dates? Check out the ideal times to fly from Rapid City to Seattle according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Rapid City to Seattle (RAP to SEA) flight deals and tips

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

Fastest flight time

5h 53m

Direct flights

None
The fastest flight from Rapid City to Seattle takes 5h 53m
There are no direct flights from Rapid City to Seattle. There are no popular flight routes from Rapid City to Seattle.
Search flight deals

  • How far is Rapid City to Seattle/Tacoma Intl by plane?

    The straight-line distance from Rapid City to Seattle/Tacoma Intl is 948.2 mi. By plane, this route typically takes 5h 53m.

  • When did momondo last update prices for flights from Rapid City Airport to Seattle/Tacoma Intl Airport?

    Prices for flights from Rapid City Airport to Seattle/Tacoma Intl Airport are updated daily.

  • How many operators does momondo search for flights from Rapid City Airport to Seattle/Tacoma Intl Airport?

  • How old do you have to be to fly from Rapid City Airport to Seattle/Tacoma Intl Airport?

    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 Seattle/Tacoma Intl Airport.

  • What documentation or ID do you need to fly to Seattle/Tacoma Intl Airport?

    The travel and health documents required for your trip to Seattle/Tacoma Intl Airport 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 Seattle/Tacoma Intl Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

  • What is the most popular airline from Rapid City to Seattle?

Best airlines flying from Rapid City to Seattle

Compare and see reviews for airlines that fly from Rapid City to Seattle with momondo
Airline
Rating
Free Cancellation
Price
DeltaPriceFrom $264Free CancellationRating
7.9
8,364 reviews
Search Delta flights
United AirlinesPriceFrom $278Free CancellationRating
7.4
9,525 reviews
Search United Airlines flights

Traveling to a place near Seattle?

Book flights to Seattle if you plan to visit one of these locations
Tacoma
Leavenworth
SeaTac
Ocean Shores
Renton
Olympia
Lynnwood
Kent
Redmond
Marysville
Puyallup
Cle Elum
Lakewood
Tukwila
Federal Way
Centralia
Fife
Westport
Kirkland
Tumwater

Why use momondo?

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

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

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

momondo does allow users to show only those flights to Seattle 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 Seattle?

Once you have performed a search for Rapid City to Seattle 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 Seattle right now. Can momondo alert me if prices change?

If you are not ready to book a flight from Rapid City to Seattle now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Seattle and let you know when they change.

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