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Cheap flights from Rapid City to Seattle from $158

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 7/3. 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 Seattle

Cheap round-trip flights

Enter your travel dates to find the best prices.
United Airlines Logo
4:15 pm - 10:56 pm
RAP
-
SEA
7h 41m
1 stop
United Airlines Logo
5:00 am - 1:08 pm
SEA
-
RAP
7h 08m
1 stop
$279United Airlines
Fri, Apr 24 - Mon, Apr 27
Delta Logo
4:01 pm - 12:01 am
RAP
-
SEA
9h 00m
2 stops
Delta Logo
6:00 am - 3:18 pm
SEA
-
RAP
8h 18m
1 stop
$284Delta
Tue, Mar 10 - Tue, Mar 17
United Airlines Logo
12:00 pm - 6:04 pm
RAP
-
SEA
7h 04m
1 stop
United Airlines Logo
5:00 am - 1:13 pm
SEA
-
RAP
7h 13m
1 stop
$293United Airlines
Tue, Mar 10 - Tue, Mar 17
United Airlines Logo
8:30 am - 6:26 pm
RAP
-
SEA
10h 56m
2 stops
United Airlines Logo
5:00 am - 11:12 am
SEA
-
RAP
5h 12m
1 stop
$314United Airlines
Tue, Feb 24 - Sat, Feb 28
Delta Logo
4:01 pm - 11:40 pm
RAP
-
SEA
8h 39m
1 stop
Delta Logo
6:00 am - 3:18 pm
SEA
-
RAP
8h 18m
1 stop
$329Delta
Thu, Apr 2 - Sat, Apr 11
United Airlines Logo
5:00 am - 9:49 am
RAP
-
SEA
5h 49m
1 stop
United Airlines Logo
5:00 am - 11:05 am
SEA
-
RAP
5h 05m
1 stop
$333United Airlines
Tue, Mar 10 - Tue, Mar 17
United Airlines Logo
5:00 am - 9:49 am
RAP
-
SEA
5h 49m
1 stop
United Airlines Logo
5:00 am - 11:05 am
SEA
-
RAP
5h 05m
1 stop
$334United Airlines
Tue, Mar 10 - Tue, Mar 17
Delta Logo
4:01 pm - 12:01 am
RAP
-
SEA
9h 00m
2 stops
Delta Logo
1:32 pm - 10:25 pm
SEA
-
RAP
7h 53m
2 stops
$340Delta
Tue, Mar 10 - Tue, Mar 17
United Airlines Logo
12:25 pm - 6:03 pm
RAP
-
SEA
6h 38m
1 stop
United Airlines Logo
5:00 am - 1:13 pm
SEA
-
RAP
7h 13m
1 stop
$349United Airlines
Sat, Feb 28 - Fri, Mar 6
United Airlines Logo
10:55 am - 11:30 pm
RAP
-
SEA
13h 35m
2 stops
United Airlines Logo
5:00 am - 1:13 pm
SEA
-
RAP
7h 13m
1 stop
$354United Airlines
Sat, Feb 28 - Fri, Mar 6

United Airlines flights from Rapid City to Seattle

Our best United Airlines deals on Rapid City to Seattle flight tickets
United Airlines
Apr 24
RAP4:15 pmRapid City
7h 41m
1 stop
SEA10:56 pmSeattle/Tacoma Intl
Apr 27
SEA5:00 amSeattle/Tacoma Intl
7h 08m
1 stop
RAP1:08 pmRapid City
$279
United Airlines
Mar 10
RAP12:00 pmRapid City
7h 04m
1 stop
SEA6:04 pmSeattle/Tacoma Intl
Mar 17
SEA5:00 amSeattle/Tacoma Intl
7h 13m
1 stop
RAP1:13 pmRapid City
$293
United Airlines
Feb 24
RAP8:30 amRapid City
10h 56m
2 stops
SEA6:26 pmSeattle/Tacoma Intl
Feb 28
SEA5:00 amSeattle/Tacoma Intl
5h 12m
1 stop
RAP11:12 amRapid City
$314

Delta flights from Rapid City to Seattle

Our best Delta deals on Rapid City to Seattle flight tickets
Delta
Mar 10
RAP4:01 pmRapid City
9h 00m
2 stops
SEA12:01 amSeattle/Tacoma Intl
Mar 17
SEA6:00 amSeattle/Tacoma Intl
8h 18m
1 stop
RAP3:18 pmRapid City
$284
Delta
Apr 2
RAP4:01 pmRapid City
8h 39m
1 stop
SEA11:40 pmSeattle/Tacoma Intl
Apr 11
SEA6:00 amSeattle/Tacoma Intl
8h 18m
1 stop
RAP3:18 pmRapid City
$329
Delta
Mar 10
RAP4:01 pmRapid City
9h 00m
2 stops
SEA12:01 amSeattle/Tacoma Intl
Mar 17
SEA1:32 pmSeattle/Tacoma Intl
7h 53m
2 stops
RAP10:25 pmRapid City
$340

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 February 9, 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

Rapid CitySeattle

RAP - SEA

RAPSEA

Rapid City

Fri 4/24

4:15 pm-10:56 pm

1 stop7h 41m

Seattle/Tacoma Intl

Mon 4/27

5:00 am-1:08 pm

1 stop7h 08m

$279

Rapid CitySeattle

RAP - SEA

RAPSEA

Rapid City

Tue 3/10

4:01 pm-12:01 am

2 stops9h 00m

Seattle/Tacoma Intl

Tue 3/17

6:00 am-3:18 pm

1 stop8h 18m

$284

Rapid CitySeattle

RAP - SEA

RAPSEA

Rapid City

Tue 3/10

12:00 pm-6:04 pm

1 stop7h 04m

Seattle/Tacoma Intl

Tue 3/17

5:00 am-1:13 pm

1 stop7h 13m

$293

Rapid CitySeattle

RAP - SEA

RAPSEA

Rapid City

Tue 2/24

8:30 am-6:26 pm

2 stops10h 56m

Seattle/Tacoma Intl

Sat 2/28

5:00 am-11:12 am

1 stop5h 12m

$314

Rapid CitySeattle

RAP - SEA

RAPSEA

Rapid City

Thu 4/2

4:01 pm-11:40 pm

1 stop8h 39m

Seattle/Tacoma Intl

Sat 4/11

6:00 am-3:18 pm

1 stop8h 18m

$329

Rapid CitySeattle

RAP - SEA

RAPSEA

Rapid City

Tue 3/10

5:00 am-9:49 am

1 stop5h 49m

Seattle/Tacoma Intl

Tue 3/17

5:00 am-11:05 am

1 stop5h 05m

$333

Rapid CitySeattle

RAP - SEA

RAPSEA

Rapid City

Tue 3/10

5:00 am-9:49 am

1 stop5h 49m

Seattle/Tacoma Intl

Tue 3/17

5:00 am-11:05 am

1 stop5h 05m

$334

Rapid CitySeattle

RAP - SEA

RAPSEA

Rapid City

Tue 3/10

4:01 pm-12:01 am

2 stops9h 00m

Seattle/Tacoma Intl

Tue 3/17

1:32 pm-10:25 pm

2 stops7h 53m

$340

Rapid CitySeattle

RAP - SEA

RAPSEA

Rapid City

Sat 2/28

12:25 pm-6:03 pm

1 stop6h 38m

Seattle/Tacoma Intl

Fri 3/6

5:00 am-1:13 pm

1 stop7h 13m

$349

Rapid CitySeattle

RAP - SEA

RAPSEA

Rapid City

Sat 2/28

10:55 am-11:30 pm

2 stops13h 35m

Seattle/Tacoma Intl

Fri 3/6

5:00 am-1:13 pm

1 stop7h 13m

$354

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.

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 29m

Direct flights

None
The fastest flight from Rapid City to Seattle takes 5h 29m
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 29m.

  • 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 $258Free CancellationRating
7.9
8,178 reviews
Search Delta flights
United AirlinesPriceFrom $278Free CancellationRating
7.4
9,267 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
Marysville
Redmond
Puyallup
Cle Elum
Lakewood
Tukwila
Federal Way
Kirkland
Westport
Centralia
Fife
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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