What is the cheapest airline that flies from Rapid City to Seattle/Tacoma Intl?

United Airlines is the most popular carrier operating from Rapid City to Seattle/Tacoma Intl

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?

The number of operators available for flights from Rapid City Airport to Seattle/Tacoma Intl Airport is 2 as of October 2025.

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.

$259 Cheap Flights from Rapid City to Seattle in 2025/26

Q: What is the typical price of a round-trip flight between Rapid City and Seattle?

Prices are currently low for flights on this route. Typical prices usually range from $299 to $563. The lowest price recently found on this route was $259.

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Find the cheapest flights from Rapid City to Seattle

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One-way

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Cheap round-trip flights

Enter your travel dates to find the best prices.

4:34 pm - 11:57 pmRAP-SEA

8h 23m1 stop

6:00 am - 3:45 pmSEA-RAP

8h 45m1 stop

$259Delta

Find Deal

Tue, Nov 4 - Tue, Nov 11

12:27 pm - 11:44 pmRAP-SEA

12h 17m2 stops

3:48 pm - 9:59 pmSEA-RAP

5h 11m1 stop

$264United Airlines

Find Deal

Tue, Nov 4 - Tue, Nov 11

4:34 pm - 11:57 pmRAP-SEA

8h 23m1 stop

6:00 am - 1:45 pmSEA-RAP

6h 45m1 stop

$274Delta

Find Deal

Tue, Oct 21 - Sat, Nov 8

12:27 pm - 6:00 pmRAP-SEA

6h 33m1 stop

3:48 pm - 9:59 pmSEA-RAP

5h 11m1 stop

$276United Airlines

Find Deal

Tue, Nov 4 - Tue, Nov 11

8:45 am - 2:39 pmRAP-SEA

6h 54m1 stop

5:00 am - 11:05 amSEA-RAP

5h 05m1 stop

$283United Airlines

Find Deal

Fri, Oct 31 - Wed, Nov 5

6:05 am - 4:32 pmRAP-SEA

11h 27m2 stops

1:44 pm - 10:39 pmSEA-RAP

7h 55m2 stops

$284Delta

Find Deal

Tue, Nov 4 - Tue, Nov 11

4:34 pm - 11:57 pmRAP-SEA

8h 23m1 stop

11:15 am - 10:36 pmSEA-RAP

10h 21m2 stops

$294Delta

Find Deal

Tue, Oct 21 - Sat, Nov 8

9:56 am - 3:32 pmRAP-SEA

6h 36m1 stop

5:00 am - 11:05 amSEA-RAP

5h 05m1 stop

$300United Airlines

Find Deal

Wed, Oct 22 - Wed, Nov 5

1:42 pm - 11:42 pmRAP-SEA

11h 00m1 stop

12:41 am - 1:12 pmSEA-RAP

11h 31m1 stop

$468American Airlines

Find Deal

Tue, Nov 4 - Mon, Nov 10

1:42 pm - 11:42 pmRAP-SEA

11h 00m1 stop

12:41 am - 1:12 pmSEA-RAP

11h 31m1 stop

$495American Airlines

Find Deal

Tue, Nov 4 - Mon, Nov 10

United Airlines flights from Rapid City to Seattle

Our best United Airlines deals on Rapid City to Seattle flight tickets

United Airlines

Nov 4

RAP12:27 pmRapid City

12h 17m

2 stops

SEA11:44 pmSeattle/Tacoma Intl

Nov 11

SEA3:48 pmSeattle/Tacoma Intl

5h 11m

1 stop

RAP9:59 pmRapid City

$264

Find similar

United Airlines

Nov 4

RAP12:27 pmRapid City

6h 33m

1 stop

SEA6:00 pmSeattle/Tacoma Intl

Nov 11

SEA3:48 pmSeattle/Tacoma Intl

5h 11m

1 stop

RAP9:59 pmRapid City

$276

Find similar

United Airlines

Oct 31

RAP8:45 amRapid City

6h 54m

1 stop

SEA2:39 pmSeattle/Tacoma Intl

Nov 5

SEA5:00 amSeattle/Tacoma Intl

5h 05m

1 stop

RAP11:05 amRapid City

$283

Find similar

American Airlines flights from Rapid City to Seattle

Our best American Airlines deals on Rapid City to Seattle flight tickets

American Airlines

Nov 4

RAP1:42 pmRapid City

11h 00m

1 stop

SEA11:42 pmSeattle/Tacoma Intl

Nov 10

SEA12:41 amSeattle/Tacoma Intl

11h 31m

1 stop

RAP1:12 pmRapid City

$468

Find similar

American Airlines

Nov 4

RAP1:42 pmRapid City

11h 00m

1 stop

SEA11:42 pmSeattle/Tacoma Intl

Nov 10

SEA12:41 amSeattle/Tacoma Intl

11h 31m

1 stop

RAP1:12 pmRapid City

$495

Find similar

American Airlines

Feb 28

RAP12:30 pmRapid City

7h 33m

1 stop

SEA7:03 pmSeattle/Tacoma Intl

Mar 2

SEA1:35 amSeattle/Tacoma Intl

8h 56m

1 stop

RAP11:31 amRapid City

$528

Find similar

Fly from

Fly to

Route

Depart

Return

Price

Rapid CitySeattle

RAP - SEA

RAPSEA

Rapid City

Tue 11/4

4:34 pm-11:57 pm

1 stop8h 23m

Seattle/Tacoma Intl

Tue 11/11

6:00 am-3:45 pm

1 stop8h 45m

$259

Rapid CitySeattle

RAP - SEA

RAPSEA

Rapid City

Tue 11/4

12:27 pm-11:44 pm

2 stops12h 17m

Seattle/Tacoma Intl

Tue 11/11

3:48 pm-9:59 pm

1 stop5h 11m

$264

Rapid CitySeattle

RAP - SEA

RAPSEA

Rapid City

Tue 10/21

4:34 pm-11:57 pm

1 stop8h 23m

Seattle/Tacoma Intl

Sat 11/8

6:00 am-1:45 pm

1 stop6h 45m

$274

Rapid CitySeattle

RAP - SEA

RAPSEA

Rapid City

Tue 11/4

12:27 pm-6:00 pm

1 stop6h 33m

Seattle/Tacoma Intl

Tue 11/11

3:48 pm-9:59 pm

1 stop5h 11m

$276

Rapid CitySeattle

RAP - SEA

RAPSEA

Rapid City

Fri 10/31

8:45 am-2:39 pm

1 stop6h 54m

Seattle/Tacoma Intl

Wed 11/5

5:00 am-11:05 am

1 stop5h 05m

$283

Rapid CitySeattle

RAP - SEA

RAPSEA

Rapid City

Tue 11/4

6:05 am-4:32 pm

2 stops11h 27m

Seattle/Tacoma Intl

Tue 11/11

1:44 pm-10:39 pm

2 stops7h 55m

$284

Rapid CitySeattle

RAP - SEA

RAPSEA

Rapid City

Tue 10/21

4:34 pm-11:57 pm

1 stop8h 23m

Seattle/Tacoma Intl

Sat 11/8

11:15 am-10:36 pm

2 stops10h 21m

$294

Rapid CitySeattle

RAP - SEA

RAPSEA

Rapid City

Wed 10/22

9:56 am-3:32 pm

1 stop6h 36m

Seattle/Tacoma Intl

Wed 11/5

5:00 am-11:05 am

1 stop5h 05m

$300

Rapid CitySeattle

RAP - SEA

RAPSEA

Rapid City

Tue 11/4

1:42 pm-11:42 pm

1 stop11h 00m

Seattle/Tacoma Intl

Mon 11/10

12:41 am-1:12 pm

1 stop11h 31m

$468

Rapid CitySeattle

RAP - SEA

RAPSEA

Rapid City

Tue 11/4

1:42 pm-11:42 pm

1 stop11h 00m

Seattle/Tacoma Intl

Mon 11/10

12:41 am-1:12 pm

1 stop11h 31m

$495

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 13 resultsSorted by cheapest first

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

Prices

Airlines

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, March 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 $325. If you don’t want to visit Seattle in March, then you should wait until February to fly from Rapid City, when ticket prices are also cheap, with an average price of $328.

What is the cheapest day to depart on your flight to Seattle?

On average, the least expensive day to fly to Seattle from Rapid City is on a Tuesday. momondo users have found tickets for Tuesday departures for as low as $589. However, this price may fluctuate depending on the airline, the season, and holidays. On the other hand, Sunday is the most expensive day to depart from Rapid City because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $700.

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

Flying to Seattle from Rapid City at noon is the least expensive time of day to depart. momondo users have found prices as low as $582 when looking at flights departing at noon. Flights to Seattle are more costly in the morning, with an average ticket price of $632. Departure times in the morning fall within the peak daily travel times, which is why tickets can be more expensive.

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

Direct flights	None

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 40m.
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?
The number of operators available for flights from Rapid City Airport to Seattle/Tacoma Intl Airport is 2 as of October 2025.
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?
momondo data reveals that the most frequently booked airline on the route from Rapid City to Seattle is United Airlines, representing 83% of all bookings. The subsequent popular airline is Delta at 17%.

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
United Airlines	PriceFrom $258	Free Cancellation	Rating 7.4 8,933 reviews		Search United Airlines flights
Delta	PriceFrom $258	Free Cancellation	Rating 7.9 7,962 reviews		Search Delta flights

Tacoma

Leavenworth

SeaTac

Ocean Shores

Renton

Olympia

Lynnwood

Kent

Puyallup

Marysville

Federal Way

Tukwila

Kirkland

Fife

Centralia

Shoreline

Lakewood

Cle Elum

Redmond

Westport

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.