$182 Cheap Flights from Seattle (SEA) to Rapid City (RAP)

View $182 flight on Mon, Aug 31, 2026Opens in a new window

Popular airlines from Seattle-Tacoma International Airport (SEA) to Rapid City Regional Airport (RAP)

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Cheap Flights from Seattle to Rapid City (SEA-RAP)

Prices were available within the past 7 days and start at $182 for one-way flights and $259 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

American Airlines
Wed, Jan 21 - Mon, Jan 26
SEA
Seattle
RAP
Rapid City
$259 Roundtrip, found 11 hours ago
$259
Roundtrip
found 11 hours ago
Select American Airlines flight, departing Wed, Jan 21 from Seattle to Rapid City, returning Mon, Jan 26, priced at $259 found 11 hours ago
Delta
Fri, Dec 12 - Sun, Dec 14
SEA
Seattle
RAP
Rapid City
$259 Roundtrip, found 1 hour ago
$259
Roundtrip
found 1 hour ago
Select Delta flight, departing Fri, Dec 12 from Seattle to Rapid City, returning Sun, Dec 14, priced at $259 found 1 hour ago
United
Fri, Dec 12 - Sun, Dec 14
SEA
Seattle
RAP
Rapid City
$259 Roundtrip, found 1 hour ago
$259
Roundtrip
found 1 hour ago
Select United flight, departing Fri, Dec 12 from Seattle to Rapid City, returning Sun, Dec 14, priced at $259 found 1 hour ago
United
Wed, Dec 31 - Tue, Jan 6
SEA
Seattle
RAP
Rapid City
$264 Roundtrip, found 2 hours ago
$264
Roundtrip
found 2 hours ago
Select United flight, departing Wed, Dec 31 from Seattle to Rapid City, returning Tue, Jan 6, priced at $264 found 2 hours ago
Delta
Tue, Jan 13 - Tue, Jan 20
SEA
Seattle
RAP
Rapid City
$269 Roundtrip, found 1 day ago
$269
Roundtrip
found 1 day ago
Select Delta flight, departing Tue, Jan 13 from Seattle to Rapid City, returning Tue, Jan 20, priced at $269 found 1 day ago
United
Thu, Jan 15 - Tue, Jan 20
SEA
Seattle
RAP
Rapid City
$277 Roundtrip, found 1 day ago
$277
Roundtrip
found 1 day ago
Select United flight, departing Thu, Jan 15 from Seattle to Rapid City, returning Tue, Jan 20, priced at $277 found 1 day ago
United
Wed, Dec 10 - Wed, Dec 17
SEA
Seattle
RAP
Rapid City
$278 Roundtrip, found 3 days ago
$278
Roundtrip
found 3 days ago
Select United flight, departing Wed, Dec 10 from Seattle to Rapid City, returning Wed, Dec 17, priced at $278 found 3 days ago
United
Thu, Jan 15 - Tue, Jan 20
SEA
Seattle
RAP
Rapid City
$282 Roundtrip, found 1 day ago
$282
Roundtrip
found 1 day ago
Select United flight, departing Thu, Jan 15 from Seattle to Rapid City, returning Tue, Jan 20, priced at $282 found 1 day ago
Delta
Mon, Nov 24 - Fri, Dec 5
SEA
Seattle
RAP
Rapid City
$284 Roundtrip, found 11 hours ago
$284
Roundtrip
found 11 hours ago
Select Delta flight, departing Mon, Nov 24 from Seattle to Rapid City, returning Fri, Dec 5, priced at $284 found 11 hours ago
United
Thu, Jan 15 - Tue, Jan 20
SEA
Seattle
RAP
Rapid City
$285 Roundtrip, found 1 day ago
$285
Roundtrip
found 1 day ago
Select United flight, departing Thu, Jan 15 from Seattle to Rapid City, returning Tue, Jan 20, priced at $285 found 1 day ago

Find the cheapest month to fly from Seattle (SEA) to Rapid City (RAP)

September is typically the cheapest month to fly

From $258 - $480 per traveler.

Alternative airports near Rapid City

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Rapid City Regional RAP. Cheapest and Closest option available. Average driving time to city center is 16 minutes. Flights from $591
RAP
Rapid City Regional
CheapestClosest
Average driving time to city center16 min
Flights from $591

Frequently asked questions

How much does a flight from Seattle - Tacoma Intl. Airport (SEA) to Rapid City Regional Airport (RAP) cost?
Secure a cheap one-way flight from $182 or cheap return flight from $259 from Seattle - Tacoma Intl. Airport (SEA) to Rapid City Regional Airport (RAP) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to find our cheapest flight deals on this route.
What is the cheapest month to fly from Seattle - Tacoma Intl. Airport (SEA) to Rapid City Regional Airport (RAP)?
The cheapest month to fly from SEA to RAP is January, when demand is low. Off-peak months are usually when better flight deals are available between these airports.
What is the cheapest airline that flies from Seattle - Tacoma Intl. Airport (SEA) to Rapid City Regional Airport (RAP)?
Expedia's filter tool lets you easily compare different airlines, travel time and fares all in one place. Select your preferences, then sort by "Price (lowest to highest)" to find out which carrier offers the cheapest SEA to RAP flight.
How many flights per day from Seattle - Tacoma Intl. Airport (SEA) to Rapid City Regional Airport (RAP)?
You'll need to take a flight with a layover when traveling from Seattle - Tacoma Intl. Airport (SEA) to Rapid City Regional Airport (RAP). There are no daily direct flights on this route. However, just filter your search to include one or two stops to discover the best option for your trip.
What day of the week has the most flights from SEA to RAP?
Usually you'll find the largest variety of flight choices on a Friday. Tuesdays are often the quietest.* However, this can change based on the airline, time of year and other factors.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Seattle - Tacoma Intl. Airport (SEA) to Rapid City Regional Airport (RAP)?
Choose a flight from Seattle - Tacoma Intl. Airport (SEA) to Rapid City Regional Airport (RAP) that takes off before 3 PM to reduce the risk of cancellations. Departures after this hour have a 22% higher chance of being canceled, on average.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
Is it cheaper to buy a plane ticket from Seattle - Tacoma Intl. Airport (SEA) to Rapid City Regional Airport (RAP) last-minute?
Last-minute bookings from SEA to RAP are generally more expensive. For the best rates, start looking for flights as soon as possible. That being said, if you're flexible with your travel dates, you may score a cheap ticket just before your departure.
Is it cheaper to book a SEA to RAP flight and hotel package?
Securing a SEA to RAP flight and hotel package is usually cheaper than booking separately. With Expedia, you can enjoy the convenience of organizing your trip all in one place. Pick from our wide range of accommodations and then add flights, activities and car rentals to your booking. Bundle it all together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Seattle - Tacoma Intl. Airport (SEA) to Rapid City Regional Airport (RAP)?
If you booked your SEA to RAP flight within the last 24 hours, you may be able to modify or cancel it without fees. Depending on the airline and the ticket type you purchased, additional charges may apply for changes beyond this timeframe. Airline policies and contact information can be found in your itinerary or confirmation email. Or, go to our Customer Service portal for more details.

Travel information

Origin airport
Seattle - Tacoma Intl.
Destination airport
Rapid City Regional
Airlines serving
American Airlines, Delta, United
Roundtrip price
$258
Distance
954 mi

Book with confidence

Seattle to Rapid City Flights

The cheapest times to fly from Seattle to Rapid City

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Seattle to Rapid City are during the month of January. You can find some of the cheapest flights from Seattle to Rapid City with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Seattle to Rapid City

Sunday is one of the best days to book for cheap flights from Seattle to Rapid City: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Seattle to Rapid City

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Seattle to Rapid City in 2025. You can also book with separate airlines for your outbound and return journeys, from $182 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Seattle to Rapid City flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Seattle to Rapid City airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Seattle to Rapid City Flights

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*Available to One Key members.