Popular airlines from Rapid City Regional Airport (RAP) to Seattle-Tacoma International Airport (SEA)
UnitedUnited
DeltaDelta
American AirlinesAmerican Airlines
Sun Country AirlinesSun Country Airlines
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Cheap Flights from Rapid City to Seattle (RAP-SEA)
Prices were available within the past 7 days and start at $154 for one-way flights and $259 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.
Find the cheapest month to fly from Rapid City (RAP) to Seattle (SEA)
April is typically the cheapest month to fly
Graph displaying average flight prices per month
Alternative airports near Seattle
Prices were available within the past 7 days. Prices and availability are subject to change.
Origin airport | Rapid City Regional |
Destination airport | Seattle - Tacoma Intl. |
Airlines serving | American Airlines, Delta, Sun Country Airlines, United |
Roundtrip price | $258 |
Distance | 954 mi |
Rapid City to Seattle Flights
The cheapest times to fly from Rapid City to Seattle
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 Rapid City to Seattle are during the month of October. You can find some of the cheapest flights from Rapid City to Seattle with Expedia's search tool and vast selection of airlines.
The best time to book a flight from Rapid City to Seattle
Sunday is one of the best days to book for cheap flights from Rapid City to Seattle: 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 Rapid City to Seattle
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 Rapid City to Seattle in 2025. You can also book with separate airlines for your outbound and return journeys, from $154 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 Rapid City to Seattle 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 Rapid City to Seattle 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.
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Top Routes from Rapid City
- Rapid City to Chicago (RAP - ORD)
- Rapid City to Newark Liberty Intl. Airport (RAP - EWR)
- Rapid City to Phoenix (RAP - PHX)
- Rapid City to Los Angeles (RAP - LAX)
- Rapid City to Washington (RAP - DCA)
- Rapid City to Miami (RAP - MIA)
- Rapid City to Boston (RAP - BOS)
- Rapid City to New York (RAP - LGA)
- Rapid City to Charlotte (RAP - CLT)
- Rapid City to Minneapolis (RAP - MSP)
- Rapid City to Denver (RAP - DEN)
- Rapid City to Houston (RAP - IAH)
Top Routes to Seattle
- Chicago to Seattle (ORD - SEA)
- Newark Liberty Intl. Airport to Seattle (EWR - SEA)
- San Diego to Seattle (SAN - SEA)
- Phoenix to Seattle (PHX - SEA)
- Los Angeles to Seattle (LAX - SEA)
- Washington to Seattle (DCA - SEA)
- Boston to Seattle (BOS - SEA)
- New York to Seattle (LGA - SEA)
- Orange County to Seattle (SNA - SEA)
- Denver to Seattle (DEN - SEA)
- Washington to Seattle (IAD - SEA)
- San Jose to Seattle (SJC - SEA)
Top Routes from Rapid City
- United Rapid City to Chicago
- United Rapid City to Phoenix
- United Rapid City to Los Angeles
- American Airlines Rapid City to Miami
- Delta Rapid City to Boston
- Delta Rapid City to New York
- American Airlines Rapid City to Charlotte
- Delta Rapid City to Minneapolis
- United Rapid City to Denver
- American Airlines Rapid City to Dallas
Top Routes to Seattle
- Alaska Airlines Chicago to Seattle
- Alaska Airlines Newark Liberty Intl. Airport to Seattle
- Alaska Airlines San Diego to Seattle
- Alaska Airlines Phoenix to Seattle
- Alaska Airlines Los Angeles to Seattle
- Alaska Airlines Washington to Seattle
- Alaska Airlines Boston to Seattle
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- Alaska Airlines Denver to Seattle
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Seattle Paine Field Intl. Airport
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