$231 Cheap Flights from Santa Rosa (STS) to Rapid City (RAP)

Popular airlines from Santa Rosa, CA (STS-Sonoma County) to Rapid City Regional Airport (RAP)

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Find available prices by choosing your travel dates.

Cheap Flights from Santa Rosa to Rapid City (STS-RAP)

Prices were available within the past 7 days and start at $231 for one-way flights and $401 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

American Airlines
American Airlines
American Airlines
American Airlines
American Airlines
American Airlines
American Airlines
American Airlines
American Airlines
Alaska Airlines
Flights from Santa Rosa (STS) to Rapid City (RAP)
Origin airport
Sonoma County
Destination airport
Rapid City Regional
Airlines serving
American Airlines
Roundtrip price
$400
Distance
1091 mi

Santa Rosa to Rapid City Flights

The cheapest times to fly from Santa Rosa 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 Santa Rosa to Rapid City are during the month of August. You can find some of the cheapest flights from Santa Rosa to Rapid City with Expedia's search tool and vast selection of airlines.

The best time to book a flight from Santa Rosa to Rapid City

Sunday is one of the best days to book for cheap flights from Santa Rosa 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 Santa Rosa 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 Santa Rosa to Rapid City in 2025. You can also book with separate airlines for your outbound and return journeys, from $231 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 Santa Rosa 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 Santa Rosa 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.

Frequently asked questions

How much does a flight from Sonoma County Airport (STS) to Rapid City Regional Airport (RAP) cost?
Discover the latest flight deals from STS to RAP by entering your preferred travel dates and searching on Expedia. Easily compare prices by departure date if you have flexibility with your schedule and use handy filters to explore prices for your preferred journey. As a member of One Key™, our free loyalty program, you can use Price Tracking to watch fares and receive notifications if prices go up or down.
What is the cheapest month to fly from STS to RAP?
The cheapest flights from STS to RAP are usually during off-peak season, when demand is lower. To save money, avoid flying during public holidays, school breaks and major local events.
What is the cheapest airline that flies from STS to RAP?
Use the filter tool on Expedia to compare airlines and find the cheapest carrier that’ll take you from STS to RAP. Sort your results by “Price (lowest to highest)” to snap up a great deal.
How many flights per day from Sonoma County Airport (STS) to Rapid City Regional Airport (RAP)?
You’ll have to catch a flight with a layover when traveling from Sonoma County Airport (STS) 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 find an option that works for you.
What day of the week has the most flights from STS to RAP?
Typically you’ll find the widest variety of flight choices on a Friday. Tuesdays are often the quietest.* But this can vary depending on the season, carrier 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 Sonoma County Airport (STS) to Rapid City Regional Airport (RAP)?
To arrive at Rapid City Regional Airport (RAP) on time, select a flight that takes off from Sonoma County Airport (STS) before 3 PM. The chance of cancellations is 22% higher, on average, for departures after this time.**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 Sonoma County Airport (STS) to Rapid City Regional Airport (RAP) last-minute?
Last-minute bookings from STS to RAP are typically more expensive. To secure the lowest prices, start searching for flights early. That being said, if you’re flexible with your travel plans, it’s possible to find a cheap fare right before your journey.
Is it cheaper to book a STS to RAP flight and hotel package?
You’ll generally save money by securing a STS to RAP flight and hotel package compared to booking separately. In fact, you could save hundreds of dollars by bundling with Expedia. And it’s simple to manage everything in one convenient place. After choosing your preferred flights and accommodations, you can add extras like car rentals, tours and activities.
Can I cancel or change the date of my flight from Sonoma County Airport (STS) to Rapid City Regional Airport (RAP)?
In most instances, you can reschedule or cancel your STS to RAP flight. However, there may be additional fees, especially if you booked over 24 hours ago. Check your itinerary for the airline’s fees and rules on flight changes, or if you’d like more details, head to our Customer Service portal.

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*Available to One Key members.