$195 Cheap United flights Washington (IAD) to Rapid City (RAP)

View $195 flight on Mon, Sep 22, 2025Opens in a new window

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$195 Cheap United flights Washington (IAD) to Rapid City (RAP)

Prices were available within the past 7 days and start at $195 for one-way flights and $285 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

United
Fri, Sep 5 - Tue, Sep 9
IAD
Washington
RAP
Rapid City
$285 Roundtrip, found 15 hours ago
$285
Roundtrip
found 15 hours ago
Select United flight, departing Fri, Sep 5 from Washington to Rapid City, returning Tue, Sep 9, priced at $285 found 15 hours ago
United
Fri, Aug 22 - Fri, Aug 29
IAD
Washington
RAP
Rapid City
$288 Roundtrip, found 4 days ago
$288
Roundtrip
found 4 days ago
Select United flight, departing Fri, Aug 22 from Washington to Rapid City, returning Fri, Aug 29, priced at $288 found 4 days ago
United
Tue, Sep 9 - Wed, Sep 17
IAD
Washington
RAP
Rapid City
$291 Roundtrip, found 4 days ago
$291
Roundtrip
found 4 days ago
Select United flight, departing Tue, Sep 9 from Washington to Rapid City, returning Wed, Sep 17, priced at $291 found 4 days ago
United
Thu, Aug 21 - Tue, Aug 26
IAD
Washington
RAP
Rapid City
$293 Roundtrip, found 1 day ago
$293
Roundtrip
found 1 day ago
Select United flight, departing Thu, Aug 21 from Washington to Rapid City, returning Tue, Aug 26, priced at $293 found 1 day ago
United
Fri, Nov 21 - Wed, Nov 26
IAD
Washington
RAP
Rapid City
$294 Roundtrip, found 4 days ago
$294
Roundtrip
found 4 days ago
Select United flight, departing Fri, Nov 21 from Washington to Rapid City, returning Wed, Nov 26, priced at $294 found 4 days ago
United
Mon, Sep 22 - Fri, Sep 26
IAD
Washington
RAP
Rapid City
$305 Roundtrip, found 2 days ago
$305
Roundtrip
found 2 days ago
Select United flight, departing Mon, Sep 22 from Washington to Rapid City, returning Fri, Sep 26, priced at $305 found 2 days ago
Flights from Washington (IAD) to Rapid City (RAP)
Origin airport
Washington Dulles Intl.
Destination airport
Rapid City Regional
Airlines serving
American Airlines, Delta, United
Popular airline
United
Distance
1364 mi

Frequently asked questions

How much is a United Airlines flight from Washington Dulles Intl. Airport (IAD) to Rapid City Regional Airport (RAP)?
Scoring cheap one-way United Airlines flights from IAD to RAP from $195 on Expedia is easy — just filter by "Price (lowest to highest)." Or check out our affordable return fares from $285 for your next adventure.**These prices were available on Expedia within the past 7 days, for flights departing within the next year. Prices and availability are subject to change. Additional terms apply.
What is the cheapest month to fly from IAD to RAP with United Airlines?
United Airlines flights to Rapid City tend to be more affordable in the quieter months of January and November. Whether you're in search of a return or one-way ticket, you could score a better deal then.
What is the cheapest time to book flights from Washington Dulles Intl. Airport (IAD) to Rapid City Regional Airport (RAP) with United Airlines?
For cheap United Airlines fares from Washington Dulles Intl. Airport (IAD) to Rapid City Regional Airport (RAP), start searching one to three months before your planned departure. Reserving domestic flights 34 to 86 days in advance could save you 25% compared to booking just 6 to 12 days ahead. The day you book can also influence what you pay. Sunday is generally the most affordable, while Monday is often the most expensive for domestic flights. You can save 6% on average by choosing to book on a Sunday.**Ideal booking window recommendation is based on average round-trip ticket prices for January through November for 2024. Best day of the week to book recommendation is based on average round-trip ticket prices for January through October 2024. All data sourced from ARC's global airline sales database.
Does United Airlines fly nonstop from Washington Dulles Intl. Airport (IAD) to Rapid City Regional Airport (RAP)?
To find out if there's a direct journey from IAD to RAP with United Airlines or another carrier, select the "Nonstop" filter when looking for flights.
What is the earliest United Airlines flight from IAD to RAP?
To find the earliest departure from IAD to RAP with United Airlines, filter your results by "Early Morning" and "Morning." Booking an early flight usually means you'll experience fewer cancellations.**Most reliable time of the day recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
What airports does United Airlines fly into in Rapid City?
Get on a United Airlines flight from Washington Dulles Intl. Airport (IAD) to Rapid City, and you'll likely come in to Rapid City Regional Airport (RAP). This is the airline's primary hub in this city.
Why fly with United Airlines from IAD to RAP?
A rewarding loyalty program and the chance to rack up points through United Mileage Plus are the start of the reasons to leave from IAD to RAP with United Airlines. Plus, when you join our One Key™ program, you can receive OneKeyCash™* in addition to any airline loyalty program earnings. It's yours to spend on your next adventure.*OneKeyCash™ disclaimer - OneKeyCash™ is not redeemable for cash and can only be used on Expedia, Hotels.com and Vrbo.
Can I change or cancel my United Airlines flight from Washington Dulles Intl. Airport (IAD) to Rapid City Regional Airport (RAP)?
Changes are often free within 24 hours of making a booking, but your airline may charge you after that. For further details about altering your flights, check out your "Trips," select your flight and click on "Manage Booking." If you want the freedom to change your plans without additional charges, check the "Changes included" or "No cancel fee" filter when planning your next getaway.

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