Search Cheap Flights to
Keystone

Search 400 airlines and 321,000 hotels worldwide.

Stop Planning & Start Exploring

FREE 24 hour cancellation on most flights

Keystone Flights as Low as $249

Prices found within past 7 days. Prices and availability subject to change. Additional terms may apply.

United
Mon, Aug 24 - Thu, Sep 10
DEN
Denver Intl.
RAP
Rapid City Regional
$249 Roundtrip, found 12 hours ago
$249
Roundtrip
found 12 hours ago
Select United flight, departing Mon, Aug 24 from Denver Intl. to Rapid City Regional, returning Thu, Sep 10, priced at $249 found 12 hours ago
Delta
Sat, Aug 29 - Wed, Sep 9
DCA
Ronald Reagan Washington National
RAP
Rapid City Regional
$271 Roundtrip, found 13 hours ago
$271
Roundtrip
found 13 hours ago
Select Delta flight, departing Sat, Aug 29 from Ronald Reagan Washington National to Rapid City Regional, returning Wed, Sep 9, priced at $271 found 13 hours ago
Delta
Tue, Sep 1 - Wed, Sep 9
DCA
Ronald Reagan Washington National
RAP
Rapid City Regional
$276 Roundtrip, found 13 hours ago
$276
Roundtrip
found 13 hours ago
Select Delta flight, departing Tue, Sep 1 from Ronald Reagan Washington National to Rapid City Regional, returning Wed, Sep 9, priced at $276 found 13 hours ago
United
Fri, Aug 28 - Fri, Sep 4
DEN
Denver Intl.
RAP
Rapid City Regional
$282 Roundtrip, found 18 hours ago
$282
Roundtrip
found 18 hours ago
Select United flight, departing Fri, Aug 28 from Denver Intl. to Rapid City Regional, returning Fri, Sep 4, priced at $282 found 18 hours ago
Delta
Sun, Aug 23 - Mon, Aug 31
MCI
Kansas City Intl.
RAP
Rapid City Regional
$309 Roundtrip, found 1 day ago
$309
Roundtrip
found 1 day ago
Select Delta flight, departing Sun, Aug 23 from Kansas City Intl. to Rapid City Regional, returning Mon, Aug 31, priced at $309 found 1 day ago
American Airlines
Sat, Aug 22 - Fri, Aug 28
MCI
Kansas City Intl.
RAP
Rapid City Regional
$309 Roundtrip, found 1 day ago
$309
Roundtrip
found 1 day ago
Select American Airlines flight, departing Sat, Aug 22 from Kansas City Intl. to Rapid City Regional, returning Fri, Aug 28, priced at $309 found 1 day ago
Delta
Sat, Jul 11 - Wed, Jul 29
LAX
Los Angeles Intl.
RAP
Rapid City Regional
$319 Roundtrip, found 1 day ago
$319
Roundtrip
found 1 day ago
Select Delta flight, departing Sat, Jul 11 from Los Angeles Intl. to Rapid City Regional, returning Wed, Jul 29, priced at $319 found 1 day ago
United
Wed, Aug 19 - Wed, Aug 26
SBA
Santa Barbara Municipal
RAP
Rapid City Regional
$326 Roundtrip, found 1 day ago
$326
Roundtrip
found 1 day ago
Select United flight, departing Wed, Aug 19 from Santa Barbara Municipal to Rapid City Regional, returning Wed, Aug 26, priced at $326 found 1 day ago
Delta
Wed, Aug 5 - Tue, Aug 25
SAN
San Diego Intl.
RAP
Rapid City Regional
$326 Roundtrip, found 1 day ago
$326
Roundtrip
found 1 day ago
Select Delta flight, departing Wed, Aug 5 from San Diego Intl. to Rapid City Regional, returning Tue, Aug 25, priced at $326 found 1 day ago
Delta
Tue, Aug 25 - Sun, Sep 6
SNA
John Wayne
RAP
Rapid City Regional
$329 Roundtrip, found 2 days ago
$329
Roundtrip
found 2 days ago
Select Delta flight, departing Tue, Aug 25 from John Wayne to Rapid City Regional, returning Sun, Sep 6, priced at $329 found 2 days ago
Delta
Sun, Nov 22 - Fri, Dec 4
PVD
T.F. Green
RAP
Rapid City Regional
$384 Roundtrip, found 4 days ago
$384
Roundtrip
found 4 days ago
Select Delta flight, departing Sun, Nov 22 from T.F. Green to Rapid City Regional, returning Fri, Dec 4, priced at $384 found 4 days ago
American Airlines
Thu, Aug 6 - Sat, Aug 22
CLD
McClellan-Palomar
RAP
Rapid City Regional
$388 Roundtrip, found 1 day ago
$388
Roundtrip
found 1 day ago
Select American Airlines flight, departing Thu, Aug 6 from McClellan-Palomar to Rapid City Regional, returning Sat, Aug 22, priced at $388 found 1 day ago
United
Mon, Jul 27 - Wed, Aug 5
LBB
Preston Smith Intl.
RAP
Rapid City Regional
$389 Roundtrip, found 21 hours ago
$389
Roundtrip
found 21 hours ago
Select United flight, departing Mon, Jul 27 from Preston Smith Intl. to Rapid City Regional, returning Wed, Aug 5, priced at $389 found 21 hours ago
United
Sat, Jul 11 - Wed, Jul 29
ONT
Ontario Intl. Airport
RAP
Rapid City Regional
$409 Roundtrip, found 1 day ago
$409
Roundtrip
found 1 day ago
Select United flight, departing Sat, Jul 11 from Ontario Intl. Airport to Rapid City Regional, returning Wed, Jul 29, priced at $409 found 1 day ago
Delta
Sun, Jul 5 - Tue, Jul 14
IAD
Washington Dulles Intl.
RAP
Rapid City Regional
$450 Roundtrip, found 1 day ago
$450
Roundtrip
found 1 day ago
Select Delta flight, departing Sun, Jul 5 from Washington Dulles Intl. to Rapid City Regional, returning Tue, Jul 14, priced at $450 found 1 day ago
Delta
Sat, Jul 4 - Thu, Jul 9
EWR
Newark Liberty Intl. Airport
RAP
Rapid City Regional
$486 Roundtrip, found 20 hours ago
$486
Roundtrip
found 20 hours ago
Select Delta flight, departing Sat, Jul 4 from Newark Liberty Intl. Airport to Rapid City Regional, returning Thu, Jul 9, priced at $486 found 20 hours ago

Cheap Flights to Keystone

Fall in love at first flight with your vacation to Keystone by saving a ton of cash on your last-minute cheap flight. There’s no more scouring the internet for a good deal—book your flight to Keystone on Hotwire, and you’ll be up, up, and on a getaway in no time.

Because once the wheels are down in Keystone, the good times start rolling. So buckle up, you’re in for a fun ride.

Frequently Asked Questions About flights to Keystone

Don’t waste your time on endless searches for cheap airline tickets oneway or roundtrip. We’ll have you on your way to Keystone with a tiny bag of pretzels in your hand before you can say “tray tables in the upright position”—and for a ticket price that works for your vacay budget.

So all you have to worry about is where you’re headed after the RAP airport.

What is the cheapest month to fly to Keystone?

Airline ticket prices fluctuate all the time, depending on the day of the week or the month of the year. The cheapest round trip flights to Keystone are in August, but when you book your flight on Hotwire, savings are always in season.

How many airlines fly to Keystone?

Variety is the spice of life, even when it comes to booking your next trip. Want options for airlines? You’ll find 16 to choose from for your flight to Keystone.

What airport is best to fly into Keystone?

When you’re planning your trip to Keystone, convenience is the name of the game. Luckily, Keystone Rapid City Regional Airport is nearby so you can deplane and get going on checking off everything on your Keystone must-do list.

How much are flights to Keystone?

Got very cheap flights on your vacation itinerary? When you book your airline tickets to Keystone on Hotwire, you may just get what’s on your getaway wish list. With tickets as low as $249, you’ll have leftover cash for at least a magazine and a bottle of water at the airport book store.

How to get cheap flights to Keystone?

The trick to saving a stack of cash on your flight to Keystone? Snatch up that Hotwire flight deal when you see a killer rate because it could be gone in a flash. And with flights as low as $249 right now, why wait?

Keystone Flight Information
Destination airport
Rapid City Regional
Destination airport IATA code
RAP
Roundtrip price
$249

Last Minute Hotel Deals in Keystone

Rushmore Express Keystone

Rushmore Express Keystone

2.5 out of 5
320 Cemetery Road Keystone SD
Stay at this hotel in Keystone. Enjoy free breakfast, free WiFi, and free parking. Our guests praise the helpful staff and the clean rooms in our reviews. Popular ...
8.8/10 Excellent! (1,493 reviews)
"Clean and very nice staff."

Reviewed on Jun 21, 2026

Get rates
Rushmore Express Keystone
Roosevelt Inn Mount Rushmore

Roosevelt Inn Mount Rushmore

2 out of 5
206 Cemetery Rd Keystone SD
Stay at this hotel in Keystone. Enjoy free breakfast, free WiFi, and free parking. Our guests praise the breakfast and the helpful staff in our reviews. Popular ...
9.2/10 Wonderful! (1,770 reviews)
"Quaint hotel within walking distance to everything we wanted. Has a different breakfast each morning, which was nice. Staff was kind and helpful. AC made loud knocking noise and tv didn’t really work well."

Reviewed on Jun 21, 2026

Get rates
Roosevelt Inn Mount Rushmore
Powder House Lodge

Powder House Lodge

3.5 out of 5
24125 Hwy 16A Keystone SD
Stay at this lodge in Keystone. Enjoy free WiFi, free parking, and an outdoor pool. Our guests praise the restaurant and the helpful staff in our reviews. Popular ...
9.2/10 Wonderful! (1,012 reviews)
"This room was so cozy and great! We were lucky to get it from a cancellation and had a great stay. The staff was so kind and knowledgeable about the area and the room was clean and well stocked. We liked being in the woods and it was a quiet area"

Reviewed on Jun 21, 2026

Get rates
Powder House Lodge
Magnuson Grand Rushmore View

Magnuson Grand Rushmore View

2 out of 5
522 South Highway 16A Keystone SD
Stay at this hotel in Keystone. Enjoy free WiFi, free parking, and daily housekeeping. Our guests praise the helpful staff in our reviews. Popular attractions ...
7.8/10 Good! (666 reviews)
"Great location for Mt Rushmore, Crazy Horse and Custer Park. Staff was very friendly and helpful. Good location in Keystone and walking distance to the shops and restaurants. Rooms are dated, but only there to sleep. Nice view of Mt. Rushmore"

Reviewed on Jun 21, 2026

Get rates
Magnuson Grand Rushmore View
Ramada by Wyndham Keystone Near Mt Rushmore

Ramada by Wyndham Keystone Near Mt Rushmore

3 out of 5
115 Swanzey Street Keystone SD
Book a stay at this business-friendly hotel in Keystone. Enjoy free breakfast, free WiFi, and free parking. Our guests praise the helpful staff and the clean ...
8/10 Very Good! (1,006 reviews)
"Staff was good and attentive. Hotel itself is outdated. Very basic, no frills. Room wasn’t clean for the most part, moved the chair in the room and found a full pack of ritz crackers on the floor and an unopened cowtail candy on the side of the bed. not sure how long that had been there. Lights and ..."

Reviewed on Jun 19, 2026

Get rates
Ramada by Wyndham Keystone Near Mt Rushmore
Baymont by Wyndham Keystone Near Mt. Rushmore

Baymont by Wyndham Keystone Near Mt. Rushmore

2.5 out of 5
106 Highway 16A Keystone SD
Book a stay at this business-friendly hotel in Keystone. Enjoy free WiFi, free parking, and a 24-hour fitness center. Our guests praise the helpful staff and ...
7.8/10 Good! (1,288 reviews)
"The staff was very friendly and accommodating, but the property is old, and run down. The room had a stale odor, it seemed to come from the curtains. The. Hot tub had toddlers in it with diapers on, there was no suggestions to keep small children out of the hot tub. By the end of the night it looked ..."

Reviewed on Jun 20, 2026

Get rates
Baymont by Wyndham Keystone Near Mt. Rushmore
Quality Inn Keystone near Mount Rushmore

Quality Inn Keystone near Mount Rushmore

2.5 out of 5
231 Winter St. Keystone SD
Book a stay at this business-friendly hotel in Keystone. Enjoy free breakfast, free WiFi, and free parking. Our guests praise the helpful staff and the clean ...
8/10 Very Good! (1,001 reviews)
"Great place to stay downtown Keystone- parks ate close."

Reviewed on Jun 17, 2026

Get rates
Quality Inn Keystone near Mount Rushmore
Comfort Inn & Suites Mt. Rushmore

Comfort Inn & Suites Mt. Rushmore

3 out of 5
Keystone SD
Book a stay at this business-friendly hotel in Keystone. Enjoy free breakfast, free WiFi, and free parking. Our guests praise the breakfast and the helpful staff ...
9.2/10 Wonderful! (1,004 reviews)
"Showed up during a blizzard and it was absolutely beautiful! Amazing hotel!"

Reviewed on Jun 21, 2026

Get rates
Comfort Inn & Suites Mt. Rushmore
See all 1,407 properties in Keystone
Lowest nightly price found within the past 24 hours based on a 1 night stay for 2 adults. Prices and availability subject to change. Additional terms may apply.