$59 Find Cheap Flights to Keystone

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight to Keystone departing on 3/11. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

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Everything you should know

Cheapest round-trip
$215
United Airlines
Fri 5/8Mon 5/11
ORD - RAP • 1 stop
Cheapest non-stop
$248
American Airlines
Tue 4/14Sat 4/18
ORD - RAP • Non-stop
Top routes
ATL
-
RAP
Cheapest
ORD
-
RAP
Most popular
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We hope you love your trip to Keystone!
Flight Deals
Useful Info
Flight Deals

Cheap Flights to Keystone

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights to Keystone that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals to Keystone

Fri, May 8 - Mon, May 11
United Airlines Logo
2:18 pm - 8:43 pm
ORD
-
RAP
7h 25m
1 stop
United Airlines Logo
12:10 pm - 3:23 pm
RAP
-
ORD
2h 13mnonstop
$215United Airlines
Tue, Apr 14 - Sat, Apr 18
American Airlines Logo
9:46 am - 4:23 pm
ORD
-
RAP
7h 37m
1 stop
American Airlines Logo
11:44 am - 3:10 pm
RAP
-
ORD
2h 26mnonstop
$219American Airlines
Sat, Feb 14 - Tue, Feb 17
Delta Logo
6:15 am - 10:05 am
ORD
-
RAP
4h 50m
1 stop
Delta Logo
4:29 pm - 9:30 pm
RAP
-
ORD
4h 01m
1 stop
$229Delta
Fri, Feb 6 - Mon, Feb 9
Delta Logo
6:15 am - 10:11 am
ORD
-
RAP
4h 56m
1 stop
Delta Logo
10:54 am - 9:05 pm
RAP
-
ORD
9h 11m
2 stops
$234Delta
Fri, Apr 17 - Sun, Apr 19
United Airlines Logo
2:10 pm - 7:02 pm
ORD
-
RAP
5h 52m
1 stop
United Airlines Logo
9:20 am - 12:45 pm
RAP
-
ORD
2h 25mnonstop
$238United Airlines
Fri, Apr 17 - Sun, Apr 19
United Airlines Logo
7:55 pm - 9:36 pm
ORD
-
RAP
2h 41mnonstop
United Airlines Logo
9:20 am - 12:45 pm
RAP
-
ORD
2h 25mnonstop
$239United Airlines
Fri, Feb 6 - Mon, Feb 9
Delta Logo
1:58 pm - 10:28 pm
ORD
-
RAP
9h 30m
2 stops
Delta Logo
10:54 am - 9:05 pm
RAP
-
ORD
9h 11m
2 stops
$240Delta
Tue, Apr 14 - Sat, Apr 18
American Airlines Logo
9:40 am - 11:14 am
ORD
-
RAP
2h 34mnonstop
American Airlines Logo
11:44 am - 3:10 pm
RAP
-
ORD
2h 26mnonstop
$248American Airlines
Fri, Jul 3 - Mon, Jul 6
Sun Country Air Logo
11:51 am - 3:52 pm
JFK
-
RAP
6h 01m
1 stop
Sun Country Air Logo
5:21 pm - 10:53 am
RAP
-
JFK
15h 32m
1 stop
$275Sun Country Air
Fri, Jun 19 - Mon, Jun 22
Sun Country Air Logo
9:06 am - 4:22 pm
SFO
-
RAP
6h 16m
1 stop
Sun Country Air Logo
5:27 pm - 5:13 pm
RAP
-
SFO
24h 46m
1 stop
$285Sun Country Air
Useful Info

Good to know - Book Cheap Keystone Plane Tickets

Low seasonJanuary
Cheapest flight$155
Most popular time to fly and prices are also 10% lower on average.
Flight from Atlanta to Rapid City

FAQs - booking Keystone flights

  • How long is the flight to Keystone?

    Flights from Chicago2h 30m
    Flights from Dallas2h 30m
    Flights from Las Vegas2h 21m
    Flights from Minneapolis1h 46m
    Flights from Denver1h 27m
  • What is the cheapest flight to Rapid City?

    In the last 3 days, the cheapest flight deal to Rapid City was found on the route from Atlanta, at $215 return. The most popular connection is from Chicago to Rapid City and KAYAK users have found round-trip deals for as low as $215 in the last 3 days.

  • Which airlines fly to Rapid City?

    Many airlines fly to Rapid City, the most common ones being United Airlines, Delta, and American Airlines. See the amount of flights per week for popular airlines flying to Rapid City.

  • How to fly to Keystone?

    You cannot fly directly to Keystone. KAYAK recommends you fly to Rapid City (RAP) (20.41 miles from Keystone). From there you can rent a car or get a taxi.

  • What airports are near Keystone?

    The closest airport is Rapid City (RAP) (20.41 mi). Another nearby airport is Chadron (CDR) (74.83 mi). KAYAK recommends you fly to Rapid City.

  • How far is Rapid City Airport from central Rapid City?

    You’ll need to travel 9 miles to reach the Rapid City city center from Rapid City Airport.

  • What is the name of Rapid City’s airport?

    All flights to Rapid City land at Rapid City Airport. The airport code is RAP,and it can also be referred to as Rapid City or Rapid City Regional.

  • How does KAYAK find such low prices on flights to Keystone?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights to Keystone.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket to Keystone?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Keystone is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights to Keystone?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Keystone with an airline and back with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight to Keystone?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Keystone up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Top tips for finding cheap flights to Keystone

  • There is no major airport in Keystone. It is instead served by Rapid City Airport.
  • Looking for cheap airfare to Keystone? 25% of our users found round-trip tickets to Keystone for the following prices or less: From Denver $344
  • Enter your preferred departure airport and travel dates into the search form above to unlock the latest Keystone flight deals.

Reviews of the top 5 airlines flying to Keystone

 
Need help choosing which airline to fly with from the United States to Keystone? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.9
DeltaOverall score based on 8049 reviews
7.8Entertainment
7.9Comfort
8.5Crew
7.2Food
8.1Boarding
Airline reviews

It was good because we traveled without luggage, carry on only.

8.0 ExcellentAnonymous, Jan 2026
ATL - EWR
Read more Delta reviews

It was good because we traveled without luggage, carry on only.

I usually get upgraded so my experience is usually amazing. I did not get upgraded this time - which was fine - but the wifi had issues, the monitors were going in & out, & (though not Delta's fault) one of the gentlemen next to me desperately needed a shower.

The entertainment screens were not working and there was no air condition the entire flight. Very uncomfortable.

I have diamond medallion status and usually we are in comfort plus . We were in main this time ( which was fine ) and my husband wanted wine . I have at least 10 vouchers for drinks that are good for this year and next! The attendant would not take the picture of the voucher as proof and never came back to check as She asked me to pull it up on delta Wi-Fi. Instead my husband just used his Amex to buy the wine . Disappointing!!!

Food is basically Sun Chips, cookies or Cheezits. I had an exit row seat so I had plenty of room. The crew was very nice and efficient. Pilot kept us informed. Pretty good flight.

Air travel sucks. It continues to be awful for all airlines. No shame on delta alone.

It was Delta, but the flight attendants were stressful and disrespectful. I am a diamond member a travel weekly. I have not had a negative thing to share in quite some time. But this was noticeable.

Comfort Plus seat 11E seemed smaller than prior flights. The movie selection is good. Watched most of the most recent Tron movie. I'll watch the remaining part later as my movie is saved in the Delta Seatback Experience.

Flight was late from Newark to Atlanta, I asked flight attendant to please let my family of 3 out first when we landed to Atlanta because we were late for our connecting flight to Quito. She didn't and we were late for 5 minutes we couldn't board the plane and spend hours trying to get another flight with customer service for the next day.

I really liked the legroom. I am 6’4”.a at For some reason our seats were not together and using the app to fix it didn’t work. Passengers were nice enough to move for us but you should absolutely ensure a parent sits with their child.

Was happy we finally got upgraded in 1st class. The seat getting old. The cushiness need some improvement.

Yet another flight in which beverage and snack service was skipped. Other that that, firmly mediocre. Landed early, to gate late due to congestion at the gates. Airline's fault or airports fault: unknown.

Miserable. They moved my seat, but canceled the next leg of my flight. I resolved the issue at my transfer, but that resulted in lost luggage that has taken days off my schedule with no resolution. Worse, they fail to interface effectively with Lufthansa, forcing me to bounce between two equally useless help desks. The apps are unable to handle the situation, the bag dropped off the tracker, and while the call centers are polite, they do not provide written information to assist with cross-airline communication.

left on time, reasonable boarding process arrived early luggage came out quickly

I like flying first class, and United has a nice one

Teeny tiny bathrooms, crew was not realistic about when we'd arrive.

Check-in, boarding and the flight from Phoenix to Houston was quick and easy. The flight from Houston to Shreveport was delayed 5 hours. It was frustrating but I think United handled it the best they could.

They lost my luggage, so, not happy. The crew was nice but my suitcases never made it, still trying to find out what happened!

The staff was hospitable and professional. The seat had a bit of wear. The winner shade was stuck 1/4 open. I received the best of both worlds. The morning sun was able to come in and blind the screen i was trying to use while at the same time it was too low to look out and enjoy the view. Rather embarrassing for a 1st class ticket.

Perfect flight. Smooth flight. Arrived 20 minutes early at destination. Excellent service.

We were upgraded to First Class and it was a great flight

Amazing I love American. I’ll never fly anyone else if I can help it.

I love American. I’ll never fly anyone else if I can help it.

Flight delay and multiple gate changes including a change near boarding time to another terminal, which in DFW is a pain. Pre-boarding delay and also a further delay on the ground after boarding. About an hour and a half total delay.

On the plus side, crew was attentive, drinks were cold, and in-flight entertainment selection was better than some other airlines. On the negative aide, Plane was delayed almost an hour, either no announcements from the gate crew. Biscoff cookies are gross, appreciate airlines that give a choice. Also, crew had no personality or enthusiasm at all.

Little warm on the plane and delayed for an hour

Tell the crew (when boarding) to yell at the imbeciles blocking us from walking up to scan. I promise everyone crowds around and half of us (most the time I’m group 4) have to push our way through. Your staff is awesome, the public - not so much-

Bags took over and hour to come out. Delays due to wind caused rebooking.

The flight was good. We had to spend almost an hour on the tarmac when we arrived in Dallas. Waiting for a gate. What’s the point of arriving early if you have no gate to park at?

Lower WiFi prices; allow us to see our flight on a map; more variety of drink choices.

It was fine. Nobody was outstandingly friendly but no one was rude and everything was smooth . The captain thanked us for flying but no one greeted me as I walked on the plane or as I exited which is the least they could do lol

Clean, friendly, roomy. But check-in from the phone link was terrible. Repeated attempts wouldn’t save at the final step. Just kept spinning! It was very frustrating. Finally, I used the app (vs website link) to check-in which worked very smoothly on the first attempt.

Check in on the web portal was cumbersome! After several attempts I finally got the boarding pass.

Excellent flight and even arrived 23 min early. No entertainment , or wi fi on board, but I downloaded a couple of movies beforehand which kept me entertained. Really like flying Allegiant airlines.

WE were delayed about an hour and never any communications from the employees working the gate. We also were moved to a total of three gates.

I love how they show love to their customers and care about them too.

I liked how when I got on board how fast we ended up taking off but what I truly disliked was how uncomfortable the seats were. There was truly never a time that I could ever get comfortable during both of my flights. The seats could get away during shorter flights but flights 3 hour plus makes it hard to enjoy.

The crew was great and the flight was very smooth. Can’t really judge food since I did not get any because it costs money. The seat was comfortable for what we bought. Thanks!

Crew was great. No entertainment and food and beverage was for purchase only, even water

It was canceled. The flight wasn’t rescheduled, everyone had to figure out their own new arrangements. They said we would get refunded our original fare and receive an additional $150. We received links for $100 only and they expired before we could activate them.

3 seperate extremely rude unhelpful staff. Delayed flight. Lost my bag

Sat between 2 big men. I was uncomfortable. Flight was delayed twice. About 2 hours altogether.

It was a good experience. I do wish the seats were roomier. Also, I did not like being charged for my carry on bag

Exceptional take off and landing in snow and wind…thank you to the well skilled pilots!

I liked entertainment system being downloaded on my iPad. The selections were limited but I appreciated being able to use my own screen. The flight was just fine. My only issue was both terminals being far from the main airport. Especially stoning at LAX near midnight and having to wait for a bus to take us to baggage pickup. Very inconvenient.

Just fine but comfort is always an issue since the seats are so close

The Flight was fine, the staff treated me well, the flight got delayed over 5 1/2 hours for maintenance issues....but it worked out OK,, they were very apologetic about it, and it is better to not fly if there is any issue than endanger peoples lives, so in reality that was a good thing, It did cost me extra for parking because I went beyond the time I had purchased for parking at MSP. But all in all, Good flight

I did not take this flight because the reservation made by Kayak was wrong! Kayak owes me a trip from Minneapolis to Duluth.

When I got to the airport in Seattle, they told me the flight "did not exist". Kayak reserved me a seat on a flight that did not exist. This is inexcusable. I was able to change my reservation to a flight that actually did exist, but the flight was later and then I didn't make it in time for the next leg of my trip from Minneapolis to Duluth. Kayak owes me a trip from Minneapolis to Duluth, and a big apology for messing up my reservation.

The plane was freezing cold. Asked for a blanket and there were none. Was told twice that the pilots would warm the plane and it never happened Worst experience flying ever

Everything you need to know for your flight to Keystone