$112 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 11/12. 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

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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

Tue, Nov 4 - Thu, Nov 6
Multiple Airlines Logo
8:55 pm - 9:24 amSFO-RAP
11h 29m1 stop
Multiple Airlines Logo
9:44 pm - 8:44 amRAP-SFO
12h 00m1 stop
$208Multiple Airlines
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Sun, Nov 2 - Thu, Nov 6
Multiple Airlines Logo
5:45 am - 8:54 pmSFO-RAP
14h 09m1 stop
Multiple Airlines Logo
9:44 pm - 8:44 amRAP-SFO
12h 00m1 stop
$214Multiple Airlines
Find Deal
Sun, Nov 2 - Thu, Nov 6
Multiple Airlines Logo
5:45 am - 8:54 pmSFO-RAP
14h 09m1 stop
Multiple Airlines Logo
9:44 pm - 8:44 amRAP-SFO
12h 00m1 stop
$215Multiple Airlines
Find Deal
Tue, Nov 4 - Thu, Nov 6
Multiple Airlines Logo
7:30 am - 9:24 amSFO-RAP
24h 54m2 stops
Multiple Airlines Logo
9:44 pm - 8:44 amRAP-SFO
12h 00m1 stop
$218Multiple Airlines
Find Deal
Thu, Dec 4 - Tue, Dec 9
Delta Logo
8:50 am - 2:09 pmORD-RAP
6h 19m1 stop
Delta Logo
2:51 pm - 9:40 pmRAP-ORD
5h 49m1 stop
$229Delta
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Wed, Dec 24 - Tue, Jan 6
Delta Logo
5:59 pm - 10:41 pmMDW-RAP
5h 42m1 stop
Delta Logo
10:40 am - 6:08 pmRAP-MDW
6h 28m1 stop
$229Delta
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Wed, Oct 29 - Sun, Nov 2
United Airlines Logo
7:10 am - 11:05 amORD-RAP
4h 55m1 stop
United Airlines Logo
1:30 pm - 4:57 pmRAP-ORD
2h 27mnonstop
$239United Airlines
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Fri, Mar 13 - Sun, Mar 15
United Airlines Logo
2:09 pm - 8:33 pmORD-RAP
7h 24m1 stop
United Airlines Logo
5:10 am - 11:19 amRAP-ORD
5h 09m1 stop
$244United Airlines
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Thu, Dec 11 - Sun, Dec 14
American Airlines Logo
5:18 am - 1:12 pmORD-RAP
8h 54m1 stop
American Airlines Logo
1:47 pm - 11:26 pmRAP-ORD
8h 39m1 stop
$269American Airlines
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Sat, Oct 25 - Tue, Oct 28
American Airlines Logo
8:30 am - 4:03 pmORD-RAP
8h 33m1 stop
American Airlines Logo
4:59 pm - 11:42 pmRAP-ORD
5h 43m1 stop
$279American Airlines
Find Deal

Everything you should know

Top routes
ORD-RAP
Cheapest
MSP-RAP
Most popular
Insights
Insights
Insights
Insights
Cheapest round-trip
$208
Overall average: $439
Multiple Airlines
Tue 11/4Thu 11/6
SFO - RAP • 1 stop
Cheapest non-stop
$279
United Airlines
Thu 10/30Sun 11/2
ORD - RAP • Non-stop
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KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to Keystone!
Useful Info

Good to know - Book Cheap Keystone Plane Tickets

Low seasonJanuary
Cheapest flight$112
Best time to beat the crowds but there is an average 2% increase in price.
Most popular time to fly and prices are also 0% lower on average.
Flight from Chicago O'Hare Airport to Rapid City

FAQs - booking Keystone flights

  • How long is the flight to Keystone?

    Flights from Chicago2h 36m
    Flights from Dallas2h 28m
    Flights from Las Vegas2h 19m
    Flights from Minneapolis1h 49m
    Flights from Denver1h 22m
  • 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 Chicago, at $208 return. The most popular connection is from Minneapolis to Rapid City and KAYAK users have found round-trip deals for as low as $319 in the last 3 days.

  • Which airlines fly to Rapid City?

    Many airlines fly to Rapid City, the most common ones being United Airlines, American Airlines, and Delta. 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 Las Vegas $82, from Denver $379
  • 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 7972 reviews
7.9Entertainment
8.2Boarding
7.3Food
8.5Crew
7.9Comfort
Airline reviews

On time flight. Seat comfort could be better in the Comfort section.

10.0 ExcellentMichael, Oct 2025CLT - MSP
Read more Delta reviews

On time flight. Seat comfort could be better in the Comfort section.

My issue was with TSA agents for delta airlines. My luggage got flagged. The agent was going thru another persons first. He took 20 min to go thru hers. I asked them to bring mine closer so I could sit down . They said you can go sit it will be fine. I said I am supposed to keep my eyes on my bags at all times. The agent was meticulously unwrapping 2 gifts that the lady had and then tried to re warp it. He was trying to be kind i get it but 20 min for me to stand watching him do that was ridiculous. It was 6 am and there were a ton of travelers. Mine was flagged for some air packed tea that I bought in Turkey. My previous delta flight and 2 others before didn’t flag it. Consistency would be nice. Also on the flight the window shades were down for take off and landing - I thought that was very odd I thought they had to remain open for take off and landing.

The flight was an hour and a half late departing which was inconvenient

Delay in SLC jammed us up in Chicago. Got caught up in rush hour traffic

The crew took good care of us. The flight from ATL to SFO is a longer one, and there were multiple beverage offerings. I like the 757's that Delta uses. Good airplane that is comfortable. I do wish Delta would separate Priority boarding from the better seats. I would gladly take a smaller seat in an open row than be jammed into Comfort just to get priority boarding, just to make sure I don't have to check a bag.

The flight was great. The gate location was way to far away!!!

The flight attendant in first class was beyond rude and didn't care at all about her job. AND the gate agent was even worse than the flight attendant for rudeness. She was awful.

Gate agent rushed to fill hot jetway with crowd so it took over 12 minutes to go from gate to plane. Just like a discount airline Pooly prepared cabin and third time that claim of rough air prevented any cabin service. Friends on a Southwest flight at similar time had service.

Cramped seating for me. Luckily it wasn’t a long flight

Lounge in Lagos is terrible, food on board from Lagos to Atlanta was horrible. Only bright spot the cabin crew were awesome.

Crew seemed a bit cranky. No seatback screens. But boarding was efficient and on time and we arrived early.

The worst landing I have ever had on a domestic flight. Thought we would lose the landing gear on landing in Newark. Then we spent 40 minutes trying to position the plane in the right place to be able to get the jet way to the plane. The plane arrived stopped. The announcer was that we were there. Everybody got up, then we were told to sit back down because they had to have us towed to a different position. We got towed and then everyone stood up and they told us we were in the wrong position to sit back down again, and then we got towed to a different position This did not happen immediately. It was 30 minutes while we wandered around a small section of the tarmac in Newark close to the gate, but apparently not close enough. Horrifying experience The CAB should be investigating that flight

Boarding was organized. Plane seats comfortable and service was attentive. Food options were good.

This was a very average flight. The seat was out of alignment so more uncomfortable than usual. The cabin felt not well maintained. But I safely got where I needed to go.

Trip was great. A wild landing in Ottawa with the wind and rain, but the pilot did a great job. Always love flying United.👍

I will never book a flight through Cheap fare. They booked me from Portland Main . And would not give me a refund, so I bought 2 tickets one for 299. From Portland Main to ORD. Then I had to buy a ticket from Oregon PDX to ORD that was another 440. So Just so you know they even told me it was there fault but no refund. Bad bussniess. I did inform United but they said they couldn't help me due to the fact I booked through Cheap Tickets. Never again. And I'm spreding the word. I let everyone know at my 50th class reunion

The internet service I paid for didn’t work at all and the flight crew was not very friendly.

Excellent experience. Starting with the agent at the Premier bag drop who noticed I was very early for my scheduled flight and offered to rebook me on an earlier flight with my seat preference. She would not let me leave the counter until she knew that all of the changes and new boarding pass showed up on my United app. At the gate, the flight boarded quickly such that we departed early and the flight was smooth. We arrived 20 minutes early at ORD and I was able to be home in time for dinner. One of the best flights I've had.

Late FA meant slow boarding. WiFi did not work. I’m a medium plus sized passenger. The seatbelt was for the first time ever barely fitting. And we delayed on the tarmac 40 min

Salina to travers city was great! But the sept 24 Tranverse city was not! Traverse city to chichago was cancelled, i went to Denver & got to Salina 6 hours later!

Mostly good. Flight was crowded but Airline personnel were very friendly & accommodating. It would be good to have savory snacks rather than just sweet Biscoff cookies.

It was a typical flight. We had a delay which seems to be the normality now. And we had no in flight service due to conditions.

Flight attendants on this flight were very attentive and friendly

After we landed we sat on the tarmac for 1.5 hours waiting to get to our gate. Ridiculous.

the trip to madrid was uncomfortable with my legs touching the seat in front of me

The plane was late, when we did board the plane was as cold as a freezer. I was freezing the entire flight, no blankets. Lost miserable flight I’ve ever had.

Terrible. Flight delayed for more than 8 hours with only a $12 meal voucher provided for the inconvenience. The airplane did not have breaks on arrival yet they still made us go through the motions and board on time knowing we could not take off then sit for 40+ minutes before having to get of the time. A complete waste of my time. I cannot believe they can stay business with these shenanigans. I’ll avoid this company like the plague moving forward as the lack of accountability is disgraceful.

This was the best 2 flights I have had with American out of SGF. Great crew both flights.

We were delayed for a “couple of maintenance issues.” They were resolved rather quickly but a computer glitch caused someone in the airport to have to bring a physical copy of the paperwork so we could leave. I don’t know where they had to drive from to get to our plane but it took forever & we were 1 1/2 hrs late in leaving. The flight itself was fine.

You can plug your phone in & use their wifi to watch movies, etc, but the plane’s wifi was disconnected for most of the flight.

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.

The plane had originated in Las Vegas at 6:30 in the morning and flew to Moline where we boarded. The flight left around 12:30 PM and there were no boxed snacks available and many of the alcoholic beverages were unavailable. I would find it hard to believe that that many of the passengers coming from Las Vegas at 6:30 in the morning, drank and ate that much of the items. I can only come to the conclusion that someone failed to stock the plane for the round-trip. This is a huge revenue failure for the airline and disappointment for the passengers. The flight crew did not seem happy to be there and did not engage with passengers. Allegiant you can do better.

They did not let my husband on the plane with our service animal at the last minute. Do NOT fly this airline with a service animal!

Tight! Seats are not designed for those of us who wear extra-large clothes.

The non-stop flight from Grand Rapids was excellent. I neither expected or needed a budget flight and Allegiant made the trip easy and for an affordable price, Arriving at the Mesa Airport (AZA) is a delight compared to the international airport. For our return flight, we were able to arrive 75 minutes before the flight, return the rental car, check our bag and make it to the gate in plenty of time. That would never happen at most airports.

Easiest flights I’ve ever taken. Plane was comfortable without overly crowded seating.

Terrible. Still have not received the refund from them. They sent it to some account that I don't even know. Spoke with costumer service and they are unable to help.

I didn’t like it at all. I miss my second flight because of the delay on Allegiant Air now I m stuck in MCO.

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

Multiple delays because they screwed up on the crew schedule and had to wait for over an hour for more people to come.

It was good. Basic flight. Drinks only. Pay budget. Get budget and I’m good with that. I want to get where I need to go. Not hard to please. Female First Officer is an absolute bonus for me!

The Wi-Fi was off, the arm rests are hard plastic.

The assistance with the wheel chairs was fabulous. All the people were so very friendly and helpful. I want to thank them all.

We almost missed our return flight. We got to the gate one minute from closing the cabin door, and the agent got us aboard the plane! We are so very grateful!!!!!

I already filled out a survey for this flight. We booked through KAYAK with airfare assist, and airfare assist did not confirm or honor our flight. Therefore, we had to go to a different place with a different travel agency. I tried very hard with airfare assist, They also promoted this on cheapair.com, but it was a bait and switch in both instances.

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