How much is the cheapest flight to Keystone?

Prices were available within the past 7 days and starts at $88 for one-way flights and $115 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Reviews from verified customers

Feb 22, 2020

No issues. Thankful they waited since we had to walk so far and so fast to get there.

Feb 20, 2020

great staff on the ground & in the air. thanks for first-timer experience!!

Feb 17, 2020


Feb 11, 2020

The takeoff was delayed because they needed to de-ice the plane, but I appreciated that they made it safe for us. The flight was comfortable and staff was nice.

Jan 31, 2020

Only thing I did not like was their ability to get us to our destination ahead of time. But then you had to sit and wait 20 to 30 minutes on the tarmac. Just to get a gate. That was frustrating. So on our return flight we had 50 minutes from the time that we supposedly landed till our next plane took off. By the time we actually deplaned they were already boarding. So suggestion I guess would be that if the airlines can't guarantee then Expedia or whomever should not sell tickets to where we may miss a flight due to the airlines 20 to 30 minute on the tarmac. Waiting for gate

Jan 26, 2020

all of our delta flights had friendly attentive staff and the planes were clean. excellent job by everyone!

Jan 24, 2020

Just allow your customers to select seats when purchasing tickets. Flying together usually means we want to set together. Not hard to figure out.

Jan 16, 2020

Love having AA direct to Rapid City from PHX

Jan 12, 2020

Flight was on time!

Jan 10, 2020

My flight was delayed but everything was done to make me comfortable. Would fly again with United

Find Your Flights to Keystone RAP

Cheap flights to Keystone(RAP)

Get started finding a cheap flight to Keystone on Expedia by either choosing a deal on this page or entering into the search bar your travel dates, origin airport, and whether you want roundtrip or one-way airfare. You can filter for flexibility, number of stops, airline, and departure/arrival times to find the best flight for you.

We recommend using the ‘Flexible Dates’ calendar at the top of the page to see the price of plane tickets on the surrounding dates. This allows you to pick the cheapest days to fly if your trip allows flexibility and score cheap flight deals to Keystone.

Roundtrip prices range from $115 - $247, and one-ways to Keystone start as low as $88.

Be aware that choosing a non-stop flight can sometimes be more expensive while saving you time. And routes with connections may be available at a cheaper rate.

Airlines that fly to Keystone (RAP)

You have several options for which airline you choose to travel with to Keystone. There are 9 airlines flying into RAP: Delta, American Airlines, United. 

Cheap plane tickets may be available from different airlines at different times and with unique terms. It’s best to understand the details of each airline’s offer before judging its value.

For example, if you plan to check a bag or bring a carry-on, check whether the cheap airfare deal includes a baggage allowance. If not, verify whether the baggage fee is higher than the difference of other airline plane ticket deals offering free checked/carry-on baggage in exchange for a slightly higher airfare. 

Additionally, your preferred frequent flyer membership programs may influence your choice of cheap airline. Expedia allows you to enter your membership numbers during checkout to earn points from your airline and Expedia Rewards—all while getting a great deal and planning all your travel in one online platform.

Find the best deals

At Expedia, we source many flight deals from multiple providers, so you can easily find the best deals that are right for you. A great strategy for getting the best deals can be to make sure you book and travel at the optimal times. Airfare to Keystone (RAP) varies throughout the year based on seasonal demand. You’ll see the lowest rates for roundtrips to RAP in June and in June for one-ways.

Cancellation & flexibility

To change or cancel eligible flights, go to ‘My Trips’ and navigate to your itinerary. If you booked within the last 24-hours, you might be able to cancel your flight for free. Learn more about flight changes or cancellations from our customer service portal. Some plane tickets are available with no change fees, which you can filter for during your search.

Trending flights to Keystone

Prices were available within the past 7 days and starts at $88 for one-way flights and $115 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.