RAP - STL

$195 Find Cheap Flights from Rapid City to St. Louis - Compare and Save

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Rapid City to St. Louis departing on 9/13. 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
$319
Typical prices: $323-$645
American Airlines
Wed 10/7Wed 10/14
RAP - STL • 1 stop
Cheapest one-way
$195
Multiple Airlines
Sun 9/13
RAP - STL • 1 stop
Top airlines
Cheapest • from $319 (round-trip)
Best reviews • 7.8 score
Airline reviews
Airline reviews
+1
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Airline reviews
Airline reviews
+1
Nonstop flights
Not available
There are currently no direct flights between Rapid City and St. Louis. You'll need at least 1 connection.
Insights
Insights
Insights
Insights
Top layover airports
Cheapest • Avg $395 (round-trip)
Shortest trip • 5h 04m (one-way)
Insights
Insights
Insights
Insights
When to travel
Cheapest • 100% price drop
Most popular
Good to know
Good to know
+1
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Good to know
Good to know
+1
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We hope you love your trip to St. Louis!
Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Rapid City to St. Louis (RAP-STL)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Rapid City to St. Louis 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 from Rapid City to St. Louis

Wed, Oct 7 - Wed, Oct 14
American Airlines Logo
5:04 pm - 11:42 pm
RAP
-
STL
5h 38m
1 stop
American Airlines Logo
5:40 am - 9:54 am
STL
-
RAP
5h 14m
1 stop
$319American Airlines
Thu, Sep 24 - Sun, Sep 27
American Airlines Logo
4:56 pm - 11:43 pm
RAP
-
STL
5h 47m
1 stop
American Airlines Logo
7:27 am - 11:15 am
STL
-
RAP
4h 48m
1 stop
$319American Airlines
Wed, Nov 4 - Tue, Nov 10
American Airlines Logo
6:11 am - 2:04 pm
RAP
-
STL
6h 53m
1 stop
American Airlines Logo
6:00 am - 12:39 pm
STL
-
RAP
7h 39m
1 stop
$319American Airlines
Wed, Nov 4 - Tue, Nov 10
American Airlines Logo
6:11 am - 2:04 pm
RAP
-
STL
6h 53m
1 stop
American Airlines Logo
2:54 pm - 9:27 pm
STL
-
RAP
7h 33m
1 stop
$319American Airlines
Wed, Nov 4 - Tue, Nov 10
United Airlines Logo
7:00 am - 12:38 pm
RAP
-
STL
4h 38m
1 stop
United Airlines Logo
1:08 pm - 8:43 pm
STL
-
RAP
8h 35m
2 stops
$324United Airlines
Mon, Aug 31 - Sat, Sep 5
United Airlines Logo
11:22 am - 4:34 pm
RAP
-
STL
4h 12m
1 stop
United Airlines Logo
4:40 pm - 10:28 pm
STL
-
RAP
6h 48m
1 stop
$339United Airlines
Fri, Nov 20 - Thu, Nov 26
Delta Logo
4:36 pm - 11:23 pm
RAP
-
STL
5h 47m
1 stop
Delta Logo
5:30 pm - 10:37 pm
STL
-
RAP
6h 07m
1 stop
$354Delta
Thu, Aug 27 - Thu, Sep 3
United Airlines Logo
8:55 am - 4:34 pm
RAP
-
STL
6h 39m
1 stop
United Airlines Logo
1:36 pm - 5:58 pm
STL
-
RAP
5h 22m
1 stop
$377United Airlines
Sat, Nov 21 - Fri, Nov 27
Delta Logo
11:29 am - 4:41 pm
RAP
-
STL
4h 12m
1 stop
Delta Logo
5:30 pm - 10:37 pm
STL
-
RAP
6h 07m
1 stop
$384Delta
Mon, Aug 31 - Fri, Sep 4
Delta Logo
4:30 pm - 11:26 pm
RAP
-
STL
5h 56m
1 stop
Delta Logo
6:20 am - 10:02 am
STL
-
RAP
4h 42m
1 stop
$567Delta
Booking Insights

KAYAK's insights & trends for Rapid City to St. Louis flights

Get data-powered insights and trends into flights from Rapid City to St. Louis to help you find the cheapest flights, the best time to fly and much more.

What is the cheapest month to fly from Rapid City to St. Louis?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Rapid City to St. Louis, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Rapid City to St. Louis is June, where tickets cost $0 (return) on average. On the other hand, the most expensive months are May and February, where the average cost of round-trip tickets is $560 and $539 respectively.

Good to know

Cheapest flight

$195
Most popular time to fly with an average 16% increase in price.
Flight from Rapid City to St. Louis

When to book flights from Rapid City to St. Louis

Are your dates flexible? Find out the best times to travel from Rapid City to St. Louis based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from Rapid City to St. Louis

  • What is the cheapest flight from Rapid City to St. Louis?

    In the last 5 days, the lowest price for a flight from Rapid City to St. Louis was $195 for a one-way ticket and $319 for a round-trip.

  • Do I need a passport to fly between Rapid City and St. Louis?

    Even though you are not required to have a passport, keep in mind that an official ID is needed to board the airplane.

  • Which aircraft models fly most regularly from Rapid City to St. Louis?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from Rapid City to St. Louis?

    SkyTeam, and Star Alliance are the airline alliances operating flights between Rapid City and St. Louis, with SkyTeam being the most commonly used for this route.

  • Which is the best airline for flights from Rapid City to St. Louis, Delta or United Airlines?

    The two airlines most popular with KAYAK users for flights from Rapid City to St. Louis are Delta and United Airlines. With an average price for the route of $323 and an overall rating of 7.8, Delta is the most popular choice. United Airlines is also a great choice for the route, with an average price of $411 and an overall rating of 7.4.

  • How does KAYAK find such low prices on flights from Rapid City to St. Louis?

    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 from Rapid City to St. Louis.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Rapid City to St. Louis?

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

  • What is the Hacker Fare option on flights from Rapid City to St. Louis?

    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 St. Louis with an airline and back to Rapid City with another airline. Booking your flights between Rapid City and STL can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Rapid City to St. Louis?

    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 St. Louis from Rapid City up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top airlines flying from Rapid City to St. Louis

 
See real verified KAYAK customer reviews for airlines flying from Rapid City to St. Louis. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Rapid City to St. Louis? 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.
7.8
DeltaOverall score based on 8494 reviews
8.5Crew
8.1Boarding
7.8Entertainment
7.2Food
7.8Comfort
Airline reviews

Your survey needs a N/A option. I didn’t use the entertainment or eat food.

10.0 ExcellentJon, Jul 2026
MCI - SLC
Read more Delta reviews

Your survey needs a N/A option. I didn’t use the entertainment or eat food.

The flight was over 2 hours late.. once we finally got boarded things were fine

Poor communication, we sat on the plane for an hour before pushing back. They were oversold and with a full plane kept looking for someone to step off for someone else to board. So after an hour wait at the gate we missed our departure window and proceeded to spend an additional hour on the tarmac waiting for a refiled flight plan according to the pilots. Occasional updates, somewhat insensitive crew to passengers needing to use the lavatory (it was 2 hrs beyond what anyone expected). Overall just poor execution...especially when the flight was listed as "arriving early" up until about 30 minutes past our departure time.

We departed early and made up time in the air allowing us to arrive 30 minutes early. Capt was incredibly genuine and thanked every passenger for flying with Delta. Completely humble and professional!

The boarding process needs to be refined. Sometimes the gate crew calls out the zones and then flip to showing the.zones boarding on the gate monitor display. So, unless you are huddled around the gate lanes watching the monitor, you could miss your boarding zone. Suggest the zones be announced each time a new zone is allowed to board.

This route with Delta always has delays or is cancelled. Aircrafts seem smaller and older. I fly Delta quite a bit - haven’t had issues with the international flights. But this route has always been the troublesome one

On 2 different flights the wifi was horrible and there was no drink or snack service.

There was no FREE wi-fi nor entertainment screens at all.

Great, on time departure, friendly and accommodating crew, great leg room, Smith flight

As we lined up to board they gave our plane to a flight going to Newark. So then we got delayed until they could find another plane. Flight crew was ok. I’m assuming since it’s a shorter flight they only offered water and coffee.

Flight was delayed “due to earlier delays of that plane”, so we were nearly three hours late.

Crew was amazing, takeoff wonderful. The bathroom was disgusting from before takeoff the odor made the flight uncomfortable as you could smell the bathroom from the center of the plane where we were sitting. Smelled like raw sewage. My daughter was throwing up as we landed due to the smell and horrible turbulence as we approached Newark.

Airport terminal was outdated, flight was on a small jet with no wifi

Essy to get on. The hostess gave very little pop, the plane was late getting in, and we are still waiting for our bags. This sucks. :/

Lately I like the planes have been exceptionally filthy. There’s lines of dust and dirt all across the ceiling in the vents, and the cracks in between the seats are literally full of food. It’s definitely not the quality of service that I was used to with United. I’m also very disappointed with the Wi-Fi! All I wanna do is knock out a few work jobs while I’m trapped in my seat And it spools so bad. They did provide me with a refund, but the process of getting that refund is so complicated. It’s unfortunate.

Excellent flight. Smooth, efficient boarding. Quick flight. Arrived early at STL.

Short flight - no food understandable. Flight was delayed for over an hour. Overall, it was good.

We boarded and buckled and then deplaned due to no pilot. Had to wait over 3 hours for a new pilot. Not weather related, just poor management.

Last minute gate change nearly caused us to miss our flight. Change was not announced or displayed in the main board at the old gate. Terrible communication. When we landed we had to wait 20 minutes because there was another plane at the assigned gate. Not the crew’s fault, but adding 20 minutes to a 45 minute flight sucked.

My flight was 3 hours late, which caused me to miss my connection in Denver. Further, this connecting flight was then Later canceled. This required me to stay another night an hour and a half away, and rent the rental car for an additional Night. I am still waiting for United Airlines to reimburse me for the inconvenience and Expense of having to extend my rental Car for An additional Day. See attached receipt. https://share.icloud.com/photos/0f5ns2AaeIr7w6t_uH1qfPBUg

Everything you need to know for your flight from Rapid City to St. Louis

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