$322+ Cheap flights from St. Louis to Rapid City (STL - RAP)
This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 10/31. Fares are subject to change and may not be available on all flights or dates of travel.
STL — RAP
Nov 26 — Dec 31
Round-trip
1 adult, Economy
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Find cheap flights from St. Louis to Rapid City with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheap flight deals from St. Louis to Rapid City
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Cheapest flights from St. Louis to Rapid CityExplore the most affordable flight options available from St. Louis to Rapid City. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 27, 2026.
Explore the most affordable flight options available from St. Louis to Rapid City. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 27, 2026.
This United Airlines deal was found by Cheapflights users on 10/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/38:40 am -
1 stop5h 23m
Sun 12/67:00 am -
1 stop4h 53m
Deal found 10/24![United Airlines logo]()
$339
This United Airlines deal was found by Cheapflights users on 10/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/126:00 am -
1 stop5h 31m
Sat 11/145:00 am -
1 stop6h 38m
Deal found 10/24![United Airlines logo]()
$354
This United Airlines deal was found by Cheapflights users on 10/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/131:40 pm -
1 stop6h 39m
Sun 11/151:30 pm -
1 stop7h 10m
Deal found 10/24![United Airlines logo]()
$368
This United Airlines deal was found by Cheapflights users on 10/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/95:00 am -
1 stop6h 31m
Thu 11/1210:30 am -
1 stop5h 27m
Deal found 10/26![United Airlines logo]()
$369
This United Airlines deal was found by Cheapflights users on 10/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/214:39 pm -
1 stop5h 04m
Sat 11/285:50 pm -
1 stop4h 49m
Deal found 10/22![United Airlines logo]()
$390
This American Airlines deal was found by Cheapflights users on 10/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/37:27 am -
2 stops15h 05m
Sun 12/61:09 pm -
1 stop8h 11m
Deal found 10/24![American Airlines logo]()
$397
This United Airlines deal was found by Cheapflights users on 10/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/318:50 am -
1 stop4h 58m
Sat 11/71:30 pm -
1 stop4h 53m
Deal found 10/24![United Airlines logo]()
$399
This American Airlines deal was found by Cheapflights users on 10/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/3111:31 am -
2 stops11h 08m
Sat 11/71:09 pm -
2 stops9h 50m
Deal found 10/24![American Airlines logo]()
$409
This Delta deal was found by Cheapflights users on 10/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/36:21 am -
1 stop5h 24m
Sat 11/711:29 am -
1 stop4h 09m
Deal found 10/25![Delta logo]()
$429
Best flights from St. Louis to Rapid CityDiscover carefully curated flight deals from St. Louis to Rapid City that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated October 27, 2026.
Discover carefully curated flight deals from St. Louis to Rapid City that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated October 27, 2026.
This United Airlines deal was found by Cheapflights users on 10/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/38:40 am -
1 stop5h 23m
Sun 12/67:00 am -
1 stop4h 53m
Deal found 10/24![United Airlines logo]()
$339
This American Airlines deal was found by Cheapflights users on 10/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/3111:31 am -
2 stops11h 08m
Sat 11/71:09 pm -
2 stops9h 50m
Deal found 10/24![American Airlines logo]()
$409
This Delta deal was found by Cheapflights users on 10/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/236:30 am -
1 stop5h 49m
Sun 12/274:37 pm -
1 stop5h 51m
Deal found 10/25![Delta logo]()
$573
This United Airlines deal was found by Cheapflights users on 10/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/126:00 am -
1 stop5h 31m
Sat 11/145:00 am -
2 stops8h 34m
Deal found 10/24![United Airlines logo]()
$359
This United Airlines deal was found by Cheapflights users on 10/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/131:40 pm -
1 stop6h 39m
Sun 11/151:30 pm -
1 stop7h 10m
Deal found 10/24![United Airlines logo]()
$368
This United Airlines deal was found by Cheapflights users on 10/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/96:00 am -
1 stop5h 31m
Thu 11/1212:39 pm -
2 stops8h 01m
Deal found 10/26![United Airlines logo]()
$374
This United Airlines deal was found by Cheapflights users on 10/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/214:39 pm -
1 stop5h 04m
Sat 11/285:50 pm -
1 stop4h 49m
Deal found 10/22![United Airlines logo]()
$390
This United Airlines deal was found by Cheapflights users on 10/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/318:50 am -
1 stop4h 58m
Sat 11/71:30 pm -
1 stop4h 53m
Deal found 10/24![United Airlines logo]()
$399
This United Airlines deal was found by Cheapflights users on 10/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/95:00 am -
1 stop6h 31m
Wed 11/111:30 pm -
1 stop7h 10m
Deal found 10/25![United Airlines logo]()
$729
Last-minute flights from St. Louis to Rapid CityDiscover last-minute flight deals from St. Louis to Rapid City. Data last updated October 27, 2026 and is based on user searches.
Discover last-minute flight deals from St. Louis to Rapid City. Data last updated October 27, 2026 and is based on user searches.
This United Airlines deal was found by Cheapflights users on 10/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/318:50 am -
1 stop4h 58m
Sat 11/71:30 pm -
1 stop4h 53m
Deal found 10/24![United Airlines logo]()
$399
This American Airlines deal was found by Cheapflights users on 10/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/3111:31 am -
2 stops11h 08m
Sat 11/71:09 pm -
2 stops9h 50m
Deal found 10/24![American Airlines logo]()
$409
This Delta deal was found by Cheapflights users on 10/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/36:21 am -
1 stop5h 24m
Sat 11/711:29 am -
1 stop4h 09m
Deal found 10/25![Delta logo]()
$429
This United Airlines deal was found by Cheapflights users on 10/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/95:00 am -
1 stop6h 31m
Thu 11/1210:30 am -
1 stop5h 27m
Deal found 10/26![United Airlines logo]()
$369
This United Airlines deal was found by Cheapflights users on 10/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/126:00 am -
1 stop5h 31m
Sat 11/145:00 am -
1 stop6h 38m
Deal found 10/24![United Airlines logo]()
$354
This United Airlines deal was found by Cheapflights users on 10/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/131:40 pm -
1 stop6h 39m
Sun 11/151:30 pm -
1 stop7h 10m
Deal found 10/24![United Airlines logo]()
$368
This United Airlines deal was found by Cheapflights users on 10/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/214:39 pm -
1 stop5h 04m
Sat 11/285:50 pm -
1 stop4h 49m
Deal found 10/22![United Airlines logo]()
$390
One-way flights from St. Louis to Rapid CitySearch for one-way flight options from St. Louis to Rapid City. Find affordable one-way fares based on user searches. Data last updated October 27, 2026.
Search for one-way flight options from St. Louis to Rapid City. Find affordable one-way fares based on user searches. Data last updated October 27, 2026.
This Kiwi.com deal was found by Cheapflights users on 10/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/317:59 pm -
2 stops17h 40m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/22![Multiple Airlines logo]()
$322
This American Airlines deal was found by Cheapflights users on 10/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/315:40 am -
1 stop5h 14m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/22![American Airlines logo]()
$361
Find flight deals from St. Louis to Rapid City
Discover tips and strategies to find the most affordable flight options for your journey from St. Louis (STL) to Rapid City (RAP). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated October 27, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $339 (United Airlines) |
One-way from | $322 (Kiwi.com) |
Popular in | October |
Cheapest in | February |
Average price | $710 |
Cheapflights Fare Finder
Customize your flight search to find flights from St. Louis to Rapid City that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 7,457,451 searches. Data last updated October 27, 2026.
Use the filters below to find and compare flights from St. Louis to Rapid City that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
St. LouisRapid City
STL Lambert-St Louis - RAP Rapid City
STLRAP
Lambert-St Louis
Sat 10/31
7:59 pm-12:39 pm
2 stops17h 40m
Rapid City
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$322
St. LouisRapid City
STL Lambert-St Louis - RAP Rapid City
STLRAP
Lambert-St Louis
Thu 12/3
8:40 am-1:03 pm
1 stop5h 23m
Rapid City
Sun 12/6
7:00 am-12:53 pm
1 stop4h 53m
$339
St. LouisRapid City
STL Lambert-St Louis - RAP Rapid City
STLRAP
Lambert-St Louis
Thu 11/12
6:00 am-10:31 am
1 stop5h 31m
Rapid City
Sat 11/14
5:00 am-2:34 pm
2 stops8h 34m
$359
Quickest round-trip
St. LouisRapid City
STL Lambert-St Louis - RAP Rapid City
STLRAP
Lambert-St Louis
Sat 10/31
5:40 am-9:54 am
1 stop5h 14m
Rapid City
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$361
St. LouisRapid City
STL Lambert-St Louis - RAP Rapid City
STLRAP
Lambert-St Louis
Fri 11/13
1:40 pm-7:19 pm
1 stop6h 39m
Rapid City
Sun 11/15
1:30 pm-9:40 pm
1 stop7h 10m
$368
St. LouisRapid City
STL Lambert-St Louis - RAP Rapid City
STLRAP
Lambert-St Louis
Mon 11/9
6:00 am-10:31 am
1 stop5h 31m
Rapid City
Thu 11/12
12:39 pm-9:40 pm
2 stops8h 01m
$374
St. LouisRapid City
STL Lambert-St Louis - RAP Rapid City
STLRAP
Lambert-St Louis
Sat 11/21
4:39 pm-8:43 pm
1 stop5h 04m
Rapid City
Sat 11/28
5:50 pm-11:39 pm
1 stop4h 49m
$390
St. LouisRapid City
STL Lambert-St Louis - RAP Rapid City
STLRAP
Lambert-St Louis
Sat 10/31
8:50 am-12:48 pm
1 stop4h 58m
Rapid City
Sat 11/7
1:30 pm-7:23 pm
1 stop4h 53m
$399
St. LouisRapid City
STL Lambert-St Louis - RAP Rapid City
STLRAP
Lambert-St Louis
Sat 10/31
11:31 am-9:39 pm
2 stops11h 08m
Rapid City
Sat 11/7
1:09 pm-11:59 pm
2 stops9h 50m
$409
St. LouisRapid City
STL Lambert-St Louis - RAP Rapid City
STLRAP
Lambert-St Louis
Wed 12/23
6:30 am-11:19 am
1 stop5h 49m
Rapid City
Sun 12/27
4:37 pm-11:28 pm
1 stop5h 51m
$573
Showing 1-10 of 11 resultsSorted by cheapest first
Compare providers for flights from St. Louis to Rapid City
Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from St. Louis to Rapid City in October.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy2 stars | Trust Score*3 stars |
- Most accurate provider: When it comes to deals on St. Louis-Rapid City flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on St. Louis-Rapid City flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from St. Louis-Rapid City flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on St. Louis-Rapid City flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for St. Louis-Rapid City flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.
Best time to book a flight from St. Louis to Rapid City
Have a flexible travel schedule? Discover the best time to fly to Rapid City from St. Louis with our price prediction graph.
STL-RAP
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.
Reviews of airlines servicing Rapid City
Get insights into the airlines that provide service to Rapid City. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Rapid City. Reviews last updated October 27, 2026.
Read through reviews of airlines operating flights from St. Louis to Rapid City, such as Delta,United Airlines, andAmerican Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Food
7.2
Overall
7.8
Crew
8.5
Entertainment
7.8
Boarding
8.1
Comfort
7.8
Reviews
1 / 20
6.0
GoodEllen,Oct 2026
GRR - ATL
Food
7.2
Overall
7.8
Crew
8.5
Entertainment
7.8
Boarding
8.1
Comfort
7.8
Reviews
1 / 20
6.0
GoodEllen,Oct 2026
GRR - ATL
Food
7.2
Overall
7.8
Crew
8.5
Entertainment
7.8
Boarding
8.1
Comfort
7.8
Reviews
1 / 20
6.0
GoodEllen,Oct 2026
GRR - ATL
Food
7.2
Overall
7.8
Crew
8.5
Entertainment
7.8
Boarding
8.1
Comfort
7.8
Reviews
1 / 20
6.0
GoodEllen,Oct 2026
GRR - ATL
Related info for your journey
Find useful and relevant information for your journey from St. Louis to Rapid City. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
Traveling to a place near Rapid City?
Book flights to Rapid City if you plan to visit one of these locationsDeadwood
Keystone
Spearfish
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St. Louis and Rapid City flights
Browse other St. Louis and Rapid City flight options. Last updated on October 27, 2026.
Other flights from St. Louis
Browse through other flights departing from St. Louis. Flights are based on user searches made on Cheapflights and were last updated on October 27, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Other flights to Rapid City
Explore flights to Rapid City departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on October 27, 2026.
Top 3 airlines flying from St. Louis to Rapid City
Discover the top 3 airlines that operate flights from St. Louis to Rapid City. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 7,457,451 searches. Data last updated October 27, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$268 | Average$384 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$268 | Average$388 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$286 | Average$358 | FlexibilityNo cancel fee | On-timeN/A |