$422+ Cheap flights from Helena to Rapid City (HLN - 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 9/24. Fares are subject to change and may not be available on all flights or dates of travel.
HLN — RAP
Oct 13 — Oct 201
Round-trip
1 adult, Economy
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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 Helena to Rapid City
Cheapest
Best
Last-minute
Cheapest flights from Helena to Rapid CityExplore the most affordable flight options available from Helena to Rapid City. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 13, 2026.
Explore the most affordable flight options available from Helena to Rapid City. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 13, 2026.
This United Airlines deal was found by Cheapflights users on 9/9. 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 9/242:30 pm -
1 stop6h 22m
Mon 9/287:05 am -
1 stop6h 43m
Deal found 9/9![United Airlines logo]()
$422
This United Airlines deal was found by Cheapflights users on 9/8. 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 11/22:23 pm -
1 stop4h 56m
Wed 11/47:00 am -
1 stop6h 40m
Deal found 9/8![United Airlines logo]()
$547
This United Airlines deal was found by Cheapflights users on 9/8. 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 9/176:15 am -
1 stop6h 09m
Sun 9/204:41 pm -
1 stop4h 49m
Deal found 9/8![United Airlines logo]()
$579
This Delta deal was found by Cheapflights users on 9/8. 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.
Thu 9/1712:57 pm -
2 stops9h 21m
Sun 9/202:30 pm -
2 stops7h 54m
Deal found 9/8![Delta logo]()
$1,811
Best flights from Helena to Rapid CityDiscover carefully curated flight deals from Helena to Rapid City that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 13, 2026.
Discover carefully curated flight deals from Helena to Rapid City that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 13, 2026.
This United Airlines deal was found by Cheapflights users on 9/9. 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 9/242:30 pm -
1 stop6h 22m
Mon 9/287:05 am -
1 stop6h 43m
Deal found 9/9![United Airlines logo]()
$422
This United Airlines deal was found by Cheapflights users on 9/8. 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 11/22:23 pm -
1 stop4h 56m
Wed 11/47:00 am -
1 stop6h 40m
Deal found 9/8![United Airlines logo]()
$547
Last-minute flights from Helena to Rapid CityDiscover last-minute flight deals from Helena to Rapid City. Data last updated September 13, 2026 and is based on user searches.
Discover last-minute flight deals from Helena to Rapid City. Data last updated September 13, 2026 and is based on user searches.
This United Airlines deal was found by Cheapflights users on 9/8. 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 9/176:15 am -
1 stop6h 09m
Sun 9/204:41 pm -
1 stop4h 49m
Deal found 9/8![United Airlines logo]()
$579
This Delta deal was found by Cheapflights users on 9/8. 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.
Thu 9/1712:57 pm -
2 stops9h 21m
Sun 9/202:30 pm -
2 stops7h 54m
Deal found 9/8![Delta logo]()
$1,811
This United Airlines deal was found by Cheapflights users on 9/9. 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 9/242:30 pm -
1 stop6h 22m
Mon 9/287:05 am -
1 stop6h 43m
Deal found 9/9![United Airlines logo]()
$422
Find flight deals from Helena to Rapid City
Discover tips and strategies to find the most affordable flight options for your journey from Helena (HLN) 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 September 13, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $422 (United Airlines) |
Cheapflights Fare Finder
Customize your flight search to find flights from Helena 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 September 13, 2026.
Use the filters below to find and compare flights from Helena to Rapid City that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
HelenaRapid City
HLN Helena - RAP Rapid City
HLNRAP
Helena
Thu 9/24
2:30 pm-8:52 pm
1 stop6h 22m
Rapid City
Mon 9/28
7:05 am-1:48 pm
1 stop6h 43m
$422
Quickest round-trip
HelenaRapid City
HLN Helena - RAP Rapid City
HLNRAP
Helena
Mon 11/2
2:23 pm-7:19 pm
1 stop4h 56m
Rapid City
Wed 11/4
7:00 am-1:40 pm
1 stop6h 40m
$547
Sorted by cheapest first
- Most accurate provider: When it comes to deals on Helena-Rapid City flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Helena-Rapid City flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Helena-Rapid City flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on Helena-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 Helena-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 Helena to Rapid City
Have a flexible travel schedule? Discover the best time to fly to Rapid City from Helena with our price prediction graph.
HLN-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.
Related info for your journey
Find useful and relevant information for your journey from Helena 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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