$228 Cheap Flights from Rapid City (RAP) to Helena (HLN)

View $228 flight on Wed, Jan 14, 2026Opens in a new window

Popular airlines from Rapid City Regional Airport (RAP) to Helena, MT (HLN-Helena Regional)

Cheap Flights from Rapid City to Helena (RAP-HLN)

Prices were available within the past 7 days and start at $228 for one-way flights and $229 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

United
Wed, Jan 14 - Mon, Jan 19
RAP
Rapid City
HLN
Helena
$229 Roundtrip, found 16 hours ago
$229
Roundtrip
found 16 hours ago
Select United flight, departing Wed, Jan 14 from Rapid City to Helena, returning Mon, Jan 19, priced at $229 found 16 hours ago
United
Wed, Jan 14 - Mon, Jan 19
RAP
Rapid City
HLN
Helena
$251 Roundtrip, found 16 hours ago
$251
Roundtrip
found 16 hours ago
Select United flight, departing Wed, Jan 14 from Rapid City to Helena, returning Mon, Jan 19, priced at $251 found 16 hours ago
United
Tue, Jan 6 - Tue, Jan 20
RAP
Rapid City
HLN
Helena
$289 Roundtrip, found 12 hours ago
$289
Roundtrip
found 12 hours ago
Select United flight, departing Tue, Jan 6 from Rapid City to Helena, returning Tue, Jan 20, priced at $289 found 12 hours ago
United
Thu, Nov 6 - Sun, Nov 9
RAP
Rapid City
HLN
Helena
$299 Roundtrip, found 5 days ago
$299
Roundtrip
found 5 days ago
Select United flight, departing Thu, Nov 6 from Rapid City to Helena, returning Sun, Nov 9, priced at $299 found 5 days ago
United
Sun, Nov 16 - Sun, Nov 23
RAP
Rapid City
HLN
Helena
$304 Roundtrip, found 16 hours ago
$304
Roundtrip
found 16 hours ago
Select United flight, departing Sun, Nov 16 from Rapid City to Helena, returning Sun, Nov 23, priced at $304 found 16 hours ago
United
Sat, Nov 22 - Sat, Nov 29
RAP
Rapid City
HLN
Helena
$308 Roundtrip, found 14 hours ago
$308
Roundtrip
found 14 hours ago
Select United flight, departing Sat, Nov 22 from Rapid City to Helena, returning Sat, Nov 29, priced at $308 found 14 hours ago
United
Wed, Jan 14 - Mon, Jan 19
RAP
Rapid City
HLN
Helena
$311 Roundtrip, found 16 hours ago
$311
Roundtrip
found 16 hours ago
Select United flight, departing Wed, Jan 14 from Rapid City to Helena, returning Mon, Jan 19, priced at $311 found 16 hours ago
United
Sun, Nov 16 - Sun, Nov 23
RAP
Rapid City
HLN
Helena
$313 Roundtrip, found 16 hours ago
$313
Roundtrip
found 16 hours ago
Select United flight, departing Sun, Nov 16 from Rapid City to Helena, returning Sun, Nov 23, priced at $313 found 16 hours ago
United
Sat, Nov 22 - Sat, Nov 29
RAP
Rapid City
HLN
Helena
$315 Roundtrip, found 14 hours ago
$315
Roundtrip
found 14 hours ago
Select United flight, departing Sat, Nov 22 from Rapid City to Helena, returning Sat, Nov 29, priced at $315 found 14 hours ago
Delta
Wed, Jan 14 - Mon, Jan 19
RAP
Rapid City
HLN
Helena
$1,755 Roundtrip, found 16 hours ago
$1,755
Roundtrip
found 16 hours ago
Select Delta flight, departing Wed, Jan 14 from Rapid City to Helena, returning Mon, Jan 19, priced at $1,755 found 16 hours ago

Frequently asked questions

How much does a flight from Rapid City Regional Airport (RAP) to Helena Regional Airport (HLN) cost?
Secure a cheap one-way flight from $228 or cheap return flight from $229 from Rapid City Regional Airport (RAP) to Helena Regional Airport (HLN) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to see our cheapest flight deals on this route.
What is the cheapest month to fly from Rapid City Regional Airport (RAP) to Helena Regional Airport (HLN)?
January is the least expensive month to fly from RAP to HLN. Traveling during an off-peak travel window is often the key to better flight prices.
What is the cheapest airline that flies from Rapid City Regional Airport (RAP) to Helena Regional Airport (HLN)?
To find the cheapest airline that'll fly you from RAP to HLN, use Expedia's filter tool. Customize your search based on your travel needs, such as preferred carriers and seat class. You can then sort your results by "Price (lowest to highest)" to see the most affordable options first.
How many flights per day from Rapid City Regional Airport (RAP) to Helena Regional Airport (HLN)?
Direct flights from Rapid City Regional Airport (RAP) to Helena Regional Airport (HLN) aren't available daily, so you'll have to take a flight with a layover. Explore your options with Expedia's filter tool. Enter your travel details and click on either "1 Stop" or "2+ Stops."
What day of the week has the most flights from RAP to HLN?
Typically you'll have the most choice when it comes to flights on a Friday. Tuesdays tend to be the quietest.* But this can vary depending on the season, airline and other factors.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Rapid City Regional Airport (RAP) to Helena Regional Airport (HLN)?
To touch down at Helena Regional Airport (HLN) without delays, choose a flight that leaves Rapid City Regional Airport (RAP) before 3 PM. The likelihood of cancellations is 22% higher, on average, for departures after this hour.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
Is it cheaper to buy a plane ticket from Rapid City Regional Airport (RAP) to Helena Regional Airport (HLN) last-minute?
Holding off until just before your trip to book a ticket from RAP to HLN generally means paying more. While you may find some last-minute offers, they aren't always guaranteed. Be flexible with your itinerary for the best chance of snagging a bargain.
Is it cheaper to book a RAP to HLN flight and hotel package?
Securing a RAP to HLN flight and hotel package is typically cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your travels all in one place. Choose from our wide range of hotels and then add flights, car rentals and activities to your booking. Bundle it all together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Rapid City Regional Airport (RAP) to Helena Regional Airport (HLN)?
In most instances, you can reschedule or cancel your RAP to HLN flight. However, there may be additional charges, especially if you made your booking more than 24 hours ago. Double-check your itinerary for the airline's fees and guidelines on flight changes, or if you need further information, visit our Customer Service portal.

Travel information

Origin airport
Rapid City Regional
Destination airport
Helena Regional
Airlines serving
Delta, United
Roundtrip price
$228
Distance
468 mi

Book with confidence

Rapid City to Helena Flights

The cheapest times to fly from Rapid City to Helena

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Rapid City to Helena are during the month of January. You can find some of the cheapest flights from Rapid City to Helena with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Rapid City to Helena

Sunday is one of the best days to book for cheap flights from Rapid City to Helena: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Rapid City to Helena

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Rapid City to Helena in 2025. You can also book with separate airlines for your outbound and return journeys, from $228 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Rapid City to Helena flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Rapid City to Helena airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Rapid City to Helena Flights

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*Available to One Key members.