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Helena

$559+ Cheap flights from Santa Rosa to Helena (STS - HLN)

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 5/16. Fares are subject to change and may not be available on all flights or dates of travel.
STS — HLN
may. 4 — may. 111
dom. 5/4
dom. 5/11
1 adult, Economy
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Cheap flight deals from Santa Rosa to Helena

Discover tips and strategies to find the most affordable flight options for your journey from Santa Rosa (STS) to Helena (HLN). 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 abril 29, 2025.

Most accurate provider

Expedia
1 star

Most trusted provider

Expedia
3 stars

Round-trip from

$559
(Alaska Airlines)

Popular in

March

Cheapest in

October

Average price

$498
Provider with most accurate pricing for Santa Rosa Sonoma County-Helena flight deals.
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Provider most trusted by Cheapflights users for Santa Rosa Sonoma County-Helena flights.
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From Santa Rosa Sonoma County to Helena
Search Deals
Highest demand for flights based on searches. 28% potential increase in price ($225 potential increase over avg. RT price).
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Cheapest flight prices on average. 10% potential price decrease ($53 potential savings vs. average RT price).
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Average for round-trip flights in April 2025
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Find flight deals from Santa Rosa to Helena

Cheapest flights from Santa Rosa to Helena
Explore the most affordable flight options available from Santa Rosa to Helena. Find the lowest fares from popular airlines and budget airlines, with prices last updated on abril 29, 2025.

This Alaska Airlines deal was found by Cheapflights users on 4/27. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 5/168:01 pmSTS - HLN
1 stop18h 30mAlaska Airlines
dom. 5/184:11 pmHLN - STS
2 stops32h 19mAlaska Airlines
Deal found 4/27$559

Cheapflights Fare Finder

Customize your flight search to find flights from Santa Rosa to Helena 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 2,558,603 searches. Data last updated abril 29, 2025.
Use the filters below to find and compare flights from Santa Rosa to Helena that are best for you.

Fly from

Santa Rosa

Fly to

Helena

Route

Depart

Return

Price

Santa RosaHelena

STS - HLN

STSHLN

Santa Rosa Sonoma County

vie. 5/16

8:01 pm-3:31 pm

1 stop18h 30m

Helena

dom. 5/18

4:11 pm-11:30 pm

2 stops32h 19m

$559

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/27

  • Most accurate provider: When it comes to deals on Santa Rosa-Helena flights, users find the pricing of Expedia to be most consistent on Cheapflights vs. Expedia Users can find the same prices on Santa Rosa-Helena flight deals on Cheapflights vs. Expedia <90% of the time. Price accuracy is based on data collected from Santa Rosa-Helena flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Santa Rosa-Helena flights, Cheapflights users trust Expedia the most. Expedia 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 Santa Rosa-Helena 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 Santa Rosa to Helena

Have a flexible travel schedule? Discover the best time to fly to Helena from Santa Rosa with our price prediction graph.
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.

Cheapflights Insights

Everything you need to know about your flight from Santa Rosa to Helena

What is the cheapest month to book a flight from Santa Rosa to Helena?

Currently, February is the cheapest month in which you can book a flight from Santa Rosa to Helena (average of $353). Flying from Santa Rosa to Helena in July is currently the most expensive (average of $597). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from STS to HLN?

Find hourly flight availability from Santa Rosa to Helena. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated abril 29, 2025.

When flying from Santa Rosa to Helena, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Rainfall in Helena by month

Plan your trip to Helena by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Helena ranges from 0.3 - 2.1 inches per month. June is typically the wettest month, when rainfall can reach 2.1 in. February is typically the driest time to visit Helena when rainfall is around 0.3 in.

Temperature in Helena by month

Plan your trip to Helena by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Helena, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 69.8 F. Travelers looking to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 21.2 F).

Reviews of airlines servicing Helena

Get insights into the airlines that provide service to Helena. 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 Helena. Reviews last updated abril 29, 2025.
Alaska Airlines
8.0
Very good
9,949 reviews

Boarding

8.2

Comfort

7.9

Crew

8.5

Entertainment

7.1

Food

7.1

Overall

8.0

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Alaska Airlines
8.0
Very good
9,949 reviews
Alaska Airlines
8.0
Very good
9,949 reviews

Boarding

8.2

Comfort

7.9

Crew

8.5

Entertainment

7.1

Food

7.1

Overall

8.0

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.

Related info for your journey

Find useful and relevant information for your journey from Santa Rosa to Helena. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • Can I find deals for flights from Santa Rosa to Helena that include hotel bookings?

    Yes. In addition to deals on Santa Rosa to Helena flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Santa Rosa to Helena?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Santa Rosa to Helena.

  • Can I find deals for business class flights from Santa Rosa to Helena?

    Yes. Cheapflights offers flight deals from Santa Rosa to Helena by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Santa Rosa to Helena?

    Currently, February is the cheapest month in which you can book a flight from Santa Rosa to Helena (average of $353). Flying from Santa Rosa to Helena in July is currently the most expensive (average of $597). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

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