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Helena

$333+ 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 12/19. Fares are subject to change and may not be available on all flights or dates of travel.
STS — HLN
Nov 22 — Nov 291
Sat 11/22
Sat 11/29
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 October 23, 2025.

Most accurate provider

Expedia
2 stars

Most trusted provider

Expedia
3 stars

Round-trip from

$333
(Alaska Airlines)

Popular in

March

Cheapest in

October

Average price

$292
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
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Highest demand for flights based on searches. 30% potential increase in price ($240 potential increase over avg. RT price).
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Cheapest flight prices on average. 10% potential price decrease ($54 potential savings vs. average RT price).
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Average for round-trip flights in October 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 October 23, 2025.

This Alaska 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/192:24 pmSTS - HLN
1 stop26h 31mAlaska Airlines
Wed 12/316:32 pmHLN - STS
1 stop4h 45mAlaska Airlines
Deal found 10/22$333
This Alaska 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/192:24 pmSTS - HLN
1 stop26h 31mAlaska Airlines
Sun 1/46:32 pmHLN - STS
1 stop4h 45mAlaska Airlines
Deal found 10/22$343
This Alaska Airlines deal was found by Cheapflights users on 10/23. 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.
Sat 12/202:24 pmSTS - HLN
1 stop26h 31mAlaska Airlines
Tue 1/66:32 pmHLN - STS
1 stop17h 03mAlaska Airlines
Deal found 10/23$353
This Alaska 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/202:24 pmSTS - HLN
1 stop26h 31mAlaska Airlines
Mon 1/56:32 pmHLN - STS
1 stop4h 45mAlaska Airlines
Deal found 10/22$363
This Alaska Airlines deal was found by Cheapflights users on 10/23. 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.
Wed 12/242:24 pmSTS - HLN
1 stop26h 31mAlaska Airlines
Mon 1/56:32 pmHLN - STS
1 stop20h 00mAlaska Airlines
Deal found 10/23$373
This Alaska 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/192:24 pmSTS - HLN
1 stop26h 31mAlaska Airlines
Mon 1/56:32 pmHLN - STS
2 stops15h 52mAlaska Airlines
Deal found 10/22$391
This Alaska Airlines deal was found by Cheapflights users on 10/23. 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.
Fri 12/192:24 pmSTS - HLN
1 stop26h 31mAlaska Airlines
Tue 1/66:32 pmHLN - STS
2 stops39h 26mAlaska Airlines
Deal found 10/23$401
This Alaska Airlines deal was found by Cheapflights users on 10/23. 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.
Thu 12/257:00 amSTS - HLN
2 stops9h 55mAlaska Airlines
Wed 12/316:32 pmHLN - STS
1 stop4h 45mAlaska Airlines
Deal found 10/23$411
This Alaska Airlines deal was found by Cheapflights users on 10/23. 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.
Wed 12/2412:03 pmSTS - HLN
2 stops28h 52mAlaska Airlines
Wed 12/316:32 pmHLN - STS
1 stop4h 45mAlaska Airlines
Deal found 10/23$421

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 October 23, 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

Fri 12/19

2:24 pm-5:55 pm

1 stop26h 31m

Helena

Sun 1/4

6:32 pm-10:17 pm

1 stop4h 45m

$343

Santa RosaHelena

STS - HLN

STSHLN

Santa Rosa Sonoma County

Wed 12/24

2:24 pm-5:55 pm

1 stop26h 31m

Helena

Tue 1/6

6:32 pm-10:35 am

1 stop17h 03m

$363

Santa RosaHelena

STS - HLN

STSHLN

Santa Rosa Sonoma County

Wed 12/24

2:24 pm-5:55 pm

1 stop26h 31m

Helena

Wed 12/31

6:32 pm-10:17 pm

1 stop4h 45m

$363

Santa RosaHelena

STS - HLN

STSHLN

Santa Rosa Sonoma County

Sat 12/20

2:24 pm-5:55 pm

1 stop26h 31m

Helena

Sun 1/4

6:32 pm-10:17 pm

1 stop4h 45m

$363

Santa RosaHelena

STS - HLN

STSHLN

Santa Rosa Sonoma County

Thu 12/25

6:00 am-5:55 pm

1 stop10h 55m

Helena

Wed 12/31

6:32 pm-10:17 pm

1 stop4h 45m

$363

Santa RosaHelena

STS - HLN

STSHLN

Santa Rosa Sonoma County

Thu 12/25

6:00 am-5:55 pm

1 stop10h 55m

Helena

Tue 1/6

6:32 pm-10:35 am

1 stop17h 03m

$363

Santa RosaHelena

STS - HLN

STSHLN

Santa Rosa Sonoma County

Sat 12/20

2:24 pm-5:55 pm

1 stop26h 31m

Helena

Mon 1/5

6:32 pm-10:17 pm

1 stop4h 45m

$363

Santa RosaHelena

STS - HLN

STSHLN

Santa Rosa Sonoma County

Thu 12/25

6:00 am-5:55 pm

1 stop10h 55m

Helena

Mon 1/5

6:32 pm-10:17 pm

1 stop4h 45m

$373

Santa RosaHelena

STS - HLN

STSHLN

Santa Rosa Sonoma County

Wed 12/24

2:24 pm-5:55 pm

1 stop26h 31m

Helena

Mon 1/5

6:32 pm-1:32 pm

1 stop20h 00m

$373

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/22

  • 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 90-95% 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, August is the cheapest month in which you can book a flight from Santa Rosa to Helena (average of $44). Flying from Santa Rosa to Helena in April is currently the most expensive (average of $223). 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.

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.

  • How long is the flight from Santa Rosa to Helena?

    Departing from Santa Rosa to Helena will take you 26h 31m. Santa Rosa and Helena are separated by a distance of 783 mi.

  • 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, August is the cheapest month in which you can book a flight from Santa Rosa to Helena (average of $44). Flying from Santa Rosa to Helena in April is currently the most expensive (average of $223). 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.

See more FAQs

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