Which airports can I use when flying from Santa Rosa to Helena?

Flights from Santa Rosa to Helena usually depart from Santa Rosa Sonoma County (STS) and arrive at Helena (HLN).

Do I need a passport to fly from Santa Rosa to Helena?

No, a passport is not required for this domestic route, but you will need a real ID-compliant driver's license, a state ID, or another TSA-accepted form of identification.

Have flight prices from Santa Rosa to Helena changed much recently?

Yes. Based on fares seen in the past 5 days, round-trip prices on this route showed a wide range, from about $465 to $1,082. That means the highest observed fare was about 2x higher than the lowest one.

How are flight prices from Santa Rosa to Helena looking right now?

One-way fares from Santa Rosa to Helena are currently lower than usual. Average one-way flight prices are about $323, which is 35% below the typical average for this route.

What is the time difference between Santa Rosa and Helena?

Helena is 1 hour ahead of Santa Rosa (Mountain Time vs Pacific Time). Plan for the time shift when scheduling connections or first-day activities.

What car rental options are available at Helena Airport (HLN)?

Helena Airport (HLN) hosts 5 major car rental companies, with daily rates starting from around $25 for economy cars. Top options include: • Budget • Enterprise Rent-A-Car • Hertz • Avis • National

$243 CHEAP FLIGHTS from Santa Rosa to Helena (STS - HLN)

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Cheapest one-way

$243

Typical prices: $490-$490

Delta

Sat 10/27

STS - HLN • 1 stop

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Flight Deals

Cheap Flights from Santa Rosa to Helena (STS-HLN)

Discover the best prices for you by selecting your travel dates on KAYAK.

Round-trip

One-way

Recent round-trip flight deals from Santa Rosa to Helena

Wed, Dec 9 - Sat, Dec 12

3:18 pm - 3:31 pmSTS Santa Rosa Sonoma County-HLN Helena

23h 13m2 stops San Diego Seattle/Tacoma Intl

4:08 pm - 10:33 amHLN Helena-STS Santa Rosa Sonoma County

43h 25m2 stops Seattle/Tacoma Intl San Diego

$465Alaska Airlines

Fri, Oct 23 - Mon, Oct 26

4:49 pm - 10:24 pmSTS Santa Rosa Sonoma County-HLN Helena

4h 35m1 stop Salt Lake City

7:15 am - 10:41 amHLN Helena-STS Santa Rosa Sonoma County

4h 26m1 stop Salt Lake City

$545Delta

Wed, Dec 9 - Sat, Dec 12

6:40 am - 3:31 pmSTS Santa Rosa Sonoma County-HLN Helena

7h 51m1 stop Seattle/Tacoma Intl

4:08 pm - 8:28 pmHLN Helena-STS Santa Rosa Sonoma County

5h 20m1 stop Seattle/Tacoma Intl

$553Alaska Airlines

Wed, Dec 9 - Sat, Dec 12

6:40 am - 4:18 pmSTS Santa Rosa Sonoma County-HLN Helena

8h 38m1 stop Seattle/Tacoma Intl

4:55 pm - 3:05 pmHLN Helena-STS Santa Rosa Sonoma County

47h 10m2 stops Seattle/Tacoma Intl San Diego

$586Alaska Airlines

Wed, Dec 9 - Sat, Dec 12

6:28 am - 4:18 pmSTS Santa Rosa Sonoma County-HLN Helena

32h 50m2 stops San Diego Seattle/Tacoma Intl

4:55 pm - 10:15 amHLN Helena-STS Santa Rosa Sonoma County

42h 20m2 stops Seattle/Tacoma Intl San Diego

$589Alaska Airlines

Wed, Dec 9 - Sat, Dec 12

6:40 am - 4:18 pmSTS Santa Rosa Sonoma County-HLN Helena

8h 38m1 stop Seattle/Tacoma Intl

4:55 pm - 5:49 pmHLN Helena-STS Santa Rosa Sonoma County

25h 54m1 stop Seattle/Tacoma Intl

$593Alaska Airlines

Wed, Dec 9 - Sat, Dec 12

6:28 am - 4:18 pmSTS Santa Rosa Sonoma County-HLN Helena

32h 50m2 stops San Diego Seattle/Tacoma Intl

4:55 pm - 5:49 pmHLN Helena-STS Santa Rosa Sonoma County

25h 54m1 stop Seattle/Tacoma Intl

$596Alaska Airlines

Wed, Dec 9 - Sat, Dec 12

8:00 am - 3:31 pmSTS Santa Rosa Sonoma County-HLN Helena

6h 31m2 stops Portland Seattle/Tacoma Intl

4:08 pm - 8:28 pmHLN Helena-STS Santa Rosa Sonoma County

5h 20m1 stop Seattle/Tacoma Intl

$601Alaska Airlines

Wed, Dec 9 - Sat, Dec 12

6:28 am - 4:18 pmSTS Santa Rosa Sonoma County-HLN Helena

32h 50m2 stops San Diego Seattle/Tacoma Intl

4:55 pm - 11:44 amHLN Helena-STS Santa Rosa Sonoma County

19h 49m2 stops Seattle/Tacoma Intl Los Angeles

$629Alaska Airlines

Fri, Nov 20 - Tue, Nov 24

4:47 pm - 10:26 pmSTS Santa Rosa Sonoma County-HLN Helena

4h 39m1 stop Salt Lake City

7:00 am - 10:43 amHLN Helena-STS Santa Rosa Sonoma County

4h 43m1 stop Salt Lake City

$695Delta

Booking Insights

Price, demand and travel trends for Santa Rosa to Helena flights

Use KAYAK data on prices, travel dates, airlines and seasonal trends to compare options and book flights from Santa Rosa to Helena with more confidence.

What is the cheapest airline to fly from Santa Rosa to Helena?

Alaska Airlines ($465) and Delta ($545) are the cheapest airlines to fly round-trip from Santa Rosa to Helena according to KAYAK data over the last 5 days.

Find deals

Cheapest flight	$243

Flight from Santa Rosa to Helena

When to book flights from Santa Rosa to Helena

Are your dates flexible? Find out the best times to travel from Santa Rosa to Helena based on our flight data from the last year. Discover the cheapest month and even day to fly.

Estimated round-trip price

KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

Which airports can I use when flying from Santa Rosa to Helena?
Flights from Santa Rosa to Helena usually depart from Santa Rosa Sonoma County (STS) and arrive at Helena (HLN).
Do I need a passport to fly from Santa Rosa to Helena?
No, a passport is not required for this domestic route, but you will need a real ID-compliant driver's license, a state ID, or another TSA-accepted form of identification.
Have flight prices from Santa Rosa to Helena changed much recently?
Yes. Based on fares seen in the past 5 days, round-trip prices on this route showed a wide range, from about $465 to $1,082. That means the highest observed fare was about 2x higher than the lowest one.
How are flight prices from Santa Rosa to Helena looking right now?
One-way fares from Santa Rosa to Helena are currently lower than usual. Average one-way flight prices are about $323, which is 35% below the typical average for this route.
What is the time difference between Santa Rosa and Helena?
Helena is 1 hour ahead of Santa Rosa (Mountain Time vs Pacific Time). Plan for the time shift when scheduling connections or first-day activities.
What car rental options are available at Helena Airport (HLN)?
Helena Airport (HLN) hosts 5 major car rental companies, with daily rates starting from around $25 for economy cars. Top options include:
• Budget
• Enterprise Rent-A-Car
• Hertz
• Avis
• National

If you're arriving late at night and need somewhere to stay, check out these hotels close to Helena Airport.
- Days Inn by Wyndham Helena
- Americas Best Value Inn & Suites Helena
- Baymont by Wyndham Helena

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STS - HLN

$243 Find Cheap Flights from Santa Rosa to Helena - Compare and Save

Everything you should know

Cheap Flights from Santa Rosa to Helena (STS-HLN)

Recent round-trip flight deals from Santa Rosa to Helena

Recent one-way flight deals from Santa Rosa to Helena

Price, demand and travel trends for Santa Rosa to Helena flights

What is the cheapest airline to fly from Santa Rosa to Helena?

Key details for Santa Rosa to Helena flights

Cheapest flight

When to book flights from Santa Rosa to Helena

Your Santa Rosa to Helena flight questions, answered

Your guide to booking Santa Rosa to Helena flights

More options for your flight from Santa Rosa to Helena

Complete your trip to Helena with a hotel stay or car rental

Information on your arrival and departure airports

Cabin class types available on flights from Santa Rosa to Helena

Find direct flights to and from Santa Rosa and Helena

Flights from domestic origins to Helena

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