When did momondo last update prices for flights from Santa Rosa Sonoma County Airport to Helena Airport?

Prices for flights from Santa Rosa Sonoma County Airport to Helena Airport are updated daily.

How old do you have to be to fly from Santa Rosa Sonoma County Airport to Helena Airport?

The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Santa Rosa Sonoma County Airport to Helena Airport.

What documentation or ID do you need to fly to Helena Airport?

The necessary travel and health documents for your Helena Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

$491 Cheap Flights from Santa Rosa to Helena in 2026

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0 bags

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Find the cheapest flights from Santa Rosa to Helena

Round-trip

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Cheap round-trip flights

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7:00 am - 5:45 pm

STS

HLN

33h 45m

2 stops

6:22 pm - 12:21 pm

HLN

STS

18h 59m

1 stop

$491Alaska Airlines

Sun, Apr 26 - Sun, May 3

7:46 pm - 5:45 pm

STS

HLN

20h 59m

1 stop

6:22 pm - 10:57 pm

HLN

STS

5h 35m

1 stop

$508Alaska Airlines

Sun, Apr 26 - Sun, May 3

7:00 am - 5:45 pm

STS

HLN

33h 45m

2 stops

6:22 pm - 2:20 pm

HLN

STS

44h 58m

2 stops

$524Alaska Airlines

Sun, Apr 26 - Sun, May 3

Alaska Airlines flights from Santa Rosa to Helena

Our best Alaska Airlines deals on Santa Rosa to Helena flight tickets

Alaska Airlines

Apr 26

STS7:00 amSanta Rosa Sonoma County

33h 45m

2 stops

HLN5:45 pmHelena

May 3

HLN6:22 pmHelena

18h 59m

1 stop

STS12:21 pmSanta Rosa Sonoma County

$491

Alaska Airlines

Apr 26

STS7:46 pmSanta Rosa Sonoma County

20h 59m

1 stop

HLN5:45 pmHelena

May 3

HLN6:22 pmHelena

5h 35m

1 stop

STS10:57 pmSanta Rosa Sonoma County

$508

Alaska Airlines

Apr 26

STS7:00 amSanta Rosa Sonoma County

33h 45m

2 stops

HLN5:45 pmHelena

May 3

HLN6:22 pmHelena

44h 58m

2 stops

STS2:20 pmSanta Rosa Sonoma County

$524

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Santa RosaHelena

STS - HLN

STSHLN

Santa Rosa Sonoma County

Sun 4/26

7:00 am-5:45 pm

2 stops33h 45m

Helena

Sun 5/3

6:22 pm-12:21 pm

1 stop18h 59m

$491

Quickest round-trip

Santa RosaHelena

STS - HLN

STSHLN

Santa Rosa Sonoma County

Sun 4/26

7:46 pm-5:45 pm

1 stop20h 59m

Helena

Sun 5/3

6:22 pm-10:57 pm

1 stop5h 35m

$508

Santa RosaHelena

STS - HLN

STSHLN

Santa Rosa Sonoma County

Sun 4/26

7:00 am-5:45 pm

2 stops33h 45m

Helena

Sun 5/3

6:22 pm-2:20 pm

2 stops44h 58m

$524

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

How to get the cheapest flight ticket from Santa Rosa to Helena

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What airlines fly to Helena?

United Airlines, Alaska Airlines and Delta are the top three most popular airlines that fly to Helena from Santa Rosa according to our data. United Airlines is the first choice among our users, with 42% of people opting to fly with this airline when traveling to Helena. Keep in mind that there are 7 different airlines that fly to Helena on a routine basis, so you have a few additional options to choose from.

When to book flights from Santa Rosa to Helena

Are you open to changing your travel dates? Check out the ideal times to fly from Santa Rosa to Helena according to our flight data. Find out which month and days have the cheapest flights.

Estimated round-trip price

Cheap Santa Rosa to Helena (STS to HLN) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Santa Rosa to Helena

Fastest flight time	33h 45m
Direct flights	None

The fastest flight from Santa Rosa to Helena takes 33h 45m

There are no direct flights from Santa Rosa to Helena. There are no popular flight routes from Santa Rosa to Helena.

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How far is Santa Rosa Sonoma County to Helena by plane?
Santa Rosa Sonoma County and Helena are 781.0 mi apart from one another. Flights usually cover this in 33h 45m, depending on flying conditions and air traffic around both airports.
When did momondo last update prices for flights from Santa Rosa Sonoma County Airport to Helena Airport?
Prices for flights from Santa Rosa Sonoma County Airport to Helena Airport are updated daily.
How old do you have to be to fly from Santa Rosa Sonoma County Airport to Helena Airport?
The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Santa Rosa Sonoma County Airport to Helena Airport.
What documentation or ID do you need to fly to Helena Airport?
The necessary travel and health documents for your Helena Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

Why use momondo?

Why should I use momondo to find a flight deal from Santa Rosa to Helena?

It is quick and easy to find Santa Rosa to Helena flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to Helena that suits you.

Can I find flights from Santa Rosa to Helena with flexible booking policies on momondo?

All flight searches from Santa Rosa to Helena on momondo can be filtered to show those which offer flexible booking policies.

How can momondo help me find flights from Santa Rosa to Helena?

momondo helps you find the best flight between Santa Rosa and Helena by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

I’m not ready to book a flight from Santa Rosa to Helena right now. Can momondo alert me if prices change?

Price alerts on flights to Helena from Santa Rosa are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.