What is the cheapest airline that flies from Helena to California?

United Airlines, Delta, and Alaska Airlines are the most popular carriers operating from Helena to California

What airlines fly to California?

Delta, United Airlines and Alaska Airlines are the top three most popular airlines that fly to California from Helena according to our data. Delta is the first choice among our users, with 35% of people opting to fly with this airline when traveling to California. Keep in mind that there are 7 different airlines that fly to California on a routine basis, so you have a few additional options to choose from.

When did momondo last update prices for flights from Helena Airport to California?

Prices for flights from Helena Airport to California refresh daily.

How many operators does momondo search for flights from Helena Airport to California?

As of June 2026, there are 2 operators available to choose from for flights from Helena Airport to California.

How old do you have to be to fly from Helena Airport to California?

Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Helena Airport to California.

What documentation or ID do you need to fly to California?

The necessary travel and health documents for your California 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.

$181 Cheap Flights from Helena to California in 2026

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Helena to California

Round-trip

One-way

Last minute

Cheap round-trip flights

Enter your travel dates to find the best prices.

7:15 am - 12:22 pm

HLN

ONT

6h 07m

1 stop

5:05 pm - 10:41 pm

ONT

HLN

4h 36m

1 stop

$319Delta

Thu, Nov 5 - Mon, Nov 9

1:03 pm - 10:43 pm

HLN

ONT

10h 40m

2 stops

6:00 am - 12:24 pm

ONT

HLN

5h 24m

1 stop

$324Delta

Thu, Nov 5 - Mon, Nov 9

5:18 pm - 10:46 am

HLN

SAN

18h 28m

1 stop

7:15 am - 4:41 pm

SAN

HLN

8h 26m

1 stop

$333Alaska Airlines

Tue, Sep 22 - Sat, Sep 26

7:15 am - 12:22 pm

HLN

ONT

6h 07m

1 stop

5:05 pm - 10:41 pm

ONT

HLN

4h 36m

1 stop

$338Delta

Thu, Nov 5 - Mon, Nov 9

5:11 pm - 2:44 pm

HLN

SAN

22h 33m

1 stop

8:45 pm - 4:34 pm

SAN

HLN

18h 49m

1 stop

$343Alaska Airlines

Tue, Sep 1 - Sat, Sep 5

5:18 pm - 9:19 am

HLN

SMF

17h 01m

1 stop

6:00 am - 4:11 pm

SMF

HLN

9h 11m

1 stop

$350Alaska Airlines

Wed, Sep 30 - Tue, Oct 6

4:48 pm - 11:50 pm

HLN

SMF

8h 02m

1 stop

6:00 am - 4:11 pm

SMF

HLN

9h 11m

1 stop

$352Alaska Airlines

Thu, Oct 15 - Wed, Oct 21

4:48 pm - 11:50 pm

HLN

SMF

8h 02m

1 stop

7:09 pm - 4:11 pm

SMF

HLN

20h 02m

1 stop

$360Alaska Airlines

Thu, Oct 15 - Tue, Oct 20

4:41 pm - 9:35 pm

HLN

SFO

5h 54m

1 stop

8:30 am - 4:04 pm

SFO

HLN

6h 34m

1 stop

$361Alaska Airlines

Tue, Nov 3 - Wed, Nov 4

5:11 pm - 2:44 pm

HLN

SAN

22h 33m

1 stop

8:45 pm - 4:34 pm

SAN

HLN

18h 49m

1 stop

$363Alaska Airlines

Tue, Sep 1 - Sat, Sep 5

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Alaska Airlines flights from Helena to California

Our best Alaska Airlines deals on Helena to California flight tickets

Alaska Airlines

Sep 22

HLN5:18 pmHelena

18h 28m

1 stop

SAN10:46 amSan Diego

Sep 26

SAN7:15 amSan Diego

8h 26m

1 stop

HLN4:41 pmHelena

$333

Alaska Airlines

Sep 1

HLN5:11 pmHelena

22h 33m

1 stop

SAN2:44 pmSan Diego

Sep 5

SAN8:45 pmSan Diego

18h 49m

1 stop

HLN4:34 pmHelena

$343

Alaska Airlines

Sep 30

HLN5:18 pmHelena

17h 01m

1 stop

SMF9:19 amSacramento Intl

Oct 6

SMF6:00 amSacramento Intl

9h 11m

1 stop

HLN4:11 pmHelena

$350

Delta flights from Helena to California

Our best Delta deals on Helena to California flight tickets

Delta

Nov 5

HLN7:15 amHelena

6h 07m

1 stop

ONT12:22 pmOntario

Nov 9

ONT5:05 pmOntario

4h 36m

1 stop

HLN10:41 pmHelena

$319

Delta

Nov 5

HLN1:03 pmHelena

10h 40m

2 stops

ONT10:43 pmOntario

Nov 9

ONT6:00 amOntario

5h 24m

1 stop

HLN12:24 pmHelena

$324

Delta

Nov 5

HLN7:15 amHelena

6h 07m

1 stop

ONT12:22 pmOntario

Nov 9

ONT5:05 pmOntario

4h 36m

1 stop

HLN10:41 pmHelena

$338

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Quickest round-trip

HelenaOntario

HLN - ONT

HLNONT

Helena

Thu 11/5

7:15 am-12:22 pm

1 stop6h 07m

Ontario

Mon 11/9

5:05 pm-10:41 pm

1 stop4h 36m

$319

HelenaOntario

HLN - ONT

HLNONT

Helena

Thu 11/5

1:03 pm-10:43 pm

2 stops10h 40m

Ontario

Mon 11/9

6:00 am-12:24 pm

1 stop5h 24m

$324

HelenaSan Diego

HLN - SAN

HLNSAN

Helena

Tue 9/22

5:18 pm-10:46 am

1 stop18h 28m

San Diego

Sat 9/26

7:15 am-4:41 pm

1 stop8h 26m

$333

HelenaOntario

HLN - ONT

HLNONT

Helena

Thu 11/5

7:15 am-12:22 pm

1 stop6h 07m

Ontario

Mon 11/9

5:05 pm-10:41 pm

1 stop4h 36m

$338

HelenaSan Diego

HLN - SAN

HLNSAN

Helena

Tue 9/1

5:11 pm-2:44 pm

1 stop22h 33m

San Diego

Sat 9/5

8:45 pm-4:34 pm

1 stop18h 49m

$343

HelenaSacramento

HLN - SMF

HLNSMF

Helena

Wed 9/30

5:18 pm-9:19 am

1 stop17h 01m

Sacramento Intl

Tue 10/6

6:00 am-4:11 pm

1 stop9h 11m

$350

HelenaSacramento

HLN - SMF

HLNSMF

Helena

Thu 10/15

4:48 pm-11:50 pm

1 stop8h 02m

Sacramento Intl

Wed 10/21

6:00 am-4:11 pm

1 stop9h 11m

$352

HelenaSacramento

HLN - SMF

HLNSMF

Helena

Thu 10/15

4:48 pm-11:50 pm

1 stop8h 02m

Sacramento Intl

Tue 10/20

7:09 pm-4:11 pm

1 stop20h 02m

$360

HelenaSan Francisco

HLN - SFO

HLNSFO

Helena

Tue 11/3

4:41 pm-9:35 pm

1 stop5h 54m

San Francisco

Wed 11/4

8:30 am-4:04 pm

1 stop6h 34m

$361

HelenaSan Diego

HLN - SAN

HLNSAN

Helena

Tue 9/1

5:11 pm-2:44 pm

1 stop22h 33m

San Diego

Sat 9/5

8:45 pm-4:34 pm

1 stop18h 49m

$363

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from Helena to California

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

Prices

Airlines

Can stopping save me money on Helena to California flights?

You could potentially save up to 58% on your flight if you consider stops on a Helena to California flight.

Cheap Helena to California flight deals and tips

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

Fastest flight time	3h 43m
Direct flights	None

The fastest flight from Helena to California takes 3h 43m

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

Search flight deals

Frequently asked questions about flying from Helena to California

When did momondo last update prices for flights from Helena Airport to California?
Prices for flights from Helena Airport to California refresh daily.
How many operators does momondo search for flights from Helena Airport to California?
As of June 2026, there are 2 operators available to choose from for flights from Helena Airport to California.
How old do you have to be to fly from Helena Airport to California?
Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Helena Airport to California.
What documentation or ID do you need to fly to California?
The necessary travel and health documents for your California 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.

Best airlines flying from Helena to California

Compare and see reviews for airlines that fly from Helena to California with momondo

Airline	Rating	Free Cancellation	Price
Delta	PriceFrom $238	Free Cancellation	Rating 7.8 8,449 reviews		Search Delta flights

Why use momondo?

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

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Helena to California. momondo saves you time and could save you money on your trip.

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

Yes. momondo enables you to select and highlight flights to California from Helena with this policy.

How can momondo help me find flights from Helena to California?

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to California from Helena.

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

Yes. momondo can track prices for Helena to California flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.