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Cheap flights from California to Helena from $170

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from California to Helena departing on 11/16. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

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Find the cheapest flights from California to Helena

Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
9:00 am - 5:51 pmSFO-HLN
7h 51m1 stop
Multiple Airlines Logo
6:28 pm - 11:59 pmHLN-SFO
6h 31m1 stop
$247Multiple Airlines
Find Deal
Thu, Dec 4 - Thu, Dec 11
Alaska Airlines Logo
9:21 am - 5:22 pmSAN-HLN
31h 01m2 stops
Alaska Airlines Logo
5:59 pm - 7:17 amHLN-SAN
38h 18m2 stops
$286Alaska Airlines
Find Deal
Sat, Feb 7 - Mon, Feb 9
Alaska Airlines Logo
9:30 am - 5:22 pmLAX-HLN
6h 52m1 stop
Alaska Airlines Logo
5:59 pm - 10:59 amHLN-LAX
18h 00m1 stop
$292Alaska Airlines
Find Deal
Sat, Feb 7 - Mon, Feb 9
Alaska Airlines Logo
6:15 am - 5:22 pmSAN-HLN
10h 07m1 stop
Alaska Airlines Logo
5:59 pm - 5:20 pmHLN-SAN
24h 21m1 stop
$292Alaska Airlines
Find Deal
Sat, Feb 7 - Mon, Feb 9
Alaska Airlines Logo
4:03 pm - 5:22 pmONT-HLN
24h 19m1 stop
Alaska Airlines Logo
5:59 pm - 3:08 pmHLN-ONT
22h 09m1 stop
$302Alaska Airlines
Find Deal
Sat, Feb 7 - Mon, Feb 9
Delta Logo
5:45 am - 12:26 pmLAX-HLN
5h 41m1 stop
Delta Logo
1:06 pm - 6:19 pmHLN-LAX
6h 13m1 stop
$329Delta
Find Deal
Tue, Nov 18 - Thu, Nov 20
Delta Logo
6:15 am - 12:26 pmSAN-HLN
5h 11m1 stop
Delta Logo
5:30 am - 12:01 pmHLN-SAN
7h 31m1 stop
$334Delta
Find Deal
Wed, Nov 19 - Sun, Nov 23
Delta Logo
5:45 am - 12:26 pmLAX-HLN
5h 41m1 stop
Delta Logo
1:06 pm - 6:19 pmHLN-LAX
6h 13m1 stop
$339Delta
Find Deal
Mon, Nov 24 - Fri, Nov 28
United Airlines Logo
1:33 pm - 9:22 pmONT-HLN
6h 49m1 stop
United Airlines Logo
6:40 am - 12:33 pmHLN-ONT
6h 53m1 stop
$404United Airlines
Find Deal
Tue, Nov 18 - Thu, Nov 20
United Airlines Logo
5:00 am - 1:27 pmLAX-HLN
7h 27m1 stop
United Airlines Logo
2:30 pm - 7:17 pmHLN-LAX
5h 47m1 stop
$404United Airlines
Find Deal
Wed, Nov 26 - Tue, Dec 2

Alaska Airlines flights from California to Helena

Our best Alaska Airlines deals on California to Helena flight tickets
Alaska Airlines
Feb 7
SAN9:21 amSan Diego
31h 01m
2 stops
HLN5:22 pmHelena
Feb 9
HLN5:59 pmHelena
38h 18m
2 stops
SAN7:17 amSan Diego
$286
Find similar
Alaska Airlines
Feb 7
LAX9:30 amLos Angeles
6h 52m
1 stop
HLN5:22 pmHelena
Feb 9
HLN5:59 pmHelena
18h 00m
1 stop
LAX10:59 amLos Angeles
$292
Find similar
Alaska Airlines
Feb 7
ONT4:03 pmOntario
24h 19m
1 stop
HLN5:22 pmHelena
Feb 9
HLN5:59 pmHelena
22h 09m
1 stop
ONT3:08 pmOntario
$302
Find similar

Delta flights from California to Helena

Our best Delta deals on California to Helena flight tickets
Delta
Nov 18
LAX5:45 amLos Angeles
5h 41m
1 stop
HLN12:26 pmHelena
Nov 20
HLN1:06 pmHelena
6h 13m
1 stop
LAX6:19 pmLos Angeles
$329
Find similar
Delta
Nov 19
SAN6:15 amSan Diego
5h 11m
1 stop
HLN12:26 pmHelena
Nov 23
HLN5:30 amHelena
7h 31m
1 stop
SAN12:01 pmSan Diego
$334
Find similar
Delta
Nov 24
LAX5:45 amLos Angeles
5h 41m
1 stop
HLN12:26 pmHelena
Nov 28
HLN1:06 pmHelena
6h 13m
1 stop
LAX6:19 pmLos Angeles
$339
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from California 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, momondo users made 832,500 searches. Data last updated October 22, 2025.
Use the filters below to find and compare flights from California to Helena that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

San FranciscoHelena

SFO - HLN

SFOHLN

San Francisco

Thu 12/4

9:00 am-5:51 pm

1 stop7h 51m

Helena

Thu 12/11

6:28 pm-11:59 pm

1 stop6h 31m

$247

San DiegoHelena

SAN - HLN

SANHLN

San Diego

Sat 2/7

9:21 am-5:22 pm

2 stops31h 01m

Helena

Mon 2/9

5:59 pm-7:17 am

2 stops38h 18m

$286

Los AngelesHelena

LAX - HLN

LAXHLN

Los Angeles

Sat 2/7

9:30 am-5:22 pm

1 stop6h 52m

Helena

Mon 2/9

5:59 pm-10:59 am

1 stop18h 00m

$292

San DiegoHelena

SAN - HLN

SANHLN

San Diego

Sat 2/7

6:15 am-5:22 pm

1 stop10h 07m

Helena

Mon 2/9

5:59 pm-5:20 pm

1 stop24h 21m

$292

OntarioHelena

ONT - HLN

ONTHLN

Ontario

Sat 2/7

4:03 pm-5:22 pm

1 stop24h 19m

Helena

Mon 2/9

5:59 pm-3:08 pm

1 stop22h 09m

$302

Los AngelesHelena

LAX - HLN

LAXHLN

Los Angeles

Tue 11/18

5:45 am-12:26 pm

1 stop5h 41m

Helena

Thu 11/20

1:06 pm-6:19 pm

1 stop6h 13m

$329

San DiegoHelena

SAN - HLN

SANHLN

San Diego

Wed 11/19

6:15 am-12:26 pm

1 stop5h 11m

Helena

Sun 11/23

5:30 am-12:01 pm

1 stop7h 31m

$334

Los AngelesHelena

LAX - HLN

LAXHLN

Los Angeles

Mon 11/24

5:45 am-12:26 pm

1 stop5h 41m

Helena

Fri 11/28

1:06 pm-6:19 pm

1 stop6h 13m

$339

OntarioHelena

ONT - HLN

ONTHLN

Ontario

Tue 11/18

1:33 pm-9:22 pm

1 stop6h 49m

Helena

Thu 11/20

6:40 am-12:33 pm

1 stop6h 53m

$404

Los AngelesHelena

LAX - HLN

LAXHLN

Los Angeles

Wed 11/26

5:00 am-1:27 pm

1 stop7h 27m

Helena

Tue 12/2

2:30 pm-7:17 pm

1 stop5h 47m

$404

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Helena from

How to get the cheapest flight ticket from California 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 is the cheapest day to depart on your flight to Helena?

The cheapest day to depart from California to Helena is on a Friday. Travelers who choose to depart for Helena on a Friday will often find tickets for as low as $431. The most expensive day to fly to Helena is Wednesday, with ticket prices averaging around $497.

What is the cheapest time of day to depart on your flight to Helena?

According to our data, the cheapest time of day to fly to Helena is in the afternoon. momondo users have found flights departing from California to Helena in the afternoon for as low as $393. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. In contrast, the most expensive time of day to depart to Helena is at noon when prices are around $611.

Cheap California to Helena flight deals and tips

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

Direct flights

None
There are no direct flights from California to Helena. There are no popular flight routes from California to Helena.
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  • When did momondo last update prices for flights from California to Helena Airport?

    Prices for flights from California to Helena Airport refresh daily.

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

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

    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 California to Helena Airport.

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

    The travel and health documents you'll need for your trip to Helena Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Helena Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

Best airlines flying from California to Helena

Compare and see reviews for airlines that fly from California to Helena with momondo
Airline
Rating
Free Cancellation
Price
DeltaPriceFrom $199Free CancellationRating
7.9
7,979 reviews
Search Delta flights
Alaska AirlinesPriceFrom $239Free CancellationRating
8.0
11,150 reviews
Search Alaska Airlines flights
United AirlinesPriceFrom $297Free CancellationRating
7.4
8,988 reviews
Search United Airlines flights

Why use momondo?

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

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from California to Helena for you.

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

Yes. All flights to Helena from California on momondo can be compared and filtered by various policies on offer, including flexible booking.

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

Once all potential California to Helena flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

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

If you are simply researching potential flights to Helena, momondo offers a useful price alert feature which will track prices for flights to Helena from California and alert you when they change.

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Fri 11/21
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