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Cheap flights from California to Helena from $121

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 10/18. 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

Hawaiian Airlines Logo
7:45 am - 3:21 pmLAS-HLN
6h 36m1 stop
Hawaiian Airlines Logo
4:02 pm - 9:28 pmHLN-LAS
6h 26m1 stop
$278Hawaiian Airlines
Find Deal
Sat, Sep 27 - Tue, Sep 30
United Airlines Logo
3:17 pm - 9:11 pmLAS-HLN
4h 54m1 stop
United Airlines Logo
5:18 pm - 9:47 pmHLN-LAS
5h 29m1 stop
$279United Airlines
Find Deal
Wed, Sep 24 - Sat, Sep 27
Alaska Airlines Logo
6:20 am - 5:41 pmSMF-HLN
10h 21m1 stop
Alaska Airlines Logo
6:18 pm - 7:34 amHLN-SMF
14h 16m2 stops
$288Alaska Airlines
Find Deal
Sat, Oct 18 - Sat, Oct 25
Delta Logo
5:35 am - 12:20 pmSMF-HLN
5h 45m1 stop
Delta Logo
5:45 am - 8:52 amHLN-SMF
4h 07m1 stop
$301Delta
Find Deal
Sat, Oct 18 - Sat, Oct 25
Alaska Airlines Logo
7:45 am - 5:36 pmLAS-HLN
8h 51m1 stop
Alaska Airlines Logo
6:13 pm - 10:14 pmHLN-LAS
29h 01m2 stops
$304Alaska Airlines
Find Deal
Tue, Oct 28 - Fri, Oct 31
Delta Logo
6:20 am - 12:20 pmLAS-HLN
5h 00m1 stop
Delta Logo
5:45 am - 8:12 amHLN-LAS
3h 27m1 stop
$309Delta
Find Deal
Tue, Oct 28 - Fri, Oct 31
Hawaiian Airlines Logo
10:00 am - 5:41 pmLAX-HLN
6h 41m1 stop
Hawaiian Airlines Logo
6:18 pm - 12:01 amHLN-LAX
6h 43m1 stop
$313Hawaiian Airlines
Find Deal
Thu, Oct 16 - Sat, Oct 18
Delta Logo
5:30 am - 12:26 pmSMF-HLN
5h 56m1 stop
Delta Logo
5:30 am - 9:10 amHLN-SMF
4h 40m1 stop
$321Delta
Find Deal
Wed, Nov 19 - Tue, Dec 2
Logo
6:00 am - 1:30 pmLAS-HLN
6h 30m1 stop
Logo
4:02 pm - 9:28 pmHLN-LAS
6h 26m1 stop
$652
Find Deal
Tue, Sep 23 - Tue, Sep 23
Logo
5:05 am - 1:30 pmLAX-HLN
7h 25m1 stop
Logo
4:02 pm - 8:48 pmHLN-LAX
5h 46m1 stop
$675
Find Deal
Tue, Sep 23 - Tue, Sep 23

Delta flights from California to Helena

Our best Delta deals on California to Helena flight tickets
Delta
Oct 18
SMF5:35 amSacramento Intl
5h 45m
1 stop
HLN12:20 pmHelena
Oct 25
HLN5:45 amHelena
4h 07m
1 stop
SMF8:52 amSacramento Intl
$301
Find similar
Delta
Oct 28
LAS6:20 amLas Vegas Harry Reid Intl
5h 00m
1 stop
HLN12:20 pmHelena
Oct 31
HLN5:45 amHelena
3h 27m
1 stop
LAS8:12 amLas Vegas Harry Reid Intl
$309
Find similar
Delta
Nov 19
SMF5:30 amSacramento Intl
5h 56m
1 stop
HLN12:26 pmHelena
Dec 2
HLN5:30 amHelena
4h 40m
1 stop
SMF9:10 amSacramento Intl
$321
Find similar

United Airlines flights from California to Helena

Our best United Airlines deals on California to Helena flight tickets
United Airlines
Sep 24
LAS3:17 pmLas Vegas Harry Reid Intl
4h 54m
1 stop
HLN9:11 pmHelena
Sep 27
HLN5:18 pmHelena
5h 29m
1 stop
LAS9:47 pmLas Vegas Harry Reid Intl
$279
Find similar
United Airlines
Dec 10
SJC12:40 pmSan Jose
7h 42m
1 stop
HLN9:22 pmHelena
Dec 17
HLN2:30 pmHelena
7h 57m
1 stop
SJC9:27 pmSan Jose
$325
Find similar
United Airlines
Oct 5
SNA8:40 amSanta Ana J. Wayne/Orange Cnty
7h 00m
1 stop
HLN4:40 pmHelena
Oct 8
HLN5:18 pmHelena
5h 48m
1 stop
SNA10:06 pmSanta Ana J. Wayne/Orange Cnty
$426
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 September 4, 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

Las VegasHelena

LAS - HLN

LASHLN

Las Vegas Harry Reid Intl

Sat 9/27

7:45 am-3:21 pm

1 stop6h 36m

Helena

Tue 9/30

4:02 pm-9:28 pm

1 stop6h 26m

$278

Las VegasHelena

LAS - HLN

LASHLN

Las Vegas Harry Reid Intl

Wed 9/24

3:17 pm-9:11 pm

1 stop4h 54m

Helena

Sat 9/27

5:18 pm-9:47 pm

1 stop5h 29m

$279

SacramentoHelena

SMF - HLN

SMFHLN

Sacramento Intl

Sat 10/18

6:20 am-5:41 pm

1 stop10h 21m

Helena

Sat 10/25

6:18 pm-7:34 am

2 stops14h 16m

$288

SacramentoHelena

SMF - HLN

SMFHLN

Sacramento Intl

Sat 10/18

5:35 am-12:20 pm

1 stop5h 45m

Helena

Sat 10/25

5:45 am-8:52 am

1 stop4h 07m

$301

Las VegasHelena

LAS - HLN

LASHLN

Las Vegas Harry Reid Intl

Tue 10/28

7:45 am-5:36 pm

1 stop8h 51m

Helena

Fri 10/31

6:13 pm-10:14 pm

2 stops29h 01m

$304

Las VegasHelena

LAS - HLN

LASHLN

Las Vegas Harry Reid Intl

Tue 10/28

6:20 am-12:20 pm

1 stop5h 00m

Helena

Fri 10/31

5:45 am-8:12 am

1 stop3h 27m

$309

Los AngelesHelena

LAX - HLN

LAXHLN

Los Angeles

Thu 10/16

10:00 am-5:41 pm

1 stop6h 41m

Helena

Sat 10/18

6:18 pm-12:01 am

1 stop6h 43m

$313

SacramentoHelena

SMF - HLN

SMFHLN

Sacramento Intl

Wed 11/19

5:30 am-12:26 pm

1 stop5h 56m

Helena

Tue 12/2

5:30 am-9:10 am

1 stop4h 40m

$321

Las VegasHelena

LAS - HLN

LASHLN

Las Vegas Harry Reid Intl

Tue 9/23

6:00 am-1:30 pm

1 stop6h 30m

Helena

Tue 9/23

4:02 pm-9:28 pm

1 stop6h 26m

$652

Los AngelesHelena

LAX - HLN

LAXHLN

Los Angeles

Tue 9/23

5:05 am-1:30 pm

1 stop7h 25m

Helena

Tue 9/23

4:02 pm-8:48 pm

1 stop5h 46m

$675

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 $205Free CancellationRating
7.9
7,977 reviews
Search Delta flights
Alaska AirlinesPriceFrom $239Free CancellationRating
8.0
10,000 reviews
Search Alaska Airlines flights
United AirlinesPriceFrom $297Free CancellationRating
7.4
8,939 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.

An easier way to manage your Helena trip

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