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

Prices for flights from San Jose Airport to Helena Airport refresh daily.

How old do you have to be to fly from San Jose Airport 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 San Jose Airport 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.

$244 Cheap Flights from San Jose, California to Helena in 2026/27

Find the cheapest flights from San Jose, California to Helena

Round-trip

One-way

Last minute

Cheap round-trip flights

Enter your travel dates to find the best prices.

7:00 am - 4:23 pmSJC San Jose-HLN Helena

8h 23m1 stop Seattle/Tacoma Intl

5:00 pm - 10:30 pmHLN Helena-SJC San Jose

6h 30m1 stop Seattle/Tacoma Intl

$353Alaska Airlines

Tue, Jan 26 - Sat, Jan 30

11:20 am - 4:23 pmSJC San Jose-HLN Helena

28h 03m2 stops San Diego Seattle/Tacoma Intl

5:00 pm - 10:30 pmHLN Helena-SJC San Jose

6h 30m1 stop Seattle/Tacoma Intl

$401Alaska Airlines

Tue, Jan 26 - Sat, Jan 30

2:58 pm - 4:23 pmSJC San Jose-HLN Helena

24h 25m2 stops San Diego Seattle/Tacoma Intl

5:00 pm - 10:41 amHLN Helena-SJC San Jose

18h 41m2 stops Seattle/Tacoma Intl San Diego

$479Alaska Airlines

Tue, Jan 26 - Sat, Jan 30

5:47 pm - 4:23 pmSJC San Jose-HLN Helena

21h 36m2 stops San Diego Seattle/Tacoma Intl

5:00 pm - 1:44 pmHLN Helena-SJC San Jose

21h 44m2 stops Seattle/Tacoma Intl Portland

$486Alaska Airlines

Tue, Jan 26 - Sat, Jan 30

7:30 am - 4:23 pmSJC San Jose-HLN Helena

7h 53m2 stops Portland Seattle/Tacoma Intl

5:00 pm - 7:34 amHLN Helena-SJC San Jose

15h 34m2 stops Seattle/Tacoma Intl Los Angeles

$594Alaska Airlines

Tue, Jan 26 - Sat, Jan 30

7:30 am - 4:23 pmSJC San Jose-HLN Helena

7h 53m2 stops Portland Seattle/Tacoma Intl

5:00 pm - 7:34 amHLN Helena-SJC San Jose

15h 34m2 stops Seattle/Tacoma Intl Los Angeles

$614Alaska Airlines

Tue, Jan 26 - Sat, Jan 30

6:00 am - 12:27 pmSJC San Jose-HLN Helena

5h 27m1 stop Salt Lake City

7:00 am - 12:53 pmHLN Helena-SJC San Jose

6h 53m1 stop Salt Lake City

$689Delta

Fri, Nov 20 - Tue, Nov 24

6:00 am - 12:27 pmSJC San Jose-HLN Helena

5h 27m1 stop Salt Lake City

7:00 am - 3:39 pmHLN Helena-SJC San Jose

9h 39m2 stops Salt Lake City Los Angeles

$694Delta

Fri, Nov 20 - Tue, Nov 24

10:37 am - 4:49 pmSJC San Jose-HLN Helena

5h 12m1 stop Seattle/Tacoma Intl

5:26 pm - 10:59 pmHLN Helena-SJC San Jose

6h 33m1 stop Seattle/Tacoma Intl

$745Alaska Airlines

Thu, Oct 8 - Mon, Oct 12

6:00 am - 12:27 pmSJC San Jose-HLN Helena

5h 27m1 stop Salt Lake City

1:07 pm - 6:27 pmHLN Helena-SJC San Jose

6h 20m1 stop Salt Lake City

$798Delta

Sat, Nov 21 - Sat, Nov 28

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Alaska Airlines flights from San Jose, California to Helena

Our best Alaska Airlines deals on San Jose, California to Helena flight tickets

Alaska Airlines

Jan 26

SJC7:00 amSan Jose

8h 23m

1 stop

HLN4:23 pmHelena

Jan 30

HLN5:00 pmHelena

6h 30m

1 stop

SJC10:30 pmSan Jose

$353

Alaska Airlines

Jan 26

SJC11:20 amSan Jose

28h 03m

2 stops

HLN4:23 pmHelena

Jan 30

HLN5:00 pmHelena

6h 30m

1 stop

SJC10:30 pmSan Jose

$401

Alaska Airlines

Jan 26

SJC2:58 pmSan Jose

24h 25m

2 stops

HLN4:23 pmHelena

Jan 30

HLN5:00 pmHelena

18h 41m

2 stops

SJC10:41 amSan Jose

$479

Delta flights from San Jose, California to Helena

Our best Delta deals on San Jose, California to Helena flight tickets

Delta

Nov 20

SJC6:00 amSan Jose

5h 27m

1 stop

HLN12:27 pmHelena

Nov 24

HLN7:00 amHelena

6h 53m

1 stop

SJC12:53 pmSan Jose

$689

Delta

Nov 20

SJC6:00 amSan Jose

5h 27m

1 stop

HLN12:27 pmHelena

Nov 24

HLN7:00 amHelena

9h 39m

2 stops

SJC3:39 pmSan Jose

$694

Delta

Nov 21

SJC6:00 amSan Jose

5h 27m

1 stop

HLN12:27 pmHelena

Nov 28

HLN1:07 pmHelena

6h 20m

1 stop

SJC6:27 pmSan Jose

$798

momondo Fare Finder

Use the filters below to find and compare flights from San Jose, California to Helena that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

San JoseHelena

SJC San Jose - HLN Helena

SJCHLN

San Jose

Tue 1/26

7:00 am-4:23 pm

1 stop8h 23m

Helena

Sat 1/30

5:00 pm-10:30 pm

1 stop6h 30m

$353

San JoseHelena

SJC San Jose - HLN Helena

SJCHLN

San Jose

Tue 1/26

11:20 am-4:23 pm

2 stops28h 03m

Helena

Sat 1/30

5:00 pm-10:30 pm

1 stop6h 30m

$401

San JoseHelena

SJC San Jose - HLN Helena

SJCHLN

San Jose

Tue 1/26

2:58 pm-4:23 pm

2 stops24h 25m

Helena

Sat 1/30

5:00 pm-10:41 am

2 stops18h 41m

$479

San JoseHelena

SJC San Jose - HLN Helena

SJCHLN

San Jose

Tue 1/26

5:47 pm-4:23 pm

2 stops21h 36m

Helena

Sat 1/30

5:00 pm-1:44 pm

2 stops21h 44m

$486

San JoseHelena

SJC San Jose - HLN Helena

SJCHLN

San Jose

Tue 1/26

7:30 am-4:23 pm

2 stops7h 53m

Helena

Sat 1/30

5:00 pm-7:34 am

2 stops15h 34m

$594

San JoseHelena

SJC San Jose - HLN Helena

SJCHLN

San Jose

Tue 1/26

7:30 am-4:23 pm

2 stops7h 53m

Helena

Sat 1/30

5:00 pm-7:34 am

2 stops15h 34m

$614

San JoseHelena

SJC San Jose - HLN Helena

SJCHLN

San Jose

Fri 11/20

6:00 am-12:27 pm

1 stop5h 27m

Helena

Tue 11/24

7:00 am-12:53 pm

1 stop6h 53m

$689

San JoseHelena

SJC San Jose - HLN Helena

SJCHLN

San Jose

Fri 11/20

6:00 am-12:27 pm

1 stop5h 27m

Helena

Tue 11/24

7:00 am-3:39 pm

2 stops9h 39m

$694

Quickest round-trip

San JoseHelena

SJC San Jose - HLN Helena

SJCHLN

San Jose

Thu 10/8

10:37 am-4:49 pm

1 stop5h 12m

Helena

Mon 10/12

5:26 pm-10:59 pm

1 stop6h 33m

$745

San JoseHelena

SJC San Jose - HLN Helena

SJCHLN

San Jose

Sat 11/21

6:00 am-12:27 pm

1 stop5h 27m

Helena

Sat 11/28

1:07 pm-6:27 pm

1 stop6h 20m

$798

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 16 resultsSorted by cheapest first

How to get the cheapest flight ticket from San Jose, 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 airline that flies from San Jose to Helena?

Alaska Airlines and Delta are the most popular carriers operating from San Jose to Helena

What airlines fly to Helena?

United Airlines, Alaska Airlines and Delta are the top three most popular airlines that fly to Helena from San Jose, California according to our data. United Airlines is the first choice among our users, with 47% of people opting to fly with this airline when traveling to Helena. Keep in mind that there are 4 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 San Jose, California to Helena

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

Estimated round-trip price

Cheap San Jose, California to Helena (SJC to HLN) flight deals and tips

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

Best Price Found	$244
Fastest flight time	5h 27m
Direct flights	None

The best one-way flight to Helena from San Jose, California in the past 72 hours is $244. The best round-trip flight deal from San Jose, California to Helena found on momondo in the last 72 hours is $353.

The fastest flight from San Jose, California to Helena takes 5h 27m

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

Search flight deals

Frequently asked questions about flying from San Jose, California to Helena

How far is San Jose to Helena by plane?
The distance between San Jose and Helena is about 813.6 mi. 5h 27m is a normal flight duration for this route.
When did momondo last update prices for flights from San Jose Airport to Helena Airport?
Prices for flights from San Jose Airport to Helena Airport refresh daily.
How old do you have to be to fly from San Jose Airport 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 San Jose Airport 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.

Why use momondo?

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

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Helena from San Jose.

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

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

How can momondo help me find flights from San Jose to Helena?

Once you have performed a search for San Jose to Helena flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

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

Yes momondo offers price alerts on flights to Helena from San Jose. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.