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.

$251 Cheap Flights from San Jose to Helena in 2026

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Find the cheapest flights from San Jose, California to Helena

Round-trip

One-way

Cheap round-trip flights

Enter your travel dates to find the best prices.

7:43 pm - 5:45 pm

SJC

HLN

21h 02m

1 stop

6:22 pm - 10:35 pm

HLN

SJC

5h 13m

1 stop

$251Alaska Airlines

Sat, May 2 - Wed, May 6

2:51 pm - 5:45 pm

SJC

HLN

25h 54m

2 stops

6:22 pm - 9:30 am

HLN

SJC

16h 08m

1 stop

$318Alaska Airlines

Sat, May 2 - Wed, May 6

7:43 pm - 5:45 pm

SJC

HLN

21h 02m

1 stop

6:22 pm - 10:35 pm

HLN

SJC

5h 13m

1 stop

$319Alaska Airlines

Sat, May 2 - Wed, May 6

2:51 pm - 5:45 pm

SJC

HLN

25h 54m

2 stops

6:22 pm - 11:17 am

HLN

SJC

17h 55m

2 stops

$333Alaska Airlines

Sat, May 2 - Wed, May 6

7:43 pm - 5:45 pm

SJC

HLN

21h 02m

1 stop

6:22 pm - 10:35 pm

HLN

SJC

5h 13m

1 stop

$337Alaska Airlines

Sat, May 2 - Wed, May 6

9:42 pm - 5:45 pm

SJC

HLN

19h 03m

1 stop

6:22 pm - 6:49 pm

HLN

SJC

25h 27m

1 stop

$343Alaska Airlines

Sat, May 2 - Wed, May 6

5:00 pm - 10:34 pm

SJC

HLN

4h 34m

1 stop

5:45 am - 8:57 am

HLN

SJC

4h 12m

1 stop

$349Delta

Sat, Aug 29 - Sun, Sep 6

2:44 pm - 5:45 pm

SJC

HLN

26h 01m

1 stop

6:22 pm - 10:35 pm

HLN

SJC

5h 13m

1 stop

$368Alaska Airlines

Sat, May 2 - Wed, May 6

5:00 pm - 10:34 pm

SJC

HLN

4h 34m

1 stop

12:50 pm - 4:16 pm

HLN

SJC

4h 26m

1 stop

$374Delta

Fri, Aug 28 - Sun, Sep 6

7:43 pm - 5:45 pm

SJC

HLN

21h 02m

1 stop

6:22 pm - 9:44 am

HLN

SJC

40h 22m

2 stops

$382Alaska Airlines

Tue, Apr 28 - Sat, May 2

Delta flights from San Jose, California to Helena

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

Delta

Aug 28

SJC5:00 pmSan Jose

4h 34m

1 stop

HLN10:34 pmHelena

Sep 6

HLN12:50 pmHelena

4h 26m

1 stop

SJC4:16 pmSan Jose

$374

Delta

Aug 28

SJC5:00 pmSan Jose

4h 34m

1 stop

HLN10:34 pmHelena

Sep 7

HLN12:50 pmHelena

4h 26m

1 stop

SJC4:16 pmSan Jose

$399

Delta

Apr 12

SJC6:00 amSan Jose

5h 21m

1 stop

HLN12:21 pmHelena

Apr 14

HLN5:40 amHelena

4h 07m

1 stop

SJC8:47 amSan Jose

$404

Alaska Airlines flights from San Jose, California to Helena

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

Alaska Airlines

May 2

SJC7:43 pmSan Jose

21h 02m

1 stop

HLN5:45 pmHelena

May 6

HLN6:22 pmHelena

5h 13m

1 stop

SJC10:35 pmSan Jose

$251

Alaska Airlines

May 2

SJC2:51 pmSan Jose

25h 54m

2 stops

HLN5:45 pmHelena

May 6

HLN6:22 pmHelena

16h 08m

1 stop

SJC9:30 amSan Jose

$318

Alaska Airlines

May 2

SJC7:43 pmSan Jose

21h 02m

1 stop

HLN5:45 pmHelena

May 6

HLN6:22 pmHelena

5h 13m

1 stop

SJC10:35 pmSan Jose

$319

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 - HLN

SJCHLN

San Jose

Sat 5/2

7:43 pm-5:45 pm

1 stop21h 02m

Helena

Wed 5/6

6:22 pm-10:35 pm

1 stop5h 13m

$251

San JoseHelena

SJC - HLN

SJCHLN

San Jose

Sat 5/2

2:51 pm-5:45 pm

2 stops25h 54m

Helena

Wed 5/6

6:22 pm-9:30 am

1 stop16h 08m

$318

San JoseHelena

SJC - HLN

SJCHLN

San Jose

Sat 5/2

7:43 pm-5:45 pm

1 stop21h 02m

Helena

Wed 5/6

6:22 pm-10:35 pm

1 stop5h 13m

$319

San JoseHelena

SJC - HLN

SJCHLN

San Jose

Sat 5/2

2:51 pm-5:45 pm

2 stops25h 54m

Helena

Wed 5/6

6:22 pm-11:17 am

2 stops17h 55m

$333

San JoseHelena

SJC - HLN

SJCHLN

San Jose

Sat 5/2

7:43 pm-5:45 pm

1 stop21h 02m

Helena

Wed 5/6

6:22 pm-10:35 pm

1 stop5h 13m

$337

San JoseHelena

SJC - HLN

SJCHLN

San Jose

Sat 5/2

9:42 pm-5:45 pm

1 stop19h 03m

Helena

Wed 5/6

6:22 pm-6:49 pm

1 stop25h 27m

$343

Quickest round-trip

San JoseHelena

SJC - HLN

SJCHLN

San Jose

Sat 8/29

5:00 pm-10:34 pm

1 stop4h 34m

Helena

Sun 9/6

5:45 am-8:57 am

1 stop4h 12m

$349

San JoseHelena

SJC - HLN

SJCHLN

San Jose

Sat 5/2

2:44 pm-5:45 pm

1 stop26h 01m

Helena

Wed 5/6

6:22 pm-10:35 pm

1 stop5h 13m

$368

San JoseHelena

SJC - HLN

SJCHLN

San Jose

Fri 8/28

5:00 pm-10:34 pm

1 stop4h 34m

Helena

Sun 9/6

12:50 pm-4:16 pm

1 stop4h 26m

$374

San JoseHelena

SJC - HLN

SJCHLN

San Jose

Tue 4/28

7:43 pm-5:45 pm

1 stop21h 02m

Helena

Sat 5/2

6:22 pm-9:44 am

2 stops40h 22m

$382

Flights are sorted by cheapest round-trip flights first.

Sorted 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 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 48% 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 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

Fastest flight time	4h 34m
Direct flights	None

The fastest flight from San Jose, California to Helena takes 4h 34m

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

How far is San Jose to Helena by plane?
The distance between San Jose and Helena is about 813.6 mi. 4h 34m 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.