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Cheap flights from Helena to San Jose from $175

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Helena to San Jose departing on 9/12. 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 Helena to San Jose

Cheap round-trip flights

Enter your travel dates to find the best prices.
Delta Logo
1:03 pm - 4:09 pm
HLN
-
SJC
4h 06m
1 stop
Delta Logo
4:59 pm - 10:33 pm
SJC
-
HLN
4h 34m
1 stop
$349Delta
Sat, May 30 - Fri, Jun 5
Delta Logo
5:35 am - 9:02 am
HLN
-
SJC
4h 27m
1 stop
Delta Logo
5:01 pm - 10:41 pm
SJC
-
HLN
4h 40m
1 stop
$402Delta
Fri, Jun 26 - Fri, Jul 3
United Airlines Logo
2:29 pm - 9:10 pm
HLN
-
SJC
7h 41m
1 stop
United Airlines Logo
1:00 pm - 9:16 pm
SJC
-
HLN
7h 16m
1 stop
$419United Airlines
Wed, Sep 2 - Sat, Sep 5
Alaska Airlines Logo
5:11 pm - 10:57 pm
HLN
-
SJC
6h 46m
1 stop
Alaska Airlines Logo
5:06 pm - 4:34 pm
SJC
-
HLN
22h 28m
2 stops
$492Alaska Airlines
Wed, Sep 2 - Sat, Sep 5
Alaska Airlines Logo
5:09 pm - 10:40 pm
HLN
-
SJC
6h 31m
1 stop
Alaska Airlines Logo
8:12 pm - 4:32 pm
SJC
-
HLN
19h 20m
2 stops
$532Alaska Airlines
Sat, Jun 27 - Fri, Jul 3
Alaska Airlines Logo
5:11 pm - 10:57 pm
HLN
-
SJC
6h 46m
1 stop
Alaska Airlines Logo
10:13 am - 4:34 pm
SJC
-
HLN
5h 21m
1 stop
$533Alaska Airlines
Wed, Sep 2 - Sat, Sep 5
United Airlines Logo
2:29 pm - 9:10 pm
HLN
-
SJC
7h 41m
1 stop
United Airlines Logo
1:00 pm - 9:16 pm
SJC
-
HLN
7h 16m
1 stop
$542United Airlines
Wed, Sep 2 - Sat, Sep 5
Delta Logo
1:03 pm - 4:09 pm
HLN
-
SJC
4h 06m
1 stop
Delta Logo
6:00 am - 12:23 pm
SJC
-
HLN
5h 23m
1 stop
$567Delta
Fri, May 15 - Sun, May 17
Alaska Airlines Logo
5:11 pm - 10:28 pm
HLN
-
SJC
6h 17m
2 stops
Alaska Airlines Logo
5:06 pm - 4:34 pm
SJC
-
HLN
22h 28m
2 stops
$598Alaska Airlines
Wed, Sep 2 - Sat, Sep 5
Alaska Airlines Logo
5:11 pm - 12:48 pm
HLN
-
SJC
20h 37m
1 stop
Alaska Airlines Logo
5:06 pm - 4:34 pm
SJC
-
HLN
22h 28m
2 stops
$624Alaska Airlines
Wed, Sep 2 - Sat, Sep 5

Alaska Airlines flights from Helena to San Jose, California

Our best Alaska Airlines deals on Helena to San Jose, California flight tickets
Alaska Airlines
Sep 2
HLN5:11 pmHelena
6h 46m
1 stop
SJC10:57 pmSan Jose
Sep 5
SJC5:06 pmSan Jose
22h 28m
2 stops
HLN4:34 pmHelena
$492
Alaska Airlines
Jun 27
HLN5:09 pmHelena
6h 31m
1 stop
SJC10:40 pmSan Jose
Jul 3
SJC8:12 pmSan Jose
19h 20m
2 stops
HLN4:32 pmHelena
$532
Alaska Airlines
Sep 2
HLN5:11 pmHelena
6h 46m
1 stop
SJC10:57 pmSan Jose
Sep 5
SJC10:13 amSan Jose
5h 21m
1 stop
HLN4:34 pmHelena
$533

Delta flights from Helena to San Jose, California

Our best Delta deals on Helena to San Jose, California flight tickets
Delta
May 30
HLN1:03 pmHelena
4h 06m
1 stop
SJC4:09 pmSan Jose
Jun 5
SJC4:59 pmSan Jose
4h 34m
1 stop
HLN10:33 pmHelena
$349
Delta
Jun 26
HLN5:35 amHelena
4h 27m
1 stop
SJC9:02 amSan Jose
Jul 3
SJC5:01 pmSan Jose
4h 40m
1 stop
HLN10:41 pmHelena
$402
Delta
May 16
HLN1:03 pmHelena
4h 06m
1 stop
SJC4:09 pmSan Jose
May 18
SJC4:59 pmSan Jose
4h 34m
1 stop
HLN10:33 pmHelena
$419

momondo Fare Finder

 
Customize your flight search to find flights from Helena to San Jose, California 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 May 3, 2026.
Use the filters below to find and compare flights from Helena to San Jose, California that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip
Quickest round-trip

HelenaSan Jose

HLN - SJC

HLNSJC

Helena

Sat 5/30

1:03 pm-4:09 pm

1 stop4h 06m

San Jose

Fri 6/5

4:59 pm-10:33 pm

1 stop4h 34m

$349

HelenaSan Jose

HLN - SJC

HLNSJC

Helena

Fri 6/26

5:35 am-9:02 am

1 stop4h 27m

San Jose

Fri 7/3

5:01 pm-10:41 pm

1 stop4h 40m

$402

HelenaSan Jose

HLN - SJC

HLNSJC

Helena

Wed 9/2

2:29 pm-9:10 pm

1 stop7h 41m

San Jose

Sat 9/5

1:00 pm-9:16 pm

1 stop7h 16m

$419

HelenaSan Jose

HLN - SJC

HLNSJC

Helena

Wed 9/2

5:11 pm-10:57 pm

1 stop6h 46m

San Jose

Sat 9/5

5:06 pm-4:34 pm

2 stops22h 28m

$492

HelenaSan Jose

HLN - SJC

HLNSJC

Helena

Sat 6/27

5:09 pm-10:40 pm

1 stop6h 31m

San Jose

Fri 7/3

8:12 pm-4:32 pm

2 stops19h 20m

$532

HelenaSan Jose

HLN - SJC

HLNSJC

Helena

Wed 9/2

5:11 pm-10:57 pm

1 stop6h 46m

San Jose

Sat 9/5

10:13 am-4:34 pm

1 stop5h 21m

$533

HelenaSan Jose

HLN - SJC

HLNSJC

Helena

Wed 9/2

2:29 pm-9:10 pm

1 stop7h 41m

San Jose

Sat 9/5

1:00 pm-9:16 pm

1 stop7h 16m

$542

HelenaSan Jose

HLN - SJC

HLNSJC

Helena

Fri 5/15

1:03 pm-4:09 pm

1 stop4h 06m

San Jose

Sun 5/17

6:00 am-12:23 pm

1 stop5h 23m

$567

HelenaSan Jose

HLN - SJC

HLNSJC

Helena

Wed 9/2

5:11 pm-10:28 pm

2 stops6h 17m

San Jose

Sat 9/5

5:06 pm-4:34 pm

2 stops22h 28m

$598

HelenaSan Jose

HLN - SJC

HLNSJC

Helena

Wed 9/2

5:11 pm-12:48 pm

1 stop20h 37m

San Jose

Sat 9/5

5:06 pm-4:34 pm

2 stops22h 28m

$624

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 16 resultsSorted by cheapest first
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How to get the cheapest flight ticket from Helena to San Jose, 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

Can stopping save me money on Helena to San Jose, California flights?

You could potentially save up to 31% on your flight if you consider stops on a Helena to San Jose, California flight.

When to book flights from Helena to San Jose, California

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

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

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

Fastest flight time

4h 06m

Direct flights

None
The fastest flight from Helena to San Jose, California takes 4h 06m
There are no direct flights from Helena to San Jose, California. There are no popular flight routes from Helena to San Jose, California.
Search flight deals

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

  • How far is Helena to San Jose by plane?

    The straight-line distance from Helena to San Jose is 813.6 mi. A reasonable flight in good conditions will take 4h 06m.

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

    Prices for flights from Helena Airport to San Jose Airport are updated daily.

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

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Helena Airport to San Jose Airport.

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

    The travel and health documents you'll need for your trip to San Jose 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 San Jose 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 Helena to San Jose?

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Helena to San Jose. Millions of users trust and use momondo every year so you are in good hands.

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

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

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

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 San Jose from Helena.

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

Of course. momondo tracks the price of Helena to San Jose flights. All you need is a valid email address and we will do the rest; it is that quick and easy.

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