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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 6/13. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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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.
Alaska Airlines Logo
6:22 pm - 10:02 am
HLN
-
SJC
16h 40m
2 stops
Alaska Airlines Logo
10:24 am - 5:45 pm
SJC
-
HLN
6h 21m
1 stop
$312Alaska Airlines
Sat, Apr 18 - Wed, Apr 22
Alaska Airlines Logo
6:22 pm - 9:28 am
HLN
-
SJC
16h 06m
1 stop
Alaska Airlines Logo
7:22 pm - 5:45 pm
SJC
-
HLN
21h 23m
2 stops
$322Alaska Airlines
Fri, Apr 17 - Sun, Apr 19
Alaska Airlines Logo
6:22 pm - 9:28 am
HLN
-
SJC
16h 06m
1 stop
Alaska Airlines Logo
10:24 am - 5:45 pm
SJC
-
HLN
6h 21m
1 stop
$332Alaska Airlines
Sat, Apr 18 - Wed, Apr 22
Alaska Airlines Logo
6:22 pm - 9:28 am
HLN
-
SJC
16h 06m
1 stop
Alaska Airlines Logo
10:24 am - 5:45 pm
SJC
-
HLN
6h 21m
1 stop
$347Alaska Airlines
Sat, Apr 18 - Wed, Apr 22
Alaska Airlines Logo
6:22 pm - 10:02 am
HLN
-
SJC
16h 40m
2 stops
Alaska Airlines Logo
2:51 pm - 5:45 pm
SJC
-
HLN
25h 54m
2 stops
$348Alaska Airlines
Sat, Apr 18 - Wed, Apr 22
Delta Logo
1:03 pm - 6:20 pm
HLN
-
SJC
6h 17m
1 stop
Delta Logo
4:59 pm - 10:33 pm
SJC
-
HLN
4h 34m
1 stop
$349Delta
Fri, May 29 - Sun, May 31
Alaska Airlines Logo
6:22 pm - 9:28 am
HLN
-
SJC
16h 06m
1 stop
Alaska Airlines Logo
6:15 am - 5:45 pm
SJC
-
HLN
10h 30m
1 stop
$350Alaska Airlines
Fri, Apr 17 - Sun, Apr 19
Alaska Airlines Logo
6:22 pm - 10:02 am
HLN
-
SJC
16h 40m
2 stops
Alaska Airlines Logo
2:51 pm - 5:45 pm
SJC
-
HLN
25h 54m
2 stops
$353Alaska Airlines
Sat, Apr 18 - Wed, Apr 22
Alaska Airlines Logo
6:22 pm - 10:02 am
HLN
-
SJC
16h 40m
2 stops
Alaska Airlines Logo
7:22 pm - 5:45 pm
SJC
-
HLN
21h 23m
2 stops
$378Alaska Airlines
Fri, Apr 17 - Sun, Apr 19
Alaska Airlines Logo
6:22 pm - 10:02 am
HLN
-
SJC
16h 40m
2 stops
Alaska Airlines Logo
7:22 pm - 5:45 pm
SJC
-
HLN
21h 23m
2 stops
$477Alaska Airlines
Thu, Apr 9 - Sat, Apr 11

Alaska Airlines flights from Helena to San Jose, California

Our best Alaska Airlines deals on Helena to San Jose, California flight tickets
Alaska Airlines
Apr 18
HLN6:22 pmHelena
16h 40m
2 stops
SJC10:02 amSan Jose
Apr 22
SJC10:24 amSan Jose
6h 21m
1 stop
HLN5:45 pmHelena
$312
Alaska Airlines
Apr 17
HLN6:22 pmHelena
16h 06m
1 stop
SJC9:28 amSan Jose
Apr 19
SJC7:22 pmSan Jose
21h 23m
2 stops
HLN5:45 pmHelena
$322
Alaska Airlines
Apr 18
HLN6:22 pmHelena
16h 06m
1 stop
SJC9:28 amSan Jose
Apr 22
SJC10:24 amSan Jose
6h 21m
1 stop
HLN5:45 pmHelena
$332

Delta flights from Helena to San Jose, California

Our best Delta deals on Helena to San Jose, California flight tickets
Delta
May 29
HLN1:03 pmHelena
6h 17m
1 stop
SJC6:20 pmSan Jose
May 31
SJC4:59 pmSan Jose
4h 34m
1 stop
HLN10:33 pmHelena
$349
Delta
Apr 1
HLN5:30 amHelena
4h 22m
1 stop
SJC8:52 amSan Jose
Apr 6
SJC4:50 pmSan Jose
4h 40m
1 stop
HLN10:30 pmHelena
$529
Delta
Apr 3
HLN5:30 amHelena
4h 22m
1 stop
SJC8:52 amSan Jose
Apr 5
SJC6:00 amSan Jose
5h 21m
1 stop
HLN12:21 pmHelena
$649

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 March 17, 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

HelenaSan Jose

HLN - SJC

HLNSJC

Helena

Sat 4/18

6:22 pm-10:02 am

2 stops16h 40m

San Jose

Wed 4/22

10:24 am-5:45 pm

1 stop6h 21m

$312

HelenaSan Jose

HLN - SJC

HLNSJC

Helena

Fri 4/17

6:22 pm-9:28 am

1 stop16h 06m

San Jose

Sun 4/19

7:22 pm-5:45 pm

2 stops21h 23m

$322

HelenaSan Jose

HLN - SJC

HLNSJC

Helena

Sat 4/18

6:22 pm-9:28 am

1 stop16h 06m

San Jose

Wed 4/22

10:24 am-5:45 pm

1 stop6h 21m

$332

HelenaSan Jose

HLN - SJC

HLNSJC

Helena

Sat 4/18

6:22 pm-9:28 am

1 stop16h 06m

San Jose

Wed 4/22

10:24 am-5:45 pm

1 stop6h 21m

$347

HelenaSan Jose

HLN - SJC

HLNSJC

Helena

Sat 4/18

6:22 pm-10:02 am

2 stops16h 40m

San Jose

Wed 4/22

2:51 pm-5:45 pm

2 stops25h 54m

$348
Quickest round-trip

HelenaSan Jose

HLN - SJC

HLNSJC

Helena

Fri 5/29

1:03 pm-6:20 pm

1 stop6h 17m

San Jose

Sun 5/31

4:59 pm-10:33 pm

1 stop4h 34m

$349

HelenaSan Jose

HLN - SJC

HLNSJC

Helena

Fri 4/17

6:22 pm-9:28 am

1 stop16h 06m

San Jose

Sun 4/19

6:15 am-5:45 pm

1 stop10h 30m

$350

HelenaSan Jose

HLN - SJC

HLNSJC

Helena

Sat 4/18

6:22 pm-10:02 am

2 stops16h 40m

San Jose

Wed 4/22

2:51 pm-5:45 pm

2 stops25h 54m

$353

HelenaSan Jose

HLN - SJC

HLNSJC

Helena

Fri 4/17

6:22 pm-10:02 am

2 stops16h 40m

San Jose

Sun 4/19

7:22 pm-5:45 pm

2 stops21h 23m

$378

HelenaSan Jose

HLN - SJC

HLNSJC

Helena

Thu 4/9

6:22 pm-10:02 am

2 stops16h 40m

San Jose

Sat 4/11

7:22 pm-5:45 pm

2 stops21h 23m

$477

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 15 resultsSorted by cheapest first
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See travel insights to San Jose from

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

What is the cheapest airline that flies from Helena to San Jose?

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

What airlines fly to San Jose, California?

United Airlines, Alaska Airlines and Delta are the top three most popular airlines that fly to San Jose, California from Helena according to our data. United Airlines is the first choice among our users, with 35% of people opting to fly with this airline when traveling to San Jose, California. Keep in mind that there are 5 different airlines that fly to San Jose, California on a routine basis, so you have a few additional options to choose from.

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 12m

Direct flights

None
The fastest flight from Helena to San Jose, California takes 4h 12m
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

  • 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 12m.

  • 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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