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$119+ Cheap flights from Helena to San Jose, CA (HLN - SJC)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 12/6. Fares are subject to change and may not be available on all flights or dates of travel.
HLN — SJC
Dec 13 — Dec 201
Sat 12/13
Sat 12/20
1 adult, Economy
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Cheap flight deals from Helena to San Jose

Discover tips and strategies to find the most affordable flight options for your journey from Helena (HLN) to San Jose (SJC). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated November 13, 2025.

Round-trip from

$228
(Hawaiian Airlines)

One-way from

$119
(Alaska Airlines)
From Helena to San Jose
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One-way flight from Helena to San Jose
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Find flight deals from Helena to San Jose

Cheapest flights from Helena to San Jose
Explore the most affordable flight options available from Helena to San Jose. Find the lowest fares from popular airlines and budget airlines, with prices last updated on November 13, 2025.

This Alaska Airlines deal was found by Cheapflights users on 11/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/206:32 pmHLN - SJC
1 stop15h 50mAlaska Airlines
Sat 12/277:07 pmSJC - HLN
1 stop21h 48mAlaska Airlines
Deal found 11/11$771

Cheapflights Fare Finder

 
Customize your flight search to find flights from Helena to San Jose 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, Cheapflights users made 2,558,603 searches. Data last updated November 13, 2025.
Use the filters below to find and compare flights from Helena to San Jose that are best for you.

Fly from

Helena

Fly to

San Jose

Route

Depart

Return

Price

HelenaSan Jose

HLN - SJC

HLNSJC

Helena

Sat 3/7

4:36 pm-10:59 pm

1 stop7h 23m

San Jose

Tue 3/10

10:16 am-3:59 pm

1 stop4h 43m

$228

HelenaSan Jose

HLN - SJC

HLNSJC

Helena

Sat 3/7

4:36 pm-10:59 pm

1 stop7h 23m

San Jose

Tue 3/10

7:40 am-3:59 pm

2 stops7h 19m

$281

HelenaSan Jose

HLN - SJC

HLNSJC

Helena

Sat 3/7

1:07 pm-8:05 pm

2 stops7h 58m

San Jose

Tue 3/10

7:15 am-10:38 pm

2 stops14h 23m

$314

HelenaSan Jose

HLN - SJC

HLNSJC

Helena

Sat 12/20

6:32 pm-9:22 am

1 stop15h 50m

San Jose

Sat 12/27

7:07 pm-5:55 pm

1 stop21h 48m

$771

HelenaSan Jose

HLN - SJC

HLNSJC

Helena

Sat 12/6

6:28 pm-10:59 pm

1 stop5h 31m

$119

HelenaSan Jose

HLN - SJC

HLNSJC

Helena

Thu 12/4

6:28 pm-10:59 pm

1 stop5h 31m

$129

HelenaSan Jose

HLN - SJC

HLNSJC

Helena

Sat 12/6

5:30 am-12:56 pm

2 stops8h 26m

$158

HelenaSan Jose

HLN - SJC

HLNSJC

Helena

Wed 12/3

6:28 pm-6:55 pm

1 stop25h 27m

$167

HelenaSan Jose

HLN - SJC

HLNSJC

Helena

Tue 12/2

6:28 pm-6:55 pm

1 stop25h 27m

$182

HelenaSan Jose

HLN - SJC

HLNSJC

Helena

Thu 12/4

5:30 am-12:56 pm

2 stops8h 26m

$207

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/11

Showing 1-10 of 13 results
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Best time to book a flight from Helena to San Jose

Have a flexible travel schedule? Discover the best time to fly to San Jose from Helena with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Helena to San Jose

What is the cheapest month to book a flight from Helena to San Jose, California?

Currently, July is the cheapest month in which you can book a flight from Helena to San Jose, California (average of $41). Flying from Helena to San Jose, California in May is currently the most expensive (average of $219). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

Reviews of airlines servicing San Jose

Get insights into the airlines that provide service to San Jose. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to San Jose. Reviews last updated November 13, 2025.
Read reviews from past customers who have flown Delta from Helena to San Jose. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
7.9
Good
8,007 reviews

Comfort

7.9

Crew

8.5

Food

7.3

Boarding

8.1

Entertainment

7.9

Overall

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
Delta
7.9
Good
8,007 reviews
Delta
7.9
Good
8,007 reviews

Comfort

7.9

Crew

8.5

Food

7.3

Boarding

8.1

Entertainment

7.9

Overall

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Related info for your journey

Find useful and relevant information for your journey from Helena to San Jose. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from Helena to San Jose, California?

    Hawaiian Airlines and Alaska Airlines can get you from Helena to San Jose, California in just under 7h 23m. Your travel time can differ by up to . The distance from Helena to San Jose, California is about 816 mi.

  • What is the cheapest airline to fly from Helena to San Jose, California round-trip?

    Flying on Delta is currently your cheapest option to San Jose, California, with prices starting at $336.

  • Can I find deals for flights from Helena to San Jose that include hotel bookings?

    Yes. In addition to deals on Helena to San Jose flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Helena to San Jose?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Helena to San Jose.

  • Can I find deals for business class flights from Helena to San Jose?

    Yes. Cheapflights offers flight deals from Helena to San Jose by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Helena to San Jose, California?

    Currently, July is the cheapest month in which you can book a flight from Helena to San Jose, California (average of $41). Flying from Helena to San Jose, California in May is currently the most expensive (average of $219). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

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Top airline flying from Helena to San Jose

Discover the top airline that operate flights from Helena to San Jose. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated November 13, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$336Average$418FlexibilityNo cancel feeOn-timeN/A

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