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Helena

$175+ Cheap flights from San Jose to Helena (SJC - HLN)

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 7/19. Fares are subject to change and may not be available on all flights or dates of travel.
SJC — HLN
Jun 2 — Jun 91
Mon 6/2
Mon 6/9
1 adult, Economy
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Cheap flight deals from San Jose to Helena

Discover tips and strategies to find the most affordable flight options for your journey from San Jose (SJC) to Helena (HLN). 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 May 28, 2025.

Most accurate provider

Expedia
1 star

Most trusted provider

Expedia
3 stars

Round-trip from

$344
(Alaska Airlines)

One-way from

$175
(Delta)
Provider with most accurate pricing for San Jose-Helena flight deals.
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Provider most trusted by Cheapflights users for San Jose-Helena flights.
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From San Jose to Helena
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One-way flight from San Jose to Helena
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Find flight deals from San Jose to Helena

Cheapest flights from San Jose to Helena
Explore the most affordable flight options available from San Jose to Helena. Find the lowest fares from popular airlines and budget airlines, with prices last updated on May 28, 2025.

This Alaska Airlines deal was found by Cheapflights users on 5/28. 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.
Thu 8/218:00 amSJC - HLN
1 stop6h 21mAlaska Airlines
Sun 8/244:02 pmHLN - SJC
1 stop20h 55mAlaska Airlines
Deal found 5/28$344
This Delta deal was found by Cheapflights users on 5/28. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/244:59 pmSJC - HLN
1 stop4h 59mDelta
Fri 7/45:44 amHLN - SJC
1 stop7h 10mDelta
Deal found 5/28$349
This United Airlines deal was found by Cheapflights users on 5/28. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/187:00 amSJC - HLN
1 stop6h 02mUnited Airlines
Thu 8/212:30 pmHLN - SJC
1 stop7h 48mUnited Airlines
Deal found 5/28$453

Cheapflights Fare Finder

Customize your flight search to find flights from San Jose to Helena 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 May 28, 2025.
Use the filters below to find and compare flights from San Jose to Helena that are best for you.

Fly from

San Jose

Fly to

Helena

Route

Depart

Return

Price

San JoseHelena

SJC - HLN

SJCHLN

San Jose

Thu 8/21

8:00 am-3:21 pm

1 stop6h 21m

Helena

Sun 8/24

4:02 pm-11:57 am

1 stop20h 55m

$344

San JoseHelena

SJC - HLN

SJCHLN

San Jose

Tue 6/24

4:59 pm-10:58 pm

1 stop4h 59m

Helena

Wed 7/2

5:44 am-8:59 am

1 stop4h 15m

$349

San JoseHelena

SJC - HLN

SJCHLN

San Jose

Wed 6/18

7:00 am-2:02 pm

1 stop6h 02m

Helena

Thu 8/21

2:30 pm-9:18 pm

1 stop7h 48m

$453

San JoseHelena

SJC - HLN

SJCHLN

San Jose

Sat 7/19

4:59 pm-10:56 pm

1 stop4h 57m

$175

San JoseHelena

SJC - HLN

SJCHLN

San Jose

Mon 7/21

7:57 pm-3:31 pm

2 stops18h 34m

$346

Flights are sorted by cheapest round-trip flights first.

Deals found on 5/27

  • Most accurate provider: When it comes to deals on San Jose-Helena flights, users find the pricing of Expedia to be most consistent on Cheapflights vs. Expedia Users can find the same prices on San Jose-Helena flight deals on Cheapflights vs. Expedia <90% of the time. Price accuracy is based on data collected from San Jose-Helena flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on San Jose-Helena flights, Cheapflights users trust Expedia the most. Expedia has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for San Jose-Helena flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from San Jose to Helena

Have a flexible travel schedule? Discover the best time to fly to Helena from San Jose 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 San Jose to Helena

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

Currently, February is the cheapest month in which you can book a flight from San Jose to Helena (average of $353). Flying from San Jose to Helena in July is currently the most expensive (average of $564). 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.

Rainfall in Helena by month

Plan your trip to Helena by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Helena ranges from 0.3 - 2.1 inches per month. June is typically the wettest month, when rainfall can reach 2.1 in. February is typically the driest time to visit Helena when rainfall is around 0.3 in.

Temperature in Helena by month

Plan your trip to Helena by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Helena, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 69.8 F. Travelers looking to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 21.2 F).

Reviews of airlines servicing Helena

Get insights into the airlines that provide service to Helena. 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 Helena. Reviews last updated May 28, 2025.
Alaska Airlines
8.0
Very good
10,000 reviews

Overall

8.0

Boarding

8.1

Food

7.1

Comfort

7.9

Crew

8.5

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Alaska Airlines
8.0
Very good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Overall

8.0

Boarding

8.1

Food

7.1

Comfort

7.9

Crew

8.5

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Delta
8.0
Very good
7,957 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Overall

8.0

Boarding

8.1

Food

7.1

Comfort

7.9

Crew

8.5

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
United Airlines
7.4
Good
8,756 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Overall

8.0

Boarding

8.1

Food

7.1

Comfort

7.9

Crew

8.5

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.

Related info for your journey

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

  • What are the cheapest airlines flying from San Jose to Helena round-trip?

    Our cheapest airline available from San Jose to Helena is Alaska Airlines. Our recent data shows that you can find tickets from as low as $344 on this airline. Additional options worth looking into are Delta and United Airlines, starting at $349 and $453 round-trip.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from San Jose to Helena 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 San Jose to Helena?

    Currently, February is the cheapest month in which you can book a flight from San Jose to Helena (average of $353). Flying from San Jose to Helena in July is currently the most expensive (average of $564). 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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