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Helena

$168+ 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 11/16. Fares are subject to change and may not be available on all flights or dates of travel.
SJC — HLN
Jul 8 — Jul 151
Tue 7/8
Tue 7/15
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 July 3, 2025.

Round-trip from

$291
(Delta)

One-way from

$168
(Alaska Airlines)
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 July 3, 2025.

This Delta deal was found by Cheapflights users on 7/2. 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 8/54:59 pmSJC - HLN
1 stop4h 48mDelta
Tue 8/121:00 pmHLN - SJC
1 stop4h 01mDelta
Deal found 7/2$291
This Alaska Airlines deal was found by Cheapflights users on 7/1. 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 8/79:46 pmSJC - HLN
1 stop16h 45mAlaska Airlines
Wed 8/134:08 pmHLN - SJC
1 stop5h 43mAlaska Airlines
Deal found 7/1$411
This Hawaiian Airlines deal was found by Cheapflights users on 7/1. 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 Hawaiian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/147:03 amSJC - HLN
1 stop7h 28mHawaiian Airlines
Thu 7/174:09 pmHLN - SJC
1 stop7h 40mHawaiian Airlines
Deal found 7/1$654
This United Airlines deal was found by Cheapflights users on 7/1. 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 7/27:00 amSJC - HLN
1 stop5h 58mUnited Airlines
Sun 7/65:39 pmHLN - SJC
1 stop24h 39mUnited Airlines
Deal found 7/1$1,115

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 July 3, 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

Tue 8/5

4:59 pm-10:47 pm

1 stop4h 48m

Helena

Tue 8/12

1:00 pm-4:01 pm

1 stop4h 01m

$291

San JoseHelena

SJC - HLN

SJCHLN

San Jose

Thu 8/7

9:46 pm-3:31 pm

1 stop16h 45m

Helena

Wed 8/13

4:08 pm-8:51 pm

1 stop5h 43m

$411

San JoseHelena

SJC - HLN

SJCHLN

San Jose

Mon 7/14

7:03 am-3:31 pm

1 stop7h 28m

Helena

Thu 7/17

4:09 pm-10:49 pm

1 stop7h 40m

$654

San JoseHelena

SJC - HLN

SJCHLN

San Jose

Sun 11/16

11:42 am-5:36 pm

1 stop4h 54m

$168

San JoseHelena

SJC - HLN

SJCHLN

San Jose

Sun 11/16

5:45 am-12:24 pm

1 stop5h 39m

$169

San JoseHelena

SJC - HLN

SJCHLN

San Jose

Thu 7/17

1:05 pm-1:58 pm

3 stops23h 53m

$683

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/2

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 $545). 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 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 July 3, 2025.
Get a feel of what it's like to fly with Alaska Airlines, Delta, and Hawaiian Airlines from San Jose to Helena by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
10,000 reviews

Entertainment

7.1

Overall

8.0

Comfort

7.8

Crew

8.5

Boarding

8.1

Food

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

Entertainment

7.1

Overall

8.0

Comfort

7.8

Crew

8.5

Boarding

8.1

Food

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
7,970 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Entertainment

7.1

Overall

8.0

Comfort

7.8

Crew

8.5

Boarding

8.1

Food

7.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Hawaiian Airlines
7.8
Good
2,545 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Entertainment

7.1

Overall

8.0

Comfort

7.8

Crew

8.5

Boarding

8.1

Food

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
8,845 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Entertainment

7.1

Overall

8.0

Comfort

7.8

Crew

8.5

Boarding

8.1

Food

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 Delta. Our recent data shows that you can find tickets from as low as $291 on this airline. Additional options worth looking into are Alaska Airlines and Hawaiian Airlines, starting at $411 and $654 round-trip.

  • What are the cheapest airlines to fly from San Jose to Helena one-way?

    To fly one-way, consider booking your trip with Alaska Airlines, which is currently one of the cheapest options available, starting at $168. Delta flights start at $169 while deals on United Airlines start at $683 one-way.

  • 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 $545). 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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