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Helena

$126+ Cheap flights from San Jose, CA 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 4/7. Fares are subject to change and may not be available on all flights or dates of travel.
SJC — HLN
Apr 11 — Apr 181
Sat 4/11
Sat 4/18
1 adult, Economy
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Cheap 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 March 12, 2026.

This Alaska Airlines deal was found by Cheapflights users on 3/10. 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 5/27:43 pm
SJC
-
HLN
1 stop21h 02m
Alaska Airlines
Wed 5/66:22 pm
HLN
-
SJC
1 stop5h 13m
Alaska Airlines
Deal found 3/10$251
This Alaska Airlines deal was found by Cheapflights users on 3/10. 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.
Tue 4/287:43 pm
SJC
-
HLN
1 stop21h 02m
Alaska Airlines
Tue 5/56:22 pm
HLN
-
SJC
1 stop5h 13m
Alaska Airlines
Deal found 3/10$267
This Alaska Airlines deal was found by Cheapflights users on 3/10. 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.
Fri 5/16:15 am
SJC
-
HLN
1 stop10h 30m
Alaska Airlines
Mon 5/46:22 pm
HLN
-
SJC
1 stop25h 27m
Alaska Airlines
Deal found 3/10$283
This Delta deal was found by Cheapflights users on 3/7. 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.
Sat 8/155:00 pm
SJC
-
HLN
1 stop4h 34m
Delta
Tue 8/2512:50 pm
HLN
-
SJC
1 stop4h 26m
Delta
Deal found 3/7$309
This Delta deal was found by Cheapflights users on 3/12. 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.
Wed 5/135:50 am
SJC
-
HLN
1 stop5h 33m
Delta
Mon 5/181:03 pm
HLN
-
SJC
1 stop4h 06m
Delta
Deal found 3/12$325
This Delta deal was found by Cheapflights users on 3/11. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 6/135:00 pm
SJC
-
HLN
1 stop4h 34m
Delta
Wed 8/55:45 am
HLN
-
SJC
1 stop4h 12m
Delta
Deal found 3/11$329
This Alaska Airlines deal was found by Cheapflights users on 3/7. 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 8/2010:03 am
SJC
-
HLN
1 stop4h 28m
Alaska Airlines
Tue 8/254:08 pm
HLN
-
SJC
1 stop7h 04m
Alaska Airlines
Deal found 3/7$334
This Alaska Airlines deal was found by Cheapflights users on 3/8. 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.
Tue 4/287:43 pm
SJC
-
HLN
1 stop21h 02m
Alaska Airlines
Sat 5/26:22 pm
HLN
-
SJC
2 stops40h 22m
Alaska Airlines
Deal found 3/8$342

Find 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 March 12, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$251
(Alaska Airlines)

One-way from

$126
(Delta)
Provider with most accurate pricing for San Jose-Helena flight deals.
Search Deals
Provider most trusted by Cheapflights users for San Jose-Helena flights.
Search Deals
From San Jose to Helena
Search Deals
One-way flight from San Jose to Helena
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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 March 12, 2026.
Use the filters below to find and compare flights from San Jose to Helena that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

San JoseHelena

SJC - HLN

SJCHLN

San Jose

Sat 5/2

9:42 pm-5:45 pm

1 stop19h 03m

Helena

Wed 5/6

6:22 pm-10:35 pm

1 stop5h 13m

$251

San JoseHelena

SJC - HLN

SJCHLN

San Jose

Wed 8/19

7:03 am-3:31 pm

1 stop7h 28m

Helena

Fri 8/28

4:08 pm-10:12 pm

1 stop7h 04m

$309

San JoseHelena

SJC - HLN

SJCHLN

San Jose

Wed 5/13

5:50 am-12:23 pm

1 stop5h 33m

Helena

Mon 5/18

1:03 pm-4:09 pm

1 stop4h 06m

$325
Quickest round-trip

San JoseHelena

SJC - HLN

SJCHLN

San Jose

Sun 7/12

5:00 pm-10:34 pm

1 stop4h 34m

Helena

Tue 7/14

12:50 pm-4:16 pm

1 stop4h 26m

$334

San JoseHelena

SJC - HLN

SJCHLN

San Jose

Tue 4/28

7:43 pm-5:45 pm

1 stop21h 02m

Helena

Sat 5/2

6:22 pm-9:44 am

2 stops40h 22m

$342
Cheapest one-way
Quickest one-way

San JoseHelena

SJC - HLN

SJCHLN

San Jose

Tue 4/7

4:50 pm-10:30 pm

1 stop4h 40m

$126

San JoseHelena

SJC - HLN

SJCHLN

San Jose

Tue 4/7

7:22 pm-5:45 pm

2 stops21h 23m

$198

San JoseHelena

SJC - HLN

SJCHLN

San Jose

Wed 4/1

10:22 am-5:45 pm

1 stop6h 23m

$300

San JoseHelena

SJC - HLN

SJCHLN

San Jose

Thu 3/26

6:15 am-5:45 pm

1 stop10h 30m

$367

San JoseHelena

SJC - HLN

SJCHLN

San Jose

Tue 4/7

8:39 pm-5:45 pm

3 stops44h 06m

$515

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/7

Sorted by cheapest first

Compare providers for flights from San Jose to Helena

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from San Jose to Helena in March.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on San Jose, California-Helena flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on San Jose, California-Helena flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from San Jose, California-Helena flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on San Jose, California-Helena flights, Cheapflights users trust FlightHub the most. FlightHub 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, California-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, California to Helena?

Currently, August is the cheapest month in which you can book a flight from San Jose, California to Helena (average of $44). Flying from San Jose, California to Helena in December is currently the most expensive (average of $268). 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.

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.

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

    Alaska Airlines and Delta can get you from San Jose, California to Helena in just under 5h 33m. Your travel time can differ by up to 13h 30m. The distance between San Jose, California and Helena is about 816 mi. Both multi-stop and nonstop flights can be found to your destination and back.

  • 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, California to Helena?

    Currently, August is the cheapest month in which you can book a flight from San Jose, California to Helena (average of $44). Flying from San Jose, California to Helena in December is currently the most expensive (average of $268). 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.

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