HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Helena

$299+ Cheap flights from San Jose, CA to Helena (SJC - HLN)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 4/23. Fares are subject to change and may not be available on all flights or dates of travel.
SJC — HLN
Nov 29 — Dec 61
Sat 11/29
Sat 12/6
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from San Jose to Helena with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

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 October 30, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

Expedia
3 stars

Round-trip from

$299
(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

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 October 30, 2025.

This Alaska Airlines deal was found by Cheapflights users on 10/29. 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 12/118:00 amSJC - HLN
1 stop8h 51mAlaska Airlines
Sat 1/36:32 pmHLN - SJC
1 stop6h 27mAlaska Airlines
Deal found 10/29$540
This Alaska Airlines deal was found by Cheapflights users on 10/30. 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 11/158:10 amSJC - HLN
1 stop8h 26mAlaska Airlines
Wed 11/196:13 pmHLN - SJC
1 stop25h 40mAlaska Airlines
Deal found 10/30$541
This Delta deal was found by Cheapflights users on 10/30. 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 11/225:45 amSJC - HLN
1 stop5h 41mDelta
Sat 11/295:30 amHLN - SJC
1 stop4h 30mDelta
Deal found 10/30$830
This Alaska Airlines deal was found by Cheapflights users on 10/29. 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 11/227:55 pmSJC - HLN
2 stops21h 57mAlaska Airlines
Sat 11/297:32 pmHLN - SJC
1 stop5h 26mAlaska Airlines
Deal found 10/29$849

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 October 30, 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 4/23

5:45 am-12:23 pm

1 stop5h 38m

Helena

Sun 4/26

5:45 am-8:57 am

1 stop4h 12m

$299

San JoseHelena

SJC - HLN

SJCHLN

San Jose

Thu 12/11

8:00 am-5:51 pm

1 stop8h 51m

Helena

Sat 1/3

6:32 pm-11:59 pm

1 stop6h 27m

$540

San JoseHelena

SJC - HLN

SJCHLN

San Jose

Sat 11/15

8:10 am-5:36 pm

1 stop8h 26m

Helena

Wed 11/19

6:13 pm-6:53 pm

1 stop25h 40m

$541

San JoseHelena

SJC - HLN

SJCHLN

San Jose

Thu 4/23

10:05 am-3:38 pm

1 stop4h 33m

Helena

Sun 4/26

4:10 pm-10:59 pm

2 stops7h 49m

$591

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/30

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 October.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star

*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 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, 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 $254). 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?

    Delta and Alaska Airlines can get you from San Jose, California to Helena in just under 5h 38m. Your travel time can differ by up to 3h 13m. 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 $254). 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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for San Jose to Helena

See prices for flight routes from nearby airports that may be better suited for you.
Los Angeles to Bozeman flights
San Francisco to Bozeman flights
Santa Ana to Bozeman flights
Ontario to Bozeman flights
San Francisco to Kalispell flights
San Diego to Bozeman flights
Sacramento to Missoula flights
Los Angeles to Missoula flights
Burbank to Bozeman flights
Los Angeles to Kalispell flights
Ontario to Kalispell flights
San Francisco to Missoula flights
San Diego to Kalispell flights
Burbank to Kalispell flights
Los Angeles to Helena flights
Ontario to Billings flights
San Diego to Missoula flights
Oakland to Kalispell flights
Sacramento to Bozeman flights
San Jose to Bozeman flights
Oakland to Bozeman flights
Santa Ana to Kalispell flights
Santa Ana to Missoula flights
San Jose to Kalispell flights
San Jose to Missoula flights
Las Vegas to Bozeman flights
Sacramento to Kalispell flights
Ontario to Missoula flights
Las Vegas to Kalispell flights
Los Angeles to Billings flights
San Luis Obispo to Bozeman flights
San Francisco to Billings flights
Sacramento to Billings flights
Reno to Bozeman flights
San Diego to Billings flights
Ontario to Helena flights
Burbank to Missoula flights
Santa Barbara to Kalispell flights
Long Beach to Bozeman flights
Palm Springs to Missoula flights
Santa Barbara to Bozeman flights
Oakland to Missoula flights
Las Vegas to Great Falls flights
Palm Springs to Billings flights
Palm Springs to Bozeman flights
Santa Ana to Helena flights
Reno to Billings flights
Long Beach to Kalispell flights
Burbank to Helena flights
Los Angeles to Great Falls flights

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.