San Jose

$678+ Cheap flights from Helena to San Jose (HLN - SJC)

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 9/1. Fares are subject to change and may not be available on all flights or dates of travel.
HLN — SJC
août 23 — août 301
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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 août 18, 2025.

Round-trip from

$678
(United Airlines)
From Helena to San Jose

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 août 18, 2025.

This United Airlines deal was found by Cheapflights users on 8/17. 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.
lun. 9/16:30 amHLN - SJC
1 stop11h 47mUnited Airlines
ven. 9/56:20 pmSJC - HLN
1 stop26h 54mUnited Airlines
Deal found 8/17$678
This United Airlines deal was found by Cheapflights users on 8/18. 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.
jeu. 8/286:30 amHLN - SJC
1 stop28h 21mUnited Airlines
dim. 8/318:45 amSJC - HLN
1 stop27h 45mUnited Airlines
Deal found 8/18$725
This Alaska Airlines deal was found by Cheapflights users on 8/17. 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.
lun. 9/14:02 pmHLN - SJC
2 stops20h 01mAlaska Airlines
ven. 9/58:00 amSJC - HLN
1 stop6h 21mAlaska Airlines
Deal found 8/17$796
This United deal was found by Cheapflights users on 8/18. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jeu. 8/286:30 amHLN - SJC
1 stop8h 04mMultiple Airlines
dim. 8/3110:35 amSJC - HLN
2 stops9h 36mMultiple Airlines
Deal found 8/18$963

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 août 18, 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

lun. 9/1

6:30 am-5:17 pm

1 stop11h 47m

San Jose

ven. 9/5

6:20 pm-10:14 pm

1 stop26h 54m

$678

HelenaSan Jose

HLN - SJC

HLNSJC

Helena

jeu. 8/28

6:30 am-9:51 am

1 stop28h 21m

San Jose

dim. 8/31

8:45 am-1:30 pm

1 stop27h 45m

$725

HelenaSan Jose

HLN - SJC

HLNSJC

Helena

lun. 9/1

4:02 pm-11:03 am

2 stops20h 01m

San Jose

ven. 9/5

8:00 am-3:21 pm

1 stop6h 21m

$796

HelenaSan Jose

HLN - SJC

HLNSJC

Helena

jeu. 8/28

6:30 am-1:34 pm

1 stop8h 04m

San Jose

dim. 8/31

10:35 am-9:11 pm

2 stops9h 36m

$963

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/17

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?

Currently, September is the cheapest month in which you can book a flight from Helena to San Jose (average of $255). Flying from Helena to San Jose in June is currently the most expensive (average of $359). 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 août 18, 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.
8.0
Very good

Entertainment

7.9

Food

7.3

Comfort

7.9

Boarding

8.2

Crew

8.5

Overall

8.0

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
8.0
Very good
8.0
Very good

Entertainment

7.9

Food

7.3

Comfort

7.9

Boarding

8.2

Crew

8.5

Overall

8.0

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?

    For as low as $678, United Airlines can have you in San Jose from Helena in 11h 47m. There are 816 mi between Helena and San Jose. Both multi-stop and nonstop flights can be found to your destination and back.

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

    Our cheapest airline available from Helena to San Jose is Delta. Our recent data shows that you can find tickets from as low as $250 on this airline.

  • 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?

    Currently, September is the cheapest month in which you can book a flight from Helena to San Jose (average of $255). Flying from Helena to San Jose in June is currently the most expensive (average of $359). 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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Alternative routes for Helena to San Jose

See prices for flight routes from nearby airports that may be better suited for you.

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 août 18, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$250Average$418FlexibilityNo cancel feeOn-timeN/A

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