$174+ 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 9/7. Fares are subject to change and may not be available on all flights or dates of travel.
SJC — HLN
Apr 2 — Apr 91
1 adult, Economy
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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 March 28, 2025.
Most accurate provider | Expedia 1 star |
|---|---|
Most trusted provider | Expedia 3 stars |
Round-trip from | $273 (Alaska Airlines) |
One-way from | $174 (Alaska Airlines) |
Find flight deals from San Jose to Helena
Cheapest flights from San Jose to HelenaExplore 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 28, 2025.
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 28, 2025.
This Alaska Airlines deal was found by Cheapflights users on 3/28. 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.
Sat 5/310:14 amSJC - HLN
1 stop7h 35mAlaska Airlines
Tue 5/67:29 pmHLN - SJC
1 stop14h 45mAlaska Airlines
Deal found 3/28![Alaska Airlines logo]()
$273
This Delta deal was found by Cheapflights users on 3/28. 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.
Wed 4/305:45 amSJC - HLN
1 stop5h 53mDelta
Sun 5/45:45 amHLN - SJC
1 stop4h 23mDelta
Deal found 3/28![Delta logo]()
$312
This United Airlines deal was found by Cheapflights users on 3/27. 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.
Fri 9/196:39 pmSJC - HLN
1 stop20h 25mUnited Airlines
Mon 9/222:04 pmHLN - SJC
1 stop7h 39mUnited Airlines
Deal found 3/27![United Airlines logo]()
$507
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 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
Sat 5/3
10:14 am-6:49 pm
1 stop7h 35m
Helena
Tue 5/6
7:29 pm-9:14 am
1 stop14h 45m
$273
San JoseHelena
SJC - HLN
SJCHLN
San Jose
Wed 4/30
5:45 am-12:38 pm
1 stop5h 53m
Helena
Sun 5/4
5:45 am-9:08 am
1 stop4h 23m
$312
San JoseHelena
SJC - HLN
SJCHLN
San Jose
Fri 9/19
6:39 pm-4:04 pm
1 stop20h 25m
Helena
Mon 9/22
2:04 pm-8:43 pm
1 stop7h 39m
$507
San JoseHelena
SJC - HLN
SJCHLN
San Jose
Sun 9/7
8:20 am-3:34 pm
1 stop6h 14m
$174
- 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 $615). 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 March 28, 2025.
Crew
8.5
Food
7.1
Overall
8.0
Entertainment
7.1
Comfort
7.9
Boarding
8.2
Reviews
1 / 20
10.0
ExcellentCheri,Jan 2025
FAT - SEA
Crew
8.5
Food
7.1
Overall
8.0
Entertainment
7.1
Comfort
7.9
Boarding
8.2
Reviews
1 / 20
10.0
ExcellentCheri,Jan 2025
FAT - SEA
Crew
8.5
Food
7.1
Overall
8.0
Entertainment
7.1
Comfort
7.9
Boarding
8.2
Reviews
1 / 20
10.0
ExcellentCheri,Jan 2025
FAT - SEA
Crew
8.5
Food
7.1
Overall
8.0
Entertainment
7.1
Comfort
7.9
Boarding
8.2
Reviews
1 / 20
10.0
ExcellentCheri,Jan 2025
FAT - SEA