$231+ 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 9/25. Fares are subject to change and may not be available on all flights or dates of travel.
SJC — HLN
Sep 7 — Sep 141
Round-trip
1 adult, Economy
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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
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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 August 8, 2026.
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 August 8, 2026.
This Alaska Airlines deal was found by Cheapflights users on 8/3. 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 10/2710:37 am -
1 stop5h 12m
Sat 10/315:26 pm -
1 stop6h 33m
Deal found 8/3![Alaska Airlines logo]()
$424
This Alaska Airlines deal was found by Cheapflights users on 8/6. 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 10/248:02 am -
1 stop7h 47m
Wed 10/285:26 pm -
1 stop27h 34m
Deal found 8/6![Alaska Airlines logo]()
$452
This Alaska Airlines deal was found by Cheapflights users on 8/7. 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.
Sun 8/308:02 am -
1 stop7h 32m
Fri 9/45:11 pm -
1 stop6h 46m
Deal found 8/7![Alaska Airlines logo]()
$461
This Delta deal was found by Cheapflights users on 8/7. 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.
Sun 8/3011:38 am -
2 stops9h 52m
Fri 9/412:55 pm -
1 stop6h 34m
Deal found 8/7![Delta logo]()
$466
This Alaska Airlines deal was found by Cheapflights users on 8/7. 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.
Fri 9/46:17 am -
1 stop9h 17m
Fri 9/115:18 pm -
1 stop6h 39m
Deal found 8/7![Alaska Airlines logo]()
$627
Best flights from San Jose to HelenaDiscover carefully curated flight deals from San Jose to Helena that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated August 8, 2026.
Discover carefully curated flight deals from San Jose to Helena that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated August 8, 2026.
This Alaska Airlines deal was found by Cheapflights users on 8/3. 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 10/2710:37 am -
1 stop5h 12m
Sat 10/315:26 pm -
1 stop6h 33m
Deal found 8/3![Alaska Airlines logo]()
$424
This Delta deal was found by Cheapflights users on 8/7. 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.
Sun 8/3011:38 am -
2 stops9h 52m
Fri 9/412:55 pm -
1 stop6h 34m
Deal found 8/7![Delta logo]()
$466
This Alaska Airlines deal was found by Cheapflights users on 8/7. 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.
Sat 10/248:02 am -
1 stop7h 47m
Wed 10/285:26 pm -
1 stop27h 34m
Deal found 8/7![Alaska Airlines logo]()
$452
Last-minute flights from San Jose to HelenaDiscover last-minute flight deals from San Jose to Helena. Data last updated August 8, 2026 and is based on user searches.
Discover last-minute flight deals from San Jose to Helena. Data last updated August 8, 2026 and is based on user searches.
This Delta deal was found by Cheapflights users on 8/3. 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.
Thu 8/136:00 am -
1 stop5h 15m
Mon 8/1712:55 pm -
1 stop4h 11m
Deal found 8/3![Delta logo]()
$829
This United Airlines deal was found by Cheapflights users on 8/3. 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 8/1912:51 pm -
1 stop7h 39m
Sun 8/236:15 am -
1 stop7h 53m
Deal found 8/3![United Airlines logo]()
$776
This Alaska Airlines deal was found by Cheapflights users on 8/7. 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.
Sun 8/308:02 am -
1 stop7h 32m
Fri 9/45:11 pm -
1 stop6h 46m
Deal found 8/7![Alaska Airlines logo]()
$461
This Delta deal was found by Cheapflights users on 8/7. 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.
Sun 8/3011:38 am -
2 stops9h 52m
Fri 9/412:55 pm -
1 stop6h 34m
Deal found 8/7![Delta logo]()
$466
This Alaska Airlines deal was found by Cheapflights users on 8/7. 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.
Fri 9/46:17 am -
1 stop9h 17m
Fri 9/115:18 pm -
1 stop6h 39m
Deal found 8/7![Alaska Airlines logo]()
$627
This Delta deal was found by Cheapflights users on 8/5. 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.
Fri 9/115:13 pm -
1 stop4h 11m
Mon 9/1412:57 pm -
2 stops7h 54m
Deal found 8/5![Delta logo]()
$675
This Alaska Airlines deal was found by Cheapflights users on 8/5. 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 9/112:13 pm -
1 stop25h 28m
Mon 9/145:18 pm -
1 stop27h 42m
Deal found 8/5![Alaska Airlines logo]()
$699
One-way flights from San Jose to HelenaSearch for one-way flight options from San Jose to Helena. Find affordable one-way fares based on user searches. Data last updated August 8, 2026.
Search for one-way flight options from San Jose to Helena. Find affordable one-way fares based on user searches. Data last updated August 8, 2026.
This Delta deal was found by Cheapflights users on 8/6. 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.
Fri 9/255:13 pm -
1 stop4h 11m
Deal found 8/6![Delta logo]()
$231
This Alaska Airlines deal was found by Cheapflights users on 8/6. 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 9/267:02 am -
2 stops8h 39m
Deal found 8/6![Alaska Airlines logo]()
$287
This Alaska Airlines deal was found by Cheapflights users on 8/7. 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.
Mon 11/301:28 pm -
1 stop25h 03m
Deal found 8/7![Alaska Airlines logo]()
$375
This Delta deal was found by Cheapflights users on 8/7. 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 11/285:59 am -
1 stop5h 23m
Deal found 8/7![Delta logo]()
$410
This Delta deal was found by Cheapflights users on 8/7. 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.
Sun 11/295:59 am -
1 stop5h 23m
Deal found 8/7![Delta logo]()
$540
This Alaska Airlines deal was found by Cheapflights users on 8/7. 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.
Sat 11/287:08 am -
2 stops8h 24m
Deal found 8/7![Alaska Airlines logo]()
$555
This Alaska Airlines deal was found by Cheapflights users on 8/7. 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.
Sun 11/296:58 pm -
2 stops20h 34m
Deal found 8/7![Alaska Airlines logo]()
$642
This Alaska Airlines deal was found by Cheapflights users on 8/7. 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 8/135:28 pm -
1 stop22h 04m
Deal found 8/7![Alaska Airlines logo]()
$717
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 August 8, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $395 (Alaska Airlines) |
One-way from | $231 (Delta) |
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 August 8, 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
Cheapest round-trip
Quickest round-trip
San JoseHelena
SJC San Jose - HLN Helena
SJCHLN
San Jose
Tue 10/27
10:37 am-4:49 pm
1 stop5h 12m
Helena
Sat 10/31
5:26 pm-10:59 pm
1 stop6h 33m
$424
San JoseHelena
SJC San Jose - HLN Helena
SJCHLN
San Jose
Sat 10/24
8:02 am-4:49 pm
1 stop7h 47m
Helena
Wed 10/28
5:26 pm-8:00 pm
1 stop27h 34m
$452
San JoseHelena
SJC San Jose - HLN Helena
SJCHLN
San Jose
Sun 8/30
11:38 am-10:30 pm
2 stops9h 52m
Helena
Fri 9/4
12:55 pm-6:29 pm
1 stop6h 34m
$466
Cheapest one-way
Quickest one-way
San JoseHelena
SJC San Jose - HLN Helena
SJCHLN
San Jose
Fri 9/25
5:13 pm-10:24 pm
1 stop4h 11m
$231
San JoseHelena
SJC San Jose - HLN Helena
SJCHLN
San Jose
Sat 9/26
7:02 am-4:41 pm
2 stops8h 39m
$287
San JoseHelena
SJC San Jose - HLN Helena
SJCHLN
San Jose
Mon 11/30
6:58 pm-3:31 pm
2 stops19h 33m
$402
San JoseHelena
SJC San Jose - HLN Helena
SJCHLN
San Jose
Sat 11/28
5:59 am-12:22 pm
1 stop5h 23m
$410
San JoseHelena
SJC San Jose - HLN Helena
SJCHLN
San Jose
Sat 11/28
7:08 am-4:32 pm
2 stops8h 24m
$555
San JoseHelena
SJC San Jose - HLN Helena
SJCHLN
San Jose
Sun 11/29
6:58 pm-4:32 pm
2 stops20h 34m
$642
San JoseHelena
SJC San Jose - HLN Helena
SJCHLN
San Jose
Thu 8/13
5:28 pm-4:32 pm
1 stop22h 04m
$717
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 August.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars |
- 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.
SJC-HLN
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.
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.
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