$373+ 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 11/12. Fares are subject to change and may not be available on all flights or dates of travel.
SJC — HLN
Sep 16 — Sep 231
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 17, 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 17, 2026.
This Alaska Airlines deal was found by Cheapflights users on 8/14. 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 11/126:17 am -
1 stop8h 47m
Sat 11/144:41 pm -
1 stop5h 02m
Deal found 8/14![Alaska Airlines logo]()
$373
This Alaska Airlines deal was found by Cheapflights users on 8/14. 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 11/126:17 am -
1 stop8h 47m
Sun 11/154:41 pm -
1 stop25h 22m
Deal found 8/14![Alaska Airlines logo]()
$383
This Alaska Airlines deal was found by Cheapflights users on 8/14. 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 stop23h 26m
Deal found 8/14![Alaska Airlines logo]()
$412
This Delta deal was found by Cheapflights users on 8/14. 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 11/125:59 am -
1 stop5h 23m
Sat 11/147:00 am -
2 stops11h 05m
Deal found 8/14![Delta logo]()
$442
This Delta deal was found by Cheapflights users on 8/14. 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 11/132:57 pm -
2 stops6h 29m
Sat 11/141:04 pm -
2 stops7h 48m
Deal found 8/14![Delta logo]()
$447
This Alaska Airlines deal was found by Cheapflights users on 8/16. 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 10/2010:37 am -
1 stop5h 12m
Sat 10/245:26 pm -
1 stop6h 33m
Deal found 8/16![Alaska Airlines logo]()
$452
This Delta deal was found by Cheapflights users on 8/14. 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 11/135:59 am -
1 stop5h 23m
Sun 11/157:00 am -
1 stop6h 31m
Deal found 8/14![Delta logo]()
$461
This Delta deal was found by Cheapflights users on 8/14. 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 11/122:57 pm -
2 stops6h 29m
Sun 11/157:00 am -
1 stop6h 31m
Deal found 8/14![Delta logo]()
$466
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 17, 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 17, 2026.
This Alaska Airlines deal was found by Cheapflights users on 8/14. 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 stop23h 26m
Deal found 8/14![Alaska Airlines logo]()
$412
This Delta deal was found by Cheapflights users on 8/14. 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 11/125:59 am -
1 stop5h 23m
Sat 11/147:00 am -
2 stops11h 05m
Deal found 8/14![Delta logo]()
$442
This United Airlines deal was found by Cheapflights users on 8/15. 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.
Sun 8/3012:51 pm -
1 stop7h 39m
Thu 9/36:15 am -
1 stop7h 53m
Deal found 8/15![United Airlines logo]()
$713
This Alaska Airlines deal was found by Cheapflights users on 8/16. 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 10/2010:37 am -
1 stop5h 12m
Sat 10/245:26 pm -
1 stop6h 33m
Deal found 8/16![Alaska Airlines logo]()
$452
This Delta deal was found by Cheapflights users on 8/14. 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 11/122:57 pm -
2 stops6h 29m
Sun 11/157:00 am -
1 stop6h 31m
Deal found 8/14![Delta logo]()
$466
This Delta deal was found by Cheapflights users on 8/13. 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 11/215:59 am -
1 stop5h 23m
Tue 11/241:04 pm -
2 stops11h 01m
Deal found 8/13![Delta logo]()
$535
This Alaska Airlines deal was found by Cheapflights users on 8/13. 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 8/288:02 am -
1 stop7h 32m
Tue 9/15:11 pm -
1 stop6h 46m
Deal found 8/13![Alaska Airlines logo]()
$716
Last-minute flights from San Jose to HelenaDiscover last-minute flight deals from San Jose to Helena. Data last updated August 17, 2026 and is based on user searches.
Discover last-minute flight deals from San Jose to Helena. Data last updated August 17, 2026 and is based on user searches.
This Delta deal was found by Cheapflights users on 8/13. 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 8/285:10 pm -
1 stop4h 20m
Tue 9/15:40 am -
1 stop4h 14m
Deal found 8/13![Delta logo]()
$713
This Alaska Airlines deal was found by Cheapflights users on 8/13. 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 8/288:02 am -
1 stop7h 32m
Tue 9/15:11 pm -
1 stop6h 46m
Deal found 8/13![Alaska Airlines logo]()
$716
This Alaska Airlines deal was found by Cheapflights users on 8/14. 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.
Wed 9/910:00 am -
1 stop5h 41m
Mon 9/145:18 pm -
1 stop26h 27m
Deal found 8/14![Alaska Airlines logo]()
$532
This Delta deal was found by Cheapflights users on 8/14. 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 9/96:00 am -
1 stop5h 17m
Sun 9/137:15 am -
1 stop17h 25m
Deal found 8/14![Delta logo]()
$712
This Alaska Airlines deal was found by Cheapflights users on 8/14. 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 9/102:06 pm -
1 stop25h 35m
Mon 9/145:18 pm -
1 stop26h 27m
Deal found 8/14![Alaska Airlines logo]()
$643
This Delta deal was found by Cheapflights users on 8/14. 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 9/107:00 am -
2 stops14h 24m
Sun 9/137:15 am -
1 stop17h 25m
Deal found 8/14![Delta logo]()
$800
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 17, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $373 (Alaska Airlines) |
One-way from | $357 (Alaska Airlines) |
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 17, 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
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-3:52 pm
1 stop23h 26m
$412
San JoseHelena
SJC San Jose - HLN Helena
SJCHLN
San Jose
Thu 11/12
5:59 am-12:22 pm
1 stop5h 23m
Helena
Sat 11/14
7:00 am-5:05 pm
2 stops11h 05m
$442
Quickest round-trip
San JoseHelena
SJC San Jose - HLN Helena
SJCHLN
San Jose
Tue 10/20
10:37 am-4:49 pm
1 stop5h 12m
Helena
Sat 10/24
5:26 pm-10:59 pm
1 stop6h 33m
$452
San JoseHelena
SJC San Jose - HLN Helena
SJCHLN
San Jose
Thu 11/12
2:57 pm-10:26 pm
2 stops6h 29m
Helena
Sun 11/15
7:00 am-12:31 pm
1 stop6h 31m
$466
San JoseHelena
SJC San Jose - HLN Helena
SJCHLN
San Jose
Sat 11/21
5:59 am-12:22 pm
1 stop5h 23m
Helena
Tue 11/24
1:04 pm-11:05 pm
2 stops11h 01m
$535
San JoseHelena
SJC San Jose - HLN Helena
SJCHLN
San Jose
Sun 8/30
12:51 pm-9:30 pm
1 stop7h 39m
Helena
Thu 9/3
6:15 am-1:08 pm
1 stop7h 53m
$713
San JoseHelena
SJC San Jose - HLN Helena
SJCHLN
San Jose
Fri 8/28
8:02 am-4:34 pm
1 stop7h 32m
Helena
Tue 9/1
5:11 pm-10:57 pm
1 stop6h 46m
$716
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
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