$198+ 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 9/16. Fares are subject to change and may not be available on all flights or dates of travel.
SJC — HLN
Aug 11 — Aug 181
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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Best
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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 July 12, 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 July 12, 2026.
This Alaska Airlines deal was found by Cheapflights users on 7/11. 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 10/218:00 am
SJC
- HLN
1 stop7h 11m
Alaska Airlines
Sat 10/244:48 pm
HLN
- SJC
1 stop7h 05m
Alaska Airlines
Deal found 7/11![Alaska Airlines logo]()
$343
This Alaska Airlines deal was found by Cheapflights users on 7/9. 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 11/37:43 pm
SJC
- HLN
1 stop19h 21m
Alaska Airlines
Sat 11/74:41 pm
HLN
- SJC
1 stop5h 02m
Alaska Airlines
Deal found 7/9![Alaska Airlines logo]()
$357
This Alaska Airlines deal was found by Cheapflights users on 7/9. 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 10/54:46 pm
SJC
- HLN
1 stop22h 25m
Alaska Airlines
Mon 10/124:48 pm
HLN
- SJC
1 stop26h 12m
Alaska Airlines
Deal found 7/9![Alaska Airlines logo]()
$367
This Delta deal was found by Cheapflights users on 7/9. 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 8/15:01 pm
SJC
- HLN
1 stop4h 38m
Delta
Sun 8/95:40 am
HLN
- SJC
1 stop4h 14m
Delta
Deal found 7/9![Delta logo]()
$431
This Delta deal was found by Cheapflights users on 7/9. 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 8/15:01 pm
SJC
- HLN
1 stop4h 38m
Delta
Thu 8/612:55 pm
HLN
- SJC
2 stops10h 18m
Delta
Deal found 7/9![Delta logo]()
$436
This Delta deal was found by Cheapflights users on 7/9. 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.
Tue 8/42:59 pm
SJC
- HLN
2 stops6h 31m
Delta
Thu 8/612:55 pm
HLN
- SJC
2 stops10h 18m
Delta
Deal found 7/9![Delta logo]()
$441
This Delta deal was found by Cheapflights users on 7/12. 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 9/36:00 am
SJC
- HLN
1 stop5h 15m
Delta
Mon 9/75:40 am
HLN
- SJC
1 stop4h 14m
Delta
Deal found 7/12![Delta logo]()
$463
This Delta deal was found by Cheapflights users on 7/9. 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 7/315:01 pm
SJC
- HLN
1 stop4h 38m
Delta
Thu 8/65:40 am
HLN
- SJC
1 stop4h 14m
Delta
Deal found 7/9![Delta logo]()
$465
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 July 12, 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 July 12, 2026.
This Alaska Airlines deal was found by Cheapflights users on 7/11. 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 10/218:00 am
SJC
- HLN
1 stop7h 11m
Alaska Airlines
Sat 10/244:48 pm
HLN
- SJC
1 stop7h 05m
Alaska Airlines
Deal found 7/11![Alaska Airlines logo]()
$343
This Delta deal was found by Cheapflights users on 7/8. 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 8/15:01 pm
SJC
- HLN
1 stop4h 38m
Delta
Mon 8/312:55 pm
HLN
- SJC
2 stops10h 18m
Delta
Deal found 7/8![Delta logo]()
$436
This Alaska Airlines deal was found by Cheapflights users on 7/8. 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 11/37:43 pm
SJC
- HLN
1 stop19h 21m
Alaska Airlines
Sat 11/74:41 pm
HLN
- SJC
1 stop5h 02m
Alaska Airlines
Deal found 7/8![Alaska Airlines logo]()
$379
This Delta deal was found by Cheapflights users on 7/12. 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 9/36:00 am
SJC
- HLN
1 stop5h 15m
Delta
Mon 9/75:40 am
HLN
- SJC
1 stop4h 14m
Delta
Deal found 7/12![Delta logo]()
$463
This Alaska Airlines deal was found by Cheapflights users on 7/11. 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 12/127:03 am
SJC
- HLN
1 stop7h 28m
Alaska Airlines
Tue 12/154:08 pm
HLN
- SJC
1 stop4h 46m
Alaska Airlines
Deal found 7/11![Alaska Airlines logo]()
$431
This Alaska Airlines deal was found by Cheapflights users on 7/7. 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.
Tue 8/410:19 am
SJC
- HLN
1 stop5h 13m
Alaska Airlines
Fri 8/75:09 pm
HLN
- SJC
1 stop7h 50m
Alaska Airlines
Deal found 7/7![Alaska Airlines logo]()
$480
Last-minute flights from San Jose to HelenaDiscover last-minute flight deals from San Jose to Helena. Data last updated July 12, 2026 and is based on user searches.
Discover last-minute flight deals from San Jose to Helena. Data last updated July 12, 2026 and is based on user searches.
This Delta deal was found by Cheapflights users on 7/9. 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 7/315:01 pm
SJC
- HLN
1 stop4h 38m
Delta
Thu 8/65:40 am
HLN
- SJC
1 stop4h 14m
Delta
Deal found 7/9![Delta logo]()
$465
This Delta deal was found by Cheapflights users on 7/9. 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 7/315:01 pm
SJC
- HLN
1 stop4h 38m
Delta
Fri 8/75:40 am
HLN
- SJC
2 stops6h 03m
Delta
Deal found 7/9![Delta logo]()
$470
This Delta deal was found by Cheapflights users on 7/9. 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 8/15:01 pm
SJC
- HLN
1 stop4h 38m
Delta
Sun 8/95:40 am
HLN
- SJC
1 stop4h 14m
Delta
Deal found 7/9![Delta logo]()
$431
This Delta deal was found by Cheapflights users on 7/9. 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 8/15:01 pm
SJC
- HLN
1 stop4h 38m
Delta
Fri 8/712:55 pm
HLN
- SJC
2 stops10h 18m
Delta
Deal found 7/9![Delta logo]()
$436
This Delta deal was found by Cheapflights users on 7/9. 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.
Tue 8/42:59 pm
SJC
- HLN
2 stops6h 31m
Delta
Fri 8/75:40 am
HLN
- SJC
2 stops6h 03m
Delta
Deal found 7/9![Delta logo]()
$441
This Delta deal was found by Cheapflights users on 7/9. 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.
Tue 8/42:59 pm
SJC
- HLN
2 stops6h 31m
Delta
Sun 8/95:40 am
HLN
- SJC
2 stops6h 03m
Delta
Deal found 7/9![Delta logo]()
$473
This Alaska Airlines deal was found by Cheapflights users on 7/9. 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 8/410:19 am
SJC
- HLN
1 stop5h 13m
Alaska Airlines
Wed 8/55:09 pm
HLN
- SJC
1 stop7h 50m
Alaska Airlines
Deal found 7/9![Alaska Airlines logo]()
$476
This Alaska Airlines deal was found by Cheapflights users on 7/7. 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.
Tue 8/410:19 am
SJC
- HLN
1 stop5h 13m
Alaska Airlines
Fri 8/75:09 pm
HLN
- SJC
1 stop7h 50m
Alaska Airlines
Deal found 7/7![Alaska Airlines logo]()
$480
This Alaska Airlines deal was found by Cheapflights users on 7/9. 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 8/136:17 am
SJC
- HLN
1 stop9h 15m
Alaska Airlines
Thu 8/205:34 pm
HLN
- SJC
1 stop27h 26m
Alaska Airlines
Deal found 7/9![Alaska Airlines logo]()
$471
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 July 12, 2026.
Search for one-way flight options from San Jose to Helena. Find affordable one-way fares based on user searches. Data last updated July 12, 2026.
This Delta deal was found by Cheapflights users on 7/10. 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 9/166:00 am
SJC
- HLN
1 stop5h 17m
Delta
Deal found 7/10![Delta logo]()
$198
This Delta deal was found by Cheapflights users on 7/10. 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.
Tue 9/152:56 pm
SJC
- HLN
2 stops6h 28m
Delta
Deal found 7/10![Delta logo]()
$203
This Alaska Airlines deal was found by Cheapflights users on 7/10. 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 9/147:45 pm
SJC
- HLN
1 stop19h 56m
Alaska Airlines
Deal found 7/10![Alaska Airlines logo]()
$207
This Alaska Airlines deal was found by Cheapflights users on 7/10. 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 9/178:02 am
SJC
- HLN
1 stop7h 39m
Alaska Airlines
Deal found 7/10![Alaska Airlines logo]()
$212
This Delta deal was found by Cheapflights users on 7/8. 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.
Tue 8/116:00 am
SJC
- HLN
1 stop5h 15m
Delta
Deal found 7/8![Delta logo]()
$216
This Delta deal was found by Cheapflights users on 7/10. 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 9/172:56 pm
SJC
- HLN
2 stops6h 28m
Delta
Deal found 7/10![Delta logo]()
$221
This United Airlines deal was found by Cheapflights users on 7/9. 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 9/2312:51 pm
SJC
- HLN
1 stop7h 39m
United Airlines
Deal found 7/9![United Airlines logo]()
$241
This United Airlines deal was found by Cheapflights users on 7/10. 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 9/2012:51 pm
SJC
- HLN
1 stop7h 39m
United Airlines
Deal found 7/10![United Airlines logo]()
$256
This Alaska Airlines deal was found by Cheapflights users on 7/10. 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 9/197:02 am
SJC
- HLN
2 stops8h 39m
Alaska Airlines
Deal found 7/10![Alaska Airlines logo]()
$264
This Alaska Airlines deal was found by Cheapflights users on 7/10. 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 9/187:49 pm
SJC
- HLN
2 stops19h 52m
Alaska Airlines
Deal found 7/10![Alaska Airlines logo]()
$289
This Delta deal was found by Cheapflights users on 7/10. 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 9/195:08 pm
SJC
- HLN
1 stop4h 21m
Delta
Deal found 7/10![Delta logo]()
$300
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 July 12, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $343 (Alaska Airlines) |
One-way from | $198 (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 July 12, 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 - HLN
SJCHLN
San Jose
Wed 10/21
8:00 am-4:11 pm
1 stop7h 11m
Helena
Sat 10/24
4:48 pm-10:53 pm
1 stop7h 05m
$343
San JoseHelena
SJC - HLN
SJCHLN
San Jose
Tue 11/3
7:43 pm-4:04 pm
1 stop19h 21m
Helena
Sat 11/7
4:41 pm-8:43 pm
1 stop5h 02m
$379
San JoseHelena
SJC - HLN
SJCHLN
San Jose
Sat 12/12
7:03 am-3:31 pm
1 stop7h 28m
Helena
Tue 12/15
4:08 pm-7:54 pm
1 stop4h 46m
$431
San JoseHelena
SJC - HLN
SJCHLN
San Jose
Sat 8/1
5:01 pm-10:39 pm
1 stop4h 38m
Helena
Mon 8/3
12:55 pm-10:13 pm
2 stops10h 18m
$436
Quickest round-trip
San JoseHelena
SJC - HLN
SJCHLN
San Jose
Thu 9/3
6:00 am-12:15 pm
1 stop5h 15m
Helena
Mon 9/7
5:40 am-8:54 am
1 stop4h 14m
$463
San JoseHelena
SJC - HLN
SJCHLN
San Jose
Tue 8/4
10:19 am-4:32 pm
1 stop5h 13m
Helena
Fri 8/7
5:09 pm-11:59 pm
1 stop7h 50m
$480
Cheapest one-way
San JoseHelena
SJC - HLN
SJCHLN
San Jose
Wed 9/16
6:00 am-12:17 pm
1 stop5h 17m
$198
San JoseHelena
SJC - HLN
SJCHLN
San Jose
Tue 9/15
2:56 pm-10:24 pm
2 stops6h 28m
$203
San JoseHelena
SJC - HLN
SJCHLN
San Jose
Mon 9/14
7:45 pm-4:41 pm
1 stop19h 56m
$207
San JoseHelena
SJC - HLN
SJCHLN
San Jose
Tue 8/11
6:00 am-12:15 pm
1 stop5h 15m
$216
Showing 1-10 of 15 resultsSorted 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 July.
| 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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