$149 Cheap Flights from San Jose (SJC) to Helena (HLN)

View $149 flight on Fri, Feb 27, 2026Opens in a new window

Popular airlines from Norman Y. Mineta San Jose Intl. Airport (SJC) to Helena, MT (HLN-Helena Regional)

Cheap Flights from San Jose to Helena (SJC-HLN)

Prices were available within the past 7 days and start at $149 for one-way flights and $260 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Hawaiian Airlines
Tue, Nov 18 - Wed, Dec 3
SJC
San Jose
HLN
Helena
$260 Roundtrip, found 6 days ago
$260
Roundtrip
found 6 days ago
Select Hawaiian Airlines flight, departing Tue, Nov 18 from San Jose to Helena, returning Wed, Dec 3, priced at $260 found 6 days ago
Hawaiian Airlines
Mon, Nov 17 - Wed, Dec 3
SJC
San Jose
HLN
Helena
$272 Roundtrip, found 6 days ago
$272
Roundtrip
found 6 days ago
Select Hawaiian Airlines flight, departing Mon, Nov 17 from San Jose to Helena, returning Wed, Dec 3, priced at $272 found 6 days ago
Hawaiian Airlines
Tue, Feb 3 - Tue, Feb 10
SJC
San Jose
HLN
Helena
$282 Roundtrip, found 3 days ago
$282
Roundtrip
found 3 days ago
Select Hawaiian Airlines flight, departing Tue, Feb 3 from San Jose to Helena, returning Tue, Feb 10, priced at $282 found 3 days ago
Hawaiian Airlines
Sun, Feb 1 - Tue, Feb 10
SJC
San Jose
HLN
Helena
$290 Roundtrip, found 3 days ago
$290
Roundtrip
found 3 days ago
Select Hawaiian Airlines flight, departing Sun, Feb 1 from San Jose to Helena, returning Tue, Feb 10, priced at $290 found 3 days ago
Hawaiian Airlines
Tue, Feb 3 - Wed, Feb 11
SJC
San Jose
HLN
Helena
$292 Roundtrip, found 3 days ago
$292
Roundtrip
found 3 days ago
Select Hawaiian Airlines flight, departing Tue, Feb 3 from San Jose to Helena, returning Wed, Feb 11, priced at $292 found 3 days ago
Alaska Airlines
Fri, Feb 27 - Sat, Mar 14
SJC
San Jose
HLN
Helena
$298 Roundtrip, found 11 hours ago
$298
Roundtrip
found 11 hours ago
Select Alaska Airlines flight, departing Fri, Feb 27 from San Jose to Helena, returning Sat, Mar 14, priced at $298 found 11 hours ago
Delta
Sun, Feb 1 - Wed, Feb 11
SJC
San Jose
HLN
Helena
$299 Roundtrip, found 3 days ago
$299
Roundtrip
found 3 days ago
Select Delta flight, departing Sun, Feb 1 from San Jose to Helena, returning Wed, Feb 11, priced at $299 found 3 days ago
Hawaiian Airlines
Fri, Feb 6 - Wed, Feb 11
SJC
San Jose
HLN
Helena
$300 Roundtrip, found 3 days ago
$300
Roundtrip
found 3 days ago
Select Hawaiian Airlines flight, departing Fri, Feb 6 from San Jose to Helena, returning Wed, Feb 11, priced at $300 found 3 days ago
Hawaiian Airlines
Tue, Feb 3 - Fri, Feb 6
SJC
San Jose
HLN
Helena
$302 Roundtrip, found 3 days ago
$302
Roundtrip
found 3 days ago
Select Hawaiian Airlines flight, departing Tue, Feb 3 from San Jose to Helena, returning Fri, Feb 6, priced at $302 found 3 days ago
United
Sun, Nov 16 - Wed, Dec 3
SJC
San Jose
HLN
Helena
$479 Roundtrip, found 3 days ago
$479
Roundtrip
found 3 days ago
Select United flight, departing Sun, Nov 16 from San Jose to Helena, returning Wed, Dec 3, priced at $479 found 3 days ago

Find the cheapest month to fly from San Jose (SJC) to Helena (HLN)

January is typically the cheapest month to fly

From $229 - $833 per traveler.

Alternative airports near Helena

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Helena Regional HLN. Cheapest and Closest option available. Average driving time to city center is 7 minutes. Flights from $479
HLN
Helena Regional
CheapestClosest
Average driving time to city center7 min
Flights from $479

Frequently asked questions

How much does a flight from Norman Y. Mineta San Jose Intl. Airport (SJC) to Helena Regional Airport (HLN) cost?
Grab a cheap one-way flight from $149 or cheap return flight from $260 from Norman Y. Mineta San Jose Intl. Airport (SJC) to Helena Regional Airport (HLN) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to see our cheapest flight deals on this route.
What is the cheapest month to fly from Norman Y. Mineta San Jose Intl. Airport (SJC) to Helena Regional Airport (HLN)?
November is the least expensive month to fly from SJC to HLN. Traveling outside of peak seasons is often the key to better flight prices.
What is the cheapest airline that flies from Norman Y. Mineta San Jose Intl. Airport (SJC) to Helena Regional Airport (HLN)?
Use the filter tool on Expedia to compare different airlines and find the cheapest carrier that'll fly you from SJC to HLN. Then, sort your results by "Price (lowest to highest)" to snap up a great deal.
How many flights per day from Norman Y. Mineta San Jose Intl. Airport (SJC) to Helena Regional Airport (HLN)?
You'll need to take a flight with a layover when traveling from Norman Y. Mineta San Jose Intl. Airport (SJC) to Helena Regional Airport (HLN). Direct flights don't operate daily on this route. However, just filter your search to include one or more stops to discover an option that works for you.
What day of the week has the most flights from SJC to HLN?
Generally you'll find the greatest selection of flight options on a Friday. Tuesdays are often the quietest.* However, this can vary depending on the airline, season and other factors.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Norman Y. Mineta San Jose Intl. Airport (SJC) to Helena Regional Airport (HLN)?
Choose a flight from Norman Y. Mineta San Jose Intl. Airport (SJC) to Helena Regional Airport (HLN) that leaves before 3 PM to reduce the risk of delays and cancellations. Later departures are on average 22% more likely to be canceled.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
Is it cheaper to buy a plane ticket from Norman Y. Mineta San Jose Intl. Airport (SJC) to Helena Regional Airport (HLN) last-minute?
Last-minute fares from SJC to HLN are usually more expensive. To secure the lowest rates, start looking for flights as soon as possible. That said, if you can play around with your travel dates, you may find a cheap fare right before your journey.
Is it cheaper to book a SJC to HLN flight and hotel package?
Booking a SJC to HLN flight and hotel package is usually cheaper than booking separately. With Expedia, you can enjoy the convenience of organizing your trip all in one place. Choose from our wide range of hotels and then add car rentals, flights and activities to your booking. Bundle everything together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Norman Y. Mineta San Jose Intl. Airport (SJC) to Helena Regional Airport (HLN)?
In most instances, you're able to cancel or reschedule your SJC to HLN flight. However, additional charges may apply, especially if you made your booking over 24 hours ago. Check your itinerary for the airline's guidelines and fees on flight changes, or if you need further details, go to our Customer Service portal.

Travel information

Origin airport
Norman Y. Mineta San Jose Intl.
Destination airport
Helena Regional
Airlines serving
Alaska Airlines
Roundtrip price
$260
Distance
816 mi

Book with confidence

San Jose to Helena Flights

The cheapest times to fly from San Jose to Helena

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from San Jose to Helena are during the month of November. You can find some of the cheapest flights from San Jose to Helena with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from San Jose to Helena

Sunday is one of the best days to book for cheap flights from San Jose to Helena: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from San Jose to Helena

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from San Jose to Helena in 2025. You can also book with separate airlines for your outbound and return journeys, from $149 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap San Jose to Helena flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your San Jose to Helena airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

San Jose to Helena Flights

Explore a world of travel with Expedia

*Available to One Key members.