What are the cheapest airlines flying from San Jose to Helena round-trip?

Our cheapest airline available from San Jose to Helena is Delta. Our recent data shows that you can find tickets from as low as $369 on this airline. An additional option worth looking into is Alaska Airlines, starting at $445.

What is the cheapest day to fly from San Jose to Helena?

Travelers seeking maximum savings on their San Jose to Helena flight should consider departing on Friday mornings when fares are most often at their lowest. Friday mornings flights should be avoided if possible as fares are typically the most expensive at this time.

What is the cheapest time of day to fly from SJC to HLN?

When flying from San Jose to Helena, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

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.

Can I find deals for flights from San Jose to Helena that include hotel bookings?

Yes. In addition to deals on San Jose to Helena flights, Cheapflights offers vacation packages that include both flights and hotel.

How can I find direct flights from San Jose to Helena?

After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from San Jose to Helena.

Can I find deals for business class flights from San Jose to Helena?

Yes. Cheapflights offers flight deals from San Jose to Helena by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

$369+ Flights from San Jose to Helena

Q: 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 $638). 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.

Q: E

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.

Q: E

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).

Q: E

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.

Q: Can I find deals for flights from San Jose to Helena that include hotel bookings?

Yes. In addition to deals on San Jose to Helena flights, Cheapflights offers vacation packages that include both flights and hotel.

Q: How can I find direct flights from San Jose to Helena?

After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from San Jose to Helena.

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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

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Cheap flight deals from San Jose to Helena

Most accurate provider	Expedia 1 star
Most trusted provider	Expedia 3 stars
Round-trip from	$369 (Delta)

Provider with most accurate pricing for San Jose-Helena flight deals.

Search Deals

Provider most trusted by Cheapflights users for San Jose-Helena flights.

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From San Jose to Helena

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Find flight deals from San Jose to Helena

Cheapest flights from San Jose to Helena
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 February 18, 2025.

Thu 4/35:45 amSJC - HLN

1 stop5h 50mDelta

Mon 4/75:45 amHLN - SJC

1 stop4h 23mDelta

Deal found 2/17

$369

Fri 4/116:15 amSJC - HLN

2 stops8h 24mAlaska Airlines

Mon 4/144:19 pmHLN - SJC

1 stop7h 32mAlaska Airlines

Deal found 2/17

$445

Thu 2/2012:59 pmSJC - HLN

1 stop7h 13mUnited Airlines

Sun 2/232:05 pmHLN - SJC

1 stop8h 28mUnited Airlines

Deal found 2/17

$1,099

Best flights from San Jose to Helena
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 February 18, 2025.

Thu 4/35:45 amSJC - HLN

1 stop5h 50mDelta

Mon 4/75:45 amHLN - SJC

1 stop4h 23mDelta

Deal found 2/17

$369

Fri 4/116:15 amSJC - HLN

2 stops8h 24mAlaska Airlines

Mon 4/144:19 pmHLN - SJC

1 stop7h 32mAlaska Airlines

Deal found 2/17

$445

Last-minute flights from San Jose to Helena
Discover last-minute flight deals from San Jose to Helena. Data last updated February 18, 2025 and is based on user searches.

Thu 2/2012:59 pmSJC - HLN

1 stop7h 13mUnited Airlines

Sun 2/232:05 pmHLN - SJC

1 stop8h 28mUnited Airlines

Deal found 2/17

$1,099

Thu 2/275:50 amSJC - HLN

1 stop6h 00mDelta

Fri 2/285:54 amHLN - SJC

1 stop7h 33mDelta

Deal found 2/17

$809

Thu 2/2710:00 amSJC - HLN

1 stop4h 42mAlaska Airlines

Fri 2/284:19 pmHLN - SJC

2 stops17h 07mAlaska Airlines

Deal found 2/17

$966

Mon 3/38:12 amSJC - HLN

1 stop6h 30mAlaska Airlines

Tue 3/44:19 pmHLN - SJC

1 stop22h 52mAlaska Airlines

Deal found 2/17

$610

Find flights from San Jose to Helena within your budget

Fly from

Fly to

Route

Depart

Return

Price

San JoseHelena

SJC - HLN

SJCHLN

San Jose

Thu 4/3

5:45 am-12:35 pm

1 stop5h 50m

Helena

Mon 4/7

5:45 am-9:08 am

1 stop4h 23m

$369

San JoseHelena

SJC - HLN

SJCHLN

San Jose

Fri 4/11

6:15 am-3:39 pm

2 stops8h 24m

Helena

Mon 4/14

4:19 pm-10:51 pm

1 stop7h 32m

$445

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/17

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.

Travel insights for flights from San Jose to Helena

Get recent, data-driven insights about flights from San Jose to Helena including ideal travel times, pricing trends, and more.

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 $638). 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

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

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

Read through reviews of airlines operating flights from San Jose to Helena, such as Alaska Airlines and Delta. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.

Alaska Airlines

8.0

Very good

9,685 reviews

Reviews

1 / 20

10.0

Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them

Alaska Airlines

8.0

Very good

9,685 reviews

Alaska Airlines

8.0

Very good

9,685 reviews

Reviews

1 / 20

10.0

Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them

Delta

8.0

Very good

8,258 reviews

Alaska Airlines

8.0

Very good

9,685 reviews

Reviews

1 / 20

10.0

Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them

Related info for your journey

What are the cheapest airlines flying from San Jose to Helena round-trip?
Our cheapest airline available from San Jose to Helena is Delta. Our recent data shows that you can find tickets from as low as $369 on this airline. An additional option worth looking into is Alaska Airlines, starting at $445.
Can I find deals for flights from San Jose to Helena that include hotel bookings?
Yes. In addition to deals on San Jose to Helena flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from San Jose to Helena?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from San Jose to Helena.
Can I find deals for business class flights from San Jose to Helena?
Yes. Cheapflights offers flight deals from San Jose to Helena by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.
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 $638). 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.

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$369+ Cheap flights from San Jose 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 4/3. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from San Jose to Helena with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Cheap flight deals from San Jose to Helena

Most accurate provider

Most trusted provider

Round-trip from

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 February 18, 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 February 18, 2025.

Find flights from San Jose to Helena within your budget

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.

Travel insights for flights from San Jose to Helena

Get recent, data-driven insights about flights from San Jose to Helena including ideal travel times, pricing trends, and more.

What is the cheapest month to book a flight from San Jose to Helena?

Rainfall in Helena by month

Plan your trip to Helena by taking into account the average rainfall totals by month.

Temperature in Helena by month

Plan your trip to Helena by taking into account the average temperature totals by month.

Reviews of airlines servicing Helena

Read through reviews of airlines operating flights from San Jose to Helena, such as Alaska Airlines and Delta. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.

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.

What are the cheapest airlines flying from San Jose to Helena round-trip?

Can I find deals for flights from San Jose to Helena that include hotel bookings?

How can I find direct flights from San Jose to Helena?

Can I find deals for business class flights from San Jose to Helena?

What is the cheapest month to book a flight from San Jose to Helena?

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for San Jose to Helena

See prices for flight routes from nearby airports that may be better suited for you.

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Cheapest flights from San Jose to Helena
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 February 18, 2025.