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Cheap flights from Helena to San Jose from $150

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Helena to San Jose departing on 3/25. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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0 bags

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Find the cheapest flights from Helena to San Jose

Cheap round-trip flights

Enter your travel dates to find the best prices.
Hawaiian Airlines Logo
4:10 pm - 10:03 pmHLN-SJC
6h 53m1 stop
Hawaiian Airlines Logo
10:05 am - 3:43 pmSJC-HLN
4h 38m1 stop
$282Hawaiian Airlines
Find Deal
Sat, Mar 7 - Tue, Mar 10
Delta Logo
12:50 pm - 4:31 pmHLN-SJC
4h 41m1 stop
Delta Logo
5:45 am - 12:27 pmSJC-HLN
5h 42m1 stop
$299Delta
Find Deal
Sat, Mar 7 - Tue, Mar 10
Delta Logo
12:50 pm - 4:31 pmHLN-SJC
4h 41m1 stop
Delta Logo
7:15 am - 10:38 pmSJC-HLN
14h 23m2 stops
$331Delta
Find Deal
Sat, Mar 7 - Tue, Mar 10
Alaska Airlines Logo
4:10 pm - 10:03 pmHLN-SJC
6h 53m1 stop
Alaska Airlines Logo
6:30 pm - 3:43 pmSJC-HLN
20h 13m2 stops
$336Alaska Airlines
Find Deal
Sat, Mar 7 - Tue, Mar 10
Alaska Airlines Logo
4:10 pm - 11:01 amHLN-SJC
19h 51m2 stops
Alaska Airlines Logo
6:30 pm - 3:43 pmSJC-HLN
20h 13m2 stops
$393Alaska Airlines
Find Deal
Sat, Mar 7 - Tue, Mar 10
Alaska Airlines Logo
4:10 pm - 1:01 pmHLN-SJC
21h 51m2 stops
Alaska Airlines Logo
5:58 pm - 3:43 pmSJC-HLN
20h 45m2 stops
$403Alaska Airlines
Find Deal
Sat, Mar 7 - Tue, Mar 10

Delta flights from Helena to San Jose, California

Our best Delta deals on Helena to San Jose, California flight tickets
Delta
Mar 7
HLN12:50 pmHelena
4h 41m
1 stop
SJC4:31 pmSan Jose
Mar 10
SJC5:45 amSan Jose
5h 42m
1 stop
HLN12:27 pmHelena
$299
Find similar
Delta
Mar 7
HLN12:50 pmHelena
4h 41m
1 stop
SJC4:31 pmSan Jose
Mar 10
SJC7:15 amSan Jose
14h 23m
2 stops
HLN10:38 pmHelena
$331
Find similar
Delta
Nov 5
HLN5:45 amHelena
4h 19m
1 stop
SJC9:04 amSan Jose
Nov 6
SJC5:55 amSan Jose
5h 25m
1 stop
HLN12:20 pmHelena
$987
Find similar

Alaska Airlines flights from Helena to San Jose, California

Our best Alaska Airlines deals on Helena to San Jose, California flight tickets
Alaska Airlines
Mar 7
HLN4:10 pmHelena
6h 53m
1 stop
SJC10:03 pmSan Jose
Mar 10
SJC6:30 pmSan Jose
20h 13m
2 stops
HLN3:43 pmHelena
$336
Find similar
Alaska Airlines
Mar 7
HLN4:10 pmHelena
19h 51m
2 stops
SJC11:01 amSan Jose
Mar 10
SJC6:30 pmSan Jose
20h 13m
2 stops
HLN3:43 pmHelena
$393
Find similar
Alaska Airlines
Mar 7
HLN4:10 pmHelena
21h 51m
2 stops
SJC1:01 pmSan Jose
Mar 10
SJC5:58 pmSan Jose
20h 45m
2 stops
HLN3:43 pmHelena
$403
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Helena to San Jose, California 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, momondo users made 832,500 searches. Data last updated November 2, 2025.
Use the filters below to find and compare flights from Helena to San Jose, California that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

HelenaSan Jose

HLN - SJC

HLNSJC

Helena

Sat 3/7

4:10 pm-10:03 pm

1 stop6h 53m

San Jose

Tue 3/10

10:05 am-3:43 pm

1 stop4h 38m

$282

HelenaSan Jose

HLN - SJC

HLNSJC

Helena

Sat 3/7

12:50 pm-4:31 pm

1 stop4h 41m

San Jose

Tue 3/10

5:45 am-12:27 pm

1 stop5h 42m

$299

HelenaSan Jose

HLN - SJC

HLNSJC

Helena

Sat 3/7

12:50 pm-4:31 pm

1 stop4h 41m

San Jose

Tue 3/10

7:15 am-10:38 pm

2 stops14h 23m

$331

HelenaSan Jose

HLN - SJC

HLNSJC

Helena

Sat 3/7

4:10 pm-10:03 pm

1 stop6h 53m

San Jose

Tue 3/10

6:30 pm-3:43 pm

2 stops20h 13m

$336

HelenaSan Jose

HLN - SJC

HLNSJC

Helena

Sat 3/7

4:10 pm-11:01 am

2 stops19h 51m

San Jose

Tue 3/10

6:30 pm-3:43 pm

2 stops20h 13m

$393

HelenaSan Jose

HLN - SJC

HLNSJC

Helena

Sat 3/7

4:10 pm-1:01 pm

2 stops21h 51m

San Jose

Tue 3/10

5:58 pm-3:43 pm

2 stops20h 45m

$403

HelenaSan Jose

HLN - SJC

HLNSJC

Helena

Wed 3/25

2:30 pm-9:20 pm

1 stop7h 50m

$150

HelenaSan Jose

HLN - SJC

HLNSJC

Helena

Wed 3/25

4:10 pm-9:48 am

2 stops18h 38m

$273

HelenaSan Jose

HLN - SJC

HLNSJC

Helena

Fri 11/7

6:13 pm-10:59 pm

1 stop5h 46m

$453

HelenaSan Jose

HLN - SJC

HLNSJC

Helena

Fri 11/7

6:13 pm-4:38 pm

2 stops23h 25m

$628

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 11 resultsSorted by cheapest first
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See travel insights to San Jose from

How to get the cheapest flight ticket from Helena to San Jose, California

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest day to depart on your flight to San Jose, California?

On average, the least expensive day to fly to San Jose, California from Helena is on a Wednesday. momondo users have found tickets for Wednesday departures for as low as $264. However, this price may fluctuate depending on the airline, the season, and holidays. When flying out on a Friday, the most expensive travel day of the week, you can expect to see flight prices from Helena to San Jose, California for around $614.

What is the cheapest time of day to depart on your flight to San Jose, California?

The cheapest time of day to fly to San Jose, California is in the morning when flights can be purchased for as low as $467. At noon is when there is more demand to fly to San Jose, California, so prices are often more expensive at around $488 per ticket.

When to book flights from Helena to San Jose, California

Are you open to changing your travel dates? Check out the ideal times to fly from Helena to San Jose, California according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Helena to San Jose, California (HLN to SJC) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Helena to San Jose, California

Direct flights

None
There are no direct flights from Helena to San Jose, California. There are no popular flight routes from Helena to San Jose, California.
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  • How far is Helena to San Jose by plane?

    The straight-line distance from Helena to San Jose is 813.6 mi. A reasonable flight in good conditions will take 4h 41m.

  • When did momondo last update prices for flights from Helena Airport to San Jose Airport?

    Prices for flights from Helena Airport to San Jose Airport are updated daily.

  • How many operators does momondo search for flights from Helena Airport to San Jose Airport?

  • How old do you have to be to fly from Helena Airport to San Jose Airport?

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Helena Airport to San Jose Airport.

  • What documentation or ID do you need to fly to San Jose Airport?

    The travel and health documents you'll need for your trip to San Jose Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at San Jose Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

  • What is the most popular airline from Helena to San Jose, California?

Best airlines flying from Helena to San Jose, California

Compare and see reviews for airlines that fly from Helena to San Jose, California with momondo
Airline
Rating
Free Cancellation
Price
DeltaPriceFrom $336Free CancellationRating
7.9
8,001 reviews
Search Delta flights

Why use momondo?

Why should I use momondo to find a flight deal from Helena to San Jose?

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Helena to San Jose. Millions of users trust and use momondo every year so you are in good hands.

Can I find flights from Helena to San Jose with flexible booking policies on momondo?

Yes. momondo enables you to select and highlight flights to San Jose from Helena with this policy.

How can momondo help me find flights from Helena to San Jose?

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to San Jose from Helena.

I’m not ready to book a flight from Helena to San Jose right now. Can momondo alert me if prices change?

Of course. momondo tracks the price of Helena to San Jose flights. All you need is a valid email address and we will do the rest; it is that quick and easy.

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