Cheap flights from Helena to San Jose from $659

This is the cheapest round-trip flight price found by a momondo user in the last 72 hours by searching for a flight from Helena to San Jose departing on 2/23. 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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Cheap round-trip flights

Enter your travel dates to find the best prices.
Delta Logo
5:30 am - 9:02 am
HLN
-
SJC
4h 32m
1 stop
Delta Logo
5:45 am - 12:25 pm
SJC
-
HLN
5h 40m
1 stop
$659Delta
Mon, Feb 23 - Thu, Feb 26
Delta Logo
1:10 pm - 10:05 pm
HLN
-
SJC
9h 55m
2 stops
Delta Logo
5:45 am - 12:25 pm
SJC
-
HLN
5h 40m
1 stop
$662Delta
Mon, Feb 23 - Thu, Feb 26

Delta flights from Helena to San Jose, California

Our best Delta deals on Helena to San Jose, California flight tickets
Delta
Feb 23
HLN5:30 amHelena
4h 32m
1 stop
SJC9:02 amSan Jose
Feb 26
SJC5:45 amSan Jose
5h 40m
1 stop
HLN12:25 pmHelena
$659
Delta
Feb 23
HLN1:10 pmHelena
9h 55m
2 stops
SJC10:05 pmSan Jose
Feb 26
SJC5:45 amSan Jose
5h 40m
1 stop
HLN12:25 pmHelena
$662
Delta
Feb 6
HLN5:30 amHelena
4h 30m
1 stop
SJC9:00 amSan Jose
Feb 9
SJC5:54 amSan Jose
5h 33m
1 stop
HLN12:27 pmHelena
$941

United Airlines flights from Helena to San Jose, California

Our best United Airlines deals on Helena to San Jose, California flight tickets
United Airlines
Jan 31
HLN6:15 amHelena
8h 23m
1 stop
SJC1:38 pmSan Jose
Feb 4
SJC4:00 pmSan Jose
28h 26m
1 stop
HLN9:26 pmHelena
$1,032
United Airlines
Feb 6
HLN2:27 pmHelena
7h 39m
1 stop
SJC9:06 pmSan Jose
Feb 9
SJC4:00 pmSan Jose
28h 26m
1 stop
HLN9:26 pmHelena
$1,080

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 January 29, 2026.
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

Mon 2/23

5:30 am-9:02 am

1 stop4h 32m

San Jose

Thu 2/26

5:45 am-12:25 pm

1 stop5h 40m

$659

HelenaSan Jose

HLN - SJC

HLNSJC

Helena

Mon 2/23

1:10 pm-10:05 pm

2 stops9h 55m

San Jose

Thu 2/26

5:45 am-12:25 pm

1 stop5h 40m

$662

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

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 airlines fly to San Jose, California?

United Airlines, Alaska Airlines and Delta are the top three most popular airlines that fly to San Jose, California from Helena according to our data. United Airlines is the first choice among our users, with 33% of people opting to fly with this airline when traveling to San Jose, California. Keep in mind that there are 6 different airlines that fly to San Jose, California on a routine basis, so you have a few additional options to choose from.

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

Fastest flight time

4h 30m

Direct flights

None
The fastest flight from Helena to San Jose, California takes 4h 30m
There are no direct flights from Helena to San Jose, California. There are no popular flight routes from Helena to San Jose, California.
  • 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 30m.

  • 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 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.

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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Sat 2/28
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