What is the cheapest airline that flies from Helena to San Francisco?

Alaska Airlines and Delta are the most popular carriers operating from Helena to San Francisco

What airlines fly to San Francisco?

Alaska Airlines, United Airlines and Delta are the top three most popular airlines that fly to San Francisco from Helena according to our data. Alaska Airlines is the first choice among our users, with 35% of people opting to fly with this airline when traveling to San Francisco. Keep in mind that there are 6 different airlines that fly to San Francisco on a routine basis, so you have a few additional options to choose from.

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

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

How old do you have to be to fly from Helena Airport to San Francisco 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 Francisco Airport.

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

The travel and health documents you'll need for your trip to San Francisco 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 Francisco Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

$129 Cheap Flights from Helena to San Francisco in 2025/26

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Find the cheapest flights from Helena to San Francisco

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Cheap round-trip flights

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4:10 pm - 10:18 pmHLN-SFO

7h 08m1 stop

6:00 am - 3:43 pmSFO-HLN

8h 43m1 stop

$262Hawaiian Airlines

Find Deal

Sat, Mar 7 - Wed, Mar 11

12:50 pm - 10:30 pmHLN-SFO

10h 40m2 stops

1:59 pm - 10:38 pmSFO-HLN

7h 39m2 stops

$264Delta

Find Deal

Sat, Mar 7 - Wed, Mar 11

4:10 pm - 10:18 pmHLN-SFO

7h 08m1 stop

6:00 am - 3:43 pmSFO-HLN

8h 43m1 stop

$283Hawaiian Airlines

Find Deal

Sat, Mar 7 - Wed, Mar 11

5:59 pm - 9:58 pmHLN-SFO

4h 59m1 stop

9:40 pm - 3:43 pmSFO-HLN

17h 03m1 stop

$293Alaska Airlines

Find Deal

Thu, Feb 5 - Mon, Feb 16

12:50 pm - 4:29 pmHLN-SFO

4h 39m1 stop

1:59 pm - 10:38 pmSFO-HLN

7h 39m2 stops

$296Delta

Find Deal

Sat, Mar 7 - Wed, Mar 11

12:50 pm - 10:30 pmHLN-SFO

10h 40m2 stops

1:59 pm - 10:38 pmSFO-HLN

7h 39m2 stops

$299Delta

Find Deal

Sat, Mar 7 - Wed, Mar 11

5:59 pm - 9:11 amHLN-SFO

16h 12m2 stops

9:40 pm - 3:43 pmSFO-HLN

17h 03m1 stop

$316Alaska Airlines

Find Deal

Thu, Feb 5 - Mon, Feb 16

6:28 pm - 10:45 pmHLN-SFO

5h 17m1 stop

8:31 pm - 5:51 pmSFO-HLN

20h 20m1 stop

$322Alaska Airlines

Find Deal

Fri, Dec 5 - Mon, Dec 8

6:40 am - 11:55 amHLN-SFO

6h 15m1 stop

8:45 pm - 1:27 pmSFO-HLN

15h 42m2 stops

$568United Airlines

Find Deal

Wed, Nov 12 - Sun, Nov 16

2:22 pm - 8:57 pmHLN-SFO

7h 35m1 stop

9:30 am - 1:27 pmSFO-HLN

26h 57m2 stops

$583United Airlines

Find Deal

Thu, Nov 13 - Mon, Nov 17

Hawaiian Airlines flights from Helena to San Francisco

Our best Hawaiian Airlines deals on Helena to San Francisco flight tickets

Hawaiian Airlines

Mar 7

HLN4:10 pmHelena

7h 08m

1 stop

SFO10:18 pmSan Francisco

Mar 11

SFO6:00 amSan Francisco

8h 43m

1 stop

HLN3:43 pmHelena

$262

Find similar

Hawaiian Airlines

Mar 7

HLN4:10 pmHelena

7h 08m

1 stop

SFO10:18 pmSan Francisco

Mar 11

SFO6:00 amSan Francisco

8h 43m

1 stop

HLN3:43 pmHelena

$283

Find similar

Alaska Airlines flights from Helena to San Francisco

Our best Alaska Airlines deals on Helena to San Francisco flight tickets

Alaska Airlines

Feb 5

HLN5:59 pmHelena

4h 59m

1 stop

SFO9:58 pmSan Francisco

Feb 16

SFO9:40 pmSan Francisco

17h 03m

1 stop

HLN3:43 pmHelena

$293

Find similar

Alaska Airlines

Feb 5

HLN5:59 pmHelena

16h 12m

2 stops

SFO9:11 amSan Francisco

Feb 16

SFO9:40 pmSan Francisco

17h 03m

1 stop

HLN3:43 pmHelena

$316

Find similar

Alaska Airlines

Dec 5

HLN6:28 pmHelena

5h 17m

1 stop

SFO10:45 pmSan Francisco

Dec 8

SFO8:31 pmSan Francisco

20h 20m

1 stop

HLN5:51 pmHelena

$322

Find similar

Fly from

Fly to

Route

Depart

Return

Price

HelenaSan Francisco

HLN - SFO

HLNSFO

Helena

Sat 3/7

4:10 pm-10:18 pm

1 stop7h 08m

San Francisco

Wed 3/11

6:00 am-3:43 pm

1 stop8h 43m

$262

HelenaSan Francisco

HLN - SFO

HLNSFO

Helena

Sat 3/7

12:50 pm-10:30 pm

2 stops10h 40m

San Francisco

Wed 3/11

1:59 pm-10:38 pm

2 stops7h 39m

$264

HelenaSan Francisco

HLN - SFO

HLNSFO

Helena

Sat 3/7

4:10 pm-10:18 pm

1 stop7h 08m

San Francisco

Wed 3/11

6:00 am-3:43 pm

1 stop8h 43m

$283

HelenaSan Francisco

HLN - SFO

HLNSFO

Helena

Thu 2/5

5:59 pm-9:58 pm

1 stop4h 59m

San Francisco

Mon 2/16

9:40 pm-3:43 pm

1 stop17h 03m

$293

HelenaSan Francisco

HLN - SFO

HLNSFO

Helena

Sat 3/7

12:50 pm-4:29 pm

1 stop4h 39m

San Francisco

Wed 3/11

1:59 pm-10:38 pm

2 stops7h 39m

$296

HelenaSan Francisco

HLN - SFO

HLNSFO

Helena

Sat 3/7

12:50 pm-10:30 pm

2 stops10h 40m

San Francisco

Wed 3/11

1:59 pm-10:38 pm

2 stops7h 39m

$299

HelenaSan Francisco

HLN - SFO

HLNSFO

Helena

Thu 2/5

5:59 pm-9:11 am

2 stops16h 12m

San Francisco

Mon 2/16

9:40 pm-3:43 pm

1 stop17h 03m

$316

HelenaSan Francisco

HLN - SFO

HLNSFO

Helena

Fri 12/5

6:28 pm-10:45 pm

1 stop5h 17m

San Francisco

Mon 12/8

8:31 pm-5:51 pm

1 stop20h 20m

$322

HelenaSan Francisco

HLN - SFO

HLNSFO

Helena

Wed 11/12

6:40 am-11:55 am

1 stop6h 15m

San Francisco

Sun 11/16

8:45 pm-1:27 pm

2 stops15h 42m

$568

HelenaSan Francisco

HLN - SFO

HLNSFO

Helena

Thu 11/13

2:22 pm-8:57 pm

1 stop7h 35m

San Francisco

Mon 11/17

9:30 am-1:27 pm

2 stops26h 57m

$583

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from Helena to San Francisco

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

Prices

Airlines

What is the cheapest day to depart on your flight to San Francisco?

The cheapest day to depart from Helena to San Francisco is on a Monday when prices can be found for as low as $327. The most expensive day to fly to San Francisco is Sunday, with ticket prices averaging around $679.

What is the cheapest time of day to depart on your flight to San Francisco?

Our data shows that the cheapest Helena to San Francisco flights are usually those with departure times at noon. Our users have found flights to San Francisco at noon for as low as $356. Flights in the morning are often more expensive with an average ticket price of $421.

When to book flights from Helena to San Francisco

Are you open to changing your travel dates? Check out the ideal times to fly from Helena to San Francisco according to our flight data. Find out which month and days have the cheapest flights.

Estimated round-trip price

Cheap Helena to San Francisco (HLN to SFO) flight deals and tips

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

Direct flights	None

There are no direct flights from Helena to San Francisco. There are no popular flight routes from Helena to San Francisco.

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How far is Helena to San Francisco by plane?
The distance between Helena and San Francisco is about 805.5 mi. 4h 26m is a normal flight duration for this route.
When did momondo last update prices for flights from Helena Airport to San Francisco Airport?
Prices for flights from Helena Airport to San Francisco Airport are updated daily.
How old do you have to be to fly from Helena Airport to San Francisco 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 Francisco Airport.
What documentation or ID do you need to fly to San Francisco Airport?
The travel and health documents you'll need for your trip to San Francisco 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 Francisco Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

Santa Cruz

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Modesto

Sonoma

Bodega Bay

Roseville

Calistoga

Hayward

Big Sur

Santa Clara

Daly City

Fremont

Berkeley

Vallejo

Walnut Creek

Half Moon Bay

Salinas

Turlock

Livermore

Pacific Grove

Why use momondo?

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

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to San Francisco from Helena.

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

All flight searches from Helena to San Francisco on momondo can be filtered to show those which offer flexible booking policies.

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

momondo provides multiple filters to help you find the best flight to San Francisco from Helena. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

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

Price alerts on flights to San Francisco from Helena are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.