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 many operators does momondo search for flights from Helena Airport to San Francisco Airport?

The number of operators available for flights from Helena Airport to San Francisco Airport is 1 as of January 2026.

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.

$168 Cheap Flights from Helena to San Francisco in 2026

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Find the cheapest flights from Helena to San Francisco

Round-trip

One-way

Cheap round-trip flights

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4:36 pm - 9:55 pm

HLN

SFO

6h 19m

1 stop

6:30 am - 3:59 pm

SFO

HLN

8h 29m

1 stop

$250Alaska Airlines

mié., feb. 25 - sáb., feb. 28

4:36 pm - 10:56 pm

HLN

SFO

7h 20m

1 stop

7:28 pm - 3:59 pm

SFO

HLN

19h 31m

1 stop

$260Alaska Airlines

mié., feb. 25 - sáb., feb. 28

4:36 pm - 10:56 pm

HLN

SFO

7h 20m

1 stop

6:30 am - 3:59 pm

SFO

HLN

8h 29m

1 stop

$270Alaska Airlines

mié., feb. 25 - sáb., feb. 28

4:36 pm - 8:46 am

HLN

SFO

17h 10m

2 stops

6:30 am - 3:59 pm

SFO

HLN

8h 29m

1 stop

$288Alaska Airlines

mié., feb. 25 - sáb., feb. 28

4:36 pm - 12:15 pm

HLN

SFO

20h 39m

2 stops

6:30 am - 3:59 pm

SFO

HLN

8h 29m

1 stop

$308Alaska Airlines

mié., feb. 25 - sáb., feb. 28

4:36 pm - 9:55 pm

HLN

SFO

6h 19m

1 stop

8:42 am - 3:59 pm

SFO

HLN

6h 17m

1 stop

$313Alaska Airlines

lun., feb. 23 - jue., feb. 26

4:36 pm - 8:46 am

HLN

SFO

17h 10m

2 stops

6:00 am - 3:59 pm

SFO

HLN

8h 59m

2 stops

$334Alaska Airlines

mié., feb. 25 - sáb., feb. 28

6:22 pm - 11:30 am

HLN

SFO

18h 08m

2 stops

9:10 pm - 5:45 pm

SFO

HLN

19h 35m

1 stop

$346Alaska Airlines

lun., may. 4 - jue., may. 7

6:22 pm - 11:44 pm

HLN

SFO

6h 22m

1 stop

9:00 am - 5:45 pm

SFO

HLN

7h 45m

1 stop

$347Alaska Airlines

lun., may. 4 - jue., may. 7

6:22 pm - 11:30 am

HLN

SFO

18h 08m

2 stops

9:10 pm - 5:45 pm

SFO

HLN

19h 35m

1 stop

$352Alaska Airlines

lun., may. 4 - jue., may. 7

United Airlines flights from Helena to San Francisco

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

United Airlines

Feb 11

HLN6:15 amHelena

6h 43m

1 stop

SFO11:58 amSan Francisco

Feb 15

SFO6:35 amSan Francisco

6h 05m

1 stop

HLN1:40 pmHelena

$559

United Airlines

Feb 6

HLN2:27 pmHelena

9h 31m

1 stop

SFO10:58 pmSan Francisco

Feb 9

SFO5:00 amSan Francisco

7h 41m

1 stop

HLN1:41 pmHelena

$841

Alaska Airlines flights from Helena to San Francisco

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

Alaska Airlines

Feb 25

HLN4:36 pmHelena

6h 19m

1 stop

SFO9:55 pmSan Francisco

Feb 28

SFO6:30 amSan Francisco

8h 29m

1 stop

HLN3:59 pmHelena

$250

Alaska Airlines

Feb 25

HLN4:36 pmHelena

7h 20m

1 stop

SFO10:56 pmSan Francisco

Feb 28

SFO7:28 pmSan Francisco

19h 31m

1 stop

HLN3:59 pmHelena

$260

Alaska Airlines

Feb 25

HLN4:36 pmHelena

7h 20m

1 stop

SFO10:56 pmSan Francisco

Feb 28

SFO6:30 amSan Francisco

8h 29m

1 stop

HLN3:59 pmHelena

$270

Fly from

Fly to

Route

Depart

Return

Price

HelenaSan Francisco

HLN - SFO

HLNSFO

Helena

mié. 2/25

4:36 pm-9:55 pm

1 stop6h 19m

San Francisco

sáb. 2/28

6:30 am-3:59 pm

1 stop8h 29m

$250

HelenaSan Francisco

HLN - SFO

HLNSFO

Helena

mié. 2/25

4:36 pm-10:56 pm

1 stop7h 20m

San Francisco

sáb. 2/28

7:28 pm-3:59 pm

1 stop19h 31m

$260

HelenaSan Francisco

HLN - SFO

HLNSFO

Helena

mié. 2/25

4:36 pm-10:56 pm

1 stop7h 20m

San Francisco

sáb. 2/28

6:30 am-3:59 pm

1 stop8h 29m

$270

HelenaSan Francisco

HLN - SFO

HLNSFO

Helena

mié. 2/25

4:36 pm-8:46 am

2 stops17h 10m

San Francisco

sáb. 2/28

6:30 am-3:59 pm

1 stop8h 29m

$288

HelenaSan Francisco

HLN - SFO

HLNSFO

Helena

mié. 2/25

4:36 pm-12:15 pm

2 stops20h 39m

San Francisco

sáb. 2/28

6:30 am-3:59 pm

1 stop8h 29m

$308

HelenaSan Francisco

HLN - SFO

HLNSFO

Helena

lun. 2/23

4:36 pm-9:55 pm

1 stop6h 19m

San Francisco

jue. 2/26

8:42 am-3:59 pm

1 stop6h 17m

$313

HelenaSan Francisco

HLN - SFO

HLNSFO

Helena

mié. 2/25

4:36 pm-8:46 am

2 stops17h 10m

San Francisco

sáb. 2/28

6:00 am-3:59 pm

2 stops8h 59m

$334

HelenaSan Francisco

HLN - SFO

HLNSFO

Helena

lun. 5/4

6:22 pm-11:30 am

2 stops18h 08m

San Francisco

jue. 5/7

9:10 pm-5:45 pm

1 stop19h 35m

$346

HelenaSan Francisco

HLN - SFO

HLNSFO

Helena

lun. 5/4

6:22 pm-11:44 pm

1 stop6h 22m

San Francisco

jue. 5/7

9:00 am-5:45 pm

1 stop7h 45m

$347

HelenaSan Francisco

HLN - SFO

HLNSFO

Helena

lun. 5/4

6:22 pm-11:30 am

2 stops18h 08m

San Francisco

jue. 5/7

9:10 pm-5:45 pm

1 stop19h 35m

$352

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 19 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

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

Alaska Airlines and United Airlines 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 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

Fastest flight time	4h 33m
Direct flights	None

The fastest flight from Helena to San Francisco takes 4h 33m

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 33m 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 many operators does momondo search for flights from Helena Airport to San Francisco Airport?
The number of operators available for flights from Helena Airport to San Francisco Airport is 1 as of January 2026.
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.
What is the most popular airline from Helena to San Francisco?
Based on momondo bookings for flights between Helena and San Francisco, the leading airline is Delta, making up 100% of the total bookings.

Best airlines flying from Helena to San Francisco

Compare and see reviews for airlines that fly from Helena to San Francisco with momondo

Airline	Rating	Free Cancellation	Price
Delta	PriceFrom $238	Free Cancellation	Rating 7.9 8,128 reviews		Search Delta flights

Santa Cruz

Carmel-by-the-Sea

Modesto

Sonoma

Bodega Bay

Roseville

Hayward

Calistoga

Big Sur

Santa Clara

Berkeley

Walnut Creek

Fremont

Daly City

Half Moon Bay

Salinas

Vallejo

Livermore

Sunnyvale

Turlock

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.