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

Prices for flights from San Francisco Airport to Helena Airport refresh daily.

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

As of November 2026, there is 1 operator available to choose from for flights from San Francisco Airport to Helena Airport.

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

Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from San Francisco Airport to Helena Airport.

What documentation or ID do you need to fly to Helena Airport?

The required travel and health documents for your Helena Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Helena Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

$212 Cheap Flights from San Francisco to Helena in 2026/27

Find the cheapest flights from San Francisco to Helena

Round-trip

One-way

Cheap round-trip flights

Enter your travel dates to find the best prices.

8:59 pm - 12:30 pmSFO San Francisco-HLN Helena

14h 31m2 stops Seattle/Tacoma Intl Salt Lake City

1:10 pm - 11:43 pmHLN Helena-SFO San Francisco

11h 33m2 stops Salt Lake City Seattle/Tacoma Intl

$323Delta

Tue, Dec 1 - Fri, Dec 4

8:59 pm - 12:30 pmSFO San Francisco-HLN Helena

14h 31m2 stops Seattle/Tacoma Intl Salt Lake City

7:03 am - 5:16 pmHLN Helena-SFO San Francisco

11h 13m2 stops Salt Lake City Seattle/Tacoma Intl

$323Delta

Tue, Dec 1 - Thu, Dec 3

7:00 am - 4:12 pmSFO San Francisco-HLN Helena

8h 12m1 stop Seattle/Tacoma Intl

4:49 pm - 6:07 pmHLN Helena-SFO San Francisco

26h 18m1 stop Seattle/Tacoma Intl

$333Alaska Airlines

Sat, Dec 5 - Tue, Dec 8

7:00 am - 4:12 pmSFO San Francisco-HLN Helena

8h 12m1 stop Seattle/Tacoma Intl

4:49 pm - 6:07 pmHLN Helena-SFO San Francisco

26h 18m1 stop Seattle/Tacoma Intl

$343Alaska Airlines

Sat, Dec 5 - Tue, Dec 8

5:50 pm - 4:12 pmSFO San Francisco-HLN Helena

21h 22m1 stop Seattle/Tacoma Intl

4:49 pm - 6:12 pmHLN Helena-SFO San Francisco

26h 23m1 stop Seattle/Tacoma Intl

$348Alaska Airlines

Tue, Dec 8 - Fri, Dec 11

12:53 pm - 4:31 pmSFO San Francisco-HLN Helena

26h 38m1 stop Seattle/Tacoma Intl

5:08 pm - 7:59 pmHLN Helena-SFO San Francisco

27h 51m1 stop Seattle/Tacoma Intl

$378Alaska Airlines

Fri, Jan 29 - Sun, Jan 31

9:45 am - 4:12 pmSFO San Francisco-HLN Helena

5h 27m1 stop Seattle/Tacoma Intl

4:49 pm - 8:56 amHLN Helena-SFO San Francisco

17h 07m2 stops Seattle/Tacoma Intl San Diego

$381Alaska Airlines

Sat, Dec 5 - Tue, Dec 8

6:00 am - 12:30 pmSFO San Francisco-HLN Helena

5h 30m1 stop Salt Lake City

1:10 pm - 11:43 pmHLN Helena-SFO San Francisco

11h 33m2 stops Salt Lake City Seattle/Tacoma Intl

$399Delta

Tue, Dec 8 - Fri, Dec 11

11:50 am - 10:32 pmSFO San Francisco-HLN Helena

9h 42m2 stops Los Angeles Salt Lake City

1:10 pm - 8:18 pmHLN Helena-SFO San Francisco

8h 08m2 stops Salt Lake City Seattle/Tacoma Intl

$404Delta

Tue, Dec 8 - Fri, Dec 11

6:00 am - 12:30 pmSFO San Francisco-HLN Helena

5h 30m1 stop Salt Lake City

1:10 pm - 11:43 pmHLN Helena-SFO San Francisco

11h 33m2 stops Salt Lake City Seattle/Tacoma Intl

$427Delta

Tue, Dec 1 - Fri, Dec 4

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Alaska Airlines flights from San Francisco to Helena

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

Alaska Airlines

Dec 5

SFO7:00 amSan Francisco

8h 12m

1 stop

HLN4:12 pmHelena

Dec 8

HLN4:49 pmHelena

26h 18m

1 stop

SFO6:07 pmSan Francisco

$333

Alaska Airlines

Dec 5

SFO7:00 amSan Francisco

8h 12m

1 stop

HLN4:12 pmHelena

Dec 8

HLN4:49 pmHelena

26h 18m

1 stop

SFO6:07 pmSan Francisco

$343

Alaska Airlines

Dec 8

SFO5:50 pmSan Francisco

21h 22m

1 stop

HLN4:12 pmHelena

Dec 11

HLN4:49 pmHelena

26h 23m

1 stop

SFO6:12 pmSan Francisco

$348

United Airlines flights from San Francisco to Helena

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

United Airlines

Dec 5

SFO6:33 pmSan Francisco

18h 19m

2 stops

HLN1:52 pmHelena

Dec 8

HLN2:35 pmHelena

23h 15m

2 stops

SFO12:50 pmSan Francisco

$609

United Airlines

Dec 5

SFO6:33 pmSan Francisco

18h 19m

2 stops

HLN1:52 pmHelena

Dec 8

HLN2:35 pmHelena

23h 15m

2 stops

SFO12:50 pmSan Francisco

$614

United Airlines

Nov 19

SFO6:16 amSan Francisco

6h 24m

1 stop

HLN1:40 pmHelena

Nov 23

HLN2:23 pmHelena

7h 47m

1 stop

SFO9:10 pmSan Francisco

$765

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

San FranciscoHelena

SFO San Francisco - HLN Helena

SFOHLN

San Francisco

Tue 12/1

8:59 pm-12:30 pm

2 stops14h 31m

Helena

Fri 12/4

1:10 pm-11:43 pm

2 stops11h 33m

$323

San FranciscoHelena

SFO San Francisco - HLN Helena

SFOHLN

San Francisco

Tue 12/1

8:59 pm-12:30 pm

2 stops14h 31m

Helena

Thu 12/3

7:03 am-5:16 pm

2 stops11h 13m

$323

San FranciscoHelena

SFO San Francisco - HLN Helena

SFOHLN

San Francisco

Sat 12/5

7:00 am-4:12 pm

1 stop8h 12m

Helena

Tue 12/8

4:49 pm-6:07 pm

1 stop26h 18m

$333

San FranciscoHelena

SFO San Francisco - HLN Helena

SFOHLN

San Francisco

Sat 12/5

7:00 am-4:12 pm

1 stop8h 12m

Helena

Tue 12/8

4:49 pm-6:07 pm

1 stop26h 18m

$343

San FranciscoHelena

SFO San Francisco - HLN Helena

SFOHLN

San Francisco

Tue 12/8

5:50 pm-4:12 pm

1 stop21h 22m

Helena

Fri 12/11

4:49 pm-6:12 pm

1 stop26h 23m

$348

San FranciscoHelena

SFO San Francisco - HLN Helena

SFOHLN

San Francisco

Fri 1/29

12:53 pm-4:31 pm

1 stop26h 38m

Helena

Sun 1/31

5:08 pm-7:59 pm

1 stop27h 51m

$378

San FranciscoHelena

SFO San Francisco - HLN Helena

SFOHLN

San Francisco

Sat 12/5

9:45 am-4:12 pm

1 stop5h 27m

Helena

Tue 12/8

4:49 pm-8:56 am

2 stops17h 07m

$381

Quickest round-trip

San FranciscoHelena

SFO San Francisco - HLN Helena

SFOHLN

San Francisco

Tue 12/8

6:00 am-12:30 pm

1 stop5h 30m

Helena

Fri 12/11

1:10 pm-11:43 pm

2 stops11h 33m

$399

San FranciscoHelena

SFO San Francisco - HLN Helena

SFOHLN

San Francisco

Tue 12/8

11:50 am-10:32 pm

2 stops9h 42m

Helena

Fri 12/11

1:10 pm-8:18 pm

2 stops8h 08m

$404

San FranciscoHelena

SFO San Francisco - HLN Helena

SFOHLN

San Francisco

Tue 12/1

6:00 am-12:30 pm

1 stop5h 30m

Helena

Fri 12/4

1:10 pm-11:43 pm

2 stops11h 33m

$427

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 San Francisco to Helena

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 San Francisco to Helena?

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

What airlines fly to Helena?

United Airlines, Alaska Airlines and Delta are the top three most popular airlines that fly to Helena from San Francisco according to our data. United Airlines is the first choice among our users, with 45% of people opting to fly with this airline when traveling to Helena. Keep in mind that there are 4 different airlines that fly to Helena on a routine basis, so you have a few additional options to choose from.

When to book flights from San Francisco to Helena

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

Estimated round-trip price

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

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

Best Price Found	$212
Fastest flight time	6h 24m
Direct flights	None

The best one-way flight to Helena from San Francisco in the past 72 hours is $212. The best round-trip flight deal from San Francisco to Helena found on momondo in the last 72 hours is $323.

The fastest flight from San Francisco to Helena takes 6h 24m

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

Search flight deals

Frequently asked questions about flying from San Francisco to Helena

How far is San Francisco to Helena by plane?
A flight from San Francisco to Helena will travel around 805.7 mi. Flights usually cover this in 6h 24m, depending on flying conditions and air traffic around both airports.
When did momondo last update prices for flights from San Francisco Airport to Helena Airport?
Prices for flights from San Francisco Airport to Helena Airport refresh daily.
How many operators does momondo search for flights from San Francisco Airport to Helena Airport?
As of November 2026, there is 1 operator available to choose from for flights from San Francisco Airport to Helena Airport.
How old do you have to be to fly from San Francisco Airport to Helena Airport?
Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from San Francisco Airport to Helena Airport.
What documentation or ID do you need to fly to Helena Airport?
The required travel and health documents for your Helena Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Helena Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.
What is the most popular airline from San Francisco to Helena?
Based on momondo bookings for this flight route, the most popular airline on flight routes from San Francisco to Helena is Alaska Airlines (100% of total bookings).

Best airlines flying from San Francisco to Helena

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

Airline	Rating	Free Cancellation	Price
Alaska Airlines	PriceFrom $291	Free Cancellation	Rating 7.9 13,147 reviews		Search Alaska Airlines flights

Why use momondo?

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

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

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

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

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

Once you have performed a search for San Francisco to Helena flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

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

Yes momondo offers price alerts on flights to Helena from San Francisco. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.