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 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.

$243 Cheap Flights from San Francisco to Helena in 2026/27

Find the cheapest flights from San Francisco to Helena

Round-trip

One-way

Last minute

Cheap round-trip flights

Enter your travel dates to find the best prices.

10:25 am - 4:23 pmSFO San Francisco-HLN Helena

4h 58m1 stop Seattle/Tacoma Intl

5:00 pm - 10:56 pmHLN Helena-SFO San Francisco

6h 56m1 stop Seattle/Tacoma Intl

$353Alaska Airlines

Sat, Jan 30 - Tue, Feb 2

9:25 am - 4:23 pmSFO San Francisco-HLN Helena

5h 58m1 stop Seattle/Tacoma Intl

5:00 pm - 1:38 pmHLN Helena-SFO San Francisco

21h 38m1 stop Seattle/Tacoma Intl

$353Alaska Airlines

Sat, Jan 30 - Tue, Feb 2

9:43 am - 4:49 pmSFO San Francisco-HLN Helena

6h 06m1 stop Seattle/Tacoma Intl

5:26 pm - 8:49 amHLN Helena-SFO San Francisco

16h 23m1 stop Seattle/Tacoma Intl

$368Alaska Airlines

Sat, Oct 24 - Mon, Oct 26

10:25 am - 4:23 pmSFO San Francisco-HLN Helena

4h 58m1 stop Seattle/Tacoma Intl

5:00 pm - 10:56 pmHLN Helena-SFO San Francisco

6h 56m1 stop Seattle/Tacoma Intl

$373Alaska Airlines

Sat, Jan 30 - Tue, Feb 2

8:46 pm - 4:49 pmSFO San Francisco-HLN Helena

19h 03m1 stop Seattle/Tacoma Intl

5:26 pm - 11:52 pmHLN Helena-SFO San Francisco

7h 26m1 stop Seattle/Tacoma Intl

$393Alaska Airlines

Fri, Oct 23 - Mon, Oct 26

10:25 am - 4:23 pmSFO San Francisco-HLN Helena

4h 58m1 stop Seattle/Tacoma Intl

5:00 pm - 8:52 amHLN Helena-SFO San Francisco

16h 52m2 stops Seattle/Tacoma Intl San Diego

$401Alaska Airlines

Sat, Jan 30 - Tue, Feb 2

2:40 pm - 10:24 pmSFO San Francisco-HLN Helena

6h 44m2 stops Los Angeles Salt Lake City

1:08 pm - 10:16 pmHLN Helena-SFO San Francisco

10h 08m2 stops Salt Lake City Seattle/Tacoma Intl

$474Delta

Wed, Oct 28 - Tue, Nov 3

5:13 pm - 10:24 pmSFO San Francisco-HLN Helena

4h 11m1 stop Salt Lake City

1:08 pm - 10:16 pmHLN Helena-SFO San Francisco

10h 08m2 stops Salt Lake City Seattle/Tacoma Intl

$489Delta

Sun, Nov 1 - Tue, Nov 3

5:50 am - 12:28 pmSFO San Francisco-HLN Helena

5h 38m1 stop Salt Lake City

7:15 am - 12:24 pmHLN Helena-SFO San Francisco

6h 09m1 stop Salt Lake City

$525Delta

Thu, Oct 29 - Sun, Nov 1

8:58 pm - 12:28 pmSFO San Francisco-HLN Helena

14h 30m2 stops Seattle/Tacoma Intl Salt Lake City

7:15 am - 12:24 pmHLN Helena-SFO San Francisco

6h 09m1 stop Salt Lake City

$531Delta

Fri, Oct 23 - Sun, Oct 25

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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

Jan 30

SFO10:25 amSan Francisco

4h 58m

1 stop

HLN4:23 pmHelena

Feb 2

HLN5:00 pmHelena

6h 56m

1 stop

SFO10:56 pmSan Francisco

$353

Alaska Airlines

Oct 24

SFO9:43 amSan Francisco

6h 06m

1 stop

HLN4:49 pmHelena

Oct 26

HLN5:26 pmHelena

16h 23m

1 stop

SFO8:49 amSan Francisco

$368

Alaska Airlines

Jan 30

SFO10:25 amSan Francisco

4h 58m

1 stop

HLN4:23 pmHelena

Feb 2

HLN5:00 pmHelena

6h 56m

1 stop

SFO10:56 pmSan Francisco

$373

Delta flights from San Francisco to Helena

Our best Delta deals on San Francisco to Helena flight tickets

Delta

Oct 28

SFO2:40 pmSan Francisco

6h 44m

2 stops

HLN10:24 pmHelena

Nov 3

HLN1:08 pmHelena

10h 08m

2 stops

SFO10:16 pmSan Francisco

$474

Delta

Nov 1

SFO5:13 pmSan Francisco

4h 11m

1 stop

HLN10:24 pmHelena

Nov 3

HLN1:08 pmHelena

10h 08m

2 stops

SFO10:16 pmSan Francisco

$489

Delta

Oct 29

SFO5:50 amSan Francisco

5h 38m

1 stop

HLN12:28 pmHelena

Nov 1

HLN7:15 amHelena

6h 09m

1 stop

SFO12:24 pmSan Francisco

$525

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

San FranciscoHelena

SFO San Francisco - HLN Helena

SFOHLN

San Francisco

Sat 1/30

10:25 am-4:23 pm

1 stop4h 58m

Helena

Tue 2/2

5:00 pm-10:56 pm

1 stop6h 56m

$353

San FranciscoHelena

SFO San Francisco - HLN Helena

SFOHLN

San Francisco

Sat 1/30

9:25 am-4:23 pm

1 stop5h 58m

Helena

Tue 2/2

5:00 pm-1:38 pm

1 stop21h 38m

$353

San FranciscoHelena

SFO San Francisco - HLN Helena

SFOHLN

San Francisco

Sat 10/24

9:43 am-4:49 pm

1 stop6h 06m

Helena

Mon 10/26

5:26 pm-8:49 am

1 stop16h 23m

$368

San FranciscoHelena

SFO San Francisco - HLN Helena

SFOHLN

San Francisco

Sat 1/30

10:25 am-4:23 pm

1 stop4h 58m

Helena

Tue 2/2

5:00 pm-10:56 pm

1 stop6h 56m

$373

San FranciscoHelena

SFO San Francisco - HLN Helena

SFOHLN

San Francisco

Fri 10/23

8:46 pm-4:49 pm

1 stop19h 03m

Helena

Mon 10/26

5:26 pm-11:52 pm

1 stop7h 26m

$393

San FranciscoHelena

SFO San Francisco - HLN Helena

SFOHLN

San Francisco

Sat 1/30

10:25 am-4:23 pm

1 stop4h 58m

Helena

Tue 2/2

5:00 pm-8:52 am

2 stops16h 52m

$401

San FranciscoHelena

SFO San Francisco - HLN Helena

SFOHLN

San Francisco

Wed 10/28

2:40 pm-10:24 pm

2 stops6h 44m

Helena

Tue 11/3

1:08 pm-10:16 pm

2 stops10h 08m

$474

San FranciscoHelena

SFO San Francisco - HLN Helena

SFOHLN

San Francisco

Sun 11/1

5:13 pm-10:24 pm

1 stop4h 11m

Helena

Tue 11/3

1:08 pm-10:16 pm

2 stops10h 08m

$489

Quickest round-trip

San FranciscoHelena

SFO San Francisco - HLN Helena

SFOHLN

San Francisco

Thu 10/29

5:50 am-12:28 pm

1 stop5h 38m

Helena

Sun 11/1

7:15 am-12:24 pm

1 stop6h 09m

$525

San FranciscoHelena

SFO San Francisco - HLN Helena

SFOHLN

San Francisco

Fri 10/23

8:58 pm-12:28 pm

2 stops14h 30m

Helena

Sun 10/25

7:15 am-12:24 pm

1 stop6h 09m

$531

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	$243
Fastest flight time	4h 05m
Direct flights	None

The best one-way flight to Helena from San Francisco in the past 72 hours is $243. The best round-trip flight deal from San Francisco to Helena found on momondo in the last 72 hours is $353.

The fastest flight from San Francisco to Helena takes 4h 05m

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 4h 05m, 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 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.

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.