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 March 2026, there are 2 operators 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.

$175 Cheap Flights from San Francisco to Helena in 2026

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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.

9:00 am - 5:45 pm

SFO

HLN

7h 45m

1 stop

6:22 pm - 10:28 pm

HLN

SFO

5h 06m

1 stop

$329Alaska Airlines

Tue, Apr 28 - Sat, May 2

5:31 pm - 5:45 pm

SFO

HLN

23h 14m

1 stop

6:22 pm - 10:28 pm

HLN

SFO

5h 06m

1 stop

$346Alaska Airlines

Tue, Apr 28 - Sat, May 2

5:57 pm - 5:45 pm

SFO

HLN

22h 48m

2 stops

6:22 pm - 10:28 pm

HLN

SFO

5h 06m

1 stop

$363Alaska Airlines

Tue, Apr 28 - Sat, May 2

7:00 am - 3:31 pm

SFO

HLN

7h 31m

1 stop

4:08 pm - 9:27 pm

HLN

SFO

6h 19m

1 stop

$421Alaska Airlines

Sat, Aug 29 - Sat, Sep 5

7:00 am - 5:45 pm

SFO

HLN

9h 45m

1 stop

6:22 pm - 10:28 pm

HLN

SFO

5h 06m

1 stop

$426Alaska Airlines

Fri, May 1 - Wed, May 6

5:40 am - 12:21 pm

SFO

HLN

5h 41m

1 stop

5:40 am - 8:59 am

HLN

SFO

4h 19m

1 stop

$443Delta

Sun, Apr 12 - Tue, Apr 14

7:40 pm - 5:45 pm

SFO

HLN

21h 05m

2 stops

6:22 pm - 9:56 am

HLN

SFO

16h 34m

2 stops

$447Alaska Airlines

Tue, Apr 28 - Sat, May 2

8:28 pm - 4:49 pm

SFO

HLN

19h 21m

1 stop

5:26 pm - 11:59 pm

HLN

SFO

7h 33m

1 stop

$450Alaska Airlines

Fri, Jul 17 - Thu, Jul 30

8:20 am - 3:31 pm

SFO

HLN

6h 11m

1 stop

4:08 pm - 11:49 pm

HLN

SFO

8h 41m

2 stops

$467Alaska Airlines

Fri, Aug 28 - Tue, Sep 1

8:01 pm - 5:45 pm

SFO

HLN

20h 44m

2 stops

6:22 pm - 10:17 am

HLN

SFO

16h 55m

2 stops

$475Alaska Airlines

Sun, Apr 12 - Tue, Apr 14

Alaska Airlines flights from San Francisco to Helena

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

Alaska Airlines

Apr 28

SFO9:00 amSan Francisco

7h 45m

1 stop

HLN5:45 pmHelena

May 2

HLN6:22 pmHelena

5h 06m

1 stop

SFO10:28 pmSan Francisco

$329

Alaska Airlines

Apr 28

SFO5:31 pmSan Francisco

23h 14m

1 stop

HLN5:45 pmHelena

May 2

HLN6:22 pmHelena

5h 06m

1 stop

SFO10:28 pmSan Francisco

$346

Alaska Airlines

Apr 28

SFO5:57 pmSan Francisco

22h 48m

2 stops

HLN5:45 pmHelena

May 2

HLN6:22 pmHelena

5h 06m

1 stop

SFO10:28 pmSan Francisco

$363

Delta flights from San Francisco to Helena

Our best Delta deals on San Francisco to Helena flight tickets

Delta

Apr 12

SFO5:40 amSan Francisco

5h 41m

1 stop

HLN12:21 pmHelena

Apr 14

HLN5:40 amHelena

4h 19m

1 stop

SFO8:59 amSan Francisco

$443

Delta

Aug 29

SFO7:00 amSan Francisco

14h 34m

2 stops

HLN10:34 pmHelena

Sep 3

HLN12:50 pmHelena

6h 45m

1 stop

SFO6:35 pmSan Francisco

$478

Delta

Jul 13

SFO6:00 amSan Francisco

5h 15m

1 stop

HLN12:15 pmHelena

Jul 17

HLN12:55 pmHelena

4h 17m

1 stop

SFO4:12 pmSan Francisco

$488

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

San FranciscoHelena

SFO - HLN

SFOHLN

San Francisco

Tue 4/28

9:00 am-5:45 pm

1 stop7h 45m

Helena

Sat 5/2

6:22 pm-10:28 pm

1 stop5h 06m

$329

San FranciscoHelena

SFO - HLN

SFOHLN

San Francisco

Tue 4/28

5:31 pm-5:45 pm

1 stop23h 14m

Helena

Sat 5/2

6:22 pm-10:28 pm

1 stop5h 06m

$346

San FranciscoHelena

SFO - HLN

SFOHLN

San Francisco

Tue 4/28

5:57 pm-5:45 pm

2 stops22h 48m

Helena

Sat 5/2

6:22 pm-10:28 pm

1 stop5h 06m

$363

San FranciscoHelena

SFO - HLN

SFOHLN

San Francisco

Sat 8/29

7:00 am-3:31 pm

1 stop7h 31m

Helena

Sat 9/5

4:08 pm-9:27 pm

1 stop6h 19m

$421

San FranciscoHelena

SFO - HLN

SFOHLN

San Francisco

Fri 5/1

7:00 am-5:45 pm

1 stop9h 45m

Helena

Wed 5/6

6:22 pm-10:28 pm

1 stop5h 06m

$426

Quickest round-trip

San FranciscoHelena

SFO - HLN

SFOHLN

San Francisco

Sun 4/12

5:40 am-12:21 pm

1 stop5h 41m

Helena

Tue 4/14

5:40 am-8:59 am

1 stop4h 19m

$443

San FranciscoHelena

SFO - HLN

SFOHLN

San Francisco

Tue 4/28

7:40 pm-5:45 pm

2 stops21h 05m

Helena

Sat 5/2

6:22 pm-9:56 am

2 stops16h 34m

$447

San FranciscoHelena

SFO - HLN

SFOHLN

San Francisco

Fri 7/17

8:28 pm-4:49 pm

1 stop19h 21m

Helena

Thu 7/30

5:26 pm-11:59 pm

1 stop7h 33m

$450

San FranciscoHelena

SFO - HLN

SFOHLN

San Francisco

Fri 8/28

8:20 am-3:31 pm

1 stop6h 11m

Helena

Tue 9/1

4:08 pm-11:49 pm

2 stops8h 41m

$467

San FranciscoHelena

SFO - HLN

SFOHLN

San Francisco

Sun 4/12

8:01 pm-5:45 pm

2 stops20h 44m

Helena

Tue 4/14

6:22 pm-10:17 am

2 stops16h 55m

$475

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?

Delta and Alaska Airlines 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 46% of people opting to fly with this airline when traveling to Helena. Keep in mind that there are 7 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

Fastest flight time	4h 24m
Direct flights	None

The fastest flight from San Francisco to Helena takes 4h 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

How far is San Francisco to Helena by plane?
A flight from San Francisco to Helena will travel around 805.5 mi. Flights usually cover this in 4h 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 March 2026, there are 2 operators 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 (65% of total bookings). The next most popular airline is Delta (35%).

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
Delta	PriceFrom $215	Free Cancellation	Rating 7.9 8,321 reviews		Search Delta flights
Alaska Airlines	PriceFrom $292	Free Cancellation	Rating 7.9 12,101 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.