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

Alaska Airlines, Delta, and United 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 43% 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 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 2025, 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.

$177 Cheap Flights from San Francisco to Helena in 2025/26

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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.

7:35 am - 5:51 pmSFO-HLN

9h 16m1 stop

6:28 pm - 10:45 pmHLN-SFO

5h 17m1 stop

$264Hawaiian Airlines

Find Deal

Sat, Dec 6 - Sat, Dec 13

1:58 pm - 10:30 pmSFO-HLN

7h 32m2 stops

5:30 am - 3:57 pmHLN-SFO

11h 27m2 stops

$283Delta

Find Deal

Sat, Dec 6 - Sat, Dec 13

6:00 am - 12:25 pmSFO-HLN

5h 25m1 stop

5:30 am - 3:57 pmHLN-SFO

11h 27m2 stops

$315Delta

Find Deal

Sat, Dec 6 - Sat, Dec 13

5:45 pm - 3:43 pmSFO-HLN

20h 58m1 stop

4:10 pm - 9:11 amHLN-SFO

18h 01m1 stop

$322Alaska Airlines

Find Deal

Sat, Feb 14 - Tue, Feb 17

9:40 pm - 3:43 pmSFO-HLN

17h 03m1 stop

4:10 pm - 9:11 amHLN-SFO

18h 01m1 stop

$342Alaska Airlines

Find Deal

Fri, Feb 13 - Mon, Feb 16

9:10 am - 3:38 pmSFO-HLN

5h 28m1 stop

4:10 pm - 8:10 pmHLN-SFO

5h 00m1 stop

$348Alaska Airlines

Find Deal

Sat, Apr 25 - Wed, Apr 29

9:10 am - 3:38 pmSFO-HLN

5h 28m1 stop

4:10 pm - 9:51 amHLN-SFO

18h 41m2 stops

$397Alaska Airlines

Find Deal

Sat, Apr 25 - Wed, Apr 29

8:00 am - 3:43 pmSFO-HLN

6h 43m2 stops

4:10 pm - 10:18 pmHLN-SFO

7h 08m1 stop

$441Alaska Airlines

Find Deal

Sat, Feb 14 - Tue, Feb 17

6:00 am - 3:38 pmSFO-HLN

8h 38m2 stops

4:10 pm - 9:00 amHLN-SFO

17h 50m2 stops

$445Alaska Airlines

Find Deal

Sat, Apr 25 - Wed, Apr 29

9:57 pm - 5:51 pmSFO-HLN

18h 54m2 stops

6:28 pm - 10:45 pmHLN-SFO

5h 17m1 stop

$446Multiple Airlines

Find Deal

Sat, Dec 6 - Sat, Dec 13

Delta flights from San Francisco to Helena

Our best Delta deals on San Francisco to Helena flight tickets

Delta

Dec 6

SFO1:58 pmSan Francisco

7h 32m

2 stops

HLN10:30 pmHelena

Dec 13

HLN5:30 amHelena

11h 27m

2 stops

SFO3:57 pmSan Francisco

$283

Find similar

Delta

Dec 6

SFO6:00 amSan Francisco

5h 25m

1 stop

HLN12:25 pmHelena

Dec 13

HLN5:30 amHelena

11h 27m

2 stops

SFO3:57 pmSan Francisco

$315

Find similar

Delta

Nov 26

SFO5:00 pmSan Francisco

4h 30m

1 stop

HLN10:30 pmHelena

Nov 30

HLN5:30 amHelena

4h 26m

1 stop

SFO8:56 amSan Francisco

$838

Find similar

Alaska Airlines flights from San Francisco to Helena

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

Alaska Airlines

Feb 14

SFO5:45 pmSan Francisco

20h 58m

1 stop

HLN3:43 pmHelena

Feb 17

HLN4:10 pmHelena

18h 01m

1 stop

SFO9:11 amSan Francisco

$322

Find similar

Alaska Airlines

Feb 13

SFO9:40 pmSan Francisco

17h 03m

1 stop

HLN3:43 pmHelena

Feb 16

HLN4:10 pmHelena

18h 01m

1 stop

SFO9:11 amSan Francisco

$342

Find similar

Alaska Airlines

Apr 25

SFO9:10 amSan Francisco

5h 28m

1 stop

HLN3:38 pmHelena

Apr 29

HLN4:10 pmHelena

5h 00m

1 stop

SFO8:10 pmSan Francisco

$348

Find similar

Fly from

Fly to

Route

Depart

Return

Price

San FranciscoHelena

SFO - HLN

SFOHLN

San Francisco

Sat 12/6

7:35 am-5:51 pm

1 stop9h 16m

Helena

Sat 12/13

6:28 pm-10:45 pm

1 stop5h 17m

$264

San FranciscoHelena

SFO - HLN

SFOHLN

San Francisco

Sat 12/6

1:58 pm-10:30 pm

2 stops7h 32m

Helena

Sat 12/13

5:30 am-3:57 pm

2 stops11h 27m

$283

San FranciscoHelena

SFO - HLN

SFOHLN

San Francisco

Sat 12/6

6:00 am-12:25 pm

1 stop5h 25m

Helena

Sat 12/13

5:30 am-3:57 pm

2 stops11h 27m

$315

San FranciscoHelena

SFO - HLN

SFOHLN

San Francisco

Sat 2/14

5:45 pm-3:43 pm

1 stop20h 58m

Helena

Tue 2/17

4:10 pm-9:11 am

1 stop18h 01m

$322

San FranciscoHelena

SFO - HLN

SFOHLN

San Francisco

Fri 2/13

9:40 pm-3:43 pm

1 stop17h 03m

Helena

Mon 2/16

4:10 pm-9:11 am

1 stop18h 01m

$342

San FranciscoHelena

SFO - HLN

SFOHLN

San Francisco

Sat 4/25

9:10 am-3:38 pm

1 stop5h 28m

Helena

Wed 4/29

4:10 pm-8:10 pm

1 stop5h 00m

$348

San FranciscoHelena

SFO - HLN

SFOHLN

San Francisco

Sat 4/25

9:10 am-3:38 pm

1 stop5h 28m

Helena

Wed 4/29

4:10 pm-9:51 am

2 stops18h 41m

$397

San FranciscoHelena

SFO - HLN

SFOHLN

San Francisco

Sat 2/14

8:00 am-3:43 pm

2 stops6h 43m

Helena

Tue 2/17

4:10 pm-10:18 pm

1 stop7h 08m

$441

San FranciscoHelena

SFO - HLN

SFOHLN

San Francisco

Sat 4/25

6:00 am-3:38 pm

2 stops8h 38m

Helena

Wed 4/29

4:10 pm-9:00 am

2 stops17h 50m

$445

San FranciscoHelena

SFO - HLN

SFOHLN

San Francisco

Sat 12/6

9:57 pm-5:51 pm

2 stops18h 54m

Helena

Sat 12/13

6:28 pm-10:45 pm

1 stop5h 17m

$446

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 15 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

Prices

Airlines

What is the cheapest day to depart on your flight to Helena?

The cheapest day to depart from San Francisco to Helena is on a Monday. Travelers who choose to depart for Helena on a Monday will often find tickets for as low as $350. The most expensive day to fly to Helena is Sunday, with ticket prices averaging around $706.

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

According to our data, the cheapest time of day to fly to Helena is in the afternoon. momondo users have found flights departing from San Francisco to Helena in the afternoon for as low as $386. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. In contrast, the most expensive time of day to depart to Helena is at noon when prices are around $950.

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

Direct flights	None

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 30m, 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 2025, 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 (52% of total bookings). The next most popular airline is Delta (48%).

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 8,004 reviews		Search Delta flights
Alaska Airlines	PriceFrom $292	Free Cancellation	Rating 8.0 11,241 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.