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.

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

Alaska Airlines is the most popular carrier operating from San Francisco to Helena

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 December 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.

$119 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

Last minute

Cheap round-trip flights

Enter your travel dates to find the best prices.

12:00 pm - 6:11 pm

SFO

HLN

5h 11m1 stop

6:48 pm - 11:03 pm

HLN

SFO

5h 15m1 stop

$238Alaska Airlines

mié., ene. 28 - sáb., ene. 31

8:42 am - 3:59 pm

SFO

HLN

6h 17m1 stop

4:36 pm - 8:36 pm

HLN

SFO

5h 00m1 stop

$278Alaska Airlines

jue., feb. 26 - dom., mar. 1

7:55 pm - 6:11 pm

SFO

HLN

21h 16m2 stops

6:48 pm - 11:03 pm

HLN

SFO

5h 15m1 stop

$287Alaska Airlines

mié., ene. 28 - sáb., ene. 31

12:00 pm - 6:11 pm

SFO

HLN

5h 11m1 stop

6:48 pm - 9:55 pm

HLN

SFO

28h 07m2 stops

$297Alaska Airlines

vie., ene. 30 - dom., feb. 1

8:42 am - 3:59 pm

SFO

HLN

6h 17m1 stop

4:36 pm - 11:55 pm

HLN

SFO

8h 19m2 stops

$342Alaska Airlines

jue., feb. 26 - dom., mar. 1

7:55 pm - 6:11 pm

SFO

HLN

21h 16m2 stops

6:48 pm - 12:23 pm

HLN

SFO

18h 35m2 stops

$349Alaska Airlines

mié., ene. 28 - sáb., ene. 31

5:40 am - 12:19 pm

SFO

HLN

5h 39m1 stop

12:59 pm - 6:19 pm

HLN

SFO

6h 20m1 stop

$369Delta

mar., mar. 31 - vie., abr. 3

6:18 pm - 6:11 pm

SFO

HLN

22h 53m1 stop

6:48 pm - 11:03 pm

HLN

SFO

5h 15m1 stop

$370Alaska Airlines

dom., ene. 11 - jue., ene. 15

7:57 am - 6:11 pm

SFO

HLN

9h 14m2 stops

6:48 pm - 12:23 pm

HLN

SFO

18h 35m2 stops

$383Alaska Airlines

vie., ene. 30 - dom., feb. 1

9:10 am - 3:38 pm

SFO

HLN

5h 28m1 stop

4:10 pm - 9:58 am

HLN

SFO

18h 48m2 stops

$451Alaska Airlines

mar., mar. 31 - vie., abr. 3

Alaska Airlines flights from San Francisco to Helena

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

Alaska Airlines

Jan 28

SFO12:00 pmSan Francisco

5h 11m

1 stop

HLN6:11 pmHelena

Jan 31

HLN6:48 pmHelena

5h 15m

1 stop

SFO11:03 pmSan Francisco

$238

Find similar

Alaska Airlines

Jan 28

SFO1:19 pmSan Francisco

27h 52m

2 stops

HLN6:11 pmHelena

Jan 31

HLN6:48 pmHelena

5h 15m

1 stop

SFO11:03 pmSan Francisco

$287

Find similar

Alaska Airlines

Jan 30

SFO12:00 pmSan Francisco

5h 11m

1 stop

HLN6:11 pmHelena

Feb 1

HLN6:48 pmHelena

28h 07m

2 stops

SFO9:55 pmSan Francisco

$297

Find similar

Delta flights from San Francisco to Helena

Our best Delta deals on San Francisco to Helena flight tickets

Delta

Mar 31

SFO5:40 amSan Francisco

5h 39m

1 stop

HLN12:19 pmHelena

Apr 3

HLN12:59 pmHelena

6h 20m

1 stop

SFO6:19 pmSan Francisco

$369

Find similar

Delta

Dec 25

SFO4:55 pmSan Francisco

4h 35m

1 stop

HLN10:30 pmHelena

Dec 26

HLN5:30 amHelena

4h 33m

1 stop

SFO9:03 amSan Francisco

$867

Find similar

Delta

Dec 21

SFO4:55 pmSan Francisco

4h 35m

1 stop

HLN10:30 pmHelena

Dec 23

HLN1:11 pmHelena

6h 10m

1 stop

SFO6:21 pmSan Francisco

$888

Find similar

Fly from

Fly to

Route

Depart

Return

Price

San FranciscoHelena

SFO - HLN

SFOHLN

San Francisco

mié. 1/28

12:00 pm-6:11 pm

1 stop5h 11m

Helena

sáb. 1/31

6:48 pm-11:03 pm

1 stop5h 15m

$238

San FranciscoHelena

SFO - HLN

SFOHLN

San Francisco

jue. 2/26

8:42 am-3:59 pm

1 stop6h 17m

Helena

dom. 3/1

4:36 pm-8:36 pm

1 stop5h 00m

$278

San FranciscoHelena

SFO - HLN

SFOHLN

San Francisco

mié. 1/28

7:55 pm-6:11 pm

2 stops21h 16m

Helena

sáb. 1/31

6:48 pm-11:03 pm

1 stop5h 15m

$287

San FranciscoHelena

SFO - HLN

SFOHLN

San Francisco

vie. 1/30

12:00 pm-6:11 pm

1 stop5h 11m

Helena

dom. 2/1

6:48 pm-9:55 pm

2 stops28h 07m

$297

San FranciscoHelena

SFO - HLN

SFOHLN

San Francisco

jue. 2/26

8:42 am-3:59 pm

1 stop6h 17m

Helena

dom. 3/1

4:36 pm-11:55 pm

2 stops8h 19m

$342

San FranciscoHelena

SFO - HLN

SFOHLN

San Francisco

mié. 1/28

7:55 pm-6:11 pm

2 stops21h 16m

Helena

sáb. 1/31

6:48 pm-12:23 pm

2 stops18h 35m

$349

San FranciscoHelena

SFO - HLN

SFOHLN

San Francisco

mar. 3/31

5:40 am-12:19 pm

1 stop5h 39m

Helena

vie. 4/3

12:59 pm-6:19 pm

1 stop6h 20m

$369

San FranciscoHelena

SFO - HLN

SFOHLN

San Francisco

dom. 1/11

6:18 pm-6:11 pm

1 stop22h 53m

Helena

jue. 1/15

6:48 pm-11:03 pm

1 stop5h 15m

$370

San FranciscoHelena

SFO - HLN

SFOHLN

San Francisco

vie. 1/30

7:57 am-6:11 pm

2 stops9h 14m

Helena

dom. 2/1

6:48 pm-12:23 pm

2 stops18h 35m

$383

San FranciscoHelena

SFO - HLN

SFOHLN

San Francisco

mar. 3/31

9:10 am-3:38 pm

1 stop5h 28m

Helena

vie. 4/3

4:10 pm-9:58 am

2 stops18h 48m

$451

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 16 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

Fastest flight time	5h 25m
Direct flights	None

The fastest flight from San Francisco to Helena takes 5h 25m

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 5h 25m, 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 December 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 (55% of total bookings). The next most popular airline is Delta (45%).

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 8,008 reviews		Search Delta flights
Alaska Airlines	PriceFrom $317	Free Cancellation	Rating 8.0 11,452 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.