Which airports can I use when flying from Helena to San Francisco?

Flights from Helena to San Francisco usually depart from Helena (HLN) and arrive at San Francisco (SFO).

What cabin classes can I book on flights from Helena to San Francisco?

Only Economy Class is available on flights from Helena to San Francisco.

Which airports do connecting flights from Helena to San Francisco pass through?

One-stop flights from Helena to San Francisco most commonly connect through: • Salt Lake City (SLC) - 57% of one-stop connections • Seattle/Tacoma Intl (SEA) - 39% of one-stop connections • Denver Intl (DEN) - 4% of one-stop connections Salt Lake City (SLC) handles the largest share of one-stop connections on this route.

Can I save money by using flexible dates for flights from Helena to San Francisco?

Yes. Being flexible with your travel dates can save you up to 70% on the Helena to San Francisco route. Thursday is the cheapest departure day at $278 round-trip on average, while Monday is the most expensive at $908, a difference of $630. KAYAK's flexible dates feature shows options up to 3 days before and after your selected dates, making it easier to compare nearby fares.

What popular places can I visit in San Francisco?

Some of the most popular sights in San Francisco are Fisherman's Wharf, Union Square and Moscone Center. These are among the most viewed places in San Francisco on KAYAK.

How long is a flight from Helena to San Francisco?

There are currently no nonstop flights available from Helena to San Francisco. Flights with 1 layover take between 4h 58m and 6h 24m in total, depending on the connection.

Do I need a passport to fly from Helena to San Francisco?

No, a passport is not required for this domestic route, but you will need a real ID-compliant driver's license, a state ID, or another TSA-accepted form of identification.

Have flight prices from Helena to San Francisco changed much recently?

Yes. Based on fares seen in the past 5 days, round-trip prices on this route showed a wide range, from about $388 to $1,793. That means the highest observed fare was about 5x higher than the lowest one.

How are flight prices from Helena to San Francisco looking right now?

One-way fares from Helena to San Francisco are currently lower than usual. Average one-way flight prices are about $268, which is 70% below the typical average for this route.

How much time can I save by choosing a different layover airport from Helena to San Francisco?

Flying via Salt Lake City (SLC) gives the shortest average 1-stop total travel time at 4h 58m, compared with 5h 59m via Denver Intl (DEN) and 6h 24m via Seattle/Tacoma Intl (SEA).

What is the time difference between Helena and San Francisco?

San Francisco is 1 hour behind Helena (Pacific Time vs Mountain Time). Plan for the time shift when scheduling connections or first-day activities.

What car rental options are available at San Francisco Airport (SFO)?

San Francisco Airport (SFO) hosts 5 major car rental companies, with daily rates starting from around $15 for economy cars. Top options include: • Thrifty • Europcar • Dollar • Hertz • Fox

How much should I expect to pay for a Helena to San Francisco flight?

Round-trip flights from Helena to San Francisco range from $258 to $533, with an average of $357 over the past 12 months. Anything below $258 counts as a good deal.

What is the cheapest airline to fly from Helena to San Francisco?

Alaska Airlines ($388) and Delta ($538) are the cheapest airlines to fly round-trip from Helena to San Francisco according to KAYAK data over the last 5 days.

What is the most popular layover airport when flying from Helena to San Francisco?

Salt Lake City (SLC) is the most popular layover for the Helena to San Francisco route. 57% of KAYAK users who booked 1-stop round-trips over the past 3 months connected via SLC.

What is the cheapest layover airport when flying from Helena to San Francisco?

Flights via Seattle/Tacoma Intl (SEA) offer the most affordable fares, with an average round-trip price of $288. Based on KAYAK data over the past 3 months.

When flying from Helena to San Francisco which airport offers the shortest layover?

Salt Lake City (SLC) had the shortest average connection time for Helena to San Francisco layovers at 192 minutes over the past 3 months.

$237 CHEAP FLIGHTS from Helena to San Francisco (HLN - SFO)

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Filter searches by price, airline and more to find your best flights.

Cheapest round-trip

$388

Typical prices: $258-$533

Alaska Airlines

Wed 10/17Wed 10/24

HLN - SFO • 1 stop

Cheapest one-way

$237

Typical prices: $774-$887

Alaska Airlines

Wed 10/31

HLN - SFO • 1 stop

When to travel

January

Cheapest • 33% price drop

January

Most popular

Good to know

Top layover airports

Seattle/Tacoma Intl (SEA)

Cheapest • Avg $288 (round-trip)

Salt Lake City (SLC)

Shortest trip • 4h 58m (one-way)

Insights

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Flight Deals

Cheap Flights from Helena to San Francisco (HLN-SFO)

Discover the best prices for you by selecting your travel dates on KAYAK.

Round-trip

One-way

Last minute

Recent round-trip flight deals from Helena to San Francisco

Sat, Oct 17 - Sat, Oct 24

5:26 pm - 10:49 pmHLN Helena-SFO San Francisco

6h 23m1 stop Seattle/Tacoma Intl

4:21 pm - 4:49 pmSFO San Francisco-HLN Helena

23h 28m1 stop Seattle/Tacoma Intl

$388Alaska Airlines

Sat, Jan 30 - Tue, Feb 2

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

6h 56m1 stop Seattle/Tacoma Intl

5:39 pm - 4:23 pmSFO San Francisco-HLN Helena

21h 44m1 stop Seattle/Tacoma Intl

$400Alaska Airlines

Sat, Jan 30 - Tue, Feb 2

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

6h 56m1 stop Seattle/Tacoma Intl

5:39 pm - 4:23 pmSFO San Francisco-HLN Helena

21h 44m1 stop Seattle/Tacoma Intl

$433Alaska Airlines

Fri, Jan 22 - Sun, Jan 24

5:00 pm - 11:01 amHLN Helena-SFO San Francisco

19h 01m1 stop Seattle/Tacoma Intl

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

5h 58m1 stop Seattle/Tacoma Intl

$445Alaska Airlines

Sat, Oct 17 - Sat, Oct 24

5:26 pm - 10:49 pmHLN Helena-SFO San Francisco

6h 23m1 stop Seattle/Tacoma Intl

4:43 pm - 4:49 pmSFO San Francisco-HLN Helena

23h 06m2 stops San Diego Seattle/Tacoma Intl

$461Alaska Airlines

Fri, Jan 15 - Mon, Jan 18

5:00 pm - 11:01 amHLN Helena-SFO San Francisco

19h 01m1 stop Seattle/Tacoma Intl

7:00 am - 4:23 pmSFO San Francisco-HLN Helena

8h 23m1 stop Seattle/Tacoma Intl

$463Alaska Airlines

Sat, Jan 30 - Tue, Feb 2

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

16h 52m2 stops Seattle/Tacoma Intl San Diego

7:00 am - 4:23 pmSFO San Francisco-HLN Helena

8h 23m1 stop Seattle/Tacoma Intl

$466Alaska Airlines

Tue, Oct 13 - Sun, Oct 18

1:08 pm - 10:15 pmHLN Helena-SFO San Francisco

10h 07m2 stops Salt Lake City Los Angeles Los Angeles

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

5h 38m1 stop Salt Lake City

$538Delta

Fri, Oct 9 - Mon, Oct 12

1:08 pm - 8:18 pmHLN Helena-SFO San Francisco

8h 10m2 stops Salt Lake City Seattle/Tacoma Intl

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

4h 11m1 stop Salt Lake City

$583Delta

Fri, Oct 9 - Mon, Oct 12

1:08 pm - 8:18 pmHLN Helena-SFO San Francisco

8h 10m2 stops Salt Lake City Seattle/Tacoma Intl

12:05 pm - 10:24 pmSFO San Francisco-HLN Helena

9h 19m2 stops Los Angeles Los Angeles Salt Lake City

$588Delta

Booking Insights

Price, demand and travel trends for Helena to San Francisco flights

Use KAYAK data on prices, travel dates, airlines and seasonal trends to compare options and book flights from Helena to San Francisco with more confidence.

Prices

Airlines

Layovers

How much is a round-trip flight from Helena to San Francisco?

Round-trip flights from Helena to San Francisco start at $388. Prices are typical for this route right now, with typical round-trip fares ranging from $258 to $533. The lowest price found in the past 5 days was $388 on Alaska Airlines.

Find deals

Low season	June
High season	January
Cheapest flight	$237

Best time to beat the crowds but there is an average 70% increase in price.

Most popular time to fly and prices are also 33% lower on average.

Flight from Helena to San Francisco

When to book flights from Helena to San Francisco

Are your dates flexible? Find out the best times to travel from Helena to San Francisco based on our flight data from the last year. Discover the cheapest month and even day to fly.

Estimated round-trip price

KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

Which airports can I use when flying from Helena to San Francisco?
Flights from Helena to San Francisco usually depart from Helena (HLN) and arrive at San Francisco (SFO).
What cabin classes can I book on flights from Helena to San Francisco?
Only Economy Class is available on flights from Helena to San Francisco.
Which airports do connecting flights from Helena to San Francisco pass through?
One-stop flights from Helena to San Francisco most commonly connect through:

• Salt Lake City (SLC) - 57% of one-stop connections
• Seattle/Tacoma Intl (SEA) - 39% of one-stop connections
• Denver Intl (DEN) - 4% of one-stop connections

Salt Lake City (SLC) handles the largest share of one-stop connections on this route.
Can I save money by using flexible dates for flights from Helena to San Francisco?
Yes. Being flexible with your travel dates can save you up to 70% on the Helena to San Francisco route. Thursday is the cheapest departure day at $278 round-trip on average, while Monday is the most expensive at $908, a difference of $630. KAYAK's flexible dates feature shows options up to 3 days before and after your selected dates, making it easier to compare nearby fares.
What popular places can I visit in San Francisco?
Some of the most popular sights in San Francisco are Fisherman's Wharf, Union Square and Moscone Center. These are among the most viewed places in San Francisco on KAYAK.
How long is a flight from Helena to San Francisco?
There are currently no nonstop flights available from Helena to San Francisco. Flights with 1 layover take between 4h 58m and 6h 24m in total, depending on the connection.
Do I need a passport to fly from Helena to San Francisco?
No, a passport is not required for this domestic route, but you will need a real ID-compliant driver's license, a state ID, or another TSA-accepted form of identification.
Have flight prices from Helena to San Francisco changed much recently?
Yes. Based on fares seen in the past 5 days, round-trip prices on this route showed a wide range, from about $388 to $1,793. That means the highest observed fare was about 5x higher than the lowest one.
How are flight prices from Helena to San Francisco looking right now?
One-way fares from Helena to San Francisco are currently lower than usual. Average one-way flight prices are about $268, which is 70% below the typical average for this route.
How much time can I save by choosing a different layover airport from Helena to San Francisco?
Flying via Salt Lake City (SLC) gives the shortest average 1-stop total travel time at 4h 58m, compared with 5h 59m via Denver Intl (DEN) and 6h 24m via Seattle/Tacoma Intl (SEA).
What is the time difference between Helena and San Francisco?
San Francisco is 1 hour behind Helena (Pacific Time vs Mountain Time). Plan for the time shift when scheduling connections or first-day activities.
What car rental options are available at San Francisco Airport (SFO)?
San Francisco Airport (SFO) hosts 5 major car rental companies, with daily rates starting from around $15 for economy cars. Top options include:
• Thrifty
• Europcar
• Dollar
• Hertz
• Fox
How much should I expect to pay for a Helena to San Francisco flight?
Round-trip flights from Helena to San Francisco range from $258 to $533, with an average of $357 over the past 12 months. Anything below $258 counts as a good deal.

If your dates can be flexible, aim for a Thursday departure instead of Monday. On this route, Thursday flights average $278 - about $630 less than Monday (69% savings) based on the last 12 months.
If you can choose when to travel, plan your Helena to San Francisco trip for January. Fares historically average $238 round-trip in that month - typically $670 less than the most expensive month, which is November (based on the last 12 months).
If you're arriving late at night and need somewhere to stay, check out these hotels close to San Francisco Airport.
- Grand Hyatt At Sfo

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$237 Find Cheap Flights from Helena to San Francisco - Compare and Save

Everything you should know

Cheap Flights from Helena to San Francisco (HLN-SFO)

Recent round-trip flight deals from Helena to San Francisco

Recent one-way flight deals from Helena to San Francisco

Recent last minute flight deals from Helena to San Francisco

Price, demand and travel trends for Helena to San Francisco flights

How much is a round-trip flight from Helena to San Francisco?

What is the cheapest airline to fly from Helena to San Francisco?

What is the most popular layover airport when flying from Helena to San Francisco?

What is the cheapest layover airport when flying from Helena to San Francisco?

When flying from Helena to San Francisco which airport offers the shortest layover?

Key details for Helena to San Francisco flights

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Cheapest flight

When to book flights from Helena to San Francisco

Your Helena to San Francisco flight questions, answered

Your guide to booking Helena to San Francisco flights

More options for your flight from Helena to San Francisco

Complete your trip to San Francisco with a hotel stay or car rental

Information on your arrival and departure airports

Cabin class types available on flights from Helena to San Francisco

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Flights from domestic origins to San Francisco

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Find deals for your return flight