What are the cheapest airlines flying from Helena to San Francisco round-trip?

According to our current data, Delta ($519), Alaska Airlines ($537), and United Airlines ($572) offers the cheapest pricing from Helena to San Francisco.

What are the cheapest airlines to fly from Helena to San Francisco one-way?

The cheapest airline one-way is Hawaiian Airlines, with whom users have recently found tickets for as low as $259. However, be on the lookout for offers from Alaska Airlines and Delta, as they are both options that can get you from Helena to San Francisco for a low price.

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

Travelers seeking maximum savings on their Helena to San Francisco flight should consider departing on Friday mornings when fares are most often at their lowest. Sunday mornings flights should be avoided if possible as fares are typically the most expensive at this time.

What is the cheapest day to fly round-trip from Helena to San Francisco?

Leaving on a Sunday is a viable option for saving on travel. Heavily demanded days of the week can typically drive up the prices you see. Booking your travel for a less competitive day can save up to 107% on the overall cost on flights from Helena to San Francisco.

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

Our data shows that May tends to be the cheapest month to fly to San Francisco from Helena. Users have commonly found prices around $392 for the month, but tickets can be as low as $246. Due to multiple factors, prepare for potentially higher prices in March.

Most accurate provider : When it comes to deals on Helena-San Francisco flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Helena-San Francisco flight deals on Cheapflights vs. eDreams >95% of the time. Price accuracy is based on data collected from Helena-San Francisco flight searches over the past month and is updated monthly.

Most trusted provider : When it comes to deals on Helena-San Francisco flights, Cheapflights users trust eDreams the most. eDreams has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Helena-San Francisco flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Can I find deals for flights from Helena to San Francisco that include hotel bookings?

Yes. In addition to deals on Helena to San Francisco flights, Cheapflights offers vacation packages that include both flights and hotel.

How can I find direct flights from Helena to San Francisco?

After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Helena to San Francisco.

Can I find deals for business class flights from Helena to San Francisco?

Yes. Cheapflights offers flight deals from Helena to San Francisco by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

$259+ Flights from Helena to San Francisco

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1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheap flight deals from Helena to San Francisco

Most accurate provider	eDreams 3 stars
Most trusted provider	eDreams 3 stars
Round-trip from	$519 (Delta)
One-way from	$259 (Hawaiian Airlines)
Popular in	March
Cheapest in	May
Average price	$449

Provider with most accurate pricing for Helena-San Francisco flight deals.

Search Deals

Provider most trusted by Cheapflights users for Helena-San Francisco flights.

Search Deals

From Helena to San Francisco

Search Deals

One-way flight from Helena to San Francisco

Search Deals

Highest demand for flights based on searches. 8% potential increase in price ($35 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 3% potential price decrease ($12 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in April 2025

Search Deals

Find flight deals from Helena to San Francisco

Cheapest flights from Helena to San Francisco
Explore the most affordable flight options available from Helena to San Francisco. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 16, 2025.

Wed 4/301:18 pmHLN - SFO

1 stop6h 03mDelta

Sun 5/45:55 amSFO - HLN

1 stop5h 43mDelta

Deal found 4/14

$519

Wed 4/307:29 pmHLN - SFO

1 stop16h 01mAlaska Airlines

Sun 5/49:57 pmSFO - HLN

2 stops19h 52mAlaska Airlines

Deal found 4/14

$537

Wed 4/306:45 amHLN - SFO

1 stop27h 51mUnited Airlines

Sun 5/46:30 amSFO - HLN

1 stop6h 01mUnited Airlines

Deal found 4/15

$572

Best flights from Helena to San Francisco
Discover carefully curated flight deals from Helena to San Francisco that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated April 16, 2025.

Wed 4/301:18 pmHLN - SFO

1 stop6h 03mDelta

Sun 5/45:55 amSFO - HLN

1 stop5h 43mDelta

Deal found 4/14

$519

Wed 4/307:29 pmHLN - SFO

1 stop16h 01mAlaska Airlines

Sun 5/49:57 pmSFO - HLN

2 stops19h 52mAlaska Airlines

Deal found 4/14

$537

Wed 4/306:45 amHLN - SFO

1 stop27h 51mUnited Airlines

Sun 5/46:30 amSFO - HLN

1 stop6h 01mUnited Airlines

Deal found 4/15

$572

Last-minute flights from Helena to San Francisco
Discover last-minute flight deals from Helena to San Francisco. Data last updated April 16, 2025 and is based on user searches.

Wed 4/301:18 pmHLN - SFO

1 stop6h 03mDelta

Sun 5/45:55 amSFO - HLN

1 stop5h 43mDelta

Deal found 4/14

$519

Wed 4/307:29 pmHLN - SFO

1 stop16h 01mAlaska Airlines

Sun 5/49:57 pmSFO - HLN

2 stops19h 52mAlaska Airlines

Deal found 4/14

$537

Wed 4/306:45 amHLN - SFO

1 stop27h 51mUnited Airlines

Sun 5/46:30 amSFO - HLN

1 stop6h 01mUnited Airlines

Deal found 4/15

$572

One-way flights from Helena to San Francisco
Search for one-way flight options from Helena to San Francisco. Find affordable one-way fares based on user searches. Data last updated April 16, 2025.

Fri 5/27:29 pmHLN - SFO

1 stop5h 15mHawaiian Airlines

Deal found 4/15

$259

Fri 5/27:29 pmHLN - SFO

2 stops20h 01mAlaska Airlines

Deal found 4/15

$290

Sun 5/115:45 amHLN - SFO

1 stop4h 11mDelta

Deal found 4/16

$450

Fri 5/26:25 amHLN - SFO

3 stops14h 38mUnited Airlines

Deal found 4/15

$780

Cheapflights Fare Finder

Use the filters below to find and compare flights from Helena to San Francisco that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

HelenaSan Francisco

HLN - SFO

HLNSFO

Helena

Wed 4/30

1:18 pm-6:21 pm

1 stop6h 03m

San Francisco

Sun 5/4

5:55 am-12:38 pm

1 stop5h 43m

$519

HelenaSan Francisco

HLN - SFO

HLNSFO

Helena

Wed 4/30

7:29 pm-10:30 am

1 stop16h 01m

San Francisco

Sun 5/4

9:57 pm-6:49 pm

2 stops19h 52m

$537

HelenaSan Francisco

HLN - SFO

HLNSFO

Helena

Wed 4/30

6:45 am-9:36 am

1 stop27h 51m

San Francisco

Sun 5/4

6:30 am-1:31 pm

1 stop6h 01m

$572

HelenaSan Francisco

HLN - SFO

HLNSFO

Helena

Fri 5/2

7:29 pm-11:44 pm

1 stop5h 15m

$259

HelenaSan Francisco

HLN - SFO

HLNSFO

Helena

Fri 5/2

7:29 pm-2:30 pm

2 stops20h 01m

$290

HelenaSan Francisco

HLN - SFO

HLNSFO

Helena

Sun 5/11

5:45 am-8:56 am

1 stop4h 11m

$450

HelenaSan Francisco

HLN - SFO

HLNSFO

Helena

Fri 5/2

6:25 am-8:03 pm

3 stops14h 38m

$780

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/15

Compare providers for flights from Helena to San Francisco

Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Helena to San Francisco in April.

Provider	Price Accuracy	Trust Score*
Expedia	Price Accuracy1 star	Trust Score*3 stars
eDreams	Price Accuracy3 stars	Trust Score*3 stars
FlightHub	Price Accuracy3 stars	Trust Score*2 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

Most accurate provider: When it comes to deals on Helena-San Francisco flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Helena-San Francisco flight deals on Cheapflights vs. eDreams >95% of the time. Price accuracy is based on data collected from Helena-San Francisco flight searches over the past month and is updated monthly.
Most trusted provider: When it comes to deals on Helena-San Francisco flights, Cheapflights users trust eDreams the most. eDreams has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Helena-San Francisco flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Helena to San Francisco

Have a flexible travel schedule? Discover the best time to fly to San Francisco from Helena with our price prediction graph.

Estimated round-trip price

Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Helena to San Francisco

What is the cheapest month to book a flight from Helena to San Francisco?

Currently, January is the cheapest month in which you can book a flight from Helena to San Francisco (average of $276). Flying from Helena to San Francisco in June is currently the most expensive (average of $393). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from HLN to SFO?

It’s typically best to fly out from Helena to San Francisco at noon. Doing so could potentially save you 16% on the flight price compared to flying in the morning, which is usually more expensive.

Rainfall in San Francisco by month

In terms of precipitation, rainfall in San Francisco ranges from 0.0 - 4.4 inches per month. January is typically the wettest month, when rainfall can reach 4.4 in. July is typically the driest time to visit San Francisco when rainfall is around 0.0 in.

Temperature in San Francisco by month

If weather is an important factor for your trip to San Francisco, use this chart to help with planning. For those seeking warmer temperatures, September is the ideal time of year to visit, when temperatures reach an average of 62.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 51.8 F).

Reviews of airlines servicing San Francisco

Alaska Airlines

8.0

Very good

9,876 reviews

Reviews

1 / 20

4.0

Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >

Alaska Airlines

8.0

Very good

9,876 reviews

Alaska Airlines

8.0

Very good

9,876 reviews

Reviews

1 / 20

4.0

Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >

Delta

8.0

Very good

7,916 reviews

Alaska Airlines

8.0

Very good

9,876 reviews

Reviews

1 / 20

4.0

Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >

Hawaiian Airlines

7.9

Good

2,380 reviews

Alaska Airlines

8.0

Very good

9,876 reviews

Reviews

1 / 20

4.0

Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >

United Airlines

7.4

Good

8,665 reviews

Alaska Airlines

8.0

Very good

9,876 reviews

Reviews

1 / 20

4.0

Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >

Related info for your journey

What are the cheapest airlines flying from Helena to San Francisco round-trip?
According to our current data, Delta ($519), Alaska Airlines ($537), and United Airlines ($572) offers the cheapest pricing from Helena to San Francisco.
What are the cheapest airlines to fly from Helena to San Francisco one-way?
The cheapest airline one-way is Hawaiian Airlines, with whom users have recently found tickets for as low as $259. However, be on the lookout for offers from Alaska Airlines and Delta, as they are both options that can get you from Helena to San Francisco for a low price.
Can I find deals for flights from Helena to San Francisco that include hotel bookings?
Yes. In addition to deals on Helena to San Francisco flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Helena to San Francisco?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Helena to San Francisco.
Can I find deals for business class flights from Helena to San Francisco?
Yes. Cheapflights offers flight deals from Helena to San Francisco by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.
What is the cheapest month to book a flight from Helena to San Francisco?
Currently, January is the cheapest month in which you can book a flight from Helena to San Francisco (average of $276). Flying from Helena to San Francisco in June is currently the most expensive (average of $393). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Roseville

Mountain View

Santa Cruz

Turlock

South San Francisco

Fairfield

Manteca

Sausalito

Richmond

Watsonville

Hollister

Milpitas

Antioch

Vallejo

Newark

Hayward

Alameda

Sunnyvale

Livermore

Campbell

Browse thousands of different options on Cheapflights for your next trip

Top airline flying from Helena to San Francisco

Airline	Cheapest	Average	Flexibility	On-time
Delta	Cheapest$246	Average$349	FlexibilityNo cancel fee	On-timeN/A

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$259+ Cheap flights from Helena to San Francisco (HLN - SFO)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 5/2. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Helena to San Francisco with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Cheap flight deals from Helena to San Francisco

Most accurate provider

Most trusted provider

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Find flight deals from Helena to San Francisco

Cheapest flights from Helena to San FranciscoExplore the most affordable flight options available from Helena to San Francisco. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 16, 2025.

Explore the most affordable flight options available from Helena to San Francisco. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 16, 2025.

Cheapflights Fare Finder

Use the filters below to find and compare flights from Helena to San Francisco that are best for you.

Compare providers for flights from Helena to San Francisco

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.

Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Helena to San Francisco in April.

Best time to book a flight from Helena to San Francisco

Have a flexible travel schedule? Discover the best time to fly to San Francisco from Helena with our price prediction graph.

Cheapflights Insights

Everything you need to know about your flight from Helena to San Francisco

What is the cheapest month to book a flight from Helena to San Francisco?

What is the cheapest time of day to fly from HLN to SFO?

Find hourly flight availability from Helena to San Francisco. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated April 16, 2025.

Rainfall in San Francisco by month

Plan your trip to San Francisco by taking into account the average rainfall totals by month.

Temperature in San Francisco by month

Plan your trip to San Francisco by taking into account the average temperature totals by month.

Reviews of airlines servicing San Francisco

Related info for your journey

Find useful and relevant information for your journey from Helena to San Francisco. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

What are the cheapest airlines flying from Helena to San Francisco round-trip?

What are the cheapest airlines to fly from Helena to San Francisco one-way?

Can I find deals for flights from Helena to San Francisco that include hotel bookings?

How can I find direct flights from Helena to San Francisco?

Can I find deals for business class flights from Helena to San Francisco?

What is the cheapest month to book a flight from Helena to San Francisco?

Traveling to a place near Helena?

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Alternative routes for Helena to San Francisco

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Top airline flying from Helena to San Francisco

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Cheapest flights from Helena to San Francisco
Explore the most affordable flight options available from Helena to San Francisco. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 16, 2025.