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San Francisco Bay Area

$143+ Cheap flights from Helena (HLN) to San Francisco Bay Area

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 8/15. Fares are subject to change and may not be available on all flights or dates of travel.
HLN — SFO
Jul 12 — Jul 191
Sat 7/12
Sat 7/19
1 adult, Economy
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Cheap flight deals from Helena to San Francisco Bay Area

Keep the following information in mind while searching for Helena to San Francisco Bay Area flight deals. Data was last updated July 7, 2025.

Round-trip from

$285
(Delta)

One-way from

$143
(Delta)

Popular in

March

Cheapest in

May

Average price

$453
From Helena to San Francisco Bay Area
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One-way flight from Helena to San Francisco Bay Area
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Highest demand for flights based on searches. 6% potential increase in price ($28 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($12 potential savings vs. average RT price).
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Average for round-trip flights in July 2025
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Find flight deals from Helena to San Francisco Bay Area

Cheapest flights from Helena to San Francisco Bay Area
Explore the most affordable flight options available from Helena to San Francisco Bay Area. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 7, 2025.

This Delta deal was found by Cheapflights users on 7/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/211:00 pmHLN - SFO
1 stop4h 05mDelta
Sun 8/245:35 amSFO - HLN
1 stop5h 45mDelta
Deal found 7/6$285
This Alaska Airlines deal was found by Cheapflights users on 7/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/214:02 pmHLN - SFO
1 stop5h 18mAlaska Airlines
Sun 8/248:00 amSFO - HLN
2 stops30h 21mAlaska Airlines
Deal found 7/6$349
This United Airlines deal was found by Cheapflights users on 7/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/252:34 pmHLN - SJC
1 stop7h 28mUnited Airlines
Tue 7/292:31 pmSJC - HLN
1 stop5h 44mUnited Airlines
Deal found 7/6$428
This United Airlines deal was found by Cheapflights users on 7/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/215:39 pmHLN - SFO
1 stop6h 31mUnited Airlines
Fri 7/2512:55 pmSFO - HLN
1 stop7h 20mUnited Airlines
Deal found 7/6$537
This Alaska Airlines deal was found by Cheapflights users on 7/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/254:09 pmHLN - SJC
1 stop5h 42mAlaska Airlines
Tue 7/297:57 pmSJC - HLN
2 stops18h 34mAlaska Airlines
Deal found 7/6$561
This Alaska Airlines deal was found by Cheapflights users on 7/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/224:09 pmHLN - OAK
1 stop6h 57mAlaska Airlines
Sat 7/267:00 amOAK - HLN
1 stop7h 31mAlaska Airlines
Deal found 7/7$587
This Delta deal was found by Cheapflights users on 7/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/181:00 pmHLN - SJC
1 stop4h 03mDelta
Tue 7/225:45 amSJC - HLN
1 stop5h 35mDelta
Deal found 7/6$655

Cheapflights Fare Finder

Customize your flight search to find flights from Helena to San Francisco Bay Area that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated July 7, 2025.
Use the filters below to find and compare flights from Helena to San Francisco Bay Area that are best for you.

Fly from

Helena

Fly to

San Francisco Bay Area

Route

Depart

Return

Price

HelenaSan Francisco

HLN - SFO

HLNSFO

Helena

Thu 8/21

1:00 pm-4:05 pm

1 stop4h 05m

San Francisco

Sun 8/24

5:35 am-12:20 pm

1 stop5h 45m

$285

HelenaSan Francisco

HLN - SFO

HLNSFO

Helena

Thu 8/21

4:02 pm-8:20 pm

1 stop5h 18m

San Francisco

Sun 8/24

8:00 am-3:21 pm

2 stops30h 21m

$349

HelenaSan Jose

HLN - SJC

HLNSJC

Helena

Fri 7/25

2:34 pm-9:02 pm

1 stop7h 28m

San Jose

Tue 7/29

2:31 pm-9:15 pm

1 stop5h 44m

$428

HelenaSan Francisco

HLN - SFO

HLNSFO

Helena

Mon 7/21

5:39 pm-11:10 pm

1 stop6h 31m

San Francisco

Fri 7/25

12:55 pm-9:15 pm

1 stop7h 20m

$537

HelenaSan Jose

HLN - SJC

HLNSJC

Helena

Fri 7/25

4:09 pm-8:51 pm

1 stop5h 42m

San Jose

Tue 7/29

7:57 pm-3:31 pm

2 stops18h 34m

$561

HelenaOakland

HLN - OAK

HLNOAK

Helena

Tue 7/22

4:09 pm-10:06 pm

1 stop6h 57m

Oakland

Sat 7/26

7:00 am-3:31 pm

1 stop7h 31m

$587

HelenaSan Jose

HLN - SJC

HLNSJC

Helena

Fri 7/18

1:00 pm-4:03 pm

1 stop4h 03m

San Jose

Tue 7/22

5:45 am-12:20 pm

1 stop5h 35m

$655

HelenaSan Francisco

HLN - SFO

HLNSFO

Helena

Fri 8/15

5:50 am-9:04 am

1 stop4h 14m

$143

HelenaSan Francisco

HLN - SFO

HLNSFO

Helena

Fri 8/15

4:08 pm-6:53 pm

2 stops27h 45m

$202

HelenaSan Jose

HLN - SJC

HLNSJC

Helena

Mon 7/28

4:09 pm-7:00 pm

1 stop27h 51m

$278

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/7

Showing 1-10 of 13 results
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Best time to book a flight from Helena to San Francisco Bay Area

Have a flexible travel schedule? Discover the best time to fly to San Francisco Bay Area 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 Bay Area

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

Currently, January is the cheapest month in which you can book a flight from Helena to San Francisco Bay Area (average of $276). Flying from Helena to San Francisco Bay Area in June is currently the most expensive (average of $358). 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 XIH?

Find hourly flight availability from Helena to San Francisco Bay Area. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated July 7, 2025.

When flying from Helena to San Francisco Bay Area, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Reviews of airlines servicing San Francisco Bay Area

Get insights into the airlines that provide service to San Francisco Bay Area. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to San Francisco Bay Area. Reviews last updated July 7, 2025.
See what other customers who have flown with Alaska Airlines, Delta, and United Airlines from Helena to San Francisco Bay Area have to say. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Comfort

7.8

Entertainment

7.1

Boarding

8.1

Overall

8.0

Crew

8.5

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Alaska Airlines
8.0
Very good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Comfort

7.8

Entertainment

7.1

Boarding

8.1

Overall

8.0

Crew

8.5

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Delta
8.0
Very good
7,962 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Comfort

7.8

Entertainment

7.1

Boarding

8.1

Overall

8.0

Crew

8.5

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
United Airlines
7.4
Good
8,844 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Comfort

7.8

Entertainment

7.1

Boarding

8.1

Overall

8.0

Crew

8.5

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.

Related info for your journey

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

  • What airport do you fly from for flights from Helena to San Francisco Bay Area?

    Helena (HLN) is the airport you will fly out of if you book a flight from Helena to San Francisco Bay Area. It is only a 2.7 mi journey to Helena (HLN) from Helena’s city center.

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

    The cheapest airlines for a one-way flight from Helena to San Francisco Bay Area are Delta ($143), Alaska Airlines ($202), and United Airlines ($290).

  • What are the most popular routes from Helena to San Francisco Bay Area?

    Most travelers choose Helena - Oakland, Helena - San Jose or Helena - San Francisco when deciding on the best route from Helena to San Francisco Bay Area.

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

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

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

    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 Bay Area.

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

    Yes. Cheapflights offers flight deals from Helena to San Francisco Bay Area 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 Bay Area?

    Currently, January is the cheapest month in which you can book a flight from Helena to San Francisco Bay Area (average of $276). Flying from Helena to San Francisco Bay Area in June is currently the most expensive (average of $358). 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

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Top airline flying from Helena to San Francisco Bay Area

Discover the top airline that operate flights from Helena to San Francisco Bay Area. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated July 7, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$246Average$384FlexibilityNo cancel feeOn-timeN/A

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