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San Francisco Bay Area

$260+ 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 9/12. Fares are subject to change and may not be available on all flights or dates of travel.
HLN — SFO
Sep 2 — Sep 91
Tue 9/2
Tue 9/9
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 August 28, 2025.

Round-trip from

$264
(Alaska Airlines)

One-way from

$260
(United Airlines)

Popular in

July

Cheapest in

May

Average price

$554
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. 27% potential increase in price ($156 potential increase over avg. RT price).
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Cheapest flight prices on average. 4% potential price decrease ($18 potential savings vs. average RT price).
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Average for round-trip flights in August 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 August 28, 2025.

This Alaska Airlines deal was found by Cheapflights users on 8/27. 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 10/246:18 pmHLN - SFO
1 stop5h 00mAlaska Airlines
Tue 10/289:00 amSFO - HLN
1 stop7h 36mAlaska Airlines
Deal found 8/27$264
This Alaska Airlines deal was found by Cheapflights users on 8/27. 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 10/246:18 pmHLN - OAK
1 stop6h 45mAlaska Airlines
Tue 10/282:49 pmOAK - HLN
1 stop25h 47mAlaska Airlines
Deal found 8/27$295
This Delta deal was found by Cheapflights users on 8/27. 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 10/241:00 pmHLN - SJC
1 stop4h 04mDelta
Tue 10/285:55 amSJC - HLN
1 stop5h 25mDelta
Deal found 8/27$296
This Delta deal was found by Cheapflights users on 8/28. 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.
Sat 9/275:45 amHLN - SFO
1 stop4h 01mDelta
Wed 10/15:35 amSFO - HLN
1 stop5h 45mDelta
Deal found 8/28$337
This Alaska Airlines deal was found by Cheapflights users on 8/26. 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 10/176:18 pmHLN - OAK
1 stop6h 45mAlaska Airlines
Sun 10/196:40 amOAK - HLN
1 stop10h 01mAlaska Airlines
Deal found 8/26$344
This Alaska Airlines deal was found by Cheapflights users on 8/26. 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 11/217:32 pmHLN - OAK
1 stop5h 27mAlaska Airlines
Sun 11/236:15 amOAK - HLN
1 stop11h 37mAlaska Airlines
Deal found 8/26$413
This Alaska Airlines deal was found by Cheapflights users on 8/27. 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 10/96:18 pmHLN - OAK
1 stop6h 45mAlaska Airlines
Mon 10/136:40 amOAK - HLN
1 stop10h 01mAlaska Airlines
Deal found 8/27$443
This Alaska Airlines deal was found by Cheapflights users on 8/28. 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.
Sat 9/274:02 pmHLN - SFO
1 stop6h 18mAlaska Airlines
Wed 10/11:50 pmSFO - HLN
2 stops24h 31mAlaska Airlines
Deal found 8/28$449
This Delta deal was found by Cheapflights users on 8/26. 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 9/115:45 amHLN - SJC
1 stop4h 17mDelta
Mon 9/155:00 pmSJC - HLN
1 stop4h 14mDelta
Deal found 8/26$519
This Delta deal was found by Cheapflights users on 8/26. 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 9/111:00 pmHLN - SFO
1 stop4h 00mDelta
Mon 9/155:35 amSFO - HLN
1 stop5h 45mDelta
Deal found 8/26$519
This United Airlines deal was found by Cheapflights users on 8/26. 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.
Thu 9/115:20 pmHLN - SFO
1 stop6h 50mUnited Airlines
Mon 9/1510:37 pmSFO - HLN
2 stops13h 53mUnited Airlines
Deal found 8/26$542
This Alaska Airlines deal was found by Cheapflights users on 8/26. 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 9/114:02 pmHLN - SFO
2 stops22h 30mAlaska Airlines
Mon 9/156:53 pmSFO - HLN
2 stops19h 28mAlaska Airlines
Deal found 8/26$625

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 August 28, 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

Fri 10/24

6:18 pm-10:18 pm

1 stop5h 00m

San Francisco

Tue 10/28

9:00 am-5:36 pm

1 stop7h 36m

$264

HelenaOakland

HLN - OAK

HLNOAK

Helena

Fri 10/24

6:18 pm-12:03 am

1 stop6h 45m

Oakland

Tue 10/28

2:49 pm-5:36 pm

1 stop25h 47m

$295

HelenaSan Jose

HLN - SJC

HLNSJC

Helena

Fri 10/24

1:00 pm-4:04 pm

1 stop4h 04m

San Jose

Tue 10/28

5:55 am-12:20 pm

1 stop5h 25m

$296

HelenaSan Francisco

HLN - SFO

HLNSFO

Helena

Sat 9/27

5:45 am-8:46 am

1 stop4h 01m

San Francisco

Wed 10/1

5:35 am-12:20 pm

1 stop5h 45m

$337

HelenaOakland

HLN - OAK

HLNOAK

Helena

Fri 10/17

6:18 pm-12:03 am

1 stop6h 45m

Oakland

Sun 10/19

6:40 am-5:41 pm

1 stop10h 01m

$344

HelenaOakland

HLN - OAK

HLNOAK

Helena

Fri 11/21

7:32 pm-11:59 pm

1 stop5h 27m

Oakland

Sun 11/23

6:15 am-6:52 pm

1 stop11h 37m

$413

HelenaOakland

HLN - OAK

HLNOAK

Helena

Thu 10/9

6:18 pm-12:03 am

1 stop6h 45m

Oakland

Mon 10/13

6:40 am-5:41 pm

1 stop10h 01m

$443

HelenaSan Francisco

HLN - SFO

HLNSFO

Helena

Sat 9/27

4:02 pm-9:20 pm

1 stop6h 18m

San Francisco

Wed 10/1

1:50 pm-3:21 pm

2 stops24h 31m

$449

HelenaSan Francisco

HLN - SFO

HLNSFO

Helena

Thu 9/11

1:00 pm-4:00 pm

1 stop4h 00m

San Francisco

Mon 9/15

5:35 am-12:20 pm

1 stop5h 45m

$519

HelenaSan Jose

HLN - SJC

HLNSJC

Helena

Thu 9/11

5:45 am-9:02 am

1 stop4h 17m

San Jose

Mon 9/15

5:00 pm-10:14 pm

1 stop4h 14m

$519

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/28

Showing 1-10 of 21 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.

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 August 28, 2025.
See what other customers who have flown with Delta 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.
Delta
8.0
Very good
7,977 reviews

Boarding

8.2

Comfort

7.9

Crew

8.5

Food

7.3

Entertainment

7.9

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
Delta
8.0
Very good
7,977 reviews
Delta
8.0
Very good
7,977 reviews

Boarding

8.2

Comfort

7.9

Crew

8.5

Food

7.3

Entertainment

7.9

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

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.

  • How long is the flight from Helena to San Francisco Bay Area?

    A quick flight from Helena to San Francisco Bay Area can take about 4h 04m. Alaska Airlines provides one of the quickest options available for as low as $296. The distance between Helena and San Francisco Bay Area is about 816 mi. Both multi-stop and nonstop flights can be found to your destination and back.

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

    Most travelers choose Helena - San Jose, Helena - Oakland 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 August 28, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$246Average$384FlexibilityNo cancel feeOn-timeN/A

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