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Cheap flights from Helena to San Francisco from $211

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Helena to San Francisco departing on 9/12. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Helena to San Francisco

Cheap round-trip flights

Enter your travel dates to find the best prices.
Delta Logo
5:45 am - 8:53 am
HLN
-
SFO
4h 08m
1 stop
Delta Logo
5:25 pm - 10:31 pm
SFO
-
HLN
4h 06m
1 stop
$369Delta
Tue, Jun 2 - Tue, Jun 9
Delta Logo
1:03 pm - 9:19 pm
HLN
-
SFO
9h 16m
2 stops
Delta Logo
5:25 pm - 10:31 pm
SFO
-
HLN
4h 06m
1 stop
$374Delta
Tue, Jun 2 - Tue, Jun 9
Alaska Airlines Logo
4:43 pm - 11:00 am
HLN
-
SFO
19h 17m
1 stop
Alaska Airlines Logo
6:00 am - 4:06 pm
SFO
-
HLN
9h 06m
1 stop
$376Alaska Airlines
Tue, Jun 2 - Tue, Jun 9
Delta Logo
5:45 am - 1:36 pm
HLN
-
SFO
8h 51m
2 stops
Delta Logo
11:45 am - 10:31 pm
SFO
-
HLN
9h 46m
2 stops
$380Delta
Tue, Jun 2 - Tue, Jun 9
Delta Logo
5:45 am - 8:53 am
HLN
-
SFO
4h 08m
1 stop
Delta Logo
4:55 pm - 10:33 pm
SFO
-
HLN
4h 38m
1 stop
$389Delta
Fri, May 29 - Fri, Jun 5
Delta Logo
5:45 am - 10:53 am
HLN
-
SFO
6h 08m
2 stops
Delta Logo
4:55 pm - 10:33 pm
SFO
-
HLN
4h 38m
1 stop
$394Delta
Fri, May 29 - Fri, Jun 5
Alaska Airlines Logo
4:43 pm - 4:04 pm
HLN
-
SFO
24h 21m
1 stop
Alaska Airlines Logo
8:23 am - 4:06 pm
SFO
-
HLN
6h 43m
1 stop
$396Alaska Airlines
Sat, May 23 - Wed, May 27
Delta Logo
5:45 am - 8:53 am
HLN
-
SFO
4h 08m
1 stop
Delta Logo
4:55 pm - 10:33 pm
SFO
-
HLN
4h 38m
1 stop
$399Delta
Sat, May 30 - Fri, Jun 5
Delta Logo
1:03 pm - 9:19 pm
HLN
-
SFO
9h 16m
2 stops
Delta Logo
4:55 pm - 10:33 pm
SFO
-
HLN
4h 38m
1 stop
$404Delta
Sat, May 30 - Fri, Jun 5
Alaska Airlines Logo
4:43 pm - 3:03 pm
HLN
-
SFO
23h 20m
2 stops
Alaska Airlines Logo
10:14 am - 4:06 pm
SFO
-
HLN
4h 52m
1 stop
$412Alaska Airlines
Sat, May 23 - Wed, May 27

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Delta flights from Helena to San Francisco

Our best Delta deals on Helena to San Francisco flight tickets
Delta
Jun 2
HLN5:45 amHelena
4h 08m
1 stop
SFO8:53 amSan Francisco
Jun 9
SFO5:25 pmSan Francisco
4h 06m
1 stop
HLN10:31 pmHelena
$369
Delta
Jun 2
HLN1:03 pmHelena
9h 16m
2 stops
SFO9:19 pmSan Francisco
Jun 9
SFO5:25 pmSan Francisco
4h 06m
1 stop
HLN10:31 pmHelena
$374
Delta
Jun 2
HLN5:45 amHelena
8h 51m
2 stops
SFO1:36 pmSan Francisco
Jun 9
SFO11:45 amSan Francisco
9h 46m
2 stops
HLN10:31 pmHelena
$380

Alaska Airlines flights from Helena to San Francisco

Our best Alaska Airlines deals on Helena to San Francisco flight tickets
Alaska Airlines
Jun 2
HLN4:43 pmHelena
19h 17m
1 stop
SFO11:00 amSan Francisco
Jun 9
SFO6:00 amSan Francisco
9h 06m
1 stop
HLN4:06 pmHelena
$376
Alaska Airlines
May 23
HLN4:43 pmHelena
24h 21m
1 stop
SFO4:04 pmSan Francisco
May 27
SFO8:23 amSan Francisco
6h 43m
1 stop
HLN4:06 pmHelena
$396
Alaska Airlines
May 23
HLN4:43 pmHelena
23h 20m
2 stops
SFO3:03 pmSan Francisco
May 27
SFO10:14 amSan Francisco
4h 52m
1 stop
HLN4:06 pmHelena
$412

momondo Fare Finder

 
Customize your flight search to find flights from Helena to San Francisco 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, momondo users made 832,500 searches. Data last updated May 2, 2026.
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

Cheapest round-trip
Quickest round-trip

HelenaSan Francisco

HLN - SFO

HLNSFO

Helena

Tue 6/2

5:45 am-8:53 am

1 stop4h 08m

San Francisco

Tue 6/9

5:25 pm-10:31 pm

1 stop4h 06m

$369

HelenaSan Francisco

HLN - SFO

HLNSFO

Helena

Tue 6/2

1:03 pm-9:19 pm

2 stops9h 16m

San Francisco

Tue 6/9

5:25 pm-10:31 pm

1 stop4h 06m

$374

HelenaSan Francisco

HLN - SFO

HLNSFO

Helena

Tue 6/2

4:43 pm-11:00 am

1 stop19h 17m

San Francisco

Tue 6/9

6:00 am-4:06 pm

1 stop9h 06m

$376

HelenaSan Francisco

HLN - SFO

HLNSFO

Helena

Tue 6/2

5:45 am-1:36 pm

2 stops8h 51m

San Francisco

Tue 6/9

11:45 am-10:31 pm

2 stops9h 46m

$380

HelenaSan Francisco

HLN - SFO

HLNSFO

Helena

Fri 5/29

5:45 am-8:53 am

1 stop4h 08m

San Francisco

Fri 6/5

4:55 pm-10:33 pm

1 stop4h 38m

$389

HelenaSan Francisco

HLN - SFO

HLNSFO

Helena

Fri 5/29

5:45 am-10:53 am

2 stops6h 08m

San Francisco

Fri 6/5

4:55 pm-10:33 pm

1 stop4h 38m

$394

HelenaSan Francisco

HLN - SFO

HLNSFO

Helena

Sat 5/23

4:43 pm-4:04 pm

1 stop24h 21m

San Francisco

Wed 5/27

8:23 am-4:06 pm

1 stop6h 43m

$396

HelenaSan Francisco

HLN - SFO

HLNSFO

Helena

Sat 5/30

5:45 am-8:53 am

1 stop4h 08m

San Francisco

Fri 6/5

4:55 pm-10:33 pm

1 stop4h 38m

$399

HelenaSan Francisco

HLN - SFO

HLNSFO

Helena

Sat 5/30

1:03 pm-9:19 pm

2 stops9h 16m

San Francisco

Fri 6/5

4:55 pm-10:33 pm

1 stop4h 38m

$404

HelenaSan Francisco

HLN - SFO

HLNSFO

Helena

Sat 5/23

4:43 pm-3:03 pm

2 stops23h 20m

San Francisco

Wed 5/27

10:14 am-4:06 pm

1 stop4h 52m

$412

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to San Francisco from

How to get the cheapest flight ticket from Helena to San Francisco

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

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

Alaska Airlines and Delta are the most popular carriers operating from Helena to San Francisco

What airlines fly to San Francisco?

United Airlines, Alaska Airlines and Delta are the top three most popular airlines that fly to San Francisco from Helena according to our data. United Airlines is the first choice among our users, with 37% of people opting to fly with this airline when traveling to San Francisco. Keep in mind that there are 4 different airlines that fly to San Francisco on a routine basis, so you have a few additional options to choose from.

When to book flights from Helena to San Francisco

Are you open to changing your travel dates? Check out the ideal times to fly from Helena to San Francisco according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Helena to San Francisco (HLN to SFO) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Helena to San Francisco

Fastest flight time

4h 08m

Direct flights

None
The fastest flight from Helena to San Francisco takes 4h 08m
There are no direct flights from Helena to San Francisco. There are no popular flight routes from Helena to San Francisco.
Search flight deals

Frequently asked questions about flying from Helena to San Francisco

  • How far is Helena to San Francisco by plane?

    The distance between Helena and San Francisco is about 805.7 mi. 4h 08m is a normal flight duration for this route.

  • When did momondo last update prices for flights from Helena Airport to San Francisco Airport?

    Prices for flights from Helena Airport to San Francisco Airport are updated daily.

  • How many operators does momondo search for flights from Helena Airport to San Francisco Airport?

  • How old do you have to be to fly from Helena Airport to San Francisco Airport?

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Helena Airport to San Francisco Airport.

  • What documentation or ID do you need to fly to San Francisco Airport?

    The travel and health documents you'll need for your trip to San Francisco Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at San Francisco Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

  • What is the most popular airline from Helena to San Francisco?

Best airlines flying from Helena to San Francisco

Compare and see reviews for airlines that fly from Helena to San Francisco with momondo
Airline
Rating
Free Cancellation
Price
DeltaPriceFrom $238Free CancellationRating
7.9
8,460 reviews
Search Delta flights

Traveling to a place near San Francisco?

Book flights to San Francisco if you plan to visit one of these locations
Santa Cruz
Carmel-by-the-Sea
Modesto
Sonoma
Bodega Bay
Walnut Creek
Roseville
Hayward
Berkeley
Santa Clara
Vallejo
Fremont
Big Sur
Calistoga
Daly City
South San Francisco
Pacific Grove
Sunnyvale
Salinas
Milpitas

Why use momondo?

Why should I use momondo to find a flight deal from Helena to San Francisco?

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to San Francisco from Helena.

Can I find flights from Helena to San Francisco with flexible booking policies on momondo?

All flight searches from Helena to San Francisco on momondo can be filtered to show those which offer flexible booking policies.

How can momondo help me find flights from Helena to San Francisco?

momondo provides multiple filters to help you find the best flight to San Francisco from Helena. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

I’m not ready to book a flight from Helena to San Francisco right now. Can momondo alert me if prices change?

Price alerts on flights to San Francisco from Helena are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.

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