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Cheap flights from Helena to San Francisco from $119

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 1/13. 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

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Find the cheapest flights from Helena to San Francisco

Cheap round-trip flights

Enter your travel dates to find the best prices.
Alaska Airlines Logo
6:48 pm - 11:03 pm
HLN
-
SFO
5h 15m1 stop
Alaska Airlines Logo
7:00 am - 6:11 pm
SFO
-
HLN
10h 11m1 stop
$238Alaska Airlines
jue., ene. 29 - dom., feb. 1
Alaska Airlines Logo
6:48 pm - 11:03 pm
HLN
-
SFO
5h 15m1 stop
Alaska Airlines Logo
12:00 pm - 6:11 pm
SFO
-
HLN
5h 11m1 stop
$278Alaska Airlines
vie., ene. 9 - mar., ene. 13
Alaska Airlines Logo
4:36 pm - 8:08 am
HLN
-
SFO
16h 32m2 stops
Alaska Airlines Logo
8:42 am - 3:59 pm
SFO
-
HLN
6h 17m1 stop
$301Alaska Airlines
sáb., mar. 7 - jue., mar. 12
Alaska Airlines Logo
6:48 pm - 12:23 pm
HLN
-
SFO
18h 35m2 stops
Alaska Airlines Logo
12:00 pm - 6:11 pm
SFO
-
HLN
5h 11m1 stop
$306Alaska Airlines
vie., ene. 9 - mar., ene. 13
Alaska Airlines Logo
6:48 pm - 12:23 pm
HLN
-
SFO
18h 35m2 stops
Alaska Airlines Logo
12:00 pm - 6:11 pm
SFO
-
HLN
5h 11m1 stop
$311Alaska Airlines
vie., ene. 9 - mar., ene. 13
Alaska Airlines Logo
6:48 pm - 12:23 pm
HLN
-
SFO
18h 35m2 stops
Alaska Airlines Logo
6:40 pm - 6:11 pm
SFO
-
HLN
22h 31m2 stops
$343Alaska Airlines
vie., ene. 9 - mar., ene. 13
Alaska Airlines Logo
6:48 pm - 12:23 pm
HLN
-
SFO
18h 35m2 stops
Alaska Airlines Logo
6:56 pm - 6:11 pm
SFO
-
HLN
22h 15m2 stops
$353Alaska Airlines
vie., ene. 9 - mar., ene. 13
Alaska Airlines Logo
6:48 pm - 12:23 pm
HLN
-
SFO
18h 35m2 stops
Alaska Airlines Logo
5:00 pm - 6:11 pm
SFO
-
HLN
24h 11m2 stops
$359Alaska Airlines
vie., ene. 9 - mar., ene. 13
Alaska Airlines Logo
4:10 pm - 10:10 pm
HLN
-
SFO
7h 00m1 stop
Alaska Airlines Logo
7:00 am - 3:38 pm
SFO
-
HLN
7h 38m1 stop
$456Alaska Airlines
sáb., mar. 28 - dom., abr. 12
Alaska Airlines Logo
4:10 pm - 11:06 pm
HLN
-
SFO
7h 56m2 stops
Alaska Airlines Logo
7:00 am - 3:38 pm
SFO
-
HLN
7h 38m1 stop
$521Alaska Airlines
sáb., mar. 28 - dom., abr. 12

Alaska Airlines flights from Helena to San Francisco

Our best Alaska Airlines deals on Helena to San Francisco flight tickets
Alaska Airlines
Jan 29
HLN6:48 pmHelena
5h 15m
1 stop
SFO11:03 pmSan Francisco
Feb 1
SFO7:00 amSan Francisco
10h 11m
1 stop
HLN6:11 pmHelena
$238
Find similar
Alaska Airlines
Jan 9
HLN6:48 pmHelena
5h 15m
1 stop
SFO11:03 pmSan Francisco
Jan 13
SFO12:00 pmSan Francisco
5h 11m
1 stop
HLN6:11 pmHelena
$278
Find similar
Alaska Airlines
Mar 7
HLN4:36 pmHelena
16h 32m
2 stops
SFO8:08 amSan Francisco
Mar 12
SFO8:42 amSan Francisco
6h 17m
1 stop
HLN3:59 pmHelena
$301
Find similar

United Airlines flights from Helena to San Francisco

Our best United Airlines deals on Helena to San Francisco flight tickets
United Airlines
Jan 29
HLN6:15 amHelena
14h 52m
2 stops
SFO8:07 pmSan Francisco
Feb 1
SFO6:55 pmSan Francisco
17h 46m
2 stops
HLN1:41 pmHelena
$524
Find similar
United Airlines
Mar 7
HLN6:15 amHelena
17h 54m
2 stops
SFO11:09 pmSan Francisco
Mar 12
SFO10:37 pmSan Francisco
14h 01m
2 stops
HLN1:38 pmHelena
$550
Find similar
United Airlines
Dec 30
HLN6:10 amHelena
16h 30m
1 stop
SFO9:40 pmSan Francisco
Jan 3
SFO2:29 pmSan Francisco
6h 02m
1 stop
HLN9:31 pmHelena
$692
Find similar

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 diciembre 17, 2025.
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

jue. 1/29

6:48 pm-11:03 pm

1 stop5h 15m

San Francisco

dom. 2/1

7:00 am-6:11 pm

1 stop10h 11m

$238

HelenaSan Francisco

HLN - SFO

HLNSFO

Helena

vie. 1/9

6:48 pm-11:03 pm

1 stop5h 15m

San Francisco

mar. 1/13

12:00 pm-6:11 pm

1 stop5h 11m

$278

HelenaSan Francisco

HLN - SFO

HLNSFO

Helena

sáb. 3/7

4:36 pm-8:08 am

2 stops16h 32m

San Francisco

jue. 3/12

8:42 am-3:59 pm

1 stop6h 17m

$301

HelenaSan Francisco

HLN - SFO

HLNSFO

Helena

vie. 1/9

6:48 pm-12:23 pm

2 stops18h 35m

San Francisco

mar. 1/13

12:00 pm-6:11 pm

1 stop5h 11m

$306

HelenaSan Francisco

HLN - SFO

HLNSFO

Helena

vie. 1/9

6:48 pm-12:23 pm

2 stops18h 35m

San Francisco

mar. 1/13

12:00 pm-6:11 pm

1 stop5h 11m

$311

HelenaSan Francisco

HLN - SFO

HLNSFO

Helena

vie. 1/9

6:48 pm-12:23 pm

2 stops18h 35m

San Francisco

mar. 1/13

6:40 pm-6:11 pm

2 stops22h 31m

$343

HelenaSan Francisco

HLN - SFO

HLNSFO

Helena

vie. 1/9

6:48 pm-12:23 pm

2 stops18h 35m

San Francisco

mar. 1/13

6:56 pm-6:11 pm

2 stops22h 15m

$353

HelenaSan Francisco

HLN - SFO

HLNSFO

Helena

vie. 1/9

6:48 pm-12:23 pm

2 stops18h 35m

San Francisco

mar. 1/13

5:00 pm-6:11 pm

2 stops24h 11m

$359

HelenaSan Francisco

HLN - SFO

HLNSFO

Helena

sáb. 3/28

4:10 pm-10:10 pm

1 stop7h 00m

San Francisco

dom. 4/12

7:00 am-3:38 pm

1 stop7h 38m

$456

HelenaSan Francisco

HLN - SFO

HLNSFO

Helena

sáb. 3/28

4:10 pm-11:06 pm

2 stops7h 56m

San Francisco

dom. 4/12

7:00 am-3:38 pm

1 stop7h 38m

$521

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 18 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 day to depart on your flight to San Francisco?

The cheapest day to depart from Helena to San Francisco is on a Monday when prices can be found for as low as $327. The most expensive day to fly to San Francisco is Sunday, with ticket prices averaging around $679.

What is the cheapest time of day to depart on your flight to San Francisco?

Our data shows that the cheapest Helena to San Francisco flights are usually those with departure times at noon. Our users have found flights to San Francisco at noon for as low as $356. Flights in the morning are often more expensive with an average ticket price of $421.

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

10h 36m

Direct flights

None
The fastest flight from Helena to San Francisco takes 10h 36m
There are no direct flights from Helena to San Francisco. There are no popular flight routes from Helena to San Francisco.
Search flight deals

  • How far is Helena to San Francisco by plane?

    The distance between Helena and San Francisco is about 805.5 mi. 10h 36m 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
8,005 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
Roseville
Hayward
Calistoga
Big Sur
Berkeley
Santa Clara
Walnut Creek
Fremont
Daly City
Half Moon Bay
Vallejo
Salinas
Livermore
Sunnyvale
Turlock

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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