Latest deals
Insights
When to book
FAQs
Reviews
Price Alerts

Cheap flights from San Francisco to Helena from $177

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from San Francisco to Helena departing on 11/10. 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.

Save money when you book flights with momondo

Big names and deals

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Price Alerts

Not ready to book? to track prices.
Search flight deals

Find the cheapest flights from San Francisco to Helena

Cheap round-trip flights

Delta Logo
5:45 am - 12:27 pmSFO-HLN
5h 42m1 stop
Delta Logo
12:50 pm - 6:42 pmHLN-SFO
6h 52m1 stop
$311Delta
Find Deal
Wed, Mar 4 - Fri, Mar 13
Delta Logo
10:31 am - 10:38 pmSFO-HLN
11h 07m2 stops
Delta Logo
12:50 pm - 6:42 pmHLN-SFO
6h 52m1 stop
$321Delta
Find Deal
Wed, Mar 4 - Thu, Mar 12
Delta Logo
5:45 am - 12:27 pmSFO-HLN
5h 42m1 stop
Delta Logo
12:50 pm - 4:29 pmHLN-SFO
4h 39m1 stop
$336Delta
Find Deal
Wed, Mar 4 - Sat, Mar 14
Delta Logo
6:05 am - 10:38 pmSFO-HLN
15h 33m2 stops
Delta Logo
5:35 am - 9:22 amHLN-SFO
4h 47m1 stop
$346Delta
Find Deal
Wed, Mar 4 - Sat, Mar 14
Delta Logo
5:45 am - 12:27 pmSFO-HLN
5h 42m1 stop
Delta Logo
12:50 pm - 6:42 pmHLN-SFO
6h 52m1 stop
$349Delta
Find Deal
Sat, Mar 7 - Thu, Mar 12
Hawaiian Airlines Logo
8:00 am - 3:21 pmSFO-HLN
6h 21m1 stop
Hawaiian Airlines Logo
6:18 pm - 10:29 pmHLN-SFO
5h 11m1 stop
$405Hawaiian Airlines
Find Deal
Tue, Sep 30 - Tue, Oct 7
Alaska Airlines Logo
9:10 am - 3:43 pmSFO-HLN
5h 33m1 stop
Alaska Airlines Logo
4:10 pm - 10:15 amHLN-SFO
19h 05m1 stop
$443Alaska Airlines
Find Deal
Wed, Mar 4 - Sun, Mar 15
Alaska Airlines Logo
8:00 am - 3:43 pmSFO-HLN
6h 43m2 stops
Alaska Airlines Logo
4:10 pm - 9:11 amHLN-SFO
18h 01m1 stop
$455Alaska Airlines
Find Deal
Wed, Mar 4 - Sun, Mar 15
United Airlines Logo
11:03 am - 2:09 pmSFO-HLN
26h 06m2 stops
United Airlines Logo
5:18 pm - 9:42 amHLN-SFO
17h 24m1 stop
$616United Airlines
Find Deal
Wed, Oct 1 - Sun, Oct 5
United Airlines Logo
8:52 pm - 4:40 pmSFO-HLN
18h 48m1 stop
United Airlines Logo
5:18 pm - 10:57 pmHLN-SFO
6h 39m1 stop
$644United Airlines
Find Deal
Sat, Sep 27 - Sat, Oct 4

United Airlines flights from San Francisco to Helena

Our best United Airlines deals on San Francisco to Helena flight tickets
United Airlines
Sep 26
SFO9:30 pmSan Francisco
23h 44m
2 stops
HLN10:14 pmHelena
Sep 30
HLN5:18 pmHelena
6h 39m
1 stop
SFO10:57 pmSan Francisco
$590
Find similar
United Airlines
Oct 1
SFO11:03 amSan Francisco
26h 06m
2 stops
HLN2:09 pmHelena
Oct 5
HLN5:18 pmHelena
17h 24m
1 stop
SFO9:42 amSan Francisco
$616
Find similar
United Airlines
Sep 27
SFO8:52 pmSan Francisco
18h 48m
1 stop
HLN4:40 pmHelena
Oct 4
HLN5:18 pmHelena
6h 39m
1 stop
SFO10:57 pmSan Francisco
$644
Find similar

Delta flights from San Francisco to Helena

Our best Delta deals on San Francisco to Helena flight tickets
Delta
Mar 4
SFO5:45 amSan Francisco
5h 42m
1 stop
HLN12:27 pmHelena
Mar 13
HLN12:50 pmHelena
6h 52m
1 stop
SFO6:42 pmSan Francisco
$311
Find similar
Delta
Mar 4
SFO10:31 amSan Francisco
11h 07m
2 stops
HLN10:38 pmHelena
Mar 12
HLN12:50 pmHelena
6h 52m
1 stop
SFO6:42 pmSan Francisco
$321
Find similar
Delta
Mar 4
SFO5:45 amSan Francisco
5h 42m
1 stop
HLN12:27 pmHelena
Mar 14
HLN12:50 pmHelena
4h 39m
1 stop
SFO4:29 pmSan Francisco
$336
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from San Francisco to Helena 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 September 17, 2025.
Use the filters below to find and compare flights from San Francisco to Helena that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

San FranciscoHelena

SFO - HLN

SFOHLN

San Francisco

Wed 3/4

5:45 am-12:27 pm

1 stop5h 42m

Helena

Fri 3/13

12:50 pm-6:42 pm

1 stop6h 52m

$311

San FranciscoHelena

SFO - HLN

SFOHLN

San Francisco

Wed 3/4

10:31 am-10:38 pm

2 stops11h 07m

Helena

Thu 3/12

12:50 pm-6:42 pm

1 stop6h 52m

$321

San FranciscoHelena

SFO - HLN

SFOHLN

San Francisco

Wed 3/4

5:45 am-12:27 pm

1 stop5h 42m

Helena

Sat 3/14

12:50 pm-4:29 pm

1 stop4h 39m

$336

San FranciscoHelena

SFO - HLN

SFOHLN

San Francisco

Wed 3/4

6:05 am-10:38 pm

2 stops15h 33m

Helena

Sat 3/14

5:35 am-9:22 am

1 stop4h 47m

$346

San FranciscoHelena

SFO - HLN

SFOHLN

San Francisco

Sat 3/7

5:45 am-12:27 pm

1 stop5h 42m

Helena

Thu 3/12

12:50 pm-6:42 pm

1 stop6h 52m

$349

San FranciscoHelena

SFO - HLN

SFOHLN

San Francisco

Tue 9/30

8:00 am-3:21 pm

1 stop6h 21m

Helena

Tue 10/7

6:18 pm-10:29 pm

1 stop5h 11m

$405

San FranciscoHelena

SFO - HLN

SFOHLN

San Francisco

Wed 3/4

9:10 am-3:43 pm

1 stop5h 33m

Helena

Sun 3/15

4:10 pm-10:15 am

1 stop19h 05m

$443

San FranciscoHelena

SFO - HLN

SFOHLN

San Francisco

Wed 3/4

8:00 am-3:43 pm

2 stops6h 43m

Helena

Sun 3/15

4:10 pm-9:11 am

1 stop18h 01m

$455

San FranciscoHelena

SFO - HLN

SFOHLN

San Francisco

Wed 10/1

11:03 am-2:09 pm

2 stops26h 06m

Helena

Sun 10/5

5:18 pm-9:42 am

1 stop17h 24m

$616

San FranciscoHelena

SFO - HLN

SFOHLN

San Francisco

Sat 9/27

8:52 pm-4:40 pm

1 stop18h 48m

Helena

Sat 10/4

5:18 pm-10:57 pm

1 stop6h 39m

$644

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

See travel insights to Helena from

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

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 Helena?

The cheapest day to depart from San Francisco to Helena is on a Monday. Travelers who choose to depart for Helena on a Monday will often find tickets for as low as $350. The most expensive day to fly to Helena is Sunday, with ticket prices averaging around $706.

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

According to our data, the cheapest time of day to fly to Helena is in the afternoon. momondo users have found flights departing from San Francisco to Helena in the afternoon for as low as $386. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. In contrast, the most expensive time of day to depart to Helena is at noon when prices are around $950.

When to book flights from San Francisco to Helena

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

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

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

Direct flights

None
There are no direct flights from San Francisco to Helena. There are no popular flight routes from San Francisco to Helena.
Search flight deals

  • How far is San Francisco to Helena by plane?

    A flight from San Francisco to Helena will travel around 805.5 mi. Flights usually cover this in 4h 19m, depending on flying conditions and air traffic around both airports.

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

    Prices for flights from San Francisco Airport to Helena Airport refresh daily.

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

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

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from San Francisco Airport to Helena Airport.

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

    The required travel and health documents for your Helena Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Helena Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

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

Best airlines flying from San Francisco to Helena

Compare and see reviews for airlines that fly from San Francisco to Helena with momondo
Airline
Rating
Free Cancellation
Price
DeltaPriceFrom $215Free CancellationRating
7.9
7,961 reviews
Search Delta flights
Alaska AirlinesPriceFrom $273Free CancellationRating
8.0
10,000 reviews
Search Alaska Airlines flights

Why use momondo?

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

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from San Francisco to Helena. Millions of users trust and use momondo every year so you are in good hands.

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

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

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

Once you have performed a search for San Francisco to Helena flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

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

Yes momondo offers price alerts on flights to Helena from San Francisco. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.

An easier way to manage your Helena trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.
Start using Trips
Find my bookings

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.
1 adult
Fri 10/17
Fri 10/24
By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to the United States