$167 Find Cheap Flights from Helena to San Francisco Bay Area

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Helena to San Francisco Bay Area departing on 9/2. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy

KAYAK searches hundreds of travel sites at once for deals on flights to San Francisco Bay Area

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Helena to San Francisco Bay Area, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Helena to San Francisco Bay Area, as well as popular online travel agencies
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Flights Deals

Best San Francisco Bay Area Flight Deals from Helena

Cheapest round-trip prices found by our users on KAYAK in the last 72 hours
San Francisco
San Francisco1 stop$328
San Jose
San Jose1 stop$744
San Francisco
San Francisco1 stop$328
San Jose
San Jose1 stop$744

Cheap Flights from Helena to San Francisco Bay Area

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Helena to San Francisco Bay Area that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Helena to San Francisco Bay Area

Wed, Nov 19 - Sun, Nov 23
Delta Logo
5:40 am - 9:13 amHLN-SFO
4h 33m1 stop
Delta Logo
5:45 am - 12:24 pmSFO-HLN
5h 39m1 stop
$328Delta
Find Deal
Thu, Jul 17 - Sat, Jul 19
Delta Logo
1:00 pm - 4:13 pmHLN-SFO
4h 13m1 stop
Delta Logo
5:30 am - 12:20 pmSFO-HLN
5h 50m1 stop
$329Delta
Find Deal
Tue, Jul 29 - Sat, Aug 2
Delta Logo
5:50 am - 9:17 amHLN-SFO
4h 27m1 stop
Delta Logo
5:08 pm - 10:56 pmSFO-HLN
4h 48m1 stop
$339Delta
Find Deal
Wed, Nov 19 - Sun, Nov 23
Alaska Airlines Logo
6:13 pm - 10:40 pmHLN-SFO
5h 27m1 stop
Alaska Airlines Logo
8:00 am - 3:43 pmSFO-HLN
6h 43m2 stops
$399Alaska Airlines
Find Deal
Thu, Jul 17 - Sat, Jul 19
Alaska Airlines Logo
4:09 pm - 11:59 pmHLN-SFO
8h 50m2 stops
Alaska Airlines Logo
6:00 am - 3:31 pmSFO-HLN
8h 31m1 stop
$452Alaska Airlines
Find Deal
Tue, Jul 29 - Sat, Aug 2
Alaska Airlines Logo
4:09 pm - 11:57 pmHLN-SFO
8h 48m2 stops
Alaska Airlines Logo
6:00 am - 3:31 pmSFO-HLN
8h 31m1 stop
$474Alaska Airlines
Find Deal
Tue, Jul 29 - Sat, Aug 2
Alaska Airlines Logo
4:09 pm - 11:57 pmHLN-SFO
8h 48m2 stops
Alaska Airlines Logo
7:05 pm - 3:31 pmSFO-HLN
19h 26m2 stops
$514Alaska Airlines
Find Deal
Mon, Jul 28 - Sat, Aug 2
United Airlines Logo
5:39 pm - 6:42 amHLN-SFO
14h 03m1 stop
United Airlines Logo
7:03 pm - 1:58 pmSFO-HLN
17h 55m1 stop
$515United Airlines
Find Deal
Mon, Jul 28 - Sat, Aug 2
United Airlines Logo
5:39 pm - 6:42 amHLN-SFO
14h 03m1 stop
United Airlines Logo
10:35 pm - 4:55 pmSFO-HLN
17h 20m2 stops
$535United Airlines
Find Deal
Wed, Nov 19 - Sun, Nov 23
 Logo
2:22 pm - 9:29 pmHLN-SFO
8h 07m2 stops
 Logo
8:00 am - 3:43 pmSFO-HLN
6h 43m2 stops
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KAYAK's insights & trends for Helena to San Francisco Bay Area flights

Get data-powered insights and trends into flights from Helena to San Francisco Bay Area to help you find the cheapest flights, the best time to fly and much more.

Can I save money by flying with a layover from Helena to San Francisco Bay Area?

The average round-trip price for all non-stop flights, flights with one layover, and flights with two layovers for the route found by users searching on KAYAK in the last 2 weeks.

No, with an average price for the route of $429, prices are generally cheapest when you fly direct.

What’s the cheapest day of the week to fly from Helena to San Francisco Bay Area?

The average price of all round-trip flights from Helena to San Francisco Bay Area clicked on KAYAK for each day over the last 12 months.

If your flying dates are flexible, you should consider flying to San Francisco Bay Area on a Monday, as we generally find the cheapest rates on that day for this route. On the other hand, Sunday is the most expensive day to fly from Helena to San Francisco Bay Area. For your return ticket, we recommend flying on a Monday and avoiding Sundays for the best deals.


Good to know

Low seasonMay
High seasonMarch
Cheapest flight$167
Best time to beat the crowds with an average 3% drop in price.
Most popular time to fly with an average 26% increase in price.
Flight from Helena to San Francisco

FAQs - booking San Francisco Bay Area flights

  • How does KAYAK find such low prices on flights from Helena to San Francisco Bay Area?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Helena to San Francisco Bay Area.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Helena to San Francisco Bay Area?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from Helena to San Francisco Bay Area is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Helena to San Francisco Bay Area?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly from Helena to San Francisco Bay Area with an airline and back with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Helena to San Francisco Bay Area?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying from Helena to San Francisco Bay Area up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

  • What is the cheapest time of day to fly to San Francisco Bay Area?

    The cheapest time of day to fly to San Francisco Bay Area is generally in the afternoon, when round-trip flights cost $356 on average. Morning departures are around 9% more expensive than evening flights, on average. The most expensive time of day to fly to San Francisco Bay Area is generally in the morning, which is peak travel time and where the average cost of a ticket is $421.

Reviews of the top airline flying from Helena to San Francisco Bay Area

 
See real verified KAYAK customer reviews for airlines flying from Helena to San Francisco Bay Area. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Helena to San Francisco Bay Area? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
8.0
DeltaOverall score based on 7965 reviews
7.9Comfort
7.9Entertainment
8.2Boarding
8.5Crew
7.3Food
Airline reviews

5 hours of delay that could've been much shorter if Delta had taken the 1 hour delay they imposed on the flight before boarding to run any of the plane checks required for flight to find the hydraulic issue that required nearly 3 hours to fix. $24 of meal credit buys a sandwich and a soft drink. Poor communication within the terminal about what gate we'd be re-boarding from and when we'd be re-boarding.

2.0 MediocreAnonymous, Jun 2025BOS - LAX
Read more Delta reviews

5 hours of delay that could've been much shorter if Delta had taken the 1 hour delay they imposed on the flight before boarding to run any of the plane checks required for flight to find the hydraulic issue that required nearly 3 hours to fix. $24 of meal credit buys a sandwich and a soft drink. Poor communication within the terminal about what gate we'd be re-boarding from and when we'd be re-boarding.

The entertainment and wifi mostly didn't work on this flight.

Terrible entertainment system - kept freezing and audio kept cutting out. Snacks were mediocre at best for a 5 hour flight.

I am still upset that my bag was lost on a recent trip to Rome ; we were inconvenienced and out €150 Euros ; delta has refused to reimburse us

This had nothing to do with Delta… The flights were on time and flawless. The service was excellent. We purchased seats in (aisle/middle) comfort plus since this was a cross country flight. Unfortunately, the woman seated at the window was 300+ pounds and, as might be expected, covered up about a third of the middle seat also. there was absolutely nothing that Delta could have done about that… I just don’t know what the answer should be. If you purchase a seat, you should should be able to use the entire seat and not just the portion that someone else is not sitting/oozing in. Disappointing…there should be something that could be done….I'm just not sure what solution could be.

Seats are much much more comfortable than United, which is what I usually fly

If I pay extra for "comfort+" I expect leg room where I can stretch my legs. I was seated with an attendant's seat blocking my feet. Knee space was fine but my feet had less room than the non-"comfort+" seats. Also, don't go cheap on food when you have flights of 3+ hours. It's insulting.

Only one side of the heafphone jack work. Crew was friendly and helpful.

Great. Flight departed early and arrived early. Deplaning and baggage claim ww were quick.

They separated our seats and moved us to the back of the plane. Hundreds of dollars and thousands of miles used and this was my platinum member experience.

Everything you need to know for your flight to San Francisco Bay Area

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