Title: Cheap Flights from Helena to San Francisco (HLN to SFO) - Expedia.co.uk ![Sunset view of the Golden Gate Bridge and fog from Battery Spencer, Golden Gate National Recreation Area, in San Francisco, California.](https://images.trvl-media.com/place/508803/0ac688ba-e7fa-4fb1-9f85-037d98869bf8.jpg?impolicy=fcrop&w=1200&h=500&q=medium) ![](https://images.trvl-media.com/place/508803/0ac688ba-e7fa-4fb1-9f85-037d98869bf8.jpg?impolicy=fcrop&w=1200&h=500&q=medium) # Cheap Flights from Helena (HLN) to San Francisco (SFO) - [Return](?flightType=roundtrip) - [One-way](?flightType=oneway) - [Multi-city](?flightType=multicity) ### Travellers Adults ChildrenAges 2 to 17 InfantsYounger than 2 EconomyPremium economyBusiness classFirst class Leaving from Going to Departing Returning Add a place to stay Add a car Direct flights only ## Popular airlines from Helena, MT (HLN-Helena Regional) to San Francisco International Airport (SFO) - ![Alaska Airlines](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_AS.svg) Alaska Airlines [](https://www.expedia.co.uk/Flights-Search?leg1=from:hln,to:sfo,departure:01/10/2025TANYT&leg2=from:sfo,to:hln,departure:08/10/2025TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"AS"}}]) - ![Delta](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_DL.svg) Delta [](https://www.expedia.co.uk/Flights-Search?leg1=from:hln,to:sfo,departure:01/10/2025TANYT&leg2=from:sfo,to:hln,departure:08/10/2025TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"DL"}}]) - ![United](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_UA.svg) United [](https://www.expedia.co.uk/Flights-Search?leg1=from:hln,to:sfo,departure:01/10/2025TANYT&leg2=from:sfo,to:hln,departure:08/10/2025TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"UA"}}]) - ![Hawaiian Airlines](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_HA.svg) Hawaiian Airlines [](https://www.expedia.co.uk/Flights-Search?leg1=from:hln,to:sfo,departure:01/10/2025TANYT&leg2=from:sfo,to:hln,departure:08/10/2025TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"HA"}}]) ![notification illustration](https://a.travel-assets.com/travel-assets-manager/pictogram-bex/light__notification.svg) ### Be in the know Get alerts if flight prices drop or rise\* ![deals illustration](https://a.travel-assets.com/travel-assets-manager/pictogram-bex/light__deals.svg) ### Book smarter Save up to 25% on select hotels after you book a flight\* ![trophy illustration](https://a.travel-assets.com/travel-assets-manager/pictogram-bex/light__trophy.svg) ### Earn twice Earn your airline miles on top of our rewards [Sign in](https://www.expedia.co.uk/login) ## Find the cheapest month to fly from Helena (HLN) to San Francisco (SFO) ### January is typically the cheapest month to fly From £163 - £455 per traveller. Flight from Helena to San Francisco route information | Origin airport | Helena Regional | | --- | --- | | Destination airport | San Francisco Intl. | | Distance | 1307 km | ## Compare flights from Helena to San Francisco easily and book with confidence For travelling on business or for pleasure, Expedia makes it easy to book your flights from Helena to San Francisco. Operating between them flights per day, airlines cover the route. And fly direct, getting you to San Francisco Intl. in just hours. If you have a preferred carrier, use our advanced search tool to find the right flight from Helena Regional to San Francisco Intl..   To make things even better, in the advanced search, you can also choose to fly economy, premium economy, business or first class, select your maximum number of stops, and pick your preferred departure and arrival time. You can also opt for refundable and direct flights.  Grab a great deal on your flight from Helena Regional (HLN) to San Francisco Intl. (SFO) The easiest way to view the best deals on flights from Helena to San Francisco today is to enter your travel dates and hit search. From here, you can sort your results by price to see the cheapest flights first. Right now, return flights from Helena Regional to San Francisco Intl. start at just and range up to .   To find an even better deal, try   - being flexible on your dates – midweek flights can be cheaper - looking for other airports near Helena and San Francisco - booking your flight during , the cheapest month on this route - varying your flight times – early morning and late at night are sometimes cheaper  Why you should book your Helena to San Francisco flight with Expedia! We cater for all flight types, cabin classes and airlines. So whether you’re booking flights from Helena Regional to San Francisco Intl. for a budget break or a business trip with a bit of pleasure thrown in, we make it easy to secure the seat that’s right for you.   Thanks to our supersized inventory that offers great choice all in one place, you know you’ll get a great deal with Expedia. Especially if you bundle your flight together with your hotel, you will unlock amazing savings. For added peace of mind, you can choose flexible bookings or filter to find refundable options, so you won’t pay a fee to change your flight.   ## Frequently asked questions ### How much is a flight from HLN to San Francisco Airport? > If you're travelling between Helena Regional Airport and SFO, round-trip journeys start from . This price is based on fares listed within the last 7 days on Expedia for flights departing within the next year, so don't let a good deal slip through your fingers. Book today and save yourself both money and time. Prices and availability are subject to change. Additional terms apply. ### Do I need to pay a cancellation fee if I cancel my flight from Helena Regional Airport to San Francisco Airport? > Most flights can be conveniently cancelled online, but whether or not you incur a fee depends on your airline. If you do need to cancel your escape, follow the easy instructions in the [Customer Service Portal](https://www.expedia.co.uk/service/?langid=1033). ### How do I find cheap flights from Helena Regional Airport (HLN) to SFO that have flexible change policies? > Many airlines offer the option to reschedule your flight without a change fee. All you pay is the difference between the original flight and the new flight. When you're searching for Helena Regional Airport (HLN) to SFO flights, you'll see a "no change fees" filter for you to select. ### How far is the flight from Helena Regional Airport (HLN) to SFO? > The flight distance from Helena Regional Airport (HLN) (HLN) to SFO (SFO) is 1,300 kilometres. You'll be stepping off the plane and grabbing your bags from the carousel before long. ### Which airlines fly direct from HLN to SFO? > There are no direct flights, so you'll need to make at least one stop between Helena Regional Airport (HLN) and San Francisco Intl. Airport (SFO). Take advantage of the layover time to stretch your legs and grab a bite to eat. ### Are Helena Regional Airport to San Francisco Airport flight tickets cheaper when they're purchased at the last minute? > Last-minute bookings from Helena Regional Airport (HLN) to San Francisco Intl. Airport (SFO) can be hit-or-miss. It is possible to score a bargain, but then again, you could miss out entirely! If you'd rather start planning your trip ahead of time, Expedia compares flight deals up to 12 months in advance. Just bear in mind that not all airlines advertise their prices so far in advance. Our suggestion? Check back often as updates are made frequently. ## Explore a world of travel with Expedia - Flights ### Flights - [Flights from Albuquerque (ABQ) to Oakland (OAK)](https://www.expedia.co.uk/lp/flights/abq/oak/albuquerque-to-oakland) - [Flights from Eureka (ACV) to Oakland (OAK)](https://www.expedia.co.uk/lp/flights/acv/oak/eureka-to-oakland) - [Flights from Addis Ababa (ADD) to Oakland (OAK)](https://www.expedia.co.uk/lp/flights/add/oak/addis-ababa-to-oakland) - [Flights from Amsterdam (AMS) to San Jose (SJC)](https://www.expedia.co.uk/lp/flights/ams/sjc/amsterdam-to-san-jose) - [Flights from Appleton (ATW) to Oakland (OAK)](https://www.expedia.co.uk/lp/flights/atw/oak/appleton-to-oakland) - [Flights from Austin (AUS) to Palo Alto (PAO)](https://www.expedia.co.uk/lp/flights/aus/pao/austin-to-palo-alto) - [Flights from Tucson (AVW) to Palo Alto (PAO)](https://www.expedia.co.uk/lp/flights/avw/pao/tucson-to-palo-alto) - [Flights from Hartford (BDL) to Oakland (OAK)](https://www.expedia.co.uk/lp/flights/bdl/oak/hartford-to-oakland) - [Flights from Bridgetown (BGI) to San Jose (SJC)](https://www.expedia.co.uk/lp/flights/bgi/sjc/bridgetown-to-san-jose) - [Flights from Birmingham (BHX) to Oakland (OAK)](https://www.expedia.co.uk/lp/flights/bhx/oak/birmingham-to-oakland) - [Flights from Boulder City (BLD) to Oakland (OAK)](https://www.expedia.co.uk/lp/flights/bld/oak/boulder-city-to-oakland) - [Flights from Nashville (BNA) to Palo Alto (PAO)](https://www.expedia.co.uk/lp/flights/bna/pao/nashville-to-palo-alto) - [Flights from Bogotá (BOG) to Oakland (OAK)](https://www.expedia.co.uk/lp/flights/bog/oak/bogota-to-oakland) - [Flights from Boston (BOS) to Oakland (OAK)](https://www.expedia.co.uk/lp/flights/bos/oak/boston-to-oakland) - [Flights from Bristol (BRS) to Oakland (OAK)](https://www.expedia.co.uk/lp/flights/brs/oak/bristol-to-oakland) - [Flights from Burbank (BUR) to Oakland (OAK)](https://www.expedia.co.uk/lp/flights/bur/oak/burbank-to-oakland) - [Flights from Burbank (BUR) to San Jose (SJC)](https://www.expedia.co.uk/lp/flights/bur/sjc/burbank-to-san-jose) - [Flights from Baltimore (BWI) to Oakland (OAK)](https://www.expedia.co.uk/lp/flights/bwi/oak/baltimore-to-oakland) - [Flights from Cortez (CEZ) to Oakland (OAK)](https://www.expedia.co.uk/lp/flights/cez/oak/cortez-to-oakland) - [Flights from Charlotte (CLT) to Oakland (OAK)](https://www.expedia.co.uk/lp/flights/clt/oak/charlotte-to-oakland) - [Flights from Charlotte (CLT) to San Jose (SJC)](https://www.expedia.co.uk/lp/flights/clt/sjc/charlotte-to-san-jose) - [Flights from Washington (DCA) to Oakland (OAK)](https://www.expedia.co.uk/lp/flights/dca/oak/washington-to-oakland) - [Flights from Washington (DCA) to San Jose (SJC)](https://www.expedia.co.uk/lp/flights/dca/sjc/washington-to-san-jose) - [Flights from Denver (DEN) to San Jose (SJC)](https://www.expedia.co.uk/lp/flights/den/sjc/denver-to-san-jose) - [Flights from Dallas (DFW) to Oakland (OAK)](https://www.expedia.co.uk/lp/flights/dfw/oak/dallas-to-oakland) - [Flights from Detroit (DTW) to San Jose (SJC)](https://www.expedia.co.uk/lp/flights/dtw/sjc/detroit-to-san-jose) - [Flights from Dublin (DUB) to Oakland (OAK)](https://www.expedia.co.uk/lp/flights/dub/oak/dublin-to-oakland) - [Flights from Dublin (DUB) to San Jose (SJC)](https://www.expedia.co.uk/lp/flights/dub/sjc/dublin-to-san-jose) - [Flights from Edinburgh (EDI) to Oakland (OAK)](https://www.expedia.co.uk/lp/flights/edi/oak/edinburgh-to-oakland) - [Flights from Edinburgh (EDI) to San Jose (SJC)](https://www.expedia.co.uk/lp/flights/edi/sjc/edinburgh-to-san-jose) - [Flights from El Dorado (ELD) to Oakland (OAK)](https://www.expedia.co.uk/lp/flights/eld/oak/el-dorado-to-oakland) - [Flights from East Midlands (EMA) to Oakland (OAK)](https://www.expedia.co.uk/lp/flights/ema/oak/east-midlands-to-oakland) - [Flights from Newark Liberty Intl. 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