Cheap flights from Helena to San Francisco from $339
This is the cheapest round-trip flight price found by a momondo user in the last 72 hours by searching for a flight from Helena to San Francisco departing on 5/26. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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.Find the cheapest flights from Helena to San Francisco
Cheap round-trip flights
Alaska Airlines flights from Helena to San Francisco
Our best Alaska Airlines deals on Helena to San Francisco flight tickets
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
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
How far is Helena to San Francisco by plane?
The distance between Helena and San Francisco is about 805.5 mi. 18h 04m 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?
The number of operators available for flights from Helena Airport to San Francisco Airport is 1 as of April 2025.
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?
Based on momondo bookings for flights between Helena and San Francisco, the leading airline is Delta, making up 100% of the total bookings.
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 | ||
|---|---|---|---|---|---|
| PriceFrom $246 | Free Cancellation | Rating 8.0 7,936 reviews |
Traveling to a place near San Francisco?
Book flights to San Francisco if you plan to visit one of these locationsWhy 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.