$75 Cheap Frontier Airlines flights from St. Louis to San Francisco (STL to SFO)

Find The Best Day To Fly from St. Louis to San Francisco

Amazing Frontier Airlines STL to SFO Flight Deals

The cheapest flights to San Francisco Intl. found within the past 7 days were round trip and $75 one way. Prices and availability subject to change. Additional terms may apply.

Frequently asked questions

Can I catch a flight from St. Louis Lambert International Airport to San Francisco Intl. Airport (SFO) right now?
It’s always prudent to find out about any travel advice reports and quarantine requirements in place in your destination. Ensure you go to our Covid-19 Travel Advisor for up-to-date info on booking a flight to San Francisco Intl. Airport (SFO) from Lambert Field.
What terminal is Frontier Airlines at St. Louis Lambert International Airport?
Your boarding pass should be able to tell you exactly which terminal your Frontier Airlines flight will be leaving from at St. Louis Lambert International Airport. It might also be able to give you arrival details for San Francisco Airport. If not, it might be a good idea to consult your airline before you fly.
Are there Frontier Airlines non-stop flights from STL to SFO?
Expect to make a stopover when jetting from STL to SFO, as Frontier Airlines doesn’t operate nonstop flights on this route. While waiting for your connection, you might like to grab a new bestseller or an interesting magazine from the airport bookstore to make the time go faster.
How long is a Frontier Airlines flight from STL to SFO?
Your Frontier Airlines flight from STL to SFO will take about 5 hours and 35 minutes. But there are lots of things you can do to keep yourself occupied. Chatting to the person next to you about their travel plans is one of them. If you’d prefer a different type of in-flight entertainment, you could always turn on your TV screen.
How many direct and indirect flights does Frontier Airlines fly from STL to SFO?
Making your way between Lambert Field and San Francisco Intl. Airport (SFO) is a cinch. There are 9 Frontier Airlines flights linking STL and SFO each week.
If I am not able to travel due to COVID-19, can I change my booking to a later date?
For more info about changing your flight to San Francisco Airport, please visit our Customer Service Portal.
What is the best day to buy a plane ticket?
This just in! Airfares offered on Thursdays tend to be the cheapest, according to flight demand on Travelocity in 2021. Tuesday and Wednesday prices are also good, but you may want to prepare your budget if booking during the weekend, as data shows that is when prices are generally at their highest.
What are the cheapest days to fly?
Frequent travelers may already know this, but earlier in the week can be the cheapest time to fly. In 2021, flights departing on a Monday were generally the cheapest of the week, whereas you may pay a premium for weekend flights when demand is usually high. On average, tickets were most expensive for Saturday departures, so if you need to fly out on a weekend, you might look for deals ahead of time.
How far in advance can you book a flight?
Trying to figure out how early you should book your flight? It’s possible to start comparing international airfares on Travelocity up to 12 months in advance. However, it does depend on the carrier as not all airlines release their prices that far out. According to our 2021 flight demand trends, last minute planners can still bag a bargain with some of the cheapest fares appearing 0-2 weeks prior to their travel dates.*According to flight demand on Travelocity.com from January to December 2021. Savings are subject to change based on departure location, date and destination.

Discover our best Frontier Airlines flight from St. Louis STL to San Francisco SFO 

To find the best deals on flights to St. Louis from San Francisco with Frontier Airlines, just enter your travel dates, filter by Frontier Airlines, and hit search. You’ll find flights to choose from and can sort by price, flight duration, and arrival or departure time.  

 

Return flights from St. Louis STL to San Francisco SFO with Frontier Airlines 

If you’re planning a round trip, booking return flights with Frontier Airlines is usually the most cost-effective option. With airfares ranging from to , it’s easy to find a flight that suits your budget. Prices and availability subject to change. Additional terms may apply. 

 

Book one-way Frontier Airlines flights from St. Louis STL to San Francisco SFO 

A one-way ticket gives you much greater flexibility—allowing you to choose your return date, destination, and time whenever you’re ready. By booking in advance you can find great deals on one-way tickets too. Right now, a one-way Frontier Airlines flight from St. Louis to San Francisco costs from $75. Prices and availability subject to change. Additional terms may apply. 

 

The easy way to find cheap flights to San Francisco SFO from  St. Louis STL with Frontier Airlines 

To find a cheap Frontier Airlines flight from St. Louis STL to San Francisco SFO, sort your search results by price or filter by budget. Thanks to Travelocity’s Price Match Promise, if you find a better airfare deal anywhere else within 24 hours, we’ll credit or refund the difference. 

 

How to find our best airfare deals on Frontier Airlines flights from St. Louis STL to San Francisco SFO 

If you’re looking for cheap flights, it helps to be flexible when it comes to your travel dates. You’ll usually find lower cost tickets when you travel during quieter months such as , or if you book a flight with a stopover. 

 

Find nonstop flights from St. Louis STL to San Francisco SFO with Frontier Airlines 

If you’re keen to be on San Francisco soil fast, don’t waste time with a stopover—filter your search results to show direct Frontier Airlines flights only. The journey takes around hour(s) min(s) – so you’ll be there before you know it. 

 

Flexible airline tickets for Frontier Airlines flights from St. Louis STL to San Francisco SFO 

Make sure you’re not out of pocket if plans change by choosing a flexible ticket with penalty-free amendment and cancellation options. Use our ‘no change fee’ filter to see which flights have this option.  

 

There are a lot of reasons to book your flights to San Francisco SFO from  St. Louis STL with Frontier Airlines on Travelocity 

At Travelocity our vast and up-to-the-minute inventory puts all of our best flight deals in one place. So, whether you’re traveling on business or jetting off with friends and family, you can trust Travelocity to get you there.

Frontier Airlines Airports
Hop on a(n) Frontier Airlines flight today by flying to many destinations out of these domestic and international airports:
Airport code
Country
Airport name
Number of flights
DENUSADenver Intl.13
MCOUSAOrlando Intl.7
CUNMEXCancun Intl.6
GDLMEXDon Miguel Hidalgo y Costilla Intl.5
PHLUSAPhiladelphia Intl.2
ORDUSAO'Hare Intl.2
MIAUSAMiami Intl.1
LASUSAMcCarran Intl.1
MEXMEXMexico City Intl.1
LAXUSALos Angeles Intl.1

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