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

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

Amazing Frontier Airlines SFO to STL Flight Deals

The cheapest flights to Lambert-St. Louis 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 SFO to STL right now?
For any current Lambert Field travel advice and quarantine requirements, visit our Covid-19 Travel Advisor. Look before you arrange your flight, so you don’t get caught up en route.
What terminal is Frontier Airlines at San Francisco Airport?
Once you’ve received the boarding pass for your flight from San Francisco Airport to St. Louis Lambert International Airport, you should be able to identify exactly which terminals Frontier Airlines flies in and out of. If not, contact your carrier or do some online research for that information.
Are there Frontier Airlines non-stop flights from SFO to STL?
If you’re traveling with Frontier Airlines from SFO to STL, you’ll need to make a stopover. While you’re waiting for your connecting flight, take the chance to grab a bite to eat or stretch your legs.
How long is a Frontier Airlines flight from SFO to STL?
Your Frontier Airlines flight from San Francisco Airport to Lambert-St. Louis Intl. Airport (STL) should take about 5 hours and 5 minutes. There are many things you can do to keep yourself entertained. Chatting to the passenger next to you about what travel experiences they’ve had is one of them. If you’d prefer a different sort of in-flight entertainment, you could always watch a TV show.
How many direct and indirect flights does Frontier Airlines fly from SFO to STL?
Frontier Airlines makes getting from SFO to Lambert-St. Louis Intl. Airport (STL) straightforward and stress-free. It is currently operating approximately 9 weekly flights on this route.
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 Lambert-St. Louis Intl. Airport (STL), 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 San Francisco SFO to St. Louis STL 

To find the best deals on flights to San Francisco from St. Louis 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 San Francisco SFO to St. Louis STL 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 San Francisco SFO to St. Louis STL 

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 San Francisco to St. Louis costs from $75. Prices and availability subject to change. Additional terms may apply. 

 

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

To find a cheap Frontier Airlines flight from San Francisco SFO to St. Louis STL, 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 San Francisco SFO to St. Louis STL 

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 San Francisco SFO to St. Louis STL with Frontier Airlines 

If you’re keen to be on St. Louis 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 San Francisco SFO to St. Louis STL 

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 St. Louis STL from  San Francisco SFO 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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