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Amazing Frontier Airlines STL to SAN Flight Deals

The cheapest flights to San Diego Intl. found within the past 7 days were $98 round trip and $49 one way. Prices and availability subject to change. Additional terms may apply.


SAN From STL Economy Coach Packages on Similar Airlines


FAQs about Frontier Airlines Flights from STL to SAN

What terminal is Frontier Airlines at St. Louis Lambert International Airport?

As soon as you're given your boarding pass for your Frontier Airlines flight from St. Louis, MO (STL-Lambert-St. Louis Intl.) to San Diego, CA (SAN-San Diego Intl.), check if the terminal details are written on it. If not, you might like to ask your airline. They'll be able to let you know exactly where you'll be flying into and out of.

Are there Frontier Airlines non-stop flights from STL to SAN?

There are no direct flights with Frontier Airlines from St. Louis, MO (STL-Lambert-St. Louis Intl.) to San Diego, CA (SAN-San Diego Intl.). You will have at least one stopover, so use this time to stretch your legs before your connecting flight.

How long is a Frontier Airlines flight from STL to SAN?

Air traffic and weather permitting, your Frontier Airlines flight from STL to SAN should take about 5 hours and 1 minute. That means you've got plenty of time to enjoy some refreshments, have a snooze and review your travel schedule before you disembark.

How many direct and indirect flights does Frontier Airlines fly from STL to SAN?

You're not short on choice if you're jetting from STL to SAN. You'll find approximately 26 Frontier Airlines flights which operate on the route every month.

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 Diego, CA (SAN-San Diego Intl.), please visit our Customer Service Portal.

What is the best day to buy a plane ticket?

This just in! Airfares offered on Tuesdays tend to be the cheapest, according to flight demand on Travelocity in 2019. Wednesday and Friday prices are also good, but you may want to prepare your budget if booking on a Monday, as data shows the start of the week 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 2019, flights departing on a Tuesday 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 2019 flight demand trends, last minute planners can still bag a bargain with some of the cheapest fares appearing 1-2 weeks prior to their travel dates.

How can I save money on airline tickets?

We'll let you in on a secret...You can save big on flights if you mix and match your airlines and fare types. In fact, travelers who booked flights on Travelocity in 2019 saved nearly 50% when their return flights consisted of two different airlines or fare types.

*According to flight demand on Travelocity.com from January to December 2019. Savings are subject to change based on departure location, date and destination.

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*Price based on the lowest price found within past 24 hours and based upon one night stay for two adults over the next thirty days. Prices and availability subject to change. Additional terms may apply.