Cheap Flights from Jacksonville (JAX) to St. Louis (SUS)

Popular airlines from Jacksonville International Airport (JAX) to St. Louis, MO (SUS-Spirit of St. Louis)

  • notification illustration

    Be in the know

    Get alerts if flight prices drop or rise*
  • deals illustration

    Book smarter

    Save up to 30% on select hotels after you book a flight*
  • trophy illustration

    Earn twice

    Earn your airline miles on top of our OneKeyCash
    Learn about One Key

Alternative airports near St. Louis

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Lambert-St. Louis Intl. STL. Cheapest option available. Average driving time to city center is 20 minutes. Flights from $317
STL
Lambert-St. Louis Intl.
Cheapest
Average driving time to city center20 min
Flights from $317
Flights from Jacksonville (JAX) to St. Louis (SUS)
Origin airport
Jacksonville Intl.
Destination airport
Spirit of St. Louis
Distance
759 mi

Jacksonville to St. Louis Flights

The cheapest times to fly from Jacksonville to St. Louis

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Jacksonville to St. Louis are during the month of . You can find some of the cheapest flights from Jacksonville to St. Louis with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Jacksonville to St. Louis

Sunday is one of the best days to book for cheap flights from Jacksonville to St. Louis: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Jacksonville to St. Louis

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Jacksonville to St. Louis in 2025. You can also book with separate airlines for your outbound and return journeys, from one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Jacksonville to St. Louis flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Jacksonville to St. Louis airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Frequently asked questions

How much does a flight from Jacksonville Intl. Airport (JAX) to Spirit of St. Louis Airport (SUS) cost?
Lock in a cheap one-way flight or cheap return flight from Jacksonville Intl. Airport (JAX) to Spirit of St. Louis Airport (SUS) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to find our cheapest flight deals on this route.
What is the cheapest month to fly from Jacksonville Intl. Airport (JAX) to Spirit of St. Louis Airport (SUS)?
is the least expensive month to fly from JAX to SUS. Traveling during an off-peak travel window is often the key to scoring lower fares.
What is the cheapest airline that flies from Jacksonville Intl. Airport (JAX) to Spirit of St. Louis Airport (SUS)?
Expedia's filter tool lets you easily compare airlines, flight times and baggage options all in one place. Choose your preferences, then sort by "Price (lowest to highest)" to find out which carrier offers the cheapest JAX to SUS flight.
How many flights per day from Jacksonville Intl. Airport (JAX) to Spirit of St. Louis Airport (SUS)?
Direct flights from Jacksonville Intl. Airport (JAX) to Spirit of St. Louis Airport (SUS) aren't available daily, so you'll need to take a flight with a layover. Explore your options with Expedia's filters. Enter your travel details and click on either "1 Stop" or "2+ Stops."
What day of the week has the most flights from JAX to SUS?
You'll usually find Tuesday the quietest day for flights, while Fridays tend to be the busiest.* However this can vary from season to season and during public holidays or peak travel times.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Jacksonville Intl. Airport (JAX) to Spirit of St. Louis Airport (SUS)?
To avoid potential delays on the Jacksonville Intl. Airport (JAX) to Spirit of St. Louis Airport (SUS) route, aim to travel before 3 PM. Departures after this hour have a 22% higher chance of cancellation.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
What airports do you fly into for St. Louis from Jacksonville Intl. Airport (JAX)?
Lambert-St. Louis Intl. Airport (STL) is the only airport in St. Louis with direct flights from Jacksonville Intl. Airport (JAX). Explore the options and find cheap fares on Expedia.
Is it cheaper to buy a plane ticket from Jacksonville Intl. Airport (JAX) to Spirit of St. Louis Airport (SUS) last-minute?
Last-minute bookings from JAX to SUS are usually more expensive. To secure the best prices, start searching for flights ahead of time. That said, if your travel plans are flexible, you may land a cheap ticket right before your journey.
Is it cheaper to book a JAX to SUS flight and hotel package?
Securing a JAX to SUS flight and hotel package is usually cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your travels all in one place. Select from our impressive range of accommodations and then add activities, car rentals and flights to your booking. Bundle it all together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Jacksonville Intl. Airport (JAX) to Spirit of St. Louis Airport (SUS)?
In most instances, you can cancel or modify your JAX to SUS flight. However, there may be additional fees, especially if you booked over 24 hours ago. Double-check your itinerary for the airline's fees and policies on flight changes, or if you'd like more information, head to our Customer Service portal.

Explore a world of travel with Expedia

*Available to One Key members.