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90 € Cheap Flights from St Louis to Jacksonville International

Compare St Louis to Jacksonville International flight deals

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Flight deals from St Louis to Jacksonville International

Looking for a cheap last-minute deal or the best return flight from St Louis Airport to Jacksonville International Airport? If you want to travel next month, return fares start from 103 €. Find the lowest prices on one-way and return tickets right here.
Jacksonville.90 € per passenger.Departing Thu, 29 Oct, returning Sun, 1 Nov.Return flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from St Louis on Thu, 29 Oct, arriving in Jacksonville International.Inbound indirect flight with Frontier Airlines, departs from Jacksonville International on Sun, 1 Nov, arriving in St Louis.Price includes taxes and charges.From 90 €, select.
Jacksonville.95 € per passenger.Departing Thu, 22 Oct, returning Mon, 26 Oct.Return flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from St Louis on Thu, 22 Oct, arriving in Jacksonville International.Inbound indirect flight with Frontier Airlines, departs from Jacksonville International on Mon, 26 Oct, arriving in St Louis.Price includes taxes and charges.From 95 €, select.
Jacksonville.97 € per passenger.Departing Thu, 20 Aug, returning Sun, 30 Aug.Return flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from St Louis on Thu, 20 Aug, arriving in Jacksonville International.Inbound indirect flight with Frontier Airlines, departs from Jacksonville International on Sun, 30 Aug, arriving in St Louis.Price includes taxes and charges.From 97 €, select.
Jacksonville.98 € per passenger.Departing Thu, 5 Nov, returning Mon, 9 Nov.Return flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from St Louis on Thu, 5 Nov, arriving in Jacksonville International.Inbound indirect flight with Frontier Airlines, departs from Jacksonville International on Mon, 9 Nov, arriving in St Louis.Price includes taxes and charges.From 98 €, select.
Jacksonville.103 € per passenger.Departing Wed, 23 Sep, returning Sun, 27 Sep.Return flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from St Louis on Wed, 23 Sep, arriving in Jacksonville International.Inbound indirect flight with Frontier Airlines, departs from Jacksonville International on Sun, 27 Sep, arriving in St Louis.Price includes taxes and charges.From 103 €, select.
Jacksonville.113 € per passenger.Departing Thu, 27 Aug, returning Thu, 3 Sep.Return flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from St Louis on Thu, 27 Aug, arriving in Jacksonville International.Inbound indirect flight with Frontier Airlines, departs from Jacksonville International on Thu, 3 Sep, arriving in St Louis.Price includes taxes and charges.From 113 €, select.
Jacksonville.159 € per passenger.Departing Wed, 30 Sep, returning Mon, 5 Oct.Return flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from St Louis on Wed, 30 Sep, arriving in Jacksonville International.Inbound indirect flight with Frontier Airlines, departs from Jacksonville International on Mon, 5 Oct, arriving in St Louis.Price includes taxes and charges.From 159 €, select.
Jacksonville.206 € per passenger.Departing Thu, 20 Aug, returning Mon, 24 Aug.Return flight with Southwest Airlines.Outbound direct flight with Southwest Airlines departs from St Louis on Thu, 20 Aug, arriving in Jacksonville International.Inbound direct flight with Southwest Airlines departs from Jacksonville International on Mon, 24 Aug, arriving in St Louis.Price includes taxes and charges.From 206 €, select.
Jacksonville.208 € per passenger.Departing Wed, 2 Dec, returning Wed, 9 Dec.Return flight with Southwest Airlines.Outbound direct flight with Southwest Airlines departs from St Louis on Wed, 2 Dec, arriving in Jacksonville International.Inbound direct flight with Southwest Airlines departs from Jacksonville International on Wed, 9 Dec, arriving in St Louis.Price includes taxes and charges.From 208 €, select.
Jacksonville.208 € per passenger.Departing Thu, 26 Nov, returning Thu, 3 Dec.Return flight with Southwest Airlines.Outbound direct flight with Southwest Airlines departs from St Louis on Thu, 26 Nov, arriving in Jacksonville International.Inbound direct flight with Southwest Airlines departs from Jacksonville International on Thu, 3 Dec, arriving in St Louis.Price includes taxes and charges.From 208 €, select.
Jacksonville.208 € per passenger.Departing Sat, 3 Oct, returning Wed, 7 Oct.Return flight with Southwest Airlines.Outbound direct flight with Southwest Airlines departs from St Louis on Sat, 3 Oct, arriving in Jacksonville International.Inbound direct flight with Southwest Airlines departs from Jacksonville International on Wed, 7 Oct, arriving in St Louis.Price includes taxes and charges.From 208 €, select.
Jacksonville.208 € per passenger.Departing Tue, 25 Aug, returning Tue, 1 Sep.Return flight with Southwest Airlines.Outbound direct flight with Southwest Airlines departs from St Louis on Tue, 25 Aug, arriving in Jacksonville International.Inbound direct flight with Southwest Airlines departs from Jacksonville International on Tue, 1 Sep, arriving in St Louis.Price includes taxes and charges.From 208 €, select.
Jacksonville.208 € per passenger.Departing Wed, 23 Sep, returning Tue, 29 Sep.Return flight with Southwest Airlines.Outbound direct flight with Southwest Airlines departs from St Louis on Wed, 23 Sep, arriving in Jacksonville International.Inbound direct flight with Southwest Airlines departs from Jacksonville International on Tue, 29 Sep, arriving in St Louis.Price includes taxes and charges.From 208 €, select.
Jacksonville.224 € per passenger.Departing Fri, 30 Oct, returning Mon, 2 Nov.Return flight with Southwest Airlines.Outbound direct flight with Southwest Airlines departs from St Louis on Fri, 30 Oct, arriving in Jacksonville International.Inbound direct flight with Southwest Airlines departs from Jacksonville International on Mon, 2 Nov, arriving in St Louis.Price includes taxes and charges.From 224 €, select.
Jacksonville.242 € per passenger.Departing Wed, 30 Sep, returning Mon, 5 Oct.Return flight with Southwest Airlines.Outbound direct flight with Southwest Airlines departs from St Louis on Wed, 30 Sep, arriving in Jacksonville International.Inbound direct flight with Southwest Airlines departs from Jacksonville International on Mon, 5 Oct, arriving in St Louis.Price includes taxes and charges.From 242 €, select.
Jacksonville.274 € per passenger.Departing Mon, 21 Dec, returning Mon, 4 Jan.Return flight with Southwest Airlines.Outbound indirect flight with Southwest Airlines, departs from St Louis on Mon, 21 Dec, arriving in Jacksonville International.Inbound indirect flight with Southwest Airlines, departs from Jacksonville International on Mon, 4 Jan, arriving in St Louis.Price includes taxes and charges.From 274 €, select.

Find the cheapest month to fly from St Louis to Jacksonville International

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like St Louis to Jacksonville International flights are currently cheapest in October.
Aug
from 97 €
Sep
from 103 €
Oct
from 95 €
Nov
from 98 €
Dec
from 208 €
Jan
from 546 €
Feb
from 564 €
Mar
from 322 €
Apr
from 321 €
May
from 313 €
Jun
from 322 €
Jul
Find prices

Direct flights from St Louis to Jacksonville International

St Louis to Jacksonville International: Alternative routes

Compare routes from St Louis to Jacksonville below. You may find an airport to fly into that's cheaper, faster, or easier than Jacksonville International.

Jacksonville International

19km from central Jacksonville
ClosestCheapest
from 90 €
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St Louis to Jacksonville: Flight information

The things to know before you go.
Cheapest flight found90 €
Cheapest month to flyOctober
Average flight time1 hr, 59 mins
Most popular airlineSouthwest Airlines
Average flights per week10

Finding cheap flights from St Louis to Jacksonville International: Frequently asked questions

The best price we found for a return flight from St Louis to Jacksonville International is 90 €. This is an estimate based on information collected from different airlines and travel providers over the last 4 days and is subject to change and availability.
1 hour and 59 minutes is the average flight time from St Louis to Jacksonville International.
Southwest Airlines flies direct from St Louis to Jacksonville International.
As of August 2026, there are 10 flights per week flying from St Louis to Jacksonville International.
The cheapest month to fly from St Louis to Jacksonville International is usually October.
After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from St Louis Airport to Jacksonville International Airport on Thursday, 29 October 2026.
Yes – the average flight time is 1 hour and 59 minutes.
We show every price from over 1,200 airlines and travel agents, comparing them all so you don’t have to. If you know you want to fly to Jacksonville International but you’re not ready to book, set up a Price Alert. We’ll track prices for you, and let you know when they rise or fall.

We crunched all the numbers in our flight calendar and it looks like the cheapest time to book a flight to Jacksonville is around 40 days in advance, so don’t leave your flight to the last minute.

Currently, Frontier Airlines and Southwest Airlines offer the cheapest flight tickets to Jacksonville International.

Flying from St Louis Airport (STL) to Jacksonville International Airport (JAX): what you need to know

  • Take a direct flight from St Louis Airport to Jacksonville International Airport and you'll be travelling for an average of 2 hours.

  • Jacksonville's timezone is UTC-5, making Jacksonville one hour ahead of St Louis.

  • Each week, there are five St Louis Airport to Jacksonville International Airport flights. To take off early, pick the 07:30 Southwest Airlines flight. If you'd rather make the most of your day before flying, the last flight is at 21:15 with Southwest Airlines.

  • To ensure you get on your STL to JAX flight, allow plenty of time to navigate the airport and find your gate. Turning up two hours ahead of international departures and one hour before domestic flights is the general rule.

  • You can expect bigger queues in popular months such as July. Arriving up to four hours in advance for international flights and two hours for domestic departures will help ensure a smooth travel experience.

  • Flying into Jacksonville (and then seeing more of the United States!) is a breeze with Southwest Airlines. This popular airline offers direct flights from St Louis Airport to Jacksonville International Airport.

  • Southwest Airlines is the most frequently booked airline on this route.

  • With a dependable 82.39% of services arriving as planned, Southwest Airlines is the most punctual carrier offering STL to JAX flights.

  • We make it simple to book a flight with a stopover. To see all your options for tickets from St Louis Airport to Jacksonville International Airport, deselect 'Direct flights only.' Then, pick a flight offering a stop long enough to explore the city of your choice. Some great stopovers between STL and JAX include:

    • Atlanta Hartsfield-Jackson Airport

    • Charlotte Douglas Airport

    • New Orleans Louis Armstrong Airport

How to find the cheapest flights from St Louis Airport (STL) to Jacksonville International Airport (JAX)

  • 46 € is the lowest price for a one-way St Louis Airport to Jacksonville International Airport flight. A return flight starts at 90 €. These prices can change depending on availability.

  • It's usually best to book as early as possible if you want to find cheap tickets from STL to JAX. That's because airlines change prices based on demand, which tends to rise closer to the date of departure.

  • The cheapest month for flights from St Louis Airport to Jacksonville International Airport is May. Use the 'Whole month' tool to see the lowest prices if you have a flexible travel schedule.

  • There's no need to check every day to find out if fares have dropped when you create a Price Alert. We'll send you an update the moment there's a new deal on cheap flights from STL to JAX.

  • Tailor your flights with filters. Choose your arrival and departure times, airlines and total journey duration. You can also sort the results by 'Cheapest,' 'Best' or 'Fastest' flights from St Louis Airport to Jacksonville International Airport.

Handy information about St Louis Airport (STL)

Arriving at Jacksonville International Airport (JAX)

When to fly to Jacksonville International Airport (JAX)

  • The quietest month for a flight from St Louis Airport to Jacksonville International Airport is March, while July is the most popular. Pick the ideal time to go to Jacksonville based on whether you prefer a more relaxed vibe or a faster pace.

  • The warmest month in Jacksonville is July, with the temperature ranging between 23ºC (73ºF) and 34ºC (93ºF). Lock in your flights from St Louis Airport to Jacksonville International Airport in this month if you like this kind of weather.

  • If you want cooler conditions, look for a cheap ticket from STL to JAX in January. Temperatures average between 5ºC (41ºF) and 21ºC (70ºF) then.

Explore more of the United States

  • Jacksonville has loads to offer, but there are so many other corners of the United States just waiting to be discovered. About 467 kilometres north-west of Jacksonville, a trip to Atlanta will keep you busy. Start with attractions like Georgia Aquarium, Birth Home of Martin Luther King, Jr and Fox Theatre.

  • Around 274 kilometres south of Jacksonville, Tampa is another favourite stop in the United States. Start your sightseeing at Busch Gardens Tampa, The Florida Aquarium and ZooTampa at Lowry Park.

Prices shown on this page are estimated lowest prices only. Found in the last 12 days.