$79 Find Cheap Flights from Jacksonville to Illinois

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Jacksonville to Illinois departing on 5/29. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
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KAYAK searches hundreds of travel sites at once for deals on flights to Illinois

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Jacksonville to Illinois, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Jacksonville to Illinois, as well as popular online travel agencies
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Flights Deals

Best Illinois Flight Deals from Jacksonville

Cheapest round-trip prices found by our users on KAYAK in the last 72 hours

Chicago
Chicago1 stop$223
Moline
Moline1 stop$229
Peoria
Peoria1 stop$249
St. Louis
St. Louis1 stop$177
Chicago
Chicago1 stop$223
Moline
Moline1 stop$229
Peoria
Peoria1 stop$249
St. Louis
St. Louis1 stop$177

Cheap Flight Deals from Jacksonville to Illinois (JAX-USIL)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Jacksonville to Illinois that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.

Recent round-trip flight deals from Jacksonville to Illinois

Recommended round-trip deals departing in the coming months from the most popular airlines that fly from Jacksonville to Illinois.
Discover the best prices for you by selecting your travel dates on KAYAK.
Delta Logo
6:10 am - 9:41 amJAX-STL
4h 31m1 stop
Delta Logo
5:23 pm - 11:54 pmSTL-JAX
5h 31m1 stop
$177Delta
Find Deal
Thu, Jul 31 - Sun, Aug 3
Delta Logo
8:14 pm - 11:38 pmJAX-STL
4h 24m1 stop
Delta Logo
5:40 pm - 10:06 pmSTL-JAX
3h 26m1 stop
$188Delta
Find Deal
Thu, May 29 - Tue, Jun 3
American Airlines Logo
6:13 pm - 11:59 pmJAX-STL
6h 46m1 stop
American Airlines Logo
7:20 am - 1:23 pmSTL-JAX
5h 03m1 stop
$199American Airlines
Find Deal
Thu, Jun 19 - Tue, Jun 24
Southwest Logo
6:45 pm - 8:00 pmJAX-STL
2h 15mnonstop
Southwest Logo
7:00 pm - 9:55 pmSTL-JAX
1h 55mnonstop
$220Southwest
Find Deal
Tue, May 20 - Sun, May 25
Southwest Logo
3:35 pm - 9:50 pmJAX-STL
7h 15m1 stop
Southwest Logo
7:00 pm - 9:55 pmSTL-JAX
1h 55mnonstop
$230Southwest
Find Deal
Tue, May 20 - Sun, May 25
American Airlines Logo
2:12 pm - 8:41 pmJAX-PIA
7h 29m1 stop
American Airlines Logo
10:10 am - 4:48 pmPIA-JAX
5h 38m1 stop
$249American Airlines
Find Deal
Wed, Sep 10 - Fri, Sep 19
Frontier Logo
11:55 am - 7:52 pmJAX-MDW
8h 57m1 stop
Frontier Logo
7:40 am - 6:18 pmMDW-JAX
9h 38m1 stop
$258Frontier
Find Deal
Fri, Jun 6 - Mon, Jun 9
United Airlines Logo
4:40 pm - 6:25 pmJAX-ORD
2h 45mnonstop
United Airlines Logo
7:00 am - 10:39 amORD-JAX
2h 39mnonstop
$277United Airlines
Find Deal
Sat, Jul 19 - Tue, Jul 22
United Airlines Logo
4:40 pm - 6:25 pmJAX-ORD
2h 45mnonstop
United Airlines Logo
6:00 am - 2:49 pmORD-JAX
7h 49m1 stop
$283United Airlines
Find Deal
Sat, Jun 7 - Wed, Jun 11
Frontier Logo
11:58 am - 5:01 pmJAX-ORD
6h 03m1 stop
Frontier Logo
5:50 am - 6:06 pmORD-JAX
11h 16m1 stop
$290Frontier
Find Deal
Fri, May 23 - Mon, May 26
Useful Info

KAYAK's insights & trends for Jacksonville to Illinois flights

Get data-powered insights and trends into flights from Jacksonville to Illinois to help you find the cheapest flights, the best time to fly and much more.

What is the cheapest Jacksonville to Illinois flight route?

The cheapest price for flight routes found by users searching on KAYAK in the last 2 weeks for round-trip flights from Jacksonville to Illinois.

The cheapest ticket to Illinois from Jacksonville found in the last 72 hours was to Belleville, at $248 round-trip. The most popular route is from Jacksonville (JAX) to Chicago O'Hare Intl Airport (ORD), and the cheapest round-trip airline ticket found on this route in the last 72 hours was $253.

Can I save money by flying with a layover from Jacksonville to Illinois?

The average round-trip price for all non-stop flights, flights with one layover, and flights with two layovers for the route found by users searching on KAYAK in the last 2 weeks.

No, with an average price for the route of $614, prices are generally cheapest when you fly direct.

What is the cheapest month to fly from Jacksonville to Illinois?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Jacksonville to Illinois, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Jacksonville to Illinois is September, when tickets cost $305 (return) on average. On the other hand, the most expensive months are December and October, when the average cost of round-trip tickets is $405 and $393 respectively.

What’s the cheapest day of the week to fly from Jacksonville to Illinois?

The average price of all round-trip flights from Jacksonville to Illinois clicked on KAYAK for each day over the last 12 months.

For Jacksonville to Illinois, Thursday is the cheapest day to fly on average and Sunday is the most expensive. Flying from Illinois back to Jacksonville, the best deals are generally found on Wednesday, with Sunday being the most expensive.

How far in advance should I book a flight from Jacksonville to Illinois?

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Jacksonville to Illinois, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below average price on the flight from Jacksonville to Illinois, you should book around 4 weeks before departure. For the absolute cheapest price, our data suggests you should book 18 weeks before departure.


Good to know

Low seasonJanuary
High seasonMay
Cheapest flight$79
Best time to beat the crowds but there is an average 9% increase in price.
Most popular time to fly and prices are also 15% lower on average.
Flight from Jacksonville to St. Louis

FAQs - booking Illinois flights

  • How does KAYAK find such low prices on flights from Jacksonville to Illinois?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Jacksonville to Illinois.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Jacksonville to Illinois?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from Jacksonville to Illinois is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Jacksonville to Illinois?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly from Jacksonville to Illinois with an airline and back with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Jacksonville to Illinois?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying from Jacksonville to Illinois up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

  • What is the cheapest time of day to fly to Illinois?

    The cheapest time of day to fly to Illinois is generally at night, when round-trip flights cost $437 on average. Morning departures are around 2% cheaper than evening flights, on average. The most expensive time of day to fly to Illinois is generally in the afternoon, which is peak travel time and where the average cost of a ticket is $513.

Top tips for finding cheap flights to Illinois

  • Looking for a cheap flight? 25% of our users found tickets from Jacksonville to the following destinations at these prices or less: Chicago $197 one-way - $369 round-trip

Top 5 airlines serving from Jacksonville to Illinois

 
See real verified KAYAK customer reviews for airlines flying from Jacksonville to Illinois. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Jacksonville to Illinois? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
8.0
SouthwestOverall score based on 4294 reviews
8.0Comfort
8.2Boarding
7.6Entertainment
7.1Food
8.6Crew
Airline reviews

The price of the tickets isn't matching the flight experience. No matter how long the flight is, you're only getting pretzels. The flight attendants looked unkept and over it.

6.0 GoodJennifer, Apr 2025FLL - RDU
Read more Southwest reviews

The price of the tickets isn't matching the flight experience. No matter how long the flight is, you're only getting pretzels. The flight attendants looked unkept and over it.

WiFi on the flight was not working. Thus, entertainment options were limited.

Flight was awfully bumpy and landing was a bit jolting. I was in the restroom when snacks and drinks were served and was not asked if i wanted any. I had to ask for water finally.

Crew was great flight was great baggage claim was a failure. It took over 1 hour for bags to arrive. Poor communication poor effort when I spoke to the supervisor about the delay

Planes are aged. The wifi is unreliable and on many fights, no-existent. The flight attendants were very good.

I had a wonderful flight, but the only thing that annoyed me was how crowded TSA was. I still believe airports and all planes work together to bunch everyone together to drive up cost.

Easy to book and to get check in and get on and off.

Everything worked well. Crew was as entertaining as is possible on a plane flight. Southwest still has good legroom:

I like that it was on time and the staff was friendly.

Glad flight made it out. So many delays due to hurricane. everyone did a great job.

This had nothing to do with Delta… The flights were on time and flawless. The service was excellent. We purchased seats in (aisle/middle) comfort plus since this was a cross country flight. Unfortunately, the woman seated at the window was 300+ pounds and, as might be expected, covered up about a third of the middle seat also. there was absolutely nothing that Delta could have done about that… I just don’t know what the answer should be. If you purchase a seat, you should should be able to use the entire seat and not just the portion that someone else is not sitting/oozing in. Disappointing…there should be something that could be done….I'm just not sure what solution could be.

The worst part was I was NOT allowed in the lounge even though I was holding a first class ticket and have a premium American Express card. I have flown Business or First Class with many airlines. Delta is the ONLY one who does not extend this courtesy to anyone except people who hold the very expensive American Express card. As a result, I won’t fly Delta if I have any other choice.

The Dekta Rep that checked us in was great. She's very personable, pleasant, and can tell she enjoys her job.

The young man who was our flight attendant in first class was lazy and did not do his job well at all. Never offered drinks upon boarding - actually I take that back... said "are you okay with water" as if I do not want to get you anything else, only passed the snacks around once, got my drink order wrong and then never offered a second round of drinks. He was the worst I have ever seen on Delta and we fly a lot.

Flight left early and arrived early. the whole trip was excellent.

Newer plane, relatively easy boarding, not a full flight and was told that we could not be moved up because of weight and balance issues. Otherwise, a very good experience.

Everything was great. Great service, excellent communication, and early arrival

I sat in comfort plus. It was fine. Seats were comfortable. I got drinks and snacks.

Good and consistent Printer in lounge did not work for me :(

Great - This was the last flight before hurricane closures and did a quick turnaround to get the plane heading north. Much appreciated.

Smooth flight. Boarding was chaotic. Could not hear the gate agent over the intercom. People were lined up in the wrong lines. Groups one and two were told to board through line one and group 3 through line 2. All very confusing. Once in the air, the flight was smooth. There was no entertainment option on this aircraft, even though it was a larger aircraft.

Overall poor for me I paid extra for seats with leg room and my regional flights exit row seats have less leg room then the others that's money that could have been saved and on my final flight home the flights air was not operating it was unbearably hot in the cabin I will be contacting United and filing a DOT complaint

There's just no way to sit fully upright and comfortably in these seats. There needs to be 2 more inches of room, and that's not something that only one person on the flight needs - the whole flight needs 2 more inches of room. If that means you sell 6 less seats, so be it. It's too close for anyone. Forcing people to pay for "premium" economy just to get "barely enough space to breathe" isn't really an answer to that.

The crew were very nice. The Chocolate is good and v there’s no entertainment. Thanks

The crew were very nice. I would have appreciated a pillow for comfort. I had a special meal that was sloppy, but the salad was great. Thanks

The plane was in Moline all night. Consequently, we assumed an on time departure at 8:15am. Unfortunately, and as is the normal case with United in Moline, we departed 2.5 hours late. When the crew came, it was discovered that there was very little heat in the plane. Seems this should have been checked hours before the crew arrived. Then when we boarded and the plane was to be de-iced, the United de-icing truck was not working! We awaited the American Airlines truck. All of this caused us to miss our connection in Chicago. My suggestion is never take United Airlines flight from Moline. We have been disappointed 80% of the time and have vowed to not take United again from Moline.

Flight was delayed two hours. No snacks and no tv screens. My bag got stuck in Chicago

The aircrew was solid, the flight was chill, I had no issues. The gate agent was not the best. I was trying to use a military bag upgrade to move my bag from under the seat to the overhead bins and he told me there’s no overhead bins on the plane, argued with me why booking put a military member in basic economy (I don’t really understand this) and made it an issue to even try to help me stating I’d have to call reservations to get a bag upgrade. When every other agent with United can add it at the gate, this man couldn’t be bothered.

They canceled our flight and left us stranded to figure it out

Everything was very good. Was able to change a make run flight leaving on direct earlier in the app -seamless!!! Well done

To start, I’d like to say that every American Airline personnel I interacted with on the ground, especially flight crew, was very friendly and did their best to help me out. Despite this, however, my experience with the airline was an entire mess. The 7:19 PM flight was heavily delayed due to weather, and pushed to 10:30 AM the next morning. Because of this, I had to spend the night inside of the airport. At some point later in the night, I got an email saying that the flight had been canceled. I called the support number, and the representative on the other line told me that the flight was still on and that I didn’t need to rebook. The next morning, no one came to the gate to open the door for the crew until almost 11 AM. By this time the flight crew had been waiting for over an hour, and they had called management to get someone to open the door for them multiple times. Around 11:30, the gate screen had changed to a different flight. I ended up buying a last minute ticket with Southwest airline just to get to Chicago, because the next flight with American wasn’t until 7:19 pm that day. Now, earlier that morning my suitcase had been sent ahead of me to ORD. I went to baggage claim to ask them if I could have my suitcase forwarded to where I was staying. The representative at SDF baggage claim said they could and put the claim in for me. As I was going back through TSA, I got an email that the airline had found my suitcase, but the next step was to send it BACK to SDF. I called the airline support number again, and I made it clear that my suitcase needed to stay in Chicago and to not come back to SDF. The representative told me that they would hold my suitcase at ORD and that it wasn’t going to be forwarded anywhere. Once I got there, I found that they had loaded my suitcase onto a plane to send it back to SDF. Thankfully, I had gotten to the baggage claim counter in time for them to put in a request to bring my suitcase back up. My refund with the airline is processing already, but because of this entire experience and miscommunication at every turn of the way, I will not book with American Airlines in the future.

The plane was late and then sat on the runway for almost 45 minutes before taking off.

Crew professional. Easy bag drop off. On time. Good entertainment.

Everything was great. Boarding, early departure, early arrival, and deplaning were smooth. Smooth flight.

Per usual, flight status, staff courtesy and professionalism were excellent

Everything was on time, we arrived early, everything worked well.

The only thing is if Wi-Fi is available after you land and taxi to the gate. It takes forever to get to the gate, and having the Wi-Fi continue would be great to bide the time at least 5 minutes before you arrive at the entrance. That is my only comment; otherwise, everything was good.

Had to wait on pilot and crew to depart and had to wait to arrive at the gate because they only had 2 crews working. Delays, delays....Planes just keep getting smaller and tighter and they nickle and dime for everything. When will an airline actually wake up and make flying more enjoyable?

Seating was horrible. Small seats. Access to flight information and extras very iser unfriendly. Kept losing internet after paying for it. Staff in madison was as unprofessional and unhelpful.

Delayed due to no crew. On a major holiday travel day.

Seats are uncomfortable but price is good. Guess I can put up with misery for four hours.

Cancelled and declined to find alternatives Earlier flight is 2 days later Sent the cancellation notification very late, wish I knew earlier would have stayed to watch the Miami open final game Very disappointing service

They switched my flight to Spirit, Never using Kayak again,

The flight itself was ok and the pilot was very communicative. However, our flight was delayed for almost 3 hours, the gate was changed 3 times and there was no communication as we were waiting. The flight staff was overall a little crabby...I understand as they probably had a long day but we all did.

Asked for a seat change to be w my wife at the gate they were great in sorting it out to make it happen

They cancelled the flight and did nothing. I should be compensated for my uber rides to and from airport. Not a good service by frontier or kayak.

The worst service , the agents from the counter are really bad . Poor customer service . They didnt help me to get in the flight . I was on line when they close the flight without telling and I couldn’t board the plane . I will like to get my money back ey back because it was their fault. Really bad management , bad manners, bad additud

The check in process was a mess for no reason. I spent an hour waiting in line trying to get them to print my boarding pass and as a result I missed my flight.

After waiting several minutes to be acknowledged by 3 employees on their phones, was told we had missed our flight because the doors were closed at that literal moment. Had they given any actual service or help while we were standing there we would have been on with time to spare. More than 10 people were turned away in this fashion claiming there was no way they could let us on the plane, even though it was still sitting connected to the terminal. After the desk agents let us know they didn't care about the situation we were forced to pay more than twice the price of our original tickets as no credits were given for the price of the "missed" flight. And the icing on the cake was after being treated poorly, fleeced for another few hundred dollars for new tickets? We waited on the next plane for 25 minutes passed the "doors closed" time, letting almost an extra dozen passengers on board. You're company has lazy, disinterested employees and your lack of any real help will ensure this was the first and last time we fly Frontier. Awful.

The seats were extremely hard and uncomfortable. It was disappointing even for a budget airline.

Everything you need to know for your flight from Jacksonville to Illinois

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