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$71+ Cheap flights from Jacksonville (JAX) to Illinois

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 10/23. Fares are subject to change and may not be available on all flights or dates of travel.
JAX — ORD
Oct 17 — Oct 241
Fri 10/17
Fri 10/24
1 adult, Economy
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Cheap flight deals from Jacksonville to Illinois

Keep the following information in mind while searching for Jacksonville to Illinois flight deals. Data was last updated September 17, 2025.

Round-trip from

$151
(United Airlines)

One-way from

$71
(Kiwi.com)

Popular in

December

Cheapest in

September

Average price

$289

Good round-trip deal

$282 or less

Good one-way deal

$176 or less
From Jacksonville to Illinois
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One-way flight from Jacksonville to Illinois
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Highest demand for flights based on searches. 7% potential increase in price ($28 potential increase over avg. RT price).
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Cheapest flight prices on average. 1% potential price decrease ($6 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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Price to beat on a round-trip flight from Jacksonville to Illinois.
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Price to beat on a one-way flight from Jacksonville to Illinois.
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Find flight deals from Jacksonville to Illinois

Cheapest flights from Jacksonville to Illinois
Explore the most affordable flight options available from Jacksonville to Illinois. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 17, 2025.

This United Airlines deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/2411:54 amJAX - STL
1 stop8h 03mUnited Airlines
Mon 10/276:15 amSTL - JAX
1 stop8h 19mUnited Airlines
Deal found 9/15$151
This American Airlines deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/245:57 pmJAX - STL
1 stop6h 57mAmerican Airlines
Mon 10/274:34 pmSTL - JAX
1 stop5h 04mAmerican Airlines
Deal found 9/14$159
This Delta deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/95:10 amJAX - STL
1 stop3h 55mDelta
Sun 10/126:00 amSTL - JAX
1 stop3h 22mDelta
Deal found 9/15$177
This Kiwi.com deal was found by Cheapflights users on 9/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/2512:38 pmJAX - MDW
1 stop4h 20mFrontier
Mon 9/298:15 amMDW - JAX
1 stop6h 06mFrontier
Deal found 9/16$182
This Frontier deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/1510:38 pmJAX - ORD
2 stops19h 27mFrontier
Mon 11/178:26 amORD - JAX
1 stop12h 27mFrontier
Deal found 9/15$187
This Cheapflightsfares deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/2512:38 pmJAX - MDW
1 stop4h 20mFrontier
Fri 9/268:15 amMDW - JAX
1 stop6h 06mFrontier
Deal found 9/15$189
This Frontier deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/2512:38 pmJAX - MDW
1 stop4h 20mFrontier
Sun 9/286:20 amMDW - JAX
1 stop4h 23mFrontier
Deal found 9/15$192
This Gotogate deal was found by Cheapflights users on 9/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/2412:17 pmJAX - ORD
1 stop6h 58mMultiple Airlines
Thu 10/305:11 amORD - JAX
1 stop10h 02mMultiple Airlines
Deal found 9/17$195
This Frontier deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/3010:38 pmJAX - MDW
2 stops19h 37mFrontier
Sun 11/28:32 amMDW - JAX
1 stop12h 21mFrontier
Deal found 9/15$196
This Frontier deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/212:38 pmJAX - ORD
2 stops11h 42mFrontier
Sun 10/55:10 amORD - JAX
1 stop5h 33mFrontier
Deal found 9/15$199
This Frontier deal was found by Cheapflights users on 9/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/126:05 pmJAX - ORD
1 stop6h 34mFrontier
Thu 10/165:05 amORD - JAX
1 stop11h 03mFrontier
Deal found 9/16$204
This Frontier deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/166:03 pmJAX - ORD
2 stops14h 31mFrontier
Sun 10/195:05 amORD - JAX
1 stop11h 05mFrontier
Deal found 9/15$205

Cheapflights Fare Finder

 
Customize your flight search to find flights from Jacksonville to Illinois that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated September 17, 2025.
Use the filters below to find and compare flights from Jacksonville to Illinois that are best for you.

Fly from

Jacksonville

Fly to

Illinois

Route

Depart

Return

Price

JacksonvilleSt. Louis

JAX - STL

JAXSTL

Jacksonville

Fri 10/24

5:57 pm-11:54 pm

1 stop6h 57m

Lambert-St Louis

Mon 10/27

4:34 pm-10:38 pm

1 stop5h 04m

$159

JacksonvilleSt. Louis

JAX - STL

JAXSTL

Jacksonville

Sat 11/1

1:12 pm-3:55 pm

1 stop3h 43m

Lambert-St Louis

Sat 11/8

10:30 am-2:56 pm

1 stop3h 26m

$177

JacksonvilleSt. Louis

JAX - STL

JAXSTL

Jacksonville

Sat 10/11

8:54 am-2:43 pm

1 stop6h 49m

Lambert-St Louis

Mon 10/13

6:00 am-12:21 pm

1 stop5h 21m

$177

JacksonvilleChicago

JAX - MDW

JAXMDW

Jacksonville

Thu 10/23

6:03 pm-11:46 pm

1 stop6h 43m

Chicago Midway

Mon 10/27

5:28 pm-2:12 pm

2 stops43h 44m

$231

JacksonvilleChicago

JAX - MDW

JAXMDW

Jacksonville

Thu 10/30

10:38 pm-6:39 pm

2 stops21h 01m

Chicago Midway

Sun 11/2

5:20 am-3:13 pm

1 stop8h 53m

$234

JacksonvilleSt. Louis

JAX - STL

JAXSTL

Jacksonville

Thu 10/9

8:15 pm-9:25 pm

Nonstop2h 10m

Lambert-St Louis

Mon 10/13

8:15 pm-11:10 pm

Nonstop1h 55m

$237

JacksonvilleSt. Louis

JAX - STL

JAXSTL

Jacksonville

Thu 10/16

8:15 pm-9:25 pm

Nonstop2h 10m

Lambert-St Louis

Mon 10/20

8:15 pm-11:10 pm

Nonstop1h 55m

$237

JacksonvilleSt. Louis

JAX - STL

JAXSTL

Jacksonville

Thu 10/9

5:10 am-8:05 am

1 stop3h 55m

Lambert-St Louis

Mon 10/13

6:52 pm-11:59 pm

1 stop4h 07m

$247

JacksonvilleSt. Louis

JAX - STL

JAXSTL

Jacksonville

Sat 10/11

3:25 pm-9:00 pm

1 stop6h 35m

Lambert-St Louis

Mon 10/13

8:15 pm-11:10 pm

Nonstop1h 55m

$247

JacksonvilleSt. Louis

JAX - STL

JAXSTL

Jacksonville

Thu 10/16

5:10 am-8:05 am

1 stop3h 55m

Lambert-St Louis

Mon 10/20

6:00 am-10:22 am

1 stop3h 22m

$247

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/16

Showing 1-10 of 60 results
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Best time to book a flight from Jacksonville to Illinois

Have a flexible travel schedule? Discover the best time to fly to Illinois from Jacksonville with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

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

What is the cheapest month to book a flight from Jacksonville to Illinois?

Currently, August is the cheapest month in which you can book a flight from Jacksonville to Illinois (average of $245). Flying from Jacksonville to Illinois in March is currently the most expensive (average of $321). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from JAX to IL?

Find hourly flight availability from Jacksonville to Illinois. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated September 17, 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Jacksonville to Illinois as you normally would.

Weekly flight availability from Jacksonville to Illinois

Explore weekly flight availability from Jacksonville to Illinois. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated September 17, 2025.

The most flights from JAX to USIL are scheduled on a Monday (23 on average). You will have fewer flight options on Friday, which is when the least amount of flights are scheduled (11 on average).

Reviews of airlines servicing Illinois

Get insights into the airlines that provide service to Illinois. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Illinois. Reviews last updated September 17, 2025.
See what other customers who have flown with Southwest, Delta, and United Airlines from Jacksonville to Illinois have to say. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.0
Very good
4,242 reviews

Entertainment

7.5

Comfort

8.0

Overall

8.0

Crew

8.6

Boarding

8.1

Food

7.0

Reviews

1 / 20
2.0
Mediocre

Anonymous,Feb 2025

MCO - STL

Cancelled at last minute, SWA unable to assist in formulating alternate plans. Wound up renting a car and driving 13 hours to beat bad weather forecast at home. Not SWA’s fault that there was significant bad weather across the country.
Southwest
8.0
Very good
4,242 reviews
Southwest
8.0
Very good
4,242 reviews

Entertainment

7.5

Comfort

8.0

Overall

8.0

Crew

8.6

Boarding

8.1

Food

7.0

Reviews

1 / 20
2.0
Mediocre

Anonymous,Feb 2025

MCO - STL

Cancelled at last minute, SWA unable to assist in formulating alternate plans. Wound up renting a car and driving 13 hours to beat bad weather forecast at home. Not SWA’s fault that there was significant bad weather across the country.
Delta
8.0
Very good
7,961 reviews
Southwest
8.0
Very good
4,242 reviews

Entertainment

7.5

Comfort

8.0

Overall

8.0

Crew

8.6

Boarding

8.1

Food

7.0

Reviews

1 / 20
2.0
Mediocre

Anonymous,Feb 2025

MCO - STL

Cancelled at last minute, SWA unable to assist in formulating alternate plans. Wound up renting a car and driving 13 hours to beat bad weather forecast at home. Not SWA’s fault that there was significant bad weather across the country.
United Airlines
7.4
Good
8,926 reviews
Southwest
8.0
Very good
4,242 reviews

Entertainment

7.5

Comfort

8.0

Overall

8.0

Crew

8.6

Boarding

8.1

Food

7.0

Reviews

1 / 20
2.0
Mediocre

Anonymous,Feb 2025

MCO - STL

Cancelled at last minute, SWA unable to assist in formulating alternate plans. Wound up renting a car and driving 13 hours to beat bad weather forecast at home. Not SWA’s fault that there was significant bad weather across the country.
American Airlines
7.2
Good
10,000 reviews
Southwest
8.0
Very good
4,242 reviews

Entertainment

7.5

Comfort

8.0

Overall

8.0

Crew

8.6

Boarding

8.1

Food

7.0

Reviews

1 / 20
2.0
Mediocre

Anonymous,Feb 2025

MCO - STL

Cancelled at last minute, SWA unable to assist in formulating alternate plans. Wound up renting a car and driving 13 hours to beat bad weather forecast at home. Not SWA’s fault that there was significant bad weather across the country.
Frontier
5.8
Fair
3,173 reviews
Southwest
8.0
Very good
4,242 reviews

Entertainment

7.5

Comfort

8.0

Overall

8.0

Crew

8.6

Boarding

8.1

Food

7.0

Reviews

1 / 20
2.0
Mediocre

Anonymous,Feb 2025

MCO - STL

Cancelled at last minute, SWA unable to assist in formulating alternate plans. Wound up renting a car and driving 13 hours to beat bad weather forecast at home. Not SWA’s fault that there was significant bad weather across the country.

Related info for your journey

Find useful and relevant information for your journey from Jacksonville to Illinois. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly from for flights from Jacksonville to Illinois?

    Most people fly from Jacksonville (JAX) if they book a flight from Jacksonville to Illinois. Jacksonville is conveniently located just 11.2 mi from Jacksonville’s city center.

  • How long is the flight from Jacksonville to Illinois?

    Airlines like American Airlines, Delta, and Frontier fly from Jacksonville to Illinois in about 3h 43m. The time it takes to get you to your destination can typically vary by up to 17h 18m. The distance from Jacksonville to Illinois is about 753 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

  • What are the cheapest airlines to fly from Jacksonville to Illinois one-way?

    To fly one-way, consider booking your trip with Frontier, which is currently one of the cheapest options available, starting at $71. United Airlines flights start at $71 while deals on JetBlue start at $114 one-way.

  • What are the most popular routes from Jacksonville to Illinois?

    The most popular flight routes from Jacksonville to Illinois are Jacksonville - Chicago O'Hare Intl, Jacksonville - Chicago Midway and Jacksonville - Lambert-St Louis.

  • What are the most reliable airlines from Jacksonville to Illinois?

    Before booking your flight to Illinois from Jacksonville, check out the most reliable airlines to get you to your destination on time: Envoy Air (100%), Republic Airways (100%), ANA( 83%).

  • What are the cheapest flights from Jacksonville to Illinois?

    Looking for the cheapest flight from Jacksonville to Illinois? While on average our users pay $1,088, our data indicates the cheapest price to be $128. The most popular route (Jacksonville - Chicago O'Hare Intl), is priced around $224.

  • Can I find deals for flights from Jacksonville to Illinois that include hotel bookings?

    Yes. In addition to deals on Jacksonville to Illinois flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Jacksonville to Illinois?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Jacksonville to Illinois.

  • Can I find deals for business class flights from Jacksonville to Illinois?

    Yes. Cheapflights offers flight deals from Jacksonville to Illinois by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Jacksonville to Illinois?

    Currently, August is the cheapest month in which you can book a flight from Jacksonville to Illinois (average of $245). Flying from Jacksonville to Illinois in March is currently the most expensive (average of $321). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

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Alternative routes for Jacksonville to Illinois

See prices for flight routes from nearby airports that may be better suited for you.
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Top 5 airlines flying from Jacksonville to Illinois

Discover the top 5 airlines that operate flights from Jacksonville to Illinois. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated September 17, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$128Average$381FlexibilityNo cancel feeOn-timeN/A
FrontierCheapest$145Average$252FlexibilityNo cancel feeOn-time62%
American AirlinesCheapest$179Average$350FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$207Average$397FlexibilityNo cancel feeOn-time63%
United AirlinesCheapest$223Average$426FlexibilityNo cancel feeOn-time69%

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