$49 Find Cheap Flights from Louisville 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 Louisville to Illinois departing on 4/14. 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.
1 adult
1 adult, Economy, 0 bags

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 Louisville 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 Louisville to Illinois, as well as popular online travel agencies
Travelers love KAYAK
41,299,237 searches in the past 7 days on KAYAK

Save 23% or moreCompare multiple travel sites with one search.

Track pricesNot ready to book? Create a price alert for when prices drop.

Bundle and saveSave money when you bundle your flight + hotel.

Filter your dealsChoose cabin class, free Wi-Fi and more.

Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Louisville to Illinois

Cheapest round-trip prices found by our users on KAYAK in the last 72 hours
Chicago
Chicagononstop$97
Moline
Moline1 stop$329
St. Louis
St. Louis1 stop$249
Chicago
Chicagononstop$97
Moline
Moline1 stop$329
St. Louis
St. Louis1 stop$249

Book Cheap Louisville to Illinois Plane Tickets

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Louisville 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.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Louisville to Illinois

Wed, Apr 1 - Wed, Apr 8
American Airlines Logo
12:07 pm - 12:41 pm
SDF
-
ORD
1h 34mnonstop
American Airlines Logo
1:34 pm - 4:05 pm
ORD
-
SDF
1h 31mnonstop
$97American Airlines
Wed, Apr 1 - Wed, Apr 1
Southwest Logo
11:50 am - 12:05 pm
SDF
-
MDW
1h 15mnonstop
Southwest Logo
6:15 pm - 8:30 pm
MDW
-
SDF
1h 15mnonstop
$97Southwest
Wed, Apr 1 - Wed, Apr 8
Southwest Logo
7:05 pm - 7:25 pm
SDF
-
MDW
1h 20mnonstop
Southwest Logo
8:00 am - 2:45 pm
MDW
-
SDF
5h 45m
1 stop
$107Southwest
Wed, Apr 1 - Wed, Apr 8
Southwest Logo
11:50 am - 12:05 pm
SDF
-
MDW
1h 15mnonstop
Southwest Logo
9:40 am - 6:00 pm
MDW
-
SDF
7h 20m
2 stops
$112Southwest
Wed, Apr 1 - Wed, Apr 1
United Airlines Logo
7:20 am - 8:00 am
SDF
-
ORD
1h 40mnonstop
United Airlines Logo
5:45 pm - 8:16 pm
ORD
-
SDF
1h 31mnonstop
$117United Airlines
Wed, Apr 15 - Tue, Apr 21
Southwest Logo
7:00 am - 12:50 pm
SDF
-
ORD
6h 50m
1 stop
Southwest Logo
2:40 pm - 9:05 pm
ORD
-
SDF
5h 25m
1 stop
$122Southwest
Mon, Apr 6 - Wed, Apr 8
United Airlines Logo
5:00 am - 5:40 am
SDF
-
ORD
1h 40mnonstop
United Airlines Logo
9:30 pm - 11:59 pm
ORD
-
SDF
1h 29mnonstop
$127United Airlines
Wed, Apr 1 - Wed, Apr 8
Delta Logo
6:00 am - 9:59 am
SDF
-
ORD
4h 59m
1 stop
Delta Logo
3:59 pm - 11:09 pm
ORD
-
SDF
6h 10m
1 stop
$157Delta
Wed, Apr 1 - Wed, Apr 8
Delta Logo
6:00 am - 9:59 am
SDF
-
ORD
4h 59m
1 stop
Delta Logo
9:50 am - 6:49 pm
ORD
-
SDF
7h 59m
2 stops
$162Delta
Tue, Mar 24 - Tue, Mar 31
American Airlines Logo
5:00 am - 9:40 am
SDF
-
STL
5h 40m
1 stop
American Airlines Logo
8:00 am - 5:18 pm
STL
-
SDF
8h 18m
1 stop
$249American Airlines
Booking Insights

KAYAK's insights & trends for Louisville to Illinois flights

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

What is the cheapest Louisville to Illinois flight route?

Data is based on round-trip flight searches on KAYAK over the past month.

The cheapest ticket to Illinois from Louisville found in the last 72 hours was to Chicago, at $228 round-trip. The most popular route is from Louisville (SDF) to Chicago O'Hare Intl Airport (ORD), and the cheapest round-trip airline ticket found on this route in the last 72 hours was $237.

Can I save money by flying with a layover from Louisville 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 $286, prices are generally cheapest when you fly direct.

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Louisville 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 Louisville to Illinois is November, when tickets cost $196 (return) on average. On the other hand, the most expensive months are January and February, when the average cost of round-trip tickets is $431 and $347 respectively.

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

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

Your flight ticket price will generally be cheaper if you fly to Illinois on a Thursday and more expensive on a Sunday. On your return trip to Louisville, you should consider flying back on a Saturday, and avoid Mondays for better deals.

How far in advance should I book a flight from Louisville 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 Louisville 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 Louisville to Illinois, you should book around 4 weeks before departure, which saves you about 65% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 19 weeks before departure.

Good to know

Low seasonJanuary
Cheapest flight$49
Best time to beat the crowds but there is an average 30% increase in price.
Most popular time to fly and prices are also 24% lower on average.
Flight from Louisville to Chicago O'Hare Airport

FAQs - booking Illinois flights

  • How does KAYAK find such low prices on flights from Louisville 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 Louisville to Illinois.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from Louisville 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 Louisville 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 Louisville 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 Louisville 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 Louisville 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 in the morning, when round-trip flights cost $490 on average. Morning departures are around 39% 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 $891.

Top tips for finding cheap flights to Illinois

  • Looking for a cheap flight? 25% of our users found tickets from Louisville to the following destinations at these prices or less: Chicago $200 one-way - $366 round-trip; Chicago $181 one-way - $398 round-trip

Reviews of the top 3 airlines serving from Louisville to Illinois

 
See real verified KAYAK customer reviews for airlines flying from Louisville 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 Louisville 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 4315 reviews
7.5Entertainment
8.6Crew
8.1Boarding
7.0Food
8.0Comfort
Airline reviews

Good but I prefer choose your own seat. With the new assigned seats they should board from the back I see no advantage to this new boarding. Just like every other airline

10.0 ExcellentMarty, Mar 2026
SJC - LGB
Read more Southwest reviews

Good but I prefer choose your own seat. With the new assigned seats they should board from the back I see no advantage to this new boarding. Just like every other airline

I realize they are still working out kinks with the new boarding process, but by the time I boarded in group 5, most of the bins were full. All airlines should better enforce small bags and jackets going under the seats until everyone has boarded.

WiFi was not working and didn’t have a beverage service

Snacks are always pretzels. Why can't you also offer peanuts ?

Flight boarded late after announcing on time boarding. Flight arrived only a little late despite late departure. Had trouble connecting to WiFi

Mediocre. Boarding is now unpleasant. The employees, once friendly and nice, are now regularly speaking sternly to passengers, badgering them to do things right so they can take off on time and gate check bags because they don't have enough overhead bin space. The pretzel snack was crushed flat and broken into even smaller pieces, which happens frequently lately. Drink service was suspended before they reached my row.

The last 3 flights between BWI and BDL canceled the beverage service mid- way. Just say up front that the fight is too short. Thanks!

It was canceled. Supposedly weather. But there was no snow in Baltimore. At least we found out before driving to airport

I have not flown Southwest in awhile and had a very pleasant experience. From ticketing to boarding to the flight. The flight left on time and landed ahead of schedule. It won't be so long next time!!

The Southwest experience has definitely taken a dive from its early days. You can no longer deferentiate from other airlines. Air travel is too expensive. Southwest is no longer budget friendly. They have lost me as a loyal customer.

Wonderful. Quick boarding. Early departure and we arrived 30 minutes early at our destination. Unfortunately, when you arrive early, there is still a departing aircraft at our gate. We had to park for 30 minutes until the gate was clear. So our early arrival was not really early at the gate. Otherwise it was a quick and smooth flight. Appreciated the efficiency.

Crew was great (professional, attentive, prompt). Snacks for 4 hrs flight is deplorable.

United Airlines is my preferred airlines and I am thankful for Gary who also help support me on the phone to switch my flight literally last min.

Seated dude next to me even though lots of empty rows. But main thing was we sat on the tarmac after landing for 30 minutes because of, in the words of the dude who sat next to me, “operational incompetence”. We got changing directions about where to pick up gate checked bags. Pilot and flight attendant were awesome though.

It was a pretty standard flight... until the almost hour and a half spent on the taxi way. I get that the weather has been poor but the delay had nothing to do with the weather and more to do with a plane with several issues tying up the gate. I get that that happens from time to time but this has been EVERY flight I've been on for the past 5 years and I fly 3 to 5 times a year. This isn't just United... it's American, it's Delta. It's an issue with the entire industry. I work for UPS and packages on a cargo plane get better service than people do these days. Anymore I HATE flying.

Perfect flight. Smooth flight. Arrived 20 minutes early at destination. Excellent service.

The flights were on time which was great give. It was holiday travel season and there’d been some weather issues. The only complaint and this is every time with United is the terrible seat design. The head rest is not built for comfort and having my neck bent forward for a cross country trip reminded me while I try not to take United flights as a rule.

Everything was absolutely wonderful from check in to baggage claim. Staff was very professional and sweet. Will definitely recommend United to family and friends.

They did the one thing that really matters - got to Chicago early.

The flight was on time. I generally don’t drink or eat on short flights and the seats were good and the flight attendants were friendly. That’s all I expect

The chicken wrap was tiny ($13 for what looked like a 1/3 of a normal wrap?) and disgusting.

It was good experience this time. The flight was on time.

There was a delay with the plan which cause the flight to leave later and once arrived in Chicago there was another delay and some passengers missed their connecting flights

The gate agent had a really bad attitude and refused to help me get on the standby list. She just handed me a card and said I needed to call a number. I asked her to help with the AA app on my phone and she just shrugged and said she didnt know. After a few phone calls, I eventually just went to a different gate agent on the other side of the terminal and got the help I needed.

Overall, my last three trips on American Airlines have all been either delayed or "rescheduled" due to mechanical issues. At least on delay caused me to miss two possible connecting flights each later than the first. My last option for my last connection required the assistance of the onsite service desk (O'Hare Airport). The wait time for the service desk was such that it jeopardized getting booked on the last connecting flight available for the night. Suffice it to say, my latest experiences with American Airlines have caused me extensive loss of productive business and personal time and can therefore be classified as significantly less than satisfactory.

Waiting for gate in RDU for more than 20mins is crazy.

American Airlines was great and worked very hard to change my ticket so I could get an earlier, direct flight back to Dallas. However, I was informed that Kayak made mistakes with my itinerary and classified my ticket as desiring to be on the earlier flight instead of taking the necessary step of calling AA to get me on the standby list. This ended up keeping me from being added to the standby list and delayed me getting home by 6 hours. I am happy to discuss this further with Kayak so they can correct their procedures so this won't happen again.

Waited for oxygen tanks for 30 minutes after boarding was complete.

We flew in first class. The crew did not offer drinks before the flight took off, but they treated us well during the flight. The food was excellent. There was actually too much food served, but it was nice to have all the options.

Update to handle the delay was very bad, crews no smiles or welcome or thanks. Don’t care attitude

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

Information on your arrival and departure airports