$89 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 3/25. 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
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Cheap Flights from Louisville to Illinois

Cheapest round-trip prices found by our users on KAYAK in the last 72 hours
Chicago
Chicagononstop$177
Moline
Moline1 stop$259
St. Louis
St. Louis1 stop$293
Chicago
Chicagononstop$177
Moline
Moline1 stop$259
St. Louis
St. Louis1 stop$293

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

Tue, Mar 10 - Tue, Mar 17
United Airlines Logo
1:58 pm - 2:45 pm
SDF
-
ORD
1h 47mnonstop
United Airlines Logo
7:40 pm - 10:13 pm
ORD
-
SDF
1h 33mnonstop
$177United Airlines
Wed, Mar 25 - Sat, Mar 28
American Airlines Logo
6:12 pm - 7:00 pm
SDF
-
ORD
1h 48mnonstop
American Airlines Logo
8:30 am - 11:00 am
ORD
-
SDF
1h 30mnonstop
$184American Airlines
Wed, Mar 25 - Sat, Mar 28
Southwest Logo
7:05 pm - 7:25 pm
SDF
-
MDW
1h 20mnonstop
Southwest Logo
7:15 pm - 9:30 pm
MDW
-
SDF
1h 15mnonstop
$184Southwest
Tue, Feb 17 - Wed, Feb 25
Southwest Logo
4:15 pm - 9:25 pm
SDF
-
MDW
6h 10m
1 stop
Southwest Logo
10:00 am - 12:15 pm
MDW
-
SDF
1h 15mnonstop
$187Southwest
Sat, Feb 14 - Wed, Feb 18
American Airlines Logo
7:09 am - 7:43 am
SDF
-
ORD
1h 34mnonstop
American Airlines Logo
9:05 am - 11:30 am
ORD
-
SDF
1h 25mnonstop
$196American Airlines
Tue, Feb 17 - Wed, Feb 25
Southwest Logo
7:20 pm - 7:35 pm
SDF
-
MDW
1h 15mnonstop
Southwest Logo
10:00 am - 12:15 pm
MDW
-
SDF
1h 15mnonstop
$196Southwest
Tue, Mar 10 - Tue, Mar 17
Delta Logo
12:34 pm - 6:00 pm
SDF
-
ORD
6h 26m
1 stop
Delta Logo
11:10 am - 4:30 pm
ORD
-
SDF
4h 20m
1 stop
$197Delta
Tue, Mar 10 - Tue, Mar 17
Delta Logo
5:35 pm - 10:31 pm
SDF
-
MDW
5h 56m
1 stop
Delta Logo
6:00 am - 11:58 am
MDW
-
SDF
4h 58m
1 stop
$197Delta
Tue, Feb 17 - Wed, Feb 25
Southwest Logo
4:15 pm - 9:25 pm
SDF
-
MDW
6h 10m
1 stop
Southwest Logo
8:10 am - 4:50 pm
MDW
-
SDF
7h 40m
2 stops
$202Southwest
Sat, Feb 14 - Wed, Feb 18
United Airlines Logo
5:54 pm - 9:27 pm
SDF
-
MLI
4h 33m
1 stop
United Airlines Logo
3:52 pm - 10:13 pm
MLI
-
SDF
5h 21m
1 stop
$309United 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 $243 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 $266.

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 $296, 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 March and July, when the average cost of round-trip tickets is $295 and $287 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 Sundays 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 67% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 19 weeks before departure.

Good to know

Low seasonFebruary
Cheapest flight$89
Best time to beat the crowds but there is an average 7% increase in price.
Most popular time to fly and prices are also 4% 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 $502 on average. Morning departures are around 38% 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 $865.

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 $225 one-way - $370 round-trip; Chicago $226 one-way - $418 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 4267 reviews
7.5Entertainment
8.1Boarding
8.0Comfort
7.0Food
8.6Crew
Airline reviews

Great flight but super high price. Glad it was a business trip and not personal

10.0 ExcellentPieter, Jan 2026
LGB - DAL
Read more Southwest reviews

Great flight but super high price. Glad it was a business trip and not personal

On time. Friendly staff. Took to long to pre bord all the specialty groups. Cramped small plane

The seats were comfortable, and the boarding process was pretty smooth.

3 hour delay. Had to change plans and was still delayed.

The staff was very friendly, professional, and courteous. The overall flight was a great experience.

The crew canceled the complementary snack and drink in anticipation of turbulence that never materialized. I was counting on the drink (water) to take the the doses of medication - prescribed for my heart condition - that were due during the flight. Since no snack or meal was served on this flight, I cannot rate the food quality. Otherwise, this flight was excellent.

Departure was delayed more than 1/2 hour while we waited for luggage (only) transfer from another flight/plane. Once approved for takeoff, the flight was excellent.

We got exit row seats both flights. Everything was running on time

The flight crew was extremely rude and especially not helpful when our flight was delayed.

Pretty seamless, just a tad bit late in taking off and landing.

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

It was nice to have gotten up upgraded to first class with a meal on a three hour flight

Very bad! They kept delaying my flight and wouldn’t do anything about it

Door to door, the crew and staff were amazing. It was a stressful travel day with delays, but they were focused on customers and doing what they could to get us to our destinations.

Flight was delayed only slightly before takeoff due to traffic control. However, the flight arrived early to ORD. Good flight. United has been very reliable for me.

Another delayed flight. When the delays exceed the duration of the flight, it’s a problem.

Little warm on the plane and delayed for an hour

So excited very proud first of all I wanna thank kayak all updates very professional and fast alart And amazing cabin crew so nice to me they deserve big salute

The boarding process needs to be fixed. The zone don't work, especially when there is hardly anyone in zones 3, 4,and 5, leaving the majority of the passengers backed up in the aisle, especially because passengers seated near the front are blocking passengers who are seated in the rear of the plane. It would also help if the size of carry on bags was more strictly enforced.

Awful. They won’t help me with anything. I booked on American but they abdicated to Iberia. The ticket was overpriced. Everything negative

I enjoyed the extra leg room compared to other airlines. The first stewards made my daughter’s birthday special by giving her an extra snack. Then the last one coming home from Chicago to Appleton made our night really enjoyable Thanks for making our trip enjoyable

It was good..clean, comfy seat. Friendly warm welcoming crew. Was able to check my cabin luggage at the gate which I was able to pickup in a decent time from baggage claim. The app gave all updates from delays to baggage claim info. Overall smooth flight.

It was a typical flight. We had a delay which seems to be the normality now. And we had no in flight service due to conditions.

After we landed we sat on the tarmac for 1.5 hours waiting to get to our gate. Ridiculous.

Terrible. Flight delayed for more than 8 hours with only a $12 meal voucher provided for the inconvenience. The airplane did not have breaks on arrival yet they still made us go through the motions and board on time knowing we could not take off then sit for 40+ minutes before having to get of the time. A complete waste of my time. I cannot believe they can stay business with these shenanigans. I’ll avoid this company like the plague moving forward as the lack of accountability is disgraceful.

This was the best 2 flights I have had with American out of SGF. Great crew both flights.

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

Information on your arrival and departure airports