ORD - SDF

$67 Find Cheap Flights from Chicago O'Hare Airport to Louisville

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from O'Hare Intl to Louisville departing on 1/6. 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 Louisville

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Chicago to Louisville, 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 Chicago to Louisville, as well as popular online travel agencies
Travelers love KAYAK
41,299,237 searches in the past 7 days on KAYAK

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Everything you should know

Cheapest round-trip
$166
Overall average: $263
Multiple Airlines
Sun 1/11Thu 1/15
ORD - SDF • 1 stop
Cheapest non-stop
$171
Typical prices: $255-$313
United Airlines
Thu 1/8Mon 1/12
ORD - SDF • Non-stop
Our travelers' advice
AI-powered summary based on content written by travel experts. AI can make mistakes.
American's Basic Economy is budget-friendly for carry-on.
United's Economy Plus offers six inches more legroom.
Expert advice
Expert advice
Expert advice
Expert advice
Top airlines
United Airlines
Cheapest • from $171 (round-trip)
United Airlines
Best reviews • 7.4 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
When to book
4 weeks
in advance
Our data shows that travelers who book at least 4 weeks in advance save around 63% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
August
Cheapest • 40% price drop
April
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
Start a new search
KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to Louisville!
Flight Deals
Booking Insights
Expert advice
Flight Deals

Cheap Flights from O'Hare Intl to Louisville (ORD-SDF)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from O'Hare Intl to Louisville 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 O'Hare Intl to Louisville

Sun, Jan 11 - Thu, Jan 15
Multiple Airlines Logo
8:00 am - 10:07 am
ORD
-
SDF
25h 07m1 stop
Multiple Airlines Logo
3:36 pm - 11:46 pm
SDF
-
ORD
9h 10m1 stop
$166Multiple Airlines
Thu, Jan 8 - Mon, Jan 12
United Airlines Logo
7:45 am - 10:23 am
ORD
-
SDF
1h 38mnonstop
United Airlines Logo
2:05 pm - 2:49 pm
SDF
-
ORD
1h 44mnonstop
$171United Airlines
Tue, Feb 3 - Thu, Feb 5
Multiple Airlines Logo
12:44 pm - 1:00 pm
ORD
-
SDF
23h 16m1 stop
Multiple Airlines Logo
3:36 pm - 10:36 pm
SDF
-
ORD
8h 00m1 stop
$176Multiple Airlines
Sun, Jan 11 - Wed, Jan 14
Multiple Airlines Logo
8:00 am - 10:07 am
ORD
-
SDF
25h 07m1 stop
Multiple Airlines Logo
1:55 pm - 11:46 pm
SDF
-
ORD
10h 51m2 stops
$181Multiple Airlines
Wed, Jan 7 - Wed, Jan 14
Spirit Airlines Logo
7:30 am - 11:59 pm
ORD
-
SDF
15h 29m1 stop
Spirit Airlines Logo
1:55 pm - 5:52 pm
SDF
-
ORD
28h 57m1 stop
$184Spirit Airlines
Wed, Jan 7 - Mon, Jan 12
Multiple Airlines Logo
3:26 pm - 11:59 pm
ORD
-
SDF
7h 33m1 stop
Multiple Airlines Logo
6:54 pm - 11:22 am
SDF
-
ORD
17h 28m1 stop
$190Multiple Airlines
Tue, Jan 6 - Mon, Jan 12
Delta Logo
7:05 am - 2:42 pm
ORD
-
SDF
6h 37m1 stop
Delta Logo
6:21 pm - 9:05 pm
SDF
-
ORD
3h 44m1 stop
$191Delta
Thu, Jan 8 - Mon, Jan 12
Multiple Airlines Logo
5:15 am - 2:41 pm
ORD
-
SDF
8h 26m1 stop
Multiple Airlines Logo
6:54 pm - 11:22 am
SDF
-
ORD
17h 28m1 stop
$192Multiple Airlines
Tue, Feb 3 - Thu, Feb 5
Multiple Airlines Logo
2:53 pm - 1:00 pm
ORD
-
SDF
21h 07m2 stops
Multiple Airlines Logo
3:36 pm - 10:36 pm
SDF
-
ORD
8h 00m1 stop
$194Multiple Airlines
Wed, Jan 7 - Wed, Jan 14
Multiple Airlines Logo
7:30 am - 11:59 pm
ORD
-
SDF
15h 29m1 stop
Multiple Airlines Logo
1:55 pm - 12:08 pm
SDF
-
ORD
23h 13m2 stops
$195Multiple Airlines
Booking Insights

KAYAK's insights & trends for O'Hare Intl to Louisville flights

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

What’s the cheapest day of the week to fly from Chicago O'Hare Airport to Louisville?

The average price of all round-trip flights from Chicago O'Hare Intl Airport to Louisville clicked on KAYAK for each day over the last 12 months.

Your flight ticket price will generally be cheaper if you fly to Louisville on a Saturday and more expensive on a Monday. On your return trip to Chicago O'Hare Airport, you should consider flying back on a Thursday, and avoid Sundays for better deals.

What is the cheapest month to fly from Chicago O'Hare Intl Airport to Louisville?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Chicago O'Hare Intl Airport to Louisville, 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 Chicago O'Hare Intl Airport to Louisville is August, where tickets cost $186 (return) on average. On the other hand, the most expensive months are March and May, where the average cost of round-trip tickets is $423 and $367 respectively.

How far in advance should I book a flight from Chicago O'Hare Intl Airport to Louisville?

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Chicago O'Hare Intl Airport to Louisville, 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 Chicago O'Hare Intl Airport to Louisville, you should book around 4 weeks before departure, which saves you about 63% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 20 weeks before departure.

Expert advice

Expert advice for your flight from O'Hare Intl to Louisville

 
AI-powered summary based on content written by travel experts. AI can make mistakes.
KAYAK teamed up with top travel experts to share the best tips for your journey.
Airlines
United Airlines

Economy Plus provides extra legroom, up to six inches more than standard economy seats.


Purchase Priority Boarding to ensure overhead bin space, placing you in Zone 2.

American Airlines

Consider Basic Economy for budget travel with carry-on only; compare total costs with Main Cabin.


Main Cabin Extra offers early boarding and complimentary drinks, ideal for short flights.

Our travel experts
Stefanie Waldek

Stefanie Waldek

Expert on United Airlines

Stefanie Waldek

Stefanie Waldek

Stefanie Waldek is a freelance space, travel, and design writer based in Saratoga Springs, NY. Her words have appeared in Space.com, Travel + Leisure, Condé Nast Traveler, Architectural Digest, and House Beautiful, among other publications. An expert in aviation and expedition cruising, Stefanie is frequently up in the air or on the sea, likely en route to Antarctica or the Arctic.

Read more
Harriet Baskas

Harriet Baskas

Expert on American Airlines

Harriet Baskas

Harriet Baskas

Harriet is an award-winning journalist who is happiest in an airport or an unusual museum. Her stories about airports, air travel, and the business of travel have appeared on NBC News, CNBC, USA TODAY, The Points Guy and other outlets. She is the creator of the StuckatTheAirport.com blog and the author of nine books. When not out on the road or exploring the latest airport amenities, she’s home in Seattle getting ready for the next adventure.

Read more

Good to know

Low seasonJanuary
Cheapest flight$67
Best time to beat the crowds with an average 16% drop in price.
Flight from Chicago O'Hare Airport to Louisville

When to book flights from O'Hare Intl to Louisville

Are your dates flexible? Find out the best times to travel from O'Hare Intl to Louisville based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking Chicago O'Hare Airport to Louisville flights

  • What is the cheapest flight from Chicago O'Hare Intl Airport to Louisville?

    In the last 3 days, the lowest price for a flight from Chicago O'Hare Intl Airport to Louisville was $67 for a one-way ticket and $152 for a round-trip.

  • Do I need a passport to fly between Chicago O'Hare Airport and Louisville?

    Even though you are not required to have a passport, keep in mind that an official ID is needed to board the airplane.

  • Which airlines offer Wi-Fi service onboard planes from Chicago O'Hare Airport to Louisville?

    Only American Airlines offers inflight Wi-Fi service on the Chicago O'Hare Airport to Louisville flight route.

  • Which aircraft models fly most regularly from Chicago O'Hare Airport to Louisville?

    The Embraer 175 (Enhanced Winglets) is the aircraft model that flies most regularly on the Chicago O'Hare Airport to Louisville flight route.

  • Which airline alliances offer flights from Chicago O'Hare Airport to Louisville?

    oneworld, and Star Alliance are the airline alliances operating flights between Chicago O'Hare Airport and Louisville, with oneworld being the most commonly used for this route.

  • On which days can I fly direct from Chicago O'Hare Airport to Louisville?

    There are nonstop flights from Chicago O'Hare Airport to Louisville on a daily basis.

  • Which is the best airline for flights from Chicago to Louisville, United Airlines or American Airlines?

    The two airlines most popular with KAYAK users for flights from Chicago to Louisville are United Airlines and American Airlines. With an average price for the route of $289 and an overall rating of 7.4, United Airlines is the most popular choice. American Airlines is also a great choice for the route, with an average price of $304 and an overall rating of 7.2.

  • How does KAYAK find such low prices on flights from Chicago O'Hare Airport to Louisville?

    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 Chicago O'Hare Airport to Louisville.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Louisville from Chicago O'Hare Airport 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 Chicago O'Hare Airport to Louisville?

    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 to Louisville with an airline and back to Chicago O'Hare Airport with another airline. Booking your flights between Chicago O'Hare Airport and SDF can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Chicago O'Hare Airport to Louisville?

    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 to Louisville from Chicago O'Hare Airport up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

KAYAK’s top tips for finding a cheap flight from Chicago O'Hare Intl Airport to Louisville

  • Looking for a cheap flight? 25% of our users found flights on this route for $352 or less one-way and $180 or less round-trip.

Prefer to fly direct from Chicago O'Hare Airport to Louisville?

 
Direct data is based off flight results for the next 60 days. Find direct flights from all airlines flying direct from Chicago O'Hare Intl to Louisville Intl.
Find which airlines fly direct from Chicago O'Hare Intl Airport to Louisville Intl Airport, which days they fly and book direct flights.

Direct departures

Chicago O'Hare Intl to Louisville Intl

Monday

American Airlines, United Airlines

American Airlines, United Airlines

Tuesday

American Airlines, United Airlines

American Airlines, United Airlines

Wednesday

American Airlines, United Airlines

American Airlines, United Airlines

Thursday

American Airlines, United Airlines

American Airlines, United Airlines

Friday

American Airlines, United Airlines

American Airlines, United Airlines

Saturday

American Airlines, United Airlines

American Airlines, United Airlines

Sunday

American Airlines, United Airlines

American Airlines, United Airlines

See more direct flights

Direct returns

Louisville Intl to Chicago O'Hare Intl

Monday

American Airlines, United Airlines

American Airlines, United Airlines

Tuesday

American Airlines, United Airlines

American Airlines, United Airlines

Wednesday

American Airlines, United Airlines

American Airlines, United Airlines

Thursday

American Airlines, United Airlines

American Airlines, United Airlines

Friday

American Airlines, United Airlines

American Airlines, United Airlines

Saturday

American Airlines, United Airlines

American Airlines, United Airlines

Sunday

American Airlines, United Airlines

American Airlines, United Airlines

See more direct flights

Reviews of the top airlines flying from O'Hare Intl to Louisville

 
See real verified KAYAK customer reviews for airlines flying from Chicago to Louisville. 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 O'Hare Intl to Louisville? 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.
7.4
United AirlinesOverall score based on 9094 reviews
7.7Boarding
7.1Entertainment
8.1Crew
7.3Comfort
6.6Food
Airline reviews

After a delay at the gate, C3, at Ohare on Sunday, I left my Blk ski coat on the bench at the gate, lost! Please review my lob claim, thx.

8.0 Excellentt, Dec 2025
ORD - RSW
Read more United Airlines reviews

After a delay at the gate, C3, at Ohare on Sunday, I left my Blk ski coat on the bench at the gate, lost! Please review my lob claim, thx.

Very thoughtful flight attendant offered me water immediately since I had run to make my connection.

Always wish for more healthy, gluten free options. We have to bring our own.

Having a long layover, I was very appreciative of the ability to stand by for an earlier flight. Other airlines like Delta have refused this to me in the past, just to be mean (because my ticket class wasn't high enough). United went out of their way to help me get to my destination early, which I really appreciated given that it was the third leg of a 24+ hour journey for me.

Other than a way way too cold cabinets for the entire flight, all was great

One bag is incorrect and not acceptable for an international flight. The food was not just good. I won't fly with them again.

Excellent flight. Smooth, efficient boarding. Quick flight. Arrived early at STL.

I will never book a flight through Cheap fare. They booked me from Portland Main . And would not give me a refund, so I bought 2 tickets one for 299. From Portland Main to ORD. Then I had to buy a ticket from Oregon PDX to ORD that was another 440. So Just so you know they even told me it was there fault but no refund. Bad bussniess. I did inform United but they said they couldn't help me due to the fact I booked through Cheap Tickets. Never again. And I'm spreding the word. I let everyone know at my 50th class reunion

Crew and customer service were excellent. This flight also had plenty of leg room and seat mounted screens for entertainment. A very pleasant flight all around!

It would have been better if the crew has supported my husband's reasons for needing to keep the space clear around his feet, rather than insisting that he put his knapsack in that space.

We loved the steward on the plane. He made the night enjoyable

The plane was late, when we did board the plane was as cold as a freezer. I was freezing the entire flight, no blankets. Lost miserable flight I’ve ever had.

3 hour weather delay followed by 1 hour (and counting) maintenance delay. UGH!

After we'd boarded , they canceled the flight. The crew didn't even know , we just all received text messages. Then after they deplaned us , AA was just like "too bad, go F your self, we sure ain't gonna help you"

After a two hour delay, my flight was CANCELLED! No pilot available. Such BS.

Amazing food, great staff, with one noticable detail missing ...but no seat entertainment in any of aircraft ...I am not a fan

I wish American Airlines would change the airline industry by loading the plane back to front instead of front to back. Planes would board so much more smoothly and quickly.

I have long legs, my foot was out in the aisle and when a flight attendant came walking by and I didn't notice, instead of saying "excuse me" or anything like that, she kicked my foot. Extremely rude

Everything was fine. Flight boarded and departed on time. Seating was spacious enough for my carryon to fit under the seat in front of me. No complaints at all. Flight even arrived early.

Excellent! The gate agents were kind enough to rebook me on an earlier flight saving me from a 6 hour layover. Even my luggage made it despite the fact that the connection was technically too narrow. The flight itself was very comfortable, roomy, and clean. Plenty of space for my carryon items with plugs to charge my phone. After a long international flight of 14 hours, this was an excellent way to end my travels!

Everything you need to know for your flight from O'Hare Intl to Louisville

Information on your arrival and departure airports