ORD - SDF

$121 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 4/22. 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
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Everything you should know

Cheapest round-trip
$241
Overall average: $349
United Airlines
Tue 4/7Tue 4/14
ORD - SDF • Non-stop
Cheapest one-way
$121
Typical prices: $144-$296
United Airlines
Wed 4/22
ORD - SDF • Non-stop
Advice from real travelers
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
Cheapest • from $241 (round-trip)
Best reviews • 7.4 score
Airline reviews
Airline reviews
+1
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Airline reviews
Airline reviews
+1
Nonstop flights
You can fly direct with American Airlines and United Airlines. Average duration is 1h 31m
Direct flights
Direct flights
+1
+1
Direct flights
Direct flights
+1
When to book
in advance
Our data shows that travelers who book at least 4 weeks in advance save around 62% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
Cheapest • 43% price drop
Most popular
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KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to Louisville!
Flight Deals
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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

Tue, Apr 7 - Tue, Apr 14
United Airlines Logo
7:54 pm - 10:30 pm
ORD
-
SDF
1h 36mnonstop
United Airlines Logo
9:07 am - 9:47 am
SDF
-
ORD
1h 40mnonstop
$241United Airlines
Thu, Apr 2 - Mon, Apr 13
Multiple Airlines Logo
5:05 am - 2:33 pm
ORD
-
SDF
8h 28m
1 stop
Multiple Airlines Logo
7:48 pm - 5:00 pm
SDF
-
ORD
22h 12m
2 stops
$249Multiple Airlines
Tue, Apr 7 - Tue, Apr 14
American Airlines Logo
8:05 am - 10:46 am
ORD
-
SDF
1h 41mnonstop
American Airlines Logo
7:31 am - 12:38 pm
SDF
-
ORD
6h 07m
1 stop
$251American Airlines
Wed, Apr 8 - Thu, Apr 9
American Airlines Logo
1:34 pm - 4:05 pm
ORD
-
SDF
1h 31mnonstop
American Airlines Logo
7:01 pm - 7:49 pm
SDF
-
ORD
1h 48mnonstop
$254American Airlines
Tue, Apr 21 - Sat, Apr 25
United Airlines Logo
2:10 pm - 4:41 pm
ORD
-
SDF
1h 31mnonstop
United Airlines Logo
9:07 am - 9:47 am
SDF
-
ORD
1h 40mnonstop
$256United Airlines
Wed, Apr 29 - Wed, Apr 29
American Airlines Logo
8:05 am - 10:46 am
ORD
-
SDF
1h 41mnonstop
American Airlines Logo
7:01 pm - 7:49 pm
SDF
-
ORD
1h 48mnonstop
$258American Airlines
Sat, Apr 18 - Mon, Apr 20
American Airlines Logo
6:57 pm - 9:30 pm
ORD
-
SDF
1h 33mnonstop
American Airlines Logo
7:01 pm - 7:49 pm
SDF
-
ORD
1h 48mnonstop
$259American Airlines
Tue, Apr 7 - Tue, Apr 14
American Airlines Logo
4:17 pm - 11:30 pm
ORD
-
SDF
6h 13m
1 stop
American Airlines Logo
8:03 am - 12:36 pm
SDF
-
ORD
5h 33m
1 stop
$261American Airlines
Wed, Apr 8 - Thu, Apr 9
American Airlines Logo
9:16 pm - 11:48 pm
ORD
-
SDF
1h 32mnonstop
American Airlines Logo
7:31 am - 12:18 pm
SDF
-
ORD
5h 47m
1 stop
$264American Airlines
Thu, Apr 2 - Mon, Apr 13
United Airlines Logo
2:10 pm - 4:41 pm
ORD
-
SDF
1h 31mnonstop
United Airlines Logo
7:20 am - 8:00 am
SDF
-
ORD
1h 40mnonstop
$267United 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 Sunday. 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 February and March, where the average cost of round-trip tickets is $508 and $385 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 62% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 17 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.
Our travel experts
Harriet Baskas

Harriet Baskas

Expert on American Airlines

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.

Stefanie Waldek

Stefanie Waldek

Expert on United Airlines

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.

Good to know

Low seasonSeptember
Cheapest flight$121
Best time to beat the crowds but there is an average 8% increase in price.
Most popular time to fly with an average 55% increase 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 $121 for a one-way ticket and $241 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 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?

    Star Alliance, and oneworld are the airline alliances operating flights between Chicago O'Hare Airport and Louisville, with Star Alliance 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 $299 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 $320 and an overall rating of 7.1.

  • 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 $147 or less one-way and $256 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 9427 reviews
7.3Comfort
7.7Boarding
6.6Food
8.1Crew
7.1Entertainment
Airline reviews

This trip did not start off well. The inbound flight was delayed about 20 minutes. Then, after initial onboarding, the passengers had to deplane due to a mechanical problem. That took about 30 minutes to fix and be cleared. Then, reboarding was chaotic. It took a long time to sort passengers and two passengers on standby were ticketed but there was no seat. So, they had to deplane. One of the flight crew was trying to help passengers figure out a place to put their carry-on bags and that took more time. In the end, our scheduled 10:30 am departure did not actually take off until about 12:05 pm CST. The flight itself was long but we got to Houston. Some passengers missed their connecting flights and had to rebook. Not the best of flights I've had.

4.0 OkayDr. Joseph, Feb 2026
ORD - IAH
Read more United Airlines reviews

This trip did not start off well. The inbound flight was delayed about 20 minutes. Then, after initial onboarding, the passengers had to deplane due to a mechanical problem. That took about 30 minutes to fix and be cleared. Then, reboarding was chaotic. It took a long time to sort passengers and two passengers on standby were ticketed but there was no seat. So, they had to deplane. One of the flight crew was trying to help passengers figure out a place to put their carry-on bags and that took more time. In the end, our scheduled 10:30 am departure did not actually take off until about 12:05 pm CST. The flight itself was long but we got to Houston. Some passengers missed their connecting flights and had to rebook. Not the best of flights I've had.

We were delayed for about an hour from taking off due to traffic control procedures at the destination airport. But once in the air, the flight went well. The crew members were great and provided cabin service despite moderate turbulence during much of the flight.

Short flight, but no drink/snack service. The flights both going and coming were delayed.

Not being stranded in Chicago for her airport to 11:30 tomorrow morning the 3rd

I was fully checked in the prior night and i was unchecked and then didn’t have a seat when I boarded. Instead of an aisle seat, I was out in the middle seat of the very last row of the plane.

In overall it was a good experience, the only down point was that the entertainment screen was working properly.

They lost my luggage, so, not happy. The crew was nice but my suitcases never made it, still trying to find out what happened!

I understand weather is an issue, but making us chase our plane down at five scheduled gates across three terminals in an airport the size of O'Hare was unfair. They'd have probably been better off to leave gates as TBD until the inbound plane is in final approach instead of running us all over the place. Also, props to the consistently-unprepared ground crew in Richmond for once again leaving my lane parked short of the gate because they couldn't have a crew in place on time with 2 hours notice...

cabin crew was OK, food was OK, the trip from the US to Munich was actually pretty bad comfort wise. Noisy aircraft, lights never dimmed even in Business class (night flight) barely sufficient amenities for the price. I have millions of miles with United but TBH American is gaining ground and Delta has always been marginally better then United although on paper United has more longes and cheaper upgrades.

Essy to get on. The hostess gave very little pop, the plane was late getting in, and we are still waiting for our bags. This sucks. :/

The gate got changed several times and the flight was delayed over an hour. Awful experience

American continues to decline in their customer service and its beyond disappointing.

It was an older plane. First Class was not especially roomy or comfortable. It was a short flight so there were no meal but they did offer mixed nuts which used to be normal but now is rare. Crew member was very polite and professional.

Flight to Tampa was delayed taking off due to plane arriving late but no other issues

As previously stated the delay I experienced flying from Wichita to Chicago caused a host of issues. When I finally was able to be booked on the last remaining American flight from Chicago to Cincinnati, the gate changed four times with the last change occurring very near the scheduled boarding time. While I didn't have a problem moving from gate to gate, I did notice and make note of others that had mobility issues and had to move each time for the gate change.

Maintenance took a very long time and then we were in a holding pattern. While a one-off maintenance issue is standard, there were delays on both of my flights for this trip based on maintenance issues with the planes, which delayed both flights over 45 minutes. Thankfully, I didn't have any connections but it wasn't an experience that would make me pick AA if I have other options.

No Snacks or Entertainment. The flight was short, snacks should still be given.

See prior comment about how Kayak mishandled my reservation and delayed my arrival by 6 hours.

Boarding delayed 20 minutes for no reason, no wifi, in flight entertainment, or snacks / waters?

Delayed an hour due to operational issues. Minimal apologies or care for the significant inconvenience caused. Landed at nearly 1am and they still couldn’t find ground staff to get us off the plane promptly.

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

Information on your arrival and departure airports