HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
O'Hare Intl

$51+ Cheap flights from Louisville (SDF) to O'Hare Intl (ORD)

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 11/19. Fares are subject to change and may not be available on all flights or dates of travel.
SDF — ORD
Oct 11 — Oct 181
Sat 10/11
Sat 10/18
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Louisville to O'Hare Intl with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheapflights Tip: The best prices from Louisville Intl to Chicago O'Hare Intl are usually found in August or October, booked 52 days in advance, depart on a Thursday or Friday and return on a Saturday

Cheap flight deals from Louisville to O'Hare Intl

Discover tips and strategies to find the most affordable flight options for your journey from Louisville (SDF) to O'Hare Intl (ORD). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated September 11, 2025.

Round-trip from

$101
(United Airlines)

One-way from

$51
(United Airlines)

Popular in

March

Cheapest in

August

Average price

$303

Good round-trip deal

$325 or less

Good one-way deal

$180 or less
From Louisville Intl to Chicago O'Hare Intl
Search Deals
One-way flight from Louisville Intl to Chicago O'Hare Intl
Search Deals
Highest demand for flights based on searches. 8% potential increase in price ($26 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($9 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in September 2025
Search Deals
Price to beat on a round-trip flight from Louisville Intl to Chicago O'Hare Intl.
Search Deals
Price to beat on a one-way flight from Louisville Intl to Chicago O'Hare Intl.
Search Deals

Find flight deals from Louisville to O'Hare Intl

Cheapest flights from Louisville to O'Hare Intl
Explore the most affordable flight options available from Louisville to O'Hare Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 11, 2025.

This United Airlines deal was found by Cheapflights users on 9/10. 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.
Sat 10/45:48 pmSDF - ORD
Nonstop1h 47mUnited Airlines
Tue 10/72:42 pmORD - SDF
Nonstop1h 31mUnited Airlines
Deal found 9/10$101
This American Airlines deal was found by Cheapflights users on 9/9. 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.
Sat 10/256:45 amSDF - ORD
Nonstop1h 33mAmerican Airlines
Sat 11/12:58 pmORD - SDF
Nonstop1h 25mAmerican Airlines
Deal found 9/9$102
This United Airlines deal was found by Cheapflights users on 9/9. 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.
Thu 12/259:05 amSDF - ORD
Nonstop1h 44mUnited Airlines
Wed 1/217:52 pmORD - SDF
Nonstop1h 38mUnited Airlines
Deal found 9/9$117
This American Airlines deal was found by Cheapflights users on 9/10. 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.
Sat 10/46:12 pmSDF - ORD
Nonstop1h 40mAmerican Airlines
Sun 10/57:05 amORD - SDF
Nonstop1h 19mAmerican Airlines
Deal found 9/10$118
This American Airlines deal was found by Cheapflights users on 9/11. 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.
Wed 11/127:39 amSDF - ORD
Nonstop1h 40mAmerican Airlines
Fri 11/148:25 pmORD - SDF
Nonstop1h 30mAmerican Airlines
Deal found 9/11$120
This United Airlines deal was found by Cheapflights users on 9/10. 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.
Sun 12/142:02 pmSDF - ORD
Nonstop1h 38mUnited Airlines
Mon 12/1510:50 amORD - SDF
Nonstop1h 27mUnited Airlines
Deal found 9/10$133
This American Airlines deal was found by Cheapflights users on 9/9. 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.
Sat 10/46:12 pmSDF - ORD
Nonstop1h 40mAmerican Airlines
Tue 10/78:28 pmORD - SDF
Nonstop1h 35mAmerican Airlines
Deal found 9/9$143
This United Airlines deal was found by Cheapflights users on 9/11. 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.
Sun 10/269:00 amSDF - ORD
Nonstop1h 40mUnited Airlines
Wed 10/297:30 amORD - SDF
Nonstop1h 29mUnited Airlines
Deal found 9/11$149
This American Airlines deal was found by Cheapflights users on 9/9. 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.
Sat 10/256:45 amSDF - ORD
Nonstop1h 33mAmerican Airlines
Mon 10/278:28 pmORD - SDF
Nonstop1h 35mAmerican Airlines
Deal found 9/9$151
This United Airlines deal was found by Cheapflights users on 9/11. 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.
Tue 9/307:20 amSDF - ORD
Nonstop1h 38mUnited Airlines
Wed 10/17:25 amORD - SDF
Nonstop1h 36mUnited Airlines
Deal found 9/11$161
This United Airlines deal was found by Cheapflights users on 9/11. 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 10/37:20 pmSDF - ORD
Nonstop1h 49mUnited Airlines
Tue 10/74:00 pmORD - SDF
Nonstop1h 33mUnited Airlines
Deal found 9/11$164
This American Airlines deal was found by Cheapflights users on 9/10. 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.
Tue 10/146:45 amSDF - ORD
Nonstop1h 33mAmerican Airlines
Fri 10/176:59 amORD - SDF
Nonstop1h 24mAmerican Airlines
Deal found 9/10$166

Cheapflights Fare Finder

 
Customize your flight search to find flights from Louisville to O'Hare Intl 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 11, 2025.
Use the filters below to find and compare flights from Louisville to Chicago O'Hare Intl Airport that are best for you.

Fly from

Louisville

Fly to

O'Hare Intl

Route

Depart

Return

Price

LouisvilleChicago

SDF - ORD

SDFORD

Louisville Intl

Wed 11/5

9:00 am-9:40 am

Nonstop1h 40m

Chicago O'Hare Intl

Tue 11/18

7:55 pm-10:29 pm

Nonstop1h 34m

$101

LouisvilleChicago

SDF - ORD

SDFORD

Louisville Intl

Tue 10/28

9:00 am-9:40 am

Nonstop1h 40m

Chicago O'Hare Intl

Thu 10/30

7:55 pm-10:29 pm

Nonstop1h 34m

$117

LouisvilleChicago

SDF - ORD

SDFORD

Louisville Intl

Fri 11/7

5:57 pm-6:50 pm

Nonstop1h 53m

Chicago O'Hare Intl

Mon 11/10

7:55 pm-10:29 pm

Nonstop1h 34m

$133

LouisvilleChicago

SDF - ORD

SDFORD

Louisville Intl

Fri 11/14

2:02 pm-2:40 pm

Nonstop1h 38m

Chicago O'Hare Intl

Sun 11/16

10:50 am-1:17 pm

Nonstop1h 27m

$133

LouisvilleChicago

SDF - ORD

SDFORD

Louisville Intl

Tue 9/30

5:48 pm-6:35 pm

Nonstop1h 47m

Chicago O'Hare Intl

Sat 10/4

7:25 am-9:59 am

Nonstop1h 34m

$161

LouisvilleChicago

SDF - ORD

SDFORD

Louisville Intl

Wed 10/15

7:20 pm-8:09 pm

Nonstop1h 49m

Chicago O'Hare Intl

Sat 10/18

7:25 am-9:59 am

Nonstop1h 34m

$171

LouisvilleChicago

SDF - ORD

SDFORD

Louisville Intl

Fri 10/10

7:20 pm-8:09 pm

Nonstop1h 49m

Chicago O'Hare Intl

Mon 10/13

6:00 pm-8:33 pm

Nonstop1h 33m

$175

LouisvilleChicago

SDF - ORD

SDFORD

Louisville Intl

Wed 11/5

10:30 am-4:11 pm

1 stop6h 41m

Chicago O'Hare Intl

Tue 11/18

9:46 am-5:16 pm

1 stop6h 30m

$177

LouisvilleChicago

SDF - ORD

SDFORD

Louisville Intl

Sat 11/1

3:11 pm-6:49 pm

1 stop4h 38m

Chicago O'Hare Intl

Wed 12/17

6:45 am-1:49 pm

1 stop6h 04m

$177

LouisvilleChicago

SDF - ORD

SDFORD

Louisville Intl

Mon 10/27

2:33 pm-6:14 pm

1 stop4h 41m

Chicago O'Hare Intl

Wed 10/29

6:45 am-11:49 am

1 stop4h 04m

$177

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/9

Showing 1-10 of 23 results
1
2
3

Best time to book a flight from Louisville to O'Hare Intl

Have a flexible travel schedule? Discover the best time to fly to O'Hare Intl from Louisville 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 Louisville to Chicago O'Hare Intl Airport

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

Use this chart to determine the optimal time to book a round-trip flight from Louisville to O'Hare Intl. Price data was last updated on August 29, 2025.

Booking 51 days in advance of your planned departure date is, on average, the best time to get cheap flights from Louisville to Chicago O'Hare Intl Airport. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

What is the cheapest month to book a flight from Louisville to Chicago O'Hare Intl Airport?

Currently, August is the cheapest month in which you can book a flight from Louisville to Chicago O'Hare Intl Airport (average of $245). Flying from Louisville to Chicago O'Hare Intl Airport 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 SDF to ORD?

Find hourly flight availability from Louisville to O'Hare Intl. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated September 11, 2025.

A simple way to save on the total cost of your ticket is to fly from Louisville to Chicago O'Hare Intl Airport in the morning. If you’re flexible enough to do this you can expect to save up to 46% on your trip compared to booking a flight at noon.

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

Use this chart to determine the cheapest time to fly round-trip from Louisville to O'Hare Intl. Price data was last updated on September 7, 2025.

Travelers seeking maximum savings on their Louisville to Chicago O'Hare Intl Airport flight should consider departing on Thursday mornings when fares are most often at their lowest. Tuesday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.

How much does it cost to fly round-trip from Louisville to Chicago O'Hare Intl Airport?

Reviews of airlines servicing O'Hare Intl

Get insights into the airlines that provide service to O'Hare Intl. 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 O'Hare Intl. Reviews last updated September 11, 2025.
Read reviews from past customers who have flown United Airlines and American Airlines from Louisville to Chicago O'Hare Intl Airport. 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.
United Airlines
7.4
Good
8,937 reviews

Entertainment

7.1

Crew

8.1

Boarding

7.7

Comfort

7.3

Overall

7.4

Food

6.6

Reviews

1 / 20
2.0
Mediocre

Deb,Jan 2025

MKE - ORD

It was terrible! So much to say, but in a nutshell we used vouchers from United because our last trip with them was awful with many mishaps and errors made. Unfortunately, this trip was even worse!
United Airlines
7.4
Good
8,937 reviews
United Airlines
7.4
Good
8,937 reviews

Entertainment

7.1

Crew

8.1

Boarding

7.7

Comfort

7.3

Overall

7.4

Food

6.6

Reviews

1 / 20
2.0
Mediocre

Deb,Jan 2025

MKE - ORD

It was terrible! So much to say, but in a nutshell we used vouchers from United because our last trip with them was awful with many mishaps and errors made. Unfortunately, this trip was even worse!
American Airlines
7.2
Good
10,000 reviews
United Airlines
7.4
Good
8,937 reviews

Entertainment

7.1

Crew

8.1

Boarding

7.7

Comfort

7.3

Overall

7.4

Food

6.6

Reviews

1 / 20
2.0
Mediocre

Deb,Jan 2025

MKE - ORD

It was terrible! So much to say, but in a nutshell we used vouchers from United because our last trip with them was awful with many mishaps and errors made. Unfortunately, this trip was even worse!

Related info for your journey

Find useful and relevant information for your journey from Louisville to O'Hare Intl. 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 Louisville to Chicago O'Hare Intl?

    Louisville Intl (SDF) is the airport you will fly out of if you book a flight from Louisville to Chicago O'Hare Intl. You should not have trouble finding flights to Chicago O'Hare Intl from Louisville Intl; the airport handles an average of 37 outbound flights to Chicago O'Hare Intl per day. You should also have plenty of airline options to choose from since 2 airlines have flights from the Louisville airport to Chicago O'Hare Intl. It is only a 5.3 mi journey to Louisville Intl (SDF) from Louisville’s city center.

  • How long is the flight from Louisville to Chicago O'Hare Intl Airport?

    United Airlines can get you from Louisville to Chicago O'Hare Intl Airport in just under 1h 40m. Your travel time will be generally consistent. The distance between Louisville and Chicago O'Hare Intl Airport is about 287 mi. Generally, flights for this route are nonstop.

  • What are the cheapest airlines flying from Louisville to Chicago O'Hare Intl Airport round-trip?

    According to our current data, American Airlines ($97), and United Airlines ($128) offers the cheapest pricing from Louisville to Chicago O'Hare Intl Airport. You may be able to fly from Louisville to Chicago O'Hare Intl Airport for 66% less than the average price by searching for these airlines.

  • What are the most reliable airlines from Louisville to Chicago O'Hare Intl Airport?

    No one likes to see their flight delayed. When booking a flight from Louisville to Chicago O'Hare Intl Airport consider choosing Qatar Airways (92%), Republic Airways (91%) or Royal Jordanian (91%) as they are the most reliable in getting you off to your destination on time.

  • What are the cheapest flights from Louisville to Chicago O'Hare Intl Airport?

    Looking at all options, your cheapest flight can be booked for $75. While the most popular route (Louisville Intl - Chicago O'Hare Intl) can be booked for $101 on average, our data indicates $957 when flying from Louisville to Chicago O'Hare Intl Airport.

  • Can I find deals for flights from Louisville to O'Hare Intl that include hotel bookings?

    Yes. In addition to deals on Louisville to O'Hare Intl flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Louisville to O'Hare Intl?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Louisville to O'Hare Intl.

  • Can I find deals for business class flights from Louisville to O'Hare Intl?

    Yes. Cheapflights offers flight deals from Louisville to O'Hare Intl 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 Louisville to Chicago O'Hare Intl Airport?

    Currently, August is the cheapest month in which you can book a flight from Louisville to Chicago O'Hare Intl Airport (average of $245). Flying from Louisville to Chicago O'Hare Intl Airport 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

Traveling to a place near Chicago O'Hare Intl Airport?

Book flights to Chicago O'Hare Intl Airport if you plan to visit one of these locations
Schaumburg
Rosemont
Skokie
Gurnee
Hoffman Estates
Des Plaines
Elgin
Arlington Heights
Beloit
Racine
Rockford
Orland Park
Oak Brook
Downers Grove
Naperville
Elk Grove Village
Evanston
Merrillville
Bridgeview
Warrenville

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Top 2 airlines flying from Louisville to O'Hare Intl

Discover the top 2 airlines that operate flights from Louisville to O'Hare Intl. 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 11, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$97Average$262FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$128Average$295FlexibilityNo cancel feeOn-time69%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.