$99+ Cheap flights from O'Hare Intl (ORD) to Louisville (SDF)
This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 11/4. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — SDF
Oct 8 — Oct 151
Round-trip
1 adult, Economy
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Find cheap flights from O'Hare Intl to Louisville 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 Chicago O'Hare Intl to Louisville Intl are usually found in December or November, booked 44 days in advance, depart on a Thursday or Saturday and return on a Friday
Cheap flight deals from O'Hare Intl to Louisville
Cheapest
Best
Last-minute
One-way
Cheapest flights from O'Hare Intl to LouisvilleExplore the most affordable flight options available from O'Hare Intl to Louisville. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 8, 2026.
Explore the most affordable flight options available from O'Hare Intl to Louisville. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 8, 2026.
This American Airlines deal was found by Cheapflights users on 9/7. 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 10/136:59 am -
Nonstop1h 33m
Sat 10/1712:46 pm -
Nonstop1h 44m
Deal found 9/7![American Airlines logo]()
$197
This American Airlines deal was found by Cheapflights users on 9/7. 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.
Fri 10/96:55 pm -
Nonstop1h 40m
Mon 10/125:19 pm -
Nonstop1h 55m
Deal found 9/7![American Airlines logo]()
$215
This American Airlines deal was found by Cheapflights users on 9/3. 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 9/2611:15 am -
Nonstop1h 28m
Tue 9/295:59 pm -
Nonstop1h 55m
Deal found 9/3![American Airlines logo]()
$217
This American Airlines deal was found by Cheapflights users on 9/3. 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.
Thu 10/17:09 am -
Nonstop1h 34m
Mon 10/55:19 pm -
Nonstop1h 55m
Deal found 9/3![American Airlines logo]()
$218
This Delta deal was found by Cheapflights users on 9/3. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/266:40 am -
1 stop7h 18m
Tue 9/292:47 pm -
1 stop6h 43m
Deal found 9/3![Delta logo]()
$237
This United Airlines deal was found by Cheapflights users on 9/7. 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.
Wed 10/216:55 am -
Nonstop1h 39m
Fri 10/237:00 am -
Nonstop1h 40m
Deal found 9/7![United Airlines logo]()
$277
This Delta deal was found by Cheapflights users on 9/3. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/16:40 am -
1 stop4h 40m
Mon 10/55:50 pm -
1 stop3h 40m
Deal found 9/3![Delta logo]()
$278
This United Airlines deal was found by Cheapflights users on 9/3. 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 11/84:00 pm -
Nonstop1h 32m
Tue 11/1010:37 am -
Nonstop1h 45m
Deal found 9/3![United Airlines logo]()
$281
This deal was found by Cheapflights users on 9/3. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/289:25 pm -
Nonstop1h 34m
Tue 9/297:00 am -
Nonstop1h 40m
Deal found 9/3![United Airlines logo]()
$287
This United Airlines deal was found by Cheapflights users on 9/5. 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 12/226:10 pm -
Nonstop1h 46m
Wed 12/3010:17 am -
Nonstop1h 49m
Deal found 9/5![United Airlines logo]()
$289
Best flights from O'Hare Intl to LouisvilleDiscover carefully curated flight deals from O'Hare Intl to Louisville that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 8, 2026.
Discover carefully curated flight deals from O'Hare Intl to Louisville that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 8, 2026.
This American Airlines deal was found by Cheapflights users on 9/7. 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 10/136:59 am -
Nonstop1h 33m
Sat 10/1712:46 pm -
Nonstop1h 44m
Deal found 9/7![American Airlines logo]()
$197
This United Airlines deal was found by Cheapflights users on 9/7. 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.
Wed 10/216:55 am -
Nonstop1h 39m
Fri 10/237:00 am -
Nonstop1h 40m
Deal found 9/7![United Airlines logo]()
$277
This Delta deal was found by Cheapflights users on 9/3. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/16:40 am -
1 stop4h 40m
Mon 10/55:50 pm -
1 stop3h 40m
Deal found 9/3![Delta logo]()
$293
This American Airlines deal was found by Cheapflights users on 9/7. 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.
Fri 10/96:55 pm -
Nonstop1h 40m
Mon 10/125:19 pm -
Nonstop1h 55m
Deal found 9/7![American Airlines logo]()
$215
This United Airlines deal was found by Cheapflights users on 9/3. 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 11/84:00 pm -
Nonstop1h 32m
Thu 11/1210:27 am -
Nonstop1h 45m
Deal found 9/3![United Airlines logo]()
$281
This United Airlines deal was found by Cheapflights users on 9/3. 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 11/88:50 am -
1 stop4h 57m
Wed 11/115:10 am -
Nonstop1h 45m
Deal found 9/3![United Airlines logo]()
$313
This Delta deal was found by Cheapflights users on 9/6. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/21:55 pm -
1 stop6h 21m
Sat 10/35:30 pm -
1 stop4h 00m
Deal found 9/6![Delta logo]()
$364
This United Airlines deal was found by Cheapflights users on 9/4. 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 10/24:30 pm -
Nonstop1h 41m
Sun 10/45:15 am -
Nonstop1h 41m
Deal found 9/4![United Airlines logo]()
$317
This United Airlines deal was found by Cheapflights users on 9/6. 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 10/28:50 am -
1 stop4h 49m
Sat 10/39:04 am -
Nonstop1h 41m
Deal found 9/6![United Airlines logo]()
$359
This United Airlines deal was found by Cheapflights users on 9/6. 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 10/18:50 am -
1 stop4h 49m
Mon 10/55:15 am -
Nonstop1h 41m
Deal found 9/6![United Airlines logo]()
$359
Last-minute flights from O'Hare Intl to LouisvilleDiscover last-minute flight deals from O'Hare Intl to Louisville. Data last updated September 8, 2026 and is based on user searches.
Discover last-minute flight deals from O'Hare Intl to Louisville. Data last updated September 8, 2026 and is based on user searches.
This American Airlines deal was found by Cheapflights users on 9/4. 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 9/2611:15 am -
Nonstop1h 28m
Tue 9/295:59 pm -
Nonstop1h 55m
Deal found 9/4![American Airlines logo]()
$217
This Delta deal was found by Cheapflights users on 9/4. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/266:40 am -
1 stop7h 18m
Tue 9/292:47 pm -
1 stop6h 43m
Deal found 9/4![Delta logo]()
$257
This deal was found by Cheapflights users on 9/3. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/289:25 pm -
Nonstop1h 34m
Tue 9/297:00 am -
Nonstop1h 40m
Deal found 9/3![United Airlines logo]()
$287
This American Airlines deal was found by Cheapflights users on 9/3. 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.
Thu 10/17:09 am -
Nonstop1h 34m
Mon 10/55:19 pm -
Nonstop1h 55m
Deal found 9/3![American Airlines logo]()
$218
This Delta deal was found by Cheapflights users on 9/3. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/16:40 am -
1 stop4h 40m
Mon 10/55:50 pm -
1 stop3h 40m
Deal found 9/3![Delta logo]()
$278
This Delta deal was found by Cheapflights users on 9/3. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/36:10 am -
1 stop4h 44m
Sat 10/1010:39 am -
1 stop6h 47m
Deal found 9/3![Delta logo]()
$237
This American Airlines deal was found by Cheapflights users on 9/7. 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.
Fri 10/96:55 pm -
Nonstop1h 40m
Mon 10/125:19 pm -
Nonstop1h 55m
Deal found 9/7![American Airlines logo]()
$215
This American Airlines deal was found by Cheapflights users on 9/7. 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 10/136:59 am -
Nonstop1h 33m
Sat 10/1712:46 pm -
Nonstop1h 44m
Deal found 9/7![American Airlines logo]()
$197
This United Airlines deal was found by Cheapflights users on 9/7. 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.
Wed 10/216:55 am -
Nonstop1h 39m
Fri 10/237:00 am -
Nonstop1h 40m
Deal found 9/7![United Airlines logo]()
$277
This American Airlines deal was found by Cheapflights users on 9/3. 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.
Thu 10/226:59 am -
Nonstop1h 33m
Sun 10/2510:16 am -
Nonstop1h 44m
Deal found 9/3![American Airlines logo]()
$281
One-way flights from O'Hare Intl to LouisvilleSearch for one-way flight options from O'Hare Intl to Louisville. Find affordable one-way fares based on user searches. Data last updated September 8, 2026.
Search for one-way flight options from O'Hare Intl to Louisville. Find affordable one-way fares based on user searches. Data last updated September 8, 2026.
This American Airlines deal was found by Cheapflights users on 9/8. 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 11/47:08 am -
Nonstop1h 30m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/8![American Airlines logo]()
$99
This American Airlines deal was found by Cheapflights users on 9/3. 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 10/32:55 pm -
Nonstop1h 34m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/3![American Airlines logo]()
$109
This United Airlines deal was found by Cheapflights users on 9/3. 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 9/255:50 pm -
Nonstop1h 41m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/3![United Airlines logo]()
$118
This Delta deal was found by Cheapflights users on 9/3. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/31:51 pm -
1 stop4h 39m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/3![Delta logo]()
$119
This Delta deal was found by Cheapflights users on 9/8. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/43:59 pm -
1 stop7h 10m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/8![Delta logo]()
$127
This Delta deal was found by Cheapflights users on 9/3. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/265:30 am -
1 stop5h 55m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/3![Delta logo]()
$129
This United Airlines deal was found by Cheapflights users on 9/8. 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 12/59:20 pm -
Nonstop1h 29m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/8![United Airlines logo]()
$134
This Delta deal was found by Cheapflights users on 9/4. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/66:08 pm -
1 stop4h 51m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/4![Delta logo]()
$138
This American Airlines deal was found by Cheapflights users on 9/3. 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 12/162:42 pm -
Nonstop1h 31m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/3![American Airlines logo]()
$144
This United Airlines deal was found by Cheapflights users on 9/7. 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.
Mon 10/59:25 pm -
Nonstop1h 34m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/7![United Airlines logo]()
$145
This American Airlines deal was found by Cheapflights users on 9/3. 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 9/262:55 pm -
Nonstop1h 34m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/3![American Airlines logo]()
$146
Find flight deals from O'Hare Intl to Louisville
Discover tips and strategies to find the most affordable flight options for your journey from O'Hare Intl (ORD) to Louisville (SDF). 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 8, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $217 (American Airlines) |
One-way from | $99 (American Airlines) |
Popular in | February |
Cheapest in | December |
Average price | $329 |
Good round-trip deal | $293 or less |
Good one-way deal | $217 or less |
Cheapflights Fare Finder
Customize your flight search to find flights from O'Hare Intl to Louisville 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 7,457,451 searches. Data last updated September 8, 2026.
Use the filters below to find and compare flights from Chicago O'Hare Intl Airport to Louisville that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
ChicagoLouisville
ORD Chicago O'Hare Intl - SDF Louisville Intl
ORDSDF
Chicago O'Hare Intl
Tue 12/8
6:22 pm-9:02 pm
Nonstop1h 40m
Louisville Intl
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$134
ChicagoLouisville
ORD Chicago O'Hare Intl - SDF Louisville Intl
ORDSDF
Chicago O'Hare Intl
Wed 9/30
5:50 pm-8:31 pm
Nonstop1h 41m
Louisville Intl
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$144
ChicagoLouisville
ORD Chicago O'Hare Intl - SDF Louisville Intl
ORDSDF
Chicago O'Hare Intl
Fri 10/9
9:25 pm-11:59 pm
Nonstop1h 34m
Louisville Intl
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$145
ChicagoLouisville
ORD Chicago O'Hare Intl - SDF Louisville Intl
ORDSDF
Chicago O'Hare Intl
Tue 10/13
5:27 am-12:54 pm
1 stop6h 27m
Louisville Intl
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$155
ChicagoLouisville
ORD Chicago O'Hare Intl - SDF Louisville Intl
ORDSDF
Chicago O'Hare Intl
Tue 10/6
6:30 am-2:41 pm
1 stop7h 11m
Louisville Intl
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$165
ChicagoLouisville
ORD Chicago O'Hare Intl - SDF Louisville Intl
ORDSDF
Chicago O'Hare Intl
Mon 10/5
5:50 pm-11:43 pm
1 stop4h 53m
Louisville Intl
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$165
Quickest round-trip
ChicagoLouisville
ORD Chicago O'Hare Intl - SDF Louisville Intl
ORDSDF
Chicago O'Hare Intl
Tue 12/15
10:55 am-1:24 pm
Nonstop1h 29m
Louisville Intl
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$180
ChicagoLouisville
ORD Chicago O'Hare Intl - SDF Louisville Intl
ORDSDF
Chicago O'Hare Intl
Tue 12/1
10:55 am-1:24 pm
Nonstop1h 29m
Louisville Intl
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$180
ChicagoLouisville
ORD Chicago O'Hare Intl - SDF Louisville Intl
ORDSDF
Chicago O'Hare Intl
Fri 12/4
6:22 pm-9:02 pm
Nonstop1h 40m
Louisville Intl
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$180
ChicagoLouisville
ORD Chicago O'Hare Intl - SDF Louisville Intl
ORDSDF
Chicago O'Hare Intl
Wed 10/7
9:25 pm-11:59 pm
Nonstop1h 34m
Louisville Intl
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$180
Showing 1-10 of 21 resultsSorted by cheapest first
Compare providers for flights from O'Hare Intl to Louisville
Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from O'Hare Intl to Louisville in September.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy1 star | Trust Score*3 stars |
- Most accurate provider: When it comes to deals on Chicago O'Hare Intl Airport-Louisville flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Chicago O'Hare Intl Airport-Louisville flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Chicago O'Hare Intl Airport-Louisville flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on Chicago O'Hare Intl Airport-Louisville flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Chicago O'Hare Intl Airport-Louisville flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.
Best time to book a flight from O'Hare Intl to Louisville
Have a flexible travel schedule? Discover the best time to fly to Louisville from O'Hare Intl with our price prediction graph.
ORD-SDF
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 Chicago O'Hare Intl Airport to Louisville
Prices
Airlines
How far ahead should I book a flight from Chicago O'Hare Intl Airport to Louisville?
The price you pay for your flight from Chicago O'Hare Intl Airport to Louisville may vary depending on when you book. For the best chance of a lower fare, look to book 32 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.
What is the cheapest month to book a flight from Chicago O'Hare Intl Airport to Louisville?
Currently, December is the cheapest month in which you can book a flight from Chicago O'Hare Intl Airport to Louisville (average of $285). Flying from Chicago O'Hare Intl Airport to Louisville in February is currently the most expensive (average of $517). 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 ORD to SDF?
Find hourly flight availability from O'Hare Intl to Louisville. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated September 8, 2026.
It’s typically best to fly out from Chicago O'Hare Intl Airport to Louisville in the morning. Doing so could potentially save you 25% on the flight price compared to flying in the afternoon, which is usually more expensive.
What is the cheapest day to fly from Chicago O'Hare Intl Airport to Louisville?
Use this chart to determine the cheapest time to fly round-trip from O'Hare Intl to Louisville. Price data was last updated on September 5, 2026.
Travelers seeking maximum savings on their Chicago O'Hare Intl Airport to Louisville flight should consider departing on Saturday afternoons when fares are most often at their lowest. Monday at noon flights should be avoided if possible as fares are typically the most expensive at this time.
Reviews of airlines servicing Louisville
Get insights into the airlines that provide service to Louisville. 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 Louisville. Reviews last updated September 8, 2026.
See what other customers who have flown with United Airlines and American Airlines from Chicago O'Hare Intl Airport to Louisville have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Boarding
7.7
Overall
7.4
Comfort
7.3
Crew
8.1
Entertainment
7.1
Food
6.6
Reviews
1 / 20
2.0
MediocreDawn,Aug 2026
ORD - DEN
Boarding
7.7
Overall
7.4
Comfort
7.3
Crew
8.1
Entertainment
7.1
Food
6.6
Reviews
1 / 20
2.0
MediocreDawn,Aug 2026
ORD - DEN
Boarding
7.7
Overall
7.4
Comfort
7.3
Crew
8.1
Entertainment
7.1
Food
6.6
Reviews
1 / 20
2.0
MediocreDawn,Aug 2026
ORD - DEN
Related info for your journey
Find useful and relevant information for your journey from O'Hare Intl to Louisville. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
Traveling to a place near Louisville?
Book flights to Louisville if you plan to visit one of these locationsShepherdsville
Elizabethtown
Jeffersonville
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Top 2 airlines flying from O'Hare Intl to Louisville
Discover the top 2 airlines that operate flights from O'Hare Intl to Louisville. 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 7,457,451 searches. Data last updated September 8, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$143 | Average$471 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$194 | Average$349 | FlexibilityNo cancel fee | On-time71% |