$130+ Cheap flights from Boston to Louisville (BOS - SDF)
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 7/17. Fares are subject to change and may not be available on all flights or dates of travel.
BOS — SDF
Aug 1 — Aug 81
Round-trip
1 adult, Economy
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Find cheap flights from Boston 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 Boston Logan Intl to Louisville Intl are usually found in August or December, booked 74 days in advance, depart on a Saturday or Tuesday and return on a Saturday
Cheap flight deals from Boston to Louisville
Cheapest
Best
Last-minute
One-way
Cheapest flights from Boston to LouisvilleExplore the most affordable flight options available from Boston to Louisville. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 2, 2026.
Explore the most affordable flight options available from Boston to Louisville. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 2, 2026.
This American Airlines deal was found by Cheapflights users on 7/1. 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 8/112:03 pm
BOS
- SDF
Nonstop2h 37m
American Airlines
Sat 8/156:28 am
SDF
- BOS
1 stop8h 56m
American Airlines
Deal found 7/1![American Airlines logo]()
$358
This Southwest deal was found by Cheapflights users on 6/29. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/45:25 am
BOS
- SDF
2 stops9h 55m
Southwest
Thu 8/63:20 pm
SDF
- BOS
1 stop7h 00m
Southwest
Deal found 6/29![Southwest logo]()
$360
This Kiwi.com deal was found by Cheapflights users on 6/30. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/318:41 am
BOS
- SDF
1 stop23h 55m
Multiple Airlines
Thu 8/139:24 pm
SDF
- BOS
1 stop11h 45m
Multiple Airlines
Deal found 6/30![Multiple Airlines logo]()
$361
This Delta deal was found by Cheapflights users on 6/30. 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.
Tue 8/49:30 am
BOS
- SDF
Nonstop2h 42m
Delta
Wed 8/125:59 pm
SDF
- BOS
1 stop5h 31m
Delta
Deal found 6/30![Delta logo]()
$365
This Southwest deal was found by Cheapflights users on 7/1. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/205:00 am
BOS
- SDF
2 stops8h 05m
Southwest
Thu 8/273:20 pm
SDF
- BOS
2 stops6h 50m
Southwest
Deal found 7/1![Southwest logo]()
$366
This American Airlines deal was found by Cheapflights users on 6/28. 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 9/111:17 pm
BOS
- SDF
Nonstop2h 36m
American Airlines
Mon 9/144:51 pm
SDF
- BOS
Nonstop2h 32m
American Airlines
Deal found 6/28![American Airlines logo]()
$368
This Delta deal was found by Cheapflights users on 6/28. 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 8/139:30 am
BOS
- SDF
Nonstop2h 42m
Delta
Wed 8/1912:54 pm
SDF
- BOS
Nonstop2h 36m
Delta
Deal found 6/28![Delta logo]()
$370
This Delta deal was found by Cheapflights users on 6/28. 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.
Sun 8/912:55 pm
BOS
- SDF
Nonstop2h 45m
Delta
Sat 8/224:20 pm
SDF
- BOS
Nonstop2h 37m
Delta
Deal found 6/28![Delta logo]()
$371
This Kiwi.com deal was found by Cheapflights users on 6/27. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/158:37 am
BOS
- SDF
1 stop11h 29m
Multiple Airlines
Sun 8/163:25 pm
SDF
- BOS
2 stops18h 19m
Multiple Airlines
Deal found 6/27![Multiple Airlines logo]()
$372
This Delta deal was found by Cheapflights users on 6/30. 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.
Tue 8/49:30 am
BOS
- SDF
Nonstop2h 42m
Delta
Mon 8/102:09 pm
SDF
- BOS
1 stop8h 24m
Delta
Deal found 6/30![Delta logo]()
$374
This American Airlines deal was found by Cheapflights users on 6/30. 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 11/117:20 am
BOS
- SDF
1 stop9h 09m
American Airlines
Sun 11/156:00 am
SDF
- BOS
1 stop8h 19m
American Airlines
Deal found 6/30![American Airlines logo]()
$376
Best flights from Boston to LouisvilleDiscover carefully curated flight deals from Boston to Louisville that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated July 2, 2026.
Discover carefully curated flight deals from Boston to Louisville that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated July 2, 2026.
This Delta deal was found by Cheapflights users on 6/28. 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.
Wed 11/119:30 am
BOS
- SDF
Nonstop2h 48m
Delta
Sun 11/157:30 pm
SDF
- BOS
1 stop5h 28m
Delta
Deal found 6/28![Delta logo]()
$378
This Southwest deal was found by Cheapflights users on 7/1. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/275:55 am
BOS
- SDF
1 stop6h 55m
Southwest
Wed 9/301:15 pm
SDF
- BOS
2 stops8h 55m
Southwest
Deal found 7/1![Southwest logo]()
$392
This United Airlines deal was found by Cheapflights users on 6/28. 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 9/237:30 am
BOS
- SDF
2 stops10h 09m
United Airlines
Tue 9/297:00 am
SDF
- BOS
2 stops7h 35m
United Airlines
Deal found 6/28![United Airlines logo]()
$413
This Delta deal was found by Cheapflights users on 7/1. 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.
Tue 8/49:30 am
BOS
- SDF
Nonstop2h 42m
Delta
Mon 8/1012:54 pm
SDF
- BOS
Nonstop2h 36m
Delta
Deal found 7/1![Delta logo]()
$394
This Southwest deal was found by Cheapflights users on 6/30. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/292:25 pm
BOS
- SDF
2 stops8h 10m
Southwest
Sun 8/22:30 pm
SDF
- BOS
2 stops9h 05m
Southwest
Deal found 6/30![Southwest logo]()
$397
This United Airlines deal was found by Cheapflights users on 6/28. 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 9/169:33 am
BOS
- SDF
2 stops9h 34m
United Airlines
Sat 9/197:10 am
SDF
- BOS
2 stops7h 40m
United Airlines
Deal found 6/28![United Airlines logo]()
$413
This Delta deal was found by Cheapflights users on 7/1. 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.
Wed 9/239:25 am
BOS
- SDF
Nonstop2h 34m
Delta
Mon 9/287:55 pm
SDF
- BOS
1 stop5h 22m
Delta
Deal found 7/1![Delta logo]()
$404
This Southwest deal was found by Cheapflights users on 6/29. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/195:35 am
BOS
- SDF
2 stops9h 25m
Southwest
Thu 10/227:20 am
SDF
- BOS
2 stops6h 20m
Southwest
Deal found 6/29![Southwest logo]()
$415
This United Airlines deal was found by Cheapflights users on 6/27. 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 9/245:45 am
BOS
- SDF
1 stop4h 33m
United Airlines
Mon 9/286:15 am
SDF
- BOS
1 stop6h 28m
United Airlines
Deal found 6/27![United Airlines logo]()
$433
This Delta deal was found by Cheapflights users on 7/1. 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 8/1410:00 am
BOS
- SDF
1 stop6h 44m
Delta
Sat 8/224:20 pm
SDF
- BOS
Nonstop2h 37m
Delta
Deal found 7/1![Delta logo]()
$404
This United Airlines deal was found by Cheapflights users on 7/1. 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 8/127:30 am
BOS
- SDF
2 stops9h 08m
United Airlines
Sat 8/151:56 pm
SDF
- BOS
1 stop10h 03m
United Airlines
Deal found 7/1![United Airlines logo]()
$451
Last-minute flights from Boston to LouisvilleDiscover last-minute flight deals from Boston to Louisville. Data last updated July 2, 2026 and is based on user searches.
Discover last-minute flight deals from Boston to Louisville. Data last updated July 2, 2026 and is based on user searches.
This American Airlines deal was found by Cheapflights users on 6/30. 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 7/296:00 am
BOS
- SDF
1 stop7h 36m
American Airlines
Mon 8/36:00 am
SDF
- BOS
1 stop8h 44m
American Airlines
Deal found 6/30![American Airlines logo]()
$376
This Kiwi.com deal was found by Cheapflights users on 6/30. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/318:41 am
BOS
- SDF
1 stop23h 55m
Multiple Airlines
Thu 8/139:24 pm
SDF
- BOS
1 stop11h 45m
Multiple Airlines
Deal found 6/30![Multiple Airlines logo]()
$361
This American Airlines deal was found by Cheapflights users on 6/30. 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 7/311:35 pm
BOS
- SDF
Nonstop2h 41m
American Airlines
Wed 8/55:10 pm
SDF
- BOS
Nonstop2h 31m
American Airlines
Deal found 6/30![American Airlines logo]()
$368
This Southwest deal was found by Cheapflights users on 6/29. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/45:25 am
BOS
- SDF
2 stops9h 55m
Southwest
Thu 8/63:20 pm
SDF
- BOS
1 stop7h 00m
Southwest
Deal found 6/29![Southwest logo]()
$360
This Delta deal was found by Cheapflights users on 6/30. 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.
Tue 8/49:30 am
BOS
- SDF
Nonstop2h 42m
Delta
Tue 8/116:00 am
SDF
- BOS
1 stop5h 23m
Delta
Deal found 6/30![Delta logo]()
$365
This Delta deal was found by Cheapflights users on 6/30. 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.
Tue 8/49:30 am
BOS
- SDF
Nonstop2h 42m
Delta
Fri 8/142:09 pm
SDF
- BOS
1 stop9h 21m
Delta
Deal found 6/30![Delta logo]()
$374
This Delta deal was found by Cheapflights users on 6/30. 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.
Tue 8/44:00 pm
BOS
- SDF
1 stop4h 59m
Delta
Sat 8/156:00 am
SDF
- BOS
1 stop5h 10m
Delta
Deal found 6/30![Delta logo]()
$375
This Delta deal was found by Cheapflights users on 6/28. 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.
Sun 8/912:55 pm
BOS
- SDF
Nonstop2h 45m
Delta
Wed 8/1912:54 pm
SDF
- BOS
Nonstop2h 36m
Delta
Deal found 6/28![Delta logo]()
$371
This American Airlines deal was found by Cheapflights users on 7/1. 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 8/112:03 pm
BOS
- SDF
Nonstop2h 37m
American Airlines
Sat 8/156:28 am
SDF
- BOS
1 stop8h 56m
American Airlines
Deal found 7/1![American Airlines logo]()
$358
This Delta deal was found by Cheapflights users on 6/28. 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 8/139:30 am
BOS
- SDF
Nonstop2h 42m
Delta
Wed 8/1912:54 pm
SDF
- BOS
Nonstop2h 36m
Delta
Deal found 6/28![Delta logo]()
$370
This Kiwi.com deal was found by Cheapflights users on 6/27. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/158:37 am
BOS
- SDF
1 stop11h 29m
Multiple Airlines
Sun 8/163:25 pm
SDF
- BOS
2 stops18h 19m
Multiple Airlines
Deal found 6/27![Multiple Airlines logo]()
$372
This Southwest deal was found by Cheapflights users on 7/1. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/205:00 am
BOS
- SDF
2 stops8h 05m
Southwest
Thu 8/273:20 pm
SDF
- BOS
2 stops6h 50m
Southwest
Deal found 7/1![Southwest logo]()
$366
One-way flights from Boston to LouisvilleSearch for one-way flight options from Boston to Louisville. Find affordable one-way fares based on user searches. Data last updated July 2, 2026.
Search for one-way flight options from Boston to Louisville. Find affordable one-way fares based on user searches. Data last updated July 2, 2026.
This Kiwi.com deal was found by Cheapflights users on 6/28. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/178:41 am
BOS
- SDF
1 stop23h 55m
Multiple Airlines
Deal found 6/28![Multiple Airlines logo]()
$130
This Kiwi.com deal was found by Cheapflights users on 6/30. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/2512:45 pm
BOS
- SDF
2 stops25h 31m
Multiple Airlines
Deal found 6/30![Multiple Airlines logo]()
$146
This Delta deal was found by Cheapflights users on 6/29. 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 9/2612:30 pm
BOS
- SDF
Nonstop2h 39m
Delta
Deal found 6/29![Delta logo]()
$152
This Kiwi.com deal was found by Cheapflights users on 6/30. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/2912:45 pm
BOS
- SDF
3 stops29h 30m
Multiple Airlines
Deal found 6/30![Multiple Airlines logo]()
$155
This Southwest deal was found by Cheapflights users on 6/30. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/255:20 am
BOS
- SDF
1 stop4h 40m
Southwest
Deal found 6/30![Southwest logo]()
$161
This Kiwi.com deal was found by Cheapflights users on 6/28. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/248:41 am
BOS
- SDF
1 stop23h 55m
Multiple Airlines
Deal found 6/28![Multiple Airlines logo]()
$162
This Southwest deal was found by Cheapflights users on 6/30. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/285:25 am
BOS
- SDF
2 stops6h 40m
Southwest
Deal found 6/30![Southwest logo]()
$166
Find flight deals from Boston to Louisville
Discover tips and strategies to find the most affordable flight options for your journey from Boston (BOS) 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 July 2, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $358 (American Airlines) |
One-way from | $130 (Kiwi.com) |
Popular in | April |
Cheapest in | August |
Average price | $453 |
Good round-trip deal | $394 or less |
Good one-way deal | $288 or less |
Cheapflights Fare Finder
Customize your flight search to find flights from Boston 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 2,558,603 searches. Data last updated July 2, 2026.
Use the filters below to find and compare flights from Boston to Louisville that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
BostonLouisville
BOS - SDF
BOSSDF
Boston Logan Intl
Wed 11/11
9:30 am-12:18 pm
Nonstop2h 48m
Louisville Intl
Sun 11/15
7:30 pm-12:58 am
1 stop5h 28m
$378
BostonLouisville
BOS - SDF
BOSSDF
Boston Logan Intl
Sun 9/27
5:55 am-12:50 pm
1 stop6h 55m
Louisville Intl
Wed 9/30
1:15 pm-10:10 pm
2 stops8h 55m
$392
Quickest round-trip
BostonLouisville
BOS - SDF
BOSSDF
Boston Logan Intl
Tue 8/4
9:30 am-12:12 pm
Nonstop2h 42m
Louisville Intl
Mon 8/10
12:54 pm-3:30 pm
Nonstop2h 36m
$394
BostonLouisville
BOS - SDF
BOSSDF
Boston Logan Intl
Wed 7/29
2:25 pm-10:35 pm
2 stops8h 10m
Louisville Intl
Sun 8/2
2:30 pm-11:35 pm
2 stops9h 05m
$397
BostonLouisville
BOS - SDF
BOSSDF
Boston Logan Intl
Wed 9/23
9:25 am-11:59 am
Nonstop2h 34m
Louisville Intl
Mon 9/28
7:55 pm-1:17 am
1 stop5h 22m
$404
BostonLouisville
BOS - SDF
BOSSDF
Boston Logan Intl
Fri 8/14
10:00 am-4:44 pm
1 stop6h 44m
Louisville Intl
Sat 8/22
4:20 pm-6:57 pm
Nonstop2h 37m
$404
BostonLouisville
BOS - SDF
BOSSDF
Boston Logan Intl
Wed 9/23
7:30 am-5:39 pm
2 stops10h 09m
Louisville Intl
Tue 9/29
7:00 am-2:35 pm
2 stops7h 35m
$413
BostonLouisville
BOS - SDF
BOSSDF
Boston Logan Intl
Wed 9/16
9:33 am-7:07 pm
2 stops9h 34m
Louisville Intl
Sat 9/19
7:10 am-2:50 pm
2 stops7h 40m
$413
BostonLouisville
BOS - SDF
BOSSDF
Boston Logan Intl
Mon 10/19
5:35 am-3:00 pm
2 stops9h 25m
Louisville Intl
Thu 10/22
7:20 am-1:40 pm
2 stops6h 20m
$415
BostonLouisville
BOS - SDF
BOSSDF
Boston Logan Intl
Thu 9/24
5:45 am-10:18 am
1 stop4h 33m
Louisville Intl
Mon 9/28
6:15 am-12:43 pm
1 stop6h 28m
$433
Showing 1-10 of 23 resultsSorted by cheapest first
Compare providers for flights from Boston 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 Boston to Louisville in July.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy- | Trust Score*1 star |
- Most accurate provider: When it comes to deals on Boston-Louisville flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Boston-Louisville flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Boston-Louisville flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on Boston-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 Boston-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 Boston to Louisville
Have a flexible travel schedule? Discover the best time to fly to Louisville from Boston with our price prediction graph.
BOS-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 Boston to Louisville
How far ahead should I book a flight from Boston to Louisville?
The price you pay for your flight from Boston to Louisville may vary depending on when you book. For the best chance of a lower fare, look to book 73 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 Boston to Louisville?
Currently, August is the cheapest month in which you can book a flight from Boston to Louisville (average of $365). Flying from Boston to Louisville in April is currently the most expensive (average of $532). 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 BOS to SDF?
Find hourly flight availability from Boston 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 July 2, 2026.
When flying from Boston to Louisville, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.
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 July 2, 2026.
Get a feel of what it's like to fly with Southwest,Delta, andUnited Airlines from Boston to Louisville by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Food
7.0
Entertainment
7.5
Crew
8.6
Boarding
8.1
Overall
7.9
Comfort
8.0
Reviews
1 / 20
8.0
ExcellentLibby,Jun 2026
TUS - LAS
Food
7.0
Entertainment
7.5
Crew
8.6
Boarding
8.1
Overall
7.9
Comfort
8.0
Reviews
1 / 20
8.0
ExcellentLibby,Jun 2026
TUS - LAS
Food
7.0
Entertainment
7.5
Crew
8.6
Boarding
8.1
Overall
7.9
Comfort
8.0
Reviews
1 / 20
8.0
ExcellentLibby,Jun 2026
TUS - LAS
Food
7.0
Entertainment
7.5
Crew
8.6
Boarding
8.1
Overall
7.9
Comfort
8.0
Reviews
1 / 20
8.0
ExcellentLibby,Jun 2026
TUS - LAS
Food
7.0
Entertainment
7.5
Crew
8.6
Boarding
8.1
Overall
7.9
Comfort
8.0
Reviews
1 / 20
8.0
ExcellentLibby,Jun 2026
TUS - LAS
Related info for your journey
Find useful and relevant information for your journey from Boston 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 locationsCorydon
Shepherdsville
Elizabethtown
Jeffersonville
Bardstown
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Alternative routes for Boston to Louisville
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Complete your trip
Complete your trip to Louisville by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from Boston to Louisville by cabin class
Find flights from Boston to Louisville, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Other flights to Louisville
Explore flights to Louisville departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on July 2, 2026.
Boston and Louisville flights
Browse other Boston and Louisville flight options. Last updated on July 2, 2026.
Other flights from Boston
Browse through other flights departing from Boston. Flights are based on user searches made on Cheapflights and were last updated on July 2, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Top 4 airlines flying from Boston to Louisville
Discover the top 4 airlines that operate flights from Boston 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 2,558,603 searches. Data last updated July 2, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$272 | Average$455 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$281 | Average$433 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$335 | Average$482 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$349 | Average$528 | FlexibilityNo cancel fee | On-time69% |