$97+ 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 5/9. Fares are subject to change and may not be available on all flights or dates of travel.
BOS — SDF
Mar 17 — Mar 241
1 adult, Economy
We work with more than 300 partners to bring you better travel deals
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 March, booked 36 days in advance, depart on a Saturday or Wednesday 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 February 15, 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 February 15, 2026.
This Kiwi.com deal was found by Cheapflights users on 2/12. 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.
Mon 5/45:40 am
BOS
- SDF
1 stop13h 18m
Multiple Airlines
Wed 5/68:06 pm
SDF
- BOS
1 stop15h 37m
Multiple Airlines
Deal found 2/12![Multiple Airlines logo]()
$221
This Kiwi.com deal was found by Cheapflights users on 2/11. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/711:16 am
BOS
- SDF
1 stop24h 25m
Multiple Airlines
Mon 5/117:48 pm
SDF
- BOS
1 stop28h 11m
Multiple Airlines
Deal found 2/11![Multiple Airlines logo]()
$222
This Kiwi.com deal was found by Cheapflights users on 2/14. 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.
Mon 5/45:40 am
BOS
- SDF
1 stop13h 18m
Multiple Airlines
Fri 5/87:48 pm
SDF
- BOS
1 stop28h 11m
Multiple Airlines
Deal found 2/14![Multiple Airlines logo]()
$223
This Kiwi.com deal was found by Cheapflights users on 2/14. 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 2/2812:35 pm
BOS
- SDF
1 stop24h 51m
Multiple Airlines
Thu 3/52:26 pm
SDF
- BOS
1 stop21h 27m
Multiple Airlines
Deal found 2/14![Multiple Airlines logo]()
$229
This Kiwi.com deal was found by Cheapflights users on 2/11. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/65:23 pm
BOS
- SDF
2 stops20h 04m
Multiple Airlines
Mon 5/117:48 pm
SDF
- BOS
1 stop28h 11m
Multiple Airlines
Deal found 2/11![Multiple Airlines logo]()
$237
This Kiwi.com deal was found by Cheapflights users on 2/14. 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.
Thu 2/265:27 am
BOS
- SDF
1 stop27h 13m
Multiple Airlines
Thu 3/52:26 pm
SDF
- BOS
1 stop21h 27m
Multiple Airlines
Deal found 2/14![Multiple Airlines logo]()
$239
This American Airlines deal was found by Cheapflights users on 2/14. 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 5/235:05 am
BOS
- SDF
1 stop8h 54m
American Airlines
Tue 5/267:37 am
SDF
- BOS
1 stop4h 28m
American Airlines
Deal found 2/14![American Airlines logo]()
$249
This Kiwi.com deal was found by Cheapflights users on 2/14. 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 2/2812:35 pm
BOS
- SDF
1 stop24h 51m
Multiple Airlines
Tue 3/33:33 pm
SDF
- BOS
1 stop25h 42m
Multiple Airlines
Deal found 2/14![Multiple Airlines logo]()
$250
This Priceline deal was found by Cheapflights users on 2/14. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/35:27 am
BOS
- SDF
1 stop9h 11m
Spirit Airlines
Thu 3/53:33 pm
SDF
- BOS
1 stop8h 11m
Spirit Airlines
Deal found 2/14![Spirit Airlines logo]()
$253
This Booking.com deal was found by Cheapflights users on 2/13. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/105:27 am
BOS
- SDF
1 stop9h 11m
Spirit Airlines
Thu 3/123:33 pm
SDF
- BOS
1 stop8h 26m
Spirit Airlines
Deal found 2/13![Spirit Airlines logo]()
$255
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 February 15, 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 February 15, 2026.
This Kiwi.com deal was found by Cheapflights users on 2/14. 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.
Thu 2/265:27 am
BOS
- SDF
1 stop27h 13m
Multiple Airlines
Tue 3/33:33 pm
SDF
- BOS
1 stop25h 42m
Multiple Airlines
Deal found 2/14![Multiple Airlines logo]()
$260
This Delta deal was found by Cheapflights users on 2/12. 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 3/2510:37 am
BOS
- SDF
Nonstop2h 39m
Delta
Sat 3/282:25 pm
SDF
- BOS
Nonstop2h 18m
Delta
Deal found 2/12![Delta logo]()
$295
This United Airlines deal was found by Cheapflights users on 2/13. 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 3/214:30 pm
BOS
- SDF
1 stop5h 43m
United Airlines
Wed 3/256:00 am
SDF
- BOS
1 stop6h 56m
United Airlines
Deal found 2/13![United Airlines logo]()
$315
This American Airlines deal was found by Cheapflights users on 2/13. 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 3/213:00 pm
BOS
- SDF
Nonstop2h 51m
American Airlines
Mon 3/231:30 pm
SDF
- BOS
Nonstop2h 21m
American Airlines
Deal found 2/13![American Airlines logo]()
$325
This Southwest deal was found by Cheapflights users on 2/12. 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 3/102:00 pm
BOS
- SDF
2 stops8h 15m
Southwest
Tue 3/175:00 pm
SDF
- BOS
2 stops6h 25m
Southwest
Deal found 2/12![Southwest logo]()
$325
This Southwest deal was found by Cheapflights users on 2/11. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/146:20 am
BOS
- SDF
1 stop6h 20m
Southwest
Thu 4/164:45 pm
SDF
- BOS
1 stop7h 10m
Southwest
Deal found 2/11![Southwest logo]()
$336
This Delta deal was found by Cheapflights users on 2/12. 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 3/2710:37 am
BOS
- SDF
Nonstop2h 39m
Delta
Mon 3/301:56 pm
SDF
- BOS
Nonstop2h 19m
Delta
Deal found 2/12![Delta logo]()
$353
This Southwest deal was found by Cheapflights users on 2/11. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/255:45 am
BOS
- SDF
1 stop7h 00m
Southwest
Fri 3/276:15 pm
SDF
- BOS
1 stop6h 30m
Southwest
Deal found 2/11![Southwest logo]()
$344
This Southwest deal was found by Cheapflights users on 2/11. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/66:20 am
BOS
- SDF
2 stops8h 25m
Southwest
Mon 5/112:40 pm
SDF
- BOS
2 stops8h 30m
Southwest
Deal found 2/11![Southwest logo]()
$346
This Southwest deal was found by Cheapflights users on 2/14. 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.
Fri 4/2412:50 pm
BOS
- SDF
2 stops8h 10m
Southwest
Wed 4/294:40 pm
SDF
- BOS
1 stop5h 50m
Southwest
Deal found 2/14![Southwest logo]()
$349
Last-minute flights from Boston to LouisvilleDiscover last-minute flight deals from Boston to Louisville. Data last updated February 15, 2026 and is based on user searches.
Discover last-minute flight deals from Boston to Louisville. Data last updated February 15, 2026 and is based on user searches.
This Kiwi.com deal was found by Cheapflights users on 2/14. 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.
Thu 2/265:27 am
BOS
- SDF
1 stop27h 13m
Multiple Airlines
Thu 3/52:26 pm
SDF
- BOS
1 stop21h 27m
Multiple Airlines
Deal found 2/14![Multiple Airlines logo]()
$239
This Kiwi.com deal was found by Cheapflights users on 2/14. 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.
Thu 2/265:27 am
BOS
- SDF
1 stop27h 13m
Multiple Airlines
Tue 3/33:33 pm
SDF
- BOS
1 stop25h 42m
Multiple Airlines
Deal found 2/14![Multiple Airlines logo]()
$260
This Kiwi.com deal was found by Cheapflights users on 2/14. 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 2/2812:35 pm
BOS
- SDF
1 stop24h 51m
Multiple Airlines
Thu 3/52:26 pm
SDF
- BOS
1 stop21h 27m
Multiple Airlines
Deal found 2/14![Multiple Airlines logo]()
$229
This Kiwi.com deal was found by Cheapflights users on 2/14. 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 2/2812:35 pm
BOS
- SDF
1 stop24h 51m
Multiple Airlines
Tue 3/33:33 pm
SDF
- BOS
1 stop25h 42m
Multiple Airlines
Deal found 2/14![Multiple Airlines logo]()
$250
This Kiwi.com deal was found by Cheapflights users on 2/14. 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 2/2812:35 pm
BOS
- SDF
1 stop24h 51m
Multiple Airlines
Wed 3/41:19 pm
SDF
- BOS
1 stop19h 47m
Multiple Airlines
Deal found 2/14![Multiple Airlines logo]()
$272
This Priceline deal was found by Cheapflights users on 2/14. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/35:27 am
BOS
- SDF
1 stop9h 11m
Spirit Airlines
Thu 3/53:33 pm
SDF
- BOS
1 stop8h 11m
Spirit Airlines
Deal found 2/14![Spirit Airlines logo]()
$253
This Priceline deal was found by Cheapflights users on 2/13. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/35:27 am
BOS
- SDF
1 stop9h 11m
Spirit Airlines
Wed 3/41:19 pm
SDF
- BOS
1 stop8h 42m
Spirit Airlines
Deal found 2/13![Spirit Airlines logo]()
$265
This Kiwi.com deal was found by Cheapflights users on 2/11. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/96:10 pm
BOS
- SDF
1 stop20h 28m
Multiple Airlines
Mon 3/169:13 pm
SDF
- BOS
2 stops37h 16m
Multiple Airlines
Deal found 2/11![Multiple Airlines logo]()
$263
This Kiwi.com deal was found by Cheapflights users on 2/11. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/96:10 pm
BOS
- SDF
1 stop20h 28m
Spirit Airlines
Mon 3/1612:09 pm
SDF
- BOS
1 stop28h 45m
Spirit Airlines
Deal found 2/11![Spirit Airlines logo]()
$275
This Booking.com deal was found by Cheapflights users on 2/13. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/105:27 am
BOS
- SDF
1 stop9h 11m
Spirit Airlines
Thu 3/123:33 pm
SDF
- BOS
1 stop8h 26m
Spirit Airlines
Deal found 2/13![Spirit Airlines logo]()
$255
This Kiwi.com deal was found by Cheapflights users on 2/13. 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 3/244:23 pm
BOS
- SDF
1 stop18h 51m
Multiple Airlines
Sun 3/292:26 pm
SDF
- BOS
1 stop21h 14m
Multiple Airlines
Deal found 2/13![Multiple Airlines logo]()
$270
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 February 15, 2026.
Search for one-way flight options from Boston to Louisville. Find affordable one-way fares based on user searches. Data last updated February 15, 2026.
This American Airlines deal was found by Cheapflights users on 2/13. 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 5/912:22 pm
BOS
- SDF
1 stop9h 08m
American Airlines
Deal found 2/13![American Airlines logo]()
$97
This Kiwi.com deal was found by Cheapflights users on 2/13. 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.
Mon 5/115:40 am
BOS
- SDF
1 stop13h 18m
Multiple Airlines
Deal found 2/13![Multiple Airlines logo]()
$102
This Kiwi.com deal was found by Cheapflights users on 2/11. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/137:00 am
BOS
- SDF
2 stops35h 15m
Multiple Airlines
Deal found 2/11![Multiple Airlines logo]()
$106
This Spirit deal was found by Cheapflights users on 2/11. 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 Spirit is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/105:27 am
BOS
- SDF
1 stop9h 11m
Spirit Airlines
Deal found 2/11![Spirit Airlines logo]()
$110
This Priceline deal was found by Cheapflights users on 2/13. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/125:40 am
BOS
- SDF
1 stop8h 47m
Spirit Airlines
Deal found 2/13![Spirit Airlines logo]()
$115
This Expedia deal was found by Cheapflights users on 2/13. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/97:00 am
BOS
- SDF
1 stop12h 32m
Spirit Airlines
Deal found 2/13![Spirit Airlines logo]()
$116
This Kiwi.com deal was found by Cheapflights users on 2/11. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/1211:16 am
BOS
- SDF
1 stop24h 25m
Multiple Airlines
Deal found 2/11![Multiple Airlines logo]()
$123
This Kiwi.com deal was found by Cheapflights users on 2/11. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 3/84:22 pm
BOS
- SDF
1 stop19h 59m
Spirit Airlines
Deal found 2/11![Spirit Airlines logo]()
$127
This Kiwi.com deal was found by Cheapflights users on 2/14. 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 3/174:23 pm
BOS
- SDF
1 stop18h 51m
Spirit Airlines
Deal found 2/14![Spirit Airlines logo]()
$130
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 February 15, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $221 (Kiwi.com) |
One-way from | $97 (American Airlines) |
Popular in | November |
Cheapest in | August |
Average price | $407 |
Good round-trip deal | $347 or less |
Good one-way deal | $268 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 February 15, 2026.
Use the filters below to find and compare flights from Boston to Louisville that are best for you.
Fly from
Boston
Fly to
Louisville
Route
Depart
Return
Price
BostonLouisville
BOS - SDF
BOSSDF
Boston Logan Intl
Thu 2/26
5:27 am-8:40 am
1 stop27h 13m
Louisville Intl
Tue 3/3
3:33 pm-5:15 pm
1 stop25h 42m
$260
BostonLouisville
BOS - SDF
BOSSDF
Boston Logan Intl
Wed 3/25
10:37 am-1:16 pm
Nonstop2h 39m
Louisville Intl
Sat 3/28
2:25 pm-4:43 pm
Nonstop2h 18m
$295
BostonLouisville
BOS - SDF
BOSSDF
Boston Logan Intl
Sat 3/21
4:30 pm-10:13 pm
1 stop5h 43m
Louisville Intl
Wed 3/25
6:00 am-12:56 pm
1 stop6h 56m
$315
BostonLouisville
BOS - SDF
BOSSDF
Boston Logan Intl
Sat 3/21
3:00 pm-5:51 pm
Nonstop2h 51m
Louisville Intl
Mon 3/23
1:30 pm-3:51 pm
Nonstop2h 21m
$325
BostonLouisville
BOS - SDF
BOSSDF
Boston Logan Intl
Tue 3/10
2:00 pm-10:15 pm
2 stops8h 15m
Louisville Intl
Tue 3/17
5:00 pm-11:25 pm
2 stops6h 25m
$325
BostonLouisville
BOS - SDF
BOSSDF
Boston Logan Intl
Tue 4/14
6:20 am-12:40 pm
1 stop6h 20m
Louisville Intl
Thu 4/16
4:45 pm-11:55 pm
1 stop7h 10m
$336
BostonLouisville
BOS - SDF
BOSSDF
Boston Logan Intl
Wed 3/25
5:45 am-12:45 pm
1 stop7h 00m
Louisville Intl
Fri 3/27
6:15 pm-12:45 am
1 stop6h 30m
$344
BostonLouisville
BOS - SDF
BOSSDF
Boston Logan Intl
Wed 5/6
6:20 am-2:45 pm
2 stops8h 25m
Louisville Intl
Mon 5/11
2:40 pm-11:10 pm
2 stops8h 30m
$346
BostonLouisville
BOS - SDF
BOSSDF
Boston Logan Intl
Fri 4/24
12:50 pm-9:00 pm
2 stops8h 10m
Louisville Intl
Wed 4/29
4:40 pm-10:30 pm
1 stop5h 50m
$349
BostonLouisville
BOS - SDF
BOSSDF
Boston Logan Intl
Fri 3/27
10:37 am-1:16 pm
Nonstop2h 39m
Louisville Intl
Mon 3/30
1:56 pm-4:15 pm
Nonstop2h 19m
$353
Showing 1-10 of 18 results
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 February.
| 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?
Use this chart to determine the optimal time to book a round-trip flight from Boston to Louisville. Price data was last updated on February 13, 2026.
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 36 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, June is the cheapest month in which you can book a flight from Boston to Louisville (average of $89). Flying from Boston to Louisville in February is currently the most expensive (average of $267). 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 February 15, 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 February 15, 2026.
Get a feel of what it's like to fly with Southwest, Delta, and United 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.
Comfort
8.0
Entertainment
7.5
Food
7.0
Boarding
8.1
Overall
8.0
Crew
8.6
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Comfort
8.0
Entertainment
7.5
Food
7.0
Boarding
8.1
Overall
8.0
Crew
8.6
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Comfort
8.0
Entertainment
7.5
Food
7.0
Boarding
8.1
Overall
8.0
Crew
8.6
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Comfort
8.0
Entertainment
7.5
Food
7.0
Boarding
8.1
Overall
8.0
Crew
8.6
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Comfort
8.0
Entertainment
7.5
Food
7.0
Boarding
8.1
Overall
8.0
Crew
8.6
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Comfort
8.0
Entertainment
7.5
Food
7.0
Boarding
8.1
Overall
8.0
Crew
8.6
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
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 locationsShepherdsville
Jeffersonville
Elizabethtown
Corydon
Bardstown
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.
Alternative routes
Complete your trip
Flights by cabin class
Louisville flight routes
Other flight options
Other flights from Boston
Popular flights
Alternative routes for Boston to Louisville
See prices for flight routes from nearby airports that may be better suited for you.
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 February 15, 2026.
Boston and Louisville flights
Browse other Boston and Louisville flight options. Last updated on February 15, 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 February 15, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Top 5 airlines flying from Boston to Louisville
Discover the top 5 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 February 15, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$100 | Average$243 | FlexibilityNo cancel fee | On-time65% | |
| Cheapest$209 | Average$388 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$276 | Average$394 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$289 | Average$388 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$310 | Average$398 | FlexibilityNo cancel fee | On-time63% |