$109+ 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 5/30. Fares are subject to change and may not be available on all flights or dates of travel.
BOS — SDF
Jun 14 — Jun 211
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 Sunday 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 May 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 May 15, 2026.
This American Airlines deal was found by Cheapflights users on 5/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 6/267:00 am
BOS
- SDF
1 stop6h 52m
American Airlines
Sat 7/46:48 am
SDF
- BOS
1 stop5h 09m
American Airlines
Deal found 5/11![American Airlines logo]()
$414
This Kiwi.com deal was found by Cheapflights users on 5/13. 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.
Fri 9/181:00 pm
BOS
- SDF
1 stop19h 41m
Multiple Airlines
Thu 9/245:24 pm
SDF
- BOS
1 stop16h 45m
Multiple Airlines
Deal found 5/13![Multiple Airlines logo]()
$415
This Southwest deal was found by Cheapflights users on 5/11. 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 5/272:25 pm
BOS
- SDF
1 stop6h 10m
Southwest
Sat 5/304:25 pm
SDF
- BOS
1 stop7h 15m
Southwest
Deal found 5/11![Southwest logo]()
$416
This Southwest deal was found by Cheapflights users on 5/11. 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 6/91:25 pm
BOS
- SDF
2 stops8h 15m
Southwest
Fri 6/123:35 pm
SDF
- BOS
1 stop7h 15m
Southwest
Deal found 5/11![Southwest logo]()
$417
This Kiwi.com deal was found by Cheapflights users on 5/11. 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.
Fri 5/2912:01 pm
BOS
- SDF
2 stops20h 35m
Multiple Airlines
Sun 5/318:59 pm
SDF
- BOS
1 stop13h 38m
Multiple Airlines
Deal found 5/11![Multiple Airlines logo]()
$418
This Southwest deal was found by Cheapflights users on 5/13. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/181:10 pm
BOS
- SDF
2 stops9h 15m
Southwest
Sat 6/205:05 pm
SDF
- BOS
1 stop6h 10m
Southwest
Deal found 5/13![Southwest logo]()
$419
This Southwest deal was found by Cheapflights users on 5/13. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/82:25 pm
BOS
- SDF
2 stops8h 05m
Southwest
Sat 7/1111:50 am
SDF
- BOS
2 stops6h 30m
Southwest
Deal found 5/13![Southwest logo]()
$422
This Southwest deal was found by Cheapflights users on 5/14. 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.
Sun 7/1210:05 pm
BOS
- SDF
1 stop12h 00m
Southwest
Wed 7/154:15 pm
SDF
- BOS
2 stops7h 05m
Southwest
Deal found 5/14![Southwest logo]()
$423
This American Airlines deal was found by Cheapflights users on 5/13. 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.
Wed 9/165:10 pm
BOS
- SDF
1 stop6h 57m
American Airlines
Sun 9/205:00 pm
SDF
- BOS
Nonstop2h 30m
American Airlines
Deal found 5/13![American Airlines logo]()
$424
This American Airlines deal was found by Cheapflights users on 5/13. 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.
Wed 9/231:17 pm
BOS
- SDF
Nonstop2h 41m
American Airlines
Tue 9/295:00 pm
SDF
- BOS
Nonstop2h 30m
American Airlines
Deal found 5/13![American Airlines logo]()
$425
This Kiwi.com deal was found by Cheapflights users on 5/11. 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 9/1711:24 am
BOS
- SDF
2 stops25h 32m
Multiple Airlines
Sat 9/268:11 pm
SDF
- BOS
1 stop14h 21m
Multiple Airlines
Deal found 5/11![Multiple Airlines logo]()
$426
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 May 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 May 15, 2026.
This Southwest deal was found by Cheapflights users on 5/13. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/82:25 pm
BOS
- SDF
2 stops8h 05m
Southwest
Sat 7/1111:50 am
SDF
- BOS
2 stops6h 30m
Southwest
Deal found 5/13![Southwest logo]()
$422
This Delta deal was found by Cheapflights users on 5/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/309:26 am
BOS
- SDF
Nonstop2h 43m
Delta
Sun 8/26:00 am
SDF
- BOS
1 stop7h 21m
Delta
Deal found 5/10![Delta logo]()
$443
This United Airlines deal was found by Cheapflights users on 5/14. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/95:45 am
BOS
- SDF
1 stop8h 52m
United Airlines
Sat 6/136:00 am
SDF
- BOS
2 stops7h 32m
United Airlines
Deal found 5/14![United Airlines logo]()
$469
This Southwest deal was found by Cheapflights users on 5/13. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 6/54:45 pm
BOS
- SDF
1 stop5h 10m
Southwest
Tue 6/95:35 am
SDF
- BOS
2 stops8h 00m
Southwest
Deal found 5/13![Southwest logo]()
$435
This Delta deal was found by Cheapflights users on 5/13. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 6/199:28 am
BOS
- SDF
Nonstop2h 38m
Delta
Sun 6/216:00 am
SDF
- BOS
1 stop5h 14m
Delta
Deal found 5/13![Delta logo]()
$466
This Southwest deal was found by Cheapflights users on 5/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/18:45 am
BOS
- SDF
2 stops6h 15m
Southwest
Thu 6/43:35 pm
SDF
- BOS
2 stops8h 30m
Southwest
Deal found 5/10![Southwest logo]()
$453
This Delta deal was found by Cheapflights users on 5/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/239:20 am
BOS
- SDF
Nonstop2h 42m
Delta
Tue 5/2611:25 am
SDF
- BOS
1 stop5h 03m
Delta
Deal found 5/10![Delta logo]()
$467
This Southwest deal was found by Cheapflights users on 5/14. 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.
Thu 6/185:45 am
BOS
- SDF
1 stop6h 45m
Southwest
Mon 6/223:35 pm
SDF
- BOS
1 stop7h 15m
Southwest
Deal found 5/14![Southwest logo]()
$453
This Delta deal was found by Cheapflights users on 5/15. 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 5/309:20 am
BOS
- SDF
Nonstop2h 42m
Delta
Fri 6/51:15 pm
SDF
- BOS
Nonstop2h 25m
Delta
Deal found 5/15![Delta logo]()
$498
This Southwest deal was found by Cheapflights users on 5/12. 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.
Mon 6/15:30 am
BOS
- SDF
1 stop7h 05m
Southwest
Sat 6/65:15 pm
SDF
- BOS
1 stop6h 20m
Southwest
Deal found 5/12![Southwest logo]()
$474
This Southwest deal was found by Cheapflights users on 5/14. 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.
Thu 6/111:10 pm
BOS
- SDF
2 stops9h 15m
Southwest
Mon 6/153:35 pm
SDF
- BOS
2 stops7h 50m
Southwest
Deal found 5/14![Southwest logo]()
$481
This Southwest deal was found by Cheapflights users on 5/15. 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 5/309:00 am
BOS
- SDF
1 stop7h 15m
Southwest
Fri 6/55:05 pm
SDF
- BOS
1 stop4h 35m
Southwest
Deal found 5/15![Southwest logo]()
$483
Last-minute flights from Boston to LouisvilleDiscover last-minute flight deals from Boston to Louisville. Data last updated May 15, 2026 and is based on user searches.
Discover last-minute flight deals from Boston to Louisville. Data last updated May 15, 2026 and is based on user searches.
This Southwest deal was found by Cheapflights users on 5/11. 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 5/272:25 pm
BOS
- SDF
1 stop6h 10m
Southwest
Sat 5/304:25 pm
SDF
- BOS
1 stop7h 15m
Southwest
Deal found 5/11![Southwest logo]()
$416
This Kiwi.com deal was found by Cheapflights users on 5/11. 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.
Fri 5/2912:01 pm
BOS
- SDF
2 stops20h 35m
Multiple Airlines
Sun 5/318:59 pm
SDF
- BOS
1 stop13h 38m
Multiple Airlines
Deal found 5/11![Multiple Airlines logo]()
$418
This Kiwi.com deal was found by Cheapflights users on 5/12. 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 6/112:01 pm
BOS
- SDF
2 stops47h 29m
Multiple Airlines
Sun 6/79:34 pm
SDF
- BOS
1 stop14h 09m
Multiple Airlines
Deal found 5/12![Multiple Airlines logo]()
$431
This Southwest deal was found by Cheapflights users on 5/12. 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.
Wed 6/38:10 am
BOS
- SDF
1 stop6h 35m
Southwest
Mon 6/86:05 pm
SDF
- BOS
1 stop6h 05m
Southwest
Deal found 5/12![Southwest logo]()
$430
This Southwest deal was found by Cheapflights users on 5/11. 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 6/91:25 pm
BOS
- SDF
2 stops8h 15m
Southwest
Fri 6/123:35 pm
SDF
- BOS
1 stop7h 15m
Southwest
Deal found 5/11![Southwest logo]()
$417
This Southwest deal was found by Cheapflights users on 5/14. 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.
Sat 6/133:15 pm
BOS
- SDF
2 stops8h 05m
Southwest
Thu 6/183:35 pm
SDF
- BOS
2 stops8h 35m
Southwest
Deal found 5/14![Southwest logo]()
$424
This Southwest deal was found by Cheapflights users on 5/13. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/181:10 pm
BOS
- SDF
2 stops9h 15m
Southwest
Sat 6/205:05 pm
SDF
- BOS
1 stop6h 10m
Southwest
Deal found 5/13![Southwest logo]()
$419
This American Airlines deal was found by Cheapflights users on 5/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 6/267:00 am
BOS
- SDF
1 stop6h 52m
American Airlines
Sat 7/46:48 am
SDF
- BOS
1 stop5h 09m
American Airlines
Deal found 5/11![American Airlines logo]()
$414
This Southwest deal was found by Cheapflights users on 5/11. 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 6/305:25 am
BOS
- SDF
2 stops6h 40m
Southwest
Sun 7/52:30 pm
SDF
- BOS
2 stops9h 00m
Southwest
Deal found 5/11![Southwest logo]()
$415
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 May 15, 2026.
Search for one-way flight options from Boston to Louisville. Find affordable one-way fares based on user searches. Data last updated May 15, 2026.
This Kiwi.com deal was found by Cheapflights users on 5/11. 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.
Sat 5/3010:46 am
BOS
- SDF
1 stop6h 51m
Allegiant Air
Deal found 5/11![Allegiant Air logo]()
$109
This Kiwi.com deal was found by Cheapflights users on 5/11. 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 5/278:44 am
BOS
- SDF
1 stop28h 43m
Multiple Airlines
Deal found 5/11![Multiple Airlines logo]()
$110
This Kiwi.com deal was found by Cheapflights users on 5/14. 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 6/99:10 am
BOS
- SDF
2 stops23h 26m
Multiple Airlines
Deal found 5/14![Multiple Airlines logo]()
$144
This Kiwi.com deal was found by Cheapflights users on 5/14. 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.
Fri 5/2211:31 am
BOS
- SDF
1 stop30h 06m
Allegiant Air
Deal found 5/14![Allegiant Air logo]()
$145
This Kiwi.com deal was found by Cheapflights users on 5/12. 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.
Sat 7/410:59 am
BOS
- SDF
1 stop5h 55m
Allegiant Air
Deal found 5/12![Allegiant Air logo]()
$150
This Kiwi.com deal was found by Cheapflights users on 5/13. 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.
Fri 6/58:44 am
BOS
- SDF
1 stop23h 52m
Multiple Airlines
Deal found 5/13![Multiple Airlines logo]()
$151
This Kiwi.com deal was found by Cheapflights users on 5/13. 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.
Fri 7/108:47 am
BOS
- SDF
1 stop23h 49m
Multiple Airlines
Deal found 5/13![Multiple Airlines logo]()
$157
This Kiwi.com deal was found by Cheapflights users on 5/13. 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 6/169:10 am
BOS
- SDF
2 stops26h 20m
Multiple Airlines
Deal found 5/13![Multiple Airlines logo]()
$159
This Kiwi.com deal was found by Cheapflights users on 5/13. 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.
Sat 6/610:54 am
BOS
- SDF
2 stops31h 21m
Multiple Airlines
Deal found 5/13![Multiple Airlines logo]()
$161
This Kiwi.com deal was found by Cheapflights users on 5/11. 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.
Fri 7/38:47 am
BOS
- SDF
1 stop23h 49m
Multiple Airlines
Deal found 5/11![Multiple Airlines logo]()
$162
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 May 15, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $414 (American Airlines) |
One-way from | $109 (Kiwi.com) |
Popular in | April |
Cheapest in | August |
Average price | $470 |
Good round-trip deal | $457 or less |
Good one-way deal | $273 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 May 15, 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 7/8
2:25 pm-10:30 pm
2 stops8h 05m
Louisville Intl
Sat 7/11
11:50 am-6:20 pm
2 stops6h 30m
$422
BostonLouisville
BOS - SDF
BOSSDF
Boston Logan Intl
Fri 6/5
4:45 pm-9:55 pm
1 stop5h 10m
Louisville Intl
Tue 6/9
5:35 am-1:35 pm
2 stops8h 00m
$435
BostonLouisville
BOS - SDF
BOSSDF
Boston Logan Intl
Thu 7/30
9:26 am-12:09 pm
Nonstop2h 43m
Louisville Intl
Sun 8/2
6:00 am-1:21 pm
1 stop7h 21m
$443
BostonLouisville
BOS - SDF
BOSSDF
Boston Logan Intl
Mon 6/1
8:45 am-3:00 pm
2 stops6h 15m
Louisville Intl
Thu 6/4
3:35 pm-12:05 am
2 stops8h 30m
$453
BostonLouisville
BOS - SDF
BOSSDF
Boston Logan Intl
Thu 6/18
5:45 am-12:30 pm
1 stop6h 45m
Louisville Intl
Mon 6/22
3:35 pm-10:50 pm
1 stop7h 15m
$453
BostonLouisville
BOS - SDF
BOSSDF
Boston Logan Intl
Fri 6/19
9:28 am-12:06 pm
Nonstop2h 38m
Louisville Intl
Sun 6/21
6:00 am-11:14 am
1 stop5h 14m
$466
BostonLouisville
BOS - SDF
BOSSDF
Boston Logan Intl
Sat 5/23
9:20 am-12:02 pm
Nonstop2h 42m
Louisville Intl
Tue 5/26
11:25 am-4:28 pm
1 stop5h 03m
$467
BostonLouisville
BOS - SDF
BOSSDF
Boston Logan Intl
Tue 6/9
5:45 am-2:37 pm
1 stop8h 52m
Louisville Intl
Sat 6/13
6:00 am-1:32 pm
2 stops7h 32m
$469
BostonLouisville
BOS - SDF
BOSSDF
Boston Logan Intl
Mon 6/1
5:30 am-12:35 pm
1 stop7h 05m
Louisville Intl
Sat 6/6
5:15 pm-11:35 pm
1 stop6h 20m
$474
BostonLouisville
BOS - SDF
BOSSDF
Boston Logan Intl
Thu 6/11
1:10 pm-10:25 pm
2 stops9h 15m
Louisville Intl
Mon 6/15
3:35 pm-11:25 pm
2 stops7h 50m
$481
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 May.
| 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
Prices
Airlines
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 $346). Flying from Boston to Louisville in April is currently the most expensive (average of $536). 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 May 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 May 15, 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.
Entertainment
7.5
Crew
8.6
Food
7.0
Boarding
8.1
Comfort
8.0
Overall
8.0
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Entertainment
7.5
Crew
8.6
Food
7.0
Boarding
8.1
Comfort
8.0
Overall
8.0
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Entertainment
7.5
Crew
8.6
Food
7.0
Boarding
8.1
Comfort
8.0
Overall
8.0
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Entertainment
7.5
Crew
8.6
Food
7.0
Boarding
8.1
Comfort
8.0
Overall
8.0
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Entertainment
7.5
Crew
8.6
Food
7.0
Boarding
8.1
Comfort
8.0
Overall
8.0
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
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
Elizabethtown
Corydon
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 May 15, 2026.
Boston and Louisville flights
Browse other Boston and Louisville flight options. Last updated on May 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 May 15, 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 May 15, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$269 | Average$429 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$276 | Average$411 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$335 | Average$452 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$349 | Average$472 | FlexibilityNo cancel fee | On-time69% |