$171+ Cheap flights from Boston to Louisville (BOS - SDF)
This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 12/6. Fares are subject to change and may not be available on all flights or dates of travel.
BOS — SDF
Oct 29 — Nov 51
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 December or February, booked 80 days in advance, depart on a Wednesday or Saturday and return on a Thursday
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 September 29, 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 September 29, 2026.
This American Airlines deal was found by Cheapflights users on 9/28. 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.
Tue 11/109:23 am -
1 stop8h 20m
Mon 11/166:30 am -
1 stop10h 10m
Deal found 9/28![American Airlines logo]()
$313
This American Airlines deal was found by Cheapflights users on 9/24. 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 12/18:21 am -
1 stop9h 29m
Tue 12/811:17 am -
1 stop7h 34m
Deal found 9/24![American Airlines logo]()
$333
This Kiwi.com deal was found by Cheapflights users on 9/25. 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 11/612:39 pm -
2 stops26h 47m
Fri 11/138:54 pm -
1 stop12h 35m
Deal found 9/25![Multiple Airlines logo]()
$343
This American Airlines deal was found by Cheapflights users on 9/28. 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.
Wed 10/219:26 am -
1 stop7h 57m
Tue 10/276:00 am -
1 stop8h 51m
Deal found 9/28![American Airlines logo]()
$359
This Southwest deal was found by Cheapflights users on 9/24. 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 11/45:30 am -
1 stop7h 30m
Sat 11/73:25 pm -
1 stop6h 40m
Deal found 9/24![Southwest logo]()
$366
This American Airlines deal was found by Cheapflights users on 9/27. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/1412:39 pm -
1 stop7h 18m
Tue 11/176:30 am -
1 stop8h 12m
Deal found 9/27![American Airlines logo]()
$369
This Southwest deal was found by Cheapflights users on 9/27. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/215:35 am -
1 stop4h 25m
Mon 10/265:10 pm -
1 stop7h 00m
Deal found 9/27![Southwest logo]()
$377
This Southwest deal was found by Cheapflights users on 9/24. 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 11/137:45 pm -
1 stop4h 40m
Mon 11/162:05 pm -
2 stops7h 40m
Deal found 9/24![Southwest logo]()
$380
This Southwest deal was found by Cheapflights users on 9/28. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/215:35 am -
1 stop4h 25m
Tue 10/272:05 pm -
2 stops8h 05m
Deal found 9/28![Southwest logo]()
$382
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 September 29, 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 September 29, 2026.
This Southwest deal was found by Cheapflights users on 9/25. 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 11/115:35 pm -
1 stop4h 40m
Mon 11/162:05 pm -
2 stops7h 40m
Deal found 9/25![Southwest logo]()
$382
This Delta deal was found by Cheapflights users on 9/28. 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 10/218:00 am -
1 stop4h 54m
Wed 10/281:59 pm -
1 stop5h 06m
Deal found 9/28![Delta logo]()
$476
This United Airlines deal was found by Cheapflights users on 9/27. 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.
Wed 10/216:00 am -
2 stops13h 24m
Mon 10/262:11 pm -
1 stop20h 08m
Deal found 9/27![United Airlines logo]()
$544
This Southwest deal was found by Cheapflights users on 9/28. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/41:10 pm -
2 stops7h 30m
Wed 11/118:50 am -
2 stops8h 00m
Deal found 9/28![Southwest logo]()
$387
This Southwest deal was found by Cheapflights users on 9/28. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/1211:45 am -
2 stops9h 20m
Sun 11/155:40 am -
1 stop4h 00m
Deal found 9/28![Southwest logo]()
$445
This Delta deal was found by Cheapflights users on 9/28. 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.
Fri 11/274:57 pm -
1 stop4h 16m
Thu 12/36:00 am -
1 stop5h 06m
Deal found 9/28![Delta logo]()
$503
This Southwest deal was found by Cheapflights users on 9/26. 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 12/255:35 pm -
1 stop4h 35m
Tue 12/297:15 pm -
1 stop5h 20m
Deal found 9/26![Southwest logo]()
$454
This Delta deal was found by Cheapflights users on 9/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/279:45 am -
Nonstop2h 47m
Tue 12/17:05 am -
1 stop5h 33m
Deal found 9/25![Delta logo]()
$552
This Southwest deal was found by Cheapflights users on 9/27. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/235:10 am -
2 stops9h 55m
Fri 11/277:00 am -
2 stops7h 30m
Deal found 9/27![Southwest logo]()
$490
This Southwest deal was found by Cheapflights users on 9/25. 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 10/205:35 am -
1 stop6h 50m
Fri 10/236:15 pm -
1 stop5h 40m
Deal found 9/25![Southwest logo]()
$529
This Southwest deal was found by Cheapflights users on 9/25. 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 10/63:50 pm -
1 stop7h 15m
Wed 10/73:55 pm -
1 stop6h 50m
Deal found 9/25![Southwest logo]()
$547
Last-minute flights from Boston to LouisvilleDiscover last-minute flight deals from Boston to Louisville. Data last updated September 29, 2026 and is based on user searches.
Discover last-minute flight deals from Boston to Louisville. Data last updated September 29, 2026 and is based on user searches.
This American Airlines deal was found by Cheapflights users on 9/28. 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.
Wed 10/219:26 am -
1 stop7h 57m
Tue 10/276:00 am -
1 stop8h 51m
Deal found 9/28![American Airlines logo]()
$359
This Southwest deal was found by Cheapflights users on 9/27. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/215:35 am -
1 stop4h 25m
Mon 10/265:10 pm -
1 stop7h 00m
Deal found 9/27![Southwest logo]()
$377
This Southwest deal was found by Cheapflights users on 9/28. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/215:35 am -
1 stop4h 25m
Tue 10/272:05 pm -
2 stops8h 05m
Deal found 9/28![Southwest logo]()
$382
This Southwest deal was found by Cheapflights users on 9/27. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/216:30 pm -
1 stop4h 35m
Sat 10/245:35 am -
2 stops8h 25m
Deal found 9/27![Southwest logo]()
$396
This Southwest deal was found by Cheapflights users on 9/25. 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 10/249:40 am -
1 stop8h 50m
Mon 10/263:35 pm -
2 stops8h 00m
Deal found 9/25![Southwest logo]()
$388
This American Airlines deal was found by Cheapflights users on 9/28. 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.
Wed 10/289:26 am -
1 stop7h 57m
Wed 11/46:30 am -
1 stop10h 10m
Deal found 9/28![American Airlines logo]()
$313
This Southwest deal was found by Cheapflights users on 9/28. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/285:35 am -
2 stops7h 50m
Wed 11/48:50 am -
2 stops8h 00m
Deal found 9/28![Southwest logo]()
$387
This Southwest deal was found by Cheapflights users on 9/25. 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 10/286:30 pm -
1 stop4h 35m
Fri 10/305:35 am -
1 stop4h 25m
Deal found 9/25![Southwest logo]()
$391
This Delta deal was found by Cheapflights users on 9/28. 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 10/289:45 am -
Nonstop2h 42m
Wed 11/41:20 pm -
Nonstop2h 37m
Deal found 9/28![Delta logo]()
$405
This American Airlines deal was found by Cheapflights users on 9/27. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/318:26 am -
1 stop9h 20m
Sun 11/15:20 pm -
Nonstop2h 37m
Deal found 9/27![American Airlines logo]()
$398
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 September 29, 2026.
Search for one-way flight options from Boston to Louisville. Find affordable one-way fares based on user searches. Data last updated September 29, 2026.
This Kiwi.com deal was found by Cheapflights users on 9/25. 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 12/610:31 am -
1 stop25h 17m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/25![Allegiant Air logo]()
$171
This Southwest deal was found by Cheapflights users on 9/24. 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 10/285:35 am -
1 stop4h 25m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/24![Southwest logo]()
$179
This Kiwi.com deal was found by Cheapflights users on 9/25. 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 10/2411:47 am -
2 stops44h 15m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/25![Multiple Airlines logo]()
$187
This Southwest deal was found by Cheapflights users on 9/28. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/55:20 am -
1 stop6h 50m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/28![Southwest logo]()
$189
This Southwest deal was found by Cheapflights users on 9/25. 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 10/249:40 am -
1 stop8h 50m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/25![Southwest logo]()
$194
This Kiwi.com deal was found by Cheapflights users on 9/25. 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 12/610:31 am -
2 stops28h 55m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/25![Multiple Airlines logo]()
$208
This Kiwi.com deal was found by Cheapflights users on 9/25. 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 10/2711:12 am -
2 stops22h 59m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/25![Multiple Airlines logo]()
$218
This Southwest deal was found by Cheapflights users on 9/24. 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 10/203:50 pm -
1 stop7h 15m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/24![Southwest logo]()
$222
This Kiwi.com deal was found by Cheapflights users on 9/27. 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.
Mon 10/2611:47 am -
2 stops46h 24m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/27![Multiple Airlines logo]()
$223
This Kiwi.com deal was found by Cheapflights users on 9/24. 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 10/2211:47 am -
2 stops46h 24m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/24![Multiple Airlines logo]()
$224
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 September 29, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $313 (American Airlines) |
One-way from | $171 (Kiwi.com) |
Popular in | October |
Cheapest in | December |
Average price | $511 |
Good round-trip deal | $487 or less |
Good one-way deal | $308 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 7,457,451 searches. Data last updated September 29, 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 Boston Logan Intl - SDF Louisville Intl
BOSSDF
Boston Logan Intl
Thu 11/5
5:20 am-12:10 pm
1 stop6h 50m
Louisville Intl
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$189
BostonLouisville
BOS Boston Logan Intl - SDF Louisville Intl
BOSSDF
Boston Logan Intl
Tue 10/20
3:50 pm-11:05 pm
1 stop7h 15m
Louisville Intl
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$222
BostonLouisville
BOS Boston Logan Intl - SDF Louisville Intl
BOSSDF
Boston Logan Intl
Sat 10/3
5:35 am-2:55 pm
2 stops9h 20m
Louisville Intl
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$269
BostonLouisville
BOS Boston Logan Intl - SDF Louisville Intl
BOSSDF
Boston Logan Intl
Fri 10/23
12:55 pm-10:35 pm
1 stop9h 40m
Louisville Intl
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$275
BostonLouisville
BOS Boston Logan Intl - SDF Louisville Intl
BOSSDF
Boston Logan Intl
Thu 10/29
9:12 am-6:32 pm
1 stop9h 20m
Louisville Intl
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$311
BostonLouisville
BOS Boston Logan Intl - SDF Louisville Intl
BOSSDF
Boston Logan Intl
Thu 10/22
8:30 pm-9:34 am
1 stop13h 04m
Louisville Intl
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$328
Quickest round-trip
BostonLouisville
BOS Boston Logan Intl - SDF Louisville Intl
BOSSDF
Boston Logan Intl
Wed 11/25
9:55 am-12:42 pm
Nonstop2h 47m
Louisville Intl
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$329
BostonLouisville
BOS Boston Logan Intl - SDF Louisville Intl
BOSSDF
Boston Logan Intl
Sat 12/26
5:45 am-1:18 pm
1 stop7h 33m
Louisville Intl
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$329
BostonLouisville
BOS Boston Logan Intl - SDF Louisville Intl
BOSSDF
Boston Logan Intl
Thu 12/24
7:15 am-8:56 pm
2 stops13h 41m
Louisville Intl
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$334
BostonLouisville
BOS Boston Logan Intl - SDF Louisville Intl
BOSSDF
Boston Logan Intl
Sat 12/19
1:16 pm-6:47 pm
1 stop5h 31m
Louisville Intl
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$339
Showing 1-10 of 21 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 September.
| 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 79 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, December is the cheapest month in which you can book a flight from Boston to Louisville (average of $387). Flying from Boston to Louisville in October is currently the most expensive (average of $546). 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 September 29, 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 September 29, 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.
Overall
8.0
Boarding
8.1
Food
7.0
Entertainment
7.5
Comfort
8.0
Crew
8.6
Reviews
1 / 20
10.0
ExcellentEdward,Sep 2026
MCO - BWI
Overall
8.0
Boarding
8.1
Food
7.0
Entertainment
7.5
Comfort
8.0
Crew
8.6
Reviews
1 / 20
10.0
ExcellentEdward,Sep 2026
MCO - BWI
Overall
8.0
Boarding
8.1
Food
7.0
Entertainment
7.5
Comfort
8.0
Crew
8.6
Reviews
1 / 20
10.0
ExcellentEdward,Sep 2026
MCO - BWI
Overall
8.0
Boarding
8.1
Food
7.0
Entertainment
7.5
Comfort
8.0
Crew
8.6
Reviews
1 / 20
10.0
ExcellentEdward,Sep 2026
MCO - BWI
Overall
8.0
Boarding
8.1
Food
7.0
Entertainment
7.5
Comfort
8.0
Crew
8.6
Reviews
1 / 20
10.0
ExcellentEdward,Sep 2026
MCO - BWI
Overall
8.0
Boarding
8.1
Food
7.0
Entertainment
7.5
Comfort
8.0
Crew
8.6
Reviews
1 / 20
10.0
ExcellentEdward,Sep 2026
MCO - BWI
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
Jeffersonville
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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 7,457,451 searches. Data last updated September 29, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$268 | Average$441 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$304 | Average$491 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$321 | Average$463 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$342 | Average$502 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$376 | Average$538 | FlexibilityNo cancel fee | On-time69% |