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$81+ 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 10/29. Fares are subject to change and may not be available on all flights or dates of travel.
BOS — SDF
out 30 — nov 61
qui 10/30
qui 11/6
1 adult, Economy
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Cheapflights Tip: The best prices from Boston Logan Intl to Louisville Intl are usually found in August or March, booked 83 days in advance, depart on a Saturday or Wednesday and return on a Saturday

Cheap 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 setembro 30, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$319
(American Airlines)

One-way from

$81
(Priceline)

Popular in

May

Cheapest in

August

Average price

$409

Good round-trip deal

$347 or less

Good one-way deal

$180 or less
Provider with most accurate pricing for Boston Logan Intl-Louisville Intl flight deals.
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Provider most trusted by Cheapflights users for Boston Logan Intl-Louisville Intl flights.
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From Boston Logan Intl to Louisville Intl
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One-way flight from Boston Logan Intl to Louisville Intl
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Highest demand for flights based on searches. 2% potential increase in price ($10 potential increase over avg. RT price).
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Cheapest flight prices on average. 0% potential price decrease ($4 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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Price to beat on a round-trip flight from Boston Logan Intl to Louisville Intl.
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Price to beat on a one-way flight from Boston Logan Intl to Louisville Intl.
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Find flight deals from Boston to Louisville

Cheapest flights from Boston to Louisville
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 setembro 30, 2025.

This American Airlines deal was found by Cheapflights users on 9/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sex 11/2110:40 amBOS - SDF
Nonstop2h 50mAmerican Airlines
ter 11/2512:43 pmSDF - BOS
1 stop7h 39mAmerican Airlines
Deal found 9/30$314
This American Airlines deal was found by Cheapflights users on 9/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom 11/27:00 amBOS - SDF
Nonstop2h 59mAmerican Airlines
qui 11/1310:30 amSDF - BOS
Nonstop2h 23mAmerican Airlines
Deal found 9/30$316
This American Airlines deal was found by Cheapflights users on 9/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
qui 10/239:20 amBOS - SDF
1 stop5h 42mAmerican Airlines
seg 10/277:33 amSDF - BOS
1 stop4h 51mAmerican Airlines
Deal found 9/30$319
This Delta deal was found by Cheapflights users on 9/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb 10/252:45 pmBOS - SDF
Nonstop2h 37mDelta
seg 10/274:25 pmSDF - BOS
Nonstop2h 34mDelta
Deal found 9/29$320
This Kiwi.com deal was found by Cheapflights users on 9/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom 11/25:16 amBOS - SDF
2 stops26h 42mMultiple Airlines
sex 11/79:54 amSDF - BOS
1 stop14h 05mMultiple Airlines
Deal found 9/30$322
This Southwest deal was found by Cheapflights users on 9/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb 11/85:35 amBOS - SDF
1 stop7h 00mSouthwest
qua 11/121:10 pmSDF - BOS
2 stops9h 05mSouthwest
Deal found 9/29$323
This American Airlines deal was found by Cheapflights users on 9/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sex 10/318:05 amBOS - SDF
1 stop5h 00mAmerican Airlines
dom 11/25:25 amSDF - BOS
1 stop4h 41mAmerican Airlines
Deal found 9/29$324
This American Airlines deal was found by Cheapflights users on 9/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
qui 11/137:00 amBOS - SDF
Nonstop2h 59mAmerican Airlines
dom 11/166:25 amSDF - BOS
1 stop4h 41mAmerican Airlines
Deal found 9/29$326
This Delta deal was found by Cheapflights users on 9/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb 11/89:30 amBOS - SDF
Nonstop2h 38mDelta
sex 11/142:22 pmSDF - BOS
1 stop5h 38mDelta
Deal found 9/29$327
This American Airlines deal was found by Cheapflights users on 9/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb 10/2510:00 amBOS - SDF
Nonstop2h 43mAmerican Airlines
seg 10/277:33 amSDF - BOS
1 stop4h 51mAmerican Airlines
Deal found 9/29$330
This American Airlines deal was found by Cheapflights users on 9/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
qui 11/206:40 amBOS - SDF
1 stop9h 18mAmerican Airlines
dom 11/232:00 pmSDF - BOS
Nonstop2h 15mAmerican Airlines
Deal found 9/29$331
This Delta deal was found by Cheapflights users on 9/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
qui 11/2012:30 pmBOS - SDF
Nonstop2h 53mDelta
dom 11/234:15 pmSDF - BOS
Nonstop2h 31mDelta
Deal found 9/29$333

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 setembro 30, 2025.
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

dom 11/2

5:16 am-7:58 am

2 stops26h 42m

Louisville Intl

sex 11/7

9:54 am-11:59 pm

1 stop14h 05m

$322

BostonLouisville

BOS - SDF

BOSSDF

Boston Logan Intl

sáb 11/8

5:35 am-12:35 pm

1 stop7h 00m

Louisville Intl

qua 11/12

1:10 pm-10:15 pm

2 stops9h 05m

$323

BostonLouisville

BOS - SDF

BOSSDF

Boston Logan Intl

sáb 11/8

9:30 am-12:08 pm

Nonstop2h 38m

Louisville Intl

sex 11/14

2:22 pm-8:00 pm

1 stop5h 38m

$327

BostonLouisville

BOS - SDF

BOSSDF

Boston Logan Intl

seg 11/10

5:10 pm-12:06 am

1 stop6h 56m

Louisville Intl

sáb 11/15

12:00 pm-2:28 pm

Nonstop2h 28m

$327

BostonLouisville

BOS - SDF

BOSSDF

Boston Logan Intl

qui 3/26

12:30 pm-3:16 pm

Nonstop2h 46m

Louisville Intl

seg 3/30

4:30 pm-6:50 pm

Nonstop2h 20m

$333

BostonLouisville

BOS - SDF

BOSSDF

Boston Logan Intl

seg 1/12

2:40 pm-10:10 pm

1 stop7h 30m

Louisville Intl

sex 1/16

4:15 pm-10:55 pm

1 stop6h 40m

$337

BostonLouisville

BOS - SDF

BOSSDF

Boston Logan Intl

qui 10/23

10:30 am-3:51 pm

1 stop5h 21m

Louisville Intl

seg 10/27

4:25 pm-6:59 pm

Nonstop2h 34m

$348

BostonLouisville

BOS - SDF

BOSSDF

Boston Logan Intl

sex 11/7

1:23 pm-6:08 pm

1 stop4h 45m

Louisville Intl

dom 11/9

6:00 am-11:33 am

1 stop5h 33m

$353

BostonLouisville

BOS - SDF

BOSSDF

Boston Logan Intl

sex 12/26

5:30 am-1:12 pm

1 stop7h 42m

Louisville Intl

sex 1/2

8:00 am-10:28 am

Nonstop2h 28m

$356

BostonLouisville

BOS - SDF

BOSSDF

Boston Logan Intl

seg 11/24

11:59 am-7:27 pm

2 stops7h 28m

Louisville Intl

ter 12/2

6:00 am-12:33 pm

1 stop6h 33m

$363

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/28

Showing 1-10 of 21 results
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3

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.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars
PricelinePrice Accuracy1 starTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • 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.
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 September 26, 2025.

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 62 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, January is the cheapest month in which you can book a flight from Boston to Louisville (average of $299). Flying from Boston to Louisville in April is currently the most expensive (average of $369). 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 setembro 30, 2025.

It’s typically best to fly out from Boston to Louisville in the morning. Doing so could potentially save you 9% on the flight price compared to flying in the evening, which is usually more expensive.

What is the cheapest day to fly from Boston to Louisville?

Use this chart to determine the cheapest time to fly round-trip from Boston to Louisville. Price data was last updated on September 28, 2025.

Travelers seeking maximum savings on their Boston to Louisville flight should consider departing on Friday evenings when fares are most often at their lowest. Tuesday at noon flights should be avoided if possible as fares are typically the most expensive at this time.

Reviews of airlines servicing Louisville

Get insights into the airlines that provide service to Louisville. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Louisville. Reviews last updated setembro 30, 2025.
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.
Southwest
8.0
Very good
4,245 reviews

Crew

8.6

Boarding

8.1

Entertainment

7.5

Food

7.0

Overall

8.0

Comfort

8.0

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
Southwest
8.0
Very good
4,245 reviews
Southwest
8.0
Very good
4,245 reviews

Crew

8.6

Boarding

8.1

Entertainment

7.5

Food

7.0

Overall

8.0

Comfort

8.0

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
Delta
8.0
Very good
7,964 reviews
Southwest
8.0
Very good
4,245 reviews

Crew

8.6

Boarding

8.1

Entertainment

7.5

Food

7.0

Overall

8.0

Comfort

8.0

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
United Airlines
7.4
Good
8,931 reviews
Southwest
8.0
Very good
4,245 reviews

Crew

8.6

Boarding

8.1

Entertainment

7.5

Food

7.0

Overall

8.0

Comfort

8.0

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
American Airlines
7.2
Good
10,000 reviews
Southwest
8.0
Very good
4,245 reviews

Crew

8.6

Boarding

8.1

Entertainment

7.5

Food

7.0

Overall

8.0

Comfort

8.0

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
Spirit Airlines
6.3
Okay
8,062 reviews
Southwest
8.0
Very good
4,245 reviews

Crew

8.6

Boarding

8.1

Entertainment

7.5

Food

7.0

Overall

8.0

Comfort

8.0

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines

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.

  • What airports do I use to fly from Boston to Louisville?

    You will need to book a flight from Boston Logan Intl to Louisville Intl if you want to fly from Boston to Louisville. At least 5 different airlines have flights from Logan Intl (BOS) to Louisville Intl (SDF) on a regular basis. There is 1 flight to Louisville from the Boston airport per day. If you manage to book one that is nonstop, then you can expect the flight time from BOS to SDF to be around 2h 36m.

  • How long is the flight from Boston to Louisville?

    There are many flights that can get you from Boston to Louisville in 2h 38m. Fly via Southwest or Delta to get the fastest option. Boston and Louisville are separated by a distance of 827 mi. This flight may include one or multiple stops.

  • What are the cheapest airlines flying from Boston to Louisville round-trip?

    Spirit Airlines, at $119, was found to be the cheapest airline from Boston to Louisville.Alternate airlines to your destination round-trip include Delta and American Airlines. Spirit Airlines is priced at 68% lower than the current average price of a flight leaving 3 months from now.

  • What are the most reliable airlines from Boston to Louisville?

    The top 3 most reliable airlines when flying from Boston to Louisville are Envoy Air (92%), Delta (92%) and American Airlines (86%).

  • What are the cheapest flights from Boston to Louisville?

    Looking at all options, your cheapest flight can be booked for $134. While the most popular route (Boston Logan Intl - Louisville Intl) can be booked for $199 on average, our data indicates $325 when flying from Boston to Louisville.

  • Can I find deals for flights from Boston to Louisville that include hotel bookings?

    Yes. In addition to deals on Boston to Louisville flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Boston to Louisville?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Boston to Louisville.

  • Can I find deals for business class flights from Boston to Louisville?

    Yes. Cheapflights offers flight deals from Boston to Louisville by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Boston to Louisville?

    Currently, January is the cheapest month in which you can book a flight from Boston to Louisville (average of $299). Flying from Boston to Louisville in April is currently the most expensive (average of $369). 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.

See more FAQs

Traveling to a place near Louisville?

Book flights to Louisville if you plan to visit one of these locations
Shepherdsville
Jeffersonville
Elizabethtown
Corydon
Bardstown

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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 2,558,603 searches. Data last updated setembro 30, 2025.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$119Average$230FlexibilityNo cancel feeOn-time65%
DeltaCheapest$247Average$384FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$261Average$382FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$268Average$472FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$268Average$402FlexibilityNo cancel feeOn-time63%

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