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$86+ 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 1/27. Fares are subject to change and may not be available on all flights or dates of travel.
BOS — SDF
Jan 27 — Feb 31
Tue 1/27
Tue 2/3
1 adult, Economy
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1. Tell us where you want to go

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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 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 December 28, 2025.

This American Airlines deal was found by Cheapflights users on 12/27. 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.
Wed 12/317:00 amBOS - SDF
Nonstop2h 58mAmerican Airlines
Tue 1/136:00 amSDF - BOS
1 stop9h 33mAmerican Airlines
Deal found 12/27$310
This American Airlines deal was found by Cheapflights users on 12/26. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/317:00 amBOS - SDF
Nonstop2h 58mAmerican Airlines
Sat 1/31:00 pmSDF - BOS
Nonstop2h 28mAmerican Airlines
Deal found 12/26$326
This American Airlines deal was found by Cheapflights users on 12/27. 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.
Wed 12/317:00 amBOS - SDF
Nonstop2h 58mAmerican Airlines
Sun 1/116:00 amSDF - BOS
1 stop9h 33mAmerican Airlines
Deal found 12/27$330
This American Airlines deal was found by Cheapflights users on 12/26. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/287:00 amBOS - SDF
Nonstop2h 58mAmerican Airlines
Thu 1/298:07 amSDF - BOS
1 stop8h 36mAmerican Airlines
Deal found 12/26$363
This American Airlines deal was found by Cheapflights users on 12/27. 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.
Wed 12/317:00 amBOS - SDF
Nonstop2h 58mAmerican Airlines
Fri 1/26:27 amSDF - BOS
1 stop6h 15mAmerican Airlines
Deal found 12/27$372
This Delta deal was found by Cheapflights users on 12/26. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/305:15 pmBOS - SDF
Nonstop2h 55mDelta
Tue 1/133:00 pmSDF - BOS
Nonstop2h 26mDelta
Deal found 12/26$377

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 December 28, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$189
(Kiwi.com)

One-way from

$86
(Priceline)

Popular in

December

Cheapest in

August

Average price

$449

Good round-trip deal

$377 or less

Good one-way deal

$338 or less
Provider with most accurate pricing for Boston Logan Intl-Louisville Intl flight deals.
Search Deals
Provider most trusted by Cheapflights users for Boston Logan Intl-Louisville Intl flights.
Search Deals
From Boston Logan Intl to Louisville Intl
Search Deals
One-way flight from Boston Logan Intl to Louisville Intl
Search Deals
Highest demand for flights based on searches. 8% potential increase in price ($35 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($6 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
Search Deals
Price to beat on a round-trip flight from Boston Logan Intl to Louisville Intl.
Search Deals
Price to beat on a one-way flight from Boston Logan Intl to Louisville Intl.
Search Deals

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 December 28, 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

Wed 1/28

3:43 pm-3:49 pm

1 stop24h 06m

Louisville Intl

Sun 2/1

3:36 pm-4:28 pm

1 stop24h 52m

$189

BostonLouisville

BOS - SDF

BOSSDF

Boston Logan Intl

Thu 2/5

5:34 am-2:41 pm

1 stop9h 07m

Louisville Intl

Tue 2/24

3:33 pm-11:46 pm

1 stop8h 13m

$190

BostonLouisville

BOS - SDF

BOSSDF

Boston Logan Intl

Sun 2/8

7:00 am-6:04 pm

2 stops35h 04m

Louisville Intl

Wed 2/11

1:55 pm-11:19 pm

1 stop9h 24m

$228

BostonLouisville

BOS - SDF

BOSSDF

Boston Logan Intl

Sat 2/7

5:27 pm-2:41 pm

1 stop21h 14m

Louisville Intl

Tue 2/10

3:36 pm-11:57 pm

1 stop8h 21m

$270

BostonLouisville

BOS - SDF

BOSSDF

Boston Logan Intl

Wed 1/21

12:55 pm-11:19 pm

1 stop10h 24m

Louisville Intl

Mon 1/26

10:35 am-1:04 pm

Nonstop2h 29m

$296

BostonLouisville

BOS - SDF

BOSSDF

Boston Logan Intl

Sat 1/17

3:43 pm-2:41 pm

2 stops22h 58m

Louisville Intl

Tue 1/20

3:36 pm-2:38 pm

2 stops23h 02m

$303

BostonLouisville

BOS - SDF

BOSSDF

Boston Logan Intl

Thu 2/5

9:27 am-12:14 pm

Nonstop2h 47m

Louisville Intl

Tue 2/24

12:33 pm-2:44 pm

Nonstop2h 11m

$304

BostonLouisville

BOS - SDF

BOSSDF

Boston Logan Intl

Fri 2/13

9:05 am-11:49 am

Nonstop2h 44m

Louisville Intl

Tue 2/17

12:33 pm-2:44 pm

Nonstop2h 11m

$304

BostonLouisville

BOS - SDF

BOSSDF

Boston Logan Intl

Thu 2/19

9:05 am-11:49 am

Nonstop2h 44m

Louisville Intl

Wed 2/25

12:33 pm-2:44 pm

Nonstop2h 11m

$304

BostonLouisville

BOS - SDF

BOSSDF

Boston Logan Intl

Fri 2/27

6:10 pm-11:05 am

1 stop16h 55m

Louisville Intl

Sun 3/1

3:33 pm-11:46 pm

1 stop8h 13m

$305

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/27

Showing 1-10 of 21 results
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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 December.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star
eDreamsPrice Accuracy3 starsTrust 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 eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Boston-Louisville flight deals on Cheapflights vs. eDreams >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 eDreams the most. eDreams 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 December 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 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 March is currently the most expensive (average of $258). 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 December 28, 2025.

It’s typically best to fly out from Boston to Louisville in the afternoon. Doing so could potentially save you 15% on the flight price compared to flying in the evening, which is usually more expensive.

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 December 28, 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
4,256 reviews

Food

7.0

Entertainment

7.5

Crew

8.6

Overall

8.0

Comfort

8.0

Boarding

8.1

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am
Southwest
8.0
Very good
4,256 reviews
Southwest
8.0
Very good
4,256 reviews

Food

7.0

Entertainment

7.5

Crew

8.6

Overall

8.0

Comfort

8.0

Boarding

8.1

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am
Delta
7.9
Good
8,019 reviews
Southwest
8.0
Very good
4,256 reviews

Food

7.0

Entertainment

7.5

Crew

8.6

Overall

8.0

Comfort

8.0

Boarding

8.1

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am
United Airlines
7.4
Good
9,113 reviews
Southwest
8.0
Very good
4,256 reviews

Food

7.0

Entertainment

7.5

Crew

8.6

Overall

8.0

Comfort

8.0

Boarding

8.1

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am
American Airlines
7.2
Good
11,073 reviews
Southwest
8.0
Very good
4,256 reviews

Food

7.0

Entertainment

7.5

Crew

8.6

Overall

8.0

Comfort

8.0

Boarding

8.1

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am
Spirit Airlines
6.3
Okay
8,211 reviews
Southwest
8.0
Very good
4,256 reviews

Food

7.0

Entertainment

7.5

Crew

8.6

Overall

8.0

Comfort

8.0

Boarding

8.1

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am

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 are 3 flights 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 39m.

  • How long is the flight from Boston to Louisville?

    There are many flights that can get you from Boston to Louisville in 9h 07m. Fly via Spirit Airlines or American Airlines 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 $110, 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 71% lower than the current average price of a flight leaving 3 months from now.

  • What are the cheapest airlines to fly from Boston to Louisville one-way?

    To fly one-way, consider booking your trip with Delta, which is currently one of the cheapest options available, starting at $130. American Airlines flights start at $136 while deals on United Airlines start at $147 one-way.

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

    The top 3 most reliable airlines when flying from Boston to Louisville are KLM (100%), Air France (100%) and Scandinavian Airlines (100%).

  • What are the cheapest flights from Boston to Louisville?

    Looking at all options, your cheapest flight can be booked for $256. While the most popular route (Boston Logan Intl - Louisville Intl) can be booked for $189 on average, our data indicates $394 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, 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 March is currently the most expensive (average of $258). 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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See prices for flight routes from nearby airports that may be better suited for you.
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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 December 28, 2025.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$110Average$243FlexibilityNo cancel feeOn-time65%
DeltaCheapest$246Average$392FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$278Average$385FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$286Average$402FlexibilityNo cancel feeOn-time63%
United AirlinesCheapest$289Average$405FlexibilityNo cancel feeOn-time69%

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