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$98+ 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 8/28. Fares are subject to change and may not be available on all flights or dates of travel.
BOS — SDF
Aug 3 — Aug 101
Sun 8/3
Sun 8/10
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 72 days in advance, depart on a Saturday or Wednesday and return on a Friday

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 July 29, 2025.

Round-trip from

$261
(Mytrip)

One-way from

$98
(FlightHub)

Popular in

May

Cheapest in

August

Average price

$403

Good round-trip deal

$289 or less

Good one-way deal

$130 or less
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. 3% potential increase in price ($14 potential increase over avg. RT price).
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Cheapest flight prices on average. 1% potential price decrease ($4 potential savings vs. average RT price).
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Average for round-trip flights in July 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 July 29, 2025.

This Mytrip deal was found by Cheapflights users on 7/29. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/196:00 amBOS - SDF
2 stops27h 19mSpirit Airlines
Sun 9/213:10 pmSDF - BOS
1 stop7h 33mSpirit Airlines
Deal found 7/29$261
This Southwest deal was found by Cheapflights users on 7/28. 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.
Sat 8/306:10 pmBOS - SDF
1 stop4h 15mSouthwest
Sun 8/313:20 pmSDF - BOS
1 stop7h 00mSouthwest
Deal found 7/28$266
This American Airlines deal was found by Cheapflights users on 7/29. 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.
Tue 8/199:55 amBOS - SDF
Nonstop2h 45mAmerican Airlines
Sat 8/235:47 pmSDF - BOS
1 stop4h 52mAmerican Airlines
Deal found 7/29$267
This Mytrip deal was found by Cheapflights users on 7/29. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/176:20 amBOS - SDF
2 stops26h 59mMultiple Airlines
Mon 9/2211:17 amSDF - BOS
1 stop12h 38mMultiple Airlines
Deal found 7/29$272
This Delta deal was found by Cheapflights users on 7/27. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/71:05 pmBOS - SDF
Nonstop2h 40mDelta
Sat 10/1111:20 amSDF - BOS
Nonstop2h 31mDelta
Deal found 7/27$275
This United Airlines deal was found by Cheapflights users on 7/28. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/271:00 pmBOS - SDF
1 stop4h 15mUnited Airlines
Wed 9/37:20 amSDF - BOS
2 stops6h 53mUnited Airlines
Deal found 7/28$300

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 July 29, 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 9/3

6:10 am-9:19 am

2 stops27h 09m

Louisville Intl

Sun 9/7

3:10 pm-10:43 pm

1 stop7h 33m

$261

BostonLouisville

BOS - SDF

BOSSDF

Boston Logan Intl

Sat 8/30

6:10 pm-10:25 pm

1 stop4h 15m

Louisville Intl

Sun 8/31

3:20 pm-10:20 pm

1 stop7h 00m

$266

BostonLouisville

BOS - SDF

BOSSDF

Boston Logan Intl

Tue 8/19

9:55 am-12:40 pm

Nonstop2h 45m

Louisville Intl

Sat 8/23

5:47 pm-10:39 pm

1 stop4h 52m

$267

BostonLouisville

BOS - SDF

BOSSDF

Boston Logan Intl

Wed 9/17

6:20 am-9:19 am

2 stops26h 59m

Louisville Intl

Mon 9/22

11:17 am-11:55 pm

1 stop12h 38m

$272

BostonLouisville

BOS - SDF

BOSSDF

Boston Logan Intl

Tue 10/7

1:05 pm-3:45 pm

Nonstop2h 40m

Louisville Intl

Sat 10/11

11:20 am-1:51 pm

Nonstop2h 31m

$275

BostonLouisville

BOS - SDF

BOSSDF

Boston Logan Intl

Wed 8/27

1:00 pm-5:15 pm

1 stop4h 15m

Louisville Intl

Wed 9/3

7:20 am-2:13 pm

2 stops6h 53m

$300

BostonLouisville

BOS - SDF

BOSSDF

Boston Logan Intl

Thu 8/28

6:30 am-1:51 pm

1 stop7h 21m

$98

BostonLouisville

BOS - SDF

BOSSDF

Boston Logan Intl

Wed 8/20

12:50 pm-3:32 pm

Nonstop2h 42m

$109

BostonLouisville

BOS - SDF

BOSSDF

Boston Logan Intl

Wed 8/20

1:00 pm-5:15 pm

1 stop4h 15m

$119

BostonLouisville

BOS - SDF

BOSSDF

Boston Logan Intl

Thu 8/28

3:37 pm-10:04 am

2 stops18h 27m

$156

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/27

Showing 1-10 of 12 results
1
2

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 July 25, 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 72 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 July 29, 2025.

It’s typically best to fly out from Boston to Louisville in the morning. Doing so could potentially save you 10% 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 July 27, 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. Sunday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.

Weekly flight availability from Boston to Louisville

Explore weekly flight availability from Boston to Louisville. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated July 29, 2025.

The most flights from BOS to SDF are scheduled on a Monday (2 on average). You will have fewer flight options on Thursday, which is when the least amount of flights are scheduled (1 on average).

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 July 29, 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
4,238 reviews

Overall

8.0

Boarding

8.1

Comfort

8.0

Food

7.0

Crew

8.6

Entertainment

7.5

Reviews

1 / 20
8.0
Excellent

Gina,Jul 2025

LAS - DEN

We experienced bad weather, which turned our 1.5 hour flight from Las Vegas to Denver, into 3.5. The pilot and crew kept us updated and explained that we had to circle and or possibly redirect to another airport. After circling for sometime, we were able to land smoothly in Denver. Thank you to all the flight crew, tower control, and all who got us to our destination safely.
Southwest
8.0
Very good
4,238 reviews
Southwest
8.0
Very good
4,238 reviews

Overall

8.0

Boarding

8.1

Comfort

8.0

Food

7.0

Crew

8.6

Entertainment

7.5

Reviews

1 / 20
8.0
Excellent

Gina,Jul 2025

LAS - DEN

We experienced bad weather, which turned our 1.5 hour flight from Las Vegas to Denver, into 3.5. The pilot and crew kept us updated and explained that we had to circle and or possibly redirect to another airport. After circling for sometime, we were able to land smoothly in Denver. Thank you to all the flight crew, tower control, and all who got us to our destination safely.
Delta
8.0
Very good
7,977 reviews
Southwest
8.0
Very good
4,238 reviews

Overall

8.0

Boarding

8.1

Comfort

8.0

Food

7.0

Crew

8.6

Entertainment

7.5

Reviews

1 / 20
8.0
Excellent

Gina,Jul 2025

LAS - DEN

We experienced bad weather, which turned our 1.5 hour flight from Las Vegas to Denver, into 3.5. The pilot and crew kept us updated and explained that we had to circle and or possibly redirect to another airport. After circling for sometime, we were able to land smoothly in Denver. Thank you to all the flight crew, tower control, and all who got us to our destination safely.
United Airlines
7.4
Good
8,899 reviews
Southwest
8.0
Very good
4,238 reviews

Overall

8.0

Boarding

8.1

Comfort

8.0

Food

7.0

Crew

8.6

Entertainment

7.5

Reviews

1 / 20
8.0
Excellent

Gina,Jul 2025

LAS - DEN

We experienced bad weather, which turned our 1.5 hour flight from Las Vegas to Denver, into 3.5. The pilot and crew kept us updated and explained that we had to circle and or possibly redirect to another airport. After circling for sometime, we were able to land smoothly in Denver. Thank you to all the flight crew, tower control, and all who got us to our destination safely.
American Airlines
7.2
Good
10,000 reviews
Southwest
8.0
Very good
4,238 reviews

Overall

8.0

Boarding

8.1

Comfort

8.0

Food

7.0

Crew

8.6

Entertainment

7.5

Reviews

1 / 20
8.0
Excellent

Gina,Jul 2025

LAS - DEN

We experienced bad weather, which turned our 1.5 hour flight from Las Vegas to Denver, into 3.5. The pilot and crew kept us updated and explained that we had to circle and or possibly redirect to another airport. After circling for sometime, we were able to land smoothly in Denver. Thank you to all the flight crew, tower control, and all who got us to our destination safely.
Spirit Airlines
6.3
Okay
8,040 reviews
Southwest
8.0
Very good
4,238 reviews

Overall

8.0

Boarding

8.1

Comfort

8.0

Food

7.0

Crew

8.6

Entertainment

7.5

Reviews

1 / 20
8.0
Excellent

Gina,Jul 2025

LAS - DEN

We experienced bad weather, which turned our 1.5 hour flight from Las Vegas to Denver, into 3.5. The pilot and crew kept us updated and explained that we had to circle and or possibly redirect to another airport. After circling for sometime, we were able to land smoothly in Denver. Thank you to all the flight crew, tower control, and all who got us to our destination safely.

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 35m.

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

    Spirit Airlines, at $261, was found to be the cheapest airline from Boston to Louisville.Alternate airlines to your destination round-trip include Southwest and American Airlines. Spirit Airlines is priced at 30% 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 Spirit Airlines, which is currently one of the cheapest options available, starting at $98. Delta flights start at $109 while deals on United Airlines start at $119 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 Delta (94%), Air France (93%) and Korean Air (89%).

  • What are the cheapest flights from Boston to Louisville?

    Looking at all options, your cheapest flight can be booked for $130. While the most popular route (Boston Logan Intl - Louisville Intl) can be booked for $197 on average our data indicates $253 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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Alternative routes for Boston to Louisville

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 July 29, 2025.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$157Average$230FlexibilityNo cancel feeOn-time65%
DeltaCheapest$228Average$381FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$249Average$380FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$253Average$419FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$268Average$396FlexibilityNo cancel feeOn-time63%

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