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$85+ 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 6/11. Fares are subject to change and may not be available on all flights or dates of travel.
BOS — SDF
May 17 — May 241
Sat 5/17
Sat 5/24
1 adult, Economy
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Cheapflights Tip: The best prices from Boston Logan Intl to Louisville Intl are usually found in March or January, booked 37 days in advance, depart on a Saturday or Tuesday 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 May 12, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

Priceline
3 stars

Round-trip from

$295
(American Airlines)

One-way from

$85
(Mytrip)

Popular in

May

Cheapest in

March

Average price

$455

Good round-trip deal

$335 or less

Good one-way deal

$248 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. 4% potential increase in price ($18 potential increase over avg. RT price).
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Cheapest flight prices on average. 1% potential price decrease ($7 potential savings vs. average RT price).
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Average for round-trip flights in May 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 May 12, 2025.

This American Airlines 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/295:29 pmBOS - SDF
1 stop5h 41mAmerican Airlines
Tue 8/58:20 amSDF - BOS
1 stop5h 38mAmerican Airlines
Deal found 5/12$295
This Booking.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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/205:45 amBOS - SDF
1 stop6h 18mSpirit Airlines
Thu 5/2911:23 amSDF - BOS
1 stop12h 24mSpirit Airlines
Deal found 5/12$298
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 6/1212:59 pmBOS - SDF
Nonstop2h 39mDelta
Sat 6/144:19 pmSDF - BOS
Nonstop2h 40mDelta
Deal found 5/10$299
This United 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/295:30 amBOS - SDF
1 stop4h 46mUnited Airlines
Sat 5/316:00 amSDF - BOS
2 stops7h 28mUnited Airlines
Deal found 5/11$300
This Mytrip 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/174:40 pmBOS - SDF
1 stop25h 09mMultiple Airlines
Sat 9/209:06 amSDF - BOS
1 stop6h 29mMultiple Airlines
Deal found 5/12$306
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 8/205:40 amBOS - SDF
1 stop6h 55mSouthwest
Sun 8/245:45 amSDF - BOS
1 stop4h 00mSouthwest
Deal found 5/11$319

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 12, 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

Tue 7/29

5:29 pm-11:10 pm

1 stop5h 41m

Louisville Intl

Tue 8/5

8:20 am-1:58 pm

1 stop5h 38m

$295

BostonLouisville

BOS - SDF

BOSSDF

Boston Logan Intl

Thu 6/12

12:59 pm-3:38 pm

Nonstop2h 39m

Louisville Intl

Sat 6/14

4:19 pm-6:59 pm

Nonstop2h 40m

$299

BostonLouisville

BOS - SDF

BOSSDF

Boston Logan Intl

Thu 5/29

5:30 am-10:16 am

1 stop4h 46m

Louisville Intl

Sat 5/31

6:00 am-1:28 pm

2 stops7h 28m

$300

BostonLouisville

BOS - SDF

BOSSDF

Boston Logan Intl

Thu 9/25

6:00 am-9:32 am

2 stops27h 32m

Louisville Intl

Sun 9/28

6:09 pm-10:12 pm

3 stops28h 03m

$303

BostonLouisville

BOS - SDF

BOSSDF

Boston Logan Intl

Wed 9/17

4:40 pm-5:49 pm

1 stop25h 09m

Louisville Intl

Sat 9/20

9:06 am-3:35 pm

1 stop6h 29m

$306

BostonLouisville

BOS - SDF

BOSSDF

Boston Logan Intl

Wed 8/20

5:40 am-12:35 pm

1 stop6h 55m

Louisville Intl

Sun 8/24

5:45 am-9:45 am

1 stop4h 00m

$319

BostonLouisville

BOS - SDF

BOSSDF

Boston Logan Intl

Wed 6/11

5:45 am-10:22 pm

2 stops16h 37m

$85

BostonLouisville

BOS - SDF

BOSSDF

Boston Logan Intl

Thu 5/22

11:31 am-2:09 pm

1 stop26h 38m

$89

BostonLouisville

BOS - SDF

BOSSDF

Boston Logan Intl

Fri 5/30

2:25 pm-3:52 pm

1 stop25h 27m

$128

BostonLouisville

BOS - SDF

BOSSDF

Boston Logan Intl

Sat 5/24

2:35 pm-5:13 pm

Nonstop2h 38m

$138

Flights are sorted by cheapest round-trip flights first.

Deals found on 5/11

Showing 1-10 of 13 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 May.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*2 stars
PricelinePrice Accuracy2 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 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 Priceline the most. Priceline 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 May 9, 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 37 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 May 12, 2025.

It’s typically best to fly out from Boston to Louisville in the morning. Doing so could potentially save you 13% 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 May 11, 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 mornings 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 May 12, 2025.

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

Rainfall in Louisville by month

Plan your trip to Louisville by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Louisville ranges from 3.1 - 5.3 inches per month. May is typically the wettest month, when rainfall can reach 5.3 in. September is typically the driest time to visit Louisville when rainfall is around 3.1 in.

Temperature in Louisville by month

Plan your trip to Louisville by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Louisville, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 78.8 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 35.6 F).

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 12, 2025.
Read reviews from past customers who have flown Southwest, Delta and United Airlines from Boston to Louisville. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.0
Very good
4,290 reviews

Boarding

8.2

Food

7.1

Comfort

8.0

Entertainment

7.6

Crew

8.6

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Gina,Apr 2025

LAS - DEN

Good, the crew was friendly and helpful. The pilot had great skills in keeping the plane stable through rough turbulence. Smooth landing, too! Thank you!
Southwest
8.0
Very good
4,290 reviews
Southwest
8.0
Very good
4,290 reviews

Boarding

8.2

Food

7.1

Comfort

8.0

Entertainment

7.6

Crew

8.6

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Gina,Apr 2025

LAS - DEN

Good, the crew was friendly and helpful. The pilot had great skills in keeping the plane stable through rough turbulence. Smooth landing, too! Thank you!
Delta
8.0
Very good
7,950 reviews
Southwest
8.0
Very good
4,290 reviews

Boarding

8.2

Food

7.1

Comfort

8.0

Entertainment

7.6

Crew

8.6

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Gina,Apr 2025

LAS - DEN

Good, the crew was friendly and helpful. The pilot had great skills in keeping the plane stable through rough turbulence. Smooth landing, too! Thank you!
United Airlines
7.4
Good
8,724 reviews
Southwest
8.0
Very good
4,290 reviews

Boarding

8.2

Food

7.1

Comfort

8.0

Entertainment

7.6

Crew

8.6

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Gina,Apr 2025

LAS - DEN

Good, the crew was friendly and helpful. The pilot had great skills in keeping the plane stable through rough turbulence. Smooth landing, too! Thank you!
Allegiant Air
7.3
Good
734 reviews
Southwest
8.0
Very good
4,290 reviews

Boarding

8.2

Food

7.1

Comfort

8.0

Entertainment

7.6

Crew

8.6

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Gina,Apr 2025

LAS - DEN

Good, the crew was friendly and helpful. The pilot had great skills in keeping the plane stable through rough turbulence. Smooth landing, too! Thank you!
American Airlines
7.2
Good
10,000 reviews
Southwest
8.0
Very good
4,290 reviews

Boarding

8.2

Food

7.1

Comfort

8.0

Entertainment

7.6

Crew

8.6

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Gina,Apr 2025

LAS - DEN

Good, the crew was friendly and helpful. The pilot had great skills in keeping the plane stable through rough turbulence. Smooth landing, too! Thank you!

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 2 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 38m.

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

    American Airlines, at $295, was found to be the cheapest airline from Boston to Louisville.Alternate airlines to your destination round-trip include Spirit Airlines and Delta. American Airlines is priced at 22% 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 $85. Allegiant Air flights start at $91 while deals on Delta start at $138 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 Envoy Air (100%), Delta (98%) and American Airlines (98%).

  • What are the cheapest flights from Boston to Louisville?

    Looking at all options, your cheapest flight can be booked for $161. While the most popular route (Boston Logan Intl - Louisville Intl) can be booked for $213 on average our data indicates $354 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 Boston?

Book flights to Boston if you plan to visit one of these locations
Jeffersonville
Corydon
Elizabethtown
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 May 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$157Average$231FlexibilityNo cancel feeOn-time65%
DeltaCheapest$210Average$385FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$248Average$428FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$249Average$388FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$268Average$385FlexibilityNo cancel feeOn-time63%

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