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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 7/20. Fares are subject to change and may not be available on all flights or dates of travel.
BOS — SDF
Jun 17 — Jun 241
Tue 6/17
Tue 6/24
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 August, 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 June 12, 2025.

Round-trip from

$307
(American Airlines)

One-way from

$81
(Mytrip)

Popular in

May

Cheapest in

March

Average price

$376

Good round-trip deal

$336 or less

Good one-way deal

$242 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 June 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 June 12, 2025.

This American Airlines deal was found by Cheapflights users on 6/11. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/209:55 amBOS - SDF
Nonstop2h 45mAmerican Airlines
Sun 8/241:10 pmSDF - BOS
Nonstop2h 26mAmerican Airlines
Deal found 6/11$307
This FlightHub deal was found by Cheapflights users on 6/11. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 6/202:26 pmBOS - SDF
1 stop22h 03mSpirit Airlines
Sun 6/291:18 pmSDF - BOS
1 stop10h 29mSpirit Airlines
Deal found 6/11$308
This Delta deal was found by Cheapflights users on 6/11. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/2611:45 amBOS - SDF
Nonstop2h 40mDelta
Sat 9/65:40 pmSDF - BOS
Nonstop2h 36mDelta
Deal found 6/11$324
This Mytrip deal was found by Cheapflights users on 6/9. 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 6/189:47 amBOS - SDF
3 stops27h 48mMultiple Airlines
Mon 6/231:57 pmSDF - BOS
1 stop26h 44mMultiple Airlines
Deal found 6/9$327
This Southwest deal was found by Cheapflights users on 6/11. 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 8/202:50 pmBOS - SDF
1 stop5h 05mSouthwest
Sun 8/243:00 pmSDF - BOS
2 stops7h 40mSouthwest
Deal found 6/11$329
This United Airlines deal was found by Cheapflights users on 6/11. 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.
Mon 8/257:45 amBOS - SDF
1 stop14h 39mUnited Airlines
Thu 9/410:55 amSDF - BOS
1 stop13h 50mUnited Airlines
Deal found 6/11$353

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 June 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

Wed 8/20

9:55 am-12:40 pm

Nonstop2h 45m

Louisville Intl

Sun 8/24

1:10 pm-3:36 pm

Nonstop2h 26m

$307

BostonLouisville

BOS - SDF

BOSSDF

Boston Logan Intl

Fri 6/20

2:26 pm-12:29 pm

1 stop22h 03m

Louisville Intl

Sun 6/29

1:18 pm-11:47 pm

1 stop10h 29m

$308

BostonLouisville

BOS - SDF

BOSSDF

Boston Logan Intl

Tue 8/26

11:45 am-2:25 pm

Nonstop2h 40m

Louisville Intl

Wed 9/3

4:20 pm-6:59 pm

Nonstop2h 39m

$324

BostonLouisville

BOS - SDF

BOSSDF

Boston Logan Intl

Wed 6/18

9:47 am-1:35 pm

3 stops27h 48m

Louisville Intl

Mon 6/23

1:57 pm-4:41 pm

1 stop26h 44m

$327

BostonLouisville

BOS - SDF

BOSSDF

Boston Logan Intl

Wed 8/20

2:50 pm-7:55 pm

1 stop5h 05m

Louisville Intl

Sun 8/24

3:00 pm-10:40 pm

2 stops7h 40m

$329

BostonLouisville

BOS - SDF

BOSSDF

Boston Logan Intl

Mon 8/25

8:27 pm-10:02 am

1 stop13h 35m

Louisville Intl

Sat 9/6

9:55 am-2:13 pm

1 stop4h 18m

$353

BostonLouisville

BOS - SDF

BOSSDF

Boston Logan Intl

Sun 7/20

11:31 am-1:36 pm

1 stop26h 05m

$81

BostonLouisville

BOS - SDF

BOSSDF

Boston Logan Intl

Thu 6/26

4:44 pm-11:38 pm

1 stop6h 54m

$91

BostonLouisville

BOS - SDF

BOSSDF

Boston Logan Intl

Sat 7/19

5:30 am-11:00 am

1 stop5h 30m

$148

BostonLouisville

BOS - SDF

BOSSDF

Boston Logan Intl

Mon 8/11

12:50 pm-3:32 pm

Nonstop2h 42m

$163

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/11

Showing 1-10 of 13 results
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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 June 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 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 June 12, 2025.

It’s typically best to fly out from Boston to Louisville in the morning. Doing so could potentially save you 12% 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 June 8, 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 June 12, 2025.

The most flights from BOS to SDF are scheduled on a Monday (2 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (1 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 June 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
4,287 reviews

Boarding

8.2

Food

7.1

Crew

8.6

Comfort

8.0

Overall

8.0

Entertainment

7.6

Reviews

1 / 20
8.0
Excellent

John,May 2025

PVD - BNA

It’s southwest so no frills but clean, efficient and got me to my location.
Southwest
8.0
Very good
4,287 reviews
Southwest
8.0
Very good
4,287 reviews

Boarding

8.2

Food

7.1

Crew

8.6

Comfort

8.0

Overall

8.0

Entertainment

7.6

Reviews

1 / 20
8.0
Excellent

John,May 2025

PVD - BNA

It’s southwest so no frills but clean, efficient and got me to my location.
Delta
8.0
Very good
7,950 reviews
Southwest
8.0
Very good
4,287 reviews

Boarding

8.2

Food

7.1

Crew

8.6

Comfort

8.0

Overall

8.0

Entertainment

7.6

Reviews

1 / 20
8.0
Excellent

John,May 2025

PVD - BNA

It’s southwest so no frills but clean, efficient and got me to my location.
United Airlines
7.4
Good
8,790 reviews
Southwest
8.0
Very good
4,287 reviews

Boarding

8.2

Food

7.1

Crew

8.6

Comfort

8.0

Overall

8.0

Entertainment

7.6

Reviews

1 / 20
8.0
Excellent

John,May 2025

PVD - BNA

It’s southwest so no frills but clean, efficient and got me to my location.
Allegiant Air
7.3
Good
725 reviews
Southwest
8.0
Very good
4,287 reviews

Boarding

8.2

Food

7.1

Crew

8.6

Comfort

8.0

Overall

8.0

Entertainment

7.6

Reviews

1 / 20
8.0
Excellent

John,May 2025

PVD - BNA

It’s southwest so no frills but clean, efficient and got me to my location.
American Airlines
7.2
Good
10,000 reviews
Southwest
8.0
Very good
4,287 reviews

Boarding

8.2

Food

7.1

Crew

8.6

Comfort

8.0

Overall

8.0

Entertainment

7.6

Reviews

1 / 20
8.0
Excellent

John,May 2025

PVD - BNA

It’s southwest so no frills but clean, efficient and got me to my location.

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 38m.

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

    American Airlines, at $307, 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 18% 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 Allegiant Air, which is currently one of the cheapest options available, starting at $81. Spirit Airlines flights start at $91 while deals on Southwest start at $148 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 (97%) and American Airlines (96%).

  • 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 $181 on average our data indicates $332 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
Shepherdsville
Jeffersonville
Elizabethtown
Corydon
Bardstown

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Alternative routes for Boston to Louisville

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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 June 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$157Average$230FlexibilityNo cancel feeOn-time65%
DeltaCheapest$219Average$382FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$248Average$405FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$249Average$386FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$268Average$388FlexibilityNo cancel feeOn-time63%

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