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$86+ Cheap flights from Louisville to Boston (SDF - BOS)

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 3/4. Fares are subject to change and may not be available on all flights or dates of travel.
SDF — BOS
Feb 28 — Mar 71
Sat 2/28
Sat 3/7
1 adult, Economy
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Find cheap flights from Louisville to Boston with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

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3. Compare prices and book

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Cheapflights Tip: The best prices from Louisville Intl to Boston Logan Intl are usually found in September or March, booked 88 days in advance, depart on a Saturday or Friday and return on a Saturday

Cheap flight deals from Louisville to Boston

Cheapest flights from Louisville to Boston
Explore the most affordable flight options available from Louisville to Boston. Find the lowest fares from popular airlines and budget airlines, with prices last updated on January 29, 2026.

This Kiwi.com deal was found by Cheapflights users on 1/27. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 2/169:30 am
SDF
-
BOS
1 stop24h 56m
Multiple Airlines
Wed 2/186:10 pm
BOS
-
SDF
1 stop20h 28m
Multiple Airlines
Deal found 1/27$174
This Priceline deal was found by Cheapflights users on 1/28. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/173:33 pm
SDF
-
BOS
1 stop8h 11m
Spirit Airlines
Tue 2/245:27 am
BOS
-
SDF
1 stop9h 11m
Spirit Airlines
Deal found 1/28$181
This Priceline deal was found by Cheapflights users on 1/28. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/123:33 pm
SDF
-
BOS
1 stop8h 26m
Spirit Airlines
Tue 3/245:40 am
BOS
-
SDF
1 stop6h 39m
Spirit Airlines
Deal found 1/28$185
This Expedia deal was found by Cheapflights users on 1/29. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/263:33 pm
SDF
-
BOS
1 stop8h 11m
Spirit Airlines
Thu 3/55:27 am
BOS
-
SDF
1 stop9h 11m
Spirit Airlines
Deal found 1/29$186
This Kiwi.com deal was found by Cheapflights users on 1/28. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/173:33 pm
SDF
-
BOS
1 stop8h 11m
Multiple Airlines
Sat 2/2112:35 pm
BOS
-
SDF
1 stop24h 51m
Multiple Airlines
Deal found 1/28$217
This Kiwi.com deal was found by Cheapflights users on 1/28. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 2/1412:00 pm
SDF
-
BOS
1 stop11h 44m
Spirit Airlines
Wed 2/186:10 pm
BOS
-
SDF
1 stop20h 28m
Spirit Airlines
Deal found 1/28$223
This Expedia deal was found by Cheapflights users on 1/29. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/103:36 pm
SDF
-
BOS
1 stop8h 21m
Spirit Airlines
Tue 3/175:40 am
BOS
-
SDF
1 stop6h 39m
Spirit Airlines
Deal found 1/29$224
This Kiwi.com deal was found by Cheapflights users on 1/28. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/239:13 pm
SDF
-
BOS
1 stop26h 46m
Multiple Airlines
Tue 3/319:35 am
BOS
-
SDF
1 stop25h 33m
Multiple Airlines
Deal found 1/28$232
This Kiwi.com deal was found by Cheapflights users on 1/28. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/21:19 pm
SDF
-
BOS
2 stops34h 25m
Spirit Airlines
Mon 3/96:10 pm
BOS
-
SDF
1 stop20h 28m
Spirit Airlines
Deal found 1/28$235
This Kiwi.com deal was found by Cheapflights users on 1/28. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/33:33 pm
SDF
-
BOS
2 stops33h 40m
Multiple Airlines
Mon 3/96:10 pm
BOS
-
SDF
1 stop20h 28m
Multiple Airlines
Deal found 1/28$236
This Expedia deal was found by Cheapflights users on 1/29. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/103:36 pm
SDF
-
BOS
1 stop8h 21m
Spirit Airlines
Tue 3/315:40 am
BOS
-
SDF
1 stop6h 39m
Spirit Airlines
Deal found 1/29$237

Find flight deals from Louisville to Boston

Discover tips and strategies to find the most affordable flight options for your journey from Louisville (SDF) to Boston (BOS). 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 January 29, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$174
(Kiwi.com)

One-way from

$86
(Expedia)

Popular in

January

Cheapest in

September

Average price

$388

Good round-trip deal

$491 or less

Good one-way deal

$312 or less
Provider with most accurate pricing for Louisville Intl-Boston Logan Intl flight deals.
Search Deals
Provider most trusted by Cheapflights users for Louisville Intl-Boston Logan Intl flights.
Search Deals
From Louisville Intl to Boston Logan Intl
Search Deals
One-way flight from Louisville Intl to Boston Logan Intl
Search Deals
Highest demand for flights based on searches. 5% potential increase in price ($19 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 0% potential price decrease ($3 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in January 2026
Search Deals
Price to beat on a round-trip flight from Louisville Intl to Boston Logan Intl.
Search Deals
Price to beat on a one-way flight from Louisville Intl to Boston Logan Intl.
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Louisville to Boston 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 January 29, 2026.
Use the filters below to find and compare flights from Louisville to Boston that are best for you.

Fly from

Louisville

Fly to

Boston

Route

Depart

Return

Price

LouisvilleBoston

SDF - BOS

SDFBOS

Louisville Intl

Tue 2/17

3:33 pm-11:44 pm

1 stop8h 11m

Boston Logan Intl

Tue 2/24

6:10 pm-12:21 pm

2 stops18h 11m

$258

LouisvilleBoston

SDF - BOS

SDFBOS

Louisville Intl

Wed 5/27

4:30 pm-7:05 pm

Nonstop2h 35m

Boston Logan Intl

Sat 5/30

12:30 pm-3:10 pm

Nonstop2h 40m

$295

LouisvilleBoston

SDF - BOS

SDFBOS

Louisville Intl

Sat 4/11

2:25 pm-4:43 pm

Nonstop2h 18m

Boston Logan Intl

Wed 4/15

10:39 am-1:20 pm

Nonstop2h 41m

$295

LouisvilleBoston

SDF - BOS

SDFBOS

Louisville Intl

Sat 2/28

9:00 am-2:29 pm

1 stop5h 29m

Boston Logan Intl

Tue 3/3

8:11 am-1:06 pm

1 stop4h 55m

$315

LouisvilleBoston

SDF - BOS

SDFBOS

Louisville Intl

Tue 5/26

6:30 am-11:46 am

1 stop5h 16m

Boston Logan Intl

Sat 5/30

8:00 am-2:47 pm

2 stops6h 47m

$320

LouisvilleBoston

SDF - BOS

SDFBOS

Louisville Intl

Sat 5/2

5:50 am-12:51 pm

2 stops7h 01m

Boston Logan Intl

Sat 5/9

7:27 pm-11:59 pm

1 stop4h 32m

$320

LouisvilleBoston

SDF - BOS

SDFBOS

Louisville Intl

Fri 5/8

12:11 pm-2:38 pm

Nonstop2h 27m

Boston Logan Intl

Tue 5/12

9:00 am-11:41 am

Nonstop2h 41m

$324

LouisvilleBoston

SDF - BOS

SDFBOS

Louisville Intl

Tue 6/16

4:30 pm-7:05 pm

Nonstop2h 35m

Boston Logan Intl

Thu 6/25

12:30 pm-3:10 pm

Nonstop2h 40m

$324

LouisvilleBoston

SDF - BOS

SDFBOS

Louisville Intl

Fri 5/8

5:45 pm-11:56 pm

1 stop6h 11m

Boston Logan Intl

Tue 5/12

12:30 pm-3:10 pm

Nonstop2h 40m

$334

LouisvilleBoston

SDF - BOS

SDFBOS

Louisville Intl

Sat 6/20

4:30 pm-7:05 pm

Nonstop2h 35m

Boston Logan Intl

Thu 6/25

5:30 am-9:51 am

1 stop4h 21m

$334

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/29

Showing 1-10 of 22 results
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Compare providers for flights from Louisville to Boston

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 Louisville to Boston in January.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
JustAirTicketPrice Accuracy-Trust Score*1 star

*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 Louisville-Boston flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Louisville-Boston flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Louisville-Boston flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Louisville-Boston 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 Louisville-Boston 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 Louisville to Boston

Have a flexible travel schedule? Discover the best time to fly to Boston from Louisville 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 Louisville to Boston

How far ahead should I book a flight from Louisville to Boston?

Use this chart to determine the optimal time to book a round-trip flight from Louisville to Boston. Price data was last updated on January 23, 2026.

Booking 88 days in advance of your planned departure date is, on average, the best time to get cheap flights from Louisville to Boston. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

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

Currently, May is the cheapest month in which you can book a flight from Louisville to Boston (average of $79). Flying from Louisville to Boston in April is currently the most expensive (average of $208). 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 SDF to BOS?

Find hourly flight availability from Louisville to Boston. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated January 29, 2026.

When flying from Louisville to Boston, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Reviews of airlines servicing Boston

Get insights into the airlines that provide service to Boston. 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 Boston. Reviews last updated January 29, 2026.
Read through reviews of airlines operating flights from Louisville to Boston, such as Southwest, Delta, and United Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.0
Very good
4,267 reviews

Crew

8.6

Overall

8.0

Entertainment

7.5

Food

7.0

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
4,267 reviews
Southwest
8.0
Very good
4,267 reviews

Crew

8.6

Overall

8.0

Entertainment

7.5

Food

7.0

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
8,126 reviews
Southwest
8.0
Very good
4,267 reviews

Crew

8.6

Overall

8.0

Entertainment

7.5

Food

7.0

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
9,215 reviews
Southwest
8.0
Very good
4,267 reviews

Crew

8.6

Overall

8.0

Entertainment

7.5

Food

7.0

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
11,207 reviews
Southwest
8.0
Very good
4,267 reviews

Crew

8.6

Overall

8.0

Entertainment

7.5

Food

7.0

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
8,395 reviews
Southwest
8.0
Very good
4,267 reviews

Crew

8.6

Overall

8.0

Entertainment

7.5

Food

7.0

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 Louisville to Boston. 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 Louisville to Boston?

    You will need to book a flight from Louisville Intl to Boston Logan Intl if you want to fly from Louisville to Boston. At least 5 different airlines have flights from Louisville Intl (SDF) to Logan Intl (BOS) on a regular basis. There are 4 flights to Boston from the Louisville airport per day. If you manage to book one that is nonstop, then you can expect the flight time from SDF to BOS to be around 2h 11m.

  • How popular is this Louisville to Boston flight route?

    This flight path from Louisville Intl to Boston Logan Intl was viewed by 9 users in the past month. Keep an eye out for changes in search interest prior to high and low season.

  • How long is the flight from Louisville to Boston?

    Airlines like Spirit Airlines, Delta, and United Airlines fly from Louisville to Boston in about 2h 35m. The time it takes to get you to your destination can typically vary by up to 5h 36m. There are 827 mi between Louisville and Boston. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

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

    According to our current data, Spirit Airlines ($174), Southwest ($216), and Delta ($217) offers the cheapest pricing from Louisville to Boston. You may be able to fly from Louisville to Boston for 51% less than the average price by searching for these airlines.

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

    One-way options have recently been found by users for as low as $117 on American Airlines. Other airlines that offer cheap prices include Delta from $137 and Southwest from $139 one-way.

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

    No one likes to see their flight delayed. When booking a flight from Louisville to Boston consider choosing Air France (100%), Scandinavian Airlines (100%) or Delta (96%) as they are the most reliable in getting you off to your destination on time.

  • What are the cheapest flights from Louisville to Boston?

    On average you can expect to pay $559 for a flight from Louisville to Boston. The cheapest flight overall is $268 while the most popular route, (Louisville Intl - Boston Logan Intl) is currently priced at $181.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Louisville to Boston 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 Louisville to Boston?

    Currently, May is the cheapest month in which you can book a flight from Louisville to Boston (average of $79). Flying from Louisville to Boston in April is currently the most expensive (average of $208). 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
Medford
Cambridge
Hampton Beach
Watertown
Seekonk
Brockton
Warwick
Seabrook
Cranston
Lincoln
Smithfield
Peabody
Quincy
York Beach
Londonderry
Swansea
Old Orchard Beach
Waltham
Lowell
Chelsea

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Louisville to Boston

See prices for flight routes from nearby airports that may be better suited for you.
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Top 5 airlines flying from Louisville to Boston

Discover the top 5 airlines that operate flights from Louisville to Boston. 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 January 29, 2026.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$174Average$216FlexibilityNo cancel feeOn-time65%
SouthwestCheapest$216Average$384FlexibilityNo cancel feeOn-time63%
DeltaCheapest$217Average$351FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$262Average$357FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$294Average$438FlexibilityNo cancel feeOn-time69%

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