HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Boston

$171+ 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 7/24. Fares are subject to change and may not be available on all flights or dates of travel.
SDF — BOS
juni 27 — juli 41
lør. 6/27
lør. 7/4
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

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

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.
Cheapflights Tip: The best prices from Louisville Intl to Boston Logan Intl are usually found in September or November, booked 69 days in advance, depart on a Saturday or Thursday 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 maj 28, 2026.

This Kiwi.com deal was found by Cheapflights users on 5/24. 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.
tor. 7/169:35 pm
SDF
-
BOS
1 stop14h 12m
Allegiant Air
lør. 7/2510:59 am
BOS
-
SDF
1 stop6h 02m
Allegiant Air
Deal found 5/24$329
This American Airlines deal was found by Cheapflights users on 5/25. 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.
ons. 8/263:21 pm
SDF
-
BOS
1 stop8h 38m
American Airlines
ons. 9/26:00 am
BOS
-
SDF
1 stop8h 51m
American Airlines
Deal found 5/25$333
This Delta deal was found by Cheapflights users on 5/27. 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.
lør. 6/275:30 pm
SDF
-
BOS
Nonstop2h 38m
Delta
lør. 7/41:59 pm
BOS
-
SDF
Nonstop2h 49m
Delta
Deal found 5/27$345
This Delta deal was found by Cheapflights users on 5/27. 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.
lør. 7/45:30 pm
SDF
-
BOS
Nonstop2h 38m
Delta
ons. 7/155:30 am
BOS
-
SDF
1 stop4h 59m
Delta
Deal found 5/27$355
This Southwest deal was found by Cheapflights users on 5/25. 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.
lør. 6/135:15 pm
SDF
-
BOS
1 stop6h 20m
Southwest
tir. 6/166:40 pm
BOS
-
SDF
1 stop4h 30m
Southwest
Deal found 5/25$363
This Kiwi.com deal was found by Cheapflights users on 5/27. 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.
ons. 8/192:56 pm
SDF
-
BOS
2 stops19h 13m
Multiple Airlines
lør. 8/228:40 am
BOS
-
SDF
1 stop11h 26m
Multiple Airlines
Deal found 5/27$364
This Delta deal was found by Cheapflights users on 5/27. 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.
ons. 7/111:40 am
SDF
-
BOS
1 stop6h 50m
Delta
tir. 7/149:26 am
BOS
-
SDF
Nonstop2h 43m
Delta
Deal found 5/27$365
This Southwest deal was found by Cheapflights users on 5/26. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
ons. 6/245:25 pm
SDF
-
BOS
1 stop6h 05m
Southwest
tir. 7/215:25 am
BOS
-
SDF
1 stop7h 00m
Southwest
Deal found 5/26$371

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 maj 28, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$329
(Kiwi.com)

One-way from

$171
(Kiwi.com)

Popular in

April

Cheapest in

September

Average price

$394

Good round-trip deal

$528 or less

Good one-way deal

$338 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. 12% potential increase in price ($58 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($11 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in May 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 maj 28, 2026.
Use the filters below to find and compare flights from Louisville to Boston that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

LouisvilleBoston

SDF - BOS

SDFBOS

Louisville Intl

tir. 7/28

12:49 pm-3:25 pm

Nonstop2h 36m

Boston Logan Intl

lør. 8/1

8:00 am-3:05 pm

1 stop7h 05m

$365

LouisvilleBoston

SDF - BOS

SDFBOS

Louisville Intl

tir. 6/30

12:46 pm-3:21 pm

Nonstop2h 35m

Boston Logan Intl

man. 7/6

9:15 am-1:39 pm

1 stop4h 24m

$394
Quickest round-trip

LouisvilleBoston

SDF - BOS

SDFBOS

Louisville Intl

tir. 7/28

12:49 pm-3:25 pm

Nonstop2h 36m

Boston Logan Intl

søn. 8/2

9:26 am-12:09 pm

Nonstop2h 43m

$394

LouisvilleBoston

SDF - BOS

SDFBOS

Louisville Intl

søn. 10/25

12:50 pm-6:45 pm

1 stop5h 55m

Boston Logan Intl

lør. 10/31

5:15 am-11:55 am

1 stop6h 40m

$414

LouisvilleBoston

SDF - BOS

SDFBOS

Louisville Intl

søn. 7/26

10:45 am-2:30 pm

1 stop3h 45m

Boston Logan Intl

lør. 8/1

6:45 pm-11:45 pm

1 stop5h 00m

$414

LouisvilleBoston

SDF - BOS

SDFBOS

Louisville Intl

man. 7/27

11:42 am-5:37 pm

1 stop5h 55m

Boston Logan Intl

lør. 8/1

8:00 am-3:05 pm

1 stop7h 05m

$414

LouisvilleBoston

SDF - BOS

SDFBOS

Louisville Intl

tor. 10/8

5:45 pm-12:58 am

1 stop7h 13m

Boston Logan Intl

tir. 10/20

5:45 pm-12:02 am

1 stop6h 17m

$414

LouisvilleBoston

SDF - BOS

SDFBOS

Louisville Intl

ons. 7/29

6:00 am-10:23 am

1 stop4h 23m

Boston Logan Intl

fre. 8/7

5:30 am-9:54 am

1 stop4h 24m

$414

LouisvilleBoston

SDF - BOS

SDFBOS

Louisville Intl

ons. 9/16

5:10 pm-9:25 pm

1 stop4h 15m

Boston Logan Intl

søn. 9/20

5:55 am-2:10 pm

2 stops8h 15m

$417

LouisvilleBoston

SDF - BOS

SDFBOS

Louisville Intl

tor. 7/16

5:05 pm-9:40 pm

1 stop4h 35m

Boston Logan Intl

tir. 7/21

5:25 am-12:05 pm

2 stops6h 40m

$417

Flights are sorted by cheapest round-trip flights first.

Deals found on 5/27

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

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 May.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
JustAirTicketPrice Accuracy-Trust Score*1 star
CheapTicketsDealPrice Accuracy1 starTrust 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 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?

Booking 68 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, September is the cheapest month in which you can book a flight from Louisville to Boston (average of $315). Flying from Louisville to Boston in April is currently the most expensive (average of $502). 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 maj 28, 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.

How much does it cost to fly round-trip from Louisville to Boston?

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 maj 28, 2026.
Read through reviews of airlines operating flights from Louisville to Boston, such as Southwest,Delta, andUnited Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Southwest
7.9
Good
4,264 reviews

Overall

7.9

Boarding

8.1

Crew

8.6

Entertainment

7.5

Food

7.0

Comfort

8.0

Reviews

1 / 20
2.0
Mediocre

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.
Southwest
7.9
Good
4,264 reviews
Southwest
7.9
Good
4,264 reviews

Overall

7.9

Boarding

8.1

Crew

8.6

Entertainment

7.5

Food

7.0

Comfort

8.0

Reviews

1 / 20
2.0
Mediocre

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.
Delta
7.9
Good
8,423 reviews
Southwest
7.9
Good
4,264 reviews

Overall

7.9

Boarding

8.1

Crew

8.6

Entertainment

7.5

Food

7.0

Comfort

8.0

Reviews

1 / 20
2.0
Mediocre

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.
United Airlines
7.4
Good
9,751 reviews
Southwest
7.9
Good
4,264 reviews

Overall

7.9

Boarding

8.1

Crew

8.6

Entertainment

7.5

Food

7.0

Comfort

8.0

Reviews

1 / 20
2.0
Mediocre

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.
American Airlines
7.1
Good
11,639 reviews
Southwest
7.9
Good
4,264 reviews

Overall

7.9

Boarding

8.1

Crew

8.6

Entertainment

7.5

Food

7.0

Comfort

8.0

Reviews

1 / 20
2.0
Mediocre

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.
Spirit Airlines
6.2
Okay
Southwest
7.9
Good
4,264 reviews

Overall

7.9

Boarding

8.1

Crew

8.6

Entertainment

7.5

Food

7.0

Comfort

8.0

Reviews

1 / 20
2.0
Mediocre

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.

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 25m.

  • How popular is this Louisville to Boston flight route?

    This flight path from Louisville Intl to Boston Logan Intl was viewed by 4 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 Delta fly from Louisville to Boston in about 2h 36m. The time it takes to get you to your destination is usually consistent. There are 827 mi between Louisville and Boston. Most flights are nonstop.

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

    According to our current data, Spirit Airlines ($191), 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 United Airlines from $153 and Delta from $166 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 Scandinavian Airlines (83%), Air France (79%) or British Airways (68%) 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 $836 for a flight from Louisville to Boston. The cheapest flight overall is $288 while the most popular route, (Louisville Intl - Boston Logan Intl) is currently priced at $345.

  • 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, September is the cheapest month in which you can book a flight from Louisville to Boston (average of $315). Flying from Louisville to Boston in April is currently the most expensive (average of $502). 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
Waltham
Cambridge
Concord
Hampton Beach
Brockton
Watertown
Seekonk
Cranston
Chelsea
Warwick
Peabody
York Beach
Londonderry
Swansea
Old Orchard Beach
Auburn
Lowell
Smithfield
Braintree
Sandwich

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.

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 maj 28, 2026.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$191Average$216FlexibilityNo cancel feeOn-time65%
SouthwestCheapest$216Average$383FlexibilityNo cancel feeOn-time63%
DeltaCheapest$217Average$382FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$261Average$378FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$294Average$438FlexibilityNo cancel feeOn-time69%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.