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$98+ 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 5/18. Fares are subject to change and may not be available on all flights or dates of travel.
SDF — BOS
May 17 — May 241
Sun 5/17
Sun 5/24
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 November, booked 69 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 April 17, 2026.

This Kiwi.com deal was found by Cheapflights users on 4/12. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/1410:33 am
SDF
-
BOS
1 stop13h 21m
Multiple Airlines
Tue 5/195:45 am
BOS
-
SDF
1 stop29h 49m
Multiple Airlines
Deal found 4/12$275
This Kiwi.com deal was found by Cheapflights users on 4/12. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/1510:33 am
SDF
-
BOS
1 stop13h 21m
Multiple Airlines
Tue 5/195:45 am
BOS
-
SDF
1 stop29h 49m
Multiple Airlines
Deal found 4/12$276
This American Airlines deal was found by Cheapflights users on 4/12. 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 5/124:27 pm
SDF
-
BOS
1 stop7h 32m
American Airlines
Tue 5/198:04 am
BOS
-
SDF
1 stop7h 53m
American Airlines
Deal found 4/12$293
This Kiwi.com deal was found by Cheapflights users on 4/12. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/1510:33 am
SDF
-
BOS
1 stop13h 21m
Multiple Airlines
Mon 5/185:45 am
BOS
-
SDF
1 stop13h 13m
Multiple Airlines
Deal found 4/12$294
This Kiwi.com deal was found by Cheapflights users on 4/12. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/1410:33 am
SDF
-
BOS
1 stop13h 21m
Multiple Airlines
Mon 5/185:45 am
BOS
-
SDF
1 stop13h 13m
Multiple Airlines
Deal found 4/12$298
This Kiwi.com deal was found by Cheapflights users on 4/12. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/1410:33 am
SDF
-
BOS
1 stop13h 21m
Spirit Airlines
Wed 5/205:45 am
BOS
-
SDF
1 stop27h 43m
Spirit Airlines
Deal found 4/12$300
This Kiwi.com deal was found by Cheapflights users on 4/12. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/1510:33 am
SDF
-
BOS
1 stop13h 21m
Spirit Airlines
Wed 5/205:45 am
BOS
-
SDF
1 stop27h 43m
Spirit Airlines
Deal found 4/12$301
This Kiwi.com deal was found by Cheapflights users on 4/12. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/142:27 pm
SDF
-
BOS
2 stops31h 15m
Multiple Airlines
Wed 5/205:45 am
BOS
-
SDF
1 stop27h 43m
Multiple Airlines
Deal found 4/12$305
This Kiwi.com deal was found by Cheapflights users on 4/12. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/1410:33 am
SDF
-
BOS
1 stop13h 21m
Spirit Airlines
Sun 5/175:45 am
BOS
-
SDF
1 stop27h 43m
Spirit Airlines
Deal found 4/12$307

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 April 17, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$293
(American Airlines)

One-way from

$98
(Kiwi.com)

Popular in

March

Cheapest in

September

Average price

$441

Good round-trip deal

$485 or less

Good one-way deal

$373 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. 10% potential increase in price ($46 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($7 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in April 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 April 17, 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

Fri 7/10

6:05 pm-12:10 am

1 stop6h 05m

Boston Logan Intl

Tue 7/14

3:45 pm-8:25 pm

1 stop4h 40m

$384
Quickest round-trip

LouisvilleBoston

SDF - BOS

SDFBOS

Louisville Intl

Mon 6/29

12:46 pm-3:21 pm

Nonstop2h 35m

Boston Logan Intl

Sun 7/5

9:28 am-12:06 pm

Nonstop2h 38m

$393

LouisvilleBoston

SDF - BOS

SDFBOS

Louisville Intl

Fri 5/29

5:25 pm-11:55 pm

2 stops6h 30m

Boston Logan Intl

Mon 6/1

1:20 pm-10:10 pm

2 stops8h 50m

$404

LouisvilleBoston

SDF - BOS

SDFBOS

Louisville Intl

Thu 6/25

5:59 pm-11:27 pm

1 stop5h 28m

Boston Logan Intl

Sat 6/27

7:00 am-1:06 pm

1 stop6h 06m

$413

LouisvilleBoston

SDF - BOS

SDFBOS

Louisville Intl

Fri 6/12

6:00 am-12:23 pm

1 stop6h 23m

Boston Logan Intl

Sun 6/14

5:30 am-9:55 am

1 stop4h 25m

$413

LouisvilleBoston

SDF - BOS

SDFBOS

Louisville Intl

Fri 6/5

5:05 pm-9:40 pm

1 stop4h 35m

Boston Logan Intl

Mon 6/15

7:50 pm-12:25 am

1 stop4h 35m

$413

LouisvilleBoston

SDF - BOS

SDFBOS

Louisville Intl

Thu 6/4

5:30 pm-10:25 pm

1 stop4h 55m

Boston Logan Intl

Sun 6/7

5:30 am-9:55 am

1 stop4h 25m

$413

LouisvilleBoston

SDF - BOS

SDFBOS

Louisville Intl

Thu 7/9

6:40 am-3:15 pm

2 stops8h 35m

Boston Logan Intl

Mon 7/13

1:20 pm-10:25 pm

2 stops9h 05m

$423

LouisvilleBoston

SDF - BOS

SDFBOS

Louisville Intl

Tue 5/5

7:00 am-3:55 pm

2 stops8h 55m

Boston Logan Intl

Sat 5/9

9:00 am-5:45 pm

2 stops8h 45m

$426

LouisvilleBoston

SDF - BOS

SDFBOS

Louisville Intl

Tue 5/5

5:54 am-11:59 pm

1 stop18h 05m

Boston Logan Intl

Tue 5/12

5:45 am-7:42 pm

1 stop13h 57m

$433

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/12

Showing 1-10 of 19 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 April.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
JustAirTicketPrice Accuracy-Trust Score*1 star
CheapTicketsDealPrice Accuracy3 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 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 April 10, 2026.

Booking 69 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 $324). Flying from Louisville to Boston in March is currently the most expensive (average of $453). 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 April 17, 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 April 17, 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
8.0
Very good
4,328 reviews

Boarding

8.1

Overall

8.0

Crew

8.6

Comfort

8.0

Entertainment

7.5

Food

7.0

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
8.0
Very good
4,328 reviews
Southwest
8.0
Very good
4,328 reviews

Boarding

8.1

Overall

8.0

Crew

8.6

Comfort

8.0

Entertainment

7.5

Food

7.0

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
8,406 reviews
Southwest
8.0
Very good
4,328 reviews

Boarding

8.1

Overall

8.0

Crew

8.6

Comfort

8.0

Entertainment

7.5

Food

7.0

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
9,602 reviews
Southwest
8.0
Very good
4,328 reviews

Boarding

8.1

Overall

8.0

Crew

8.6

Comfort

8.0

Entertainment

7.5

Food

7.0

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
11,593 reviews
Southwest
8.0
Very good
4,328 reviews

Boarding

8.1

Overall

8.0

Crew

8.6

Comfort

8.0

Entertainment

7.5

Food

7.0

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
6.3
Okay
8,617 reviews
Southwest
8.0
Very good
4,328 reviews

Boarding

8.1

Overall

8.0

Crew

8.6

Comfort

8.0

Entertainment

7.5

Food

7.0

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 6 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 Southwest and Delta 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 3h 30m. 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 ($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 50% 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 $161 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 Republic Airways (92%), KLM (83%) or American Airlines (83%) 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 $652 for a flight from Louisville to Boston. The cheapest flight overall is $278 while the most popular route, (Louisville Intl - Boston Logan Intl) is currently priced at $226.

  • 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 $324). Flying from Louisville to Boston in March is currently the most expensive (average of $453). 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
Concord
Hampton Beach
Watertown
Brockton
Seekonk
Cranston
Chelsea
Seabrook
Warwick
Peabody
York Beach
Londonderry
Swansea
Old Orchard Beach
Lincoln
Quincy
Waltham
Lowell

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 April 17, 2026.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$191Average$216FlexibilityNo cancel feeOn-time65%
SouthwestCheapest$216Average$385FlexibilityNo cancel feeOn-time63%
DeltaCheapest$217Average$375FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$261Average$367FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$294Average$372FlexibilityNo cancel feeOn-time69%

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