Cheap flights from Boston to Louisville from $123

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Boston to Louisville departing on 8/25. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

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Find the cheapest flights from Boston to Louisville

Cheap round-trip flights

Enter your travel dates to find the best prices.
Delta Logo
5:45 am - 9:54 am
BOS
-
SDF
4h 09m
1 stop
Delta Logo
12:50 pm - 3:31 pm
SDF
-
BOS
2h 41mnonstop
$397Delta
Wed, Sep 23 - Tue, Sep 29
Southwest Logo
5:35 am - 3:15 pm
BOS
-
SDF
9h 40m
2 stops
Southwest Logo
6:45 am - 3:50 pm
SDF
-
BOS
9h 05m
2 stops
$398Southwest
Tue, Aug 11 - Sat, Aug 15
American Airlines Logo
6:00 am - 2:02 pm
BOS
-
SDF
8h 02m
1 stop
American Airlines Logo
6:00 am - 10:11 am
SDF
-
BOS
4h 11m
1 stop
$403American Airlines
Wed, Jul 1 - Mon, Jul 6
Delta Logo
3:00 pm - 8:59 pm
BOS
-
SDF
5h 59m
1 stop
Delta Logo
3:45 pm - 6:22 pm
SDF
-
BOS
2h 37mnonstop
$404Delta
Mon, Jul 20 - Sat, Jul 25
Delta Logo
9:26 am - 12:09 pm
BOS
-
SDF
2h 43mnonstop
Delta Logo
5:49 pm - 8:18 am
SDF
-
BOS
14h 29m
1 stop
$405Delta
Tue, Jul 21 - Fri, Jul 24
Delta Logo
9:28 am - 12:06 pm
BOS
-
SDF
2h 38mnonstop
Delta Logo
12:46 pm - 3:21 pm
SDF
-
BOS
2h 35mnonstop
$406Delta
Wed, Jun 24 - Tue, Jun 30
Southwest Logo
5:00 am - 1:05 pm
BOS
-
SDF
8h 05m
2 stops
Southwest Logo
10:40 am - 4:25 pm
SDF
-
BOS
5h 45m
1 stop
$408Southwest
Thu, Aug 13 - Sun, Aug 16
Southwest Logo
5:00 pm - 11:10 pm
BOS
-
SDF
6h 10m
1 stop
Southwest Logo
4:15 pm - 11:20 pm
SDF
-
BOS
7h 05m
2 stops
$409Southwest
Tue, Jun 30 - Wed, Jul 1
Allegiant Air Logo
11:34 am - 12:12 pm
BOS
-
SDF
24h 38m
2 stops
Allegiant Air Logo
9:35 pm - 11:47 am
SDF
-
BOS
14h 12m
1 stop
$411Allegiant Air
Fri, Jul 3 - Thu, Jul 9
Southwest Logo
5:00 pm - 11:15 pm
BOS
-
SDF
6h 15m
1 stop
Southwest Logo
5:05 pm - 9:40 pm
SDF
-
BOS
4h 35m
1 stop
$412Southwest
Wed, Jul 8 - Fri, Jul 10

Delta flights from Boston to Louisville

Our best Delta deals on Boston to Louisville flight tickets
Delta
Jul 15
BOS9:26 amBoston Logan Intl
2h 43m
SDF12:09 pmLouisville Intl
Jul 22
SDF1:02 pmLouisville Intl
4h 58m
1 stop
BOS6:00 pmBoston Logan Intl
$397
Delta
Jul 20
BOS3:00 pmBoston Logan Intl
5h 59m
1 stop
SDF8:59 pmLouisville Intl
Jul 25
SDF3:45 pmLouisville Intl
2h 37m
BOS6:22 pmBoston Logan Intl
$404
Delta
Jul 21
BOS9:26 amBoston Logan Intl
2h 43m
SDF12:09 pmLouisville Intl
Jul 24
SDF5:49 pmLouisville Intl
14h 29m
1 stop
BOS8:18 amBoston Logan Intl
$405

United Airlines flights from Boston to Louisville

Our best United Airlines deals on Boston to Louisville flight tickets
United Airlines
Jul 4
BOS8:00 amBoston Logan Intl
9h 03m
2 stops
SDF5:03 pmLouisville Intl
Jul 11
SDF5:50 pmLouisville Intl
5h 31m
1 stop
BOS11:21 pmBoston Logan Intl
$450
United Airlines
Jul 30
BOS12:30 pmBoston Logan Intl
6h 26m
1 stop
SDF6:56 pmLouisville Intl
Aug 2
SDF6:30 amLouisville Intl
4h 46m
1 stop
BOS11:16 amBoston Logan Intl
$453
United Airlines
Jul 21
BOS9:25 amBoston Logan Intl
5h 12m
1 stop
SDF2:37 pmLouisville Intl
Jul 25
SDF6:00 amLouisville Intl
7h 32m
2 stops
BOS1:32 pmBoston Logan Intl
$460

momondo 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, momondo users made 832,500 searches. Data last updated June 2, 2026.
Use the filters below to find and compare flights from Boston to Louisville that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

BostonLouisville

BOS - SDF

BOSSDF

Boston Logan Intl

Wed 9/23

5:45 am-9:54 am

1 stop4h 09m

Louisville Intl

Tue 9/29

12:50 pm-3:31 pm

Nonstop2h 41m

$397

BostonLouisville

BOS - SDF

BOSSDF

Boston Logan Intl

Tue 8/11

5:35 am-3:15 pm

2 stops9h 40m

Louisville Intl

Sat 8/15

6:45 am-3:50 pm

2 stops9h 05m

$398

BostonLouisville

BOS - SDF

BOSSDF

Boston Logan Intl

Wed 7/1

6:00 am-2:02 pm

1 stop8h 02m

Louisville Intl

Mon 7/6

6:00 am-10:11 am

1 stop4h 11m

$403

BostonLouisville

BOS - SDF

BOSSDF

Boston Logan Intl

Mon 7/20

3:00 pm-8:59 pm

1 stop5h 59m

Louisville Intl

Sat 7/25

3:45 pm-6:22 pm

Nonstop2h 37m

$404

BostonLouisville

BOS - SDF

BOSSDF

Boston Logan Intl

Tue 7/21

9:26 am-12:09 pm

Nonstop2h 43m

Louisville Intl

Fri 7/24

5:49 pm-8:18 am

1 stop14h 29m

$405
Quickest round-trip

BostonLouisville

BOS - SDF

BOSSDF

Boston Logan Intl

Wed 6/24

9:28 am-12:06 pm

Nonstop2h 38m

Louisville Intl

Tue 6/30

12:46 pm-3:21 pm

Nonstop2h 35m

$406

BostonLouisville

BOS - SDF

BOSSDF

Boston Logan Intl

Thu 8/13

5:00 am-1:05 pm

2 stops8h 05m

Louisville Intl

Sun 8/16

10:40 am-4:25 pm

1 stop5h 45m

$408

BostonLouisville

BOS - SDF

BOSSDF

Boston Logan Intl

Tue 6/30

5:00 pm-11:10 pm

1 stop6h 10m

Louisville Intl

Wed 7/1

4:15 pm-11:20 pm

2 stops7h 05m

$409

BostonLouisville

BOS - SDF

BOSSDF

Boston Logan Intl

Fri 7/3

11:34 am-12:12 pm

2 stops24h 38m

Louisville Intl

Thu 7/9

9:35 pm-11:47 am

1 stop14h 12m

$411

BostonLouisville

BOS - SDF

BOSSDF

Boston Logan Intl

Wed 7/8

5:00 pm-11:15 pm

1 stop6h 15m

Louisville Intl

Fri 7/10

5:05 pm-9:40 pm

1 stop4h 35m

$412

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Louisville from

How to get the cheapest flight ticket from Boston to Louisville

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the typical price of a round-trip flight between Boston and Louisville?

What is the cheapest month to fly to Louisville?

If you are unable to visit Louisville during the month of August, then departing from Boston during the month December is also very affordable. Most momondo users find prices during this month for around $380.

What is the cheapest day to depart on your flight to Louisville?

On average, the least expensive day to fly to Louisville from Boston is on a Saturday. momondo users have found tickets for Saturday departures for as low as $358. However, this price may fluctuate depending on the airline, the season, and holidays. Flights from Boston to Louisville on a Monday will generally be more expensive and average around $465. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.

What is the cheapest time of day to depart on your flight to Louisville?

Our data shows that the cheapest Boston to Louisville flights are usually those with departure times in the afternoon. Our users have found flights to Louisville in the afternoon for as low as $346. In the morning is when there is more demand to fly to Louisville, so prices are often more expensive at around $425 per ticket.

What is the cheapest Boston Logan Intl to Louisville Intl flight route?

Fly from Boston Logan Intl to Louisville Intl for the best Boston Logan Intl - Louisville Intl flight prices

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

You are more likely to see cheaper flights to Louisville from Boston when booking weeks ahead of your departure date. In general, you can expect to find flights to Louisville for around $427 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Louisville from Boston for as low as $275 on momondo.

What cabin class options are available on Boston to Louisville flights?

There are 4 cabin classes available to choose from on Boston to Louisville flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on Boston to Louisville flights?

You could potentially save up to 7% on your flight if you consider stops on a Boston to Louisville flight.

How have Boston to Louisville flight prices changed over time?

As of June 2026, prices for Boston to Louisville flights are approximately 46% more expensive when compared to flights at the same time last year.

When to book flights from Boston to Louisville

Are you open to changing your travel dates? Check out the ideal times to fly from Boston to Louisville according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Boston to Louisville (BOS to SDF) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Boston to Louisville

Best Price Found

$288

Fastest flight time

2h 37m

Direct flights

Every day

Airports in Louisville

1 airport
The best one-way flight to Louisville from Boston in the past 72 hours is $288. The best round-trip flight deal from Boston to Louisville found on momondo in the last 72 hours is $443.
The fastest flight from Boston to Louisville takes 2h 37m
Direct flights go from Boston to Louisville every day.
There is 1 airport in Louisville. From Boston there are direct flights to Louisville Intl (SDF).

Frequently asked questions about flying from Boston to Louisville

  • How far is Boston Logan Intl to Louisville Intl by plane?

    The straight-line distance from Boston Logan Intl to Louisville Intl is 822.9 mi. 2h 37m is a normal flight duration for this route.

  • When did momondo last update prices for flights from Boston Logan Intl Airport to Louisville Intl Airport?

    Prices for flights from Boston Logan Intl Airport to Louisville Intl Airport are updated daily.

  • How many operators does momondo search for flights from Boston Logan Intl Airport to Louisville Intl Airport?

  • How old do you have to be to fly from Boston Logan Intl Airport to Louisville Intl Airport?

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Boston Logan Intl Airport to Louisville Intl Airport.

  • What documentation or ID do you need to fly to Louisville Intl Airport?

    The travel and health documents you'll need for your trip to Louisville Intl Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Louisville Intl Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

  • What is the most popular plane model from Boston to Louisville?

  • What is the most popular airline from Boston to Louisville?

Best airlines flying from Boston to Louisville

Compare and see reviews for airlines that fly from Boston to Louisville with momondo
Airline
Rating
Free Cancellation
Price
DeltaPriceFrom $271Free CancellationRating
7.9
8,398 reviews
Search Delta flights
American AirlinesPriceFrom $275Free CancellationRating
7.1
11,640 reviews
Search American Airlines flights
SouthwestPriceFrom $335Free CancellationRating
8.0
4,258 reviews
Search Southwest flights
United AirlinesPriceFrom $349Free CancellationRating
7.4
9,778 reviews
Search United Airlines flights
  • Delta Flights From Boston to Louisville

    Across 5 Delta flights from Boston to Louisville this week, the average price was $441, with the best Delta deals starting from $271 round-trip. 8,398 users have rated Delta on momondo, with an average score of 7.9/10.

  • American Airlines Flights From Boston to Louisville

    American Airlines (7.1/10 from 11,640 reviews) operates around 5 flights from Boston to Louisville in any given week. The average American Airlines airfare for this route is around $420, with deals from around $275 rare but found on momondo. Referenced prices are for round-trip Boston to Louisville flight searches in the last 72 hours.

Traveling to a place near Louisville?

Book flights to Louisville if you plan to visit one of these locations
French Lick
Elizabethtown
Jeffersonville
West Baden Springs
Bardstown
New Albany
Shepherdsville
Brandenburg
Corydon
Elizabeth
Charlestown
Georgetown
Springfield

Why use momondo?

Why should I use momondo to find a flight deal from Boston to Louisville?

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Boston to Louisville for you.

Can I find flights from Boston to Louisville with flexible booking policies on momondo?

Yes. momondo allows you to filter the results for Boston to Louisville flights to just show those with flexible booking policies.

How can momondo help me find flights from Boston to Louisville?

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Louisville from Boston.

I’m not ready to book a flight from Boston to Louisville right now. Can momondo alert me if prices change?

If you are not ready to book a flight from Boston to Louisville now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Louisville and let you know when they change.

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1 adult
Thu 7/2
Thu 7/9

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