BOS - SDF

$104 Find Cheap Flights from Boston to Louisville

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Boston to Louisville departing on 5/27. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
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KAYAK searches hundreds of travel sites at once for deals on flights to Louisville

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Boston to Louisville, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Boston to Louisville, as well as popular online travel agencies
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Cheap Flights from Boston to Louisville

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Boston to Louisville that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.

Recent round-trip flight deals from Boston to Louisville

KAYAK's recommended round-trip deals from the most popular airlines that fly from Boston to Louisville.
Discover the best prices for you by selecting your travel dates on KAYAK.
Spirit Airlines Logo
5:45 am - 12:03 pmBOS-SDF
6h 18m1 stop
Spirit Airlines Logo
11:23 am - 11:47 pmSDF-BOS
12h 24m1 stop
$184Spirit Airlines
Find Deal
Tue, Jun 3 - Thu, Jun 5
Spirit Airlines Logo
5:45 am - 12:03 pmBOS-SDF
6h 18m1 stop
Spirit Airlines Logo
5:03 am - 3:37 pmSDF-BOS
10h 34m1 stop
$188Spirit Airlines
Find Deal
Tue, Jun 10 - Wed, Jun 18
Delta Logo
12:57 pm - 3:39 pmBOS-SDF
2h 42mnonstop
Delta Logo
4:19 pm - 6:54 pmSDF-BOS
2h 35mnonstop
$275Delta
Find Deal
Tue, Aug 5 - Wed, Aug 13
American Airlines Logo
6:35 am - 4:47 pmBOS-SDF
10h 12m1 stop
American Airlines Logo
3:31 pm - 5:58 pmSDF-BOS
2h 27mnonstop
$280American Airlines
Find Deal
Sat, May 24 - Sat, May 31
American Airlines Logo
6:35 am - 4:47 pmBOS-SDF
10h 12m1 stop
American Airlines Logo
7:25 am - 1:56 pmSDF-BOS
6h 31m1 stop
$290American Airlines
Find Deal
Sat, May 24 - Sat, May 31
Delta Logo
11:30 am - 2:10 pmBOS-SDF
2h 40mnonstop
Delta Logo
2:55 pm - 5:31 pmSDF-BOS
2h 36mnonstop
$299Delta
Find Deal
Thu, May 29 - Thu, Jun 5
United Airlines Logo
2:46 pm - 10:14 pmBOS-SDF
7h 28m2 stops
United Airlines Logo
2:50 pm - 6:56 pmSDF-BOS
4h 06m1 stop
$300United Airlines
Find Deal
Tue, Aug 5 - Tue, Aug 12
Southwest Logo
5:45 am - 11:20 amBOS-SDF
5h 35m1 stop
Southwest Logo
5:40 pm - 12:25 amSDF-BOS
6h 45m1 stop
$319Southwest
Find Deal
Thu, May 29 - Thu, Jun 5
Southwest Logo
6:00 am - 12:25 pmBOS-SDF
6h 25m1 stop
Southwest Logo
5:30 am - 1:00 pmSDF-BOS
7h 30m2 stops
$324Southwest
Find Deal
Wed, Sep 10 - Mon, Sep 15
United Airlines Logo
9:30 am - 2:40 pmBOS-SDF
5h 10m1 stop
United Airlines Logo
6:30 am - 1:40 pmSDF-BOS
7h 10m1 stop
$365United Airlines
Find Deal
Sat, Jul 12 - Wed, Jul 16
Expert advice

Expert advice for your flight from Boston to Louisville

 
Snippets provided in this section are AI-generated based on a summarization of KAYAK-commissioned articles. The articles are presented as-is, for general informational purposes only, and may not be up-to-date. The opinions contained in the articles are original to the author and reflect their authentic experience, which may vary significantly from the experience of others.
KAYAK teamed up with top travel experts to share the best tips for your journey.
Airlines
American Airlines

Consider Main Cabin Extra for early boarding and complimentary drinks on short flights.


Use American Airlines’ app for inflight entertainment; seatback screens are being removed.

Delta

Delta offers free Wi-Fi for SkyMiles members on domestic flights.


Choose Comfort Plus for extra legroom; it offers up to three more inches than Main Cabin.

Read more about Deltaby Stefanie Waldek
Our travel experts
Harriet Baskas

Harriet Baskas

Expert on American Airlines

Harriet Baskas

Harriet Baskas

Harriet is an award-winning journalist who is happiest in an airport or an unusual museum. Her stories about airports, air travel, and the business of travel have appeared on NBC News, CNBC, USA TODAY, The Points Guy and other outlets. She is the creator of the StuckatTheAirport.com blog and the author of nine books. When not out on the road or exploring the latest airport amenities, she’s home in Seattle getting ready for the next adventure.

Read more
Stefanie Waldek

Stefanie Waldek

Expert on Delta

Stefanie Waldek

Stefanie Waldek

Stefanie Waldek is a freelance space, travel, and design writer based in Saratoga Springs, NY. Her words have appeared in Space.com, Travel + Leisure, Condé Nast Traveler, Architectural Digest, and House Beautiful, among other publications. An expert in aviation and expedition cruising, Stefanie is frequently up in the air or on the sea, likely en route to Antarctica or the Arctic.

Read more
Useful Info

KAYAK's insights & trends for Boston to Louisville flights

Get data-powered insights and trends into flights from Boston to Louisville to help you find the cheapest flights, the best time to fly and much more.

Find cheap flights to Louisville
Find cheap flights to Louisville

Planning a trip from Boston to Louisville? KAYAK’s data-powered insights will help you find cheap flights. Learn the best time to fly, how early to book your ticket, and other tips to secure great prices.

What’s the cheapest day of the week to fly from Boston to Louisville?

The average price of all round-trip flights from Boston to Louisville clicked on KAYAK for each day over the last 12 months.

If your flying dates are flexible, you should consider flying to Louisville on a Saturday, as we generally find the cheapest rates on that day for this route. On the other hand, Sunday is the most expensive day to fly from Boston to Louisville. For your return ticket, we recommend flying on a Saturday and avoiding Sundays for the best deals.

What is the cheapest month to fly from Boston to Louisville?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Boston to Louisville, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Boston to Louisville is March, where tickets cost $342 (return) on average. On the other hand, the most expensive months are July and May, where the average cost of round-trip tickets is $432 and $428 respectively.

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

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Boston to Louisville, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below average price on the flight from Boston to Louisville, you should book around 4 weeks before departure. For the absolute cheapest price, our data suggests you should book 11 weeks before departure.

Good to know

Low seasonJanuary
High seasonMay
Cheapest flight$104
Best time to beat the crowds with an average 9% drop in price.
Most popular time to fly with an average 12% increase in price.
Flight from Boston to Louisville

When to book flights from Boston to Louisville

Are your dates flexible? Find out the best times to travel from Boston to Louisville based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from Boston to Louisville

  • Which form of transportation from Boston's city center to Boston Logan International Airport will cost travelers the least money?

    The most affordable option is usually taking the subway and bus operated by the Massachusetts Bay Transportation Authority (MBTA). The Blue Line subway connects downtown Boston to the airport, and you can transfer to the free Silver Line SL1 bus at the Airport Station. The cost of an MBTA subway or bus fare is typically lower than other modes of transportation.

  • Which airline routes offer the cheapest flight options between Boston (BOS) and Louisville (SDF)?

    For travelers on a tight budget, a connecting flight from Boston to Louisville may be less expensive than a direct ticket. Many airlines, including American Airlines, Delta Air Lines, Southwest Airlines, and United Airlines, offer connecting flights on this route. These airlines' respective layover cities are Dallas, Detroit, Nashville, or Chicago.

  • Which airlines operate flights from Louisville to Boston that accept pets?

    Pets are allowed on board a variety of carriers when flying from Boston to Louisville, including American, Delta Air Lines, Southwest Airlines, and United Airlines. It is advisable to buy your ticket as soon as you can, though, as each aircraft only accepts a certain number of animals. Your pet should not weigh more than 20 lbs overall in the carrier. The pet carrier will also be regarded as a carry-on item. These airlines allow just a single animal per traveler, except in certain circumstances.

  • Which airlines provide reasonable luggage policies on flights from Boston (BOS) to Louisville (SDF)?

    For flights leaving from Boston to Louisville, a number of carriers, including Delta Air Lines, Southwest Airlines, and United Airlines, have loosened their baggage restrictions. These airlines stand out for not charging customers for carry-on bags up to 22 lbs. In addition, they provide discounted pricing for checked bags weighing under fifty pounds.

  • What is the cheapest flight from Boston to Louisville?

    In the last 3 days, the lowest price for a flight from Boston to Louisville was $104 for a one-way ticket and $184 for a round-trip.

  • Do I need a passport to fly between Boston and Louisville?

    No, a passport isn't needed to fly from Boston to Louisville. However, local authorities might ask for an official ID.

  • Which airlines offer Wi-Fi service onboard planes from Boston to Louisville?

    American Airlines, Delta, and JetBlue offer inflight Wi-Fi service on the Boston to Louisville flight route.

  • Which aircraft models fly most regularly from Boston to Louisville?

    The Embraer 175 is the aircraft model that flies most regularly on the Boston to Louisville flight route.

  • Which airline alliances offer flights from Boston to Louisville?

    oneworld, and SkyTeam are the airline alliances operating flights between Boston and Louisville, with SkyTeam being the most commonly used for this route.

  • On which days can I fly direct from Boston to Louisville?

    There are nonstop flights from Boston to Louisville on a daily basis.

  • Which is the best airline for flights from Boston to Louisville, Delta or Southwest?

    The two airlines most popular with KAYAK users for flights from Boston to Louisville are Delta and Southwest. With an average price for the route of $387 and an overall rating of 8.0, Delta is the most popular choice. Southwest is also a great choice for the route, with an average price of $377 and an overall rating of 8.0.

  • How does KAYAK find such low prices on flights from Boston to Louisville?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Boston to Louisville.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Boston to Louisville?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Louisville from Boston is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Boston to Louisville?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Louisville with an airline and back to Boston with another airline. Booking your flights between Boston and SDF can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Boston to Louisville?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Louisville from Boston up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

KAYAK’s top tips for finding a cheap flight from Boston to Louisville

  • Looking for a cheap flight? 25% of our users found flights on this route for $196 or less one-way and $337 or less round-trip.
  • When flying from Boston (BOS) to Louisville, the vast majority of business travelers opt to arrive via Louisville Muhammad Ali International Airport (SDF). This is because SDF airport offers various ground transportation options, including taxis, rideshares, rental cars, and public transportation. This accessibility makes it convenient for business travelers to reach their final destinations or attend meetings smoothly.
  • Consider using American Airlines, Delta Air Lines, Southwest Airlines, or United Airlines if you want an enhanced journey from Boston to Louisville. When making reservations or checking in with these airlines, customers can use a particular bidding procedure to ask for an upgrade from their initial class, like business or economy.
  • Consider flying with American Airlines, Delta Air Lines, Southwest Airlines, or United Airlines if you want entertainment on your trip from Boston to Louisville. The free in-flight Wi-Fi is available to customers flying with one of these airlines, and they can use it to stream live their preferred TV shows, and children's cartoons, or listen to their favorite music.
  • When flying from Boston to Louisville (SDF), the majority of ecologically conscious passengers prefer to depart via Boston Logan International Airport (BOS). This preference is a result of the great advancements the airport has made in the usage of renewable energy sources. Solar panel arrays have been installed by the BOS to generate clean electricity. BOS has also installed geothermal energy systems for heating and cooling to lessen its dependency on fossil fuels.
  • If you want to travel from Boston to Louisville in the morning, you might want to think about staying the night close to BOS Airport. Due to its proximity to BOS Airport, the Hilton Boston Logan Airport makes for a convenient overnight lodging option. All hotel guests are also entitled to a free breakfast.

Prefer to fly direct from Boston to Louisville?

Find which airlines fly direct from Boston Logan Intl Airport to Louisville Intl Airport, which days they fly and book direct flights.

Direct departures

Boston Logan Intl to Louisville Intl

Monday

American Airlines, Delta

American Airlines, Delta

Tuesday

American Airlines, Delta

American Airlines, Delta

Wednesday

American Airlines, Delta

American Airlines, Delta

Thursday

American Airlines, Delta

American Airlines, Delta

Friday

American Airlines, Delta

American Airlines, Delta

Saturday

American Airlines, Delta, KLM

American Airlines, Delta, +1 more

Sunday

American Airlines, Delta

American Airlines, Delta

See more direct flights

Direct returns

Louisville Intl to Boston Logan Intl

Monday

American Airlines, Delta, KLM, +2 more

American Airlines, Delta, +3 more

Tuesday

American Airlines, Delta, KLM, +2 more

American Airlines, Delta, +3 more

Wednesday

American Airlines, Delta, KLM, +2 more

American Airlines, Delta, +3 more

Thursday

American Airlines, Delta, KLM, +2 more

American Airlines, Delta, +3 more

Friday

American Airlines, Delta, KLM, +1 more

American Airlines, Delta, +2 more

Saturday

American Airlines, Delta, KLM, +2 more

American Airlines, Delta, +3 more

Sunday

American Airlines, Delta, KLM, +1 more

American Airlines, Delta, +2 more

See more direct flights
See more direct flights

Top 5 airlines serving from Boston to Louisville

 
See real verified KAYAK customer reviews for airlines flying from Boston to Louisville. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Boston to Louisville? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
8.0
SouthwestOverall score based on 4294 reviews
7.6Entertainment
8.0Comfort
8.2Boarding
8.6Crew
7.1Food
Airline reviews

It is southwest seat was ok. Not the most comfortable seat

8.0 ExcellentJohn, Apr 2025PVD - FLL
Read more Southwest reviews

It is southwest seat was ok. Not the most comfortable seat

I’ve always loved Southwest. No issues at all. I was flying standby and the gate agent was extremely friendly and helpful. Boarding was smooth and I was able to get a window seat in the emergency exit row. Crew was fantastic! They were very professional and accommodating. We had to divert from our destination due to weather but the flight crew kept everyone at ease and informed us of all pertinent information. Excellent flight

The price of the tickets isn't matching the flight experience. No matter how long the flight is, you're only getting pretzels. The flight attendants looked unkept and over it.

Plz don't take away free bags and free seating

The seats were a bit cramped and worn, but otherwise okay.

I would have liked to arrive on time - not 5 hours late!

After a 3 hour layover in Denver my flight was delayed over 5 hours! No explanation; no assistance; no offer to provide compensation; no one at Southwest was willing to offer any assistance. 8 hours in the Denver airport - ridiculous!

It was a perfect flight in all aspects! Both legs!

Only one drink pass through the cabin for a 4 hour flight. Quite rough and bumpy landing.

Boarding process, crew were good. But the seats were so uncomfortable that was all I could focus on. I literally had to sit forward so that all 3 of us could fit in row. I will try to avoid Southwest in the future for any flights over 60 minutes.

Delta is my preferred airline. I've traveled with them for years. On time in most cases, good communication, easy to use app. Most planes are pretty nice. I was on a CRJ 700/900 however, which was pretty badly aged inside and needed a refresh. No infotainment, unreliable wifi, best to download before boarding or bring a book. Food choices are really just snacks on this flight, nice variety but about what you'd expect. Great staff and prompt in departure and early arrival too. Overall quite satisfied.

Crew was friendly Love the entertainment in the seat head rest.

Delta flight was on time, seats were comfortable, and crew was nice.

This had nothing to do with Delta… The flights were on time and flawless. The service was excellent. We purchased seats in (aisle/middle) comfort plus since this was a cross country flight. Unfortunately, the woman seated at the window was 300+ pounds and, as might be expected, covered up about a third of the middle seat also. there was absolutely nothing that Delta could have done about that… I just don’t know what the answer should be. If you purchase a seat, you should should be able to use the entire seat and not just the portion that someone else is not sitting/oozing in. Disappointing…there should be something that could be done….I'm just not sure what solution could be.

Delayed take-off. Very small plane so very scary with lots of bumps during the flight. Would never fly Delta on short flights in small 80 seaters plane again! Felt relieved when landed.

The worst part was I was NOT allowed in the lounge even though I was holding a first class ticket and have a premium American Express card. I have flown Business or First Class with many airlines. Delta is the ONLY one who does not extend this courtesy to anyone except people who hold the very expensive American Express card. As a result, I won’t fly Delta if I have any other choice.

A little bumpy ride . No food was being provided due the the turbulence. That was ok it was a short flight to my standards.

Simply outstanding. Their new lounge for Delta One customers is a cut above the rest.

The Dekta Rep that checked us in was great. She's very personable, pleasant, and can tell she enjoys her job.

The plane was old with small storage areas that had problems closing/latching and not enough storage for everyone, and worn, damaged seats. Service was great but feel a little unsafe on such well used planes.

A bit rush for transit. Food and entertainment are not available

Multiple delays and not straight answer from the United team

Stewardess spilled orange juice on my clothes/seat no help no apology just threw napkins at me to clean the mess up. Not Happy.

Smooth flight. Boarding was chaotic. Could not hear the gate agent over the intercom. People were lined up in the wrong lines. Groups one and two were told to board through line one and group 3 through line 2. All very confusing. Once in the air, the flight was smooth. There was no entertainment option on this aircraft, even though it was a larger aircraft.

The plane pushed back from the gate on time. However, it stopped on the ramp, and we waited for over 20 minutes before the aircraft pulled back to the gate. Apparently, something of importance had to be removed from the aircraft by the gate agent. I found this to be odd. The delay was not significant, but I felt that whatever was on the aircraft that had to be taken off, should’ve been done before we pushed back from the gate.

Electric plugs didn't work. Entertainment system wasn't working

The design of the light switch on the arm rest is ridiculous.

Smooth boarding process. Early departure, smooth flight, early arrival. The entertainment package has very good recent movie options. The flight crew were friendly and professional.

leg space better than expected. two washrooms for one plane isn't enough.

The gate attendant let me walk right by her with a bag too big for the overhead compartment

Several delays. Next flight was worse. Did not arrive home until 2am PT

Very helpful ground crew after an earlier flight delay and being rebooked on a different flight.

Everything about the flight was lovely…We left early, arrived early, cabin crew were efficient and helpful. Flight was easy and most pleasant.

First world problems, but still… We were seated in first class and asked for a cocktail on a very short, 50 minute flight. After our drink order was taken, a half hour went by, and we noticed that every other person in the small plane had been served except for us. We got up to ask about it, the drinks finally came, then were taken away three minutes later since the flight was so short. Really strange situation, on the other hand, we were in Utah.

We missed our flight. The boarding pass had the wrong gate and by the time we received the text from Kayak, our flight was already gone. I’ll never use Kayak again and will go direct to the airlines in the future.

Boarding took forever, the plane was cramped and cold, and the seatbelt song came on constantly throughout the red eye flight with a loud pre-recorded message playing each time

Cabin felt crammed Snacks are lame But crew was super efficient getting us out on time despite delay

Took off on time and successfully avoided weather that looked to be a problem along the way

There were five broken seats on the plane. The crew was very rude in telling people they had to get off the plane and get a flight the next day. No call for volunteers, but telling people they had to get off. One woman was flying with her elderly mother and daughter and was told she had to leave or all three had to leave. Fortunately, a volunteer offered to stay. The situation was handled poorly.

The flight to Tokyo AA61 took off about two hours late, but then had to turn back. By that time the crew had to be replaced. Then they kept promising to take off in an hour, then in 3, then switch to the next day.

Not having it be changed after we bought the flight tickets from a direct flight getting in at a reasonable time to a connecting flight red eye of 9 hours, so that we would lose our 35 dollars in nonrefundable insurance would've been great! Our country really does need low-cost carrier options, but this type of "service" ain't it. Fortunately, had a little better success with them flying to and from San Juan PR last month at least.

All was good expecting the seats need a bit of cushion. Besides that I can’t complain.

You get what you pay for, and the flights went smoothly. There’s no reclining chairs, no screens, And there isn’t always wifi, but the plane was clean and staff was friendly and the takeoff/landing were smooth.

The only positive is that the flight made it both ways. Getting charged for every little thing after the cost of the ticket itself is comical, considering how the plane and services are as bottom-tier as possible. The self check-in kiosks are useless. It’s nice to think that you can print your boarding pass, tag your checked bag, and then just drop it off. But no, they still make you go through the line once you finish- what’s the point of the self check-in then? Any questions for the staff seem like the biggest inconvenience and were met with condescending responses. This was my first and now last time ever flying with Spirit. After all the extra costs, subpar plane and staff, I see no value. I’d rather drive the 13 hours than give Spirit another dime.

The flight was fine however what started as a reasonable priced ticket could have become an overpriced ticket with additional charge for carry on as well as checked bag $79 per bag per person each way. Additional charge for choosing one’s seat, additional charge for beverage and snack, we were on what was described as a new plane yet there were no audio/visual on the jet. A bare bones service but not at a bare bones price. Will think twice before flying Spirit again. 😕

Flight was delayed a bit, but that was expected (and updated), so really not bad at all for the price. Could’ve used one less email asking me to upgrade my seat; otherwise no significant complaints

I love Spirit. New aircraft, great cabin service, the airfares are low cost which helps me visit my hospitalized daughter anytime I can without paying a fortune.

Flight was 2hours late they had no crew or the pilot.

I paid for streaming wifi and the connection was poor.

We had an 8 hr delay so it was not good

Everything you need to know for your flight from Boston to Louisville

Information on your arrival and departure airports

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