$97+ 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 5/21. Fares are subject to change and may not be available on all flights or dates of travel.
SDF — BOS
May 29 — Jun 51
Round-trip
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
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 Friday and return on a Saturday
Cheap flight deals from Louisville to Boston
Cheapest
Best
Last-minute
One-way
Cheapest flights from Louisville to BostonExplore 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 29, 2026.
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 29, 2026.
This American Airlines deal was found by Cheapflights users on 4/27. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/266:10 am
SDF
- BOS
1 stop8h 32m
American Airlines
Wed 9/26:00 am
BOS
- SDF
1 stop8h 51m
American Airlines
Deal found 4/27![American Airlines logo]()
$333
This Delta deal was found by Cheapflights users on 4/27. 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.
Sat 6/135:30 pm
SDF
- BOS
Nonstop2h 38m
Delta
Tue 6/239:28 am
BOS
- SDF
Nonstop2h 38m
Delta
Deal found 4/27![Delta logo]()
$335
This Kiwi.com deal was found by Cheapflights users on 4/27. 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 5/2510:33 am
SDF
- BOS
2 stops45h 16m
Multiple Airlines
Fri 6/126:29 pm
BOS
- SDF
1 stop17h 47m
Multiple Airlines
Deal found 4/27![Multiple Airlines logo]()
$336
This Kiwi.com deal was found by Cheapflights users on 4/27. 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.
Wed 5/2712:24 pm
SDF
- BOS
1 stop11h 30m
Multiple Airlines
Wed 6/35:45 am
BOS
- SDF
1 stop27h 43m
Multiple Airlines
Deal found 4/27![Multiple Airlines logo]()
$338
This Kiwi.com deal was found by Cheapflights users on 4/26. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/278:48 pm
SDF
- BOS
1 stop27h 10m
Multiple Airlines
Tue 8/49:14 am
BOS
- SDF
2 stops23h 22m
Multiple Airlines
Deal found 4/26![Multiple Airlines logo]()
$340
This Kiwi.com deal was found by Cheapflights users on 4/28. 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.
Fri 5/2210:33 am
SDF
- BOS
1 stop13h 21m
Multiple Airlines
Tue 5/265:45 am
BOS
- SDF
1 stop29h 49m
Multiple Airlines
Deal found 4/28![Multiple Airlines logo]()
$341
This Kiwi.com deal was found by Cheapflights users on 4/25. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/278:48 pm
SDF
- BOS
1 stop27h 10m
Multiple Airlines
Mon 8/36:00 am
BOS
- SDF
1 stop13h 58m
Multiple Airlines
Deal found 4/25![Multiple Airlines logo]()
$342
This Kiwi.com deal was found by Cheapflights users on 4/29. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/3110:33 am
SDF
- BOS
2 stops21h 16m
Multiple Airlines
Fri 6/58:44 am
BOS
- SDF
1 stop23h 52m
Multiple Airlines
Deal found 4/29![Multiple Airlines logo]()
$343
This Delta deal was found by Cheapflights users on 4/28. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/307:05 am
SDF
- BOS
2 stops9h 59m
Delta
Sat 7/1112:15 pm
BOS
- SDF
Nonstop2h 47m
Delta
Deal found 4/28![Delta logo]()
$344
Best flights from Louisville to BostonDiscover carefully curated flight deals from Louisville to Boston that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated April 29, 2026.
Discover carefully curated flight deals from Louisville to Boston that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated April 29, 2026.
This United Airlines deal was found by Cheapflights users on 4/27. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/246:00 pm
SDF
- BOS
1 stop5h 13m
United Airlines
Sat 10/316:33 pm
BOS
- SDF
1 stop5h 32m
United Airlines
Deal found 4/27![United Airlines logo]()
$355
This Delta deal was found by Cheapflights users on 4/26. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 6/612:45 pm
SDF
- BOS
Nonstop2h 26m
Delta
Sun 6/149:28 am
BOS
- SDF
Nonstop2h 38m
Delta
Deal found 4/26![Delta logo]()
$364
This Southwest deal was found by Cheapflights users on 4/24. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/257:05 am
SDF
- BOS
1 stop6h 30m
Southwest
Thu 8/273:00 pm
BOS
- SDF
1 stop5h 30m
Southwest
Deal found 4/24![Southwest logo]()
$384
This Delta deal was found by Cheapflights users on 4/28. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/2712:49 pm
SDF
- BOS
Nonstop2h 36m
Delta
Tue 8/49:26 am
BOS
- SDF
Nonstop2h 43m
Delta
Deal found 4/28![Delta logo]()
$364
This Southwest deal was found by Cheapflights users on 4/24. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/247:05 am
SDF
- BOS
2 stops6h 40m
Southwest
Sat 10/315:40 pm
BOS
- SDF
1 stop4h 40m
Southwest
Deal found 4/24![Southwest logo]()
$389
This Delta deal was found by Cheapflights users on 4/28. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/183:45 pm
SDF
- BOS
Nonstop2h 37m
Delta
Sat 7/255:30 am
BOS
- SDF
1 stop4h 24m
Delta
Deal found 4/28![Delta logo]()
$374
This Southwest deal was found by Cheapflights users on 4/24. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/1711:20 am
SDF
- BOS
1 stop3h 55m
Southwest
Tue 10/2010:35 am
BOS
- SDF
2 stops9h 55m
Southwest
Deal found 4/24![Southwest logo]()
$389
This Delta deal was found by Cheapflights users on 4/25. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/301:55 pm
SDF
- BOS
1 stop5h 29m
Delta
Thu 6/49:55 am
BOS
- SDF
Nonstop2h 40m
Delta
Deal found 4/25![Delta logo]()
$403
This Southwest deal was found by Cheapflights users on 4/29. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/83:00 pm
SDF
- BOS
2 stops8h 25m
Southwest
Thu 6/117:55 am
BOS
- SDF
2 stops9h 00m
Southwest
Deal found 4/29![Southwest logo]()
$404
This Delta deal was found by Cheapflights users on 4/26. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 6/125:26 pm
SDF
- BOS
1 stop6h 28m
Delta
Sun 6/149:28 am
BOS
- SDF
Nonstop2h 38m
Delta
Deal found 4/26![Delta logo]()
$403
This Delta deal was found by Cheapflights users on 4/24. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/171:00 pm
SDF
- BOS
Nonstop2h 30m
Delta
Tue 10/209:30 am
BOS
- SDF
Nonstop2h 48m
Delta
Deal found 4/24![Delta logo]()
$407
This Delta deal was found by Cheapflights users on 4/29. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/15:26 pm
SDF
- BOS
1 stop6h 28m
Delta
Mon 7/134:00 pm
BOS
- SDF
1 stop4h 59m
Delta
Deal found 4/29![Delta logo]()
$413
Last-minute flights from Louisville to BostonDiscover last-minute flight deals from Louisville to Boston. Data last updated April 29, 2026 and is based on user searches.
Discover last-minute flight deals from Louisville to Boston. Data last updated April 29, 2026 and is based on user searches.
This Kiwi.com deal was found by Cheapflights users on 4/28. 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.
Fri 5/2210:33 am
SDF
- BOS
1 stop13h 21m
Multiple Airlines
Tue 5/265:45 am
BOS
- SDF
1 stop29h 49m
Multiple Airlines
Deal found 4/28![Multiple Airlines logo]()
$341
This Kiwi.com deal was found by Cheapflights users on 4/27. 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 5/2510:33 am
SDF
- BOS
2 stops45h 16m
Multiple Airlines
Fri 6/126:29 pm
BOS
- SDF
1 stop17h 47m
Multiple Airlines
Deal found 4/27![Multiple Airlines logo]()
$336
This Kiwi.com deal was found by Cheapflights users on 4/27. 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.
Wed 5/2712:24 pm
SDF
- BOS
1 stop11h 30m
Multiple Airlines
Wed 6/35:45 am
BOS
- SDF
1 stop27h 43m
Multiple Airlines
Deal found 4/27![Multiple Airlines logo]()
$338
This American Airlines deal was found by Cheapflights users on 4/24. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/276:01 am
SDF
- BOS
1 stop5h 15m
American Airlines
Sat 5/301:08 pm
BOS
- SDF
Nonstop2h 38m
American Airlines
Deal found 4/24![American Airlines logo]()
$345
This American Airlines deal was found by Cheapflights users on 4/27. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/275:00 am
SDF
- BOS
1 stop6h 11m
American Airlines
Wed 6/32:00 pm
BOS
- SDF
Nonstop2h 37m
American Airlines
Deal found 4/27![American Airlines logo]()
$353
This Kiwi.com deal was found by Cheapflights users on 4/29. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/2910:33 am
SDF
- BOS
2 stops14h 51m
Multiple Airlines
Sat 6/610:54 am
BOS
- SDF
1 stop6h 03m
Multiple Airlines
Deal found 4/29![Multiple Airlines logo]()
$354
This Kiwi.com deal was found by Cheapflights users on 4/29. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/3110:33 am
SDF
- BOS
2 stops21h 16m
Multiple Airlines
Fri 6/58:44 am
BOS
- SDF
1 stop23h 52m
Multiple Airlines
Deal found 4/29![Multiple Airlines logo]()
$343
This Kiwi.com deal was found by Cheapflights users on 4/29. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/318:59 pm
SDF
- BOS
1 stop13h 38m
Multiple Airlines
Thu 6/46:00 am
BOS
- SDF
2 stops27h 28m
Multiple Airlines
Deal found 4/29![Multiple Airlines logo]()
$351
One-way flights from Louisville to BostonSearch for one-way flight options from Louisville to Boston. Find affordable one-way fares based on user searches. Data last updated April 29, 2026.
Search for one-way flight options from Louisville to Boston. Find affordable one-way fares based on user searches. Data last updated April 29, 2026.
This Expedia deal was found by Cheapflights users on 4/25. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/2110:33 am
SDF
- BOS
1 stop13h 21m
Spirit Airlines
Deal found 4/25![Spirit Airlines logo]()
$97
This Kiwi.com deal was found by Cheapflights users on 4/27. 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.
Wed 6/2412:20 pm
SDF
- BOS
1 stop11h 38m
Multiple Airlines
Deal found 4/27![Multiple Airlines logo]()
$117
This Kiwi.com deal was found by Cheapflights users on 4/27. 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 6/229:15 pm
SDF
- BOS
1 stop26h 43m
Multiple Airlines
Deal found 4/27![Multiple Airlines logo]()
$122
This Kiwi.com deal was found by Cheapflights users on 4/28. 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 5/117:48 pm
SDF
- BOS
2 stops29h 36m
Multiple Airlines
Deal found 4/28![Multiple Airlines logo]()
$126
This Kiwi.com deal was found by Cheapflights users on 4/25. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/208:48 pm
SDF
- BOS
1 stop27h 10m
Multiple Airlines
Deal found 4/25![Multiple Airlines logo]()
$127
This Kiwi.com deal was found by Cheapflights users on 4/28. 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.
Sun 10/257:42 pm
SDF
- BOS
1 stop16h 27m
Allegiant Air
Deal found 4/28![Allegiant Air logo]()
$128
This Kiwi.com deal was found by Cheapflights users on 4/25. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/187:48 pm
SDF
- BOS
2 stops37h 24m
Multiple Airlines
Deal found 4/25![Multiple Airlines logo]()
$134
This Kiwi.com deal was found by Cheapflights users on 4/28. 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.
Sun 5/1710:33 am
SDF
- BOS
2 stops46h 11m
Multiple Airlines
Deal found 4/28![Multiple Airlines logo]()
$135
This Kiwi.com deal was found by Cheapflights users on 4/28. 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.
Thu 5/286:55 pm
SDF
- BOS
2 stops16h 11m
Multiple Airlines
Deal found 4/28![Multiple Airlines logo]()
$139
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 29, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $335 (Delta) |
One-way from | $97 (Expedia) |
Popular in | April |
Cheapest in | September |
Average price | $495 |
Good round-trip deal | $494 or less |
Good one-way deal | $288 or less |
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 29, 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
Cheapest round-trip
LouisvilleBoston
SDF - BOS
SDFBOS
Louisville Intl
Sat 10/24
6:00 pm-11:13 pm
1 stop5h 13m
Boston Logan Intl
Sat 10/31
6:33 pm-12:05 am
1 stop5h 32m
$355
Quickest round-trip
LouisvilleBoston
SDF - BOS
SDFBOS
Louisville Intl
Sat 6/6
12:45 pm-3:11 pm
Nonstop2h 26m
Boston Logan Intl
Sun 6/14
9:28 am-12:06 pm
Nonstop2h 38m
$364
LouisvilleBoston
SDF - BOS
SDFBOS
Louisville Intl
Mon 7/27
12:49 pm-3:25 pm
Nonstop2h 36m
Boston Logan Intl
Tue 8/4
9:26 am-12:09 pm
Nonstop2h 43m
$364
LouisvilleBoston
SDF - BOS
SDFBOS
Louisville Intl
Sat 7/18
3:45 pm-6:22 pm
Nonstop2h 37m
Boston Logan Intl
Sat 7/25
5:30 am-9:54 am
1 stop4h 24m
$374
LouisvilleBoston
SDF - BOS
SDFBOS
Louisville Intl
Tue 8/25
7:05 am-1:35 pm
1 stop6h 30m
Boston Logan Intl
Thu 8/27
3:00 pm-8:30 pm
1 stop5h 30m
$384
LouisvilleBoston
SDF - BOS
SDFBOS
Louisville Intl
Sat 10/24
7:05 am-1:45 pm
2 stops6h 40m
Boston Logan Intl
Sat 10/31
5:40 pm-10:20 pm
1 stop4h 40m
$389
LouisvilleBoston
SDF - BOS
SDFBOS
Louisville Intl
Sat 10/17
11:20 am-3:15 pm
1 stop3h 55m
Boston Logan Intl
Tue 10/20
10:35 am-8:30 pm
2 stops9h 55m
$389
LouisvilleBoston
SDF - BOS
SDFBOS
Louisville Intl
Sat 5/30
1:55 pm-7:24 pm
1 stop5h 29m
Boston Logan Intl
Thu 6/4
9:55 am-12:35 pm
Nonstop2h 40m
$403
LouisvilleBoston
SDF - BOS
SDFBOS
Louisville Intl
Fri 6/12
5:26 pm-11:54 pm
1 stop6h 28m
Boston Logan Intl
Sun 6/14
9:28 am-12:06 pm
Nonstop2h 38m
$403
LouisvilleBoston
SDF - BOS
SDFBOS
Louisville Intl
Mon 6/8
3:00 pm-11:25 pm
2 stops8h 25m
Boston Logan Intl
Thu 6/11
7:55 am-4:55 pm
2 stops9h 00m
$404
Showing 1-10 of 23 resultsSorted by cheapest first
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.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy- | Trust Score*1 star | |
| Price Accuracy1 star | Trust Score*3 stars |
- 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.
SDF-BOS
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 $317). Flying from Louisville to Boston in April is currently the most expensive (average of $495). 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 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 April 29, 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.
Comfort
8.0
Overall
8.0
Entertainment
7.5
Food
7.0
Boarding
8.1
Crew
8.6
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Comfort
8.0
Overall
8.0
Entertainment
7.5
Food
7.0
Boarding
8.1
Crew
8.6
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Comfort
8.0
Overall
8.0
Entertainment
7.5
Food
7.0
Boarding
8.1
Crew
8.6
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Comfort
8.0
Overall
8.0
Entertainment
7.5
Food
7.0
Boarding
8.1
Crew
8.6
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Comfort
8.0
Overall
8.0
Entertainment
7.5
Food
7.0
Boarding
8.1
Crew
8.6
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Comfort
8.0
Overall
8.0
Entertainment
7.5
Food
7.0
Boarding
8.1
Crew
8.6
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
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.
Traveling to a place near Boston?
Book flights to Boston if you plan to visit one of these locationsMedford
Cambridge
Concord
Hampton Beach
Watertown
Brockton
Seekonk
Cranston
Chelsea
Warwick
Peabody
Seabrook
York Beach
Londonderry
Swansea
Old Orchard Beach
Quincy
Waltham
Lowell
Braintree
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
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Alternative routes for Louisville to Boston
See prices for flight routes from nearby airports that may be better suited for you.
Other flights to Boston
Explore flights to Boston departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on April 29, 2026.
Complete your trip
Complete your trip to Boston by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from Louisville to Boston by cabin class
Find flights from Louisville to Boston, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Louisville and Boston flights
Browse other Louisville and Boston flight options. Last updated on April 29, 2026.
Other flights from Louisville
Browse through other flights departing from Louisville. Flights are based on user searches made on Cheapflights and were last updated on April 29, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
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 29, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$191 | Average$216 | FlexibilityNo cancel fee | On-time65% | |
| Cheapest$216 | Average$383 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$217 | Average$376 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$261 | Average$370 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$294 | Average$437 | FlexibilityNo cancel fee | On-time69% |