$128+ 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 1/28. Fares are subject to change and may not be available on all flights or dates of travel.
SDF — BOS
Sep 3 — Sep 101
Round-trip
1 adult, Economy
We work with more than 300 partners to bring you better travel deals
Find cheap flights from Louisville to Boston with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheapflights Tip: The best prices from Louisville Intl to Boston Logan Intl are usually found in October or November, booked 75 days in advance, depart on a Saturday or Thursday 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 August 4, 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 August 4, 2026.
This American Airlines deal was found by Cheapflights users on 7/30. 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.
Sat 8/226:08 am
SDF
- BOS
1 stop10h 34m
American Airlines
Tue 8/256:00 am
BOS
- SDF
1 stop8h 51m
American Airlines
Deal found 7/30![American Airlines logo]()
$277
This Kiwi.com deal was found by Cheapflights users on 7/31. 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 10/99:14 pm
SDF
- BOS
1 stop12h 15m
Multiple Airlines
Mon 10/129:15 am
BOS
- SDF
1 stop29h 51m
Multiple Airlines
Deal found 7/31![Multiple Airlines logo]()
$293
This Kiwi.com deal was found by Cheapflights users on 7/30. 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.
Sat 8/298:46 pm
SDF
- BOS
1 stop15h 04m
Multiple Airlines
Sat 9/512:45 pm
BOS
- SDF
2 stops21h 47m
Multiple Airlines
Deal found 7/30![Multiple Airlines logo]()
$301
This Kiwi.com deal was found by Cheapflights users on 7/31. 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.
Sat 8/228:46 pm
SDF
- BOS
1 stop15h 04m
Multiple Airlines
Sat 8/2910:04 am
BOS
- SDF
2 stops10h 02m
Multiple Airlines
Deal found 7/31![Multiple Airlines logo]()
$305
This Kiwi.com deal was found by Cheapflights users on 7/30. 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 10/238:10 pm
SDF
- BOS
1 stop13h 19m
Allegiant Air
Sat 10/319:02 am
BOS
- SDF
2 stops34h 50m
Allegiant Air
Deal found 7/30![Allegiant Air logo]()
$313
This Kiwi.com deal was found by Cheapflights users on 8/2. 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 8/192:56 pm
SDF
- BOS
1 stop20h 54m
Multiple Airlines
Sat 8/2910:04 am
BOS
- SDF
2 stops10h 02m
Multiple Airlines
Deal found 8/2![Multiple Airlines logo]()
$318
This Southwest deal was found by Cheapflights users on 7/30. 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.
Thu 8/273:20 pm
SDF
- BOS
1 stop7h 00m
Southwest
Thu 9/33:25 pm
BOS
- SDF
1 stop5h 10m
Southwest
Deal found 7/30![Southwest logo]()
$321
This American Airlines deal was found by Cheapflights users on 7/30. 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.
Sat 8/296:08 am
SDF
- BOS
1 stop10h 34m
American Airlines
Mon 9/76:00 am
BOS
- SDF
1 stop6h 07m
American Airlines
Deal found 7/30![American Airlines logo]()
$328
This Kiwi.com deal was found by Cheapflights users on 7/30. 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 10/238:10 pm
SDF
- BOS
1 stop13h 19m
Multiple Airlines
Tue 10/2712:35 pm
BOS
- SDF
2 stops21h 36m
Multiple Airlines
Deal found 7/30![Multiple Airlines logo]()
$329
This Kiwi.com deal was found by Cheapflights users on 8/1. 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 10/99:14 pm
SDF
- BOS
1 stop12h 15m
Multiple Airlines
Tue 10/1311:28 am
BOS
- SDF
2 stops33h 03m
Multiple Airlines
Deal found 8/1![Multiple Airlines logo]()
$330
This Southwest deal was found by Cheapflights users on 7/30. 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
2 stops8h 55m
Southwest
Wed 8/2610:50 am
BOS
- SDF
2 stops9h 45m
Southwest
Deal found 7/30![Southwest logo]()
$331
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 August 4, 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 August 4, 2026.
This Southwest deal was found by Cheapflights users on 7/29. 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.
Tue 11/32:10 pm
SDF
- BOS
2 stops7h 25m
Southwest
Thu 11/125:10 pm
BOS
- SDF
1 stop7h 10m
Southwest
Deal found 7/29![Southwest logo]()
$326
This Delta deal was found by Cheapflights users on 7/31. 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.
Thu 9/2412:39 pm
SDF
- BOS
Nonstop2h 41m
Delta
Thu 10/19:25 am
BOS
- SDF
Nonstop2h 34m
Delta
Deal found 7/31![Delta logo]()
$359
This Delta deal was found by Cheapflights users on 8/1. 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 9/21:29 pm
SDF
- BOS
Nonstop2h 40m
Delta
Tue 9/89:25 am
BOS
- SDF
Nonstop2h 34m
Delta
Deal found 8/1![Delta logo]()
$359
This Southwest deal was found by Cheapflights users on 8/2. 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 10/174:35 pm
SDF
- BOS
1 stop5h 00m
Southwest
Tue 10/2010:55 am
BOS
- SDF
1 stop9h 15m
Southwest
Deal found 8/2![Southwest logo]()
$370
This Delta deal was found by Cheapflights users on 7/31. 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 1/301:00 pm
SDF
- BOS
Nonstop2h 30m
Delta
Wed 2/179:30 am
BOS
- SDF
Nonstop2h 48m
Delta
Deal found 7/31![Delta logo]()
$365
This Southwest deal was found by Cheapflights users on 8/1. 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 9/199:00 am
SDF
- BOS
2 stops6h 20m
Southwest
Tue 9/225:25 am
BOS
- SDF
2 stops9h 50m
Southwest
Deal found 8/1![Southwest logo]()
$375
This Delta deal was found by Cheapflights users on 8/2. 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.
Thu 9/2412:39 pm
SDF
- BOS
Nonstop2h 41m
Delta
Fri 10/26:00 am
BOS
- SDF
1 stop5h 05m
Delta
Deal found 8/2![Delta logo]()
$369
This Southwest deal was found by Cheapflights users on 8/3. 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 10/34:35 pm
SDF
- BOS
1 stop5h 00m
Southwest
Thu 10/225:10 pm
BOS
- SDF
1 stop7h 00m
Southwest
Deal found 8/3![Southwest logo]()
$391
This Delta deal was found by Cheapflights users on 8/2. 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 9/45:59 pm
SDF
- BOS
1 stop5h 31m
Delta
Mon 9/79:30 am
BOS
- SDF
Nonstop2h 42m
Delta
Deal found 8/2![Delta logo]()
$369
This Southwest deal was found by Cheapflights users on 7/31. 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.
Fri 10/308:20 am
SDF
- BOS
2 stops7h 45m
Southwest
Sun 11/15:20 am
BOS
- SDF
2 stops9h 45m
Southwest
Deal found 7/31![Southwest logo]()
$402
This Delta deal was found by Cheapflights users on 7/29. 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.
Tue 10/272:50 pm
SDF
- BOS
1 stop4h 39m
Delta
Wed 11/49:45 am
BOS
- SDF
Nonstop2h 42m
Delta
Deal found 7/29![Delta logo]()
$395
This Southwest deal was found by Cheapflights users on 7/29. 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.
Tue 8/181:15 pm
SDF
- BOS
2 stops8h 55m
Southwest
Sat 8/2212:10 pm
BOS
- SDF
2 stops8h 55m
Southwest
Deal found 7/29![Southwest logo]()
$407
Last-minute flights from Louisville to BostonDiscover last-minute flight deals from Louisville to Boston. Data last updated August 4, 2026 and is based on user searches.
Discover last-minute flight deals from Louisville to Boston. Data last updated August 4, 2026 and is based on user searches.
This Delta deal was found by Cheapflights users on 8/2. 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 8/1012:54 pm
SDF
- BOS
Nonstop2h 36m
Delta
Wed 8/199:30 am
BOS
- SDF
Nonstop2h 42m
Delta
Deal found 8/2![Delta logo]()
$453
This Delta deal was found by Cheapflights users on 8/2. 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 8/106:00 am
SDF
- BOS
1 stop6h 45m
Delta
Tue 8/189:30 am
BOS
- SDF
Nonstop2h 42m
Delta
Deal found 8/2![Delta logo]()
$463
This Kiwi.com deal was found by Cheapflights users on 7/31. 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 8/109:10 pm
SDF
- BOS
2 stops34h 36m
Multiple Airlines
Sat 8/158:37 am
BOS
- SDF
1 stop11h 29m
Multiple Airlines
Deal found 7/31![Multiple Airlines logo]()
$477
This Southwest deal was found by Cheapflights users on 8/2. 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 8/114:00 pm
SDF
- BOS
1 stop6h 10m
Southwest
Fri 8/145:50 am
BOS
- SDF
1 stop4h 10m
Southwest
Deal found 8/2![Southwest logo]()
$473
This American Airlines deal was found by Cheapflights users on 7/30. 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 8/125:10 pm
SDF
- BOS
Nonstop2h 31m
American Airlines
Sun 8/162:04 pm
BOS
- SDF
Nonstop2h 37m
American Airlines
Deal found 7/30![American Airlines logo]()
$506
This Delta deal was found by Cheapflights users on 7/30. 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 8/127:05 am
SDF
- BOS
1 stop6h 47m
Delta
Sun 8/1612:55 pm
BOS
- SDF
Nonstop2h 45m
Delta
Deal found 7/30![Delta logo]()
$516
This Southwest deal was found by Cheapflights users on 7/30. 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.
Wed 8/125:30 am
SDF
- BOS
1 stop4h 00m
Southwest
Sun 8/167:20 am
BOS
- SDF
1 stop5h 30m
Southwest
Deal found 7/30![Southwest logo]()
$517
This Delta deal was found by Cheapflights users on 8/3. 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.
Thu 8/1312:54 pm
SDF
- BOS
Nonstop2h 36m
Delta
Tue 8/189:30 am
BOS
- SDF
Nonstop2h 42m
Delta
Deal found 8/3![Delta logo]()
$513
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 August 4, 2026.
Search for one-way flight options from Louisville to Boston. Find affordable one-way fares based on user searches. Data last updated August 4, 2026.
This Kiwi.com deal was found by Cheapflights users on 8/1. 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 1/287:07 pm
SDF
- BOS
1 stop15h 00m
Allegiant Air
Deal found 8/1![Allegiant Air logo]()
$128
This Kiwi.com deal was found by Cheapflights users on 7/30. 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 8/262:56 pm
SDF
- BOS
1 stop20h 54m
Multiple Airlines
Deal found 7/30![Multiple Airlines logo]()
$133
This Kiwi.com deal was found by Cheapflights users on 8/1. 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 10/308:10 pm
SDF
- BOS
1 stop13h 19m
Allegiant Air
Deal found 8/1![Allegiant Air logo]()
$144
This Kiwi.com deal was found by Cheapflights users on 7/30. 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.
Sat 8/298:46 pm
SDF
- BOS
1 stop15h 04m
Multiple Airlines
Deal found 7/30![Multiple Airlines logo]()
$149
This Kiwi.com deal was found by Cheapflights users on 7/31. 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 9/22:56 pm
SDF
- BOS
1 stop20h 54m
Multiple Airlines
Deal found 7/31![Multiple Airlines logo]()
$154
This Kiwi.com deal was found by Cheapflights users on 8/3. 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 8/3![Allegiant Air logo]()
$157
This Kiwi.com deal was found by Cheapflights users on 7/31. 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 10/17:34 pm
SDF
- BOS
1 stop14h 37m
Allegiant Air
Deal found 7/31![Allegiant Air logo]()
$159
This Kiwi.com deal was found by Cheapflights users on 7/30. 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 10/19:09 pm
SDF
- BOS
2 stops36h 20m
Multiple Airlines
Deal found 7/30![Multiple Airlines logo]()
$161
This Kiwi.com deal was found by Cheapflights users on 7/30. 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 11/17:42 pm
SDF
- BOS
1 stop16h 27m
Allegiant Air
Deal found 7/30![Allegiant Air logo]()
$162
This Kiwi.com deal was found by Cheapflights users on 7/30. 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 10/2810:55 am
SDF
- BOS
1 stop24h 43m
Multiple Airlines
Deal found 7/30![Multiple Airlines logo]()
$163
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 August 4, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $277 (American Airlines) |
One-way from | $128 (Kiwi.com) |
Popular in | April |
Cheapest in | October |
Average price | $407 |
Good round-trip deal | $445 or less |
Good one-way deal | $287 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 August 4, 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
Tue 11/3
2:10 pm-9:35 pm
2 stops7h 25m
Boston Logan Intl
Thu 11/12
5:10 pm-12:20 am
1 stop7h 10m
$326
LouisvilleBoston
SDF - BOS
SDFBOS
Louisville Intl
Thu 9/24
12:39 pm-3:20 pm
Nonstop2h 41m
Boston Logan Intl
Thu 10/1
9:25 am-11:59 am
Nonstop2h 34m
$359
Quickest round-trip
LouisvilleBoston
SDF - BOS
SDFBOS
Louisville Intl
Wed 9/2
1:29 pm-4:09 pm
Nonstop2h 40m
Boston Logan Intl
Tue 9/8
9:25 am-11:59 am
Nonstop2h 34m
$359
LouisvilleBoston
SDF - BOS
SDFBOS
Louisville Intl
Sat 1/30
1:00 pm-3:30 pm
Nonstop2h 30m
Boston Logan Intl
Wed 2/17
9:30 am-12:18 pm
Nonstop2h 48m
$365
LouisvilleBoston
SDF - BOS
SDFBOS
Louisville Intl
Thu 9/24
12:39 pm-3:20 pm
Nonstop2h 41m
Boston Logan Intl
Fri 10/2
6:00 am-11:05 am
1 stop5h 05m
$369
LouisvilleBoston
SDF - BOS
SDFBOS
Louisville Intl
Fri 9/4
5:59 pm-11:30 pm
1 stop5h 31m
Boston Logan Intl
Mon 9/7
9:30 am-12:12 pm
Nonstop2h 42m
$369
LouisvilleBoston
SDF - BOS
SDFBOS
Louisville Intl
Sat 10/17
4:35 pm-9:35 pm
1 stop5h 00m
Boston Logan Intl
Tue 10/20
10:55 am-8:10 pm
1 stop9h 15m
$370
LouisvilleBoston
SDF - BOS
SDFBOS
Louisville Intl
Sat 9/19
9:00 am-3:20 pm
2 stops6h 20m
Boston Logan Intl
Tue 9/22
5:25 am-3:15 pm
2 stops9h 50m
$375
LouisvilleBoston
SDF - BOS
SDFBOS
Louisville Intl
Sat 10/3
4:35 pm-9:35 pm
1 stop5h 00m
Boston Logan Intl
Thu 10/22
5:10 pm-12:10 am
1 stop7h 00m
$391
LouisvilleBoston
SDF - BOS
SDFBOS
Louisville Intl
Tue 10/27
2:50 pm-7:29 pm
1 stop4h 39m
Boston Logan Intl
Wed 11/4
9:45 am-12:27 pm
Nonstop2h 42m
$395
Showing 1-10 of 22 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 August.
| 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 74 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, October is the cheapest month in which you can book a flight from Louisville to Boston (average of $360). Flying from Louisville to Boston in April is currently the most expensive (average of $503). 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 August 4, 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 August 4, 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
Entertainment
7.5
Food
7.0
Overall
8.0
Boarding
8.1
Crew
8.6
Reviews
1 / 20
8.0
ExcellentLibby,Jun 2026
TUS - LAS
Comfort
8.0
Entertainment
7.5
Food
7.0
Overall
8.0
Boarding
8.1
Crew
8.6
Reviews
1 / 20
8.0
ExcellentLibby,Jun 2026
TUS - LAS
Comfort
8.0
Entertainment
7.5
Food
7.0
Overall
8.0
Boarding
8.1
Crew
8.6
Reviews
1 / 20
8.0
ExcellentLibby,Jun 2026
TUS - LAS
Comfort
8.0
Entertainment
7.5
Food
7.0
Overall
8.0
Boarding
8.1
Crew
8.6
Reviews
1 / 20
8.0
ExcellentLibby,Jun 2026
TUS - LAS
Comfort
8.0
Entertainment
7.5
Food
7.0
Overall
8.0
Boarding
8.1
Crew
8.6
Reviews
1 / 20
8.0
ExcellentLibby,Jun 2026
TUS - LAS
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 locationsWaltham
Cambridge
Concord
Randolph
Brockton
Seekonk
Hampton Beach
Cranston
Warwick
Peabody
Dedham
Auburn
York Beach
Chelsea
Londonderry
Swansea
Fitchburg
North Falmouth
Braintree
Revere
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
Boston flight routes
Complete your trip
Flights by cabin class
Other flight options
Other flights from Louisville
Popular flights
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 August 4, 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 August 4, 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 August 4, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Top 4 airlines flying from Louisville to Boston
Discover the top 4 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 August 4, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$261 | Average$415 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$267 | Average$405 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$293 | Average$413 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$294 | Average$437 | FlexibilityNo cancel fee | On-time69% |