$229+ Cheap flights from Boise to Louisville (BOI - SDF)
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 7/2. Fares are subject to change and may not be available on all flights or dates of travel.
BOI — SDF
Jun 22 — Jun 291
Round-trip
1 adult, Economy
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Find cheap flights from Boise to Louisville with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
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Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheap flight deals from Boise to Louisville
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Best
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Cheapest flights from Boise to LouisvilleExplore the most affordable flight options available from Boise to Louisville. Find the lowest fares from popular airlines and budget airlines, with prices last updated on May 23, 2026.
Explore the most affordable flight options available from Boise to Louisville. Find the lowest fares from popular airlines and budget airlines, with prices last updated on May 23, 2026.
This Delta deal was found by Cheapflights users on 5/19. 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 6/302:04 pm
BOI
- SDF
1 stop8h 28m
Delta
Wed 7/16:49 am
SDF
- BOI
1 stop9h 02m
Delta
Deal found 5/19![Delta logo]()
$395
This United Airlines deal was found by Cheapflights users on 5/20. 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.
Wed 9/302:31 pm
BOI
- SDF
1 stop5h 58m
United Airlines
Tue 10/610:25 am
SDF
- BOI
2 stops9h 33m
United Airlines
Deal found 5/20![United Airlines logo]()
$400
This Southwest deal was found by Cheapflights users on 5/19. 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 8/248:05 am
BOI
- SDF
1 stop7h 15m
Southwest
Thu 8/2710:40 am
SDF
- BOI
1 stop7h 35m
Southwest
Deal found 5/19![Southwest logo]()
$421
This Delta deal was found by Cheapflights users on 5/19. 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 6/302:50 pm
BOI
- SDF
1 stop7h 06m
Delta
Sun 7/55:59 pm
SDF
- BOI
1 stop7h 48m
Delta
Deal found 5/19![Delta logo]()
$426
This Southwest deal was found by Cheapflights users on 5/20. 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 9/36:00 am
BOI
- SDF
1 stop6h 40m
Southwest
Mon 9/710:40 am
SDF
- BOI
1 stop7h 35m
Southwest
Deal found 5/20![Southwest logo]()
$439
This Southwest deal was found by Cheapflights users on 5/20. 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 9/307:05 am
BOI
- SDF
2 stops11h 30m
Southwest
Tue 10/63:20 pm
SDF
- BOI
2 stops9h 40m
Southwest
Deal found 5/20![Southwest logo]()
$442
This Delta deal was found by Cheapflights users on 5/22. 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 6/1811:45 pm
BOI
- SDF
1 stop7h 12m
Delta
Tue 7/77:49 pm
SDF
- BOI
1 stop5h 57m
Delta
Deal found 5/22![Delta logo]()
$446
This Delta deal was found by Cheapflights users on 5/20. 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 6/2511:45 pm
BOI
- SDF
1 stop7h 12m
Delta
Mon 6/294:40 pm
SDF
- BOI
1 stop7h 55m
Delta
Deal found 5/20![Delta logo]()
$457
Best flights from Boise to LouisvilleDiscover carefully curated flight deals from Boise to Louisville that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated May 23, 2026.
Discover carefully curated flight deals from Boise to Louisville that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated May 23, 2026.
This Delta deal was found by Cheapflights users on 5/22. 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 6/1811:45 pm
BOI
- SDF
1 stop7h 12m
Delta
Tue 7/77:49 pm
SDF
- BOI
1 stop5h 57m
Delta
Deal found 5/22![Delta logo]()
$446
This Southwest deal was found by Cheapflights users on 5/19. 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 6/174:05 pm
BOI
- SDF
1 stop6h 10m
Southwest
Sat 6/207:55 pm
SDF
- BOI
1 stop6h 30m
Southwest
Deal found 5/19![Southwest logo]()
$497
This Delta deal was found by Cheapflights users on 5/19. 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 6/2611:45 pm
BOI
- SDF
1 stop8h 08m
Delta
Tue 6/306:49 am
SDF
- BOI
1 stop6h 09m
Delta
Deal found 5/19![Delta logo]()
$457
This Southwest deal was found by Cheapflights users on 5/22. 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 7/910:25 am
BOI
- SDF
2 stops10h 05m
Southwest
Mon 7/131:10 pm
SDF
- BOI
1 stop11h 50m
Southwest
Deal found 5/22![Southwest logo]()
$498
This Delta deal was found by Cheapflights users on 5/22. 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 7/312:50 pm
BOI
- SDF
1 stop7h 00m
Delta
Mon 8/33:25 pm
SDF
- BOI
1 stop8h 54m
Delta
Deal found 5/22![Delta logo]()
$457
This Delta deal was found by Cheapflights users on 5/21. 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 7/2311:42 pm
BOI
- SDF
1 stop7h 12m
Delta
Sun 7/268:10 am
SDF
- BOI
1 stop6h 43m
Delta
Deal found 5/21![Delta logo]()
$457
This Southwest deal was found by Cheapflights users on 5/20. 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 6/117:10 am
BOI
- SDF
1 stop8h 15m
Southwest
Sat 6/137:55 pm
SDF
- BOI
1 stop6h 30m
Southwest
Deal found 5/20![Southwest logo]()
$517
Last-minute flights from Boise to LouisvilleDiscover last-minute flight deals from Boise to Louisville. Data last updated May 23, 2026 and is based on user searches.
Discover last-minute flight deals from Boise to Louisville. Data last updated May 23, 2026 and is based on user searches.
This Southwest deal was found by Cheapflights users on 5/19. 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 6/174:05 pm
BOI
- SDF
1 stop6h 10m
Southwest
Sat 6/207:55 pm
SDF
- BOI
1 stop6h 30m
Southwest
Deal found 5/19![Southwest logo]()
$497
This Delta deal was found by Cheapflights users on 5/22. 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 6/1811:45 pm
BOI
- SDF
1 stop7h 12m
Delta
Tue 7/77:49 pm
SDF
- BOI
1 stop5h 57m
Delta
Deal found 5/22![Delta logo]()
$446
This American Airlines deal was found by Cheapflights users on 5/19. 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.
Thu 6/1812:13 pm
BOI
- SDF
1 stop9h 06m
American Airlines
Tue 7/76:38 am
SDF
- BOI
1 stop6h 42m
American Airlines
Deal found 5/19![American Airlines logo]()
$478
This Delta deal was found by Cheapflights users on 5/20. 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.
Sun 6/2111:45 pm
BOI
- SDF
1 stop7h 12m
Delta
Wed 7/16:49 am
SDF
- BOI
1 stop9h 02m
Delta
Deal found 5/20![Delta logo]()
$485
This Delta deal was found by Cheapflights users on 5/20. 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 6/2511:45 pm
BOI
- SDF
1 stop7h 12m
Delta
Mon 6/294:40 pm
SDF
- BOI
1 stop7h 55m
Delta
Deal found 5/20![Delta logo]()
$457
This Delta deal was found by Cheapflights users on 5/19. 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 6/272:04 pm
BOI
- SDF
1 stop8h 17m
Delta
Fri 7/34:40 pm
SDF
- BOI
1 stop7h 55m
Delta
Deal found 5/19![Delta logo]()
$487
This Delta deal was found by Cheapflights users on 5/19. 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 6/302:04 pm
BOI
- SDF
1 stop8h 28m
Delta
Wed 7/16:49 am
SDF
- BOI
1 stop9h 02m
Delta
Deal found 5/19![Delta logo]()
$395
This Delta deal was found by Cheapflights users on 5/19. 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 6/302:04 pm
BOI
- SDF
1 stop8h 28m
Delta
Mon 7/66:49 am
SDF
- BOI
1 stop6h 09m
Delta
Deal found 5/19![Delta logo]()
$426
This Southwest deal was found by Cheapflights users on 5/19. 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 6/304:05 pm
BOI
- SDF
1 stop6h 10m
Southwest
Fri 7/33:35 pm
SDF
- BOI
2 stops9h 20m
Southwest
Deal found 5/19![Southwest logo]()
$462
One-way flights from Boise to LouisvilleSearch for one-way flight options from Boise to Louisville. Find affordable one-way fares based on user searches. Data last updated May 23, 2026.
Search for one-way flight options from Boise to Louisville. Find affordable one-way fares based on user searches. Data last updated May 23, 2026.
This Delta deal was found by Cheapflights users on 5/18. 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 7/22:50 pm
BOI
- SDF
1 stop7h 06m
Delta
Deal found 5/18![Delta logo]()
$229
This United Airlines deal was found by Cheapflights users on 5/18. 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.
Tue 6/212:30 pm
BOI
- SDF
1 stop5h 53m
United Airlines
Deal found 5/18![United Airlines logo]()
$289
This Alaska Airlines deal was found by Cheapflights users on 5/18. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/26:13 pm
BOI
- SDF
2 stops15h 34m
Alaska Airlines
Deal found 5/18![Alaska Airlines logo]()
$364
This Kiwi.com deal was found by Cheapflights users on 5/18. 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.
Tue 6/21:25 pm
BOI
- SDF
3 stops50h 31m
Multiple Airlines
Deal found 5/18![Multiple Airlines logo]()
$521
Find flight deals from Boise to Louisville
Discover tips and strategies to find the most affordable flight options for your journey from Boise (BOI) to Louisville (SDF). 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 May 23, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $395 (Delta) |
One-way from | $229 (Delta) |
Popular in | March |
Cheapest in | August |
Average price | $452 |
Cheapflights Fare Finder
Customize your flight search to find flights from Boise 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, Cheapflights users made 2,558,603 searches. Data last updated May 23, 2026.
Use the filters below to find and compare flights from Boise to Louisville that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
BoiseLouisville
BOI - SDF
BOISDF
Boise Air Term. Gowen Fld
Thu 6/18
11:45 pm-8:57 am
1 stop7h 12m
Louisville Intl
Tue 7/7
7:49 pm-11:46 pm
1 stop5h 57m
$446
BoiseLouisville
BOI - SDF
BOISDF
Boise Air Term. Gowen Fld
Fri 6/26
11:45 pm-9:53 am
1 stop8h 08m
Louisville Intl
Tue 6/30
6:49 am-10:58 am
1 stop6h 09m
$457
BoiseLouisville
BOI - SDF
BOISDF
Boise Air Term. Gowen Fld
Fri 7/31
2:50 pm-11:50 pm
1 stop7h 00m
Louisville Intl
Mon 8/3
3:25 pm-10:19 pm
1 stop8h 54m
$457
BoiseLouisville
BOI - SDF
BOISDF
Boise Air Term. Gowen Fld
Thu 7/23
11:42 pm-8:54 am
1 stop7h 12m
Louisville Intl
Sun 7/26
8:10 am-12:53 pm
1 stop6h 43m
$457
Quickest round-trip
BoiseLouisville
BOI - SDF
BOISDF
Boise Air Term. Gowen Fld
Wed 6/17
4:05 pm-12:15 am
1 stop6h 10m
Louisville Intl
Sat 6/20
7:55 pm-12:25 am
1 stop6h 30m
$497
BoiseLouisville
BOI - SDF
BOISDF
Boise Air Term. Gowen Fld
Thu 7/9
10:25 am-10:30 pm
2 stops10h 05m
Louisville Intl
Mon 7/13
1:10 pm-11:00 pm
1 stop11h 50m
$498
BoiseLouisville
BOI - SDF
BOISDF
Boise Air Term. Gowen Fld
Thu 6/11
7:10 am-5:25 pm
1 stop8h 15m
Louisville Intl
Sat 6/13
7:55 pm-12:25 am
1 stop6h 30m
$517
Cheapest one-way
BoiseLouisville
BOI - SDF
BOISDF
Boise Air Term. Gowen Fld
Thu 7/2
2:50 pm-11:56 pm
1 stop7h 06m
$229
Quickest one-way
BoiseLouisville
BOI - SDF
BOISDF
Boise Air Term. Gowen Fld
Tue 6/2
12:30 pm-8:23 pm
1 stop5h 53m
$289
BoiseLouisville
BOI - SDF
BOISDF
Boise Air Term. Gowen Fld
Tue 6/2
1:25 pm-5:56 pm
3 stops50h 31m
$521
Sorted by cheapest first
Compare providers for flights from Boise to Louisville
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 Boise to Louisville in May.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars |
- Most accurate provider: When it comes to deals on Boise-Louisville flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Boise-Louisville flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Boise-Louisville flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on Boise-Louisville 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 Boise-Louisville 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 Boise to Louisville
Have a flexible travel schedule? Discover the best time to fly to Louisville from Boise with our price prediction graph.
BOI-SDF
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 Boise to Louisville
What is the cheapest month to book a flight from Boise to Louisville?
Currently, August is the cheapest month in which you can book a flight from Boise to Louisville (average of $378). Flying from Boise to Louisville in March is currently the most expensive (average of $833). 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.
How much does it cost to fly round-trip from Boise to Louisville?
Reviews of airlines servicing Louisville
Get insights into the airlines that provide service to Louisville. 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 Louisville. Reviews last updated May 23, 2026.
See what other customers who have flown with Southwest,Delta, andUnited Airlines from Boise to Louisville have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Boarding
8.1
Crew
8.6
Food
7.0
Comfort
8.0
Entertainment
7.5
Overall
7.9
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Boarding
8.1
Crew
8.6
Food
7.0
Comfort
8.0
Entertainment
7.5
Overall
7.9
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Boarding
8.1
Crew
8.6
Food
7.0
Comfort
8.0
Entertainment
7.5
Overall
7.9
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Boarding
8.1
Crew
8.6
Food
7.0
Comfort
8.0
Entertainment
7.5
Overall
7.9
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Boarding
8.1
Crew
8.6
Food
7.0
Comfort
8.0
Entertainment
7.5
Overall
7.9
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Related info for your journey
Find useful and relevant information for your journey from Boise to Louisville. 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 Louisville?
Book flights to Louisville if you plan to visit one of these locationsShepherdsville
Elizabethtown
Corydon
Jeffersonville
Bardstown
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Other flights to Louisville
Explore flights to Louisville departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on May 23, 2026.
Boise and Louisville flights
Browse other Boise and Louisville flight options. Last updated on May 23, 2026.
Other flights from Boise
Browse through other flights departing from Boise. Flights are based on user searches made on Cheapflights and were last updated on May 23, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Top 4 airlines flying from Boise to Louisville
Discover the top 4 airlines that operate flights from Boise to Louisville. 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 May 23, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$306 | Average$452 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$372 | Average$492 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$377 | Average$476 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$381 | Average$517 | FlexibilityNo cancel fee | On-time69% |