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$188+ 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 5/12. Fares are subject to change and may not be available on all flights or dates of travel.
BOI — SDF
May 10 — May 171
Sun 5/10
Sun 5/17
1 adult, Economy
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Cheap flight deals from Boise to Louisville

Cheapest flights from Boise to Louisville
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 April 10, 2026.

This American Airlines deal was found by Cheapflights users on 4/7. 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 7/812:14 pm
BOI
-
SDF
1 stop9h 02m
American Airlines
Tue 8/257:00 am
SDF
-
BOI
1 stop9h 02m
American Airlines
Deal found 4/7$416
This Southwest deal was found by Cheapflights users on 4/7. 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 7/107:10 am
BOI
-
SDF
1 stop8h 15m
Southwest
Tue 8/254:00 pm
SDF
-
BOI
2 stops9h 10m
Southwest
Deal found 4/7$421
This Southwest deal was found by Cheapflights users on 4/7. 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 7/811:30 am
BOI
-
SDF
2 stops8h 10m
Southwest
Tue 8/257:05 am
SDF
-
BOI
2 stops9h 45m
Southwest
Deal found 4/7$426
This American Airlines deal was found by Cheapflights users on 4/6. 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.
Fri 5/81:41 pm
BOI
-
SDF
1 stop8h 12m
American Airlines
Mon 5/115:56 am
SDF
-
BOI
1 stop8h 53m
American Airlines
Deal found 4/6$428
This Delta deal was found by Cheapflights users on 4/9. 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 5/159:16 pm
BOI
-
SDF
2 stops10h 43m
Delta
Mon 5/257:49 pm
SDF
-
BOI
1 stop5h 57m
Delta
Deal found 4/9$433
This Delta deal was found by Cheapflights users on 4/6. 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 5/810:50 am
BOI
-
SDF
2 stops11h 02m
Delta
Mon 5/113:37 pm
SDF
-
BOI
1 stop8h 51m
Delta
Deal found 4/6$443
This Delta deal was found by Cheapflights users on 4/9. 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 6/1810:29 am
BOI
-
SDF
1 stop6h 42m
Delta
Tue 7/76:49 am
SDF
-
BOI
1 stop6h 08m
Delta
Deal found 4/9$457
This Southwest deal was found by Cheapflights users on 4/7. 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 7/74:05 pm
BOI
-
SDF
1 stop6h 10m
Southwest
Sun 7/126:30 am
SDF
-
BOI
1 stop8h 00m
Southwest
Deal found 4/7$467

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 April 10, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$416
(American Airlines)

One-way from

$188
(American Airlines)

Popular in

March

Cheapest in

August

Average price

$464
Provider with most accurate pricing for Boise Air Term. Gowen Fld-Louisville Intl flight deals.
Search Deals
Provider most trusted by Cheapflights users for Boise Air Term. Gowen Fld-Louisville Intl flights.
Search Deals
From Boise Air Term. Gowen Fld to Louisville Intl
Search Deals
One-way flight from Boise Air Term. Gowen Fld to Louisville Intl
Search Deals
Highest demand for flights based on searches. 13% potential increase in price ($80 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease ($28 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in April 2026
Search Deals

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 April 10, 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

Price

Cheapest round-trip

BoiseLouisville

BOI - SDF

BOISDF

Boise Air Term. Gowen Fld

Fri 5/15

9:16 pm-9:59 am

2 stops10h 43m

Louisville Intl

Mon 5/25

7:49 pm-11:46 pm

1 stop5h 57m

$433
Quickest round-trip

BoiseLouisville

BOI - SDF

BOISDF

Boise Air Term. Gowen Fld

Fri 5/8

1:53 pm-12:25 am

1 stop8h 32m

Louisville Intl

Sun 5/10

7:49 pm-11:46 pm

1 stop5h 57m

$457

BoiseLouisville

BOI - SDF

BOISDF

Boise Air Term. Gowen Fld

Tue 6/16

11:45 pm-10:32 am

1 stop8h 47m

Louisville Intl

Sun 6/21

4:40 pm-10:35 pm

1 stop7h 55m

$475

BoiseLouisville

BOI - SDF

BOISDF

Boise Air Term. Gowen Fld

Tue 5/5

2:26 pm-10:31 pm

1 stop6h 05m

Louisville Intl

Wed 5/6

9:00 am-10:16 pm

2 stops15h 16m

$480

BoiseLouisville

BOI - SDF

BOISDF

Boise Air Term. Gowen Fld

Thu 6/18

11:45 pm-10:32 am

1 stop8h 47m

Louisville Intl

Tue 7/7

5:55 pm-12:05 am

2 stops8h 10m

$482

BoiseLouisville

BOI - SDF

BOISDF

Boise Air Term. Gowen Fld

Sat 5/9

6:30 am-2:41 pm

1 stop6h 11m

Louisville Intl

Tue 5/12

3:37 pm-10:35 pm

1 stop8h 58m

$487
Cheapest one-way

BoiseLouisville

BOI - SDF

BOISDF

Boise Air Term. Gowen Fld

Tue 5/12

1:29 pm-12:23 am

1 stop8h 54m

$188
Quickest one-way

BoiseLouisville

BOI - SDF

BOISDF

Boise Air Term. Gowen Fld

Tue 5/12

10:05 am-8:35 pm

2 stops8h 30m

$234

BoiseLouisville

BOI - SDF

BOISDF

Boise Air Term. Gowen Fld

Tue 5/12

6:00 am-1:51 pm

3 stops29h 51m

$514

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/8

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 April.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • 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.
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, September is the cheapest month in which you can book a flight from Boise to Louisville (average of $125). Flying from Boise to Louisville in December is currently the most expensive (average of $450). 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 April 10, 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.
Southwest
8.0
Very good
4,334 reviews

Entertainment

7.5

Crew

8.6

Food

7.0

Boarding

8.1

Comfort

8.0

Overall

8.0

Reviews

1 / 20
2.0
Mediocre

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.
Southwest
8.0
Very good
4,334 reviews
Southwest
8.0
Very good
4,334 reviews

Entertainment

7.5

Crew

8.6

Food

7.0

Boarding

8.1

Comfort

8.0

Overall

8.0

Reviews

1 / 20
2.0
Mediocre

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.
Delta
7.9
Good
8,398 reviews
Southwest
8.0
Very good
4,334 reviews

Entertainment

7.5

Crew

8.6

Food

7.0

Boarding

8.1

Comfort

8.0

Overall

8.0

Reviews

1 / 20
2.0
Mediocre

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.
United Airlines
7.4
Good
9,562 reviews
Southwest
8.0
Very good
4,334 reviews

Entertainment

7.5

Crew

8.6

Food

7.0

Boarding

8.1

Comfort

8.0

Overall

8.0

Reviews

1 / 20
2.0
Mediocre

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.
American Airlines
7.1
Good
11,564 reviews
Southwest
8.0
Very good
4,334 reviews

Entertainment

7.5

Crew

8.6

Food

7.0

Boarding

8.1

Comfort

8.0

Overall

8.0

Reviews

1 / 20
2.0
Mediocre

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.

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.

  • How long is the flight from Boise to Louisville?

    Airlines like Delta fly from Boise to Louisville in about 10h 43m. The time it takes to get you to your destination can typically vary by up to . Airlines will cover a distance of 1625 mi.

  • What are the cheapest airlines flying from Boise to Louisville round-trip?

    Currently priced at $171, Delta will fly you from Boise to Louisville and back. In addition to Delta, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from Southwest and American Airlines - these airlines can fly you to your destination from $372 and $379, respectively. Delta is 67% cheaper than the average price of flights available within the next 90 days to this destination.

  • Can I find deals for flights from Boise to Louisville that include hotel bookings?

    Yes. In addition to deals on Boise to Louisville flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Boise to Louisville?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Boise to Louisville.

  • Can I find deals for business class flights from Boise to Louisville?

    Yes. Cheapflights offers flight deals from Boise to Louisville by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Boise to Louisville?

    Currently, September is the cheapest month in which you can book a flight from Boise to Louisville (average of $125). Flying from Boise to Louisville in December is currently the most expensive (average of $450). 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.

See more FAQs

Traveling to a place near Louisville?

Book flights to Louisville if you plan to visit one of these locations
Shepherdsville
Elizabethtown
Corydon
Jeffersonville
Bardstown

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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 April 10, 2026.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$171Average$452FlexibilityNo cancel feeOn-timeN/A
SouthwestCheapest$372Average$474FlexibilityNo cancel feeOn-time63%
American AirlinesCheapest$379Average$476FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$381Average$517FlexibilityNo cancel feeOn-time69%

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