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$133+ 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 9/18. Fares are subject to change and may not be available on all flights or dates of travel.
BOI — SDF
ago 25 — set 11
seg 8/25
seg 9/1
1 adult, Economy
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Cheap 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 agosto 20, 2025.

Round-trip from

$272
(Kiwi.com)

One-way from

$133
(Kiwi.com)

Popular in

March

Cheapest in

August

Average price

$378
From Boise Air Term. Gowen Fld to Louisville Intl
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One-way flight from Boise Air Term. Gowen Fld to Louisville Intl
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Highest demand for flights based on searches. 17% potential increase in price ($102 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($17 potential savings vs. average RT price).
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Average for round-trip flights in August 2025
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Find 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 agosto 20, 2025.

This Kiwi.com deal was found by Cheapflights users on 8/20. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
qui 10/92:25 pmBOI - SDF
1 stop21h 37mSpirit Airlines
dom 10/122:57 pmSDF - BOI
1 stop30h 59mSpirit Airlines
Deal found 8/20$272
This American Airlines deal was found by Cheapflights users on 8/18. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
ter 9/91:07 pmBOI - SDF
1 stop7h 56mAmerican Airlines
qua 9/107:00 amSDF - BOI
1 stop7h 27mAmerican Airlines
Deal found 8/18$297
This Kiwi.com deal was found by Cheapflights users on 8/19. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
qui 10/22:16 pmBOI - SDF
1 stop23h 04mSpirit Airlines
dom 10/52:57 pmSDF - BOI
1 stop30h 59mSpirit Airlines
Deal found 8/19$305
This American Airlines deal was found by Cheapflights users on 8/18. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb 11/11:33 pmBOI - SDF
1 stop6h 52mAmerican Airlines
ter 11/46:44 amSDF - BOI
1 stop8h 22mAmerican Airlines
Deal found 8/18$313
This Delta deal was found by Cheapflights users on 8/18. 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.
sáb 11/15:42 amBOI - SDF
2 stops12h 06mDelta
ter 11/46:00 amSDF - BOI
1 stop8h 29mDelta
Deal found 8/18$318
This Kiwi.com deal was found by Cheapflights users on 8/19. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
seg 9/299:26 pmBOI - SDF
2 stops33h 53mSpirit Airlines
sex 10/34:20 pmSDF - BOI
1 stop23h 01mSpirit Airlines
Deal found 8/19$324
This United Airlines deal was found by Cheapflights users on 8/19. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
seg 9/292:39 pmBOI - SDF
1 stop5h 51mUnited Airlines
sex 10/33:30 pmSDF - BOI
1 stop7h 54mUnited Airlines
Deal found 8/19$366
This FlightHub deal was found by Cheapflights users on 8/18. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb 10/42:16 pmBOI - SDF
1 stop21h 46mSpirit Airlines
sex 10/102:57 pmSDF - BOI
1 stop24h 33mSpirit Airlines
Deal found 8/18$377
This Southwest deal was found by Cheapflights users on 8/19. 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.
qua 10/84:15 pmBOI - SDF
1 stop5h 20mSouthwest
sex 10/104:35 pmSDF - BOI
1 stop9h 45mSouthwest
Deal found 8/19$384

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 agosto 20, 2025.
Use the filters below to find and compare flights from Boise to Louisville that are best for you.

Fly from

Boise

Fly to

Louisville

Route

Depart

Return

Price

BoiseLouisville

BOI - SDF

BOISDF

Boise Air Term. Gowen Fld

qui 10/9

2:25 pm-2:02 pm

1 stop21h 37m

Louisville Intl

dom 10/12

2:57 pm-7:56 pm

1 stop30h 59m

$272

BoiseLouisville

BOI - SDF

BOISDF

Boise Air Term. Gowen Fld

ter 9/9

1:38 pm-11:40 pm

1 stop8h 02m

Louisville Intl

ter 9/16

7:00 am-12:27 pm

1 stop7h 27m

$297

BoiseLouisville

BOI - SDF

BOISDF

Boise Air Term. Gowen Fld

ter 9/9

1:07 pm-11:03 pm

1 stop7h 56m

Louisville Intl

qua 9/10

7:00 am-12:27 pm

1 stop7h 27m

$297

BoiseLouisville

BOI - SDF

BOISDF

Boise Air Term. Gowen Fld

qui 10/2

2:16 pm-3:20 pm

1 stop23h 04m

Louisville Intl

dom 10/5

2:57 pm-7:56 pm

1 stop30h 59m

$305

BoiseLouisville

BOI - SDF

BOISDF

Boise Air Term. Gowen Fld

sáb 11/1

1:33 pm-10:25 pm

1 stop6h 52m

Louisville Intl

ter 11/4

6:44 am-1:06 pm

1 stop8h 22m

$313

BoiseLouisville

BOI - SDF

BOISDF

Boise Air Term. Gowen Fld

sáb 11/1

5:42 am-7:48 pm

2 stops12h 06m

Louisville Intl

ter 11/4

6:00 am-12:29 pm

1 stop8h 29m

$318

BoiseLouisville

BOI - SDF

BOISDF

Boise Air Term. Gowen Fld

seg 9/29

9:26 pm-9:19 am

2 stops33h 53m

Louisville Intl

sex 10/3

4:20 pm-1:21 pm

1 stop23h 01m

$324

BoiseLouisville

BOI - SDF

BOISDF

Boise Air Term. Gowen Fld

sex 10/31

7:00 am-5:59 pm

1 stop8h 59m

Louisville Intl

dom 11/2

5:00 am-12:06 pm

1 stop9h 06m

$353

BoiseLouisville

BOI - SDF

BOISDF

Boise Air Term. Gowen Fld

qui 9/18

2:16 pm-3:20 pm

1 stop23h 04m

$133

BoiseLouisville

BOI - SDF

BOISDF

Boise Air Term. Gowen Fld

qua 11/12

1:29 pm-10:01 pm

1 stop6h 32m

$149

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/18

Showing 1-10 of 18 results
1
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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, January is the cheapest month in which you can book a flight from Boise to Louisville (average of $299). Flying from Boise to Louisville in April is currently the most expensive (average of $369). 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 BOI to SDF?

Find hourly flight availability from Boise to Louisville. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated agosto 20, 2025.

It’s optimal to fly from Boise to Louisville in the evening. By choosing this option you can save up to 26% on the cost of your flight, compared to a flight in the morning.

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 agosto 20, 2025.
See what other customers who have flown with Southwest, Delta, and United 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
4,246 reviews

Overall

8.0

Food

7.0

Boarding

8.1

Crew

8.6

Entertainment

7.5

Comfort

8.0

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.
Southwest
8.0
Very good
4,246 reviews
Southwest
8.0
Very good
4,246 reviews

Overall

8.0

Food

7.0

Boarding

8.1

Crew

8.6

Entertainment

7.5

Comfort

8.0

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.
Delta
8.0
Very good
7,982 reviews
Southwest
8.0
Very good
4,246 reviews

Overall

8.0

Food

7.0

Boarding

8.1

Crew

8.6

Entertainment

7.5

Comfort

8.0

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.
United Airlines
7.4
Good
8,928 reviews
Southwest
8.0
Very good
4,246 reviews

Overall

8.0

Food

7.0

Boarding

8.1

Crew

8.6

Entertainment

7.5

Comfort

8.0

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.
American Airlines
7.2
Good
10,000 reviews
Southwest
8.0
Very good
4,246 reviews

Overall

8.0

Food

7.0

Boarding

8.1

Crew

8.6

Entertainment

7.5

Comfort

8.0

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.

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 Spirit Airlines and American Airlines fly from Boise to Louisville in about 8h 02m. The time it takes to get you to your destination can typically vary by up to 13h 35m. Airlines will cover a distance of 1625 mi. This flight may include one or multiple stops.

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

    Currently priced at $305, 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 $348 and $356, respectively. Delta is 39% cheaper than the average price of flights available within the next 90 days to this destination.

  • What are the cheapest airlines to fly from Boise to Louisville one-way?

    $133 is the cheapest one-way deal found within the past few days, from Spirit Airlines. You may also be able to find cheap deals on American Airlines and United Airlines, with prices starting from $149 and $149, respectively.

  • 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, January is the cheapest month in which you can book a flight from Boise to Louisville (average of $299). Flying from Boise to Louisville in April is currently the most expensive (average of $369). 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
Jeffersonville
Elizabethtown
Corydon
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 agosto 20, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$305Average$419FlexibilityNo cancel feeOn-timeN/A
SouthwestCheapest$348Average$446FlexibilityNo cancel feeOn-time63%
American AirlinesCheapest$356Average$467FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$386Average$657FlexibilityNo cancel feeOn-time69%

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