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$162+ Cheap flights from Idaho to Louisville (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 12/31. Fares are subject to change and may not be available on all flights or dates of travel.
BOI — SDF
Jan 14 — Jan 211
Wed 1/14
Wed 1/21
1 adult, Economy
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Cheap flight deals from Idaho to Louisville

Cheapest flights from Idaho to Louisville
Explore the most affordable flight options available from Idaho to Louisville. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 15, 2025.

This American Airlines deal was found by Cheapflights users on 12/14. 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 12/256:00 amGEG - SDF
1 stop6h 59mAmerican Airlines
Thu 1/15:49 pmSDF - GEG
1 stop6h 39mAmerican Airlines
Deal found 12/14$324
This United Airlines deal was found by Cheapflights users on 12/14. 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.
Thu 12/255:05 amGEG - SDF
2 stops15h 17mUnited Airlines
Thu 1/18:00 amSDF - GEG
1 stop7h 45mUnited Airlines
Deal found 12/14$346
This United Airlines deal was found by Cheapflights users on 12/14. 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.
Thu 12/255:05 amGEG - SDF
1 stop6h 17mUnited Airlines
Wed 12/313:18 pmSDF - GEG
1 stop8h 40mUnited Airlines
Deal found 12/14$436
This American Airlines deal was found by Cheapflights users on 12/14. 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.
Mon 12/2912:46 pmGEG - SDF
1 stop7h 44mAmerican Airlines
Fri 1/28:05 amSDF - GEG
1 stop7h 01mAmerican Airlines
Deal found 12/14$557
This United Airlines deal was found by Cheapflights users on 12/13. 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.
Thu 12/182:30 pmIDA - SDF
1 stop5h 54mUnited Airlines
Mon 12/223:18 pmSDF - IDA
1 stop7h 56mUnited Airlines
Deal found 12/13$628
This Delta deal was found by Cheapflights users on 12/14. 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 12/2910:33 pmGEG - SDF
2 stops11h 39mDelta
Fri 1/24:44 pmSDF - GEG
1 stop7h 53mDelta
Deal found 12/14$762
This Southwest deal was found by Cheapflights users on 12/15. 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 12/1712:40 pmGEG - SDF
1 stop5h 50mSouthwest
Sun 1/46:20 amSDF - GEG
2 stops13h 40mSouthwest
Deal found 12/15$827
This American Airlines deal was found by Cheapflights users on 12/15. 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 12/175:17 amGEG - SDF
1 stop7h 15mAmerican Airlines
Sun 1/46:27 amSDF - GEG
1 stop8h 39mAmerican Airlines
Deal found 12/15$830
This Delta deal was found by Cheapflights users on 12/12. 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 12/177:10 amGEG - SDF
2 stops13h 49mDelta
Sun 1/44:39 pmSDF - GEG
1 stop9h 37mDelta
Deal found 12/12$832
This United Airlines deal was found by Cheapflights users on 12/14. 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.
Mon 12/226:15 amBOI - SDF
1 stop6h 07mUnited Airlines
Mon 12/293:18 pmSDF - BOI
1 stop9h 22mUnited Airlines
Deal found 12/14$837
This Delta deal was found by Cheapflights users on 12/14. 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 12/221:00 pmBOI - SDF
2 stops8h 03mDelta
Mon 12/294:39 pmSDF - BOI
1 stop9h 14mDelta
Deal found 12/14$842
This Delta deal was found by Cheapflights users on 12/14. 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 12/223:23 pmBOI - SDF
1 stop5h 40mDelta
Wed 12/246:00 amSDF - BOI
1 stop8h 45mDelta
Deal found 12/14$922

Find flight deals from Idaho to Louisville

Keep the following information in mind while searching for Idaho to Louisville flight deals. Data was last updated December 15, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$324
(American Airlines)

One-way from

$162
(American Airlines)

Popular in

March

Cheapest in

August

Average price

$578
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 Idaho to Louisville Intl
Search Deals
One-way flight from Idaho to Louisville Intl
Search Deals
Highest demand for flights based on searches. 6% potential increase in price ($33 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($18 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Idaho 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 December 15, 2025.
Use the filters below to find and compare flights from Idaho to Louisville that are best for you.

Fly from

Idaho

Fly to

Louisville

Route

Depart

Return

Price

SpokaneLouisville

GEG - SDF

GEGSDF

Spokane

Thu 12/25

6:00 am-3:59 pm

1 stop6h 59m

Louisville Intl

Thu 1/1

5:49 pm-9:28 pm

1 stop6h 39m

$324

BoiseLouisville

BOI - SDF

BOISDF

Boise Air Term. Gowen Fld

Thu 1/15

5:30 am-4:16 pm

1 stop8h 46m

Louisville Intl

Sun 1/18

7:00 am-12:46 pm

1 stop7h 46m

$330

JacksonLouisville

JAC - SDF

JACSDF

Jackson Hole

Wed 1/14

2:40 pm-10:24 pm

1 stop5h 44m

Louisville Intl

Sat 1/17

6:00 am-12:19 pm

1 stop8h 19m

$343

SpokaneLouisville

GEG - SDF

GEGSDF

Spokane

Thu 12/25

5:05 am-11:22 pm

2 stops15h 17m

Louisville Intl

Thu 1/1

8:00 am-12:45 pm

1 stop7h 45m

$346

JacksonLouisville

JAC - SDF

JACSDF

Jackson Hole

Thu 3/5

2:13 pm-11:59 pm

1 stop7h 46m

Louisville Intl

Mon 3/9

3:15 pm-8:54 pm

1 stop7h 39m

$349

JacksonLouisville

JAC - SDF

JACSDF

Jackson Hole

Fri 3/6

2:33 pm-10:29 pm

1 stop5h 56m

Louisville Intl

Mon 3/9

3:15 pm-8:54 pm

1 stop7h 39m

$349

Idaho FallsLouisville

IDA - SDF

IDASDF

Idaho Falls Fanning Field

Sat 1/17

2:40 pm-10:24 pm

1 stop5h 44m

Louisville Intl

Wed 1/21

9:00 am-3:31 pm

1 stop8h 31m

$353

Idaho FallsLouisville

IDA - SDF

IDASDF

Idaho Falls Fanning Field

Thu 1/8

2:40 pm-10:24 pm

1 stop5h 44m

Louisville Intl

Mon 1/12

9:00 am-1:30 pm

1 stop6h 30m

$369

SpokaneLouisville

GEG - SDF

GEGSDF

Spokane

Wed 2/18

1:44 pm-10:37 pm

1 stop5h 53m

Louisville Intl

Sun 2/22

5:54 pm-9:52 pm

1 stop6h 58m

$369

HaileyLouisville

SUN - SDF

SUNSDF

Hailey Sun Valley-Friedman

Wed 2/4

2:31 pm-10:24 pm

1 stop5h 53m

Louisville Intl

Sat 2/7

3:22 pm-9:29 pm

1 stop8h 07m

$379

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/14

Showing 1-10 of 33 results
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Best time to book a flight from Idaho to Louisville

Have a flexible travel schedule? Discover the best time to fly to Louisville from Idaho 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 Idaho to Louisville

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

Currently, September is the cheapest month in which you can book a flight from Idaho to Louisville (average of $125). Flying from Idaho to Louisville in December is currently the most expensive (average of $454). 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 ID to SDF?

Find hourly flight availability from Idaho 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 December 15, 2025.

One of the essential ways to save on airfare from Idaho to Louisville is to remain as flexible as possible. Flights that are in the morning tend to be the most expensive. A flight in the evening could potentially save you up to 49% on airfare.

How much does it cost to fly round-trip from Idaho to Louisville?

Related info for your journey

Find useful and relevant information for your journey from Idaho to Louisville. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly into for flights to Louisville from Idaho?

    Louisville Intl (SDF), located 5.3 mi from the city center, is the airport you fly into when you book flights from Idaho to Louisville.

  • How long is the flight from Idaho to Louisville?

    For as low as $343, American Airlines can have you in Louisville from Idaho in 5h 44m. The distance between Idaho and Louisville is about 1352 mi. This flight may include one or multiple stops.

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

    For one-way options, check prices for American Airlines. According to our data, you can fly for as low as $153. Users have also found prices from $171 and $199 on United Airlines and Delta, respectively.

  • What are the most popular routes from Idaho to Louisville?

    Most travelers choose Boise Air Term. Gowen Fld - Louisville Intl, Spokane - Louisville Intl or Jackson Hole - Louisville Intl when deciding on the best route from Idaho to Louisville.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Idaho 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 Idaho to Louisville?

    Currently, September is the cheapest month in which you can book a flight from Idaho to Louisville (average of $125). Flying from Idaho to Louisville in December is currently the most expensive (average of $454). 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 Idaho to Louisville

Discover the top 4 airlines that operate flights from Idaho 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 December 15, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$268Average$450FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$268Average$544FlexibilityNo cancel feeOn-time69%
DeltaCheapest$306Average$452FlexibilityNo cancel feeOn-timeN/A
SouthwestCheapest$363Average$467FlexibilityNo cancel feeOn-time63%

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