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$426+ Cheap flights from Idaho Falls to Louisville (IDA - SDF)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 5/8. Fares are subject to change and may not be available on all flights or dates of travel.
IDA — SDF
May 24 — May 311
Sun 5/24
Sun 5/31
1 adult, Economy
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Cheap flight deals from Idaho Falls to Louisville

Cheapest flights from Idaho Falls to Louisville
Explore the most affordable flight options available from Idaho Falls to Louisville. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 24, 2026.

This United Airlines deal was found by Cheapflights users on 4/23. 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.
Fri 5/82:31 pm
IDA
-
SDF
1 stop6h 00m
United Airlines
Tue 5/123:37 pm
SDF
-
IDA
1 stop7h 26m
United Airlines
Deal found 4/23$426
This Delta deal was found by Cheapflights users on 4/23. 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 5/86:54 pm
IDA
-
SDF
2 stops13h 26m
Delta
Tue 5/121:05 pm
SDF
-
IDA
2 stops11h 37m
Delta
Deal found 4/23$470
This Delta deal was found by Cheapflights users on 4/21. 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.
Tue 4/286:58 pm
IDA
-
SDF
2 stops11h 54m
Delta
Wed 5/64:42 pm
SDF
-
IDA
2 stops7h 58m
Delta
Deal found 4/21$493
This United Airlines deal was found by Cheapflights users on 4/22. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/302:30 pm
IDA
-
SDF
1 stop6h 29m
United Airlines
Sat 6/68:00 am
SDF
-
IDA
1 stop7h 25m
United Airlines
Deal found 4/22$501
This American Airlines deal was found by Cheapflights users on 4/20. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/161:43 pm
IDA
-
SDF
1 stop5h 58m
American Airlines
Tue 5/266:51 am
SDF
-
IDA
1 stop8h 47m
American Airlines
Deal found 4/20$507
This American Airlines deal was found by Cheapflights users on 4/21. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/2112:44 pm
IDA
-
SDF
1 stop7h 35m
American Airlines
Thu 5/286:51 am
SDF
-
IDA
1 stop8h 47m
American Airlines
Deal found 4/21$508
This United Airlines deal was found by Cheapflights users on 4/21. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/162:31 pm
IDA
-
SDF
1 stop6h 00m
United Airlines
Tue 5/266:00 am
SDF
-
IDA
2 stops11h 34m
United Airlines
Deal found 4/21$514

Find flight deals from Idaho Falls to Louisville

Discover tips and strategies to find the most affordable flight options for your journey from Idaho Falls (IDA) 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 24, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$426
(United Airlines)

Popular in

December

Cheapest in

November
Provider with most accurate pricing for Idaho Falls Fanning Field-Louisville Intl flight deals.
Search Deals
Provider most trusted by Cheapflights users for Idaho Falls Fanning Field-Louisville Intl flights.
Search Deals
From Idaho Falls Fanning Field to Louisville Intl
Search Deals
Highest demand for flights based on searches. 0% potential increase in price ($1 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($20 potential savings vs. average RT price).
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Idaho Falls 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 24, 2026.
Use the filters below to find and compare flights from Idaho Falls to Louisville that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip
Quickest round-trip

Idaho FallsLouisville

IDA - SDF

IDASDF

Idaho Falls Fanning Field

Fri 5/8

2:31 pm-10:31 pm

1 stop6h 00m

Louisville Intl

Tue 5/12

3:37 pm-9:03 pm

1 stop7h 26m

$426

Idaho FallsLouisville

IDA - SDF

IDASDF

Idaho Falls Fanning Field

Sat 5/30

2:30 pm-10:59 pm

1 stop6h 29m

Louisville Intl

Sat 6/6

8:00 am-1:25 pm

1 stop7h 25m

$501

Idaho FallsLouisville

IDA - SDF

IDASDF

Idaho Falls Fanning Field

Sat 5/16

1:43 pm-11:11 pm

1 stop7h 28m

Louisville Intl

Tue 5/26

6:51 am-1:38 pm

1 stop8h 47m

$507

Idaho FallsLouisville

IDA - SDF

IDASDF

Idaho Falls Fanning Field

Sat 5/16

2:31 pm-10:31 pm

1 stop6h 00m

Louisville Intl

Tue 5/26

9:00 am-9:50 am

2 stops26h 50m

$523

Idaho FallsLouisville

IDA - SDF

IDASDF

Idaho Falls Fanning Field

Wed 5/6

10:40 am-10:30 pm

2 stops9h 50m

Louisville Intl

Sun 5/10

5:40 am-1:25 pm

2 stops9h 45m

$628

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/23

Sorted by cheapest first
  • Most accurate provider: When it comes to deals on Idaho Falls-Louisville flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Idaho Falls-Louisville flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Idaho Falls-Louisville flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Idaho Falls-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 Idaho Falls-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 Idaho Falls to Louisville

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

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 24, 2026.
Peruse reviews from past customers who have flown with United Airlines and American Airlines from Idaho Falls to Louisville to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
9,643 reviews

Boarding

7.7

Comfort

7.3

Entertainment

7.1

Overall

7.4

Crew

8.1

Food

6.6

Reviews

1 / 20
8.0
Excellent

Anonymous,Apr 2026

DFW - EWR

The flight was on time. Crew was friendly. Will fly again. The seats was comfortable.
United Airlines
7.4
Good
9,643 reviews
United Airlines
7.4
Good
9,643 reviews

Boarding

7.7

Comfort

7.3

Entertainment

7.1

Overall

7.4

Crew

8.1

Food

6.6

Reviews

1 / 20
8.0
Excellent

Anonymous,Apr 2026

DFW - EWR

The flight was on time. Crew was friendly. Will fly again. The seats was comfortable.
American Airlines
7.1
Good
11,666 reviews
United Airlines
7.4
Good
9,643 reviews

Boarding

7.7

Comfort

7.3

Entertainment

7.1

Overall

7.4

Crew

8.1

Food

6.6

Reviews

1 / 20
8.0
Excellent

Anonymous,Apr 2026

DFW - EWR

The flight was on time. Crew was friendly. Will fly again. The seats was comfortable.

Related info for your journey

Find useful and relevant information for your journey from Idaho Falls 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 Idaho Falls to Louisville?

    Airlines like United Airlines and American Airlines fly from Idaho Falls to Louisville in about 6h. The time it takes to get you to your destination can typically vary by up to 1h 28m. Idaho Falls and Louisville are separated by a distance of 1417 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

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

    American Airlines, at $268, was found to be the cheapest airline from Idaho Falls to Louisville. An alternate airline flying to your destination would be United Airlines. American Airlines is currently priced 49% below the average price you’ll pay for this route.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Idaho Falls 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.

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

Browse thousands of different options on Cheapflights for your next trip

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Top 2 airlines flying from Idaho Falls to Louisville

Discover the top 2 airlines that operate flights from Idaho Falls 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 24, 2026.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$268Average$438FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$268Average$508FlexibilityNo cancel feeOn-time69%

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