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$428+ 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 8/26. Fares are subject to change and may not be available on all flights or dates of travel.
IDA — SDF
Sep 9 — Sep 161
Wed 9/9
Wed 9/16
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 August 10, 2026.

This American Airlines deal was found by Cheapflights users on 8/5. 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 8/261:43 pm -
1 stop5h 42m
Wed 9/27:03 am -
1 stop6h 27m
Deal found 8/5$428
This American Airlines deal was found by Cheapflights users on 8/6. 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.
Sat 8/221:43 pm -
1 stop5h 42m
Wed 8/266:28 am -
1 stop8h 41m
Deal found 8/6$433
This United Airlines deal was found by Cheapflights users on 8/6. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/2210:35 am -
2 stops11h 24m
Wed 8/268:00 am -
1 stop7h 29m
Deal found 8/6$443
This United Airlines deal was found by Cheapflights users on 8/5. 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 8/2610:35 am -
2 stops11h 24m
Wed 9/23:25 pm -
1 stop7h 53m
Deal found 8/5$534
This American Airlines deal was found by Cheapflights users on 8/6. 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.
Sat 9/197:00 am -
1 stop6h 28m
Sat 9/264:19 pm -
1 stop7h 01m
Deal found 8/6$535
This United Airlines deal was found by Cheapflights users on 8/5. 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 9/242:28 pm -
1 stop6h 04m
Sun 9/278:00 am -
1 stop7h 24m
Deal found 8/5$555
This American Airlines deal was found by Cheapflights users on 8/5. 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 9/121:58 pm -
1 stop6h 35m
Thu 9/246:00 am -
1 stop7h 45m
Deal found 8/5$601

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 August 10, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$428
(American Airlines)
Provider with most accurate pricing for Idaho Falls Fanning Field-Louisville Intl flight deals.
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Provider most trusted by Cheapflights users for Idaho Falls Fanning Field-Louisville Intl flights.
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From Idaho Falls Fanning Field to Louisville Intl
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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 August 10, 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 Idaho Falls Fanning Field - SDF Louisville Intl

IDASDF

Idaho Falls Fanning Field

Wed 8/26

1:43 pm-9:25 pm

1 stop5h 42m

Louisville Intl

Wed 9/2

7:03 am-11:30 am

1 stop6h 27m

$428

Idaho FallsLouisville

IDA Idaho Falls Fanning Field - SDF Louisville Intl

IDASDF

Idaho Falls Fanning Field

Sat 8/22

1:43 pm-9:25 pm

1 stop5h 42m

Louisville Intl

Wed 8/26

6:28 am-1:09 pm

1 stop8h 41m

$433

Idaho FallsLouisville

IDA Idaho Falls Fanning Field - SDF Louisville Intl

IDASDF

Idaho Falls Fanning Field

Tue 1/12

2:35 pm-9:57 pm

1 stop5h 22m

Louisville Intl

Sat 1/16

3:20 pm-9:08 pm

1 stop7h 48m

$528

Idaho FallsLouisville

IDA Idaho Falls Fanning Field - SDF Louisville Intl

IDASDF

Idaho Falls Fanning Field

Wed 8/26

10:35 am-11:59 pm

2 stops11h 24m

Louisville Intl

Wed 9/2

3:25 pm-9:18 pm

1 stop7h 53m

$534

Idaho FallsLouisville

IDA Idaho Falls Fanning Field - SDF Louisville Intl

IDASDF

Idaho Falls Fanning Field

Sat 9/19

7:00 am-3:28 pm

1 stop6h 28m

Louisville Intl

Sat 9/26

4:19 pm-9:20 pm

1 stop7h 01m

$535

Idaho FallsLouisville

IDA Idaho Falls Fanning Field - SDF Louisville Intl

IDASDF

Idaho Falls Fanning Field

Thu 9/24

2:28 pm-10:32 pm

1 stop6h 04m

Louisville Intl

Sun 9/27

8:00 am-1:24 pm

1 stop7h 24m

$555

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/5

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 August 10, 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
10,095 reviews

Boarding

7.7

Crew

8.1

Food

6.7

Overall

7.4

Entertainment

7.1

Comfort

7.3

Reviews

1 / 20
2.0
Mediocre

Dawn,Aug 2026

ORD - DEN

I missed my connecting flight because our plane took off ten minutes late and then when we got to the airport another plane was in our shoot waiting to get fueled up and that took 30 minutes so I missed my connecting flight. I asked if I could get off and they assured me the plane would most likely wait for me since they know what time the planes get in because of an app. I was not happy. I had to wait till 7:25 to board the next flight and then that was delayed. Gates changed till 9:20. Terrible
United Airlines
7.4
Good
10,095 reviews
United Airlines
7.4
Good
10,095 reviews

Boarding

7.7

Crew

8.1

Food

6.7

Overall

7.4

Entertainment

7.1

Comfort

7.3

Reviews

1 / 20
2.0
Mediocre

Dawn,Aug 2026

ORD - DEN

I missed my connecting flight because our plane took off ten minutes late and then when we got to the airport another plane was in our shoot waiting to get fueled up and that took 30 minutes so I missed my connecting flight. I asked if I could get off and they assured me the plane would most likely wait for me since they know what time the planes get in because of an app. I was not happy. I had to wait till 7:25 to board the next flight and then that was delayed. Gates changed till 9:20. Terrible
American Airlines
7.1
Good
11,897 reviews
United Airlines
7.4
Good
10,095 reviews

Boarding

7.7

Crew

8.1

Food

6.7

Overall

7.4

Entertainment

7.1

Comfort

7.3

Reviews

1 / 20
2.0
Mediocre

Dawn,Aug 2026

ORD - DEN

I missed my connecting flight because our plane took off ten minutes late and then when we got to the airport another plane was in our shoot waiting to get fueled up and that took 30 minutes so I missed my connecting flight. I asked if I could get off and they assured me the plane would most likely wait for me since they know what time the planes get in because of an app. I was not happy. I had to wait till 7:25 to board the next flight and then that was delayed. Gates changed till 9:20. Terrible

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 American Airlines and United Airlines fly from Idaho Falls to Louisville in about 5h 22m. The time it takes to get you to your destination can typically vary by up to 20m. 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.

  • 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
Corydon
Shepherdsville
Elizabethtown
Jeffersonville
Bardstown

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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 August 10, 2026.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$268Average$534FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$268Average$504FlexibilityNo cancel feeOn-time69%

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