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$399+ 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 2/25. Fares are subject to change and may not be available on all flights or dates of travel.
IDA — SDF
Mar 15 — Mar 221
Sun 3/15
Sun 3/22
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 February 13, 2026.

This American Airlines deal was found by Cheapflights users on 2/9. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/252:18 pm
IDA
-
SDF
1 stop7h 55m
American Airlines
Sun 3/16:00 am
SDF
-
IDA
1 stop9h 48m
American Airlines
Deal found 2/9$399
This United Airlines deal was found by Cheapflights users on 2/11. 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 2/252:40 pm
IDA
-
SDF
1 stop5h 57m
United Airlines
Sun 3/15:35 am
SDF
-
IDA
2 stops9h 55m
United Airlines
Deal found 2/11$424
This United Airlines deal was found by Cheapflights users on 2/13. 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.
Sat 5/162:31 pm
IDA
-
SDF
1 stop6h 00m
United Airlines
Tue 5/265:35 am
SDF
-
IDA
2 stops9h 50m
United Airlines
Deal found 2/13$473
This American Airlines deal was found by Cheapflights users on 2/11. 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.
Tue 2/242:18 pm
IDA
-
SDF
1 stop7h 55m
American Airlines
Sat 2/286:00 am
SDF
-
IDA
1 stop9h 48m
American Airlines
Deal found 2/11$485
This United Airlines deal was found by Cheapflights users on 2/10. 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 2/182:40 pm
IDA
-
SDF
1 stop5h 57m
United Airlines
Sat 2/213:15 pm
SDF
-
IDA
1 stop7h 43m
United Airlines
Deal found 2/10$489

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 February 13, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$399
(American Airlines)

Popular in

December

Cheapest in

November

Average price

$429
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 ($5 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 February 2026
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 February 13, 2026.
Use the filters below to find and compare flights from Idaho Falls to Louisville that are best for you.

Fly from

Idaho Falls

Fly to

Louisville

Route

Depart

Return

Price

Idaho FallsLouisville

IDA - SDF

IDASDF

Idaho Falls Fanning Field

Wed 2/25

2:18 pm-12:13 am

1 stop7h 55m

Louisville Intl

Sun 3/1

6:00 am-1:48 pm

1 stop9h 48m

$399

Idaho FallsLouisville

IDA - SDF

IDASDF

Idaho Falls Fanning Field

Sat 5/16

1:43 pm-9:41 pm

1 stop5h 58m

Louisville Intl

Tue 5/26

6:46 am-1:23 pm

1 stop8h 37m

$399

Idaho FallsLouisville

IDA - SDF

IDASDF

Idaho Falls Fanning Field

Wed 2/25

2:40 pm-10:37 pm

1 stop5h 57m

Louisville Intl

Sun 3/1

5:35 am-1:30 pm

2 stops9h 55m

$424

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

5:35 am-1:24 pm

2 stops9h 49m

$473

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/9

  • 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.

Cheapflights Insights

Everything you need to know about your flight from Idaho Falls to Louisville

How much does it cost to fly round-trip from Idaho Falls 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 February 13, 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
9,284 reviews

Overall

7.4

Entertainment

7.1

Food

6.6

Boarding

7.7

Comfort

7.3

Crew

8.1

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

TYS - IAD

It was a short flight, so no time for amenities. Just glad everything was quick and easy from boarding to arriving at my destination with my family
United Airlines
7.4
Good
9,284 reviews
United Airlines
7.4
Good
9,284 reviews

Overall

7.4

Entertainment

7.1

Food

6.6

Boarding

7.7

Comfort

7.3

Crew

8.1

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

TYS - IAD

It was a short flight, so no time for amenities. Just glad everything was quick and easy from boarding to arriving at my destination with my family
American Airlines
7.2
Good
11,279 reviews
United Airlines
7.4
Good
9,284 reviews

Overall

7.4

Entertainment

7.1

Food

6.6

Boarding

7.7

Comfort

7.3

Crew

8.1

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

TYS - IAD

It was a short flight, so no time for amenities. Just glad everything was quick and easy from boarding to arriving at my destination with my family

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 fly from Idaho Falls to Louisville in about 7h 55m. The time it takes to get you to your destination can typically vary by up to . Idaho Falls and Louisville are separated by a distance of 1417 mi.

  • 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
Jeffersonville
Elizabethtown
Corydon
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 February 13, 2026.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$268Average$438FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$268Average$504FlexibilityNo cancel feeOn-time69%

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