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Idaho Falls

$419+ Cheap flights from Louisville to Idaho Falls (SDF - IDA)

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 11/12. Fares are subject to change and may not be available on all flights or dates of travel.
SDF — IDA
Nov 28 — Dec 51
Fri 11/28
Fri 12/5
1 adult, Economy
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Find flight deals from Louisville to Idaho Falls

Cheapest flights from Louisville to Idaho Falls
Explore the most affordable flight options available from Louisville to Idaho Falls. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 29, 2025.

This Delta deal was found by Cheapflights users on 10/28. 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 11/1210:37 amSDF - IDA
2 stops13h 42mDelta
Sun 11/166:57 pmIDA - SDF
2 stops12h 55mDelta
Deal found 10/28$419
This American Airlines deal was found by Cheapflights users on 10/29. 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 11/137:13 amSDF - IDA
1 stop8h 14mAmerican Airlines
Mon 11/171:58 pmIDA - SDF
1 stop6h 03mAmerican Airlines
Deal found 10/29$460
This Alaska Airlines deal was found by Cheapflights users on 10/27. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/181:50 pmSDF - IDA
2 stops12h 17mAlaska Airlines
Tue 1/66:00 amIDA - SDF
2 stops15h 19mAlaska Airlines
Deal found 10/27$519
This United Airlines deal was found by Cheapflights users on 10/27. 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 12/173:33 pmSDF - IDA
1 stop7h 39mUnited Airlines
Tue 1/62:40 pmIDA - SDF
1 stop6h 04mUnited Airlines
Deal found 10/27$531
This Delta deal was found by Cheapflights users on 10/29. 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.
Thu 11/132:22 pmSDF - IDA
2 stops9h 57mDelta
Mon 11/176:57 pmIDA - SDF
2 stops12h 55mDelta
Deal found 10/29$549
This American Airlines deal was found by Cheapflights users on 10/28. 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 11/127:13 amSDF - IDA
1 stop8h 15mAmerican Airlines
Sun 11/161:58 pmIDA - SDF
1 stop6h 02mAmerican Airlines
Deal found 10/28$569
This United Airlines deal was found by Cheapflights users on 10/27. 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 12/228:00 amSDF - IDA
1 stop7h 30mUnited Airlines
Tue 1/62:40 pmIDA - SDF
1 stop6h 04mUnited Airlines
Deal found 10/27$586
This United Airlines deal was found by Cheapflights users on 10/27. 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 12/183:18 pmSDF - IDA
1 stop20h 40mUnited Airlines
Tue 1/62:40 pmIDA - SDF
1 stop6h 04mUnited Airlines
Deal found 10/27$592
This American Airlines deal was found by Cheapflights users on 10/27. 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 12/186:29 amSDF - IDA
1 stop8h 17mAmerican Airlines
Wed 12/311:16 pmIDA - SDF
1 stop6h 18mAmerican Airlines
Deal found 10/27$594
This United Airlines deal was found by Cheapflights users on 10/27. 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 12/173:33 pmSDF - IDA
1 stop7h 39mUnited Airlines
Thu 1/12:30 pmIDA - SDF
1 stop5h 54mUnited Airlines
Deal found 10/27$596
This Alaska Airlines deal was found by Cheapflights users on 10/27. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/191:50 pmSDF - IDA
2 stops12h 17mAlaska Airlines
Tue 1/66:00 amIDA - SDF
2 stops15h 19mAlaska Airlines
Deal found 10/27$604

Cheap flight deals from Louisville to Idaho Falls

Discover tips and strategies to find the most affordable flight options for your journey from Louisville (SDF) to Idaho Falls (IDA). 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 October 29, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$419
(Delta)

Popular in

June

Cheapest in

October

Average price

$351
Provider with most accurate pricing for Louisville Intl-Idaho Falls Fanning Field flight deals.
Search Deals
Provider most trusted by Cheapflights users for Louisville Intl-Idaho Falls Fanning Field flights.
Search Deals
From Louisville Intl to Idaho Falls Fanning Field
Search Deals
Highest demand for flights based on searches. 18% potential increase in price ($114 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease ($25 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in October 2025
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Louisville to Idaho Falls 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 October 29, 2025.
Use the filters below to find and compare flights from Louisville to Idaho Falls that are best for you.

Fly from

Louisville

Fly to

Idaho Falls

Route

Depart

Return

Price

LouisvilleIdaho Falls

SDF - IDA

SDFIDA

Louisville Intl

Fri 1/16

9:00 am-1:30 pm

1 stop6h 30m

Idaho Falls Fanning Field

Mon 1/19

2:40 pm-10:44 pm

1 stop6h 04m

$424

LouisvilleIdaho Falls

SDF - IDA

SDFIDA

Louisville Intl

Tue 3/3

12:40 pm-10:21 pm

2 stops11h 41m

Idaho Falls Fanning Field

Wed 3/4

6:45 pm-9:34 am

2 stops12h 49m

$445

LouisvilleIdaho Falls

SDF - IDA

SDFIDA

Louisville Intl

Tue 3/3

9:00 am-1:30 pm

1 stop6h 30m

Idaho Falls Fanning Field

Wed 3/4

6:35 am-2:19 pm

1 stop5h 44m

$451

LouisvilleIdaho Falls

SDF - IDA

SDFIDA

Louisville Intl

Thu 11/13

7:13 am-1:27 pm

1 stop8h 14m

Idaho Falls Fanning Field

Mon 11/17

1:58 pm-10:01 pm

1 stop6h 03m

$460

LouisvilleIdaho Falls

SDF - IDA

SDFIDA

Louisville Intl

Thu 12/18

1:50 pm-12:07 am

2 stops12h 17m

Idaho Falls Fanning Field

Tue 1/6

6:00 am-11:19 pm

2 stops15h 19m

$519

LouisvilleIdaho Falls

SDF - IDA

SDFIDA

Louisville Intl

Wed 12/17

3:33 pm-9:12 pm

1 stop7h 39m

Idaho Falls Fanning Field

Tue 1/6

2:40 pm-10:44 pm

1 stop6h 04m

$531

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/27

Compare providers for flights from Louisville to Idaho Falls

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Louisville to Idaho Falls in October.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star
eDreamsPrice Accuracy3 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

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

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

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

Currently, November is the cheapest month in which you can book a flight from Louisville to Idaho Falls (average of $246). Flying from Louisville to Idaho Falls in February is currently the most expensive (average of $466). 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.

Reviews of airlines servicing Idaho Falls

Get insights into the airlines that provide service to Idaho Falls. 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 Idaho Falls. Reviews last updated October 29, 2025.
Get a feel of what it's like to fly with United Airlines and American Airlines from Louisville to Idaho Falls by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
8,999 reviews

Crew

8.1

Overall

7.4

Comfort

7.3

Food

6.6

Boarding

7.7

Entertainment

7.1

Reviews

1 / 20
2.0
Mediocre

Sebrena,Oct 2025

IAH - RSW

The worst that I have ever experienced in my life so bad if it was free I'm not ever going to use your Airline again I dont believe ..... very disappointed 😞 😔0000000000000
United Airlines
7.4
Good
8,999 reviews
United Airlines
7.4
Good
8,999 reviews

Crew

8.1

Overall

7.4

Comfort

7.3

Food

6.6

Boarding

7.7

Entertainment

7.1

Reviews

1 / 20
2.0
Mediocre

Sebrena,Oct 2025

IAH - RSW

The worst that I have ever experienced in my life so bad if it was free I'm not ever going to use your Airline again I dont believe ..... very disappointed 😞 😔0000000000000
American Airlines
7.2
Good
11,032 reviews
United Airlines
7.4
Good
8,999 reviews

Crew

8.1

Overall

7.4

Comfort

7.3

Food

6.6

Boarding

7.7

Entertainment

7.1

Reviews

1 / 20
2.0
Mediocre

Sebrena,Oct 2025

IAH - RSW

The worst that I have ever experienced in my life so bad if it was free I'm not ever going to use your Airline again I dont believe ..... very disappointed 😞 😔0000000000000

Related info for your journey

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

    A quick flight from Louisville to Idaho Falls can take about 6h 30m. United Airlines provides one of the quickest options available for as low as $424. There are 1417 mi between Louisville and Idaho Falls. 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 Louisville to Idaho Falls round-trip?

    Flying on American Airlines is currently your cheapest option to Idaho Falls, with prices starting at $323. Another option worth looking into is United Airlines, starting at $343 round trip. These flights start at 35% lower than the current average price 3 months from now.

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

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

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

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

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

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

    Currently, November is the cheapest month in which you can book a flight from Louisville to Idaho Falls (average of $246). Flying from Louisville to Idaho Falls in February is currently the most expensive (average of $466). 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 Idaho Falls?

Book flights to Idaho Falls if you plan to visit one of these locations
Rexburg

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Top 2 airlines flying from Louisville to Idaho Falls

Discover the top 2 airlines that operate flights from Louisville to Idaho Falls. 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 October 29, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$323Average$488FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$343Average$488FlexibilityNo cancel feeOn-time69%

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