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Idaho Falls

$314+ 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 3/4. Fares are subject to change and may not be available on all flights or dates of travel.
SDF — IDA
Feb 26 — Mar 51
Thu 2/26
Thu 3/5
1 adult, Economy
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Cheap 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 January 27, 2026.

This United Airlines deal was found by Cheapflights users on 1/27. 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 3/49:00 am
SDF
-
IDA
1 stop6h 30m
United Airlines
Sat 3/142:35 pm
IDA
-
SDF
1 stop5h 24m
United Airlines
Deal found 1/27$314
This American Airlines deal was found by Cheapflights users on 1/27. 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 4/237:37 am
SDF
-
IDA
1 stop7h 36m
American Airlines
Tue 4/281:43 pm
IDA
-
SDF
1 stop7h 28m
American Airlines
Deal found 1/27$459
This United Airlines deal was found by Cheapflights users on 1/26. 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 3/137:05 am
SDF
-
IDA
2 stops8h 25m
United Airlines
Mon 3/302:30 pm
IDA
-
SDF
1 stop6h 09m
United Airlines
Deal found 1/26$467
This United Airlines deal was found by Cheapflights users on 1/26. 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 2/119:00 am
SDF
-
IDA
1 stop8h 31m
United Airlines
Sun 2/152:40 pm
IDA
-
SDF
1 stop5h 57m
United Airlines
Deal found 1/26$512
This United Airlines deal was found by Cheapflights users on 1/25. 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 1/319:00 am
SDF
-
IDA
1 stop6h 30m
United Airlines
Tue 2/32:40 pm
IDA
-
SDF
1 stop5h 44m
United Airlines
Deal found 1/25$519
This Alaska Airlines deal was found by Cheapflights users on 1/27. 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 4/236:00 am
SDF
-
IDA
2 stops11h 29m
Alaska Airlines
Tue 4/286:00 am
IDA
-
SDF
2 stops13h 28m
Alaska Airlines
Deal found 1/27$551

Find 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 January 27, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$432
(United Airlines)

One-way from

$221
(United Airlines)

Popular in

June

Cheapest in

October

Average price

$374
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
One-way flight from Louisville Intl to Idaho Falls Fanning Field
Search Deals
Highest demand for flights based on searches. 24% potential increase in price ($152 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 7% potential price decrease ($32 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in January 2026
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 January 27, 2026.
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

Wed 3/4

9:00 am-1:30 pm

1 stop6h 30m

Idaho Falls Fanning Field

Sat 3/14

2:35 pm-9:59 pm

1 stop5h 24m

$314

LouisvilleIdaho Falls

SDF - IDA

SDFIDA

Louisville Intl

Fri 3/13

7:05 am-1:30 pm

2 stops8h 25m

Idaho Falls Fanning Field

Mon 3/30

2:30 pm-10:39 pm

1 stop6h 09m

$467

LouisvilleIdaho Falls

SDF - IDA

SDFIDA

Louisville Intl

Wed 2/11

9:00 am-3:31 pm

1 stop8h 31m

Idaho Falls Fanning Field

Sun 2/15

2:40 pm-10:37 pm

1 stop5h 57m

$512

LouisvilleIdaho Falls

SDF - IDA

SDFIDA

Louisville Intl

Thu 4/23

6:00 am-3:29 pm

2 stops11h 29m

Idaho Falls Fanning Field

Tue 4/28

6:00 am-9:28 pm

2 stops13h 28m

$551

LouisvilleIdaho Falls

SDF - IDA

SDFIDA

Louisville Intl

Thu 4/23

6:00 am-1:24 pm

3 stops33h 24m

Idaho Falls Fanning Field

Tue 4/28

10:40 am-10:30 pm

2 stops9h 50m

$655

LouisvilleIdaho Falls

SDF - IDA

SDFIDA

Louisville Intl

Fri 3/13

12:07 pm-11:36 pm

2 stops13h 29m

Idaho Falls Fanning Field

Mon 3/30

5:59 pm-10:53 am

2 stops14h 54m

$661

LouisvilleIdaho Falls

SDF - IDA

SDFIDA

Louisville Intl

Fri 4/17

6:00 am-1:13 pm

1 stop9h 13m

Idaho Falls Fanning Field

Sun 4/26

1:43 pm-11:11 pm

1 stop7h 28m

$679

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/27

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 January.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice 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 FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Louisville-Idaho Falls flight deals on Cheapflights vs. FlightHub >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 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 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 $213). Flying from Louisville to Idaho Falls in December is currently the most expensive (average of $366). 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 January 27, 2026.
Get a feel of what it's like to fly with United 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
9,204 reviews

Boarding

7.7

Food

6.6

Crew

8.1

Comfort

7.3

Entertainment

7.1

Overall

7.4

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
9,204 reviews
United Airlines
7.4
Good
9,204 reviews

Boarding

7.7

Food

6.6

Crew

8.1

Comfort

7.3

Entertainment

7.1

Overall

7.4

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 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 8h 25m. United Airlines provides one of the quickest options available for as low as $467. 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 is the cheapest airline to fly from Louisville to Idaho Falls round-trip?

    Flying on United Airlines is currently your cheapest option to Idaho Falls, with prices starting at $341. This flight start at 26% 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 $213). Flying from Louisville to Idaho Falls in December is currently the most expensive (average of $366). 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 airline flying from Louisville to Idaho Falls

Discover the top airline 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 January 27, 2026.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$341Average$398FlexibilityNo cancel feeOn-time69%

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