$429+ 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 1/30. Fares are subject to change and may not be available on all flights or dates of travel.
SDF — IDA
Oct 6 — Oct 131
Round-trip
1 adult, Economy
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Find cheap flights from Louisville to Idaho Falls with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheap flight deals from Louisville to Idaho Falls
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Cheapest flights from Louisville to Idaho FallsExplore 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 September 6, 2026.
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 September 6, 2026.
This United Airlines deal was found by Cheapflights users on 9/2. 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 9/308:00 am -
1 stop7h 24m
Tue 10/62:28 pm -
1 stop6h 04m
Deal found 9/2![United Airlines logo]()
$429
This United Airlines deal was found by Cheapflights users on 9/5. 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.
Sat 12/59:00 am -
1 stop6h 37m
Wed 12/92:40 pm -
1 stop5h 17m
Deal found 9/5![United Airlines logo]()
$449
This United Airlines deal was found by Cheapflights users on 9/3. 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 12/218:00 am -
1 stop7h 28m
Mon 12/287:00 am -
2 stops11h 56m
Deal found 9/3![United Airlines logo]()
$457
This American Airlines deal was found by Cheapflights users on 9/4. 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 9/296:00 am -
1 stop7h 45m
Sat 10/31:58 pm -
1 stop6h 35m
Deal found 9/4![American Airlines logo]()
$464
This United Airlines deal was found by Cheapflights users on 9/2. 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.
Tue 9/299:04 am -
2 stops8h 17m
Tue 10/62:28 pm -
1 stop6h 04m
Deal found 9/2![United Airlines logo]()
$469
This United Airlines deal was found by Cheapflights users on 9/4. 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 9/263:36 pm -
1 stop7h 18m
Fri 10/22:28 pm -
1 stop6h 04m
Deal found 9/4![United Airlines logo]()
$499
This American Airlines deal was found by Cheapflights users on 9/4. 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 9/306:00 am -
1 stop7h 45m
Sat 10/31:58 pm -
1 stop6h 35m
Deal found 9/4![American Airlines logo]()
$518
This United Airlines deal was found by Cheapflights users on 9/2. 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 9/248:00 am -
1 stop7h 24m
Tue 10/62:28 pm -
1 stop6h 04m
Deal found 9/2![United Airlines logo]()
$529
Best flights from Louisville to Idaho FallsDiscover carefully curated flight deals from Louisville to Idaho Falls that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 6, 2026.
Discover carefully curated flight deals from Louisville to Idaho Falls that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 6, 2026.
This United Airlines deal was found by Cheapflights users on 9/2. 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 1/309:00 am -
1 stop6h 35m
Tue 2/22:35 pm -
1 stop5h 22m
Deal found 9/2![United Airlines logo]()
$429
This United Airlines deal was found by Cheapflights users on 9/5. 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.
Sat 12/59:00 am -
1 stop6h 37m
Wed 12/92:40 pm -
1 stop5h 17m
Deal found 9/5![United Airlines logo]()
$449
This United Airlines deal was found by Cheapflights users on 9/4. 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 9/238:00 am -
1 stop7h 29m
Sat 10/310:35 am -
2 stops11h 24m
Deal found 9/4![United Airlines logo]()
$569
This United Airlines deal was found by Cheapflights users on 9/1. 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 10/105:15 am -
2 stops10h 09m
Tue 10/132:28 pm -
1 stop6h 04m
Deal found 9/1![United Airlines logo]()
$585
Last-minute flights from Louisville to Idaho FallsDiscover last-minute flight deals from Louisville to Idaho Falls. Data last updated September 6, 2026 and is based on user searches.
Discover last-minute flight deals from Louisville to Idaho Falls. Data last updated September 6, 2026 and is based on user searches.
This United Airlines deal was found by Cheapflights users on 9/2. 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 9/248:00 am -
1 stop7h 24m
Tue 10/62:28 pm -
1 stop6h 04m
Deal found 9/2![United Airlines logo]()
$529
This American Airlines deal was found by Cheapflights users on 9/4. 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 9/246:00 am -
1 stop7h 45m
Sat 10/31:58 pm -
1 stop6h 35m
Deal found 9/4![American Airlines logo]()
$554
This United Airlines deal was found by Cheapflights users on 9/2. 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 9/248:00 am -
1 stop7h 24m
Fri 10/22:28 pm -
1 stop6h 04m
Deal found 9/2![United Airlines logo]()
$564
This United Airlines deal was found by Cheapflights users on 9/4. 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 9/263:36 pm -
1 stop7h 18m
Tue 10/62:28 pm -
1 stop6h 04m
Deal found 9/4![United Airlines logo]()
$499
This American Airlines deal was found by Cheapflights users on 9/4. 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 9/296:00 am -
1 stop7h 45m
Sat 10/31:58 pm -
1 stop6h 35m
Deal found 9/4![American Airlines logo]()
$464
This United Airlines deal was found by Cheapflights users on 9/2. 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.
Tue 9/299:04 am -
2 stops8h 17m
Tue 10/62:28 pm -
1 stop6h 04m
Deal found 9/2![United Airlines logo]()
$469
This United Airlines deal was found by Cheapflights users on 9/2. 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 9/308:00 am -
1 stop7h 24m
Tue 10/62:28 pm -
1 stop6h 04m
Deal found 9/2![United Airlines logo]()
$429
This American Airlines deal was found by Cheapflights users on 9/4. 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 9/306:00 am -
1 stop7h 45m
Sat 10/31:58 pm -
1 stop6h 35m
Deal found 9/4![American Airlines logo]()
$518
This American Airlines deal was found by Cheapflights users on 9/5. 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 10/104:18 pm -
1 stop7h 24m
Tue 10/131:39 pm -
1 stop7h 48m
Deal found 9/5![American Airlines logo]()
$552
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 September 6, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $429 (United Airlines) |
Popular in | October |
Cheapest in | February |
Average price | $451 |
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 7,457,451 searches. Data last updated September 6, 2026.
Use the filters below to find and compare flights from Louisville to Idaho Falls that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
LouisvilleIdaho Falls
SDF Louisville Intl - IDA Idaho Falls Fanning Field
SDFIDA
Louisville Intl
Sat 1/30
9:00 am-1:35 pm
1 stop6h 35m
Idaho Falls Fanning Field
Tue 2/2
2:35 pm-9:57 pm
1 stop5h 22m
$429
Quickest round-trip
LouisvilleIdaho Falls
SDF Louisville Intl - IDA Idaho Falls Fanning Field
SDFIDA
Louisville Intl
Sat 12/5
9:00 am-1:37 pm
1 stop6h 37m
Idaho Falls Fanning Field
Wed 12/9
2:40 pm-9:57 pm
1 stop5h 17m
$449
LouisvilleIdaho Falls
SDF Louisville Intl - IDA Idaho Falls Fanning Field
SDFIDA
Louisville Intl
Wed 9/23
8:00 am-1:29 pm
1 stop7h 29m
Idaho Falls Fanning Field
Sat 10/3
10:35 am-11:59 pm
2 stops11h 24m
$569
LouisvilleIdaho Falls
SDF Louisville Intl - IDA Idaho Falls Fanning Field
SDFIDA
Louisville Intl
Sat 10/10
5:15 am-1:24 pm
2 stops10h 09m
Idaho Falls Fanning Field
Tue 10/13
2:28 pm-10:32 pm
1 stop6h 04m
$585
Sorted by cheapest first
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 September.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars |
- 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.
SDF-IDA
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 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 September 6, 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.
Overall
7.4
Comfort
7.3
Boarding
7.7
Crew
8.1
Entertainment
7.1
Food
6.6
Reviews
1 / 20
4.0
OkayChris,Aug 2026
MIA - ORD
Overall
7.4
Comfort
7.3
Boarding
7.7
Crew
8.1
Entertainment
7.1
Food
6.6
Reviews
1 / 20
4.0
OkayChris,Aug 2026
MIA - ORD
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.
Traveling to a place near Idaho Falls?
Book flights to Idaho Falls if you plan to visit one of these locationsRexburg
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Other flights to Idaho Falls
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Check out other popular destinations found by fellow travelers in 2026
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 7,457,451 searches. Data last updated September 6, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$341 | Average$454 | FlexibilityNo cancel fee | On-time69% |