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Cheap flights from Kentucky to Idaho Falls from $146

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Kentucky to Idaho Falls departing on 10/12. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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0 bags

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Find the cheapest flights from Kentucky to Idaho Falls

Cheap round-trip flights

Logo
3:42 pm - 8:31 pmBNA-IDA
29h 49m2 stops
Logo
7:56 pm - 12:59 amIDA-BNA
28h 03m1 stop
$338
Find Deal
Sat, Nov 15 - Mon, Nov 17
Delta Logo
6:12 pm - 10:19 pmLEX-IDA
30h 07m2 stops
Delta Logo
6:57 pm - 9:27 amIDA-LEX
12h 30m2 stops
$363Delta
Find Deal
Sat, Nov 15 - Tue, Nov 18
Alaska Airlines Logo
6:30 pm - 11:59 pmCVG-IDA
7h 29m1 stop
Alaska Airlines Logo
3:50 pm - 5:30 pmIDA-CVG
23h 40m1 stop
$371Alaska Airlines
Find Deal
Thu, Oct 30 - Wed, Nov 5
Delta Logo
6:12 pm - 10:19 pmLEX-IDA
30h 07m2 stops
Delta Logo
6:57 pm - 9:27 amIDA-LEX
12h 30m2 stops
$373Delta
Find Deal
Sat, Nov 15 - Tue, Nov 18
United Airlines Logo
4:04 pm - 9:14 pmTYS-IDA
7h 10m1 stop
United Airlines Logo
5:00 am - 3:00 pmIDA-TYS
8h 00m1 stop
$379United Airlines
Find Deal
Sat, Dec 20 - Sat, Dec 27
Alaska Airlines Logo
7:15 am - 3:13 pmBNA-IDA
8h 58m1 stop
Alaska Airlines Logo
6:05 am - 2:49 pmIDA-BNA
7h 44m1 stop
$383Alaska Airlines
Find Deal
Tue, Oct 28 - Sat, Nov 1
United Airlines Logo
7:00 am - 3:22 pmTYS-IDA
10h 22m2 stops
United Airlines Logo
5:00 am - 3:00 pmIDA-TYS
8h 00m1 stop
$384United Airlines
Find Deal
Sat, Dec 20 - Sat, Dec 27
American Airlines Logo
5:31 am - 1:28 pmCVG-IDA
9h 57m1 stop
American Airlines Logo
1:58 pm - 10:34 pmIDA-CVG
6h 36m1 stop
$387American Airlines
Find Deal
Fri, Nov 7 - Mon, Nov 10
Hawaiian Airlines Logo
4:01 pm - 11:59 pmBNA-IDA
8h 58m1 stop
Hawaiian Airlines Logo
3:50 pm - 12:17 amIDA-BNA
7h 27m1 stop
$388Hawaiian Airlines
Find Deal
Fri, Nov 14 - Mon, Nov 17
American Airlines Logo
2:11 pm - 9:48 pmTYS-IDA
9h 37m1 stop
American Airlines Logo
12:55 pm - 9:43 pmIDA-TYS
6h 48m1 stop
$398American Airlines
Find Deal
Wed, Oct 8 - Wed, Oct 22

United Airlines flights from Kentucky to Idaho Falls

Our best United Airlines deals on Kentucky to Idaho Falls flight tickets
United Airlines
Sep 6
SDF9:05 amLouisville Intl
10h 18m
2 stops
IDA5:23 pmIdaho Falls Fanning Field
Sep 30
IDA2:35 pmIdaho Falls Fanning Field
5h 55m
1 stop
SDF10:30 pmLouisville Intl
$359
Find similar
United Airlines
Dec 20
TYS4:04 pmKnoxville McGhee Tyson
7h 10m
1 stop
IDA9:14 pmIdaho Falls Fanning Field
Dec 27
IDA5:00 amIdaho Falls Fanning Field
8h 00m
1 stop
TYS3:00 pmKnoxville McGhee Tyson
$379
Find similar
United Airlines
Dec 20
TYS7:00 amKnoxville McGhee Tyson
10h 22m
2 stops
IDA3:22 pmIdaho Falls Fanning Field
Dec 27
IDA5:00 amIdaho Falls Fanning Field
8h 00m
1 stop
TYS3:00 pmKnoxville McGhee Tyson
$384
Find similar

Delta flights from Kentucky to Idaho Falls

Our best Delta deals on Kentucky to Idaho Falls flight tickets
Delta
Nov 15
LEX6:12 pmLexington Blue Grass
30h 07m
2 stops
IDA10:19 pmIdaho Falls Fanning Field
Nov 18
IDA6:57 pmIdaho Falls Fanning Field
12h 30m
2 stops
LEX9:27 amLexington Blue Grass
$363
Find similar
Delta
Nov 15
LEX6:12 pmLexington Blue Grass
30h 07m
2 stops
IDA10:19 pmIdaho Falls Fanning Field
Nov 18
IDA6:57 pmIdaho Falls Fanning Field
12h 30m
2 stops
LEX9:27 amLexington Blue Grass
$373
Find similar
Delta
Oct 28
BNA5:15 amNashville Intl
8h 18m
2 stops
IDA12:33 pmIdaho Falls Fanning Field
Nov 1
IDA1:15 pmIdaho Falls Fanning Field
7h 45m
1 stop
BNA10:00 pmNashville Intl
$420
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Kentucky 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, momondo users made 832,500 searches. Data last updated September 4, 2025.
Use the filters below to find and compare flights from Kentucky to Idaho Falls that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

NashvilleIdaho Falls

BNA - IDA

BNAIDA

Nashville Intl

Sat 11/15

3:42 pm-8:31 pm

2 stops29h 49m

Idaho Falls Fanning Field

Mon 11/17

7:56 pm-12:59 am

1 stop28h 03m

$338

LexingtonIdaho Falls

LEX - IDA

LEXIDA

Lexington Blue Grass

Sat 11/15

6:12 pm-10:19 pm

2 stops30h 07m

Idaho Falls Fanning Field

Tue 11/18

6:57 pm-9:27 am

2 stops12h 30m

$363

CincinnatiIdaho Falls

CVG - IDA

CVGIDA

Cincinnati Cinci./N. Kentucky

Thu 10/30

6:30 pm-11:59 pm

1 stop7h 29m

Idaho Falls Fanning Field

Wed 11/5

3:50 pm-5:30 pm

1 stop23h 40m

$371

LexingtonIdaho Falls

LEX - IDA

LEXIDA

Lexington Blue Grass

Sat 11/15

6:12 pm-10:19 pm

2 stops30h 07m

Idaho Falls Fanning Field

Tue 11/18

6:57 pm-9:27 am

2 stops12h 30m

$373

KnoxvilleIdaho Falls

TYS - IDA

TYSIDA

Knoxville McGhee Tyson

Sat 12/20

4:04 pm-9:14 pm

1 stop7h 10m

Idaho Falls Fanning Field

Sat 12/27

5:00 am-3:00 pm

1 stop8h 00m

$379

NashvilleIdaho Falls

BNA - IDA

BNAIDA

Nashville Intl

Tue 10/28

7:15 am-3:13 pm

1 stop8h 58m

Idaho Falls Fanning Field

Sat 11/1

6:05 am-2:49 pm

1 stop7h 44m

$383

KnoxvilleIdaho Falls

TYS - IDA

TYSIDA

Knoxville McGhee Tyson

Sat 12/20

7:00 am-3:22 pm

2 stops10h 22m

Idaho Falls Fanning Field

Sat 12/27

5:00 am-3:00 pm

1 stop8h 00m

$384

CincinnatiIdaho Falls

CVG - IDA

CVGIDA

Cincinnati Cinci./N. Kentucky

Fri 11/7

5:31 am-1:28 pm

1 stop9h 57m

Idaho Falls Fanning Field

Mon 11/10

1:58 pm-10:34 pm

1 stop6h 36m

$387

NashvilleIdaho Falls

BNA - IDA

BNAIDA

Nashville Intl

Fri 11/14

4:01 pm-11:59 pm

1 stop8h 58m

Idaho Falls Fanning Field

Mon 11/17

3:50 pm-12:17 am

1 stop7h 27m

$388

KnoxvilleIdaho Falls

TYS - IDA

TYSIDA

Knoxville McGhee Tyson

Wed 10/8

2:11 pm-9:48 pm

1 stop9h 37m

Idaho Falls Fanning Field

Wed 10/22

12:55 pm-9:43 pm

1 stop6h 48m

$398

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Idaho Falls from

How to get the cheapest flight ticket from Kentucky to Idaho Falls

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest day to depart on your flight to Idaho Falls?

Our data shows that Thursday is the least expensive day to fly to Idaho Falls. Tickets to fly out on this day can be as low as $511. Be sure to avoid booking your departure on a Sunday as prices are generally higher than usual. According to our data, the average ticket price to Idaho Falls on Sunday is $799.

What is the cheapest time of day to depart on your flight to Idaho Falls?

Our most recent data shows that the best time of day to fly to Idaho Falls is in the morning. Flights from Kentucky to Idaho Falls during this time can be as low as $632. Try not to purchase tickets in the afternoon because they tend to be around $723. Of course, these prices can vary depending on the time of year and what airport you fly to.

Cheap Kentucky to Idaho Falls flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Kentucky to Idaho Falls

Direct flights

None
There are no direct flights from Kentucky to Idaho Falls. There are no popular flight routes from Kentucky to Idaho Falls.
Search flight deals

  • When did momondo last update prices for flights from Kentucky to Idaho Falls Fanning Field Airport?

    Prices for flights from Kentucky to Idaho Falls Fanning Field Airport were last updated today.

  • How many operators does momondo search for flights from Kentucky to Idaho Falls Fanning Field Airport?

  • How old do you have to be to fly from Kentucky to Idaho Falls Fanning Field Airport?

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Kentucky to Idaho Falls Fanning Field Airport.

  • What documentation or ID do you need to fly to Idaho Falls Fanning Field Airport?

    The travel and health documents required for your trip to Idaho Falls Fanning Field Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Idaho Falls Fanning Field Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

Best airlines flying from Kentucky to Idaho Falls

Compare and see reviews for airlines that fly from Kentucky to Idaho Falls with momondo
Airline
Rating
Free Cancellation
Price
American AirlinesPriceFrom $323Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
United AirlinesPriceFrom $337Free CancellationRating
7.4
8,937 reviews
Search United Airlines flights

Traveling to a place near Idaho Falls?

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

Why use momondo?

Why should I use momondo to find a flight deal from Kentucky to Idaho Falls?

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Kentucky to Idaho Falls. Millions of users trust and use momondo every year so you are in good hands.

Can I find flights from Kentucky to Idaho Falls with flexible booking policies on momondo?

Flights from Kentucky to Idaho Falls with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

How can momondo help me find flights from Kentucky to Idaho Falls?

momondo helps you find the best flight between Kentucky and Idaho Falls by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

I’m not ready to book a flight from Kentucky to Idaho Falls right now. Can momondo alert me if prices change?

Yes momondo offers price alerts on flights to Idaho Falls from Kentucky. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.

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