What is the cheapest airline that flies from Idaho to Kentucky?

Delta, Southwest, and American Airlines are the most popular carriers operating from Idaho to Kentucky

How long is the flight from Idaho to Kentucky?

On average, it takes 5h 45m to fly from Idaho to Kentucky if you fly out of Idaho Falls (the most popular airport in Idaho) and into Louisville (the most popular airport in Kentucky). If you’re flying out of Hailey and into Louisville, then the flight time is around 5h 49m.

What airlines fly to Kentucky?

United Airlines, American Airlines and Delta are the top three most popular airlines that fly to Kentucky from Idaho according to our data. United Airlines is the first choice among our users, with 40% of people opting to fly with this airline when traveling to Kentucky. Keep in mind that there are 4 different airlines that fly to Kentucky on a routine basis, so you have a few additional options to choose from.

When did momondo last update prices for flights from Idaho to Kentucky?

Prices for flights from Idaho to Kentucky refresh daily.

How many operators does momondo search for flights from Idaho to Kentucky?

The number of operators available for flights from Idaho to Kentucky is 4 as of November 2026.

How old do you have to be to fly from Idaho to Kentucky?

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 Idaho to Kentucky.

What documentation or ID do you need to fly to Kentucky?

The required travel and health documents for your Kentucky trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Kentucky. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

$193 Cheap Flights from Idaho to Kentucky in 2026/27

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Idaho to Kentucky

Round-trip

One-way

Cheap round-trip flights

Enter your travel dates to find the best prices.

8:00 am - 6:12 pmIDA Idaho Falls Fanning Field-SDF Louisville Intl

8h 12m1 stop Dallas/Fort Worth

4:10 pm - 9:49 pmSDF Louisville Intl-IDA Idaho Falls Fanning Field

7h 39m1 stop Dallas/Fort Worth

$369American Airlines

Sun, Dec 6 - Sat, Dec 12

8:00 am - 6:12 pmIDA Idaho Falls Fanning Field-SDF Louisville Intl

8h 12m1 stop Dallas/Fort Worth

2:02 pm - 11:02 pmSDF Louisville Intl-IDA Idaho Falls Fanning Field

11h 00m2 stops Chicago O'Hare Intl Phoenix Sky Harbor Intl

$374American Airlines

Sun, Dec 6 - Sat, Dec 12

6:15 am - 2:17 pmBOI Boise Air Term. Gowen Fld-SDF Louisville Intl

6h 02m1 stop Denver Intl

3:20 pm - 9:27 pmSDF Louisville Intl-BOI Boise Air Term. Gowen Fld

8h 07m1 stop Denver Intl

$385United Airlines

Sat, Dec 5 - Sat, Dec 12

3:30 pm - 10:55 pmBOI Boise Air Term. Gowen Fld-SDF Louisville Intl

5h 25m1 stop Denver Intl

6:50 am - 11:00 amSDF Louisville Intl-BOI Boise Air Term. Gowen Fld

6h 10m1 stop Denver Intl

$385Southwest

Tue, Dec 8 - Tue, Dec 15

6:15 am - 6:17 pmBOI Boise Air Term. Gowen Fld-SDF Louisville Intl

10h 02m2 stops Denver Intl Chicago O'Hare Intl

3:20 pm - 9:27 pmSDF Louisville Intl-BOI Boise Air Term. Gowen Fld

8h 07m1 stop Denver Intl

$390United Airlines

Sat, Dec 5 - Sat, Dec 12

3:00 pm - 11:02 pmBOI Boise Air Term. Gowen Fld-SDF Louisville Intl

6h 02m1 stop Minneapolis St Paul

6:35 am - 6:38 pmSDF Louisville Intl-BOI Boise Air Term. Gowen Fld

14h 03m2 stops Minneapolis St Paul Seattle/Tacoma Intl

$390Delta

Tue, Dec 8 - Tue, Dec 15

2:21 pm - 11:55 pmBOI Boise Air Term. Gowen Fld-LEX Lexington Blue Grass

7h 34m1 stop Atlanta Hartsfield-Jackson

11:28 am - 8:48 pmLEX Lexington Blue Grass-BOI Boise Air Term. Gowen Fld

11h 20m2 stops Detroit Metropolitan Wayne County Minneapolis St Paul

$394Delta

Thu, Feb 4 - Mon, Feb 8

12:05 pm - 12:10 amBOI Boise Air Term. Gowen Fld-SDF Louisville Intl

10h 05m1 stop Las Vegas Harry Reid Intl

5:35 pm - 1:30 amSDF Louisville Intl-BOI Boise Air Term. Gowen Fld

9h 55m2 stops Nashville Intl Las Vegas Harry Reid Intl

$467Southwest

Mon, Dec 21 - Mon, Jan 4

12:18 pm - 9:10 pmBOI Boise Air Term. Gowen Fld-SDF Louisville Intl

6h 52m1 stop Dallas/Fort Worth

6:00 am - 11:53 amSDF Louisville Intl-BOI Boise Air Term. Gowen Fld

7h 53m1 stop Dallas/Fort Worth

$877Alaska Airlines

Wed, Nov 25 - Mon, Nov 30

5:40 am - 12:15 amBOI Boise Air Term. Gowen Fld-SDF Louisville Intl

16h 35m2 stops Portland Dallas/Fort Worth

6:00 am - 11:53 amSDF Louisville Intl-BOI Boise Air Term. Gowen Fld

7h 53m1 stop Dallas/Fort Worth

$1,570Alaska Airlines

Wed, Nov 25 - Mon, Nov 30

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American Airlines flights from Idaho to Kentucky

Our best American Airlines deals on Idaho to Kentucky flight tickets

American Airlines

Dec 6

IDA8:00 amIdaho Falls Fanning Field

8h 12m

1 stop

SDF6:12 pmLouisville Intl

Dec 12

SDF4:10 pmLouisville Intl

7h 39m

1 stop

IDA9:49 pmIdaho Falls Fanning Field

$369

American Airlines

Dec 6

IDA8:00 amIdaho Falls Fanning Field

8h 12m

1 stop

SDF6:12 pmLouisville Intl

Dec 12

SDF2:02 pmLouisville Intl

11h 00m

2 stops

IDA11:02 pmIdaho Falls Fanning Field

$374

American Airlines

Apr 29

BOI1:29 pmBoise Air Term. Gowen Fld

8h 09m

1 stop

LEX11:38 pmLexington Blue Grass

May 4

LEX7:00 amLexington Blue Grass

7h 49m

1 stop

BOI12:49 pmBoise Air Term. Gowen Fld

$389

United Airlines flights from Idaho to Kentucky

Our best United Airlines deals on Idaho to Kentucky flight tickets

United Airlines

Dec 5

BOI6:15 amBoise Air Term. Gowen Fld

6h 02m

1 stop

SDF2:17 pmLouisville Intl

Dec 12

SDF3:20 pmLouisville Intl

8h 07m

1 stop

BOI9:27 pmBoise Air Term. Gowen Fld

$385

United Airlines

Dec 5

BOI6:15 amBoise Air Term. Gowen Fld

10h 02m

2 stops

SDF6:17 pmLouisville Intl

Dec 12

SDF3:20 pmLouisville Intl

8h 07m

1 stop

BOI9:27 pmBoise Air Term. Gowen Fld

$390

United Airlines

Dec 8

BOI6:15 amBoise Air Term. Gowen Fld

10h 02m

2 stops

SDF6:17 pmLouisville Intl

Dec 15

SDF7:10 amLouisville Intl

6h 57m

1 stop

BOI12:07 pmBoise Air Term. Gowen Fld

$400

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Idaho FallsLouisville

IDA Idaho Falls Fanning Field - SDF Louisville Intl

IDASDF

Idaho Falls Fanning Field

Sun 12/6

8:00 am-6:12 pm

1 stop8h 12m

Louisville Intl

Sat 12/12

4:10 pm-9:49 pm

1 stop7h 39m

$369

Idaho FallsLouisville

IDA Idaho Falls Fanning Field - SDF Louisville Intl

IDASDF

Idaho Falls Fanning Field

Sun 12/6

8:00 am-6:12 pm

1 stop8h 12m

Louisville Intl

Sat 12/12

2:02 pm-11:02 pm

2 stops11h 00m

$374

BoiseLouisville

BOI Boise Air Term. Gowen Fld - SDF Louisville Intl

BOISDF

Boise Air Term. Gowen Fld

Sat 12/5

6:15 am-2:17 pm

1 stop6h 02m

Louisville Intl

Sat 12/12

3:20 pm-9:27 pm

1 stop8h 07m

$385

Quickest round-trip

BoiseLouisville

BOI Boise Air Term. Gowen Fld - SDF Louisville Intl

BOISDF

Boise Air Term. Gowen Fld

Tue 12/8

3:30 pm-10:55 pm

1 stop5h 25m

Louisville Intl

Tue 12/15

6:50 am-11:00 am

1 stop6h 10m

$385

BoiseLouisville

BOI Boise Air Term. Gowen Fld - SDF Louisville Intl

BOISDF

Boise Air Term. Gowen Fld

Sat 12/5

6:15 am-6:17 pm

2 stops10h 02m

Louisville Intl

Sat 12/12

3:20 pm-9:27 pm

1 stop8h 07m

$390

BoiseLouisville

BOI Boise Air Term. Gowen Fld - SDF Louisville Intl

BOISDF

Boise Air Term. Gowen Fld

Tue 12/8

3:00 pm-11:02 pm

1 stop6h 02m

Louisville Intl

Tue 12/15

6:35 am-6:38 pm

2 stops14h 03m

$390

BoiseLexington

BOI Boise Air Term. Gowen Fld - LEX Lexington Blue Grass

BOILEX

Boise Air Term. Gowen Fld

Thu 2/4

2:21 pm-11:55 pm

1 stop7h 34m

Lexington Blue Grass

Mon 2/8

11:28 am-8:48 pm

2 stops11h 20m

$394

BoiseLouisville

BOI Boise Air Term. Gowen Fld - SDF Louisville Intl

BOISDF

Boise Air Term. Gowen Fld

Mon 12/21

12:05 pm-12:10 am

1 stop10h 05m

Louisville Intl

Mon 1/4

5:35 pm-1:30 am

2 stops9h 55m

$467

BoiseLouisville

BOI Boise Air Term. Gowen Fld - SDF Louisville Intl

BOISDF

Boise Air Term. Gowen Fld

Wed 11/25

12:18 pm-9:10 pm

1 stop6h 52m

Louisville Intl

Mon 11/30

6:00 am-11:53 am

1 stop7h 53m

$877

BoiseLouisville

BOI Boise Air Term. Gowen Fld - SDF Louisville Intl

BOISDF

Boise Air Term. Gowen Fld

Wed 11/25

5:40 am-12:15 am

2 stops16h 35m

Louisville Intl

Mon 11/30

6:00 am-11:53 am

1 stop7h 53m

$1,570

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from Idaho to Kentucky

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

Prices

Airlines

Other information

What is the cheapest month to fly to Kentucky?

If you’re not able to fly to Kentucky in May, then September is your next best option. Flight prices from Idaho to Kentucky during September average around $442.

Can stopping save me money on Idaho to Kentucky flights?

You could potentially save up to 54% on your flight if you consider stops on a Idaho to Kentucky flight.

Cheap Idaho to Kentucky flight deals and tips

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

Best Price Found	$193
Fastest flight time	5h 21m
Direct flights	None

The best one-way flight to Kentucky from Idaho in the past 72 hours is $193. The best round-trip flight deal from Idaho to Kentucky found on momondo in the last 72 hours is $369.

The fastest flight from Idaho to Kentucky takes 5h 21m

There are no direct flights from Idaho to Kentucky. There are no popular flight routes from Idaho to Kentucky.

Search flight deals

Frequently asked questions about flying from Idaho to Kentucky

When did momondo last update prices for flights from Idaho to Kentucky?
Prices for flights from Idaho to Kentucky refresh daily.
How many operators does momondo search for flights from Idaho to Kentucky?
The number of operators available for flights from Idaho to Kentucky is 4 as of November 2026.
How old do you have to be to fly from Idaho to Kentucky?
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 Idaho to Kentucky.
What documentation or ID do you need to fly to Kentucky?
The required travel and health documents for your Kentucky trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Kentucky. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

Best airlines flying from Idaho to Kentucky

Compare and see reviews for airlines that fly from Idaho to Kentucky with momondo

Airline	Rating	Free Cancellation	Price
United Airlines	PriceFrom $268	Free Cancellation	Rating 7.3 10,487 reviews	Search United Airlines flights
American Airlines	PriceFrom $280	Free Cancellation	Rating 7.0 12,235 reviews	Search American Airlines flights
Delta	PriceFrom $329	Free Cancellation	Rating 7.8 8,722 reviews	Search Delta flights
Southwest	PriceFrom $372	Free Cancellation	Rating 8.0 4,223 reviews	Search Southwest flights

Why use momondo?

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

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Idaho to Kentucky for you.

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

momondo does allow users to show only those flights to Kentucky from Idaho which offer a flexible booking policy as well as other useful filters and features.

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

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Kentucky from Idaho.

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

Price alerts on flights to Kentucky from Idaho are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.