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 37% 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.

How long is the flight from Idaho to Kentucky?

On average, it takes 5h 27m to fly from Idaho to Kentucky if you fly out of Hailey (the most popular airport in Idaho) and into Louisville (the most popular airport in Kentucky). If you’re flying out of Boise and into Louisville, then the flight time is around 5h 33m.

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

Alaska Airlines is the most popular carrier operating 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 September 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.

$363 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

Last minute

Cheap round-trip flights

Enter your travel dates to find the best prices.

12:26 pm - 8:31 pmBOI Boise Air Term. Gowen Fld-SDF Louisville Intl

6h 05m1 stop Chicago O'Hare Intl

7:00 am - 11:31 amSDF Louisville Intl-BOI Boise Air Term. Gowen Fld

6h 31m1 stop Chicago O'Hare Intl

$363United Airlines

Sat, Oct 17 - Tue, Nov 3

7:00 am - 3:27 pmBOI Boise Air Term. Gowen Fld-SDF Louisville Intl

6h 27m1 stop Dallas/Fort Worth

6:01 am - 1:23 pmSDF Louisville Intl-BOI Boise Air Term. Gowen Fld

9h 22m2 stops Dallas/Fort Worth Phoenix Sky Harbor Intl

$368American Airlines

Sat, Oct 17 - Tue, Nov 3

1:43 pm - 11:56 pmBOI Boise Air Term. Gowen Fld-LEX Lexington Blue Grass

8h 13m1 stop Atlanta Hartsfield-Jackson

6:00 am - 12:39 pmLEX Lexington Blue Grass-BOI Boise Air Term. Gowen Fld

8h 39m1 stop Atlanta Hartsfield-Jackson

$379Delta

Wed, Mar 10 - Sun, Mar 14

12:19 pm - 10:36 pmBOI Boise Air Term. Gowen Fld-LEX Lexington Blue Grass

8h 17m1 stop Dallas/Fort Worth

5:14 am - 12:42 pmLEX Lexington Blue Grass-BOI Boise Air Term. Gowen Fld

9h 28m1 stop Chicago O'Hare Intl

$379American Airlines

Thu, Dec 3 - Sun, Dec 6

1:41 pm - 11:58 pmBOI Boise Air Term. Gowen Fld-LEX Lexington Blue Grass

8h 17m1 stop Atlanta Hartsfield-Jackson

7:05 am - 5:53 pmLEX Lexington Blue Grass-BOI Boise Air Term. Gowen Fld

12h 48m2 stops Atlanta Hartsfield-Jackson Salt Lake City

$384Delta

Wed, Nov 25 - Tue, Dec 1

12:31 pm - 8:52 pmBOI Boise Air Term. Gowen Fld-SDF Louisville Intl

6h 21m1 stop Chicago O'Hare Intl

8:00 am - 1:45 pmSDF Louisville Intl-BOI Boise Air Term. Gowen Fld

7h 45m1 stop Denver Intl

$415United Airlines

Thu, Oct 29 - Sun, Nov 1

1:35 pm - 12:50 amBOI Boise Air Term. Gowen Fld-SDF Louisville Intl

9h 15m1 stop Las Vegas Harry Reid Intl

12:40 pm - 9:30 pmSDF Louisville Intl-BOI Boise Air Term. Gowen Fld

10h 50m2 stops Denver Intl San Diego

$420Southwest

Sun, Feb 21 - Thu, Feb 25

6:00 am - 6:30 pmBOI Boise Air Term. Gowen Fld-SDF Louisville Intl

10h 30m2 stops Las Vegas Harry Reid Intl Houston Hobby

10:15 am - 6:00 pmSDF Louisville Intl-BOI Boise Air Term. Gowen Fld

9h 45m2 stops Phoenix Sky Harbor Intl Las Vegas Harry Reid Intl

$423Southwest

Sat, Oct 17 - Tue, Nov 3

5:43 am - 5:31 pmBOI Boise Air Term. Gowen Fld-SDF Louisville Intl

9h 48m2 stops Portland Chicago O'Hare Intl

6:27 am - 6:03 pmSDF Louisville Intl-BOI Boise Air Term. Gowen Fld

13h 36m2 stops Chicago O'Hare Intl Seattle/Tacoma Intl

$673Alaska Airlines

Sat, Nov 14 - Tue, Nov 17

8:59 pm - 9:38 amBOI Boise Air Term. Gowen Fld-SDF Louisville Intl

10h 39m2 stops Seattle/Tacoma Intl Chicago O'Hare Intl

10:53 am - 11:49 pmSDF Louisville Intl-BOI Boise Air Term. Gowen Fld

14h 56m2 stops Dallas/Fort Worth Seattle/Tacoma Intl

$673Alaska Airlines

Sat, Nov 14 - Tue, Nov 17

Cheap last minute flights

Enter your travel dates to find the best prices.

2:44 pm - 10:09 pmBOI Boise Air Term. Gowen Fld-LEX Lexington Blue Grass

5h 25m1 stop Denver Intl

6:00 am - 11:28 amLEX Lexington Blue Grass-BOI Boise Air Term. Gowen Fld

7h 28m1 stop Chicago O'Hare Intl

$574United Airlines

Fri, Sep 25 - Thu, Oct 1

8:15 am - 10:09 pmBOI Boise Air Term. Gowen Fld-LEX Lexington Blue Grass

11h 54m2 stops San Francisco Denver Intl

6:00 am - 11:28 amLEX Lexington Blue Grass-BOI Boise Air Term. Gowen Fld

7h 28m1 stop Chicago O'Hare Intl

$579United Airlines

Fri, Sep 25 - Thu, Oct 1

1:00 pm - 11:59 pmSUN Hailey Sun Valley-Friedman-LEX Lexington Blue Grass

8h 59m2 stops Salt Lake City Atlanta Hartsfield-Jackson

10:55 am - 10:12 pmLEX Lexington Blue Grass-SUN Hailey Sun Valley-Friedman

13h 17m2 stops Atlanta Hartsfield-Jackson Salt Lake City

$593Delta

Wed, Sep 30 - Sat, Oct 3

7:20 am - 7:42 pmSUN Hailey Sun Valley-Friedman-LEX Lexington Blue Grass

10h 22m2 stops Salt Lake City Atlanta Hartsfield-Jackson

10:55 am - 10:12 pmLEX Lexington Blue Grass-SUN Hailey Sun Valley-Friedman

13h 17m2 stops Atlanta Hartsfield-Jackson Salt Lake City

$593Delta

Tue, Sep 29 - Sat, Oct 3

1:00 pm - 11:59 pmSUN Hailey Sun Valley-Friedman-LEX Lexington Blue Grass

8h 59m2 stops Salt Lake City Atlanta Hartsfield-Jackson

1:04 pm - 10:11 pmLEX Lexington Blue Grass-SUN Hailey Sun Valley-Friedman

11h 07m2 stops Atlanta Hartsfield-Jackson Salt Lake City

$593Delta

Wed, Sep 30 - Tue, Oct 6

7:45 am - 8:00 pmBOI Boise Air Term. Gowen Fld-SDF Louisville Intl

10h 15m1 stop Las Vegas Harry Reid Intl

1:25 pm - 11:10 pmSDF Louisville Intl-BOI Boise Air Term. Gowen Fld

11h 45m1 stop Denver Intl

$692Southwest

Sat, Sep 26 - Sun, Sep 27

7:45 am - 8:00 pmBOI Boise Air Term. Gowen Fld-SDF Louisville Intl

10h 15m1 stop Las Vegas Harry Reid Intl

2:45 pm - 12:30 amSDF Louisville Intl-BOI Boise Air Term. Gowen Fld

11h 45m2 stops Chicago Midway Phoenix Sky Harbor Intl

$692Southwest

Sat, Sep 26 - Sun, Sep 27

2:38 pm - 10:09 pmSUN Hailey Sun Valley-Friedman-LEX Lexington Blue Grass

5h 31m1 stop Denver Intl

9:00 am - 1:53 pmLEX Lexington Blue Grass-SUN Hailey Sun Valley-Friedman

6h 53m1 stop Denver Intl

$721United Airlines

Wed, Sep 30 - Wed, Oct 7

7:48 pm - 10:42 amBOI Boise Air Term. Gowen Fld-LEX Lexington Blue Grass

12h 54m2 stops Seattle/Tacoma Intl Chicago O'Hare Intl

11:13 am - 11:44 pmLEX Lexington Blue Grass-BOI Boise Air Term. Gowen Fld

14h 31m2 stops Chicago O'Hare Intl Seattle/Tacoma Intl

$962Alaska Airlines

Fri, Sep 25 - Thu, Oct 1

6:00 am - 5:31 pmBOI Boise Air Term. Gowen Fld-LEX Lexington Blue Grass

9h 31m2 stops Portland Chicago O'Hare Intl

11:13 am - 11:44 pmLEX Lexington Blue Grass-BOI Boise Air Term. Gowen Fld

14h 31m2 stops Chicago O'Hare Intl Seattle/Tacoma Intl

$1,015Alaska Airlines

Wed, Sep 30 - Thu, Oct 1

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United Airlines flights from Idaho to Kentucky

Our best United Airlines deals on Idaho to Kentucky flight tickets

United Airlines

Oct 17

BOI12:26 pmBoise Air Term. Gowen Fld

6h 05m

1 stop

SDF8:31 pmLouisville Intl

Nov 3

SDF7:00 amLouisville Intl

6h 31m

1 stop

BOI11:31 amBoise Air Term. Gowen Fld

$363

United Airlines

Oct 29

BOI12:31 pmBoise Air Term. Gowen Fld

6h 21m

1 stop

SDF8:52 pmLouisville Intl

Nov 1

SDF8:00 amLouisville Intl

7h 45m

1 stop

BOI1:45 pmBoise Air Term. Gowen Fld

$415

United Airlines

Oct 29

BOI12:31 pmBoise Air Term. Gowen Fld

6h 21m

1 stop

SDF8:52 pmLouisville Intl

Nov 1

SDF5:10 amLouisville Intl

10h 35m

2 stops

BOI1:45 pmBoise Air Term. Gowen Fld

$432

American Airlines flights from Idaho to Kentucky

Our best American Airlines deals on Idaho to Kentucky flight tickets

American Airlines

Oct 17

BOI7:00 amBoise Air Term. Gowen Fld

6h 27m

1 stop

SDF3:27 pmLouisville Intl

Nov 3

SDF6:01 amLouisville Intl

9h 22m

2 stops

BOI1:23 pmBoise Air Term. Gowen Fld

$368

American Airlines

Dec 3

BOI12:19 pmBoise Air Term. Gowen Fld

8h 17m

1 stop

LEX10:36 pmLexington Blue Grass

Dec 6

LEX5:14 amLexington Blue Grass

9h 28m

1 stop

BOI12:42 pmBoise Air Term. Gowen Fld

$379

American Airlines

Nov 25

BOI2:42 pmBoise Air Term. Gowen Fld

7h 33m

1 stop

SDF12:15 amLouisville Intl

Dec 1

SDF3:27 pmLouisville Intl

10h 32m

2 stops

BOI11:59 pmBoise Air Term. Gowen Fld

$392

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Quickest round-trip

BoiseLouisville

BOI Boise Air Term. Gowen Fld - SDF Louisville Intl

BOISDF

Boise Air Term. Gowen Fld

Sat 10/17

12:26 pm-8:31 pm

1 stop6h 05m

Louisville Intl

Tue 11/3

7:00 am-11:31 am

1 stop6h 31m

$363

BoiseLouisville

BOI Boise Air Term. Gowen Fld - SDF Louisville Intl

BOISDF

Boise Air Term. Gowen Fld

Sat 10/17

7:00 am-3:27 pm

1 stop6h 27m

Louisville Intl

Tue 11/3

6:01 am-1:23 pm

2 stops9h 22m

$368

BoiseLexington

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

BOILEX

Boise Air Term. Gowen Fld

Wed 3/10

1:43 pm-11:56 pm

1 stop8h 13m

Lexington Blue Grass

Sun 3/14

6:00 am-12:39 pm

1 stop8h 39m

$379

BoiseLexington

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

BOILEX

Boise Air Term. Gowen Fld

Thu 12/3

12:19 pm-10:36 pm

1 stop8h 17m

Lexington Blue Grass

Sun 12/6

5:14 am-12:42 pm

1 stop9h 28m

$379

BoiseLexington

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

BOILEX

Boise Air Term. Gowen Fld

Wed 11/25

1:41 pm-11:58 pm

1 stop8h 17m

Lexington Blue Grass

Tue 12/1

7:05 am-5:53 pm

2 stops12h 48m

$384

BoiseLouisville

BOI Boise Air Term. Gowen Fld - SDF Louisville Intl

BOISDF

Boise Air Term. Gowen Fld

Thu 10/29

12:31 pm-8:52 pm

1 stop6h 21m

Louisville Intl

Sun 11/1

8:00 am-1:45 pm

1 stop7h 45m

$415

BoiseLouisville

BOI Boise Air Term. Gowen Fld - SDF Louisville Intl

BOISDF

Boise Air Term. Gowen Fld

Sun 2/21

1:35 pm-12:50 am

1 stop9h 15m

Louisville Intl

Thu 2/25

12:40 pm-9:30 pm

2 stops10h 50m

$420

BoiseLouisville

BOI Boise Air Term. Gowen Fld - SDF Louisville Intl

BOISDF

Boise Air Term. Gowen Fld

Sat 10/17

6:00 am-6:30 pm

2 stops10h 30m

Louisville Intl

Tue 11/3

10:15 am-6:00 pm

2 stops9h 45m

$423

BoiseLouisville

BOI Boise Air Term. Gowen Fld - SDF Louisville Intl

BOISDF

Boise Air Term. Gowen Fld

Sat 11/14

5:43 am-5:31 pm

2 stops9h 48m

Louisville Intl

Tue 11/17

6:27 am-6:03 pm

2 stops13h 36m

$673

BoiseLouisville

BOI Boise Air Term. Gowen Fld - SDF Louisville Intl

BOISDF

Boise Air Term. Gowen Fld

Sat 11/14

8:59 pm-9:38 am

2 stops10h 39m

Louisville Intl

Tue 11/17

10:53 am-11:49 pm

2 stops14h 56m

$673

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 13 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 January, then September is your next best option. Flight prices from Idaho to Kentucky during September average around $483.

Can stopping save me money on Idaho to Kentucky flights?

You could potentially save up to 18% 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	$380
Fastest flight time	5h 18m
Direct flights	None

The best one-way flight to Kentucky from Idaho in the past 72 hours is $380. The best round-trip flight deal from Idaho to Kentucky found on momondo in the last 72 hours is $363.

The fastest flight from Idaho to Kentucky takes 5h 18m

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 September 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 7.4 10,233 reviews	Search United Airlines flights
American Airlines	PriceFrom $308	Free Cancellation	Rating 7.0 12,075 reviews	Search American Airlines flights
Delta	PriceFrom $334	Free Cancellation	Rating 7.8 8,595 reviews	Search Delta flights
Southwest	PriceFrom $372	Free Cancellation	Rating 8.0 4,199 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.