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

Frontier, United Airlines, and American Airlines are the most popular carriers operating from Kentucky to Idaho

What airlines fly to Idaho?

American Airlines, Delta and United Airlines are the top three most popular airlines that fly to Idaho from Kentucky according to our data. American Airlines is the first choice among our users, with 31% of people opting to fly with this airline when traveling to Idaho. Keep in mind that there are 4 different airlines that fly to Idaho on a routine basis, so you have a few additional options to choose from.

How long is the flight from Kentucky to Idaho?

Flight times from Kentucky to Idaho vary, but if you’re flying out of Louisville and flying into Boise (one of the most popular routes), then the duration is 5h 50m on average. Another popular route from Kentucky to Idaho is flying from Lexington to Boise, which will take roughly 7h 33m. Keep in mind that layovers or delays could extend your travel time.

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

Prices for flights from Kentucky to Idaho are refreshed on a daily basis.

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

As of February 2026, there are 6 operators available to choose from for flights from Kentucky to Idaho.

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

The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Kentucky to Idaho.

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

The required travel and health documents for your Idaho 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 Idaho. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

$95 Cheap Flights from Kentucky to Idaho in 2026

1 adult

0 bags

Discover deals from 900+ travel sites with momondo.

Save money when you book flights with momondo

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Not ready to book? to track prices.

Search flight deals

Find the cheapest flights from Kentucky to Idaho

Round-trip

One-way

Last minute

Cheap round-trip flights

Enter your travel dates to find the best prices.

7:00 am - 12:14 pm

CVG

GEG

8h 14m

1 stop

2:00 pm - 12:37 am

GEG

CVG

7h 37m

1 stop

$220Frontier

Sun, Mar 1 - Thu, Mar 26

3:54 pm - 9:37 pm

BNA

GEG

7h 43m

1 stop

2:45 pm - 11:59 pm

GEG

BNA

7h 14m

1 stop

$257Alaska Airlines

Tue, Mar 10 - Sat, May 2

10:30 am - 9:29 pm

BNA

GEG

12h 59m

2 stops

2:08 pm - 10:52 pm

GEG

BNA

6h 44m

1 stop

$272Delta

Tue, Mar 10 - Sat, May 2

1:50 pm - 7:02 pm

BNA

JAC

6h 12m

1 stop

1:10 pm - 9:38 pm

JAC

BNA

7h 28m

1 stop

$273Delta

Fri, Mar 27 - Fri, Apr 3

1:26 pm - 11:14 pm

BNA

GEG

11h 48m

2 stops

6:34 am - 8:00 pm

GEG

BNA

11h 26m

2 stops

$297American Airlines

Tue, Mar 10 - Sat, May 2

8:27 am - 2:26 pm

BNA

JAC

6h 59m

1 stop

3:06 pm - 10:59 pm

JAC

BNA

6h 53m

1 stop

$301American Airlines

Thu, Apr 2 - Sun, Apr 5

9:00 am - 1:21 pm

CVG

JAC

6h 21m

1 stop

9:05 am - 6:50 pm

JAC

CVG

7h 45m

1 stop

$301United Airlines

Mon, Mar 16 - Sat, Mar 28

10:11 am - 8:54 pm

BNA

JAC

11h 43m

2 stops

2:33 pm - 9:48 pm

JAC

BNA

6h 15m

1 stop

$306United Airlines

Tue, Mar 17 - Wed, Mar 25

6:40 am - 4:05 pm

TYS

GEG

12h 25m

2 stops

5:35 pm - 12:00 pm

GEG

TYS

15h 25m

2 stops

$407Southwest

Sat, Apr 25 - Mon, May 4

12:20 pm - 4:05 pm

TYS

GEG

6h 45m

1 stop

5:35 pm - 12:00 pm

GEG

TYS

15h 25m

2 stops

$422Southwest

Sat, Apr 25 - Mon, May 4

Southwest flights from Kentucky to Idaho

Our best Southwest deals on Kentucky to Idaho flight tickets

Southwest

May 12

BNA6:10 amNashville Intl

6h 05m

1 stop

GEG10:15 amSpokane

May 18

GEG2:50 pmSpokane

5h 50m

1 stop

BNA10:40 pmNashville Intl

$304

Southwest

Mar 31

BNA4:05 pmNashville Intl

8h 45m

2 stops

BOI11:50 pmBoise Air Term. Gowen Fld

Apr 7

BOI10:05 amBoise Air Term. Gowen Fld

7h 00m

2 stops

BNA6:05 pmNashville Intl

$348

Southwest

May 16

BNA7:50 amNashville Intl

9h 25m

2 stops

BOI4:15 pmBoise Air Term. Gowen Fld

May 19

BOI5:15 pmBoise Air Term. Gowen Fld

11h 00m

1 stop

BNA5:15 amNashville Intl

$349

Delta flights from Kentucky to Idaho

Our best Delta deals on Kentucky to Idaho flight tickets

Delta

Mar 10

BNA10:30 amNashville Intl

12h 59m

2 stops

GEG9:29 pmSpokane

May 2

GEG2:08 pmSpokane

6h 44m

1 stop

BNA10:52 pmNashville Intl

$272

Delta

Apr 1

BNA7:25 amNashville Intl

5h 45m

1 stop

JAC12:10 pmJackson Hole

Apr 6

JAC1:10 pmJackson Hole

7h 28m

1 stop

BNA9:38 pmNashville Intl

$273

Delta

Apr 15

BNA7:00 amNashville Intl

10h 14m

1 stop

BOI4:14 pmBoise Air Term. Gowen Fld

Apr 28

BOI3:44 pmBoise Air Term. Gowen Fld

7h 15m

1 stop

BNA11:59 pmNashville Intl

$283

Fly from

Fly to

Route

Depart

Return

Price

CincinnatiSpokane

CVG - GEG

CVGGEG

Cincinnati Cinci./N. Kentucky

Sun 3/1

7:00 am-12:14 pm

1 stop8h 14m

Spokane

Thu 3/26

2:00 pm-12:37 am

1 stop7h 37m

$220

NashvilleSpokane

BNA - GEG

BNAGEG

Nashville Intl

Tue 3/10

3:54 pm-9:37 pm

1 stop7h 43m

Spokane

Sat 5/2

2:45 pm-11:59 pm

1 stop7h 14m

$257

NashvilleSpokane

BNA - GEG

BNAGEG

Nashville Intl

Tue 3/10

10:30 am-9:29 pm

2 stops12h 59m

Spokane

Sat 5/2

2:08 pm-10:52 pm

1 stop6h 44m

$272

NashvilleJackson

BNA - JAC

BNAJAC

Nashville Intl

Fri 3/27

1:50 pm-7:02 pm

1 stop6h 12m

Jackson Hole

Fri 4/3

1:10 pm-9:38 pm

1 stop7h 28m

$273

NashvilleSpokane

BNA - GEG

BNAGEG

Nashville Intl

Tue 3/10

1:26 pm-11:14 pm

2 stops11h 48m

Spokane

Sat 5/2

6:34 am-8:00 pm

2 stops11h 26m

$297

NashvilleJackson

BNA - JAC

BNAJAC

Nashville Intl

Thu 4/2

8:27 am-2:26 pm

1 stop6h 59m

Jackson Hole

Sun 4/5

3:06 pm-10:59 pm

1 stop6h 53m

$301

CincinnatiJackson

CVG - JAC

CVGJAC

Cincinnati Cinci./N. Kentucky

Mon 3/16

9:00 am-1:21 pm

1 stop6h 21m

Jackson Hole

Sat 3/28

9:05 am-6:50 pm

1 stop7h 45m

$301

NashvilleJackson

BNA - JAC

BNAJAC

Nashville Intl

Tue 3/17

10:11 am-8:54 pm

2 stops11h 43m

Jackson Hole

Wed 3/25

2:33 pm-9:48 pm

1 stop6h 15m

$306

KnoxvilleSpokane

TYS - GEG

TYSGEG

Knoxville McGhee Tyson

Sat 4/25

6:40 am-4:05 pm

2 stops12h 25m

Spokane

Mon 5/4

5:35 pm-12:00 pm

2 stops15h 25m

$407

KnoxvilleSpokane

TYS - GEG

TYSGEG

Knoxville McGhee Tyson

Sat 4/25

12:20 pm-4:05 pm

1 stop6h 45m

Spokane

Mon 5/4

5:35 pm-12:00 pm

2 stops15h 25m

$422

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 Kentucky to Idaho

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 Idaho?

In general, September is the cheapest month to fly from Kentucky to Idaho. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $311. If you don’t want to visit Idaho in September, then you should wait until August to fly from Kentucky, when ticket prices are also cheap, with an average price of $332.

Can stopping save me money on Kentucky to Idaho flights?

You could potentially save up to 35% on your flight if you consider stops on a Kentucky to Idaho flight.

Cheap Kentucky to Idaho flight deals and tips

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

Fastest flight time	5h 16m
Direct flights	None

The fastest flight from Kentucky to Idaho takes 5h 16m

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

Search flight deals

When did momondo last update prices for flights from Kentucky to Idaho?
Prices for flights from Kentucky to Idaho are refreshed on a daily basis.
How many operators does momondo search for flights from Kentucky to Idaho?
As of February 2026, there are 6 operators available to choose from for flights from Kentucky to Idaho.
How old do you have to be to fly from Kentucky to Idaho?
The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Kentucky to Idaho.
What documentation or ID do you need to fly to Idaho?
The required travel and health documents for your Idaho 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 Idaho. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

Best airlines flying from Kentucky to Idaho

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

Airline	Rating	Free Cancellation	Price
Delta	PriceFrom $196	Free Cancellation	Rating 7.9 8,191 reviews	Search Delta flights
American Airlines	PriceFrom $287	Free Cancellation	Rating 7.2 11,277 reviews	Search American Airlines flights
United Airlines	PriceFrom $341	Free Cancellation	Rating 7.4 9,286 reviews	Search United Airlines flights
Southwest	PriceFrom $346	Free Cancellation	Rating 8.0 4,283 reviews	Search Southwest flights

Why use momondo?

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

Finding the right flight to Idaho from Kentucky is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to Idaho quick and easy, saving you time and money.

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

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

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

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 Idaho from Kentucky.

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

Yes momondo offers price alerts on flights to Idaho 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.