What airlines fly to Idaho?

United Airlines, American Airlines and Delta are the top three most popular airlines that fly to Idaho from Kentucky according to our data. United Airlines is the first choice among our users, with 38% 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.

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

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

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 6h 13m on average. Another popular route from Kentucky to Idaho is flying from Lexington to Boise, which will take roughly 6h 23m. 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 August 2026, there are 5 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.

$104 Cheap Flights from Kentucky to Idaho in 2026

Discover deals from 900+ travel sites with momondo.

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.

12:55 pm - 11:29 amBNA Nashville Intl-BOI Boise Air Term. Gowen Fld

23h 34m1 stop Denver Intl

2:50 pm - 1:04 pmBOI Boise Air Term. Gowen Fld-BNA Nashville Intl

21h 14m1 stop Las Vegas Harry Reid Intl

$170Frontier

Sat, Sep 5 - Thu, Sep 10

6:05 am - 10:55 amBNA Nashville Intl-BOI Boise Air Term. Gowen Fld

5h 50m1 stop Denver Intl

3:25 pm - 10:50 pmBOI Boise Air Term. Gowen Fld-BNA Nashville Intl

6h 25m1 stop Phoenix Sky Harbor Intl

$207Southwest

Sat, Sep 12 - Sat, Sep 19

7:00 am - 11:59 amBNA Nashville Intl-GEG Spokane

6h 59m1 stop Dallas/Fort Worth

12:49 pm - 9:44 pmGEG Spokane-BNA Nashville Intl

6h 55m1 stop Dallas/Fort Worth

$207American Airlines

Tue, Oct 13 - Tue, Oct 20

7:00 am - 12:20 pmBNA Nashville Intl-GEG Spokane

7h 20m1 stop Seattle/Tacoma Intl

1:00 pm - 11:58 pmGEG Spokane-BNA Nashville Intl

8h 58m1 stop Seattle/Tacoma Intl

$207Delta

Sat, Sep 19 - Wed, Sep 23

7:28 pm - 11:30 pmBNA Nashville Intl-GEG Spokane

6h 02m1 stop Salt Lake City

1:00 pm - 11:58 pmGEG Spokane-BNA Nashville Intl

8h 58m1 stop Seattle/Tacoma Intl

$207Delta

Mon, Sep 14 - Wed, Sep 23

5:00 am - 11:24 amBNA Nashville Intl-BOI Boise Air Term. Gowen Fld

7h 24m1 stop Dallas/Fort Worth

2:41 pm - 9:44 pmBOI Boise Air Term. Gowen Fld-BNA Nashville Intl

6h 03m1 stop Dallas/Fort Worth

$208American Airlines

Thu, Oct 15 - Tue, Oct 20

2:53 pm - 2:57 pmBNA Nashville Intl-BOI Boise Air Term. Gowen Fld

25h 04m1 stop Las Vegas Harry Reid Intl

3:52 pm - 1:58 pmBOI Boise Air Term. Gowen Fld-BNA Nashville Intl

21h 06m1 stop Las Vegas Harry Reid Intl

$210Frontier

Thu, Oct 29 - Sun, Nov 1

5:15 am - 11:20 amBNA Nashville Intl-BOI Boise Air Term. Gowen Fld

7h 05m1 stop Phoenix Sky Harbor Intl

11:55 am - 10:00 pmBOI Boise Air Term. Gowen Fld-BNA Nashville Intl

9h 05m1 stop Phoenix Sky Harbor Intl

$213Southwest

Thu, Oct 15 - Tue, Oct 20

2:26 pm - 9:09 pmBNA Nashville Intl-GEG Spokane

8h 43m1 stop Denver Intl

1:45 pm - 9:34 pmGEG Spokane-BNA Nashville Intl

5h 49m1 stop Denver Intl

$254United Airlines

Mon, Feb 1 - Fri, Feb 5

11:15 am - 9:09 pmBNA Nashville Intl-GEG Spokane

11h 54m2 stops Chicago O'Hare Intl Denver Intl

1:45 pm - 9:34 pmGEG Spokane-BNA Nashville Intl

5h 49m1 stop Denver Intl

$260United Airlines

Mon, Feb 1 - Fri, Feb 5

Cheap last minute flights

Enter your travel dates to find the best prices.

5:20 pm - 11:59 pmBNA Nashville Intl-GEG Spokane

8h 39m1 stop Seattle/Tacoma Intl

7:05 am - 3:53 pmGEG Spokane-BNA Nashville Intl

6h 48m1 stop Seattle/Tacoma Intl

$313Delta

Wed, Aug 19 - Sat, Aug 22

6:00 am - 11:54 amBNA Nashville Intl-GEG Spokane

7h 54m1 stop Dallas/Fort Worth

5:20 am - 4:02 pmGEG Spokane-BNA Nashville Intl

8h 42m2 stops Phoenix Sky Harbor Intl Dallas/Fort Worth

$344American Airlines

Wed, Aug 19 - Sat, Aug 22

4:15 pm - 9:18 pmBNA Nashville Intl-IDA Idaho Falls Fanning Field

6h 03m1 stop Denver Intl

2:25 pm - 9:15 pmIDA Idaho Falls Fanning Field-BNA Nashville Intl

5h 50m1 stop Denver Intl

$409United Airlines

Sat, Aug 15 - Wed, Aug 26

6:00 am - 11:30 amBNA Nashville Intl-IDA Idaho Falls Fanning Field

6h 30m1 stop Dallas/Fort Worth

2:20 pm - 9:40 pmIDA Idaho Falls Fanning Field-BNA Nashville Intl

6h 20m1 stop Dallas/Fort Worth

$409American Airlines

Sat, Aug 15 - Wed, Aug 26

12:33 pm - 9:18 pmBNA Nashville Intl-IDA Idaho Falls Fanning Field

9h 45m2 stops Chicago O'Hare Intl Denver Intl

2:25 pm - 9:15 pmIDA Idaho Falls Fanning Field-BNA Nashville Intl

5h 50m1 stop Denver Intl

$414United Airlines

Sat, Aug 15 - Wed, Aug 26

4:29 pm - 8:10 pmCVG Cincinnati Cinci./N. Kentucky-JAC Jackson Hole

5h 41m1 stop Minneapolis St Paul

1:10 pm - 10:41 pmJAC Jackson Hole-CVG Cincinnati Cinci./N. Kentucky

7h 31m1 stop Salt Lake City

$527Delta

Sat, Aug 15 - Fri, Aug 21

4:43 pm - 10:59 pmBNA Nashville Intl-GEG Spokane

8h 16m1 stop Portland

8:31 am - 11:27 pmGEG Spokane-BNA Nashville Intl

12h 56m2 stops Seattle/Tacoma Intl Dallas/Fort Worth

$588Alaska Airlines

Sun, Aug 16 - Thu, Aug 20

5:55 pm - 11:10 pmBNA Nashville Intl-BOI Boise Air Term. Gowen Fld

6h 15m1 stop Denver Intl

6:00 am - 3:00 pmBOI Boise Air Term. Gowen Fld-BNA Nashville Intl

8h 00m1 stop Las Vegas Harry Reid Intl

$632Southwest

Wed, Aug 19 - Wed, Aug 26

2:50 pm - 10:25 pmBNA Nashville Intl-BOI Boise Air Term. Gowen Fld

8h 35m1 stop Las Vegas Harry Reid Intl

8:20 am - 5:50 pmBOI Boise Air Term. Gowen Fld-BNA Nashville Intl

8h 30m2 stops Denver Intl Austin Bergstrom

$637Southwest

Wed, Aug 19 - Wed, Aug 26

4:43 pm - 10:59 pmBNA Nashville Intl-GEG Spokane

8h 16m1 stop Portland

3:05 pm - 5:26 pmGEG Spokane-BNA Nashville Intl

24h 21m1 stop Portland

$655Alaska Airlines

Mon, Aug 17 - Wed, Aug 19

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Frontier flights from Kentucky to Idaho

Our best Frontier deals on Kentucky to Idaho flight tickets

Frontier

Sep 5

BNA12:55 pmNashville Intl

23h 34m

1 stop

BOI11:29 amBoise Air Term. Gowen Fld

Sep 10

BOI2:50 pmBoise Air Term. Gowen Fld

21h 14m

1 stop

BNA1:04 pmNashville Intl

$170

Frontier

Oct 29

BNA2:53 pmNashville Intl

25h 04m

1 stop

BOI2:57 pmBoise Air Term. Gowen Fld

Nov 1

BOI3:52 pmBoise Air Term. Gowen Fld

21h 06m

1 stop

BNA1:58 pmNashville Intl

$210

Frontier

Aug 31

BNA12:55 pmNashville Intl

24h 34m

1 stop

BOI12:29 pmBoise Air Term. Gowen Fld

Sep 8

BOI1:24 pmBoise Air Term. Gowen Fld

23h 54m

1 stop

BNA2:18 pmNashville Intl

$232

American Airlines flights from Kentucky to Idaho

Our best American Airlines deals on Kentucky to Idaho flight tickets

American Airlines

Oct 15

BNA5:00 amNashville Intl

7h 24m

1 stop

BOI11:24 amBoise Air Term. Gowen Fld

Oct 20

BOI2:41 pmBoise Air Term. Gowen Fld

6h 03m

1 stop

BNA9:44 pmNashville Intl

$208

American Airlines

Sep 12

BNA9:00 amNashville Intl

9h 03m

2 stops

BOI5:03 pmBoise Air Term. Gowen Fld

Sep 19

BOI1:50 pmBoise Air Term. Gowen Fld

6h 39m

1 stop

BNA9:29 pmNashville Intl

$212

American Airlines

Sep 5

BNA12:40 pmNashville Intl

11h 00m

2 stops

BOI10:40 pmBoise Air Term. Gowen Fld

Sep 10

BOI3:21 pmBoise Air Term. Gowen Fld

8h 13m

1 stop

BNA12:34 amNashville Intl

$217

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

NashvilleBoise

BNA Nashville Intl - BOI Boise Air Term. Gowen Fld

BNABOI

Nashville Intl

Sat 9/5

12:55 pm-11:29 am

1 stop23h 34m

Boise Air Term. Gowen Fld

Thu 9/10

2:50 pm-1:04 pm

1 stop21h 14m

$170

Quickest round-trip

NashvilleBoise

BNA Nashville Intl - BOI Boise Air Term. Gowen Fld

BNABOI

Nashville Intl

Sat 9/12

6:05 am-10:55 am

1 stop5h 50m

Boise Air Term. Gowen Fld

Sat 9/19

3:25 pm-10:50 pm

1 stop6h 25m

$207

NashvilleSpokane

BNA Nashville Intl - GEG Spokane

BNAGEG

Nashville Intl

Tue 10/13

7:00 am-11:59 am

1 stop6h 59m

Spokane

Tue 10/20

12:49 pm-9:44 pm

1 stop6h 55m

$207

NashvilleSpokane

BNA Nashville Intl - GEG Spokane

BNAGEG

Nashville Intl

Sat 9/19

7:00 am-12:20 pm

1 stop7h 20m

Spokane

Wed 9/23

1:00 pm-11:58 pm

1 stop8h 58m

$207

NashvilleSpokane

BNA Nashville Intl - GEG Spokane

BNAGEG

Nashville Intl

Mon 9/14

7:28 pm-11:30 pm

1 stop6h 02m

Spokane

Wed 9/23

1:00 pm-11:58 pm

1 stop8h 58m

$207

NashvilleBoise

BNA Nashville Intl - BOI Boise Air Term. Gowen Fld

BNABOI

Nashville Intl

Thu 10/15

5:00 am-11:24 am

1 stop7h 24m

Boise Air Term. Gowen Fld

Tue 10/20

2:41 pm-9:44 pm

1 stop6h 03m

$208

NashvilleBoise

BNA Nashville Intl - BOI Boise Air Term. Gowen Fld

BNABOI

Nashville Intl

Thu 10/29

2:53 pm-2:57 pm

1 stop25h 04m

Boise Air Term. Gowen Fld

Sun 11/1

3:52 pm-1:58 pm

1 stop21h 06m

$210

NashvilleBoise

BNA Nashville Intl - BOI Boise Air Term. Gowen Fld

BNABOI

Nashville Intl

Thu 10/15

5:15 am-11:20 am

1 stop7h 05m

Boise Air Term. Gowen Fld

Tue 10/20

11:55 am-10:00 pm

1 stop9h 05m

$213

NashvilleSpokane

BNA Nashville Intl - GEG Spokane

BNAGEG

Nashville Intl

Mon 2/1

2:26 pm-9:09 pm

1 stop8h 43m

Spokane

Fri 2/5

1:45 pm-9:34 pm

1 stop5h 49m

$254

NashvilleSpokane

BNA Nashville Intl - GEG Spokane

BNAGEG

Nashville Intl

Mon 2/1

11:15 am-9:09 pm

2 stops11h 54m

Spokane

Fri 2/5

1:45 pm-9:34 pm

1 stop5h 49m

$260

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 $306. If you don’t want to visit Idaho in September, then you should wait until April to fly from Kentucky, when ticket prices are also cheap, with an average price of $381.

Can stopping save me money on Kentucky to Idaho flights?

You could potentially save up to 60% 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 19m
Direct flights	None

The fastest flight from Kentucky to Idaho takes 5h 19m

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

Search flight deals

Frequently asked questions about flying from Kentucky to Idaho

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 August 2026, there are 5 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
American Airlines	PriceFrom $306	Free Cancellation	Rating 7.1 11,929 reviews	Search American Airlines flights
United Airlines	PriceFrom $327	Free Cancellation	Rating 7.4 10,108 reviews	Search United Airlines flights
Delta	PriceFrom $331	Free Cancellation	Rating 7.8 8,502 reviews	Search Delta flights
Southwest	PriceFrom $401	Free Cancellation	Rating 8.0 4,218 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.