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$118+ Cheap flights from Kentucky to Idaho

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 3/25. Fares are subject to change and may not be available on all flights or dates of travel.
SDF — BOI
Feb 25 — Mar 41
Tue 2/25
Tue 3/4
1 adult, Economy
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Cheap flight deals from Kentucky to Idaho

Keep the following information in mind while searching for Kentucky to Idaho flight deals. Data was last updated February 20, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$209
(Delta)

One-way from

$118
(CheapOair)

Popular in

September

Cheapest in

February

Average price

$381
Provider with most accurate pricing for Louisville Intl-Boise Air Term. Gowen Fld flight deals.
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Provider most trusted by Cheapflights users for Louisville Intl-Boise Air Term. Gowen Fld flights.
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From Kentucky to Idaho
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One-way flight from Kentucky to Idaho
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Highest demand for flights based on searches. 4% potential increase in price ($22 potential increase over avg. RT price).
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Cheapest flight prices on average. 4% potential price decrease ($24 potential savings vs. average RT price).
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Average for round-trip flights in February 2025
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Find flight deals from Kentucky to Idaho

Cheapest flights from Kentucky to Idaho
Explore the most affordable flight options available from Kentucky to Idaho. Find the lowest fares from popular airlines and budget airlines, with prices last updated on February 20, 2025.

This Delta deal was found by Cheapflights users on 2/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/46:05 amBNA - BOI
1 stop9h 00mDelta
Fri 4/114:40 pmBOI - BNA
1 stop6h 32mDelta
Deal found 2/20$209
This Mytrip deal was found by Cheapflights users on 2/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/137:22 pmBNA - BOI
1 stop18h 10mSpirit Airlines
Tue 3/181:31 pmBOI - BNA
1 stop22h 00mSpirit Airlines
Deal found 2/20$231
This American Airlines deal was found by Cheapflights users on 2/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/24:09 pmTYS - GEG
2 stops9h 55mAmerican Airlines
Wed 4/236:27 amGEG - TYS
2 stops9h 52mAmerican Airlines
Deal found 2/20$239
This Delta deal was found by Cheapflights users on 2/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/86:24 amCVG - BOI
1 stop9h 01mDelta
Mon 4/147:30 amBOI - CVG
1 stop9h 15mDelta
Deal found 2/20$243
This American Airlines deal was found by Cheapflights users on 2/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/85:17 pmCVG - BOI
1 stop6h 54mAmerican Airlines
Mon 4/141:23 pmBOI - CVG
1 stop6h 34mAmerican Airlines
Deal found 2/20$279
This Delta deal was found by Cheapflights users on 2/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/25:45 amTYS - GEG
1 stop9h 10mDelta
Wed 4/2312:45 pmGEG - TYS
1 stop8h 03mDelta
Deal found 2/19$284
This United Airlines deal was found by Cheapflights users on 2/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/38:42 amCVG - JAC
1 stop6h 34mUnited Airlines
Sat 5/107:00 amJAC - CVG
1 stop5h 30mUnited Airlines
Deal found 2/19$285
This Southwest deal was found by Cheapflights users on 2/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/92:25 pmCVG - BOI
2 stops10h 05mSouthwest
Tue 4/1510:50 amBOI - CVG
2 stops7h 45mSouthwest
Deal found 2/20$289
This Alaska Airlines deal was found by Cheapflights users on 2/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/304:26 pmBNA - GEG
1 stop8h 53mAlaska Airlines
Tue 5/68:40 pmGEG - BNA
1 stop7h 10mAlaska Airlines
Deal found 2/19$296
This Delta deal was found by Cheapflights users on 2/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/87:20 amBNA - GEG
1 stop7h 54mDelta
Tue 4/151:25 pmGEG - BNA
1 stop8h 34mDelta
Deal found 2/19$297
This Alaska Airlines deal was found by Cheapflights users on 2/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/267:00 amBNA - BOI
1 stop16h 41mAlaska Airlines
Sat 3/299:40 amBOI - BNA
1 stop13h 19mAlaska Airlines
Deal found 2/19$305
This American Airlines deal was found by Cheapflights users on 2/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/153:44 pmBNA - BOI
1 stop7h 15mAmerican Airlines
Tue 5/201:32 pmBOI - BNA
1 stop8h 09mAmerican Airlines
Deal found 2/19$313

Find flights from Kentucky to Idaho within your budget

Customize your flight search to find flights from Kentucky to Idaho 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, Cheapflights users made 2,558,603 searches. Data last updated February 20, 2025.

Fly from

Kentucky

Fly to

Idaho

Route

Depart

Return

Price

NashvilleBoise

BNA - BOI

BNABOI

Nashville Intl

Fri 4/4

6:05 am-2:05 pm

1 stop9h 00m

Boise Air Term. Gowen Fld

Fri 4/11

4:40 pm-12:12 am

1 stop6h 32m

$209

NashvilleBoise

BNA - BOI

BNABOI

Nashville Intl

Thu 3/13

7:22 pm-12:32 pm

1 stop18h 10m

Boise Air Term. Gowen Fld

Tue 3/18

1:31 pm-12:31 pm

1 stop22h 00m

$231

KnoxvilleSpokane

TYS - GEG

TYSGEG

Knoxville McGhee Tyson

Wed 4/2

4:09 pm-11:04 pm

2 stops9h 55m

Spokane

Wed 4/23

6:27 am-7:19 pm

2 stops9h 52m

$239

KnoxvilleSpokane

TYS - GEG

TYSGEG

Knoxville McGhee Tyson

Wed 4/2

5:45 am-11:55 am

1 stop9h 10m

Spokane

Wed 4/23

12:45 pm-11:48 pm

1 stop8h 03m

$284

CincinnatiJackson

CVG - JAC

CVGJAC

Cincinnati Cinci./N. Kentucky

Sat 5/3

8:42 am-1:16 pm

1 stop6h 34m

Jackson Hole

Sat 5/10

7:00 am-2:30 pm

1 stop5h 30m

$285

NashvilleSpokane

BNA - GEG

BNAGEG

Nashville Intl

Wed 4/30

4:26 pm-11:19 pm

1 stop8h 53m

Spokane

Tue 5/6

8:40 pm-5:50 am

1 stop7h 10m

$296

NashvilleSpokane

BNA - GEG

BNAGEG

Nashville Intl

Tue 4/8

7:20 am-1:14 pm

1 stop7h 54m

Spokane

Tue 4/15

1:25 pm-11:59 pm

1 stop8h 34m

$297

NashvilleBoise

BNA - BOI

BNABOI

Nashville Intl

Wed 3/26

7:00 am-10:41 pm

1 stop16h 41m

Boise Air Term. Gowen Fld

Sat 3/29

9:40 am-11:59 pm

1 stop13h 19m

$305

NashvilleBoise

BNA - BOI

BNABOI

Nashville Intl

Thu 5/15

3:44 pm-9:59 pm

1 stop7h 15m

Boise Air Term. Gowen Fld

Tue 5/20

1:32 pm-10:41 pm

1 stop8h 09m

$313

NashvilleBoise

BNA - BOI

BNABOI

Nashville Intl

Thu 5/15

6:00 am-5:15 pm

1 stop12h 15m

Boise Air Term. Gowen Fld

Tue 5/20

8:40 am-8:55 pm

1 stop11h 15m

$324

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/19

Showing 1-10 of 52 results
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Best time to book a flight from Kentucky to Idaho

Have a flexible travel schedule? Discover the best time to fly to Idaho from Kentucky with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Travel insights for flights from Kentucky to Idaho

Get recent, data-driven insights about flights from Kentucky to Idaho including ideal travel times, pricing trends, and more.

What is the cheapest month to book a flight from Kentucky to Idaho?

Currently, October is the cheapest month in which you can book a flight from Kentucky to Idaho (average of $314). Flying from Kentucky to Idaho in June is currently the most expensive (average of $436). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from KY to ID?

Find hourly flight availability from Kentucky to Idaho. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated February 20, 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Kentucky to Idaho as you normally would.

Rainfall in Idaho by month

Plan your trip to Idaho by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Idaho ranges from 0.2 - 1.6 inches per month. December is typically the wettest month, when rainfall can reach 1.6 in. August is typically the driest time to visit Idaho when rainfall is around 0.2 in.

Temperature in Idaho by month

Plan your trip to Idaho by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Idaho, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 75.2 F. Travelers looking to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 30.2 F).

Reviews of airlines servicing Idaho

Get insights into the airlines that provide service to Idaho. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Idaho. Reviews last updated February 20, 2025.
Get a feel of what it's like to fly with Southwest, Alaska Airlines and Delta from Kentucky to Idaho by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.1
Very good
4,411 reviews

Boarding

8.2

Entertainment

7.6

Comfort

8.1

Crew

8.7

Food

7.1

Overall

8.1

Reviews

1 / 20

2.0
Mediocre

Anonymous,Feb 2025

MCO - STL

Cancelled at last minute, SWA unable to assist in formulating alternate plans. Wound up renting a car and driving 13 hours to beat bad weather forecast at home. Not SWA’s fault that there was significant bad weather across the country.

Southwest
8.1
Very good
4,411 reviews
Southwest
8.1
Very good
4,411 reviews

Boarding

8.2

Entertainment

7.6

Comfort

8.1

Crew

8.7

Food

7.1

Overall

8.1

Reviews

1 / 20

2.0
Mediocre

Anonymous,Feb 2025

MCO - STL

Cancelled at last minute, SWA unable to assist in formulating alternate plans. Wound up renting a car and driving 13 hours to beat bad weather forecast at home. Not SWA’s fault that there was significant bad weather across the country.

Alaska Airlines
8.0
Very good
9,697 reviews
Southwest
8.1
Very good
4,411 reviews

Boarding

8.2

Entertainment

7.6

Comfort

8.1

Crew

8.7

Food

7.1

Overall

8.1

Reviews

1 / 20

2.0
Mediocre

Anonymous,Feb 2025

MCO - STL

Cancelled at last minute, SWA unable to assist in formulating alternate plans. Wound up renting a car and driving 13 hours to beat bad weather forecast at home. Not SWA’s fault that there was significant bad weather across the country.

Delta
8.0
Very good
8,219 reviews
Southwest
8.1
Very good
4,411 reviews

Boarding

8.2

Entertainment

7.6

Comfort

8.1

Crew

8.7

Food

7.1

Overall

8.1

Reviews

1 / 20

2.0
Mediocre

Anonymous,Feb 2025

MCO - STL

Cancelled at last minute, SWA unable to assist in formulating alternate plans. Wound up renting a car and driving 13 hours to beat bad weather forecast at home. Not SWA’s fault that there was significant bad weather across the country.

Hawaiian Airlines
7.9
Good
2,317 reviews
Southwest
8.1
Very good
4,411 reviews

Boarding

8.2

Entertainment

7.6

Comfort

8.1

Crew

8.7

Food

7.1

Overall

8.1

Reviews

1 / 20

2.0
Mediocre

Anonymous,Feb 2025

MCO - STL

Cancelled at last minute, SWA unable to assist in formulating alternate plans. Wound up renting a car and driving 13 hours to beat bad weather forecast at home. Not SWA’s fault that there was significant bad weather across the country.

United Airlines
7.4
Good
8,765 reviews
Southwest
8.1
Very good
4,411 reviews

Boarding

8.2

Entertainment

7.6

Comfort

8.1

Crew

8.7

Food

7.1

Overall

8.1

Reviews

1 / 20

2.0
Mediocre

Anonymous,Feb 2025

MCO - STL

Cancelled at last minute, SWA unable to assist in formulating alternate plans. Wound up renting a car and driving 13 hours to beat bad weather forecast at home. Not SWA’s fault that there was significant bad weather across the country.

Related info for your journey

Find useful and relevant information for your journey from Kentucky to Idaho. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What are the cheapest airlines to fly from Kentucky to Idaho one-way?

    To fly one-way, consider booking your trip with Spirit Airlines, which is currently one of the cheapest options available, starting at $118. Delta flights start at $147 while deals on American Airlines start at $155 one-way.

  • Can I find deals for flights from Kentucky to Idaho that include hotel bookings?

    Yes. In addition to deals on Kentucky to Idaho flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Kentucky to Idaho?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Kentucky to Idaho.

  • Can I find deals for business class flights from Kentucky to Idaho?

    Yes. Cheapflights offers flight deals from Kentucky to Idaho by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Kentucky to Idaho?

    Currently, October is the cheapest month in which you can book a flight from Kentucky to Idaho (average of $314). Flying from Kentucky to Idaho in June is currently the most expensive (average of $436). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

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Alternative routes for Kentucky to Idaho

See prices for flight routes from nearby airports that may be better suited for you.
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Top 4 airlines flying from Kentucky to Idaho

Discover the top 4 airlines that operate flights from Kentucky to Idaho. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated February 20, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$260Average$476FlexibilityNo cancel feeOn-time71%
DeltaCheapest$265Average$442FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$324Average$685FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$381Average$426FlexibilityNo cancel feeOn-time63%
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