What airlines fly to Idaho?

United Airlines, American Airlines and Delta are the top three most popular airlines that fly to Idaho from Louisville according to our data. United Airlines is the first choice among our users, with 42% of people opting to fly with this airline when traveling to Idaho. Keep in mind that there are 5 different airlines that fly to Idaho on a routine basis, so you have a few additional options to choose from.

How many flights depart from Louisville to Idaho on average per week?

As of October 2026, there are 3 flights per week flying from Louisville to Idaho. The most common day of the week flights depart is Mon, with 33% of flights taking off on this day.

What is the cheapest airline that flies from Louisville Intl to Idaho?

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

When did momondo last update prices for flights from Louisville Intl Airport to Idaho?

Prices for flights from Louisville Intl Airport to Idaho refresh daily.

How many operators does momondo search for flights from Louisville Intl Airport to Idaho?

The number of operators available for flights from Louisville Intl Airport to Idaho is 4 as of October 2026.

How old do you have to be to fly from Louisville Intl Airport to Idaho?

Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Louisville Intl Airport to Idaho.

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

The travel and health documents you'll need for your trip to Idaho may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Idaho. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

$187 Cheap Flights from Louisville to Idaho in 2026/27

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Louisville to Idaho

Round-trip

One-way

Last minute

Cheap round-trip flights

Enter your travel dates to find the best prices.

6:01 am - 11:25 amSDF Louisville Intl-BOI Boise Air Term. Gowen Fld

7h 24m1 stop Dallas/Fort Worth

2:41 pm - 11:34 pmBOI Boise Air Term. Gowen Fld-SDF Louisville Intl

6h 53m1 stop Dallas/Fort Worth

$363American Airlines

Fri, Nov 6 - Fri, Nov 13

6:36 am - 12:42 pmSDF Louisville Intl-BOI Boise Air Term. Gowen Fld

8h 06m1 stop Minneapolis St Paul

5:40 am - 3:17 pmBOI Boise Air Term. Gowen Fld-SDF Louisville Intl

7h 37m1 stop Minneapolis St Paul

$363Delta

Sat, Feb 20 - Mon, Feb 22

5:05 am - 9:50 amSDF Louisville Intl-BOI Boise Air Term. Gowen Fld

6h 45m1 stop Phoenix Sky Harbor Intl

5:00 am - 5:30 pmBOI Boise Air Term. Gowen Fld-SDF Louisville Intl

10h 30m2 stops Phoenix Sky Harbor Intl Denver Intl

$368Southwest

Fri, Nov 6 - Fri, Nov 13

6:36 am - 2:22 pmSDF Louisville Intl-BOI Boise Air Term. Gowen Fld

9h 46m2 stops Minneapolis St Paul Seattle/Tacoma Intl

5:40 am - 3:17 pmBOI Boise Air Term. Gowen Fld-SDF Louisville Intl

7h 37m1 stop Minneapolis St Paul

$368Delta

Sat, Feb 20 - Mon, Feb 22

4:05 pm - 11:00 pmSDF Louisville Intl-BOI Boise Air Term. Gowen Fld

8h 55m2 stops Dallas Love Field Denver Intl

5:00 am - 5:30 pmBOI Boise Air Term. Gowen Fld-SDF Louisville Intl

10h 30m2 stops Phoenix Sky Harbor Intl Denver Intl

$401Southwest

Fri, Nov 6 - Fri, Nov 13

6:50 am - 12:42 pmSDF Louisville Intl-BOI Boise Air Term. Gowen Fld

7h 52m1 stop Minneapolis St Paul

5:36 am - 1:20 pmBOI Boise Air Term. Gowen Fld-SDF Louisville Intl

5h 44m1 stop Minneapolis St Paul

$427Delta

Tue, Dec 15 - Tue, Dec 22

4:18 pm - 9:42 pmSDF Louisville Intl-IDA Idaho Falls Fanning Field

7h 24m1 stop Dallas/Fort Worth

1:39 pm - 11:27 pmIDA Idaho Falls Fanning Field-SDF Louisville Intl

7h 48m1 stop Dallas/Fort Worth

$429American Airlines

Tue, Oct 27 - Sat, Oct 31

10:27 am - 9:09 pmSDF Louisville Intl-IDA Idaho Falls Fanning Field

12h 42m2 stops Chicago O'Hare Intl Denver Intl

2:35 pm - 10:24 pmIDA Idaho Falls Fanning Field-SDF Louisville Intl

5h 49m1 stop Denver Intl

$434United Airlines

Tue, Oct 27 - Sat, Oct 31

9:00 am - 3:31 pmSDF Louisville Intl-IDA Idaho Falls Fanning Field

8h 31m1 stop Denver Intl

2:30 pm - 10:30 pmIDA Idaho Falls Fanning Field-SDF Louisville Intl

6h 00m1 stop Denver Intl

$469United Airlines

Sat, Jan 30 - Tue, Feb 2

10:16 am - 2:33 pmSDF Louisville Intl-BOI Boise Air Term. Gowen Fld

6h 17m1 stop Chicago O'Hare Intl

2:41 pm - 11:27 pmBOI Boise Air Term. Gowen Fld-SDF Louisville Intl

6h 46m1 stop Dallas/Fort Worth

$607American Airlines

Mon, Oct 26 - Fri, Oct 30

Cheap last minute flights

Enter your travel dates to find the best prices.

8:00 am - 1:38 pmSDF Louisville Intl-BOI Boise Air Term. Gowen Fld

7h 38m1 stop Denver Intl

5:00 am - 2:22 pmBOI Boise Air Term. Gowen Fld-SDF Louisville Intl

7h 22m1 stop Denver Intl

$601United Airlines

Tue, Oct 20 - Sat, Oct 31

6:00 am - 1:34 pmSDF Louisville Intl-BOI Boise Air Term. Gowen Fld

9h 34m1 stop Atlanta Hartsfield-Jackson

6:00 am - 7:10 pmBOI Boise Air Term. Gowen Fld-SDF Louisville Intl

11h 10m2 stops Salt Lake City Atlanta Hartsfield-Jackson

$606Delta

Tue, Oct 20 - Sat, Oct 31

7:00 am - 5:14 pmSDF Louisville Intl-BOI Boise Air Term. Gowen Fld

12h 14m2 stops Minneapolis St Paul Seattle/Tacoma Intl

11:32 am - 10:47 pmBOI Boise Air Term. Gowen Fld-SDF Louisville Intl

9h 15m2 stops Salt Lake City Atlanta Hartsfield-Jackson

$611Delta

Tue, Oct 20 - Sat, Oct 31

3:36 pm - 10:33 pmSDF Louisville Intl-BOI Boise Air Term. Gowen Fld

8h 57m1 stop Denver Intl

5:00 am - 2:22 pmBOI Boise Air Term. Gowen Fld-SDF Louisville Intl

7h 22m1 stop Denver Intl

$684United Airlines

Mon, Oct 19 - Sun, Nov 1

6:35 am - 1:20 pmSDF Louisville Intl-BOI Boise Air Term. Gowen Fld

8h 45m2 stops Phoenix Sky Harbor Intl Oakland

12:30 pm - 11:40 pmBOI Boise Air Term. Gowen Fld-SDF Louisville Intl

9h 10m1 stop Phoenix Sky Harbor Intl

$685Southwest

Mon, Oct 19 - Sun, Nov 1

6:35 am - 1:20 pmSDF Louisville Intl-BOI Boise Air Term. Gowen Fld

8h 45m2 stops Phoenix Sky Harbor Intl Oakland

5:35 am - 5:30 pmBOI Boise Air Term. Gowen Fld-SDF Louisville Intl

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

$690Southwest

Mon, Oct 19 - Sun, Nov 1

4:18 pm - 10:29 pmSDF Louisville Intl-BOI Boise Air Term. Gowen Fld

8h 11m1 stop Dallas/Fort Worth

1:24 pm - 9:37 pmBOI Boise Air Term. Gowen Fld-SDF Louisville Intl

6h 13m1 stop Chicago O'Hare Intl

$744American Airlines

Mon, Oct 19 - Sun, Nov 1

7:00 am - 12:35 pmSDF Louisville Intl-BOI Boise Air Term. Gowen Fld

7h 35m1 stop Minneapolis St Paul

11:10 pm - 10:21 amBOI Boise Air Term. Gowen Fld-SDF Louisville Intl

9h 11m1 stop Atlanta Hartsfield-Jackson

$761Delta

Sun, Oct 18 - Fri, Oct 23

5:15 am - 3:31 pmSDF Louisville Intl-BOI Boise Air Term. Gowen Fld

12h 16m2 stops Chicago O'Hare Intl San Francisco

5:00 am - 2:22 pmBOI Boise Air Term. Gowen Fld-SDF Louisville Intl

7h 22m1 stop Denver Intl

$808United Airlines

Mon, Oct 19 - Sun, Nov 1

5:15 am - 2:03 pmSDF Louisville Intl-BOI Boise Air Term. Gowen Fld

10h 48m2 stops Chicago O'Hare Intl San Francisco

7:10 pm - 9:38 amBOI Boise Air Term. Gowen Fld-SDF Louisville Intl

12h 28m2 stops San Francisco Chicago O'Hare Intl

$814United Airlines

Mon, Oct 19 - Sun, Nov 1

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American Airlines flights from Louisville to Idaho

Our best American Airlines deals on Louisville to Idaho flight tickets

American Airlines

Nov 6

SDF6:01 amLouisville Intl

7h 24m

1 stop

BOI11:25 amBoise Air Term. Gowen Fld

Nov 13

BOI2:41 pmBoise Air Term. Gowen Fld

6h 53m

1 stop

SDF11:34 pmLouisville Intl

$363

American Airlines

Oct 27

SDF4:18 pmLouisville Intl

7h 24m

1 stop

IDA9:42 pmIdaho Falls Fanning Field

Oct 31

IDA1:39 pmIdaho Falls Fanning Field

7h 48m

1 stop

SDF11:27 pmLouisville Intl

$429

American Airlines

Oct 26

SDF10:16 amLouisville Intl

6h 17m

1 stop

BOI2:33 pmBoise Air Term. Gowen Fld

Oct 30

BOI2:41 pmBoise Air Term. Gowen Fld

6h 46m

1 stop

SDF11:27 pmLouisville Intl

$607

Southwest flights from Louisville to Idaho

Our best Southwest deals on Louisville to Idaho flight tickets

Southwest

Nov 6

SDF5:05 amLouisville Intl

6h 45m

1 stop

BOI9:50 amBoise Air Term. Gowen Fld

Nov 13

BOI5:00 amBoise Air Term. Gowen Fld

10h 30m

2 stops

SDF5:30 pmLouisville Intl

$368

Southwest

Nov 6

SDF4:05 pmLouisville Intl

8h 55m

2 stops

BOI11:00 pmBoise Air Term. Gowen Fld

Nov 13

BOI5:00 amBoise Air Term. Gowen Fld

10h 30m

2 stops

SDF5:30 pmLouisville Intl

$401

Southwest

Feb 20

SDF2:30 pmLouisville Intl

11h 00m

2 stops

BOI11:30 pmBoise Air Term. Gowen Fld

Feb 22

BOI7:40 amBoise Air Term. Gowen Fld

12h 20m

2 stops

SDF10:00 pmLouisville Intl

$429

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

LouisvilleBoise

SDF Louisville Intl - BOI Boise Air Term. Gowen Fld

SDFBOI

Louisville Intl

Fri 11/6

6:01 am-11:25 am

1 stop7h 24m

Boise Air Term. Gowen Fld

Fri 11/13

2:41 pm-11:34 pm

1 stop6h 53m

$363

LouisvilleBoise

SDF Louisville Intl - BOI Boise Air Term. Gowen Fld

SDFBOI

Louisville Intl

Sat 2/20

6:36 am-12:42 pm

1 stop8h 06m

Boise Air Term. Gowen Fld

Mon 2/22

5:40 am-3:17 pm

1 stop7h 37m

$363

LouisvilleBoise

SDF Louisville Intl - BOI Boise Air Term. Gowen Fld

SDFBOI

Louisville Intl

Fri 11/6

5:05 am-9:50 am

1 stop6h 45m

Boise Air Term. Gowen Fld

Fri 11/13

5:00 am-5:30 pm

2 stops10h 30m

$368

LouisvilleBoise

SDF Louisville Intl - BOI Boise Air Term. Gowen Fld

SDFBOI

Louisville Intl

Sat 2/20

6:36 am-2:22 pm

2 stops9h 46m

Boise Air Term. Gowen Fld

Mon 2/22

5:40 am-3:17 pm

1 stop7h 37m

$368

LouisvilleBoise

SDF Louisville Intl - BOI Boise Air Term. Gowen Fld

SDFBOI

Louisville Intl

Fri 11/6

4:05 pm-11:00 pm

2 stops8h 55m

Boise Air Term. Gowen Fld

Fri 11/13

5:00 am-5:30 pm

2 stops10h 30m

$401

LouisvilleBoise

SDF Louisville Intl - BOI Boise Air Term. Gowen Fld

SDFBOI

Louisville Intl

Tue 12/15

6:50 am-12:42 pm

1 stop7h 52m

Boise Air Term. Gowen Fld

Tue 12/22

5:36 am-1:20 pm

1 stop5h 44m

$427

LouisvilleIdaho Falls

SDF Louisville Intl - IDA Idaho Falls Fanning Field

SDFIDA

Louisville Intl

Tue 10/27

4:18 pm-9:42 pm

1 stop7h 24m

Idaho Falls Fanning Field

Sat 10/31

1:39 pm-11:27 pm

1 stop7h 48m

$429

LouisvilleIdaho Falls

SDF Louisville Intl - IDA Idaho Falls Fanning Field

SDFIDA

Louisville Intl

Tue 10/27

10:27 am-9:09 pm

2 stops12h 42m

Idaho Falls Fanning Field

Sat 10/31

2:35 pm-10:24 pm

1 stop5h 49m

$434

LouisvilleIdaho Falls

SDF Louisville Intl - IDA Idaho Falls Fanning Field

SDFIDA

Louisville Intl

Sat 1/30

9:00 am-3:31 pm

1 stop8h 31m

Idaho Falls Fanning Field

Tue 2/2

2:30 pm-10:30 pm

1 stop6h 00m

$469

Quickest round-trip

LouisvilleBoise

SDF Louisville Intl - BOI Boise Air Term. Gowen Fld

SDFBOI

Louisville Intl

Mon 10/26

10:16 am-2:33 pm

1 stop6h 17m

Boise Air Term. Gowen Fld

Fri 10/30

2:41 pm-11:27 pm

1 stop6h 46m

$607

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 Louisville 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, April is the cheapest month to fly from Louisville to Idaho. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $368. If you don’t want to visit Idaho in April, then you should wait until January to fly from Louisville, when ticket prices are also cheap, with an average price of $397.

Cheap Louisville to Idaho flight deals and tips

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

Best Price Found	$187
Fastest flight time	6h 55m
Direct flights	None

The best one-way flight to Idaho from Louisville in the past 72 hours is $187. The best round-trip flight deal from Louisville to Idaho found on momondo in the last 72 hours is $363.

The fastest flight from Louisville to Idaho takes 6h 55m

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

Search flight deals

Frequently asked questions about flying from Louisville to Idaho

When did momondo last update prices for flights from Louisville Intl Airport to Idaho?
Prices for flights from Louisville Intl Airport to Idaho refresh daily.
How many operators does momondo search for flights from Louisville Intl Airport to Idaho?
The number of operators available for flights from Louisville Intl Airport to Idaho is 4 as of October 2026.
How old do you have to be to fly from Louisville Intl Airport to Idaho?
Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Louisville Intl Airport to Idaho.
What documentation or ID do you need to fly to Idaho?
The travel and health documents you'll need for your trip to Idaho may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Idaho. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

Best airlines flying from Louisville to Idaho

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

Airline	Rating	Free Cancellation	Price
United Airlines	PriceFrom $341	Free Cancellation	Rating 7.4 10,351 reviews	Search United Airlines flights
Delta	PriceFrom $354	Free Cancellation	Rating 7.8 8,649 reviews	Search Delta flights
Southwest	PriceFrom $376	Free Cancellation	Rating 7.9 4,216 reviews	Search Southwest flights
American Airlines	PriceFrom $401	Free Cancellation	Rating 7.0 12,162 reviews	Search American Airlines flights

Why use momondo?

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

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Louisville to Idaho. Millions of users trust and use momondo every year so you are in good hands.

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

All flight searches from Louisville to Idaho on momondo can be filtered to show those which offer flexible booking policies.

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

momondo helps you find the best flight between Louisville and Idaho by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

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

If you are not ready to book a flight from Louisville to Idaho now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Idaho and let you know when they change.