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

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

What airlines fly to Idaho?

Delta, American Airlines and United Airlines are the top three most popular airlines that fly to Idaho from Louisville according to our data. Delta is the first choice among our users, with 40% of people opting to fly with this airline when traveling to Idaho. Keep in mind that there are 3 different airlines that fly to Idaho on a routine basis, so you have a few additional options to choose from.

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 May 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.

$198 Cheap Flights from Louisville to Idaho in 2026

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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.

6:00 am - 11:36 am

SDF

GEG

8h 36m

1 stop

12:47 pm - 12:32 am

GEG

SDF

8h 45m

1 stop

$395Delta

Tue, Jun 16 - Tue, Jun 23

6:49 am - 10:57 am

SDF

BOI

6h 08m

1 stop

2:04 pm - 12:26 am

BOI

SDF

8h 22m

1 stop

$395Delta

Tue, Jul 21 - Wed, Jul 29

4:00 pm - 7:20 pm

SDF

GEG

6h 20m

1 stop

12:40 pm - 11:59 pm

GEG

SDF

8h 19m

1 stop

$408Delta

Tue, Sep 8 - Sat, Sep 19

3:20 pm - 9:08 pm

SDF

IDA

7h 48m

1 stop

7:00 am - 2:27 pm

IDA

SDF

5h 27m

1 stop

$419United Airlines

Tue, Oct 27 - Sat, Oct 31

1:20 pm - 7:20 pm

SDF

GEG

9h 00m

1 stop

7:00 am - 6:43 pm

GEG

SDF

8h 43m

1 stop

$421Delta

Thu, Sep 10 - Mon, Sep 14

1:00 pm - 10:53 pm

SDF

IDA

11h 53m

2 stops

7:00 am - 2:27 pm

IDA

SDF

5h 27m

1 stop

$424United Airlines

Tue, Oct 27 - Sat, Oct 31

2:30 pm - 8:20 pm

SDF

BOI

7h 50m

1 stop

5:30 am - 5:10 pm

BOI

SDF

9h 40m

2 stops

$431Southwest

Sun, Jul 5 - Tue, Jul 21

5:25 pm - 10:55 pm

SDF

BOI

7h 30m

2 stops

12:20 pm - 12:25 am

BOI

SDF

10h 05m

2 stops

$436Southwest

Tue, Jul 21 - Mon, Jul 27

7:16 am - 12:14 pm

SDF

IDA

6h 58m

1 stop

2:12 pm - 11:19 pm

IDA

SDF

7h 07m

1 stop

$453American Airlines

Fri, May 29 - Tue, Jun 2

1:21 pm - 7:24 pm

SDF

JAC

8h 03m

1 stop

4:15 pm - 10:03 am

JAC

SDF

15h 48m

2 stops

$522American Airlines

Tue, Jun 23 - Tue, Jul 7

American Airlines flights from Louisville to Idaho

Our best American Airlines deals on Louisville to Idaho flight tickets

American Airlines

Aug 25

SDF11:04 amLouisville Intl

6h 08m

1 stop

JAC3:12 pmJackson Hole

Sep 1

JAC11:48 amJackson Hole

8h 29m

1 stop

SDF10:17 pmLouisville Intl

$389

American Airlines

May 29

SDF7:16 amLouisville Intl

6h 58m

1 stop

IDA12:14 pmIdaho Falls Fanning Field

Jun 2

IDA2:12 pmIdaho Falls Fanning Field

7h 07m

1 stop

SDF11:19 pmLouisville Intl

$453

American Airlines

Jun 10

SDF6:51 amLouisville Intl

9h 20m

1 stop

GEG1:11 pmSpokane

Jun 16

GEG12:51 pmSpokane

7h 28m

1 stop

SDF11:19 pmLouisville Intl

$469

Southwest flights from Louisville to Idaho

Our best Southwest deals on Louisville to Idaho flight tickets

Southwest

Jul 5

SDF2:30 pmLouisville Intl

7h 50m

1 stop

BOI8:20 pmBoise Air Term. Gowen Fld

Jul 21

BOI5:30 amBoise Air Term. Gowen Fld

9h 40m

2 stops

SDF5:10 pmLouisville Intl

$431

Southwest

Jul 21

SDF5:25 pmLouisville Intl

7h 30m

2 stops

BOI10:55 pmBoise Air Term. Gowen Fld

Jul 27

BOI12:20 pmBoise Air Term. Gowen Fld

10h 05m

2 stops

SDF12:25 amLouisville Intl

$436

Southwest

Jul 21

SDF4:15 pmLouisville Intl

8h 40m

2 stops

BOI10:55 pmBoise Air Term. Gowen Fld

Jul 27

BOI12:05 pmBoise Air Term. Gowen Fld

10h 20m

1 stop

SDF12:25 amLouisville Intl

$437

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

LouisvilleSpokane

SDF - GEG

SDFGEG

Louisville Intl

Tue 6/16

6:00 am-11:36 am

1 stop8h 36m

Spokane

Tue 6/23

12:47 pm-12:32 am

1 stop8h 45m

$395

LouisvilleBoise

SDF - BOI

SDFBOI

Louisville Intl

Tue 7/21

6:49 am-10:57 am

1 stop6h 08m

Boise Air Term. Gowen Fld

Wed 7/29

2:04 pm-12:26 am

1 stop8h 22m

$395

LouisvilleSpokane

SDF - GEG

SDFGEG

Louisville Intl

Tue 9/8

4:00 pm-7:20 pm

1 stop6h 20m

Spokane

Sat 9/19

12:40 pm-11:59 pm

1 stop8h 19m

$408

Quickest round-trip

LouisvilleIdaho Falls

SDF - IDA

SDFIDA

Louisville Intl

Tue 10/27

3:20 pm-9:08 pm

1 stop7h 48m

Idaho Falls Fanning Field

Sat 10/31

7:00 am-2:27 pm

1 stop5h 27m

$419

LouisvilleSpokane

SDF - GEG

SDFGEG

Louisville Intl

Thu 9/10

1:20 pm-7:20 pm

1 stop9h 00m

Spokane

Mon 9/14

7:00 am-6:43 pm

1 stop8h 43m

$421

LouisvilleIdaho Falls

SDF - IDA

SDFIDA

Louisville Intl

Tue 10/27

1:00 pm-10:53 pm

2 stops11h 53m

Idaho Falls Fanning Field

Sat 10/31

7:00 am-2:27 pm

1 stop5h 27m

$424

LouisvilleBoise

SDF - BOI

SDFBOI

Louisville Intl

Sun 7/5

2:30 pm-8:20 pm

1 stop7h 50m

Boise Air Term. Gowen Fld

Tue 7/21

5:30 am-5:10 pm

2 stops9h 40m

$431

LouisvilleBoise

SDF - BOI

SDFBOI

Louisville Intl

Tue 7/21

5:25 pm-10:55 pm

2 stops7h 30m

Boise Air Term. Gowen Fld

Mon 7/27

12:20 pm-12:25 am

2 stops10h 05m

$436

LouisvilleIdaho Falls

SDF - IDA

SDFIDA

Louisville Intl

Fri 5/29

7:16 am-12:14 pm

1 stop6h 58m

Idaho Falls Fanning Field

Tue 6/2

2:12 pm-11:19 pm

1 stop7h 07m

$453

LouisvilleJackson

SDF - JAC

SDFJAC

Louisville Intl

Tue 6/23

1:21 pm-7:24 pm

1 stop8h 03m

Jackson Hole

Tue 7/7

4:15 pm-10:03 am

2 stops15h 48m

$522

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

What is the cheapest month to fly to Idaho?

In general, August 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 $196. If you don’t want to visit Idaho in August, then you should wait until October to fly from Louisville, when ticket prices are also cheap, with an average price of $287.

Can stopping save me money on Louisville to Idaho flights?

You could potentially save up to 23% on your flight if you consider stops on a Louisville to Idaho flight.

Cheap Louisville to Idaho flight deals and tips

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

Fastest flight time	6h 17m
Direct flights	None

The fastest flight from Louisville to Idaho takes 6h 17m

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 May 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
Delta	PriceFrom $196	Free Cancellation	Rating 7.9 8,452 reviews	Search Delta flights
American Airlines	PriceFrom $287	Free Cancellation	Rating 7.1 11,645 reviews	Search American Airlines flights
United Airlines	PriceFrom $341	Free Cancellation	Rating 7.4 9,733 reviews	Search United 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.