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

Delta, American Airlines, and United Airlines 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 43% 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.

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 April 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.

$188 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.

6:51 am - 1:14 pm

SDF

GEG

9h 23m

1 stop

12:51 pm - 11:19 pm

GEG

SDF

7h 28m

1 stop

$375American Airlines

Tue, Jun 2 - Tue, Jun 16

7:49 pm - 11:46 pm

SDF

BOI

5h 57m

1 stop

11:45 pm - 10:32 am

BOI

SDF

8h 47m

1 stop

$375Delta

Tue, Jun 2 - Wed, Jun 10

2:34 pm - 11:06 pm

SDF

GEG

11h 32m

2 stops

12:35 pm - 11:54 pm

GEG

SDF

8h 19m

1 stop

$380Delta

Tue, Jun 2 - Tue, Jun 16

7:49 pm - 11:46 pm

SDF

BOI

5h 57m

1 stop

12:00 pm - 11:54 pm

BOI

SDF

9h 54m

2 stops

$380Delta

Tue, Jun 2 - Wed, Jun 10

6:07 am - 12:41 pm

SDF

JAC

8h 34m

1 stop

1:25 pm - 11:11 pm

JAC

SDF

7h 46m

1 stop

$389American Airlines

Tue, May 5 - Sat, May 9

5:45 pm - 10:15 pm

SDF

GEG

7h 30m

1 stop

6:15 am - 4:55 pm

GEG

SDF

7h 40m

1 stop

$399Southwest

Sat, May 2 - Sat, May 9

5:45 pm - 10:15 pm

SDF

GEG

7h 30m

1 stop

6:15 am - 5:45 pm

GEG

SDF

8h 30m

2 stops

$404Southwest

Sat, May 2 - Sat, May 9

10:00 am - 8:53 pm

SDF

JAC

12h 53m

2 stops

7:00 am - 2:31 pm

JAC

SDF

5h 31m

1 stop

$430United Airlines

Thu, Apr 16 - Mon, Apr 20

6:00 am - 3:39 pm

SDF

IDA

11h 39m

2 stops

2:30 pm - 10:39 pm

IDA

SDF

6h 09m

1 stop

$595United Airlines

Tue, Apr 14 - Sat, Apr 18

6:00 am - 4:19 pm

SDF

IDA

12h 19m

2 stops

6:00 am - 9:30 pm

IDA

SDF

13h 30m

2 stops

$654Alaska Airlines

Wed, Apr 15 - Sun, Apr 19

Southwest flights from Louisville to Idaho

Our best Southwest deals on Louisville to Idaho flight tickets

Southwest

May 2

SDF5:45 pmLouisville Intl

7h 30m

1 stop

GEG10:15 pmSpokane

May 9

GEG6:15 amSpokane

7h 40m

1 stop

SDF4:55 pmLouisville Intl

$399

Southwest

May 2

SDF5:45 pmLouisville Intl

7h 30m

1 stop

GEG10:15 pmSpokane

May 9

GEG6:15 amSpokane

8h 30m

2 stops

SDF5:45 pmLouisville Intl

$404

Southwest

May 2

SDF3:15 pmLouisville Intl

10h 00m

2 stops

GEG10:15 pmSpokane

May 9

GEG6:15 amSpokane

8h 30m

2 stops

SDF5:45 pmLouisville Intl

$409

Delta flights from Louisville to Idaho

Our best Delta deals on Louisville to Idaho flight tickets

Delta

Jun 2

SDF7:49 pmLouisville Intl

5h 57m

1 stop

BOI11:46 pmBoise Air Term. Gowen Fld

Jun 10

BOI11:45 pmBoise Air Term. Gowen Fld

8h 47m

1 stop

SDF10:32 amLouisville Intl

$375

Delta

Jun 2

SDF7:49 pmLouisville Intl

5h 57m

1 stop

BOI11:46 pmBoise Air Term. Gowen Fld

Jun 10

BOI12:00 pmBoise Air Term. Gowen Fld

9h 54m

2 stops

SDF11:54 pmLouisville Intl

$380

Delta

Apr 28

SDF1:00 pmLouisville Intl

10h 56m

2 stops

BOI9:56 pmBoise Air Term. Gowen Fld

May 6

BOI11:35 pmBoise Air Term. Gowen Fld

12h 16m

2 stops

SDF1:51 pmLouisville Intl

$386

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

LouisvilleSpokane

SDF - GEG

SDFGEG

Louisville Intl

Tue 6/2

6:51 am-1:14 pm

1 stop9h 23m

Spokane

Tue 6/16

12:51 pm-11:19 pm

1 stop7h 28m

$375

Quickest round-trip

LouisvilleBoise

SDF - BOI

SDFBOI

Louisville Intl

Tue 6/2

7:49 pm-11:46 pm

1 stop5h 57m

Boise Air Term. Gowen Fld

Wed 6/10

11:45 pm-10:32 am

1 stop8h 47m

$375

LouisvilleSpokane

SDF - GEG

SDFGEG

Louisville Intl

Tue 6/2

2:34 pm-11:06 pm

2 stops11h 32m

Spokane

Tue 6/16

12:35 pm-11:54 pm

1 stop8h 19m

$380

LouisvilleBoise

SDF - BOI

SDFBOI

Louisville Intl

Tue 6/2

7:49 pm-11:46 pm

1 stop5h 57m

Boise Air Term. Gowen Fld

Wed 6/10

12:00 pm-11:54 pm

2 stops9h 54m

$380

LouisvilleJackson

SDF - JAC

SDFJAC

Louisville Intl

Tue 5/5

6:07 am-12:41 pm

1 stop8h 34m

Jackson Hole

Sat 5/9

1:25 pm-11:11 pm

1 stop7h 46m

$389

LouisvilleSpokane

SDF - GEG

SDFGEG

Louisville Intl

Sat 5/2

5:45 pm-10:15 pm

1 stop7h 30m

Spokane

Sat 5/9

6:15 am-4:55 pm

1 stop7h 40m

$399

LouisvilleSpokane

SDF - GEG

SDFGEG

Louisville Intl

Sat 5/2

5:45 pm-10:15 pm

1 stop7h 30m

Spokane

Sat 5/9

6:15 am-5:45 pm

2 stops8h 30m

$404

LouisvilleJackson

SDF - JAC

SDFJAC

Louisville Intl

Thu 4/16

10:00 am-8:53 pm

2 stops12h 53m

Jackson Hole

Mon 4/20

7:00 am-2:31 pm

1 stop5h 31m

$430

LouisvilleIdaho Falls

SDF - IDA

SDFIDA

Louisville Intl

Tue 4/14

6:00 am-3:39 pm

2 stops11h 39m

Idaho Falls Fanning Field

Sat 4/18

2:30 pm-10:39 pm

1 stop6h 09m

$595

LouisvilleIdaho Falls

SDF - IDA

SDFIDA

Louisville Intl

Wed 4/15

6:00 am-4:19 pm

2 stops12h 19m

Idaho Falls Fanning Field

Sun 4/19

6:00 am-9:30 pm

2 stops13h 30m

$654

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, September 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 $311. If you don’t want to visit Idaho in September, then you should wait until August to fly from Louisville, when ticket prices are also cheap, with an average price of $332.

Can stopping save me money on Louisville to Idaho flights?

You could potentially save up to 25% 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	5h 42m
Direct flights	None

The fastest flight from Louisville to Idaho takes 5h 42m

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 April 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 8,374 reviews	Search Delta flights
American Airlines	PriceFrom $287	Free Cancellation	Rating 7.1 11,551 reviews	Search American Airlines flights
United Airlines	PriceFrom $341	Free Cancellation	Rating 7.4 9,538 reviews	Search United Airlines flights
Southwest	PriceFrom $346	Free Cancellation	Rating 8.0 4,344 reviews	Search Southwest 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.