What are the cheapest airlines flying from Louisville to Boise round-trip?

Cheapflights users have booked flights from Louisville to Boise round-trip from $228. Other airlines that can offer you cheap pricing are Delta, from $325, and American Airlines, from $351. Spirit Airlines is priced at 50% lower than the current average price of a flight leaving 3 months from now.

What are the cheapest airlines to fly from Louisville to Boise one-way?

The cheapest airlines for a one-way flight from Louisville to Boise are Spirit Airlines ($120), American Airlines ($163), and Delta ($168).

What is the cheapest day to fly from Louisville to Boise?

Travelers seeking maximum savings on their Louisville to Boise flight should consider departing on Friday mornings when fares are most often at their lowest. Sunday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.

In terms of precipitation, rainfall in Boise 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 Boise when rainfall is around 0.2 in.

If weather is an important factor for your trip to Boise, 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).

What are the most popular airlines that fly from Louisville to Boise?

American Airlines, Delta and United Airlines are the most popular airlines when flying from Louisville to Boise.

What is the cheapest day to fly round-trip from Louisville to Boise?

It’s generally more expensive to depart on a Friday, if you have to leave on this day you can still search on Cheapflights to find great options that meet your needs.

What is the cheapest month to fly from Louisville to Boise?

The best pricing can be found in the month of February. Prices to Boise from Louisville average $464. You can even find prices in February for less than $464, as users have found deals to Boise from as low as $342. The month of November appears to be one of the more expensive times to travel to Boise from Louisville. Flying in the targeted month can save you up to 89%.

What is the cheapest time of day to fly from SDF to BOI?

Unlike at noon, when flights are generally more expensive, you can save up to 31% on flights from Louisville to Boise by exploring options for tickets in the afternoon.

Can I find deals for flights from Louisville to Boise that include hotel bookings?

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

How can I find direct flights from Louisville to Boise?

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

Can I find deals for business class flights from Louisville to Boise?

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

$120+ Flights from Louisville to Boise

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Cheap flight deals from Louisville to Boise

Round-trip from	$228 (FlightHub)
One-way from	$120 (FlightHub)
Popular in	November
Cheapest in	February
Average price	$431

From Louisville Intl to Boise Air Term. Gowen Fld

Search Deals

One-way flight from Louisville Intl to Boise Air Term. Gowen Fld

Search Deals

Highest demand for flights based on searches. 15% potential increase in price ($86 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 8% potential price decrease ($38 potential savings vs. average RT price).

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Average for round-trip flights in July 2025

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Find flight deals from Louisville to Boise

Cheapest flights from Louisville to Boise
Explore the most affordable flight options available from Louisville to Boise. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 29, 2025.

Sun 9/144:25 pmSDF - BOI

1 stop29h 56mSpirit Airlines

Thu 9/182:16 pmBOI - SDF

1 stop23h 14mSpirit Airlines

Deal found 7/27

$228

Wed 8/278:10 amSDF - BOI

1 stop6h 25mDelta

Wed 9/31:30 pmBOI - SDF

1 stop8h 26mDelta

Deal found 7/28

$325

Tue 9/236:12 pmSDF - BOI

1 stop20h 15mAmerican Airlines

Wed 10/11:38 pmBOI - SDF

1 stop8h 02mAmerican Airlines

Deal found 7/28

$351

Mon 9/86:00 amSDF - BOI

1 stop6h 10mSouthwest

Fri 9/191:10 pmBOI - SDF

1 stop7h 40mSouthwest

Deal found 7/29

$357

Wed 8/209:31 amSDF - BOI

1 stop6h 04mUnited Airlines

Mon 8/2512:27 pmBOI - SDF

1 stop7h 57mUnited Airlines

Deal found 7/29

$421

Sat 9/1310:14 amSDF - BOI

3 stops29h 07mMultiple Airlines

Thu 9/182:16 pmBOI - SDF

2 stops27h 07mMultiple Airlines

Deal found 7/28

$504

Best flights from Louisville to Boise
Discover carefully curated flight deals from Louisville to Boise that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated July 29, 2025.

Sun 9/144:25 pmSDF - BOI

1 stop29h 56mSpirit Airlines

Thu 9/182:16 pmBOI - SDF

1 stop23h 14mSpirit Airlines

Deal found 7/27

$228

Wed 8/278:10 amSDF - BOI

1 stop6h 25mDelta

Wed 9/31:30 pmBOI - SDF

1 stop8h 26mDelta

Deal found 7/28

$325

Tue 9/236:12 pmSDF - BOI

1 stop20h 15mAmerican Airlines

Wed 10/11:38 pmBOI - SDF

1 stop8h 02mAmerican Airlines

Deal found 7/28

$351

Mon 9/86:00 amSDF - BOI

1 stop6h 10mSouthwest

Fri 9/191:10 pmBOI - SDF

1 stop7h 40mSouthwest

Deal found 7/29

$357

Wed 8/209:31 amSDF - BOI

1 stop6h 04mUnited Airlines

Mon 8/2512:27 pmBOI - SDF

1 stop7h 57mUnited Airlines

Deal found 7/29

$421

Sat 9/1310:14 amSDF - BOI

3 stops29h 07mMultiple Airlines

Thu 9/182:16 pmBOI - SDF

2 stops27h 07mMultiple Airlines

Deal found 7/28

$504

Last-minute flights from Louisville to Boise
Discover last-minute flight deals from Louisville to Boise. Data last updated July 29, 2025 and is based on user searches.

Mon 8/44:45 pmSDF - BOI

1 stop7h 10mAmerican Airlines

Thu 8/71:10 pmBOI - SDF

1 stop7h 52mAmerican Airlines

Deal found 7/28

$675

Mon 8/46:08 pmSDF - BOI

1 stop6h 44mUnited Airlines

Thu 8/75:00 amBOI - SDF

2 stops9h 51mUnited Airlines

Deal found 7/28

$680

Mon 8/410:45 amSDF - BOI

2 stops8h 55mSouthwest

Thu 8/76:15 amBOI - SDF

2 stops9h 25mSouthwest

Deal found 7/28

$685

Thu 8/144:51 pmSDF - BOI

1 stop6h 49mAmerican Airlines

Sat 8/161:36 pmBOI - SDF

1 stop7h 14mAmerican Airlines

Deal found 7/27

$432

Sat 8/167:58 pmSDF - BOI

3 stops23h 13mMultiple Airlines

Sat 8/231:40 pmBOI - SDF

3 stops22h 11mMultiple Airlines

Deal found 7/29

$646

Wed 8/209:31 amSDF - BOI

1 stop6h 04mUnited Airlines

Mon 8/2512:27 pmBOI - SDF

1 stop7h 57mUnited Airlines

Deal found 7/29

$421

Wed 8/206:44 amSDF - BOI

2 stops11h 10mAlaska Airlines

Mon 8/256:00 amBOI - SDF

2 stops9h 38mAlaska Airlines

Deal found 7/28

$676

Thu 8/214:20 pmSDF - BOI

2 stops9h 45mSouthwest

Sun 8/246:05 amBOI - SDF

1 stop8h 00mSouthwest

Deal found 7/28

$482

Wed 8/278:10 amSDF - BOI

1 stop6h 25mDelta

Wed 9/31:30 pmBOI - SDF

1 stop8h 26mDelta

Deal found 7/28

$325

One-way flights from Louisville to Boise
Search for one-way flight options from Louisville to Boise. Find affordable one-way fares based on user searches. Data last updated July 29, 2025.

Fri 9/124:25 pmSDF - BOI

1 stop22h 56mSpirit Airlines

Deal found 7/29

$120

Sat 9/62:24 pmSDF - BOI

1 stop9h 24mAmerican Airlines

Deal found 7/29

$163

Sat 9/66:00 amSDF - BOI

2 stops10h 01mDelta

Deal found 7/28

$168

Fri 9/124:20 pmSDF - BOI

2 stops9h 45mSouthwest

Deal found 7/29

$194

Mon 9/81:00 pmSDF - BOI

2 stops11h 21mUnited Airlines

Deal found 7/29

$250

Mon 9/1510:00 amSDF - BOI

2 stops14h 50mAlaska Airlines

Deal found 7/29

$259

Fly from

Fly to

Route

Depart

Return

Price

LouisvilleBoise

SDF - BOI

SDFBOI

Louisville Intl

Sun 9/14

4:25 pm-8:21 pm

1 stop29h 56m

Boise Air Term. Gowen Fld

Thu 9/18

2:16 pm-3:30 pm

1 stop23h 14m

$228

LouisvilleBoise

SDF - BOI

SDFBOI

Louisville Intl

Wed 8/27

8:10 am-12:35 pm

1 stop6h 25m

Boise Air Term. Gowen Fld

Wed 9/3

1:30 pm-11:56 pm

1 stop8h 26m

$325

LouisvilleBoise

SDF - BOI

SDFBOI

Louisville Intl

Tue 9/23

6:12 pm-12:27 pm

1 stop20h 15m

Boise Air Term. Gowen Fld

Wed 10/1

1:38 pm-11:40 pm

1 stop8h 02m

$351

LouisvilleBoise

SDF - BOI

SDFBOI

Louisville Intl

Mon 9/8

6:00 am-10:10 am

1 stop6h 10m

Boise Air Term. Gowen Fld

Fri 9/19

1:10 pm-10:50 pm

1 stop7h 40m

$357

LouisvilleBoise

SDF - BOI

SDFBOI

Louisville Intl

Wed 8/20

9:31 am-1:35 pm

1 stop6h 04m

Boise Air Term. Gowen Fld

Mon 8/25

12:27 pm-10:24 pm

1 stop7h 57m

$421

LouisvilleBoise

SDF - BOI

SDFBOI

Louisville Intl

Sat 9/13

10:14 am-1:21 pm

3 stops29h 07m

Boise Air Term. Gowen Fld

Thu 9/18

2:16 pm-7:23 pm

2 stops27h 07m

$504

LouisvilleBoise

SDF - BOI

SDFBOI

Louisville Intl

Fri 9/12

4:25 pm-1:21 pm

1 stop22h 56m

$120

LouisvilleBoise

SDF - BOI

SDFBOI

Louisville Intl

Sat 9/6

2:24 pm-9:48 pm

1 stop9h 24m

$163

LouisvilleBoise

SDF - BOI

SDFBOI

Louisville Intl

Sat 9/6

6:00 am-2:01 pm

2 stops10h 01m

$168

LouisvilleBoise

SDF - BOI

SDFBOI

Louisville Intl

Fri 9/12

4:20 pm-12:05 am

2 stops9h 45m

$194

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/29

Showing 1-10 of 12 results

Best time to book a flight from Louisville to Boise

Have a flexible travel schedule? Discover the best time to fly to Boise from Louisville 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.

Cheapflights Insights

Everything you need to know about your flight from Louisville to Boise

What is the cheapest month to book a flight from Louisville to Boise?

Currently, October is the cheapest month in which you can book a flight from Louisville to Boise (average of $314). Flying from Louisville to Boise in June is currently the most expensive (average of $398). 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.

Reviews of airlines servicing Boise

Read through reviews of airlines operating flights from Louisville to Boise, such as Alaska Airlines, Southwest, and Delta. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.

Alaska Airlines

8.0

Very good

10,000 reviews

Reviews

1 / 20

10.0

Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.

Alaska Airlines

8.0

Very good

10,000 reviews

Alaska Airlines

8.0

Very good

10,000 reviews

Reviews

1 / 20

10.0

Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.

Southwest

8.0

Very good

4,238 reviews

Alaska Airlines

8.0

Very good

10,000 reviews

Reviews

1 / 20

10.0

Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.

Delta

8.0

Very good

7,977 reviews

Alaska Airlines

8.0

Very good

10,000 reviews

Reviews

1 / 20

10.0

Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.

United Airlines

7.4

Good

8,899 reviews

Alaska Airlines

8.0

Very good

10,000 reviews

Reviews

1 / 20

10.0

Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.

American Airlines

7.2

Good

10,000 reviews

Alaska Airlines

8.0

Very good

10,000 reviews

Reviews

1 / 20

10.0

Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.

Related info for your journey

What are the cheapest airlines flying from Louisville to Boise round-trip?
Cheapflights users have booked flights from Louisville to Boise round-trip from $228. Other airlines that can offer you cheap pricing are Delta, from $325, and American Airlines, from $351. Spirit Airlines is priced at 50% lower than the current average price of a flight leaving 3 months from now.
What are the cheapest airlines to fly from Louisville to Boise one-way?
The cheapest airlines for a one-way flight from Louisville to Boise are Spirit Airlines ($120), American Airlines ($163), and Delta ($168).
Can I find deals for flights from Louisville to Boise that include hotel bookings?
Yes. In addition to deals on Louisville to Boise flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Louisville to Boise?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Louisville to Boise.
Can I find deals for business class flights from Louisville to Boise?
Yes. Cheapflights offers flight deals from Louisville to Boise 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 Louisville to Boise?
Currently, October is the cheapest month in which you can book a flight from Louisville to Boise (average of $314). Flying from Louisville to Boise in June is currently the most expensive (average of $398). 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

Meridian

Nampa

Ontario

McCall

Caldwell

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Other flights to Boise

Top 4 airlines flying from Louisville to Boise

Airline	Cheapest	Average	Flexibility	On-time
Delta	Cheapest$258	Average$380	FlexibilityNo cancel fee	On-timeN/A
American Airlines	Cheapest$287	Average$416	FlexibilityNo cancel fee	On-time71%
United Airlines	Cheapest$336	Average$646	FlexibilityNo cancel fee	On-time69%
Southwest	Cheapest$351	Average$416	FlexibilityNo cancel fee	On-time63%

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$120+ Cheap flights from Louisville to Boise (SDF - BOI)

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 9/12. Fares are subject to change and may not be available on all flights or dates of travel.

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One-way from

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Find flight deals from Louisville to Boise

Cheapest flights from Louisville to BoiseExplore the most affordable flight options available from Louisville to Boise. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 29, 2025.

Explore the most affordable flight options available from Louisville to Boise. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 29, 2025.

Cheapflights Fare Finder

Use the filters below to find and compare flights from Louisville to Boise that are best for you.

Best time to book a flight from Louisville to Boise

Have a flexible travel schedule? Discover the best time to fly to Boise from Louisville with our price prediction graph.

Cheapflights Insights

Everything you need to know about your flight from Louisville to Boise

What is the cheapest month to book a flight from Louisville to Boise?

Reviews of airlines servicing Boise

Get insights into the airlines that provide service to Boise. 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 Boise. Reviews last updated July 29, 2025.

Read through reviews of airlines operating flights from Louisville to Boise, such as Alaska Airlines, Southwest, and Delta. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

Find useful and relevant information for your journey from Louisville to Boise. 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 flying from Louisville to Boise round-trip?

What are the cheapest airlines to fly from Louisville to Boise one-way?

Can I find deals for flights from Louisville to Boise that include hotel bookings?

How can I find direct flights from Louisville to Boise?

Can I find deals for business class flights from Louisville to Boise?

What is the cheapest month to book a flight from Louisville to Boise?

Traveling to a place near Boise?

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Alternative routes for Louisville to Boise

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Top 4 airlines flying from Louisville to Boise

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Cheapest flights from Louisville to Boise
Explore the most affordable flight options available from Louisville to Boise. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 29, 2025.