BOI - SDF

$174 Find Cheap Flights from Boise to Louisville - Compare and Save

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Boise to Louisville departing on 10/1. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

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Everything you should know

Cheapest round-trip
$359
Typical prices: $466-$524
United Airlines
Fri 9/4Sun 9/6
BOI - SDF • 1 stop
Cheapest one-way
$174
Delta
Thu 10/1
BOI - SDF • 1 stop
Top airlines
Cheapest • from $359 (round-trip)
Best reviews • 8.0 score
Airline reviews
Airline reviews
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Airline reviews
Airline reviews
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Nonstop flights
Not available
There are currently no direct flights between Boise and Louisville. You'll need at least 1 connection.
Insights
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Top layover airports
Cheapest • Avg $436 (round-trip)
Shortest trip • 6h 05m (one-way)
Insights
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Insights
Insights
When to travel
Cheapest • 28% price drop
Most popular
Good to know
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Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Boise to Louisville (BOI-SDF)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Boise to Louisville that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Boise to Louisville

Fri, Sep 4 - Sun, Sep 6
United Airlines Logo
2:44 pm - 10:31 pmBOI  Boise Air Term. Gowen Fld-SDF Louisville Intl
5h 47m1 stop Denver Intl
United Airlines Logo
7:10 am - 11:28 amSDF  Louisville Intl-BOI Boise Air Term. Gowen Fld
6h 18m1 stop Chicago O'Hare Intl
$359United Airlines
Fri, Sep 4 - Sun, Sep 6
United Airlines Logo
12:24 pm - 8:36 pmBOI  Boise Air Term. Gowen Fld-SDF Louisville Intl
6h 12m1 stop Chicago O'Hare Intl
United Airlines Logo
8:00 am - 3:31 pmSDF  Louisville Intl-BOI Boise Air Term. Gowen Fld
9h 31m2 stops Denver Intl San Francisco
$364United Airlines
Sat, Aug 22 - Wed, Aug 26
American Airlines Logo
12:12 pm - 10:17 pmBOI  Boise Air Term. Gowen Fld-SDF Louisville Intl
8h 05m1 stop Dallas/Fort Worth
American Airlines Logo
5:29 pm - 10:11 pmSDF  Louisville Intl-BOI Boise Air Term. Gowen Fld
6h 42m1 stop Dallas/Fort Worth
$379American Airlines
Fri, Sep 4 - Thu, Sep 10
American Airlines Logo
12:12 pm - 10:17 pmBOI  Boise Air Term. Gowen Fld-SDF Louisville Intl
8h 05m1 stop Dallas/Fort Worth
American Airlines Logo
4:19 pm - 10:27 pmSDF  Louisville Intl-BOI Boise Air Term. Gowen Fld
8h 08m1 stop Dallas/Fort Worth
$379American Airlines
Tue, Aug 18 - Sat, Aug 22
Southwest Logo
7:05 am - 5:55 pmBOI  Boise Air Term. Gowen Fld-SDF Louisville Intl
8h 50m1 stop Phoenix Sky Harbor Intl
Southwest Logo
2:55 pm - 9:30 pmSDF  Louisville Intl-BOI Boise Air Term. Gowen Fld
8h 35m1 stop Denver Intl
$379Southwest
Tue, Aug 18 - Sat, Aug 22
Southwest Logo
7:05 am - 5:55 pmBOI  Boise Air Term. Gowen Fld-SDF Louisville Intl
8h 50m1 stop Phoenix Sky Harbor Intl
Southwest Logo
2:55 pm - 9:30 pmSDF  Louisville Intl-BOI Boise Air Term. Gowen Fld
8h 35m1 stop Denver Intl
$379Southwest
Tue, Sep 1 - Mon, Sep 7
Delta Logo
2:53 pm - 11:56 pmBOI  Boise Air Term. Gowen Fld-SDF Louisville Intl
7h 03m1 stop Minneapolis St Paul
Delta Logo
6:50 am - 1:42 pmSDF  Louisville Intl-BOI Boise Air Term. Gowen Fld
8h 52m1 stop Minneapolis St Paul
$413Delta
Thu, Aug 27 - Sun, Aug 30
Delta Logo
11:10 pm - 10:32 amBOI  Boise Air Term. Gowen Fld-SDF Louisville Intl
9h 22m1 stop Atlanta Hartsfield-Jackson
Delta Logo
7:54 pm - 11:59 pmSDF  Louisville Intl-BOI Boise Air Term. Gowen Fld
6h 05m1 stop Minneapolis St Paul
$437Delta
Tue, Nov 10 - Sat, Nov 14
Alaska Airlines Logo
6:33 am - 9:36 pmBOI  Boise Air Term. Gowen Fld-SDF Louisville Intl
13h 03m2 stops Seattle/Tacoma Intl Chicago O'Hare Intl
Alaska Airlines Logo
1:32 pm - 11:51 pmSDF  Louisville Intl-BOI Boise Air Term. Gowen Fld
12h 19m2 stops Chicago O'Hare Intl Seattle/Tacoma Intl
$633Alaska Airlines
Tue, Sep 1 - Mon, Sep 7
Alaska Airlines Logo
4:28 pm - 6:00 pmBOI  Boise Air Term. Gowen Fld-SDF Louisville Intl
23h 32m2 stops Portland Chicago O'Hare Intl
Alaska Airlines Logo
5:53 pm - 9:56 amSDF  Louisville Intl-BOI Boise Air Term. Gowen Fld
18h 03m2 stops Dallas/Fort Worth Seattle/Tacoma Intl
$772Alaska Airlines
Booking Insights

KAYAK's insights & trends for Boise to Louisville flights

Get data-powered insights and trends into flights from Boise to Louisville to help you find the cheapest flights, the best time to fly and much more.

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Boise to Louisville, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Boise to Louisville is May, where tickets cost $436 (return) on average. On the other hand, the most expensive months are October and March, where the average cost of round-trip tickets is $1,470 and $833 respectively.

Good to know

Low season

March

Cheapest flight

$174
Best time to beat the crowds but there is an average 37% increase in price.
Most popular time to fly and prices are also 21% lower on average.
Flight from Boise to Louisville

When to book flights from Boise to Louisville

Are your dates flexible? Find out the best times to travel from Boise to Louisville based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from Boise to Louisville

  • What is the cheapest flight from Boise to Louisville?

    In the last 5 days, the lowest price for a flight from Boise to Louisville was $174 for a one-way ticket and $359 for a round-trip.

  • Do I need a passport to fly between Boise and Louisville?

    No

  • Which airports will I be using when flying from Boise to Louisville?

    When flying out of Boise you will be using Boise Air Term. Gowen Fld. You will be landing at Louisville, also known as Louisville Intl.

  • Which aircraft models fly most regularly from Boise to Louisville?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from Boise to Louisville?

    SkyTeam, oneworld, and Star Alliance are the airline alliances operating flights between Boise and Louisville, with SkyTeam being the most commonly used for this route.

  • Which is the best airline for flights from Boise to Louisville, Southwest or Delta?

    The two airlines most popular with KAYAK users for flights from Boise to Louisville are Southwest and Delta. With an average price for the route of $524 and an overall rating of 8.0, Southwest is the most popular choice. Delta is also a great choice for the route, with an average price of $466 and an overall rating of 7.8.

  • How does KAYAK find such low prices on flights from Boise to Louisville?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Boise to Louisville.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Boise to Louisville?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Louisville from Boise is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Boise to Louisville?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Louisville with an airline and back to Boise with another airline. Booking your flights between Boise and SDF can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Boise to Louisville?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Louisville from Boise up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top 4 airlines serving from Boise to Louisville

 
See real verified KAYAK customer reviews for airlines flying from Boise to Louisville. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Boise to Louisville? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
8.0
SouthwestOverall score based on 4215 reviews
8.0Comfort
7.0Food
7.5Entertainment
8.1Boarding
8.6Crew
Airline reviews

Fairly good - the seats seemed more comfortable on this flight. The staff out of Detroit were quite friendly. But they directed us to the wrong carousel for luggage. :(

8.0 ExcellentDavid, Aug 2026
Read more Southwest reviews

Fairly good - the seats seemed more comfortable on this flight. The staff out of Detroit were quite friendly. But they directed us to the wrong carousel for luggage. :(

Just crazy with times being pushed and pushed and pushed and gate crew at Philly super rude and unprofessional with many under stress with delays.

I liked the new boarding process. I thought the buyup options (legroom, early boarding) to be easy to request and reasonably priced. All the Southwest team from gate to in-flight were so nice.

Flight time kept changing and so did the gate. It was very frustrating

Exceptional. The gate crew responded quickly and got me onto this earlier flight as the final passenger, saving me more than four hours of wait time for my reserved flight.

The flight was delayed due to earlier issues at other airports. The crew was excellent & made it a good trip.

Boarding process of asking for volunteers to check bags goes against the system you had before with 2 bags checked free. This process is more of a guilt trip than a caring attitude toward the customer. In addition bag-size scrutiny has increased which also slows down the process of boarding. My wife said she will not fly on your airline again unless there is no other option.

The WiFi and crew on the plane were good, however, the boarding experience was awful. I paid for the Choice Preferred and was boarded in group 5 so all overhead storage was full. They found room for our luggage, but further back making getting off the plane a nightmare. Also, we were in row 6 and the seats were extremely uncomfortable. Both my daughter and I had no leg room and couldn’t wait to get off the plane.

The seats were a bit cramped and worn, but otherwise okay.

Since the flight wasn’t full, we had some extra room. Crew was great

There is consistently no communication/updated time slots in the app on when a flight will board when its delayed, which is the most frustrating as a consumer trying to understand if they need to get food now, or if there is actually a chance for them to eat during their layover. This keeps being my experience with delta and a potential reason to change airlines.

Long delays at both DCA and MSP; Crew did not keep us informed (or very little). Airplane was showing signs of heavy use (not up to Delta standards). Food options for Business Class have dropped in quality. After landing we sat on tarmac for maybe 25 minutes with no provided chance to use the bathroom and crew did not tell us what was going on or give an estimated time to expect to be at a gate.

Both of my flights to and from JFK experienced significant delays. Most notably, my first flight was delayed by six hours due to crew members being affected by delays on a previous flight. While I understand that disruptions can occur, Delta’s staffing and operational planning should include sufficient contingency measures to handle situations like this rather than placing the full burden of those delays on customers. Additionally, the $12 meal voucher offered as compensation was inadequate, particularly given the high cost of food and beverages at the airport. Considering the length of the delay and the substantial inconvenience caused, I believe more meaningful compensation would have been appropriate.

This flight was a first class choice and left much to be desired. Seat backs on seats were falling apart and torn. Seats actually didn't come to a "full & upright position". Pull out table was sprung. Not any significant leg room. All in all we were on an obviously older plane and felt overcharged for what we received as first class.

Lady Pilot was perfect in every way wheels up to wheels down communication, professionalism, excellent on time departure and on time arrival, excellent communication! Fantastic job with Superb attitude!!

My husband is very tall and we generally fly Delta Comfort. We used our companion benefit, and our seats were coach and extremely uncomfortable........ horrid even

I specifically picked out right side aisle seats because my left knee sometimes needs to be stretched. But my experience this trip was that the seats were shuffled and I lost those assigned seats, resulting in me having to sit in a much less desirable position for my comfort.

Other airlines were canceling flights but Delta got us home. Crew was friendly and professional. It would have been nice to have had a little more notice about the delays because we had already arrived at the airport when the first of several delays were communicated but I understand that storm forecasting isn’t simple and we were grateful that Delta didn’t just cancel the flight.

On time departure, smooth trip, flight attendant told through passengers the gate we would arrive at and the gate our outbound flight was departing from. Early arrival

On time departure and early arrival. Kind and professional service from flight crew

Like the fact that the boarding was expedited. But the delay and chaos around the onboarding was not appreciated.

Flight was 2.5 late. Maybe not United’s fault but late none the less. We were late as well on the first leg. WiFi quit working with an hour left.

Old 757 with poor entertainment system. United no longer partners with United for free text and email. O'Hara an absolute disaster! Limited gates clauses two hour delay. Unfortunately this appears to be the norm.

The flight to America was freezing. The overnight flight back to the UK was boiling hot and the cabin stank of toilet or occasionally perfume, even though I was several rows back from either bathroom. Food was tiny portions. Two small pieces of tough and dry beef in random gravy with pretend mashed potato raking up most of it. Very little veg. Salad was ok. Wooden cutlery broke within minutes of using. Lots of old films for entertainment. Some new ones. Generally a bit rubbish.

It was hot and not as comfortable as the flight to Chicago. Must have been a different plane that needs to be worked on or replaced.

Read the fine print. This was my flight home. I booked my flight for the quickest way home. Had a carry-on and a personal item. Same as my outbound flight. Apparently I needed to pre-pay extra for my carry-on. When I checked in, I was told that I had to check it. I said I’ll pay for it, and was told that this wasn’t an option anymore. They said I still had to pay $50 to check my carry-on. I told them I’ll pay whatever to just carry it in as intended. I was not allowed, so eventually I paid $50 to check my carry-on under a plane that was half full, with overhead compartments that were even less full. My white carry-on suitcase was practically destroyed getting from Idaho falls to Denver to Orange County. The low price air fair was a bait and switch. Got me to the gate, made me pay extra, then didn’t even allow me to pay for a carry on. Not to mention that I paid the $8 for WiFi that didn’t work. All to get my suitcase destroyed. I don’t think I’m going to even keep my Untied mileage plus membership and card. Apparently, membership does not have its privileges for this one.

Delayed - weather wasn't bad at either end. Also sat on tarmac in ORD.

During landing. 2 crew members passed 3 times by my lane and didn't notice that people in front of us had their site to the furthermore reclined... That was uncomfortable and could have been dangerous.

Short flight, but no drink/snack service. The flights both going and coming were delayed.

United Airlines was fantastic, however, UnderPricer was a nightmare. I got to the airport 4 hours before my flight. We are moving to New Zealand so had quite a bit of baggage (16 checked items) and so wanted to have plenty of time to get everything taken care of properly. When I went to check in they (United) could only find a ticket for me. The 5 tickets for my children were never officially ticketed. I called Underpricer and they told me it was United's fault and United told me that Underpricer just needs to reissue the tickets, but they refused to. I asked the Underpricer agent to transfer me to his supervisor as I was not getting the help I needed. He told me the supervisor was busy but that he would call me back in 30 minutes. 30 minutes came and went with no phone call. After an hour I called Underpricer back but they would not let me talk to the person I had talked to before, just told me that he was talking with the supervisor and technical support. I called again an hour later, was told the same thing. I tried again later, with only about 30 minutes until my flight was scheduled to leave (meaning I had been at the airport for more than 3 hours with my 5 children trying to get ticketed and board the flight). Also, my husband had moved to New Zealand 3 months prior, I haven't seen him in 3 months, my children hadn't seen their dad in 3 months, we were all extremely eager to get on that flight and get to New Zealand. The situation with the tickets did not get resolved until after it was too late to check our luggage and board our flight. We were devastated. My 11 year old son was in tears at not being able to be on his way to see his dad. Thankfully we were rebooked for the next evening, but that night it felt devastating. We'd been at the airport for 4 hours waiting. My in-laws waited with me and then helped me reload all our baggage and took us home to stay with them for the night. On the newly booked flights we could not sit together - my children were spread throughout the plane. So, even though I had paid extra to select our seats after buying my seats from Underpricer only two of us were able to sit together (thankful that my 11 year old wasn't all by himself, but not happy that my 14 & 16 year old daughters were seated by strangers). I really feel that Underpricer should refund me what I paid for the seating ($120 USD). It was a very frustrating situation and I plan on never using Kayak or Underpricer ever again.

The gate got changed several times and the flight was delayed over an hour. Awful experience

It was an older plane. First Class was not especially roomy or comfortable. It was a short flight so there were no meal but they did offer mixed nuts which used to be normal but now is rare. Crew member was very polite and professional.

No Snacks or Entertainment. The flight was short, snacks should still be given.

The boarding process needs to be fixed. The zone don't work, especially when there is hardly anyone in zones 3, 4,and 5, leaving the majority of the passengers backed up in the aisle, especially because passengers seated near the front are blocking passengers who are seated in the rear of the plane. It would also help if the size of carry on bags was more strictly enforced.

My Internet did not work for Outlook email or basically anything. I paid for one hour of in-flight usage and it was terrible. I spent a lot of time on different sites and browsers with no luck and a lot of frustration. Other than that, the flight was on time, crew was nice, service was fine. Seat was OK even though I paid for the extra 6 inches. I cannot imagine how tight the seats in the back must be.

Everything was fine. Flight boarded and departed on time. Seating was spacious enough for my carryon to fit under the seat in front of me. No complaints at all. Flight even arrived early.

Boston ticket agent Cheryl Porter is WONDERFUL. Our Iberia flight to Barcelona was cancelled the morning we were scheduled to leave and Cheryl was our super hero - she found us seats on a flight to London and on to Barcelona. Truly a “can-do” attitude which we appreciated so much after the Iberia ticket agents told us there was “absolutely nothing they could do”. (As did the customer service agents at Iberia’s call center) Ms Porter is truly a wonderful person who genuinely cares about travelers!

I was not given the option to get on a different flight even though I was going to miss my connection due to weather delays (I did). When I called early in the morning, they said it wasn't delayed long enough; though I knew it would be by the time it was time for the flight ... it was and by that time it was too late. I wasn't given the option to pre-board with my toddler, and the food service was less than normal due to delays .... at least that's what the crew said.

American is a steady for me. I always get what I expect from them. Sincere effort to get me from one place to another.

Nothing wrong on this flight but nothing special. It was oversold and they had to bump people which is always bad.

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

Information on your arrival and departure airports