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$156+ Cheap flights from San Francisco to Louisville (SFO - SDF)

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 5/2. Fares are subject to change and may not be available on all flights or dates of travel.
SFO — SDF
Apr 9 — Apr 161
Thu 4/9
Thu 4/16
1 adult, Economy
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Find cheap flights from San Francisco to Louisville with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

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Cheapflights Tip: The best prices from San Francisco to Louisville Intl are usually found in November or August, booked 88 days in advance, depart on a Wednesday or Tuesday and return on a Tuesday

Cheap flight deals from San Francisco to Louisville

Cheapest flights from San Francisco to Louisville
Explore the most affordable flight options available from San Francisco to Louisville. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 10, 2026.

This Kiwi.com deal was found by Cheapflights users on 3/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/1812:18 pm
SFO
-
SDF
Nonstop4h 30m
Multiple Airlines
Wed 5/209:21 am
SDF
-
SFO
1 stop15h 13m
Multiple Airlines
Deal found 3/8$353
This United Airlines deal was found by Cheapflights users on 3/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/55:00 am
SFO
-
SDF
1 stop6h 41m
United Airlines
Tue 5/126:00 am
SDF
-
SFO
1 stop7h 42m
United Airlines
Deal found 3/10$354
This Kiwi.com deal was found by Cheapflights users on 3/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/2512:18 pm
SFO
-
SDF
Nonstop4h 30m
Breeze Airways
Mon 6/19:31 am
SDF
-
SFO
Nonstop5h 02m
Breeze Airways
Deal found 3/6$358
This Southwest deal was found by Cheapflights users on 3/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/315:40 am
SFO
-
SDF
1 stop6h 30m
Southwest
Tue 4/147:15 pm
SDF
-
SFO
1 stop7h 20m
Southwest
Deal found 3/8$359
This Kiwi.com deal was found by Cheapflights users on 3/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/268:20 pm
SFO
-
SDF
2 stops33h 31m
Multiple Airlines
Mon 6/19:31 am
SDF
-
SFO
Nonstop5h 02m
Multiple Airlines
Deal found 3/6$365
This Kiwi.com deal was found by Cheapflights users on 3/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/2810:24 pm
SFO
-
SDF
2 stops38h 15m
Multiple Airlines
Mon 6/19:31 am
SDF
-
SFO
Nonstop5h 02m
Multiple Airlines
Deal found 3/6$366
This Kiwi.com deal was found by Cheapflights users on 3/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/812:18 pm
SFO
-
SDF
Nonstop4h 30m
Multiple Airlines
Mon 5/117:48 pm
SDF
-
SFO
2 stops24h 06m
Multiple Airlines
Deal found 3/6$367
This Southwest deal was found by Cheapflights users on 3/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/611:25 pm
SFO
-
SDF
1 stop7h 25m
Southwest
Wed 4/88:55 am
SDF
-
SFO
1 stop6h 40m
Southwest
Deal found 3/5$369
This Kiwi.com deal was found by Cheapflights users on 3/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/268:20 pm
SFO
-
SDF
2 stops33h 31m
Multiple Airlines
Wed 6/39:21 am
SDF
-
SFO
1 stop12h 49m
Multiple Airlines
Deal found 3/6$375
This Kiwi.com deal was found by Cheapflights users on 3/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/136:00 am
SFO
-
SDF
3 stops33h 15m
Multiple Airlines
Mon 5/189:31 am
SDF
-
SFO
Nonstop5h 02m
Multiple Airlines
Deal found 3/8$378

Find flight deals from San Francisco to Louisville

Discover tips and strategies to find the most affordable flight options for your journey from San Francisco (SFO) to Louisville (SDF). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated March 10, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$353
(Kiwi.com)

One-way from

$156
(Kiwi.com)

Popular in

January

Cheapest in

November

Average price

$512
Provider with most accurate pricing for San Francisco-Louisville Intl flight deals.
Search Deals
Provider most trusted by Cheapflights users for San Francisco-Louisville Intl flights.
Search Deals
From San Francisco to Louisville Intl
Search Deals
One-way flight from San Francisco to Louisville Intl
Search Deals
Highest demand for flights based on searches. 22% potential increase in price ($135 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($19 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in March 2026
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from San Francisco to Louisville that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated March 10, 2026.
Use the filters below to find and compare flights from San Francisco to Louisville that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

San FranciscoLouisville

SFO - SDF

SFOSDF

San Francisco

Mon 4/27

11:25 pm-9:50 am

1 stop7h 25m

Louisville Intl

Thu 4/30

5:25 pm-12:10 am

2 stops9h 45m

$384

San FranciscoLouisville

SFO - SDF

SFOSDF

San Francisco

Sat 4/18

5:40 am-5:45 pm

2 stops9h 05m

Louisville Intl

Mon 4/20

3:40 pm-11:05 pm

2 stops10h 25m

$389

San FranciscoLouisville

SFO - SDF

SFOSDF

San Francisco

Tue 4/21

6:20 am-3:50 pm

1 stop6h 30m

Louisville Intl

Fri 4/24

12:20 pm-6:35 pm

1 stop9h 15m

$398

San FranciscoLouisville

SFO - SDF

SFOSDF

San Francisco

Wed 6/10

11:40 pm-10:05 am

1 stop7h 25m

Louisville Intl

Sun 6/14

6:25 pm-12:10 am

2 stops8h 45m

$403

San FranciscoLouisville

SFO - SDF

SFOSDF

San Francisco

Sun 4/12

11:25 pm-9:55 am

1 stop7h 30m

Louisville Intl

Thu 4/16

4:45 pm-11:20 pm

1 stop9h 35m

$408

San FranciscoLouisville

SFO - SDF

SFOSDF

San Francisco

Thu 7/23

11:45 pm-9:51 am

1 stop7h 06m

Louisville Intl

Sun 7/26

7:30 pm-12:15 am

1 stop7h 45m

$437

San FranciscoLouisville

SFO - SDF

SFOSDF

San Francisco

Fri 4/24

7:25 am-9:00 pm

2 stops10h 35m

Louisville Intl

Fri 5/1

1:10 pm-8:00 pm

1 stop9h 50m

$442
Quickest round-trip

San FranciscoLouisville

SFO - SDF

SFOSDF

San Francisco

Tue 6/23

11:40 pm-10:05 am

1 stop7h 25m

Louisville Intl

Tue 6/30

10:55 am-3:00 pm

1 stop7h 05m

$447

San FranciscoLouisville

SFO - SDF

SFOSDF

San Francisco

Thu 7/23

8:55 pm-10:05 am

2 stops10h 10m

Louisville Intl

Sun 7/26

2:30 pm-12:10 am

1 stop12h 40m

$448

San FranciscoLouisville

SFO - SDF

SFOSDF

San Francisco

Mon 5/18

8:05 am-9:00 pm

2 stops9h 55m

Louisville Intl

Wed 5/20

8:55 am-3:20 pm

2 stops9h 25m

$467

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/9

Showing 1-10 of 22 resultsSorted by cheapest first
1
2
3

Compare providers for flights from San Francisco to Louisville

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from San Francisco to Louisville in March.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on San Francisco-Louisville flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on San Francisco-Louisville flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from San Francisco-Louisville flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on San Francisco-Louisville flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for San Francisco-Louisville flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from San Francisco to Louisville

Have a flexible travel schedule? Discover the best time to fly to Louisville from San Francisco 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 San Francisco to Louisville

How far ahead should I book a flight from San Francisco to Louisville?

Use this chart to determine the optimal time to book a round-trip flight from San Francisco to Louisville. Price data was last updated on March 6, 2026.

The price you pay for your flight from San Francisco to Louisville may vary depending on when you book. For the best chance of a lower fare, look to book 88 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

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

Currently, September is the cheapest month in which you can book a flight from San Francisco to Louisville (average of $112). Flying from San Francisco to Louisville in June is currently the most expensive (average of $243). 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.

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

Find hourly flight availability from San Francisco to Louisville. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated March 10, 2026.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from San Francisco to Louisville as you normally would.

Reviews of airlines servicing Louisville

Get insights into the airlines that provide service to Louisville. 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 Louisville. Reviews last updated March 10, 2026.
Peruse reviews from past customers who have flown with Breeze Airways,Southwest, andDelta from San Francisco to Louisville to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Breeze Airways
8.1
Very good
271 reviews

Overall

8.1

Entertainment

6.6

Comfort

8.2

Food

6.6

Boarding

8.3

Crew

8.7

Reviews

1 / 17
2.0
Mediocre

Justine,Jan 2026

RDU - MCO

1/10, I have never experienced the amount of delays, my flight was supposed to board at 8:34pm, we didn’t board until 3:35am from RDU. The staff got rude and very disrespectful when you asked what was going on it was like we didn’t board until something wrong or were pestering them for answers. I was 1 question 1 time, they were not communicating with us at all. So when our plane was now 6+ hrs delayed and nothing was being said to us .. yeah I think we have a right to ask a question. Everything took so long and was such a process; I have never experienced this before and I’m a frequent flyer, breeze makes spirit airlines look like a 100/10 airline.
Breeze Airways
8.1
Very good
271 reviews
Breeze Airways
8.1
Very good
271 reviews

Overall

8.1

Entertainment

6.6

Comfort

8.2

Food

6.6

Boarding

8.3

Crew

8.7

Reviews

1 / 17
2.0
Mediocre

Justine,Jan 2026

RDU - MCO

1/10, I have never experienced the amount of delays, my flight was supposed to board at 8:34pm, we didn’t board until 3:35am from RDU. The staff got rude and very disrespectful when you asked what was going on it was like we didn’t board until something wrong or were pestering them for answers. I was 1 question 1 time, they were not communicating with us at all. So when our plane was now 6+ hrs delayed and nothing was being said to us .. yeah I think we have a right to ask a question. Everything took so long and was such a process; I have never experienced this before and I’m a frequent flyer, breeze makes spirit airlines look like a 100/10 airline.
Southwest
8.0
Very good
4,317 reviews
Breeze Airways
8.1
Very good
271 reviews

Overall

8.1

Entertainment

6.6

Comfort

8.2

Food

6.6

Boarding

8.3

Crew

8.7

Reviews

1 / 17
2.0
Mediocre

Justine,Jan 2026

RDU - MCO

1/10, I have never experienced the amount of delays, my flight was supposed to board at 8:34pm, we didn’t board until 3:35am from RDU. The staff got rude and very disrespectful when you asked what was going on it was like we didn’t board until something wrong or were pestering them for answers. I was 1 question 1 time, they were not communicating with us at all. So when our plane was now 6+ hrs delayed and nothing was being said to us .. yeah I think we have a right to ask a question. Everything took so long and was such a process; I have never experienced this before and I’m a frequent flyer, breeze makes spirit airlines look like a 100/10 airline.
Delta
7.9
Good
8,276 reviews
Breeze Airways
8.1
Very good
271 reviews

Overall

8.1

Entertainment

6.6

Comfort

8.2

Food

6.6

Boarding

8.3

Crew

8.7

Reviews

1 / 17
2.0
Mediocre

Justine,Jan 2026

RDU - MCO

1/10, I have never experienced the amount of delays, my flight was supposed to board at 8:34pm, we didn’t board until 3:35am from RDU. The staff got rude and very disrespectful when you asked what was going on it was like we didn’t board until something wrong or were pestering them for answers. I was 1 question 1 time, they were not communicating with us at all. So when our plane was now 6+ hrs delayed and nothing was being said to us .. yeah I think we have a right to ask a question. Everything took so long and was such a process; I have never experienced this before and I’m a frequent flyer, breeze makes spirit airlines look like a 100/10 airline.
United Airlines
7.4
Good
9,409 reviews
Breeze Airways
8.1
Very good
271 reviews

Overall

8.1

Entertainment

6.6

Comfort

8.2

Food

6.6

Boarding

8.3

Crew

8.7

Reviews

1 / 17
2.0
Mediocre

Justine,Jan 2026

RDU - MCO

1/10, I have never experienced the amount of delays, my flight was supposed to board at 8:34pm, we didn’t board until 3:35am from RDU. The staff got rude and very disrespectful when you asked what was going on it was like we didn’t board until something wrong or were pestering them for answers. I was 1 question 1 time, they were not communicating with us at all. So when our plane was now 6+ hrs delayed and nothing was being said to us .. yeah I think we have a right to ask a question. Everything took so long and was such a process; I have never experienced this before and I’m a frequent flyer, breeze makes spirit airlines look like a 100/10 airline.
American Airlines
7.1
Good
11,415 reviews
Breeze Airways
8.1
Very good
271 reviews

Overall

8.1

Entertainment

6.6

Comfort

8.2

Food

6.6

Boarding

8.3

Crew

8.7

Reviews

1 / 17
2.0
Mediocre

Justine,Jan 2026

RDU - MCO

1/10, I have never experienced the amount of delays, my flight was supposed to board at 8:34pm, we didn’t board until 3:35am from RDU. The staff got rude and very disrespectful when you asked what was going on it was like we didn’t board until something wrong or were pestering them for answers. I was 1 question 1 time, they were not communicating with us at all. So when our plane was now 6+ hrs delayed and nothing was being said to us .. yeah I think we have a right to ask a question. Everything took so long and was such a process; I have never experienced this before and I’m a frequent flyer, breeze makes spirit airlines look like a 100/10 airline.

Related info for your journey

Find useful and relevant information for your journey from San Francisco to Louisville. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How popular is this San Francisco to Louisville flight route?

    This flight path from San Francisco to Louisville Intl was viewed by 1 users in the past month. Keep an eye out for changes in search interest prior to high and low season.

  • How long is the flight from San Francisco to Louisville?

    There are many flights that can get you from San Francisco to Louisville in 7h 25m. Fly via Southwest to get the fastest option. Airlines will cover a distance of 1984 mi.

  • What are the cheapest airlines flying from San Francisco to Louisville round-trip?

    Currently priced at $129, Breeze Airways will fly you from San Francisco to Louisville and back. In addition to Breeze Airways, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from Delta and Southwest - these airlines can fly you to your destination from $171 and $266, respectively. Users have found that Breeze Airways is 71% cheaper than the other options available to this destination.

  • What are the cheapest airlines to fly from San Francisco to Louisville one-way?

    The cheapest airlines for a one-way flight from San Francisco to Louisville are Breeze Airways ($99), United Airlines ($165), and American Airlines ($171).

  • Can I find deals for flights from San Francisco to Louisville that include hotel bookings?

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

  • How can I find direct flights from San Francisco to Louisville?

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

  • Can I find deals for business class flights from San Francisco to Louisville?

    Yes. Cheapflights offers flight deals from San Francisco to Louisville 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 San Francisco to Louisville?

    Currently, September is the cheapest month in which you can book a flight from San Francisco to Louisville (average of $112). Flying from San Francisco to Louisville in June is currently the most expensive (average of $243). 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

Traveling to a place near Louisville?

Book flights to Louisville if you plan to visit one of these locations
Shepherdsville
Jeffersonville
Elizabethtown
Corydon
Bardstown

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Alternative routes for San Francisco to Louisville

See prices for flight routes from nearby airports that may be better suited for you.
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Top 6 airlines flying from San Francisco to Louisville

Discover the top 6 airlines that operate flights from San Francisco to Louisville. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated March 10, 2026.
AirlineCheapestAverageFlexibilityOn-time
Breeze AirwaysCheapest$129Average$278FlexibilityNo cancel feeOn-timeN/A
DeltaCheapest$171Average$481FlexibilityNo cancel feeOn-timeN/A
SouthwestCheapest$266Average$455FlexibilityNo cancel feeOn-time63%
American AirlinesCheapest$294Average$452FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$303Average$560FlexibilityNo cancel feeOn-time69%
JetBlueCheapest$358Average$477FlexibilityNo cancel feeOn-time62%

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