San Francisco

$109+ Cheap flights from Kentucky to San Francisco (SFO)

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 8/17. Fares are subject to change and may not be available on all flights or dates of travel.
SDF — SFO
jul. 4 — jul. 111
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Cheap flight deals from Kentucky to San Francisco

Cheapest flights from Kentucky to San Francisco
Explore the most affordable flight options available from Kentucky to San Francisco. Find the lowest fares from popular airlines and budget airlines, with prices last updated on junio 4, 2026.

This United Airlines deal was found by Cheapflights users on 6/1. 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.
mié. 7/296:30 am
BNA
-
SFO
1 stop7h 05m
United Airlines
mar. 8/411:59 pm
SFO
-
BNA
Nonstop4h 38m
United Airlines
Deal found 6/1$247
This Southwest deal was found by Cheapflights users on 5/31. 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.
mar. 6/301:05 pm
BNA
-
SFO
Nonstop4h 40m
Southwest
mar. 7/78:25 am
SFO
-
BNA
2 stops8h 55m
Southwest
Deal found 5/31$252
This Super.com deal was found by Cheapflights users on 6/3. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 10/238:47 am
SDF
-
SFO
Nonstop5h 22m
Breeze Airways
vie. 10/3011:54 am
SFO
-
SDF
Nonstop4h 25m
Breeze Airways
Deal found 6/3$257
This Southwest deal was found by Cheapflights users on 5/31. 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.
vie. 7/35:20 pm
BNA
-
SFO
1 stop6h 15m
Southwest
mar. 7/75:15 am
SFO
-
BNA
1 stop9h 25m
Southwest
Deal found 5/31$257
This Kiwi.com deal was found by Cheapflights users on 6/3. 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.
vie. 10/238:47 am
SDF
-
SFO
Nonstop5h 22m
Breeze Airways
lun. 11/211:54 am
SFO
-
SDF
Nonstop4h 25m
Breeze Airways
Deal found 6/3$258
This United Airlines deal was found by Cheapflights users on 5/31. 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.
vie. 7/32:54 pm
BNA
-
SFO
Nonstop4h 48m
United Airlines
sáb. 7/1111:59 pm
SFO
-
BNA
Nonstop4h 38m
United Airlines
Deal found 5/31$264
This United Airlines deal was found by Cheapflights users on 6/1. 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.
mar. 6/162:54 pm
BNA
-
SFO
Nonstop4h 48m
United Airlines
lun. 6/2211:59 pm
SFO
-
BNA
Nonstop4h 38m
United Airlines
Deal found 6/1$270
This United Airlines deal was found by Cheapflights users on 6/1. 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.
vie. 7/242:54 pm
BNA
-
SFO
Nonstop4h 48m
United Airlines
vie. 7/3111:59 pm
SFO
-
BNA
Nonstop4h 38m
United Airlines
Deal found 6/1$271
This United Airlines deal was found by Cheapflights users on 6/1. 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.
mar. 6/305:30 pm
BNA
-
SFO
1 stop7h 26m
United Airlines
sáb. 7/411:59 pm
SFO
-
BNA
Nonstop4h 38m
United Airlines
Deal found 6/1$274
This United Airlines deal was found by Cheapflights users on 6/1. 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.
vie. 7/36:31 am
BNA
-
SFO
Nonstop4h 49m
United Airlines
mar. 7/711:59 pm
SFO
-
BNA
Nonstop4h 38m
United Airlines
Deal found 6/1$276
This Kiwi.com deal was found by Cheapflights users on 6/3. 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.
lun. 7/209:30 pm
CVG
-
SFO
1 stop20h 55m
Multiple Airlines
mié. 7/229:00 pm
SFO
-
CVG
1 stop15h 52m
Multiple Airlines
Deal found 6/3$276
This Delta deal was found by Cheapflights users on 5/31. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 8/126:50 am
SDF
-
SFO
1 stop9h 19m
Delta
mar. 8/186:06 am
SFO
-
SDF
1 stop6h 44m
Delta
Deal found 5/31$277

Find flight deals from Kentucky to San Francisco

Keep the following information in mind while searching for Kentucky to San Francisco flight deals. Data was last updated junio 4, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$247
(United Airlines)

One-way from

$109
(CheapOair)

Popular in

March

Cheapest in

September

Average price

$390

Good round-trip deal

$252 or less

Good one-way deal

$147 or less
Provider with most accurate pricing for Louisville Intl-San Francisco flight deals.
Provider most trusted by Cheapflights users for Louisville Intl-San Francisco flights.
From Kentucky to San Francisco
One-way flight from Kentucky to San Francisco
Highest demand for flights based on searches. 12% potential increase in price ($56 potential increase over avg. RT price).
Cheapest flight prices on average. 2% potential price decrease ($9 potential savings vs. average RT price).
Average for round-trip flights in June 2026
Price to beat on a round-trip flight from Kentucky to San Francisco.
Price to beat on a one-way flight from Kentucky to San Francisco.

Cheapflights Fare Finder

 
Customize your flight search to find flights from Kentucky to San Francisco 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 junio 4, 2026.
Use the filters below to find and compare flights from Kentucky to San Francisco that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

NashvilleSan Francisco

BNA - SFO

BNASFO

Nashville Intl

jue. 7/2

4:59 pm-7:47 pm

Nonstop4h 48m

San Francisco

lun. 7/6

11:59 pm-6:37 am

Nonstop4h 38m

$264

LouisvilleSan Francisco

SDF - SFO

SDFSFO

Louisville Intl

jue. 8/13

4:30 pm-11:47 pm

1 stop10h 17m

San Francisco

mié. 8/19

1:45 pm-12:24 am

1 stop7h 39m

$287

LouisvilleSan Francisco

SDF - SFO

SDFSFO

Louisville Intl

mié. 8/12

5:25 pm-9:47 pm

1 stop7h 22m

San Francisco

dom. 8/16

10:10 pm-8:46 am

1 stop7h 36m

$287

NashvilleSan Francisco

BNA - SFO

BNASFO

Nashville Intl

vie. 7/10

2:54 pm-5:42 pm

Nonstop4h 48m

San Francisco

lun. 7/13

11:30 pm-8:51 am

1 stop7h 21m

$292

LouisvilleSan Francisco

SDF - SFO

SDFSFO

Louisville Intl

mié. 8/12

2:34 pm-9:47 pm

1 stop10h 13m

San Francisco

mié. 8/19

10:45 am-11:56 pm

2 stops10h 11m

$325

BlountvilleSan Francisco

TRI - SFO

TRISFO

Blountville Tri Cities TN/VA

sáb. 10/10

12:49 pm-7:37 pm

1 stop9h 48m

San Francisco

sáb. 10/17

11:45 pm-9:35 am

1 stop6h 50m

$331
Quickest round-trip

NashvilleSan Francisco

BNA - SFO

BNASFO

Nashville Intl

mié. 9/9

8:15 am-11:07 am

Nonstop4h 52m

San Francisco

dom. 9/13

11:59 pm-6:30 am

Nonstop4h 31m

$337

LexingtonSan Francisco

LEX - SFO

LEXSFO

Lexington Blue Grass

mar. 8/25

6:30 am-11:30 am

1 stop8h 00m

San Francisco

sáb. 8/29

11:40 pm-12:55 pm

1 stop10h 15m

$341

NashvilleSan Francisco

BNA - SFO

BNASFO

Nashville Intl

vie. 8/28

12:37 pm-6:24 pm

1 stop7h 47m

San Francisco

mar. 9/1

8:30 am-3:07 pm

Nonstop4h 37m

$347

CincinnatiSan Francisco

CVG - SFO

CVGSFO

Cincinnati Cinci./N. Kentucky

mié. 8/19

2:23 pm-6:13 pm

1 stop6h 50m

San Francisco

mié. 8/26

6:00 am-3:00 pm

1 stop6h 00m

$347

Flights are sorted by cheapest round-trip flights first.

Deals found on 5/31

Showing 1-10 of 60 resultsSorted by cheapest first
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Best time to book a flight from Kentucky to San Francisco

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

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

Currently, September is the cheapest month in which you can book a flight from Kentucky to San Francisco (average of $102). Flying from Kentucky to San Francisco in February is currently the most expensive (average of $308). 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 KY to SFO?

Find hourly flight availability from Kentucky to San Francisco. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated junio 4, 2026.

When flying from Kentucky to San Francisco, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

How much does it cost to fly round-trip from Kentucky to San Francisco?

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

The best time to book flights from Kentucky to San Francisco is 31 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

Related info for your journey

Find useful and relevant information for your journey from Kentucky to San Francisco. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
  • What airport do you fly into for flights to San Francisco from Kentucky?

    Most people fly into San Francisco (SFO) if they book a flight to San Francisco from Kentucky. San Francisco is conveniently located just 11.0 mi from San Francisco’s city center.

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

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

    Airlines like United Airlines, Delta, and American Airlines fly from Kentucky to San Francisco in about 4h 48m. The time it takes to get you to your destination can typically vary by up to 5h 29m. Kentucky and San Francisco are separated by a distance of 1962 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

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

    $77 is the cheapest one-way deal found within the past few days, from Delta. You may also be able to find cheap deals on Breeze Airways and United Airlines, with prices starting from $108 and $121, respectively.

  • What are the most popular routes from Kentucky to San Francisco?

  • What are the cheapest flights from Kentucky to San Francisco?

    Looking for the cheapest flight from Kentucky to San Francisco? While on average our users pay $262, our data indicates the cheapest price to be $74. The most popular route (Nashville Intl - San Francisco), is priced around $257.

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

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

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

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

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

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

    Currently, September is the cheapest month in which you can book a flight from Kentucky to San Francisco (average of $102). Flying from Kentucky to San Francisco in February is currently the most expensive (average of $308). 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 San Francisco?

Book flights to San Francisco if you plan to visit one of these locations
South San Francisco
Santa Cruz
Santa Clara
Fairfield
Rancho Cordova
Cupertino
Emeryville
Newark
Watsonville
San Bruno
San Ramon
Vacaville
Roseville
San Carlos
Redwood City
Daly City
Turlock
Sunnyvale
Vallejo
San Lorenzo

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for Kentucky to San Francisco

See prices for flight routes from nearby airports that may be better suited for you.

Top 5 airlines flying from Kentucky to San Francisco

Discover the top 5 airlines that operate flights from Kentucky to San Francisco. 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 junio 4, 2026.
AirlineCheapestAverageFlexibilityOn-time
Breeze AirwaysCheapest$149Average$286FlexibilityNo cancel feeOn-timeN/A
DeltaCheapest$168Average$426FlexibilityNo cancel feeOn-timeN/A
SouthwestCheapest$254Average$477FlexibilityNo cancel feeOn-time63%
American AirlinesCheapest$262Average$439FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$265Average$535FlexibilityNo cancel feeOn-time69%

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