What is the cheapest airline that flies from Kentucky to San Francisco?

Frontier, Delta, and United Airlines are the most popular carriers operating from Kentucky to San Francisco

How many flights depart from Kentucky to San Francisco on average per week?

The number of flights available between Kentucky and San Francisco is 39 per week as of March 2026. The most frequent departure day is Tue, with 21% of weekly flights leaving on this day.

How long does it take to fly to San Francisco?

Flight times from Kentucky to San Francisco vary, but if you’re flying out of Louisville and flying into San Francisco (one of the most popular routes), then the duration is 5h 02m on average. Another popular route from Kentucky to San Francisco is flying from Lexington to San Francisco, which will take roughly 7h 05m. Keep in mind that layovers or delays could extend your travel time.

What airlines fly to San Francisco?

American Airlines, Breeze Airways and Delta are the top three most popular airlines that fly to San Francisco from Kentucky according to our data. American Airlines is the first choice among our users, with 32% of people opting to fly with this airline when traveling to San Francisco. Keep in mind that there are 5 different airlines that fly to San Francisco on a routine basis, so you have a few additional options to choose from.

When did momondo last update prices for flights from Kentucky to San Francisco Airport?

Prices for flights from Kentucky to San Francisco Airport refresh daily.

How many operators does momondo search for flights from Kentucky to San Francisco Airport?

There are 6 operators available for flights from Kentucky to San Francisco Airport as of March 2026.

How old do you have to be to fly from Kentucky to San Francisco Airport?

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 Kentucky to San Francisco Airport.

What documentation or ID do you need to fly to San Francisco Airport?

The travel and health documents required for your trip to San Francisco Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at San Francisco Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

$79 Cheap Flights from Kentucky to San Francisco in 2026

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Find the cheapest flights from Kentucky to San Francisco

Round-trip

One-way

Last minute

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Cheap round-trip flights

Enter your travel dates to find the best prices.

4:28 pm - 12:27 am

TYS

SFO

10h 59m

1 stop

6:00 am - 3:33 pm

SFO

TYS

6h 33m

1 stop

$185Frontier

gio, apr 30 - dom, mag 3

8:32 pm - 8:01 am

TYS

SFO

14h 29m

1 stop

6:00 am - 7:33 pm

SFO

TYS

10h 33m

1 stop

$241Frontier

ven, mag 22 - mer, mag 27

8:00 am - 5:51 pm

TYS

SFO

12h 51m

1 stop

11:59 pm - 8:50 pm

SFO

TYS

41h 51m

2 stops

$253Multiple Airlines

gio, apr 30 - mar, mag 5

9:31 am - 11:33 am

SDF

SFO

5h 02mnonstop

12:18 pm - 7:48 pm

SFO

SDF

4h 30mnonstop

$258Breeze Airways

lun, ago 31 - ven, set 4

10:19 pm - 7:58 am

LEX

SFO

12h 39m

1 stop

6:41 pm - 8:55 pm

SFO

LEX

23h 14m

2 stops

$268Multiple Airlines

gio, apr 23 - gio, apr 30

9:31 am - 11:33 am

SDF

SFO

5h 02mnonstop

12:18 pm - 7:48 pm

SFO

SDF

4h 30mnonstop

$278Breeze Airways

ven, ago 7 - ven, ago 14

7:05 am - 12:18 pm

TYS

SFO

8h 13m

1 stop

5:00 am - 3:07 pm

SFO

TYS

7h 07m

1 stop

$278United Airlines

mar, apr 28 - sab, mag 2

3:16 pm - 8:24 pm

SDF

SFO

8h 08m

1 stop

12:30 pm - 11:52 pm

SFO

SDF

8h 22m

1 stop

$293Delta

mer, mag 6 - mer, mag 13

7:40 am - 1:29 pm

BNA

SFO

7h 49m

1 stop

11:59 pm - 6:37 am

SFO

BNA

4h 38mnonstop

$307United Airlines

sab, mag 30 - mar, giu 2

10:22 am - 4:57 pm

LEX

SFO

9h 35m

1 stop

5:50 am - 5:12 pm

SFO

LEX

8h 22m

1 stop

$335Delta

sab, mag 2 - mar, mag 12

Delta flights from Kentucky to San Francisco

Our best Delta deals on Kentucky to San Francisco flight tickets

Delta

May 6

SDF3:16 pmLouisville Intl

8h 08m

1 stop

SFO8:24 pmSan Francisco

May 13

SFO12:30 pmSan Francisco

8h 22m

1 stop

SDF11:52 pmLouisville Intl

$293

Delta

Apr 25

TYS6:15 amKnoxville McGhee Tyson

8h 10m

1 stop

SFO11:25 amSan Francisco

May 5

SFO5:50 amSan Francisco

7h 52m

1 stop

TYS4:42 pmKnoxville McGhee Tyson

$306

Delta

May 6

SDF3:16 pmLouisville Intl

8h 08m

1 stop

SFO8:24 pmSan Francisco

May 14

SFO11:59 pmSan Francisco

7h 00m

1 stop

SDF9:59 amLouisville Intl

$324

Southwest flights from Kentucky to San Francisco

Our best Southwest deals on Kentucky to San Francisco flight tickets

Southwest

May 5

SDF3:30 pmLouisville Intl

9h 35m

2 stops

SFO10:05 pmSan Francisco

May 12

SFO11:25 pmSan Francisco

7h 25m

1 stop

SDF9:50 amLouisville Intl

$298

Southwest

May 5

SDF4:40 pmLouisville Intl

9h 35m

2 stops

SFO11:15 pmSan Francisco

May 12

SFO7:40 pmSan Francisco

11h 10m

2 stops

SDF9:50 amLouisville Intl

$303

Southwest

Apr 22

BNA6:25 amNashville Intl

6h 35m

1 stop

SFO11:00 amSan Francisco

Apr 25

SFO5:40 amSan Francisco

7h 55m

2 stops

BNA3:35 pmNashville Intl

$325

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

KnoxvilleSan Francisco

TYS - SFO

TYSSFO

Knoxville McGhee Tyson

gio 4/30

4:28 pm-12:27 am

1 stop10h 59m

San Francisco

dom 5/3

6:00 am-3:33 pm

1 stop6h 33m

$185

KnoxvilleSan Francisco

TYS - SFO

TYSSFO

Knoxville McGhee Tyson

ven 5/22

8:32 pm-8:01 am

1 stop14h 29m

San Francisco

mer 5/27

6:00 am-7:33 pm

1 stop10h 33m

$241

KnoxvilleSan Francisco

TYS - SFO

TYSSFO

Knoxville McGhee Tyson

gio 4/30

8:00 am-5:51 pm

1 stop12h 51m

San Francisco

mar 5/5

11:59 pm-8:50 pm

2 stops41h 51m

$253

Quickest round-trip

LouisvilleSan Francisco

SDF - SFO

SDFSFO

Louisville Intl

lun 8/31

9:31 am-11:33 am

Nonstop5h 02m

San Francisco

ven 9/4

12:18 pm-7:48 pm

Nonstop4h 30m

$258

LexingtonSan Francisco

LEX - SFO

LEXSFO

Lexington Blue Grass

gio 4/23

10:19 pm-7:58 am

1 stop12h 39m

San Francisco

gio 4/30

6:41 pm-8:55 pm

2 stops23h 14m

$268

LouisvilleSan Francisco

SDF - SFO

SDFSFO

Louisville Intl

ven 8/7

9:31 am-11:33 am

Nonstop5h 02m

San Francisco

ven 8/14

12:18 pm-7:48 pm

Nonstop4h 30m

$278

KnoxvilleSan Francisco

TYS - SFO

TYSSFO

Knoxville McGhee Tyson

mar 4/28

7:05 am-12:18 pm

1 stop8h 13m

San Francisco

sab 5/2

5:00 am-3:07 pm

1 stop7h 07m

$278

LouisvilleSan Francisco

SDF - SFO

SDFSFO

Louisville Intl

mer 5/6

3:16 pm-8:24 pm

1 stop8h 08m

San Francisco

mer 5/13

12:30 pm-11:52 pm

1 stop8h 22m

$293

NashvilleSan Francisco

BNA - SFO

BNASFO

Nashville Intl

sab 5/30

7:40 am-1:29 pm

1 stop7h 49m

San Francisco

mar 6/2

11:59 pm-6:37 am

Nonstop4h 38m

$307

LexingtonSan Francisco

LEX - SFO

LEXSFO

Lexington Blue Grass

sab 5/2

10:22 am-4:57 pm

1 stop9h 35m

San Francisco

mar 5/12

5:50 am-5:12 pm

1 stop8h 22m

$335

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 Kentucky to San Francisco

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

Other information

What is the cheapest month to fly to San Francisco?

If you aren’t able to travel to San Francisco during the month of September, then flying in November is also cheap. Prices for this month can be found on momondo for an average of $287.

What is the cheapest day to depart on your flight to San Francisco?

The cheapest day to depart from Kentucky to San Francisco is on a Tuesday when prices can be found for as low as $249. The most expensive day to fly to San Francisco is Thursday, with ticket prices averaging around $312.

What is the cheapest Kentucky to San Francisco flight route?

Fly from Louisville Intl to San Francisco for the best Kentucky - San Francisco flight prices

How far in advance should I book a flight to San Francisco?

You are more likely to see cheaper flights to San Francisco from Kentucky when booking weeks ahead of your departure date. In general, you can expect to find flights to San Francisco for around $379 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to San Francisco from Kentucky for as low as $246 on momondo.

What cabin class options are available on Kentucky to San Francisco flights?

There is only 1 cabin class available to choose from on Kentucky to San Francisco flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on Kentucky to San Francisco flights?

You could potentially save up to 8% on your flight if you consider stops on a Kentucky to San Francisco flight.

Cheap Kentucky to San Francisco flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Kentucky to San Francisco

Best Price Found	$248
Fastest flight time	4h 35m
Direct flights	Every day
Airports in San Francisco	1 airport

The best flight deal from Kentucky to San Francisco found on momondo in the last 72 hours is $248

The fastest flight from Kentucky to San Francisco takes 4h 35m

Direct flights go from Kentucky to San Francisco every day.

There is 1 airport in San Francisco. From Kentucky there are direct flights to San Francisco (SFO).

Search flight deals

When did momondo last update prices for flights from Kentucky to San Francisco Airport?
Prices for flights from Kentucky to San Francisco Airport refresh daily.
How many operators does momondo search for flights from Kentucky to San Francisco Airport?
There are 6 operators available for flights from Kentucky to San Francisco Airport as of March 2026.
How old do you have to be to fly from Kentucky to San Francisco Airport?
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 Kentucky to San Francisco Airport.
What documentation or ID do you need to fly to San Francisco Airport?
The travel and health documents required for your trip to San Francisco Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at San Francisco Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.
What is the most popular plane model from Kentucky to San Francisco?
Based on momondo bookings for this flight route, the most popular plane model on flight routes from Kentucky to San Francisco is Airbus A220-300 (94.34% of total bookings). The next most popular plane models are Boeing 737 MAX 8 (1.89%), Boeing 737 MAX 9 (1.89%), and Airbus A320-100/200 (1.89%).

Best airlines flying from Kentucky to San Francisco

Compare and see reviews for airlines that fly from Kentucky to San Francisco with momondo

Airline	Rating	Free Cancellation	Price
Breeze Airways	PriceFrom $139	Free Cancellation	Rating 8.1 275 reviews	Search Breeze Airways flights
Delta	PriceFrom $142	Free Cancellation	Rating 7.9 8,364 reviews	Search Delta flights
Southwest	PriceFrom $254	Free Cancellation	Rating 8.0 4,332 reviews	Search Southwest flights
American Airlines	PriceFrom $262	Free Cancellation	Rating 7.1 11,543 reviews	Search American Airlines flights
United Airlines	PriceFrom $283	Free Cancellation	Rating 7.4 9,525 reviews	Search United Airlines flights

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Modesto

Sonoma

Bodega Bay

Walnut Creek

Roseville

Hayward

Berkeley

Santa Clara

Big Sur

Fremont

Vallejo

Calistoga

Salinas

Daly City

Half Moon Bay

Milpitas

South San Francisco

Pacific Grove

Why use momondo?

Why should I use momondo to find a flight deal from Kentucky to San Francisco?

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to San Francisco from Kentucky.

Can I find flights from Kentucky to San Francisco with flexible booking policies on momondo?

momondo does allow users to show only those flights to San Francisco from Kentucky which offer a flexible booking policy as well as other useful filters and features.

How can momondo help me find flights from Kentucky to San Francisco?

momondo provides multiple filters to help you find the best flight to San Francisco from Kentucky. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

I’m not ready to book a flight from Kentucky to San Francisco right now. Can momondo alert me if prices change?

Yes. momondo can track prices for Kentucky to San Francisco flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.

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Cheap flights from Kentucky to San Francisco from $79

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Kentucky to San Francisco departing on 4/20. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

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How to get the cheapest flight ticket from Kentucky to San Francisco

What is the cheapest month to fly to San Francisco?

What is the cheapest day to depart on your flight to San Francisco?

What is the cheapest Kentucky to San Francisco flight route?

How far in advance should I book a flight to San Francisco?

What cabin class options are available on Kentucky to San Francisco flights?

Can stopping save me money on Kentucky to San Francisco flights?

What is the cheapest airline that flies from Kentucky to San Francisco?

What airlines fly to San Francisco?

How many flights depart from Kentucky to San Francisco on average per week?

How long does it take to fly to San Francisco?

Cheap Kentucky to San Francisco flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Kentucky to San Francisco

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Best airlines flying from Kentucky to San Francisco

Compare and see reviews for airlines that fly from Kentucky to San Francisco with momondo

Traveling to a place near San Francisco?

Why use momondo?

An easier way to manage your San Francisco trip

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List of cabin classes available on flights landing in San Francisco. Availability may vary depending on flight origin and airline.

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