HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
San Francisco

$374+ Cheap flights from Sofia (SOF) 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 2/25. Fares are subject to change and may not be available on all flights or dates of travel.
SOF — SFO
Feb 16 — Feb 231
Mon 2/16
Mon 2/23
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Sofia to San Francisco 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

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheap flight deals from Sofia to San Francisco

Discover tips and strategies to find the most affordable flight options for your journey from Sofia (SOF) to San Francisco (SFO). 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 January 17, 2026.

Most accurate provider

OneTravel
3 stars

Most trusted provider

OneTravel
3 stars

Round-trip from

$644
(Kiwi.com)

One-way from

$374
(Kiwi.com)

Popular in

August

Cheapest in

September

Average price

$941
Provider with most accurate pricing for Sofia-San Francisco flight deals.
Search Deals
Provider most trusted by Cheapflights users for Sofia-San Francisco flights.
Search Deals
From Sofia to San Francisco
Search Deals
One-way flight from Sofia to San Francisco
Search Deals
Highest demand for flights based on searches. 5% potential increase in price ($51 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($14 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in January 2026
Search Deals

Find flight deals from Sofia to San Francisco

Cheapest flights from Sofia to San Francisco
Explore the most affordable flight options available from Sofia to San Francisco. Find the lowest fares from popular airlines and budget airlines, with prices last updated on January 17, 2026.

This Kiwi.com deal was found by Cheapflights users on 1/15. 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.
Sat 3/217:15 pm
SOF
-
SFO
2 stops53h 20m
Multiple Airlines
Tue 4/219:05 pm
SFO
-
SOF
1 stop16h 05m
Multiple Airlines
Deal found 1/15$646
This Kiwi.com deal was found by Cheapflights users on 1/15. 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 3/204:50 pm
SOF
-
SFO
2 stops31h 55m
Multiple Airlines
Wed 4/229:05 pm
SFO
-
SOF
1 stop16h 05m
Multiple Airlines
Deal found 1/15$664
This Kiwi.com deal was found by Cheapflights users on 1/15. 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.
Sun 3/225:25 pm
SOF
-
SFO
2 stops31h 10m
Multiple Airlines
Sun 4/269:05 pm
SFO
-
SOF
1 stop16h 05m
Multiple Airlines
Deal found 1/15$665
This Kiwi.com deal was found by Cheapflights users on 1/15. 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 3/193:15 pm
SOF
-
SFO
2 stops34h 50m
Multiple Airlines
Mon 4/209:05 pm
SFO
-
SOF
1 stop16h 05m
Multiple Airlines
Deal found 1/15$668
This Kiwi.com deal was found by Cheapflights users on 1/15. 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.
Sun 3/224:45 pm
SOF
-
SFO
2 stops31h 50m
Multiple Airlines
Thu 4/237:40 pm
SFO
-
SOF
1 stop19h 50m
Multiple Airlines
Deal found 1/15$674
This Mytrip deal was found by Cheapflights users on 1/17. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 3/15:25 pm
SOF
-
SFO
2 stops31h 10m
Multiple Airlines
Sun 3/1510:40 pm
SFO
-
SOF
2 stops16h 15m
Multiple Airlines
Deal found 1/17$689
This Kiwi.com deal was found by Cheapflights users on 1/15. 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 3/204:45 pm
SOF
-
SFO
2 stops32h 00m
Multiple Airlines
Thu 4/237:40 pm
SFO
-
SOF
1 stop19h 50m
Multiple Airlines
Deal found 1/15$690
This Kiwi.com deal was found by Cheapflights users on 1/15. 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 3/194:45 pm
SOF
-
SFO
2 stops33h 20m
Multiple Airlines
Thu 4/237:40 pm
SFO
-
SOF
1 stop19h 50m
Multiple Airlines
Deal found 1/15$691
This Kiwi.com deal was found by Cheapflights users on 1/15. 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 3/204:50 pm
SOF
-
SFO
2 stops31h 55m
Multiple Airlines
Sat 4/259:05 pm
SFO
-
SOF
1 stop16h 05m
Multiple Airlines
Deal found 1/15$716
This Kiwi.com deal was found by Cheapflights users on 1/15. 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.
Sun 3/225:25 pm
SOF
-
SFO
2 stops31h 10m
Multiple Airlines
Sat 4/259:05 pm
SFO
-
SOF
1 stop16h 05m
Multiple Airlines
Deal found 1/15$717
This Kiwi.com deal was found by Cheapflights users on 1/15. 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 3/178:25 pm
SOF
-
SFO
1 stop33h 45m
Multiple Airlines
Tue 4/219:05 pm
SFO
-
SOF
1 stop16h 05m
Multiple Airlines
Deal found 1/15$738
This Kiwi.com deal was found by Cheapflights users on 1/15. 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 3/178:25 pm
SOF
-
SFO
1 stop33h 45m
Multiple Airlines
Sun 4/269:05 pm
SFO
-
SOF
1 stop16h 05m
Multiple Airlines
Deal found 1/15$739

Cheapflights Fare Finder

 
Customize your flight search to find flights from Sofia 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 January 17, 2026.
Use the filters below to find and compare flights from Sofia to San Francisco that are best for you.

Fly from

Sofia

Fly to

San Francisco

Route

Depart

Return

Price

SofiaSan Francisco

SOF - SFO

SOFSFO

Sofia

Fri 4/10

7:00 am-8:59 pm

2 stops23h 59m

San Francisco

Sat 4/25

8:10 pm-2:00 pm

1 stop31h 50m

$814

SofiaSan Francisco

SOF - SFO

SOFSFO

Sofia

Fri 4/10

7:00 am-8:59 pm

2 stops23h 59m

San Francisco

Sat 4/25

10:34 am-2:00 pm

2 stops17h 26m

$817

SofiaSan Francisco

SOF - SFO

SOFSFO

Sofia

Wed 3/18

7:00 am-10:38 pm

2 stops24h 38m

San Francisco

Fri 4/24

10:34 am-2:00 pm

2 stops17h 26m

$870

SofiaSan Francisco

SOF - SFO

SOFSFO

Sofia

Fri 4/10

6:20 am-3:25 pm

1 stop19h 05m

San Francisco

Sat 4/25

1:45 pm-11:10 pm

1 stop23h 25m

$918

SofiaSan Francisco

SOF - SFO

SOFSFO

Sofia

Fri 3/20

2:35 pm-9:10 pm

1 stop15h 35m

San Francisco

Wed 4/22

9:05 pm-11:10 pm

1 stop16h 05m

$920

SofiaSan Francisco

SOF - SFO

SOFSFO

Sofia

Fri 3/20

6:10 am-4:55 pm

1 stop19h 45m

San Francisco

Sun 4/26

1:45 pm-11:10 pm

1 stop23h 25m

$920

SofiaSan Francisco

SOF - SFO

SOFSFO

Sofia

Tue 3/17

6:00 am-1:40 pm

1 stop16h 40m

San Francisco

Fri 4/24

9:05 pm-11:10 pm

1 stop16h 05m

$920

SofiaSan Francisco

SOF - SFO

SOFSFO

Sofia

Wed 3/18

6:10 am-9:10 pm

1 stop24h 00m

San Francisco

Tue 4/21

1:45 pm-11:10 pm

1 stop23h 25m

$920

SofiaSan Francisco

SOF - SFO

SOFSFO

Sofia

Thu 3/19

6:00 am-9:10 pm

1 stop24h 10m

San Francisco

Sun 4/26

1:45 pm-11:10 pm

1 stop23h 25m

$920

SofiaSan Francisco

SOF - SFO

SOFSFO

Sofia

Sun 3/22

6:10 am-9:10 pm

1 stop24h 00m

San Francisco

Wed 4/22

1:45 pm-11:10 pm

1 stop23h 25m

$920

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/15

Showing 1-10 of 20 results
1
2

Compare providers for flights from Sofia to San Francisco

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 Sofia to San Francisco in January.
ProviderPrice AccuracyTrust Score*
FlightHubPrice Accuracy3 starsTrust Score*1 star
eDreamsPrice Accuracy3 starsTrust Score*3 stars
PricelinePrice Accuracy1 starTrust Score*3 stars
OneTravelPrice Accuracy3 starsTrust Score*3 stars
CheapOairPrice Accuracy3 starsTrust Score*3 stars
oojoPrice 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 Sofia-San Francisco flights, users find the pricing of OneTravel to be most consistent on Cheapflights vs. OneTravel Users can find the same prices on Sofia-San Francisco flight deals on Cheapflights vs. OneTravel >95% of the time. Price accuracy is based on data collected from Sofia-San Francisco flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Sofia-San Francisco flights, Cheapflights users trust OneTravel the most. OneTravel 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 Sofia-San Francisco 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 Sofia to San Francisco

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

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

Use this chart to determine the optimal time to book a round-trip flight from Sofia to San Francisco. Price data was last updated on January 16, 2026.

The best time to book flights from Sofia to San Francisco is 22 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.

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

Currently, October is the cheapest month in which you can book a flight from Sofia to San Francisco (average of $492). Flying from Sofia to San Francisco in August is currently the most expensive (average of $951). 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 San Francisco

Get insights into the airlines that provide service to San Francisco. 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 San Francisco. Reviews last updated January 17, 2026.
Read through reviews of airlines operating flights from Sofia to San Francisco, such as United Airlines, Turkish Airlines, and Lufthansa. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
9,174 reviews

Food

6.6

Boarding

7.7

Entertainment

7.1

Overall

7.4

Comfort

7.3

Crew

8.1

Reviews

1 / 20
10.0
Excellent

Anonymous,Sep 2025

FRA - SFO

Lufthansa was amazing, I wish United States based airlines operated like them.
United Airlines
7.4
Good
9,174 reviews
United Airlines
7.4
Good
9,174 reviews

Food

6.6

Boarding

7.7

Entertainment

7.1

Overall

7.4

Comfort

7.3

Crew

8.1

Reviews

1 / 20
10.0
Excellent

Anonymous,Sep 2025

FRA - SFO

Lufthansa was amazing, I wish United States based airlines operated like them.
Turkish Airlines
7.3
Good
4,189 reviews
United Airlines
7.4
Good
9,174 reviews

Food

6.6

Boarding

7.7

Entertainment

7.1

Overall

7.4

Comfort

7.3

Crew

8.1

Reviews

1 / 20
10.0
Excellent

Anonymous,Sep 2025

FRA - SFO

Lufthansa was amazing, I wish United States based airlines operated like them.
Lufthansa
6.8
Okay
7,728 reviews
United Airlines
7.4
Good
9,174 reviews

Food

6.6

Boarding

7.7

Entertainment

7.1

Overall

7.4

Comfort

7.3

Crew

8.1

Reviews

1 / 20
10.0
Excellent

Anonymous,Sep 2025

FRA - SFO

Lufthansa was amazing, I wish United States based airlines operated like them.

Related info for your journey

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

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

    For as low as $817, KLM can have you in San Francisco from Sofia in 23h 59m. The distance from Sofia to San Francisco is about 6481 mi.

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

    According to our current data, Lufthansa ($712), Turkish Airlines ($736), and United Airlines ($813) offers the cheapest pricing from Sofia to San Francisco. Users have found that Lufthansa is 23% cheaper than the other options available to this destination.

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

    To fly one-way, consider booking your trip with Turkish Airlines, which is currently one of the cheapest options available, starting at $743. Lufthansa flights start at $759 while deals on United Airlines start at $861 one-way.

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

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

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

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

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

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

    Currently, October is the cheapest month in which you can book a flight from Sofia to San Francisco (average of $492). Flying from Sofia to San Francisco in August is currently the most expensive (average of $951). 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
Roseville
South San Francisco
Santa Cruz
Santa Clara
Livermore
Watsonville
San Bruno
Daly City
Sunnyvale
Turlock
San Carlos
San Ramon
Manteca
Vallejo
San Lorenzo
Hollister
Redwood City
Union City
Elk Grove
Foster City

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Sofia to San Francisco

See prices for flight routes from nearby airports that may be better suited for you.
Sofia to Los Angeles flights
Sofia to Las Vegas flights
Sofia to Ontario flights
Sofia to Burbank flights
Sofia to Oakland flights
Sofia to San Jose flights
Sofia to Santa Ana flights

Top 3 airlines flying from Sofia to San Francisco

Discover the top 3 airlines that operate flights from Sofia 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 January 17, 2026.
AirlineCheapestAverageFlexibilityOn-time
LufthansaCheapest$712Average$880FlexibilityNo cancel feeOn-time76%
Turkish AirlinesCheapest$736Average$897FlexibilityNo cancel feeOn-time77%
United AirlinesCheapest$813Average$916FlexibilityNo cancel feeOn-time69%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.