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$259+ Cheap flights from San Francisco (SFO) to Sofia (SOF)

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 7/15. Fares are subject to change and may not be available on all flights or dates of travel.
SFO — SOF
Feb 26 — Mar 51
Thu 2/26
Thu 3/5
1 adult, Economy
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Cheap flight deals from San Francisco to Sofia

Cheapest flights from San Francisco to Sofia
Explore the most affordable flight options available from San Francisco to Sofia. Find the lowest fares from popular airlines and budget airlines, with prices last updated on January 27, 2026.

This Mytrip deal was found by Cheapflights users on 1/24. 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.
Tue 11/1011:35 am
SFO
-
SOF
2 stops20h 45m
Multiple Airlines
Fri 11/206:10 am
SOF
-
SFO
2 stops23h 04m
Multiple Airlines
Deal found 1/24$502
This Mytrip deal was found by Cheapflights users on 1/26. 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.
Wed 4/299:05 pm
SFO
-
SOF
1 stop16h 05m
Multiple Airlines
Wed 5/136:20 am
SOF
-
SFO
2 stops19h 02m
Multiple Airlines
Deal found 1/26$505
This Mytrip deal was found by Cheapflights users on 1/27. 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.
Tue 4/288:30 am
SFO
-
SOF
2 stops17h 40m
Multiple Airlines
Tue 5/126:10 am
SOF
-
SFO
2 stops19h 12m
Multiple Airlines
Deal found 1/27$510
This CrystalTravel deal was found by Cheapflights users on 1/27. 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 CrystalTravel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/289:05 pm
SFO
-
SOF
1 stop16h 05m
Lufthansa
Tue 5/126:10 am
SOF
-
SFO
1 stop16h 30m
Lufthansa
Deal found 1/27$515
This FlightHub deal was found by Cheapflights users on 1/26. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/299:05 pm
SFO
-
SOF
1 stop16h 05m
Lufthansa
Wed 5/136:20 am
SOF
-
SFO
1 stop16h 20m
Lufthansa
Deal found 1/26$517
This FlightHub deal was found by Cheapflights users on 1/26. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/279:05 pm
SFO
-
SOF
1 stop16h 05m
Lufthansa
Mon 5/117:25 pm
SOF
-
SFO
1 stop33h 35m
Lufthansa
Deal found 1/26$529
This oojo deal was found by Cheapflights users on 1/26. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/273:52 pm
SFO
-
SOF
2 stops42h 38m
British Airways
Mon 5/118:10 pm
SOF
-
SFO
2 stops35h 54m
British Airways
Deal found 1/26$534
This Justfly.com deal was found by Cheapflights users on 1/25. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/299:05 pm
SFO
-
SOF
1 stop16h 05m
Multiple Airlines
Tue 10/61:05 pm
SOF
-
SFO
1 stop37h 10m
Multiple Airlines
Deal found 1/25$536

Find flight deals from San Francisco to Sofia

Discover tips and strategies to find the most affordable flight options for your journey from San Francisco (SFO) to Sofia (SOF). 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 27, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$505
(Mytrip)

One-way from

$259
(Air France)

Popular in

June

Cheapest in

October

Average price

$662
Provider with most accurate pricing for San Francisco-Sofia flight deals.
Search Deals
Provider most trusted by Cheapflights users for San Francisco-Sofia flights.
Search Deals
From San Francisco to Sofia
Search Deals
One-way flight from San Francisco to Sofia
Search Deals
Highest demand for flights based on searches. 30% potential increase in price ($348 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 8% potential price decrease ($60 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in January 2026
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from San Francisco to Sofia 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 27, 2026.
Use the filters below to find and compare flights from San Francisco to Sofia that are best for you.

Fly from

San Francisco

Fly to

Sofia

Route

Depart

Return

Price

San FranciscoSofia

SFO - SOF

SFOSOF

San Francisco

Wed 4/29

9:05 pm-11:10 pm

1 stop16h 05m

Sofia

Tue 10/6

6:10 am-5:07 pm

2 stops20h 57m

$555

San FranciscoSofia

SFO - SOF

SFOSOF

San Francisco

Mon 5/18

9:05 pm-11:10 pm

1 stop16h 05m

Sofia

Fri 5/29

6:20 am-12:40 pm

1 stop16h 20m

$562

San FranciscoSofia

SFO - SOF

SFOSOF

San Francisco

Sun 5/17

9:05 pm-11:10 pm

1 stop16h 05m

Sofia

Tue 5/26

2:10 pm-7:50 pm

1 stop15h 40m

$562

San FranciscoSofia

SFO - SOF

SFOSOF

San Francisco

Mon 5/18

9:05 pm-11:10 pm

1 stop16h 05m

Sofia

Thu 5/28

6:30 am-3:22 pm

2 stops18h 52m

$562

San FranciscoSofia

SFO - SOF

SFOSOF

San Francisco

Sun 5/17

9:05 pm-11:10 pm

1 stop16h 05m

Sofia

Thu 5/28

6:30 am-3:22 pm

2 stops18h 52m

$562

San FranciscoSofia

SFO - SOF

SFOSOF

San Francisco

Sun 4/26

8:30 am-12:10 pm

2 stops17h 40m

Sofia

Sun 5/10

6:20 am-12:40 pm

1 stop16h 20m

$566

San FranciscoSofia

SFO - SOF

SFOSOF

San Francisco

Mon 5/18

9:05 pm-11:10 pm

1 stop16h 05m

Sofia

Tue 5/26

2:10 pm-10:50 am

2 stops30h 40m

$570

San FranciscoSofia

SFO - SOF

SFOSOF

San Francisco

Thu 2/26

2:40 pm-6:00 pm

1 stop17h 20m

Sofia

Thu 3/12

6:00 am-1:40 pm

1 stop16h 40m

$575

San FranciscoSofia

SFO - SOF

SFOSOF

San Francisco

Wed 3/18

4:35 pm-10:45 pm

2 stops21h 10m

Sofia

Wed 4/1

1:50 pm-8:00 pm

1 stop16h 10m

$592

San FranciscoSofia

SFO - SOF

SFOSOF

San Francisco

Sun 4/12

7:35 pm-12:15 pm

1 stop30h 40m

Sofia

Mon 4/20

3:45 pm-7:45 pm

2 stops38h 00m

$602

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/27

Showing 1-10 of 21 results
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Compare providers for flights from San Francisco to Sofia

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 Sofia in January.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
AranGrantPrice Accuracy2 starsTrust Score*2 stars
JustAirTicketPrice Accuracy-Trust Score*1 star
OvagoPrice Accuracy2 starsTrust Score*3 stars
CheapfaremartPrice Accuracy-Trust Score*1 star

*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-Sofia flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on San Francisco-Sofia flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from San Francisco-Sofia flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on San Francisco-Sofia 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-Sofia 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 Sofia

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

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

Use this chart to determine the optimal time to book a round-trip flight from San Francisco to Sofia. Price data was last updated on January 23, 2026.

To ensure you get the cheapest price possible for a flight from San Francisco to Sofia, you should look to book at least 47 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

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

Currently, August is the cheapest month in which you can book a flight from San Francisco to Sofia (average of $439). Flying from San Francisco to Sofia in June is currently the most expensive (average of $814). 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.

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

Reviews of airlines servicing Sofia

Get insights into the airlines that provide service to Sofia. 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 Sofia. Reviews last updated January 27, 2026.
Read through reviews of airlines operating flights from San Francisco to Sofia, 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
9,206 reviews

Boarding

7.7

Comfort

7.3

Overall

7.4

Food

6.6

Crew

8.1

Entertainment

7.1

Reviews

1 / 20
4.0
Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??
United Airlines
7.4
Good
9,206 reviews
United Airlines
7.4
Good
9,206 reviews

Boarding

7.7

Comfort

7.3

Overall

7.4

Food

6.6

Crew

8.1

Entertainment

7.1

Reviews

1 / 20
4.0
Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??
Turkish Airlines
7.3
Good
4,209 reviews
United Airlines
7.4
Good
9,206 reviews

Boarding

7.7

Comfort

7.3

Overall

7.4

Food

6.6

Crew

8.1

Entertainment

7.1

Reviews

1 / 20
4.0
Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??
Lufthansa
6.8
Okay
7,749 reviews
United Airlines
7.4
Good
9,206 reviews

Boarding

7.7

Comfort

7.3

Overall

7.4

Food

6.6

Crew

8.1

Entertainment

7.1

Reviews

1 / 20
4.0
Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??
ITA Airways
6.7
Okay
1,131 reviews
United Airlines
7.4
Good
9,206 reviews

Boarding

7.7

Comfort

7.3

Overall

7.4

Food

6.6

Crew

8.1

Entertainment

7.1

Reviews

1 / 20
4.0
Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??
British Airways
6.7
Okay
7,704 reviews
United Airlines
7.4
Good
9,206 reviews

Boarding

7.7

Comfort

7.3

Overall

7.4

Food

6.6

Crew

8.1

Entertainment

7.1

Reviews

1 / 20
4.0
Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??

Related info for your journey

Find useful and relevant information for your journey from San Francisco to Sofia. 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 San Francisco to Sofia?

    Airlines like United Airlines and Lufthansa fly from San Francisco to Sofia in about 16h 05m. The time it takes to get you to your destination can typically vary by up to . San Francisco and Sofia are separated by a distance of 6481 mi.

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

    Cheapflights users have booked flights from San Francisco to Sofia round-trip from $542. Other airlines that can offer you cheap pricing are Lufthansa, from $563, and British Airways, from $594. Users have found that Turkish Airlines is 32% cheaper than the other options available to this destination.

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

    One-way options have recently been found by users for as low as $262 on KLM. Other airlines that offer cheap prices include Lufthansa from $339 and United Airlines from $464 one-way.

  • Where are the most common layover locations when flying from San Francisco to Sofia?

    San Francisco to Sofia flights have a layover in Istanbul most often.

  • What are some popular things to do or see while on a layover in Istanbul?

    Istanbul travelers tend to visit Taksim Square, Laleli Camii, and Beyazit Meydani more than anywhere else. Taksim Square, Laleli Camii, and Beyazit Meydani can be visited by traveling about 20.8 mi, 21.5 mi, and 21.7 mi respectively from Istanbul. Those on a layover in Istanbul in need of a rental car can book one at Istanbul for about $37.

  • Where are the least popular layover locations for San Francisco to Sofia flights?

    Of the flights from San Francisco to Sofia that have layovers, the fewest flights stop in Munich.

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

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

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

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

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

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

    Currently, August is the cheapest month in which you can book a flight from San Francisco to Sofia (average of $439). Flying from San Francisco to Sofia in June is currently the most expensive (average of $814). 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

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.

Top 6 airlines flying from San Francisco to Sofia

Discover the top 6 airlines that operate flights from San Francisco to Sofia. 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 27, 2026.
AirlineCheapestAverageFlexibilityOn-time
Turkish AirlinesCheapest$542Average$689FlexibilityNo cancel feeOn-time77%
LufthansaCheapest$563Average$862FlexibilityNo cancel feeOn-time76%
British AirwaysCheapest$594Average$770FlexibilityNo cancel feeOn-time70%
United AirlinesCheapest$614Average$920FlexibilityNo cancel feeOn-time69%
ITA AirwaysCheapest$651Average$1,084FlexibilityNo cancel feeOn-time81%
Air CanadaCheapest$771Average$1,133FlexibilityNo cancel feeOn-time67%

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