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$365+ 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 5/5. Fares are subject to change and may not be available on all flights or dates of travel.
SFO — SOF
Jan 11 — Jan 181
Sun 1/11
Sun 1/18
1 adult, Economy
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Cheapflights Tip: The best prices from San Francisco to Sofia are usually found in January or October, booked 47 days in advance, depart on a Thursday or Sunday and return on a Saturday

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 December 12, 2025.

This FlightHub deal was found by Cheapflights users on 12/10. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/1012:50 pmSFO - SOF
2 stops23h 55mLufthansa
Wed 12/172:00 pmSOF - SFO
2 stops37h 00mLufthansa
Deal found 12/10$652
This United Airlines deal was found by Cheapflights users on 12/11. 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.
Wed 12/1711:00 amSFO - SOF
2 stops25h 45mUnited Airlines
Thu 2/56:00 amSOF - SFO
1 stop19h 55mUnited Airlines
Deal found 12/11$1,327
This oojo deal was found by Cheapflights users on 12/11. 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.
Wed 12/176:50 pmSFO - SOF
1 stop27h 55mTurkish Airlines
Thu 2/59:35 amSOF - SFO
1 stop17h 10mTurkish Airlines
Deal found 12/11$1,806
This Gurufare deal was found by Cheapflights users on 12/10. 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 Gurufare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/193:15 pmSFO - SOF
2 stops17h 00mLufthansa
Thu 12/252:00 pmSOF - SFO
1 stop15h 35mLufthansa
Deal found 12/10$1,947
This deal was found by Cheapflights users on 12/11. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/235:30 pmSFO - SOF
1 stop16h 40mBritish Airways
Sat 12/2712:05 pmSOF - SFO
1 stop16h 40mBritish Airways
Deal found 12/11$2,044
This Mytrip deal was found by Cheapflights users on 12/10. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/198:25 amSFO - SOF
3 stops24h 50mMultiple Airlines
Thu 12/254:45 pmSOF - SFO
2 stops33h 20mMultiple Airlines
Deal found 12/10$2,415

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 December 12, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$572
(Kiwi.com)

One-way from

$365
(AirNGo)

Popular in

June

Cheapest in

January

Average price

$1,146
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 ($354 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 8% potential price decrease ($64 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
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 December 12, 2025.
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

Thu 2/5

9:25 pm-10:45 pm

1 stop15h 20m

Sofia

Thu 2/19

6:00 am-12:40 pm

1 stop16h 40m

$575

San FranciscoSofia

SFO - SOF

SFOSOF

San Francisco

Sun 3/1

1:10 pm-8:50 pm

1 stop21h 40m

Sofia

Mon 3/9

9:35 am-5:45 pm

1 stop17h 10m

$587

San FranciscoSofia

SFO - SOF

SFOSOF

San Francisco

Sun 3/15

7:50 pm-8:50 pm

1 stop16h 00m

Sofia

Sun 3/22

4:00 pm-5:45 pm

1 stop34h 45m

$587

San FranciscoSofia

SFO - SOF

SFOSOF

San Francisco

Thu 1/1

9:40 pm-10:45 pm

1 stop15h 05m

Sofia

Thu 1/15

2:00 pm-7:35 pm

1 stop15h 35m

$593

San FranciscoSofia

SFO - SOF

SFOSOF

San Francisco

Sun 1/11

2:40 pm-10:45 pm

1 stop22h 05m

Sofia

Sun 1/25

2:00 pm-7:35 pm

1 stop15h 35m

$597

San FranciscoSofia

SFO - SOF

SFOSOF

San Francisco

Thu 1/1

9:40 pm-10:45 pm

1 stop15h 05m

Sofia

Thu 1/15

2:35 pm-10:54 am

2 stops30h 19m

$606

San FranciscoSofia

SFO - SOF

SFOSOF

San Francisco

Sun 3/1

6:00 am-4:20 pm

2 stops24h 20m

Sofia

Mon 3/9

5:25 pm-4:00 pm

1 stop31h 35m

$616

San FranciscoSofia

SFO - SOF

SFOSOF

San Francisco

Thu 1/29

1:30 pm-10:45 pm

1 stop23h 15m

Sofia

Mon 2/2

2:20 pm-8:10 pm

1 stop15h 50m

$618

San FranciscoSofia

SFO - SOF

SFOSOF

San Francisco

Mon 5/18

5:45 pm-11:00 pm

1 stop19h 15m

$371

San FranciscoSofia

SFO - SOF

SFOSOF

San Francisco

Tue 5/19

5:45 pm-7:20 pm

1 stop39h 35m

$380

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/10

Showing 1-10 of 14 results
1
2

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 December.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star
eDreamsPrice Accuracy3 starsTrust Score*3 stars
AranGrantPrice Accuracy2 starsTrust Score*3 stars
JustAirTicketPrice Accuracy-Trust Score*1 star
OvagoPrice Accuracy2 starsTrust Score*2 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 eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on San Francisco-Sofia flight deals on Cheapflights vs. eDreams >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 eDreams the most. eDreams 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 December 5, 2025.

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 $821). 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 SOF?

Find hourly flight availability from San Francisco to Sofia. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated December 12, 2025.

A simple way to save on the total cost of your ticket is to fly from San Francisco to Sofia in the afternoon. If you’re flexible enough to do this you can expect to save up to 40% on your trip compared to booking a flight in the morning.

What is the cheapest day to fly from San Francisco to Sofia?

Use this chart to determine the cheapest time to fly round-trip from San Francisco to Sofia. Price data was last updated on December 16, 2024.

Travelers seeking maximum savings on their San Francisco to Sofia flight should consider departing on Thursday mornings when fares are most often at their lowest. Saturday mornings flights should be avoided if possible as fares are typically the most expensive at this time.

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 December 12, 2025.
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
9,095 reviews

Crew

8.1

Food

6.6

Comfort

7.3

Entertainment

7.1

Boarding

7.7

Overall

7.4

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
9,095 reviews
United Airlines
7.4
Good
9,095 reviews

Crew

8.1

Food

6.6

Comfort

7.3

Entertainment

7.1

Boarding

7.7

Overall

7.4

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
4,088 reviews
United Airlines
7.4
Good
9,095 reviews

Crew

8.1

Food

6.6

Comfort

7.3

Entertainment

7.1

Boarding

7.7

Overall

7.4

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
7,626 reviews
United Airlines
7.4
Good
9,095 reviews

Crew

8.1

Food

6.6

Comfort

7.3

Entertainment

7.1

Boarding

7.7

Overall

7.4

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
1,102 reviews
United Airlines
7.4
Good
9,095 reviews

Crew

8.1

Food

6.6

Comfort

7.3

Entertainment

7.1

Boarding

7.7

Overall

7.4

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 Lufthansa and Turkish Airlines fly from San Francisco to Sofia in about 15h 20m. The time it takes to get you to your destination can typically vary by up to 6h 20m. San Francisco and Sofia are separated by a distance of 6481 mi. This flight may include one or multiple stops.

  • 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 United Airlines, from $616. Users have found that Turkish Airlines is 34% 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 $339 on Lufthansa. Other airlines that offer cheap prices include KLM from $461 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, Beyazit Meydani, and Laleli Camii more than anywhere else. Taksim Square, Beyazit Meydani, and Laleli Camii can be visited by traveling about 20.8 mi, 21.7 mi, and 21.5 mi respectively from Istanbul. Those on a layover in Istanbul in need of a rental car can book one at Istanbul for about $34.

  • 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 $821). 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

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Top 4 airlines flying from San Francisco to Sofia

Discover the top 4 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 December 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
Turkish AirlinesCheapest$542Average$683FlexibilityNo cancel feeOn-time77%
LufthansaCheapest$565Average$899FlexibilityNo cancel feeOn-time76%
United AirlinesCheapest$616Average$957FlexibilityNo cancel feeOn-time69%
ITA AirwaysCheapest$652Average$1,154FlexibilityNo cancel feeOn-time81%

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