$345 Cheap Flights from San Francisco (SFO) to Sofia (SOF)

View $345 flight on Sun, Sep 13, 2026Opens in a new window

Popular airlines from San Francisco Intl. Airport (SFO) to Sofia Airport (SOF)

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Cheap Flights from San Francisco to Sofia (SFO-SOF)

Prices were available within the past 7 days and start at $345 for one-way flights and $748 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Lufthansa
Wed, Oct 28 - Wed, Nov 4
SFO
San Francisco
SOF
Sofia
$748 Roundtrip, found 3 hours ago
$748
Roundtrip
found 3 hours ago
Select Lufthansa flight, departing Wed, Oct 28 from San Francisco to Sofia, returning Wed, Nov 4, priced at $748 found 3 hours ago
Lufthansa
Wed, Oct 28 - Wed, Nov 4
SFO
San Francisco
SOF
Sofia
$748 Roundtrip, found 3 hours ago
$748
Roundtrip
found 3 hours ago
Select Lufthansa flight, departing Wed, Oct 28 from San Francisco to Sofia, returning Wed, Nov 4, priced at $748 found 3 hours ago
Air Canada
Sun, Nov 15 - Fri, Dec 4
SFO
San Francisco
SOF
Sofia
$748 Roundtrip, found 12 hours ago
$748
Roundtrip
found 12 hours ago
Select Air Canada flight, departing Sun, Nov 15 from San Francisco to Sofia, returning Fri, Dec 4, priced at $748 found 12 hours ago
United
Sun, Nov 15 - Fri, Dec 4
SFO
San Francisco
SOF
Sofia
$748 Roundtrip, found 12 hours ago
$748
Roundtrip
found 12 hours ago
Select United flight, departing Sun, Nov 15 from San Francisco to Sofia, returning Fri, Dec 4, priced at $748 found 12 hours ago
Lufthansa
Sun, Dec 27 - Thu, Jan 21
SFO
San Francisco
SOF
Sofia
$749 Roundtrip, found 4 days ago
$749
Roundtrip
found 4 days ago
Select Lufthansa flight, departing Sun, Dec 27 from San Francisco to Sofia, returning Thu, Jan 21, priced at $749 found 4 days ago
Lufthansa
Wed, Oct 28 - Wed, Nov 4
SFO
San Francisco
SOF
Sofia
$750 Roundtrip, found 3 hours ago
$750
Roundtrip
found 3 hours ago
Select Lufthansa flight, departing Wed, Oct 28 from San Francisco to Sofia, returning Wed, Nov 4, priced at $750 found 3 hours ago
Lufthansa
Sun, Dec 27 - Thu, Jan 21
SFO
San Francisco
SOF
Sofia
$750 Roundtrip, found 4 days ago
$750
Roundtrip
found 4 days ago
Select Lufthansa flight, departing Sun, Dec 27 from San Francisco to Sofia, returning Thu, Jan 21, priced at $750 found 4 days ago
Lufthansa
Wed, Oct 28 - Wed, Nov 4
SFO
San Francisco
SOF
Sofia
$751 Roundtrip, found 3 hours ago
$751
Roundtrip
found 3 hours ago
Select Lufthansa flight, departing Wed, Oct 28 from San Francisco to Sofia, returning Wed, Nov 4, priced at $751 found 3 hours ago
Swiss International Air Lines
Mon, Aug 10 - Tue, Aug 25
SFO
San Francisco
SOF
Sofia
$752 Roundtrip, found 3 days ago
$752
Roundtrip
found 3 days ago
Select Swiss International Air Lines flight, departing Mon, Aug 10 from San Francisco to Sofia, returning Tue, Aug 25, priced at $752 found 3 days ago
Turkish Airlines
Sun, Nov 15 - Fri, Dec 4
SFO
San Francisco
SOF
Sofia
$754 Roundtrip, found 12 hours ago
$754
Roundtrip
found 12 hours ago
Select Turkish Airlines flight, departing Sun, Nov 15 from San Francisco to Sofia, returning Fri, Dec 4, priced at $754 found 12 hours ago

Alternative airports near Sofia

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Sofia Airport SOF. Cheapest and Closest option available. Average driving time to city center is 11 minutes. Flights from $993
SOF
Sofia Airport
CheapestClosest
Average driving time to city center11 min
Flights from $993

Frequently asked questions

How much does a flight from San Francisco, CA (SFO-San Francisco Intl.) to Sofia (SOF) cost?
You can find cheap one-way flights and cheap return flights from $748 San Francisco, CA (SFO-San Francisco Intl.) to Sofia (SOF) with Expedia. One-way flights typically cost between $427 and $4713, and return flights often range between $730 and $6512. Flight prices vary based on the month and day of the week you want to travel, as well as the airline and how far in advance you book your ticket. Filter your search on Expedia by "Price (lowest to highest)" to see the cheapest fares first, and use the Price Tracking tool to receive alerts when San Francisco, CA (SFO-San Francisco Intl.) to Sofia (SOF) ticket fares go up or down.*Typical price ranges based on flights available on Expedia in the last year. Prices include multi-airline options.
What is the cheapest month to fly from San Francisco, CA (SFO-San Francisco Intl.) to Sofia (SOF)?
November is typically the cheapest month to fly from San Francisco (SFO) to Sofia (SOF), with average round-trip fares around $651. This is about 29% lower than the average price throughout the year, as demand tends to decrease after the summer travel season. Other budget-friendly months to fly from San Francisco to Sofia include January and February.*Averages based on flights available on Expedia in the last year.
Which airlines fly direct from San Francisco, CA (SFO-San Francisco Intl.) to Sofia (SOF)?
Enter SFO to SOF and your travel dates, then apply the 'Nonstop' filter to see only direct flights.
What is the cheapest airline that flies from San Francisco, CA (SFO-San Francisco Intl.) to Sofia (SOF)?
Air Serbia is one of the cheapest airlines offering connecting flights from San Francisco, CA (SFO) to Sofia (SOF), with round-trip tickets starting from around $1,551. Use Expedia's search tool to compare the prices and schedules of airlines that fly this route to find the best option for your plans and budget.*Prices based on flights available on Expedia in the last year.
How do I find cheap flights from San Francisco, CA (SFO-San Francisco Intl.) to Sofia (SOF)?
To find a cheap flight from San Francisco, CA (SFO-San Francisco Intl.) to Sofia (SOF), be flexible with your dates. Traveling outside of peak vacation months and booking a mid-week flight can help you save. Early morning and late night flights are often more affordable, too. Expedia allows you to compare flight times, airlines and routes all in one place to find low fares. You can also set up Price Tracking and receive alerts when fares go up or down.
What is the best time to fly from San Francisco, CA (SFO-San Francisco Intl.) to Sofia (SOF)?
When flying from San Francisco (SFO) to Sofia (SOF), November and February are the best months to travel, with average return flight prices around $651. These months provide a good balance of lower prices and enjoyable weather, making them great for your trip.*Prices based on flights available on Expedia in the last year.
What is the earliest flight from San Francisco, CA (SFO-San Francisco Intl.) to Sofia (SOF)?
Sort flights by "Departure (earliest)" on Expedia to find the earliest flight from SFO to SOF. To compare more early flights, use the "Early Morning" and "Morning" filters in your search.
What are the most popular departure times for flights from San Francisco, CA (SFO-San Francisco Intl.) to Sofia (SOF)?
The most popular departure times for flights from San Francisco (SFO) to Sofia (SOF) are from 12pm to 3pm. About 38% of passengers prefer this time window. Many major carriers, including United Airlines and Lufthansa, offer flights during this window. This timing is popular because it allows you to have a relaxed morning before your journey.
How long does it take to fly from San Francisco, CA (SFO-San Francisco Intl.) to Sofia (SOF)?
Flights from SFO to SOF with one stop typically take around 23 hours 20 minutes, covering approximately 6,487 miles. Keep in mind that actual flight times can vary due to wind patterns, weather, and air traffic.
Can you fly business or first class from San Francisco, CA (SFO-San Francisco Intl.) to Sofia (SOF)?
Business class is available on flights from SFO to SOF. Airlines that offer business class service on this route include:

  • Lufthansa
  • Turkish Airlines
  • United Airlines
  • Delta Air Lines
  • Air Canada
  • Virgin Atlantic
  • British Airways
  • Emirates
  • KLM
  • Swiss International Air Lines

First class is available with Lufthansa and Swiss International Air Lines.
How do I earn miles on a San Francisco, CA (SFO-San Francisco Intl.) to Sofia (SOF) flight with Expedia?
It's easy to earn miles on a San Francisco, CA (SFO-San Francisco Intl.) to Sofia (SOF) flight when you book with Expedia. Before you confirm your booking, simply select your frequent flyer program and enter your program number. As a member of One Key™, you can also earn OneKeyCash™* on top of your airline miles when you book with Expedia.*Excludes taxes and fees. OneKeyCash is not redeemable for cash and can only be used on Expedia and other participating brands.
Is it cheaper to buy a plane ticket from San Francisco, CA (SFO-San Francisco Intl.) to Sofia (SOF) at the last minute?
Typically, booking a last minute flight from San Francisco, CA (SFO-San Francisco Intl.) to Sofia (SOF) will be more expensive than booking in advance. As the departure date approaches, there are usually fewer seats available which can drive up the cost. However, if there's some wiggle room with your travel dates and times, you could bag a cheap last-minute fare.
Is it cheaper to book a San Francisco, CA (SFO-San Francisco Intl.) to Sofia (SOF) flight and hotel package?
Securing a San Francisco, CA (SFO-San Francisco Intl.) to Sofia (SOF) Sofia Vacation Packages is usually cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your travels all in one place. Select from our extensive range of stays and then add flights, activities and car rentals to your booking. Bundle everything together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from San Francisco, CA (SFO-San Francisco Intl.) to Sofia (SOF)?
If you booked your San Francisco, CA (SFO-San Francisco Intl.) to Sofia (SOF) flight within the last 24 hours, you may be able to modify or cancel it without any fees. Depending on the airline and the type of ticket you have, additional charges may apply for changes beyond this timeframe. Airline policies and contact information can be found in your itinerary or confirmation email. Or, head to our Customer Service portal if you'd like more information.

Travel information

Origin airport
San Francisco Intl.
Destination airport
Sofia
Airlines serving
Air Canada, Air France, Austrian Airlines, British Airways, Emirates, ITA Airways, Iberia, JetBlue Airways, KLM, LOT-Polish Airlines, Lufthansa, Swiss International Air Lines, Turkish Airlines, United
Roundtrip price
$747
Distance
6486 mi

Book with confidence

San Francisco to Sofia Flights

The cheapest times to fly from San Francisco to Sofia

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from San Francisco to Sofia are during the month of October. You can find some of the cheapest flights from San Francisco to Sofia with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from San Francisco to Sofia

Sunday is one of the best days to book for cheap flights from San Francisco to Sofia: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from San Francisco to Sofia

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from San Francisco to Sofia in 2026. You can also book with separate airlines for your outbound and return journeys, from $345 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap San Francisco to Sofia flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your San Francisco to Sofia airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

San Francisco to Sofia Flights

*Flight schedules are subject to change.

*Available to One Key members.

 

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