$563 Cheap Flights from Sofia (SOF) to San Francisco (SFO)

View $563 flight on Thu, May 7, 2026Opens in a new window

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

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

Prices were available within the past 7 days and start at $563 for one-way flights and $853 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

British Airways
Sun, Nov 22 - Sun, Nov 29
SOF
Sofia
SFO
San Francisco
$853 Roundtrip, found 2 days ago
$853
Roundtrip
found 2 days ago
Select British Airways flight, departing Sun, Nov 22 from Sofia to San Francisco, returning Sun, Nov 29, priced at $853 found 2 days ago
British Airways
Wed, Sep 30 - Wed, Oct 14
SOF
Sofia
SFO
San Francisco
$854 Roundtrip, found 2 hours ago
$854
Roundtrip
found 2 hours ago
Select British Airways flight, departing Wed, Sep 30 from Sofia to San Francisco, returning Wed, Oct 14, priced at $854 found 2 hours ago
LOT-Polish Airlines
Tue, Jun 2 - Sun, Jun 28
SOF
Sofia
SFO
San Francisco
$857 Roundtrip, found 4 days ago
$857
Roundtrip
found 4 days ago
Select LOT-Polish Airlines flight, departing Tue, Jun 2 from Sofia to San Francisco, returning Sun, Jun 28, priced at $857 found 4 days ago
LOT-Polish Airlines
Thu, Oct 1 - Thu, Oct 15
SOF
Sofia
SFO
San Francisco
$859 Roundtrip, just found
$859
Roundtrip
just found
Select LOT-Polish Airlines flight, departing Thu, Oct 1 from Sofia to San Francisco, returning Thu, Oct 15, priced at $859 just found
British Airways
Sun, Nov 22 - Sun, Nov 29
SOF
Sofia
SFO
San Francisco
$865 Roundtrip, found 2 days ago
$865
Roundtrip
found 2 days ago
Select British Airways flight, departing Sun, Nov 22 from Sofia to San Francisco, returning Sun, Nov 29, priced at $865 found 2 days ago
Lufthansa
Fri, Mar 20 - Mon, Mar 30
SOF
Sofia
SFO
San Francisco
$895 Roundtrip, found 3 days ago
$895
Roundtrip
found 3 days ago
Select Lufthansa flight, departing Fri, Mar 20 from Sofia to San Francisco, returning Mon, Mar 30, priced at $895 found 3 days ago
Air Canada
Thu, Oct 1 - Thu, Oct 15
SOF
Sofia
SFO
San Francisco
$932 Roundtrip, just found
$932
Roundtrip
just found
Select Air Canada flight, departing Thu, Oct 1 from Sofia to San Francisco, returning Thu, Oct 15, priced at $932 just found
Swiss International Air Lines
Thu, Oct 1 - Thu, Oct 15
SOF
Sofia
SFO
San Francisco
$938 Roundtrip, just found
$938
Roundtrip
just found
Select Swiss International Air Lines flight, departing Thu, Oct 1 from Sofia to San Francisco, returning Thu, Oct 15, priced at $938 just found
Austrian Airlines
Wed, Apr 1 - Fri, Apr 24
SOF
Sofia
SFO
San Francisco
$940 Roundtrip, found 5 days ago
$940
Roundtrip
found 5 days ago
Select Austrian Airlines flight, departing Wed, Apr 1 from Sofia to San Francisco, returning Fri, Apr 24, priced at $940 found 5 days ago
British Airways
Wed, Sep 30 - Wed, Oct 14
SOF
Sofia
SFO
San Francisco
$954 Roundtrip, found 2 hours ago
$954
Roundtrip
found 2 hours ago
Select British Airways flight, departing Wed, Sep 30 from Sofia to San Francisco, returning Wed, Oct 14, priced at $954 found 2 hours ago

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Alternative airports near San Francisco

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

Select flight to San Francisco Intl. SFO. Cheapest and Closest option available. Average driving time to city center is 19 minutes. Flights from $955
SFO
San Francisco Intl.
CheapestClosest
Average driving time to city center19 min
Flights from $955

Frequently asked questions

How much does a flight from Sofia (SOF) to San Francisco, CA (SFO-San Francisco Intl.) cost?
You can find cheap one-way flights from $563 and cheap return flights from $853 Sofia (SOF) to San Francisco, CA (SFO-San Francisco Intl.) with Expedia. One-way flights typically cost between $910 and $3800, and return flights often range between $960 and $4604. 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 Sofia (SOF) to San Francisco, CA (SFO-San Francisco Intl.) 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 Sofia (SOF) to San Francisco, CA (SFO-San Francisco Intl.)?
The cheapest month to fly from SOF to SFO is November when demand is low. Traveling in off-peak or shoulder months is usually a good way to secure cheap tickets, just remember to avoid flying during holidays if you're able to. Use the calendar view in your search to see which months have low fares on this route.
Which airlines fly direct from Sofia (SOF) to San Francisco, CA (SFO-San Francisco Intl.)?
Enter SOF to SFO and your travel dates, then apply the 'Nonstop' filter to see only direct flights.
What is the cheapest airline that flies from Sofia (SOF) to San Francisco, CA (SFO-San Francisco Intl.)?
KLM is one of the cheapest airlines offering connecting flights from Sofia (SOF) to San Francisco, CA (SFO-San Francisco Intl.), with round-trip tickets starting from around $979.51 with a layover in Schiphol (AMS). 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 Sofia (SOF) to San Francisco, CA (SFO-San Francisco Intl.)?
To find a cheap flight from Sofia (SOF) to San Francisco, CA (SFO-San Francisco Intl.), 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 Sofia (SOF) to San Francisco, CA (SFO-San Francisco Intl.)?
The best time to fly is usually mid-week (Tuesday or Wednesday) and during early morning hours as flights tend to be cheaper, less crowded, and generally more on-time. Avoid major holidays and peak vacation seasons for smoother travel. Combining off-peak days and hours often gives the best combination of cost, comfort, and convenience.
What is the earliest flight from Sofia (SOF) to San Francisco, CA (SFO-San Francisco Intl.)?
Sort flights by "Departure (earliest)" on Expedia to find the earliest flight from SOF to SFO. 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 Sofia (SOF) to San Francisco, CA (SFO-San Francisco Intl.)?
The most popular departure times for flights from Sofia (SOF) to San Francisco International Airport (SFO) are in the early morning, from 6am to 9am. About 66% of passengers prefer this time window. Many major carriers, including Lufthansa, Bulgaria Air, and United Airlines, offer flights during this period. This timing works well because it allows you to arrive in San Francisco with plenty of time to explore the city.
How long does it take to fly from Sofia (SOF) to San Francisco, CA (SFO-San Francisco Intl.)?
A flight from SOF to SFO with a layover takes around 15 hours 50 minutes, with the route 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 Sofia (SOF) to San Francisco, CA (SFO-San Francisco Intl.)?
You can fly business class between SOF and SFO. Airlines that offer business class service on this route include:

  • Austrian Airlines
  • Lufthansa
  • Turkish Airlines
  • British Airways
  • Qatar Airways
  • Swiss International Air Lines
  • flydubai
  • Bulgaria Air
  • Helvetic Airways
  • ITA Airways

How do I earn miles on a Sofia (SOF) to San Francisco, CA (SFO-San Francisco Intl.) flight with Expedia?
It's easy to earn miles on a Sofia (SOF) to San Francisco, CA (SFO-San Francisco Intl.) 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.
What airports do you fly into for San Francisco from SOF (SOF)?
If you're planning to travel to San Francisco from SOF (SOF), you can fly into San Francisco Intl. (SFO) Some flights may connect through major hubs like Vienna Intl. (VIE), Frankfurt Intl. (FRA), Franz Josef Strauss Intl. (MUC) before reaching San Francisco. Compare routes and airports on Expedia to find the best flight options for your travel plans.
Is it cheaper to buy a plane ticket from Sofia (SOF) to San Francisco, CA (SFO-San Francisco Intl.) at the last minute?
Typically, booking a last minute flight from Sofia (SOF) to San Francisco, CA (SFO-San Francisco Intl.) 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 Sofia (SOF) to San Francisco, CA (SFO-San Francisco Intl.) flight and hotel package?
Securing a Sofia (SOF) to San Francisco, CA (SFO-San Francisco Intl.) San Francisco 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 Sofia (SOF) to San Francisco, CA (SFO-San Francisco Intl.)?
If you booked your Sofia (SOF) to San Francisco, CA (SFO-San Francisco Intl.) 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
Sofia
Destination airport
San Francisco Intl.
Airlines serving
Air Canada, Air France, Austrian Airlines, British Airways, Emirates, ITA Airways, JetBlue Airways, KLM, LOT-Polish Airlines, Lufthansa, Qatar Airways, Swiss International Air Lines, Turkish Airlines, United
Roundtrip price
$852
Distance
6486 mi

Book with confidence

Sofia to San Francisco Flights

The cheapest times to fly from Sofia to San Francisco

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 Sofia to San Francisco are during the month of November. You can find some of the cheapest flights from Sofia to San Francisco with Expedia's search tool and vast selection of airlines.

 

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

Sunday is one of the best days to book for cheap flights from Sofia to San Francisco: 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 Sofia to San Francisco

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 Sofia to San Francisco in 2026. You can also book with separate airlines for your outbound and return journeys, from $563 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 Sofia to San Francisco 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 Sofia to San Francisco 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.

 

Sofia to San Francisco Flights

*Flight schedules are subject to change.

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*Available to One Key members.