$581 Cheap Flights from Sofia (SOF) to San Francisco (SFO)

View $581 flight on Fri, Oct 23, 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 $581 for one-way flights and $850 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Bulgaria Air
Wed, Sep 9 - Thu, Sep 10
SOF
Sofia
SFO
San Francisco
$850 Roundtrip, found 6 days ago
$850
Roundtrip
found 6 days ago
Select Bulgaria Air flight, departing Wed, Sep 9 from Sofia to San Francisco, returning Thu, Sep 10, priced at $850 found 6 days ago
Bulgaria Air
Wed, Sep 9 - Thu, Sep 10
SOF
Sofia
SFO
San Francisco
$870 Roundtrip, found 6 days ago
$870
Roundtrip
found 6 days ago
Select Bulgaria Air flight, departing Wed, Sep 9 from Sofia to San Francisco, returning Thu, Sep 10, priced at $870 found 6 days ago
LOT-Polish Airlines
Fri, Jul 17 - Thu, Jul 30
SOF
Sofia
SFO
San Francisco
$939 Roundtrip, found 23 hours ago
$939
Roundtrip
found 23 hours ago
Select LOT-Polish Airlines flight, departing Fri, Jul 17 from Sofia to San Francisco, returning Thu, Jul 30, priced at $939 found 23 hours ago
Bulgaria Air
Wed, Sep 9 - Thu, Sep 10
SOF
Sofia
SFO
San Francisco
$940 Roundtrip, found 6 days ago
$940
Roundtrip
found 6 days ago
Select Bulgaria Air flight, departing Wed, Sep 9 from Sofia to San Francisco, returning Thu, Sep 10, priced at $940 found 6 days ago
Lufthansa
Fri, Sep 11 - Sun, Sep 20
SOF
Sofia
SFO
San Francisco
$951 Roundtrip, found 2 days ago
$951
Roundtrip
found 2 days ago
Select Lufthansa flight, departing Fri, Sep 11 from Sofia to San Francisco, returning Sun, Sep 20, priced at $951 found 2 days ago
Lufthansa
Fri, Oct 2 - Sun, Nov 1
SOF
Sofia
SFO
San Francisco
$954 Roundtrip, found 1 day ago
$954
Roundtrip
found 1 day ago
Select Lufthansa flight, departing Fri, Oct 2 from Sofia to San Francisco, returning Sun, Nov 1, priced at $954 found 1 day ago
Air Canada
Fri, Oct 2 - Sun, Nov 1
SOF
Sofia
SFO
San Francisco
$954 Roundtrip, found 1 day ago
$954
Roundtrip
found 1 day ago
Select Air Canada flight, departing Fri, Oct 2 from Sofia to San Francisco, returning Sun, Nov 1, priced at $954 found 1 day ago
Lufthansa
Fri, Oct 2 - Sun, Nov 1
SOF
Sofia
SFO
San Francisco
$955 Roundtrip, found 1 day ago
$955
Roundtrip
found 1 day ago
Select Lufthansa flight, departing Fri, Oct 2 from Sofia to San Francisco, returning Sun, Nov 1, priced at $955 found 1 day ago
Swiss International Air Lines
Tue, Sep 1 - Tue, Sep 15
SOF
Sofia
SFO
San Francisco
$959 Roundtrip, found 3 days ago
$959
Roundtrip
found 3 days ago
Select Swiss International Air Lines flight, departing Tue, Sep 1 from Sofia to San Francisco, returning Tue, Sep 15, priced at $959 found 3 days ago
British Airways
Sun, Sep 20 - Wed, Sep 30
SOF
Sofia
SFO
San Francisco
$962 Roundtrip, found 4 days ago
$962
Roundtrip
found 4 days ago
Select British Airways flight, departing Sun, Sep 20 from Sofia to San Francisco, returning Wed, Sep 30, priced at $962 found 4 days ago

What you need to know for your flight from Sofia to San Francisco Intl.

Sofia (SOF) to San Francisco (SFO) at a glance

Travel between Sofia (SOF) and San Francisco (SFO) with a range of airlines catering to this international long-haul journey. Whether you prefer full-service airlines or budget-friendly options, you can compare various itineraries to find one that aligns with your budget, schedule, and travel plans. As you prepare to explore the iconic sights and neighborhoods of San Francisco, check out the essential flight details from Sofia Airport (SOF) to San Francisco International Airport (SFO).

  • Fastest flight duration: around 14 hours in-flight, plus roughly 2h 30m layover with one stop
  • Route distance: roughly 6,500 miles (10,460 km)
  • Flights per week: around 7 departures on average
  • Typical fares (one-way): economy tickets often range from $425–$1175, depending on seasonality and how far ahead you book

Flights from Sofia Airport (SOF) to San Francisco International Airport (SFO)

Based on recent traveler bookings, here are the top airlines flying from Sofia to San Francisco, typically favored for their one-stop services. Common layover points include Franz Josef Strauss International Airport, MUC (approximately 2h 30m layover), Frankfurt International Airport, FRA (around 2h 30m layover), and Istanbul Airport, IST (about 2h 30m layover). These options allow you to customize your journey by balancing price, total travel time, and cabin class to secure the best itinerary.

  • Lufthansa: As a full-service airline, Lufthansa provides one-stop flights, with one-way prices generally falling between $425 and $1175. This carrier represents about 56% of flights on this route, with an in-flight duration of 14 hours and a total travel time of approximately 16 hours and 15 minutes, including layover.
  • United: United Airlines, also a full-service carrier, offers one-stop service with one-way fares typically ranging from $510 to $1625. It accounts for around 19% of departures on this route, featuring a flight time of 14 hours and an overall journey time of roughly 16 hours and 15 minutes, factoring in the layover.
  • Turkish Airlines: This full-service airline provides one-stop flights, with one-way fares usually between $425 and $955. Turkish Airlines makes up about 16% of departures on this route, with a flight time of 14 hours and a total journey time estimated at 16 hours and 15 minutes, including the layover.
  • Swiss International Air Lines: Swiss International Air Lines offers one-stop service as a full-service carrier, with one-way fares typically ranging from $505 to $985. It constitutes approximately 6% of flights on this route, with 14 hours of in-flight time and a total travel duration of around 16 hours and 15 minutes, including layover.

Alternative routes from Sofia (SOF) to San Francisco (SFO)

  • Sofia to Oakland (SOF-OAK): Located approximately 12 miles from San Francisco International Airport (SFO), Oakland International Airport (OAK) serves as a convenient alternative for travelers.
  • Sofia to San Jose (SOF-SJC): Norman Y. Mineta San Jose International Airport (SJC) is roughly 30 miles from San Francisco International Airport (SFO), providing another viable flight option.

How to find the best prices for flights from Sofia (SOF) to San Francisco (SFO)

Getting some of the best deals on flights from Sofia to San Francisco is all about timing and flexibility. Here are some key tips to help you save:

  1. Best times to book and fly: cheaper fares are usually found when booking at least two months in advance, although most travelers tend to book between two to eight weeks ahead. Morning departures from 5 a.m. to 12 p.m. often offer lower prices, while afternoon flights from 12 p.m. to 6 p.m. are more popular. Additionally, flying on Monday generally provides cheaper options, but Saturday remains the most popular travel day.
  2. Set up price alerts: stay updated on price changes by using Expedia's Price Tracker. Receive alerts when fares drop for your selected route.
  3. Bundle and save: bundle your flight and hotel to save on Expedia, or unlock a hotel deal after booking your flight.*
  4. Compare flight options: use Expedia's search tool to compare airlines, routes, direct vs. non-direct flights, and flight times. You can also sort by price to find the most affordable options.
  5. Stay flexible with dates: being open to different travel days can sometimes help you find better prices on flights and hotels.
  6. Think about luggage: nowadays, it's important to check the airline's baggage policies to find the best value. That may be paying for an additional carry-on bag or booking a ticket with checked luggage included. Either way, double-check your allowance before confirming your booking to avoid excess baggage fees at the airport.

*Members only. Savings vary and are not available on all bundles. Select hotels.

Arriving at San Francisco International Airport from Sofia Airport

San Francisco welcomes travelers from Sofia with a range of transport options based on price, convenience, and proximity. Here's how to reach San Francisco efficiently:

  • Hotel transfer: Transfers offer a convenient way to reach your hotel in San Francisco, with private rides that can be arranged in advance.
  • Car rental: Renting a car from San Francisco International Airport is a great option if you plan to explore and sightsee beyond the city. Browse cheap car rentals at San Francisco International Airport on Expedia.
  • Taxi/ride-hailing: Taxis and ride-hailing services may be available from designated pickup areas outside the terminal, check locally on arrival.
  • Public transportation: From San Francisco International Airport, San Francisco Intl. Airport Station, a metro station, is located just 0.2 miles from the airport, easily accessible on foot, while San Bruno Station, a train station, is situated about 2.4 miles away and typically reached by car.

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 $581 and cheap return flights from $850 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 September 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, ITA Airways, Iberia, JetBlue Airways, KLM, LOT-Polish Airlines, Lufthansa, Swiss International Air Lines, Tarom-Romanian Air Transport, Turkish Airlines, United
Roundtrip price
$850
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 September. 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 $581 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.

*Available to One Key members.

 

How to find the latest flight deals from Sofia (SOF) to San Francisco (SFO)?

Last updated:

This page highlights the latest flight deals from Sofia to San Francisco (SOF to SFO), including one-way and roundtrip options from multiple airlines. The deals featured here are updated regularly, so you’ll always find the most up-to-date prices and best available flights for your trip from Sofia to San Francisco.

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