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Flights from San Francisco to Sofia

What to know about flights from San Francisco to Sofia?

The distance between San Francisco and Sofia is approximately 10,438.33 km. Based on Trip.com's data, travel demand peaks in December.

Cheapest one-way
$620
Swiss Airlines Swiss Airlines SFO-SOF 32h 50m · 1 stop Mon, Oct 26
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Cheapest round-trip
$762
Turkish Airlines Turkish Airlines SFO-SOF 16h 15m · 2 stops Tue, Dec 8 - Tue, Dec 15
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Recommended airlines
Swiss Airlines Swiss AirlinesCheapest· From $620 United Airlines United AirlinesMost booked
When to travel
January
Cheapest
December
Peak season for travel
Route details
10,438.33 km
Flight distance

Explore the cheapest one-way and round-trip flights from San Francisco to Sofia over the next 90 days, with one-way fares from $620 and round-trip from $762. Based on Trip.com's latest 7-day flight data.

    • SFO 6:35 PM
      16h 15m
      1 stop
      SOF 8:50 PM
      San Francisco - Sofia | Tue, Dec 8 | Turkish Airlines
      SOF 4:00 PM
      34h 30m
      1 stop
      SFO 4:30 PM
      Sofia - San Francisco | Tue, Dec 15 | Turkish Airlines
      $762 $1,175
      35% off
      35% off
      $1,175 $762
    • SFO 9:40 PM
      15h 15m
      1 stop
      SOF 10:55 PM
      San Francisco - Sofia | Sat, Nov 21 | Lufthansa
      SOF 3:00 PM
      35h 30m
      1 stop
      SFO 4:30 PM
      Sofia - San Francisco | Sat, Nov 28 | Swiss Airlines
      $823 $1,175
      30% off
      30% off
      $1,175 $823
    • SFO 6:45 PM
      18h 15m
      1 stop
      SOF 11:00 PM
      San Francisco - Sofia | Sat, Nov 21 | United Airlines
      SOF 3:00 PM
      35h 30m
      1 stop
      SFO 4:30 PM
      Sofia - San Francisco | Sat, Nov 28 | Swiss Airlines
      $833 $1,175
      28% off
      28% off
      $1,175 $833
    • SFO 7:35 PM
      34h 35m
      1 stop
      SOF 3:10 PM
      San Francisco - Sofia | Wed, Nov 4 | Turkish Airlines
      SOF 9:30 AM
      18h
      1 stop
      SFO 5:30 PM
      Sofia - San Francisco | Sat, Nov 7 | Turkish Airlines
      $845
      28% off
      $1,175 $845
    • SFO 9:40 PM
      15h 15m
      1 stop
      SOF 10:55 PM
      San Francisco - Sofia | Sat, Nov 28 | United Airlines
      SOF 3:00 PM
      35h 30m
      1 stop
      SFO 4:30 PM
      Sofia - San Francisco | Sat, Dec 5 | Swiss Airlines
      $845
      28% off
      $1,175 $845
    • SFO 7:35 PM
      16h 15m
      1 stop
      SOF 8:50 PM
      San Francisco - Sofia | Tue, Nov 3 | Turkish Airlines
      SOF 4:00 PM
      35h 30m
      1 stop
      SFO 5:30 PM
      Sofia - San Francisco | Fri, Nov 6 | Turkish Airlines
      $852
      27% off
      $1,175 $852
    • SFO 6:25 PM
      15h 55m
      1 stop
      SOF 7:20 PM
      San Francisco - Sofia | Tue, Nov 3 | British Airways
      SOF 7:45 PM
      29h 10m
      1 stop
      SFO 2:55 PM
      Sofia - San Francisco | Fri, Nov 6 | British Airways
      $853
      27% off
      $1,175 $853
    • SFO 8:35 PM
      37h 35m
      1 stop
      SOF 8:10 PM
      San Francisco - Sofia | Sat, Nov 21 | British Airways
      SOF 5:15 PM
      31h 40m
      1 stop
      SFO 2:55 PM
      Sofia - San Francisco | Sat, Nov 28 | British Airways
      $868
      26% off
      $1,175 $868
    • SFO 9:40 PM
      15h 15m
      1 stop
      SOF 10:55 PM
      San Francisco - Sofia | Sat, Nov 28 | Lufthansa
      SOF 3:00 PM
      35h 30m
      1 stop
      SFO 4:30 PM
      Sofia - San Francisco | Sat, Dec 5 | Swiss Airlines
      $868
      26% off
      $1,175 $868
    • SFO 1:00 PM
      17h 25m
      1 stop
      SOF 2:00 PM
      San Francisco - Sofia | Mon, Oct 26 | Normal Airline
      SOF 3:00 PM
      6h
      Nonstop
      SFO 4:00 PM
      Sofia - San Francisco | Wed, Oct 28 | Normal Airline
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    • Cheapest
      SFO 8:25 PM
      32h 50m
      1 stop
      SOF 2:15 PM
      San Francisco - Sofia | Mon, Oct 26 | Swiss Airlines
      $620 $953
      35% off
      35% off
      $953 $620
    • SFO 10:40 PM
      15h 15m
      1 stop
      SOF 10:55 PM
      San Francisco - Sofia | Mon, Oct 26 | United Airlines
      $659 $953
      31% off
      31% off
      $953 $659
    • SFO 4:35 PM
      17h
      1 stop
      SOF 6:35 PM
      San Francisco - Sofia | Mon, Oct 26 | British Airways
      $661 $953
      31% off
      31% off
      $953 $661
    • SFO 10:40 PM
      15h 15m
      1 stop
      SOF 10:55 PM
      San Francisco - Sofia | Mon, Oct 26 | Lufthansa
      $662
      31% off
      $953 $662
    • SFO 7:35 PM
      34h 35m
      1 stop
      SOF 3:10 PM
      San Francisco - Sofia | Mon, Oct 26 | Turkish Airlines
      $705
      26% off
      $953 $705
    • SFO 1:00 PM
      17h 25m
      1 stop
      SOF 2:00 PM
      San Francisco - Sofia | Mon, Oct 26 | Normal Airline
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    • SFO 10:40 PM
      15h 15m
      1 stop
      SOF 10:55 PM
      San Francisco - Sofia | Mon, Oct 26 | United Airlines
      $659 $953
      31% off
      31% off
      $953 $659
    • SFO 10:40 PM
      15h 15m
      1 stop
      SOF 10:55 PM
      San Francisco - Sofia | Mon, Oct 26 | Lufthansa
      $662 $953
      31% off
      31% off
      $953 $662
    • SFO 4:35 PM
      17h
      1 stop
      SOF 6:35 PM
      San Francisco - Sofia | Mon, Oct 26 | British Airways
      $661 $953
      31% off
      31% off
      $953 $661
    • SFO 8:25 PM
      32h 50m
      1 stop
      SOF 2:15 PM
      San Francisco - Sofia | Mon, Oct 26 | Swiss Airlines
      $620
      35% off
      $953 $620
    • SFO 7:35 PM
      34h 35m
      1 stop
      SOF 3:10 PM
      San Francisco - Sofia | Mon, Oct 26 | Turkish Airlines
      $705
      26% off
      $953 $705
    • SFO 1:00 PM
      17h 25m
      1 stop
      SOF 2:00 PM
      San Francisco - Sofia | Mon, Oct 26 | Normal Airline
      Find more flights
      Find more flights

Displayed flight fares from San Francisco to Sofia are based on average prices across airlines for the next 3 months, according to the latest Trip.com database.

Which airlines are the most popular for San Francisco to Sofia flights?

You can choose from 1 airlines that fly from San Francisco to Sofia, including United Airlines, Swiss Airlines has lowest fares on this route.
United Airlines logo United Airlines
Airlines are determined based on actual purchased flight tickets from San Francisco to Sofia according to previous 12 months data from Trip.com.

Frequently Asked Questions

  • What are the cheapest flights from San Francisco to Sofia (SFO-SOF)?

    Based on Trip.com data, Swiss Airlines offers one-way fares as low as $620 on Cheapest nonstop routes (e.g. SFO to SOF on Mon, Oct 26), while Turkish Airlines offers Cheapest nonstop round-trips from $762 departing on Tue, Dec 8 and returning on Tue, Dec 15.
  • At the moment, several airlines serve connecting flights from San Francisco to Sofia, including: United Airlines Selected airlines are based on historical data collected from flight bookings made by users on Trip.com within the last 90 days.
  • By analyzing data from all airlines on the Trip.com flight calendar, it looks like the best time to book a flight from San Francisco to Sofia is around 40 days (6 weeks) in advance, and the best time to fly is usually on Tuesday, Wednesday, and Saturday. Tuesday typically offers the cheapest flights for departure, while Saturday offers the best return deals.
  • To find best deals on flights from San Francisco to Sofia, you can use various tools on Trip.com:
    · Be flexible with your travel dates to get the cheapest flight deal. Now the cheapest flight deal is on Mon, Oct 26, with one-way flights priced at just $620.
    · Compare airlines strategically. Budget carriers often provide the lowest base fares, while we found the most affordable airline currently operating on this route is Swiss Airlines.
    · Set up price alerts to easily monitor ticket prices without having to check every day.
    · Check Trip.com flight deals and promo codes frequently.
    · Avoid peak season unless you book very early. It seems the peak season for Sofia travel is around December.
    · Get exclusive promo codes for Trip.com app users.
  • The cheapest months to fly from San Francisco to Sofia is January, when demand for travel is lower.
  • After crunching the numbers on our October flight calendar, it's currently cheapest to fly from San Francisco to Sofia on October 26, 2026 with United Airlines, with prices starting at $470.
  • You can arrive at any of the following airports in Sofia: Sofia Airport (SOF). Flights from San Francisco International Airport to Sofia Airport (SFO-SOF) are by far the most popular option for this route.
  • The time difference between Sofia and San Francisco is 10h.
  • Tickets can only be changed or canceled if permitted by airline policy. To submit a change or cancellation request, go to the flight bookings page, select the option to change or cancel your booking, choose the relevant passengers and segment, and submit a request. Please note that additional charges may apply according to the airline ticket policy. However, if the flight has been rescheduled and you would like to change or cancel your ticket, you can submit an involuntary cancellation request. For more details about change and cancellation policies, please check the customer support pages.
  • Based on Trip.com data for flights departing in the next 30 days, the average one-way fare from San Francisco to Sofia is $723. Fares vary by travel date, airline and availability.
  • Enter San Francisco and Sofia, choose your travel dates and passengers, then compare flights by price, duration and baggage. Select a fare, review the change and cancellation rules, enter traveler details and complete payment to receive your confirmation.

Explore More Popular Flights

Note: Prices shown on this page are estimated lowest price and include all taxes and fees found in the last 24 hours.

Book with no extra fees

Prices displayed in this page are all-inclusive prices (incl. taxes, fuel surcharge, civil aviation development fund, etc) with all fees confirmed before payment. Fees for luggage, meals, WLAN, or other additional services are also included as shown in the flight cards.

Real-time pricing updates

Prices, availability, and travel information on this page were updated within last 24 hours—even in real-time. The more popular the route, the more precise the data.

Change & Cancellation Policy

Trip.com displays flight cancellation and change policies for each flight ticket during the booking process, including fees and applicable conditions. Please check the following scenarios:
Voluntary cancellation/change:
To submit a change or cancellation request, go to the flight bookings page, select the option to change or cancel your booking, choose the relevant passengers and segment, and submit a request. Please note that additional charges may apply according to the airline ticket policy.
Cancellation/change due to a flight schedule change:
If the flight has been rescheduled and you would like to change or cancel your ticket, you can submit an involuntary cancellation request. For more details about change and cancellation policies, please check the customer support pages.