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$699+ Cheap flights from Bulgaria to San Francisco (SFO)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 3/22. Fares are subject to change and may not be available on all flights or dates of travel.
SOF — SFO
Jan 3 — Jan 101
Sat 1/3
Sat 1/10
1 adult, Economy
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Cheap flight deals from Bulgaria to San Francisco

Cheapest flights from Bulgaria to San Francisco
Explore the most affordable flight options available from Bulgaria to San Francisco. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 4, 2025.

This Kiwi.com deal was found by Cheapflights users on 12/3. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/156:10 amSOF - SFO
1 stop16h 30mLufthansa
Wed 1/149:40 pmSFO - SOF
1 stop15h 05mLufthansa
Deal found 12/3$866
This United Airlines deal was found by Cheapflights users on 12/3. 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.
Mon 12/152:20 pmSOF - SFO
1 stop15h 50mUnited Airlines
Wed 1/141:30 pmSFO - SOF
1 stop18h 50mUnited Airlines
Deal found 12/3$892
This KLM deal was found by Cheapflights users on 12/4. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/157:00 amSOF - SFO
2 stops21h 04mMultiple Airlines
Wed 1/143:40 pmSFO - SOF
1 stop36h 15mMultiple Airlines
Deal found 12/4$900
This United Airlines deal was found by Cheapflights users on 12/3. 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.
Fri 12/126:10 amSOF - SFO
2 stops26h 27mUnited Airlines
Thu 1/159:40 pmSFO - SOF
1 stop15h 05mUnited Airlines
Deal found 12/3$902
This KLM deal was found by Cheapflights users on 12/4. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/127:00 amSOF - SFO
2 stops21h 04mKLM
Thu 1/151:55 pmSFO - SOF
1 stop14h 10mKLM
Deal found 12/4$905
This KLM deal was found by Cheapflights users on 12/4. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/157:00 amSOF - SFO
2 stops21h 04mKLM
Wed 1/147:00 amSFO - SOF
2 stops21h 05mKLM
Deal found 12/4$909
This United Airlines deal was found by Cheapflights users on 12/3. 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.
Fri 12/196:05 amSOF - SFO
1 stop18h 45mUnited Airlines
Wed 1/2111:06 amSFO - SOF
2 stops21h 14mUnited Airlines
Deal found 12/3$910

Find flight deals from Bulgaria to San Francisco

Keep the following information in mind while searching for Bulgaria to San Francisco flight deals. Data was last updated December 4, 2025.

Most accurate provider

OneTravel
3 stars

Most trusted provider

OneTravel
3 stars

Round-trip from

$699
(FlightHub)

One-way from

$426
(Mytrip)

Popular in

January

Cheapest in

February

Average price

$869
Provider with most accurate pricing for Sofia-San Francisco flight deals.
Search Deals
Provider most trusted by Cheapflights users for Sofia-San Francisco flights.
Search Deals
From Bulgaria to San Francisco
Search Deals
One-way flight from Bulgaria to San Francisco
Search Deals
Highest demand for flights based on searches. 3% potential increase in price ($31 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($25 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 Bulgaria to San Francisco 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 4, 2025.
Use the filters below to find and compare flights from Bulgaria to San Francisco that are best for you.

Fly from

Bulgaria

Fly to

San Francisco

Route

Depart

Return

Price

SofiaSan Francisco

SOF - SFO

SOFSFO

Sofia

Sun 3/22

4:00 pm-5:45 pm

1 stop34h 45m

San Francisco

Sat 3/28

2:10 pm-7:15 pm

1 stop20h 05m

$699

SofiaSan Francisco

SOF - SFO

SOFSFO

Sofia

Tue 2/17

9:35 am-4:45 pm

1 stop17h 10m

San Francisco

Mon 3/16

7:50 pm-8:50 pm

1 stop16h 00m

$736

SofiaSan Francisco

SOF - SFO

SOFSFO

Sofia

Sun 2/15

4:00 pm-4:45 pm

1 stop34h 45m

San Francisco

Thu 2/19

6:50 pm-8:50 pm

1 stop16h 00m

$794

SofiaSan Francisco

SOF - SFO

SOFSFO

Sofia

Mon 3/9

9:35 am-5:45 pm

1 stop17h 10m

San Francisco

Sat 3/14

7:50 pm-8:50 pm

1 stop16h 00m

$795

SofiaSan Francisco

SOF - SFO

SOFSFO

Sofia

Tue 3/10

9:35 am-5:45 pm

1 stop17h 10m

San Francisco

Sat 3/14

7:50 pm-8:50 pm

1 stop16h 00m

$795

SofiaSan Francisco

SOF - SFO

SOFSFO

Sofia

Tue 3/10

9:35 am-5:45 pm

1 stop17h 10m

San Francisco

Sun 3/15

2:10 pm-3:10 pm

1 stop16h 00m

$795

VarnaSan Francisco

VAR - SFO

VARSFO

Varna

Wed 2/18

10:00 am-4:45 pm

1 stop16h 45m

San Francisco

Sun 2/22

1:10 pm-9:10 am

1 stop34h 00m

$806

SofiaSan Francisco

SOF - SFO

SOFSFO

Sofia

Thu 2/19

9:35 am-4:45 pm

1 stop17h 10m

San Francisco

Mon 3/16

7:50 pm-8:50 pm

1 stop16h 00m

$827

SofiaSan Francisco

SOF - SFO

SOFSFO

Sofia

Wed 2/18

6:10 am-3:55 pm

1 stop19h 45m

San Francisco

Mon 3/16

3:15 pm-10:45 pm

2 stops22h 30m

$834

SofiaSan Francisco

SOF - SFO

SOFSFO

Sofia

Mon 2/16

2:20 pm-8:10 pm

1 stop15h 50m

San Francisco

Mon 3/16

3:15 pm-10:45 pm

2 stops22h 30m

$834

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/3

Showing 1-10 of 18 results
1
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Best time to book a flight from Bulgaria to San Francisco

Have a flexible travel schedule? Discover the best time to fly to San Francisco from Bulgaria 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 Bulgaria to San Francisco

What is the cheapest month to book a flight from Bulgaria to San Francisco?

Currently, June is the cheapest month in which you can book a flight from Bulgaria to San Francisco (average of $462). Flying from Bulgaria to San Francisco in August is currently the most expensive (average of $951). 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 BG to SFO?

Find hourly flight availability from Bulgaria to San Francisco. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated December 4, 2025.

It’s typically best to fly out from Bulgaria to San Francisco in the afternoon. Doing so could potentially save you 21% on the flight price compared to flying in the morning, which is usually more expensive.

Reviews of airlines servicing San Francisco

Get insights into the airlines that provide service to San Francisco. 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 San Francisco. Reviews last updated December 4, 2025.
Peruse reviews from past customers who have flown with United Airlines, Turkish Airlines, and Lufthansa from Bulgaria to San Francisco to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
9,066 reviews

Crew

8.1

Overall

7.4

Comfort

7.3

Food

6.6

Entertainment

7.1

Boarding

7.7

Reviews

1 / 20
10.0
Excellent

Anonymous,Sep 2025

FRA - SFO

Lufthansa was amazing, I wish United States based airlines operated like them.
United Airlines
7.4
Good
9,066 reviews
United Airlines
7.4
Good
9,066 reviews

Crew

8.1

Overall

7.4

Comfort

7.3

Food

6.6

Entertainment

7.1

Boarding

7.7

Reviews

1 / 20
10.0
Excellent

Anonymous,Sep 2025

FRA - SFO

Lufthansa was amazing, I wish United States based airlines operated like them.
Turkish Airlines
7.3
Good
4,077 reviews
United Airlines
7.4
Good
9,066 reviews

Crew

8.1

Overall

7.4

Comfort

7.3

Food

6.6

Entertainment

7.1

Boarding

7.7

Reviews

1 / 20
10.0
Excellent

Anonymous,Sep 2025

FRA - SFO

Lufthansa was amazing, I wish United States based airlines operated like them.
Lufthansa
6.8
Okay
7,612 reviews
United Airlines
7.4
Good
9,066 reviews

Crew

8.1

Overall

7.4

Comfort

7.3

Food

6.6

Entertainment

7.1

Boarding

7.7

Reviews

1 / 20
10.0
Excellent

Anonymous,Sep 2025

FRA - SFO

Lufthansa was amazing, I wish United States based airlines operated like them.

Related info for your journey

Find useful and relevant information for your journey from Bulgaria to San Francisco. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly into for flights to San Francisco from Bulgaria?

    Most people fly into San Francisco (SFO) if they book a flight to San Francisco from Bulgaria. San Francisco is conveniently located just 11.8 mi from San Francisco’s city center.

  • How long is the flight from Bulgaria to San Francisco?

    Airlines like Turkish Airlines and Austrian Airlines fly from Bulgaria to San Francisco in about 34h 45m. The time it takes to get you to your destination can typically vary by up to 4h 54m. Bulgaria and San Francisco are separated by a distance of 6481 mi. Both multi-stop and nonstop flights can be found to your destination and back.

  • What are the cheapest airlines to fly from Bulgaria to San Francisco one-way?

    $702 is the cheapest one-way deal found within the past few days, from Turkish Airlines. You may also be able to find cheap deals on Lufthansa and United Airlines, with prices starting from $759 and $799, respectively.

  • Can I find deals for flights from Bulgaria to San Francisco that include hotel bookings?

    Yes. In addition to deals on Bulgaria to San Francisco flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Bulgaria to San Francisco?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Bulgaria to San Francisco.

  • Can I find deals for business class flights from Bulgaria to San Francisco?

    Yes. Cheapflights offers flight deals from Bulgaria to San Francisco 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 Bulgaria to San Francisco?

    Currently, June is the cheapest month in which you can book a flight from Bulgaria to San Francisco (average of $462). Flying from Bulgaria to San Francisco in August is currently the most expensive (average of $951). 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

Traveling to a place near San Francisco?

Book flights to San Francisco if you plan to visit one of these locations
Roseville
South San Francisco
Santa Cruz
Livermore
Turlock
Manteca
Watsonville
Sunnyvale
Santa Clara
San Bruno
Daly City
Redwood City
Vallejo
Hollister
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Davis
San Ramon
Burlingame

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Top 3 airlines flying from Bulgaria to San Francisco

Discover the top 3 airlines that operate flights from Bulgaria to San Francisco. 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 4, 2025.
AirlineCheapestAverageFlexibilityOn-time
LufthansaCheapest$712Average$884FlexibilityNo cancel feeOn-time76%
Turkish AirlinesCheapest$736Average$878FlexibilityNo cancel feeOn-time77%
United AirlinesCheapest$813Average$951FlexibilityNo cancel feeOn-time69%

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