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$351+ Cheap flights from San Francisco (SFO) to Bulgaria

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 9/21. Fares are subject to change and may not be available on all flights or dates of travel.
SFO — SOF
Oct 11 — Oct 181
Sat 10/11
Sat 10/18
1 adult, Economy
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Cheap flight deals from San Francisco to Bulgaria

Keep the following information in mind while searching for San Francisco to Bulgaria flight deals. Data was last updated September 11, 2025.

Round-trip from

$515
(Kiwi.com)

One-way from

$351
(Kiwi.com)

Popular in

June

Cheapest in

January

Average price

$761
From San Francisco to Bulgaria
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One-way flight from San Francisco to Bulgaria
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Highest demand for flights based on searches. 29% potential increase in price ($351 potential increase over avg. RT price).
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Cheapest flight prices on average. 7% potential price decrease ($63 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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Find flight deals from San Francisco to Bulgaria

Cheapest flights from San Francisco to Bulgaria
Explore the most affordable flight options available from San Francisco to Bulgaria. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 11, 2025.

This Kiwi.com deal was found by Cheapflights users on 9/10. 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.
Tue 12/99:40 pmSFO - SOF
1 stop15h 05mLufthansa
Tue 12/236:00 amSOF - SFO
1 stop16h 40mLufthansa
Deal found 9/10$515
This Kiwi.com deal was found by Cheapflights users on 9/9. 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 12/89:40 pmSFO - SOF
1 stop15h 05mMultiple Airlines
Mon 12/226:45 pmSOF - SFO
2 stops27h 55mMultiple Airlines
Deal found 9/9$522
This Gotogate deal was found by Cheapflights users on 9/9. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/298:30 amSFO - SOF
2 stops21h 45mMultiple Airlines
Wed 11/122:25 pmSOF - SFO
2 stops30h 29mMultiple Airlines
Deal found 9/9$533
This Kiwi.com deal was found by Cheapflights users on 9/9. 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.
Wed 10/2910:40 pmSFO - SOF
1 stop15h 05mLufthansa
Wed 11/122:00 pmSOF - SFO
1 stop15h 35mLufthansa
Deal found 9/9$534
This Mytrip deal was found by Cheapflights users on 9/9. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/38:25 amSFO - SOF
2 stops18h 50mMultiple Airlines
Mon 11/173:00 pmSOF - SFO
1 stop35h 30mMultiple Airlines
Deal found 9/9$540
This CrystalTravel deal was found by Cheapflights users on 9/8. 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 CrystalTravel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/222:40 pmSFO - SOF
1 stop17h 10mLufthansa
Fri 11/76:10 amSOF - SFO
1 stop16h 30mLufthansa
Deal found 9/8$545
This FlightHub deal was found by Cheapflights users on 9/10. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/97:25 pmSFO - SOF
1 stop33h 50mMultiple Airlines
Tue 12/236:00 amSOF - SFO
1 stop16h 40mMultiple Airlines
Deal found 9/10$546
This British Airways deal was found by Cheapflights users on 9/9. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/38:40 pmSFO - SOF
1 stop37h 30mBritish Airways
Mon 11/175:25 pmSOF - SFO
1 stop35h 20mBritish Airways
Deal found 9/9$548
This Priceline deal was found by Cheapflights users on 9/11. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/108:25 amSFO - SOF
2 stops23h 55mMultiple Airlines
Wed 12/246:10 amSOF - SFO
2 stops25h 12mMultiple Airlines
Deal found 9/11$551
This FlightHub deal was found by Cheapflights users on 9/11. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/102:50 pmSFO - SOF
2 stops17h 30mLufthansa
Wed 12/246:10 amSOF - SFO
1 stop16h 30mLufthansa
Deal found 9/11$553
This Expedia deal was found by Cheapflights users on 9/8. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/228:31 amSFO - SOF
2 stops18h 44mAir Canada
Fri 11/76:10 amSOF - SFO
2 stops25h 12mAir Canada
Deal found 9/8$554
This KAYAK deal was found by Cheapflights users on 9/9. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/162:40 pmSFO - VAR
2 stops20h 05mLufthansa
Thu 10/169:20 amVAR - SFO
2 stops25h 35mLufthansa
Deal found 9/9$704

Cheapflights Fare Finder

 
Customize your flight search to find flights from San Francisco to Bulgaria 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 September 11, 2025.
Use the filters below to find and compare flights from San Francisco to Bulgaria that are best for you.

Fly from

San Francisco

Fly to

Bulgaria

Route

Depart

Return

Price

San FranciscoSofia

SFO - SOF

SFOSOF

San Francisco

Wed 10/29

10:40 pm-10:45 pm

1 stop15h 05m

Sofia

Wed 11/12

2:00 pm-7:35 pm

1 stop15h 35m

$534

San FranciscoSofia

SFO - SOF

SFOSOF

San Francisco

Mon 11/3

8:40 pm-8:10 pm

1 stop37h 30m

Sofia

Mon 11/17

5:25 pm-6:45 pm

1 stop35h 20m

$548

San FranciscoSofia

SFO - SOF

SFOSOF

San Francisco

Tue 12/9

2:50 pm-6:20 pm

2 stops17h 30m

Sofia

Tue 12/23

6:00 am-12:40 pm

1 stop16h 40m

$550

San FranciscoSofia

SFO - SOF

SFOSOF

San Francisco

Wed 12/10

2:40 pm-10:45 pm

1 stop22h 05m

Sofia

Wed 12/24

6:10 am-12:40 pm

1 stop16h 30m

$550

San FranciscoSofia

SFO - SOF

SFOSOF

San Francisco

Sun 1/18

1:30 pm-6:20 pm

1 stop18h 50m

Sofia

Wed 4/15

1:50 pm-8:00 pm

1 stop16h 10m

$552

San FranciscoSofia

SFO - SOF

SFOSOF

San Francisco

Mon 1/12

1:30 pm-10:45 pm

1 stop23h 15m

Sofia

Thu 4/16

6:15 am-4:05 pm

1 stop19h 50m

$552

San FranciscoSofia

SFO - SOF

SFOSOF

San Francisco

Tue 1/13

9:40 pm-10:45 pm

1 stop15h 05m

Sofia

Wed 4/15

1:50 pm-8:00 pm

1 stop16h 10m

$552

San FranciscoSofia

SFO - SOF

SFOSOF

San Francisco

Wed 1/14

9:40 pm-10:45 pm

1 stop15h 05m

Sofia

Wed 4/15

1:50 pm-8:00 pm

1 stop16h 10m

$552

San FranciscoSofia

SFO - SOF

SFOSOF

San Francisco

Tue 3/10

2:30 pm-10:45 pm

1 stop23h 15m

Sofia

Tue 3/24

6:00 am-9:22 pm

2 stops24h 22m

$552

San FranciscoSofia

SFO - SOF

SFOSOF

San Francisco

Sun 1/18

1:30 pm-6:20 pm

1 stop18h 50m

Sofia

Tue 4/14

6:15 am-12:40 pm

1 stop16h 25m

$553

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/9

Showing 1-10 of 16 results
1
2

Best time to book a flight from San Francisco to Bulgaria

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

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

Currently, November is the cheapest month in which you can book a flight from San Francisco to Bulgaria (average of $632). Flying from San Francisco to Bulgaria in June is currently the most expensive (average of $1,185). 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 SFO to BG?

Find hourly flight availability from San Francisco to Bulgaria. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated September 11, 2025.

When flying from San Francisco to Bulgaria, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Reviews of airlines servicing Bulgaria

Get insights into the airlines that provide service to Bulgaria. 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 Bulgaria. Reviews last updated September 11, 2025.
Get a feel of what it's like to fly with United Airlines, Turkish Airlines, and Air Canada from San Francisco to Bulgaria by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
8,937 reviews

Overall

7.4

Comfort

7.3

Boarding

7.7

Crew

8.1

Food

6.6

Entertainment

7.1

Reviews

1 / 20
4.0
Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??
United Airlines
7.4
Good
8,937 reviews
United Airlines
7.4
Good
8,937 reviews

Overall

7.4

Comfort

7.3

Boarding

7.7

Crew

8.1

Food

6.6

Entertainment

7.1

Reviews

1 / 20
4.0
Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??
Turkish Airlines
7.3
Good
3,968 reviews
United Airlines
7.4
Good
8,937 reviews

Overall

7.4

Comfort

7.3

Boarding

7.7

Crew

8.1

Food

6.6

Entertainment

7.1

Reviews

1 / 20
4.0
Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??
Air Canada
7.1
Good
10,000 reviews
United Airlines
7.4
Good
8,937 reviews

Overall

7.4

Comfort

7.3

Boarding

7.7

Crew

8.1

Food

6.6

Entertainment

7.1

Reviews

1 / 20
4.0
Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??
Lufthansa
6.8
Okay
7,409 reviews
United Airlines
7.4
Good
8,937 reviews

Overall

7.4

Comfort

7.3

Boarding

7.7

Crew

8.1

Food

6.6

Entertainment

7.1

Reviews

1 / 20
4.0
Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??
ITA Airways
6.7
Okay
1,036 reviews
United Airlines
7.4
Good
8,937 reviews

Overall

7.4

Comfort

7.3

Boarding

7.7

Crew

8.1

Food

6.6

Entertainment

7.1

Reviews

1 / 20
4.0
Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??

Related info for your journey

Find useful and relevant information for your journey from San Francisco to Bulgaria. 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 from for flights from San Francisco to Bulgaria?

    San Francisco (SFO), located 11.8 mi from the city center, is the airport you fly out of when you book flights from San Francisco to Bulgaria.

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

    Departing from San Francisco to Bulgaria will take you 15h 05m. San Francisco and Bulgaria are separated by a distance of 6481 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

  • What are the most popular routes from San Francisco to Bulgaria?

    The most popular flight routes from San Francisco to Bulgaria are San Francisco - Sofia, San Francisco - Varna and San Francisco - Bourgas.

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

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

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

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

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

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

    Currently, November is the cheapest month in which you can book a flight from San Francisco to Bulgaria (average of $632). Flying from San Francisco to Bulgaria in June is currently the most expensive (average of $1,185). 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

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Alternative routes for San Francisco to Bulgaria

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Top 5 airlines flying from San Francisco to Bulgaria

Discover the top 5 airlines that operate flights from San Francisco to Bulgaria. 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 September 11, 2025.
AirlineCheapestAverageFlexibilityOn-time
Turkish AirlinesCheapest$542Average$1,197FlexibilityNo cancel feeOn-time77%
United AirlinesCheapest$627Average$967FlexibilityNo cancel feeOn-time69%
LufthansaCheapest$639Average$1,007FlexibilityNo cancel feeOn-time76%
ITA AirwaysCheapest$652Average$1,154FlexibilityNo cancel feeOn-time81%
Air CanadaCheapest$1,023Average$1,138FlexibilityNo cancel feeOn-time67%

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