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$328+ 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 1/10. Fares are subject to change and may not be available on all flights or dates of travel.
SFO — SOF
nov. 29 — dic. 61
sáb. 11/29
sáb. 12/6
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 octubre 30, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$481
(Kiwi.com)

One-way from

$328
(Kiwi.com)

Popular in

June

Cheapest in

January

Average price

$625
Provider with most accurate pricing for San Francisco-Sofia flight deals.
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Provider most trusted by Cheapflights users for San Francisco-Sofia flights.
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From San Francisco to Bulgaria
Search Deals
One-way flight from San Francisco to Bulgaria
Search Deals
Highest demand for flights based on searches. 29% potential increase in price ($354 potential increase over avg. RT price).
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Cheapest flight prices on average. 8% potential price decrease ($64 potential savings vs. average RT price).
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Average for round-trip flights in October 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 octubre 30, 2025.

This Kiwi.com deal was found by Cheapflights users on 10/30. 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.
jue. 12/119:40 pmSFO - SOF
1 stop15h 05mLufthansa
mié. 12/246:10 amSOF - SFO
1 stop16h 30mLufthansa
Deal found 10/30$481
This Kiwi.com deal was found by Cheapflights users on 10/29. 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.
jue. 12/119:40 pmSFO - SOF
1 stop15h 05mLufthansa
mar. 12/236:00 amSOF - SFO
1 stop16h 40mLufthansa
Deal found 10/29$486
This Kiwi.com deal was found by Cheapflights users on 10/30. 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.
dom. 11/309:40 pmSFO - SOF
1 stop15h 05mLufthansa
dom. 12/142:00 pmSOF - SFO
1 stop15h 35mLufthansa
Deal found 10/30$487
This Kiwi.com deal was found by Cheapflights users on 10/30. 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.
jue. 12/119:40 pmSFO - SOF
2 stops16h 15mMultiple Airlines
mié. 12/246:10 amSOF - SFO
1 stop16h 30mMultiple Airlines
Deal found 10/30$495
This Kiwi.com deal was found by Cheapflights users on 10/30. 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.
dom. 11/309:40 pmSFO - SOF
2 stops16h 15mMultiple Airlines
dom. 12/142:00 pmSOF - SFO
1 stop15h 35mMultiple Airlines
Deal found 10/30$500
This CrystalTravel deal was found by Cheapflights users on 10/28. 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.
jue. 11/279:40 pmSFO - SOF
1 stop15h 05mLufthansa
dom. 12/72:00 pmSOF - SFO
1 stop15h 35mLufthansa
Deal found 10/28$502
This Kiwi.com deal was found by Cheapflights users on 10/29. 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.
jue. 12/119:40 pmSFO - SOF
2 stops16h 15mMultiple Airlines
lun. 12/223:00 pmSOF - SFO
1 stop35h 30mMultiple Airlines
Deal found 10/29$520
This Cheapflightsfares deal was found by Cheapflights users on 10/28. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 11/269:40 pmSFO - SOF
1 stop15h 05mLufthansa
mié. 12/32:00 pmSOF - SFO
1 stop15h 35mLufthansa
Deal found 10/28$521
This Mytrip deal was found by Cheapflights users on 10/29. 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.
lun. 12/19:40 pmSFO - VAR
2 stops31h 35mAustrian Airlines
lun. 12/84:00 pmVAR - SFO
2 stops30h 40mAustrian Airlines
Deal found 10/29$576
This FlightHub deal was found by Cheapflights users on 10/29. 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.
lun. 12/16:50 pmSFO - VAR
1 stop28h 20mTurkish Airlines
lun. 12/89:25 pmVAR - SFO
1 stop23h 40mTurkish Airlines
Deal found 10/29$609
This Mytrip deal was found by Cheapflights users on 10/29. 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.
lun. 12/17:25 pmSFO - VAR
3 stops33h 50mMultiple Airlines
lun. 12/89:25 pmVAR - SFO
3 stops32h 10mMultiple Airlines
Deal found 10/29$998

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 octubre 30, 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

jue. 12/11

9:40 pm-10:45 pm

1 stop15h 05m

Sofia

mié. 12/24

2:25 pm-8:10 pm

1 stop15h 45m

$527

San FranciscoSofia

SFO - SOF

SFOSOF

San Francisco

lun. 1/26

6:45 am-1:15 pm

2 stops20h 30m

Sofia

lun. 2/9

2:20 pm-8:10 pm

1 stop15h 50m

$533

San FranciscoSofia

SFO - SOF

SFOSOF

San Francisco

vie. 1/30

9:10 am-6:20 pm

2 stops23h 10m

Sofia

vie. 2/13

6:05 am-8:34 pm

2 stops24h 29m

$537

San FranciscoSofia

SFO - SOF

SFOSOF

San Francisco

lun. 1/26

12:43 am-6:20 pm

3 stops31h 37m

Sofia

mar. 2/10

2:00 pm-6:55 pm

1 stop14h 55m

$537

San FranciscoSofia

SFO - SOF

SFOSOF

San Francisco

jue. 12/11

9:40 pm-10:45 pm

1 stop15h 05m

Sofia

lun. 12/22

6:10 am-7:42 pm

2 stops23h 32m

$538

San FranciscoSofia

SFO - SOF

SFOSOF

San Francisco

jue. 1/29

8:25 am-1:50 pm

2 stops19h 25m

Sofia

jue. 2/12

6:00 am-12:40 pm

1 stop16h 40m

$547

San FranciscoSofia

SFO - SOF

SFOSOF

San Francisco

dom. 3/29

6:45 pm-3:00 pm

1 stop34h 15m

Sofia

dom. 4/12

9:35 am-10:45 am

1 stop35h 10m

$573

San FranciscoSofia

SFO - SOF

SFOSOF

San Francisco

mar. 4/28

9:05 pm-11:00 pm

1 stop15h 55m

Sofia

mar. 5/12

6:15 am-12:40 pm

1 stop16h 25m

$574

San FranciscoSofia

SFO - SOF

SFOSOF

San Francisco

lun. 1/26

12:43 am-1:45 pm

3 stops27h 02m

Sofia

mar. 2/10

6:45 pm-3:55 pm

2 stops31h 10m

$574

San FranciscoSofia

SFO - SOF

SFOSOF

San Francisco

jue. 12/11

1:50 pm-10:45 pm

2 stops46h 55m

Sofia

mié. 12/24

6:10 am-7:42 pm

2 stops23h 32m

$574

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/30

Showing 1-10 of 21 results
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2
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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, August is the cheapest month in which you can book a flight from San Francisco to Bulgaria (average of $439). Flying from San Francisco to Bulgaria in June is currently the most expensive (average of $827). 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 octubre 30, 2025.

One of the essential ways to save on airfare from San Francisco to Bulgaria is to remain as flexible as possible. Flights that are in the evening tend to be the most expensive. A flight at noon could potentially save you up to 22% on airfare.

What is the cheapest day to fly from San Francisco to Bulgaria?

Use this chart to determine the cheapest time to fly round-trip from San Francisco to Bulgaria. Price data was last updated on December 16, 2024.

Travelers seeking maximum savings on their San Francisco to Bulgaria flight should consider departing on Thursday mornings when fares are most often at their lowest. Saturday mornings flights should be avoided if possible as fares are typically the most expensive at this time.

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 octubre 30, 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
8,996 reviews

Food

6.6

Crew

8.1

Comfort

7.3

Overall

7.4

Boarding

7.7

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
8,996 reviews
United Airlines
7.4
Good
8,996 reviews

Food

6.6

Crew

8.1

Comfort

7.3

Overall

7.4

Boarding

7.7

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
4,033 reviews
United Airlines
7.4
Good
8,996 reviews

Food

6.6

Crew

8.1

Comfort

7.3

Overall

7.4

Boarding

7.7

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
10,383 reviews
United Airlines
7.4
Good
8,996 reviews

Food

6.6

Crew

8.1

Comfort

7.3

Overall

7.4

Boarding

7.7

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
7,542 reviews
United Airlines
7.4
Good
8,996 reviews

Food

6.6

Crew

8.1

Comfort

7.3

Overall

7.4

Boarding

7.7

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
1,078 reviews
United Airlines
7.4
Good
8,996 reviews

Food

6.6

Crew

8.1

Comfort

7.3

Overall

7.4

Boarding

7.7

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, August is the cheapest month in which you can book a flight from San Francisco to Bulgaria (average of $439). Flying from San Francisco to Bulgaria in June is currently the most expensive (average of $827). 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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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 octubre 30, 2025.
AirlineCheapestAverageFlexibilityOn-time
Turkish AirlinesCheapest$543Average$1,184FlexibilityNo cancel feeOn-time77%
LufthansaCheapest$616Average$985FlexibilityNo cancel feeOn-time76%
United AirlinesCheapest$627Average$968FlexibilityNo cancel feeOn-time69%
ITA AirwaysCheapest$652Average$1,155FlexibilityNo cancel feeOn-time81%
Air CanadaCheapest$1,023Average$1,138FlexibilityNo cancel feeOn-time67%

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