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$352+ 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 9/15. Fares are subject to change and may not be available on all flights or dates of travel.
SFO — SOF
Jun 17 — Jun 241
Tue 6/17
Tue 6/24
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 June 12, 2025.

Round-trip from

$643
(Turkish Airlines)

One-way from

$359
(Kiwi.com)

Popular in

June

Cheapest in

January

Average price

$1,524
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 ($365 potential increase over avg. RT price).
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Cheapest flight prices on average. 7% potential price decrease ($61 potential savings vs. average RT price).
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Average for round-trip flights in June 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 June 12, 2025.

This Turkish Airlines deal was found by Cheapflights users on 6/12. 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 Turkish Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/46:45 pmSFO - SOF
1 stop27h 50mTurkish Airlines
Tue 8/199:25 amSOF - SFO
1 stop35h 10mTurkish Airlines
Deal found 6/12$643
This Gotogate deal was found by Cheapflights users on 6/10. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/811:40 amSFO - SOF
2 stops20h 10mMultiple Airlines
Mon 9/223:30 pmSOF - SFO
1 stop34h 40mMultiple Airlines
Deal found 6/10$644
This United Airlines deal was found by Cheapflights users on 6/12. 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.
Wed 7/309:05 pmSFO - SOF
1 stop15h 55mUnited Airlines
Wed 8/206:15 amSOF - SFO
2 stops23h 32mUnited Airlines
Deal found 6/12$647
This Cheapflightsfares deal was found by Cheapflights users on 6/10. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/284:31 pmSFO - SOF
2 stops20h 19mLufthansa
Thu 8/216:15 amSOF - SFO
1 stop16h 25mLufthansa
Deal found 6/10$659
This CheapOair deal was found by Cheapflights users on 6/10. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/3111:45 pmSFO - SOF
2 stops27h 15mAir Canada
Wed 10/16:15 amSOF - SFO
2 stops21h 24mAir Canada
Deal found 6/10$682
This SWISS deal was found by Cheapflights users on 6/12. 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 SWISS is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/87:30 pmSFO - SOF
1 stop28h 35mSWISS
Mon 10/63:30 pmSOF - SFO
2 stops57h 58mSWISS
Deal found 6/12$684
This SWISS deal was found by Cheapflights users on 6/12. 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 SWISS is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/47:30 pmSFO - VAR
1 stop14h 40mSWISS
Tue 8/129:00 pmVAR - SFO
1 stop29h 10mSWISS
Deal found 6/12$685
This Cheapflightsfares deal was found by Cheapflights users on 6/12. 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.
Mon 7/289:05 pmSFO - SOF
2 stops16h 50mAustrian Airlines
Thu 8/216:55 pmSOF - SFO
2 stops27h 45mAustrian Airlines
Deal found 6/12$688
This United deal was found by Cheapflights users on 6/12. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/312:20 amSFO - VAR
2 stops28h 35mMultiple Airlines
Tue 8/129:00 pmVAR - SFO
1 stop29h 10mMultiple Airlines
Deal found 6/12$698
This Expedia deal was found by Cheapflights users on 6/12. 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.
Tue 8/197:00 amSFO - VAR
2 stops22h 15mAustrian Airlines
Tue 9/94:00 pmVAR - SFO
2 stops37h 57mAustrian Airlines
Deal found 6/12$711
This British Airways deal was found by Cheapflights users on 6/11. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/1210:44 pmSFO - SOF
2 stops35h 36mBritish Airways
Sun 9/289:10 pmSOF - SFO
1 stop26h 40mBritish Airways
Deal found 6/11$761
This FlightHub deal was found by Cheapflights users on 6/12. 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 8/196:45 pmSFO - VAR
1 stop16h 35mTurkish Airlines
Tue 9/99:35 amVAR - SFO
1 stop17h 05mTurkish Airlines
Deal found 6/12$762

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 June 12, 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

Mon 8/4

6:45 pm-8:35 am

1 stop27h 50m

Sofia

Tue 8/19

9:25 am-10:35 am

1 stop35h 10m

$643

San FranciscoSofia

SFO - SOF

SFOSOF

San Francisco

Mon 9/8

11:40 am-5:50 pm

2 stops20h 10m

Sofia

Mon 9/22

3:30 pm-4:10 pm

1 stop34h 40m

$644

San FranciscoSofia

SFO - SOF

SFOSOF

San Francisco

Wed 7/30

9:05 pm-11:00 pm

1 stop15h 55m

Sofia

Wed 8/20

6:15 am-7:47 pm

2 stops23h 32m

$647

San FranciscoSofia

SFO - SOF

SFOSOF

San Francisco

Mon 7/28

4:31 pm-10:50 pm

2 stops20h 19m

Sofia

Thu 8/21

6:15 am-12:40 pm

1 stop16h 25m

$659

San FranciscoSofia

SFO - SOF

SFOSOF

San Francisco

Sun 8/31

11:45 pm-1:00 pm

2 stops27h 15m

Sofia

Wed 10/1

6:15 am-5:39 pm

2 stops21h 24m

$682

San FranciscoSofia

SFO - SOF

SFOSOF

San Francisco

Mon 9/8

7:30 pm-10:05 am

1 stop28h 35m

Sofia

Mon 10/6

3:30 pm-3:28 pm

2 stops57h 58m

$684

San FranciscoVarna

SFO - VAR

SFOVAR

San Francisco

Mon 8/4

7:30 pm-8:10 pm

1 stop14h 40m

Varna

Tue 8/12

9:00 pm-4:10 pm

1 stop29h 10m

$685

San FranciscoSofia

SFO - SOF

SFOSOF

San Francisco

Mon 7/28

9:05 pm-11:55 pm

2 stops16h 50m

Sofia

Thu 8/21

6:55 pm-12:40 pm

2 stops27h 45m

$688

San FranciscoVarna

SFO - VAR

SFOVAR

San Francisco

Sun 8/3

12:20 am-2:55 pm

2 stops28h 35m

Varna

Tue 8/12

9:00 pm-4:10 pm

1 stop29h 10m

$698

San FranciscoVarna

SFO - VAR

SFOVAR

San Francisco

Tue 8/19

7:00 am-3:15 pm

2 stops22h 15m

Varna

Tue 9/9

4:00 pm-7:57 pm

2 stops37h 57m

$711

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/12

Showing 1-10 of 28 results
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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, 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 $1,203). 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 June 12, 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.

Rainfall in Bulgaria by month

Plan your trip to Bulgaria by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Bulgaria ranges from 1.2 - 2.8 inches per month. June is typically the wettest month, when rainfall can reach 2.8 in. January is typically the driest time to visit Bulgaria when rainfall is around 1.2 in.

Temperature in Bulgaria by month

Plan your trip to Bulgaria by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Bulgaria, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 68.0 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 30.2 F).

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 June 12, 2025.
Read reviews from past customers who have flown KLM, Austrian Airlines and SWISS from San Francisco to Bulgaria. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
KLM
7.8
Good
1,358 reviews

Food

7.2

Entertainment

7.1

Boarding

7.8

Overall

7.8

Comfort

7.7

Crew

8.4

Reviews

1 / 20
8.0
Excellent

Allan,Jun 2025

YYZ - AMS

I always enjoy flying KLM. Service is attentive, friendly and professional. The seat, when fully reclined is a little hard; some kind of mattress or topper would be helpful here. The dinner was really not very good …. “Meatless meatballs” tasted quite peculiar. Breakfast which consisted of an egg white omelette in flour tortilla was also rather tasteless.
KLM
7.8
Good
1,358 reviews
KLM
7.8
Good
1,358 reviews

Food

7.2

Entertainment

7.1

Boarding

7.8

Overall

7.8

Comfort

7.7

Crew

8.4

Reviews

1 / 20
8.0
Excellent

Allan,Jun 2025

YYZ - AMS

I always enjoy flying KLM. Service is attentive, friendly and professional. The seat, when fully reclined is a little hard; some kind of mattress or topper would be helpful here. The dinner was really not very good …. “Meatless meatballs” tasted quite peculiar. Breakfast which consisted of an egg white omelette in flour tortilla was also rather tasteless.
Austrian Airlines
7.6
Good
802 reviews
KLM
7.8
Good
1,358 reviews

Food

7.2

Entertainment

7.1

Boarding

7.8

Overall

7.8

Comfort

7.7

Crew

8.4

Reviews

1 / 20
8.0
Excellent

Allan,Jun 2025

YYZ - AMS

I always enjoy flying KLM. Service is attentive, friendly and professional. The seat, when fully reclined is a little hard; some kind of mattress or topper would be helpful here. The dinner was really not very good …. “Meatless meatballs” tasted quite peculiar. Breakfast which consisted of an egg white omelette in flour tortilla was also rather tasteless.
SWISS
7.5
Good
1,623 reviews
KLM
7.8
Good
1,358 reviews

Food

7.2

Entertainment

7.1

Boarding

7.8

Overall

7.8

Comfort

7.7

Crew

8.4

Reviews

1 / 20
8.0
Excellent

Allan,Jun 2025

YYZ - AMS

I always enjoy flying KLM. Service is attentive, friendly and professional. The seat, when fully reclined is a little hard; some kind of mattress or topper would be helpful here. The dinner was really not very good …. “Meatless meatballs” tasted quite peculiar. Breakfast which consisted of an egg white omelette in flour tortilla was also rather tasteless.
United Airlines
7.4
Good
8,790 reviews
KLM
7.8
Good
1,358 reviews

Food

7.2

Entertainment

7.1

Boarding

7.8

Overall

7.8

Comfort

7.7

Crew

8.4

Reviews

1 / 20
8.0
Excellent

Allan,Jun 2025

YYZ - AMS

I always enjoy flying KLM. Service is attentive, friendly and professional. The seat, when fully reclined is a little hard; some kind of mattress or topper would be helpful here. The dinner was really not very good …. “Meatless meatballs” tasted quite peculiar. Breakfast which consisted of an egg white omelette in flour tortilla was also rather tasteless.
Turkish Airlines
7.3
Good
3,848 reviews
KLM
7.8
Good
1,358 reviews

Food

7.2

Entertainment

7.1

Boarding

7.8

Overall

7.8

Comfort

7.7

Crew

8.4

Reviews

1 / 20
8.0
Excellent

Allan,Jun 2025

YYZ - AMS

I always enjoy flying KLM. Service is attentive, friendly and professional. The seat, when fully reclined is a little hard; some kind of mattress or topper would be helpful here. The dinner was really not very good …. “Meatless meatballs” tasted quite peculiar. Breakfast which consisted of an egg white omelette in flour tortilla was also rather tasteless.

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.

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

    The cheapest airline one-way is United Airlines, with whom users have recently found tickets for as low as $474. However, be on the lookout for offers from Austrian Airlines and Aer Lingus, as they are both options that can get you from San Francisco to Bulgaria for a low price.

  • 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 $1,203). 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.

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Top 7 airlines flying from San Francisco to Bulgaria

Discover the top 7 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 June 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
SWISSCheapest$560Average$1,126FlexibilityNo cancel feeOn-time79%
British AirwaysCheapest$578Average$731FlexibilityNo cancel feeOn-time70%
Turkish AirlinesCheapest$583Average$1,166FlexibilityNo cancel feeOn-time77%
United AirlinesCheapest$627Average$1,039FlexibilityNo cancel feeOn-time69%
ITA AirwaysCheapest$651Average$1,543FlexibilityNo cancel feeOn-time81%
LufthansaCheapest$655Average$1,055FlexibilityNo cancel feeOn-time76%
Air CanadaCheapest$842Average$1,133FlexibilityNo cancel feeOn-time67%

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