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$256+ Cheap flights from Fremont, CA 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 10/9. Fares are subject to change and may not be available on all flights or dates of travel.
SFO — SOF
Aug 5 — Aug 121
Tue 8/5
Tue 8/12
1 adult, Economy
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Cheap flight deals from Fremont to Bulgaria

Keep the following information in mind while searching for Fremont to Bulgaria flight deals. Data was last updated July 31, 2025.

Round-trip from

$553
(Justfly.com)

One-way from

$256
(Kiwi.com)

Popular in

June

Cheapest in

January

Average price

$1,092
From Fremont to Bulgaria
Search Deals
One-way flight from Fremont to Bulgaria
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Highest demand for flights based on searches. 28% potential increase in price ($347 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 July 2025
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Find flight deals from Fremont to Bulgaria

Cheapest flights from Fremont to Bulgaria
Explore the most affordable flight options available from Fremont to Bulgaria. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 31, 2025.

This Justfly.com deal was found by Cheapflights users on 7/30. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/116:45 pmSFO - SOF
1 stop27h 50mTurkish Airlines
Tue 8/263:35 pmSOF - SFO
1 stop29h 00mTurkish Airlines
Deal found 7/30$553
This Trip.com deal was found by Cheapflights users on 7/31. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/296:00 pmSFO - SOF
2 stops46h 30mMultiple Airlines
Wed 11/128:55 pmSOF - SFO
2 stops51h 40mMultiple Airlines
Deal found 7/31$589
This lol.travel deal was found by Cheapflights users on 7/30. 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 lol.travel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/119:05 pmSFO - SOF
1 stop15h 55mUnited Airlines
Tue 8/262:00 pmSOF - SFO
1 stop15h 50mUnited Airlines
Deal found 7/30$590
This Ovago deal was found by Cheapflights users on 7/31. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/18:40 pmSFO - SOF
1 stop37h 30mBritish Airways
Mon 12/155:25 pmSOF - SFO
1 stop35h 20mBritish Airways
Deal found 7/31$592
This Travelocity deal was found by Cheapflights users on 7/30. 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 Travelocity is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/2811:11 amSFO - SOF
2 stops22h 09mAir Canada
Tue 11/116:00 amSOF - SFO
2 stops25h 22mAir Canada
Deal found 7/30$600
This American Airlines deal was found by Cheapflights users on 7/31. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/111:50 pmSFO - SOF
2 stops34h 20mAmerican Airlines
Mon 12/155:25 pmSOF - SFO
2 stops35h 24mAmerican Airlines
Deal found 7/31$610
This Kiwi.com deal was found by Cheapflights users on 7/30. 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.
Sun 11/302:40 pmSFO - SOF
1 stop17h 25mLufthansa
Sun 12/141:55 pmSOF - SFO
1 stop15h 40mLufthansa
Deal found 7/30$614
This Austrian Airlines deal was found by Cheapflights users on 7/30. 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 Austrian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/19:40 pmSFO - VAR
2 stops31h 35mAustrian Airlines
Mon 12/84:00 pmVAR - SFO
2 stops39h 34mAustrian Airlines
Deal found 7/30$647
This FlightHub deal was found by Cheapflights users on 7/30. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/16:50 pmSFO - VAR
1 stop28h 45mTurkish Airlines
Tue 12/910:25 amVAR - SFO
1 stop16h 20mTurkish Airlines
Deal found 7/30$653
This Lufthansa deal was found by Cheapflights users on 7/30. 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 Lufthansa is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/309:40 pmSFO - VAR
2 stops31h 35mLufthansa
Tue 12/94:00 pmVAR - SFO
2 stops30h 40mLufthansa
Deal found 7/30$658
This Austrian Airlines deal was found by Cheapflights users on 7/30. 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 Austrian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/137:00 amSFO - BOJ
2 stops19h 20mAustrian Airlines
Sat 9/204:00 pmBOJ - SFO
2 stops30h 40mAustrian Airlines
Deal found 7/30$1,189
This Justfly.com deal was found by Cheapflights users on 7/30. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/309:05 pmSFO - VAR
1 stop25h 55mMultiple Airlines
Sun 8/310:20 amVAR - SFO
1 stop15h 50mMultiple Airlines
Deal found 7/30$1,487

Cheapflights Fare Finder

 
Customize your flight search to find flights from Fremont 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 July 31, 2025.
Use the filters below to find and compare flights from Fremont to Bulgaria that are best for you.

Fly from

Fremont

Fly to

Bulgaria

Route

Depart

Return

Price

San FranciscoSofia

SFO - SOF

SFOSOF

San Francisco

Mon 8/11

6:45 pm-8:35 am

1 stop27h 50m

Sofia

Tue 8/26

3:35 pm-10:35 am

1 stop29h 00m

$553

San FranciscoSofia

SFO - SOF

SFOSOF

San Francisco

Wed 10/29

6:00 pm-1:30 am

2 stops46h 30m

Sofia

Wed 11/12

8:55 pm-2:35 pm

2 stops51h 40m

$589

San FranciscoSofia

SFO - SOF

SFOSOF

San Francisco

Mon 8/11

9:05 pm-11:00 pm

1 stop15h 55m

Sofia

Tue 8/26

2:00 pm-7:50 pm

1 stop15h 50m

$590

San FranciscoSofia

SFO - SOF

SFOSOF

San Francisco

Mon 12/1

8:40 pm-8:10 pm

1 stop37h 30m

Sofia

Mon 12/15

5:25 pm-6:45 pm

1 stop35h 20m

$592

San FranciscoSofia

SFO - SOF

SFOSOF

San Francisco

Tue 10/28

11:11 am-6:20 pm

2 stops22h 09m

Sofia

Tue 11/11

6:00 am-9:22 pm

2 stops25h 22m

$600

San FranciscoSofia

SFO - SOF

SFOSOF

San Francisco

Mon 12/1

11:50 pm-8:10 pm

2 stops34h 20m

Sofia

Mon 12/15

5:25 pm-6:49 pm

2 stops35h 24m

$610

San FranciscoSofia

SFO - SOF

SFOSOF

San Francisco

Sun 11/30

2:40 pm-6:05 pm

1 stop17h 25m

Sofia

Sun 12/14

1:55 pm-7:35 pm

1 stop15h 40m

$614

San FranciscoVarna

SFO - VAR

SFOVAR

San Francisco

Wed 1/7

2:40 pm-5:20 pm

1 stop16h 40m

Varna

Thu 1/15

6:05 pm-12:40 pm

1 stop28h 35m

$627

San FranciscoVarna

SFO - VAR

SFOVAR

San Francisco

Tue 1/6

12:00 pm-3:15 pm

2 stops41h 15m

Varna

Wed 1/14

4:00 pm-8:25 pm

2 stops38h 25m

$634

San FranciscoVarna

SFO - VAR

SFOVAR

San Francisco

Mon 12/1

6:50 pm-9:35 am

1 stop28h 45m

Varna

Tue 12/9

10:25 am-4:45 pm

1 stop16h 20m

$653

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/30

Showing 1-10 of 15 results
1
2

Best time to book a flight from Fremont to Bulgaria

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

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

Currently, November is the cheapest month in which you can book a flight from Fremont to Bulgaria (average of $632). Flying from Fremont to Bulgaria in June is currently the most expensive (average of $1,187). 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 FR8 to BG?

Find hourly flight availability from Fremont 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 July 31, 2025.

When flying from Fremont 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 July 31, 2025.
Read reviews from past customers who have flown Austrian Airlines, SWISS, and United Airlines from Fremont to Bulgaria. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Austrian Airlines
7.6
Good
823 reviews

Crew

8.1

Entertainment

6.8

Boarding

7.6

Comfort

7.3

Food

6.8

Overall

7.6

Reviews

1 / 20
10.0
Excellent

Dominik,Jun 2025

VIE - VNO

Good service and update all information. I feel like i wanna use it again next time
Austrian Airlines
7.6
Good
823 reviews
Austrian Airlines
7.6
Good
823 reviews

Crew

8.1

Entertainment

6.8

Boarding

7.6

Comfort

7.3

Food

6.8

Overall

7.6

Reviews

1 / 20
10.0
Excellent

Dominik,Jun 2025

VIE - VNO

Good service and update all information. I feel like i wanna use it again next time
SWISS
7.5
Good
1,686 reviews
Austrian Airlines
7.6
Good
823 reviews

Crew

8.1

Entertainment

6.8

Boarding

7.6

Comfort

7.3

Food

6.8

Overall

7.6

Reviews

1 / 20
10.0
Excellent

Dominik,Jun 2025

VIE - VNO

Good service and update all information. I feel like i wanna use it again next time
United Airlines
7.4
Good
8,900 reviews
Austrian Airlines
7.6
Good
823 reviews

Crew

8.1

Entertainment

6.8

Boarding

7.6

Comfort

7.3

Food

6.8

Overall

7.6

Reviews

1 / 20
10.0
Excellent

Dominik,Jun 2025

VIE - VNO

Good service and update all information. I feel like i wanna use it again next time
Turkish Airlines
7.3
Good
3,933 reviews
Austrian Airlines
7.6
Good
823 reviews

Crew

8.1

Entertainment

6.8

Boarding

7.6

Comfort

7.3

Food

6.8

Overall

7.6

Reviews

1 / 20
10.0
Excellent

Dominik,Jun 2025

VIE - VNO

Good service and update all information. I feel like i wanna use it again next time
American Airlines
7.2
Good
10,000 reviews
Austrian Airlines
7.6
Good
823 reviews

Crew

8.1

Entertainment

6.8

Boarding

7.6

Comfort

7.3

Food

6.8

Overall

7.6

Reviews

1 / 20
10.0
Excellent

Dominik,Jun 2025

VIE - VNO

Good service and update all information. I feel like i wanna use it again next time

Related info for your journey

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

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

    The cheapest airline one-way is Turkish Airlines, with whom users have recently found tickets for as low as $456. However, be on the lookout for offers from SWISS and United Airlines, as they are both options that can get you from Fremont to Bulgaria for a low price.

  • What are the most popular routes from Fremont to Bulgaria?

    The most popular route from Fremont to Bulgaria is San Francisco - Sofia. You may also consider San Francisco - Varna or San Francisco - Bourgas.

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

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

  • How can I find direct flights from Fremont to Bulgaria?

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

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

    Yes. Cheapflights offers flight deals from Fremont 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 Fremont to Bulgaria?

    Currently, November is the cheapest month in which you can book a flight from Fremont to Bulgaria (average of $632). Flying from Fremont to Bulgaria in June is currently the most expensive (average of $1,187). 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 6 airlines flying from Fremont to Bulgaria

Discover the top 6 airlines that operate flights from Fremont 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 July 31, 2025.
AirlineCheapestAverageFlexibilityOn-time
Turkish AirlinesCheapest$543Average$1,153FlexibilityNo cancel feeOn-time77%
British AirwaysCheapest$578Average$605FlexibilityNo cancel feeOn-time70%
United AirlinesCheapest$627Average$950FlexibilityNo cancel feeOn-time69%
LufthansaCheapest$646Average$1,018FlexibilityNo cancel feeOn-time76%
ITA AirwaysCheapest$652Average$1,154FlexibilityNo cancel feeOn-time81%
Air CanadaCheapest$842Average$1,133FlexibilityNo cancel feeOn-time67%

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