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Bulgaria

$328+ 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 1/10. Fares are subject to change and may not be available on all flights or dates of travel.
SFO — SOF
nov 29 — dez 61
sáb 11/29
sáb 12/6
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 outubro 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 Fremont to Bulgaria
Search Deals
One-way flight from Fremont 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 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 outubro 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.
qui 12/119:40 pmSFO - SOF
1 stop15h 05mLufthansa
qua 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.
qui 12/119:40 pmSFO - SOF
1 stop15h 05mLufthansa
ter 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.
qui 12/119:40 pmSFO - SOF
2 stops16h 15mMultiple Airlines
qua 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.
qui 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.
qui 12/119:40 pmSFO - SOF
2 stops16h 15mMultiple Airlines
seg 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.
qua 11/269:40 pmSFO - SOF
1 stop15h 05mLufthansa
qua 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.
seg 12/19:40 pmSFO - VAR
2 stops31h 35mAustrian Airlines
seg 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.
seg 12/16:50 pmSFO - VAR
1 stop28h 20mTurkish Airlines
seg 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.
seg 12/17:25 pmSFO - VAR
3 stops33h 50mMultiple Airlines
seg 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 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 outubro 30, 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

qui 12/11

9:40 pm-10:45 pm

1 stop15h 05m

Sofia

qua 12/24

2:25 pm-8:10 pm

1 stop15h 45m

$527

San FranciscoSofia

SFO - SOF

SFOSOF

San Francisco

seg 1/26

6:45 am-1:15 pm

2 stops20h 30m

Sofia

seg 2/9

2:20 pm-8:10 pm

1 stop15h 50m

$533

San FranciscoSofia

SFO - SOF

SFOSOF

San Francisco

sex 1/30

9:10 am-6:20 pm

2 stops23h 10m

Sofia

sex 2/13

6:05 am-8:34 pm

2 stops24h 29m

$537

San FranciscoSofia

SFO - SOF

SFOSOF

San Francisco

seg 1/26

12:43 am-6:20 pm

3 stops31h 37m

Sofia

ter 2/10

2:00 pm-6:55 pm

1 stop14h 55m

$537

San FranciscoSofia

SFO - SOF

SFOSOF

San Francisco

qui 12/11

9:40 pm-10:45 pm

1 stop15h 05m

Sofia

seg 12/22

6:10 am-7:42 pm

2 stops23h 32m

$538

San FranciscoSofia

SFO - SOF

SFOSOF

San Francisco

qui 1/29

8:25 am-1:50 pm

2 stops19h 25m

Sofia

qui 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

ter 4/28

9:05 pm-11:00 pm

1 stop15h 55m

Sofia

ter 5/12

6:15 am-12:40 pm

1 stop16h 25m

$574

San FranciscoSofia

SFO - SOF

SFOSOF

San Francisco

seg 1/26

12:43 am-1:45 pm

3 stops27h 02m

Sofia

ter 2/10

6:45 pm-3:55 pm

2 stops31h 10m

$574

San FranciscoSofia

SFO - SOF

SFOSOF

San Francisco

qui 12/11

1:50 pm-10:45 pm

2 stops46h 55m

Sofia

qua 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
1
2
3

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, August is the cheapest month in which you can book a flight from Fremont to Bulgaria (average of $439). Flying from Fremont 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 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 outubro 30, 2025.

It’s typically best to fly out from Fremont to Bulgaria in the morning. Doing so could potentially save you 22% on the flight price compared to flying in the evening, which is usually more expensive.

What is the cheapest day to fly from Fremont to Bulgaria?

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

Travelers seeking maximum savings on their Fremont to Bulgaria flight should consider departing on Thursday mornings when fares are most often at their lowest. Friday at noon 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 outubro 30, 2025.
Read reviews from past customers who have flown United Airlines, Turkish Airlines, and Air Canada 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.
United Airlines
7.4
Good
8,996 reviews

Overall

7.4

Boarding

7.7

Comfort

7.3

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

Overall

7.4

Boarding

7.7

Comfort

7.3

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

Overall

7.4

Boarding

7.7

Comfort

7.3

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

Overall

7.4

Boarding

7.7

Comfort

7.3

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

Overall

7.4

Boarding

7.7

Comfort

7.3

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

Overall

7.4

Boarding

7.7

Comfort

7.3

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 Fremont to Bulgaria. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from Fremont to Bulgaria?

    Airlines like United Airlines, Austrian Airlines, and Turkish Airlines fly from Fremont to Bulgaria in about 15h 05m. The time it takes to get you to your destination can typically vary by up to 16h 30m. The distance from Fremont to Bulgaria is about 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 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, August is the cheapest month in which you can book a flight from Fremont to Bulgaria (average of $439). Flying from Fremont 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 Fremont to Bulgaria

Discover the top 5 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 outubro 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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