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Bulgaria

$259+ 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 7/15. Fares are subject to change and may not be available on all flights or dates of travel.
SFO — SOF
Feb 27 — Mar 61
Fri 2/27
Fri 3/6
1 adult, Economy
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Cheap 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 January 28, 2026.

This Mytrip deal was found by Cheapflights users on 1/26. 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.
Wed 4/299:05 pm
SFO
-
SOF
1 stop16h 05m
Multiple Airlines
Wed 5/136:20 am
SOF
-
SFO
2 stops19h 02m
Multiple Airlines
Deal found 1/26$505
This Mytrip deal was found by Cheapflights users on 1/27. 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.
Tue 4/288:30 am
SFO
-
SOF
2 stops17h 40m
Multiple Airlines
Tue 5/126:10 am
SOF
-
SFO
2 stops19h 12m
Multiple Airlines
Deal found 1/27$510
This CrystalTravel deal was found by Cheapflights users on 1/27. 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.
Tue 4/289:05 pm
SFO
-
SOF
1 stop16h 05m
Lufthansa
Tue 5/126:10 am
SOF
-
SFO
1 stop16h 30m
Lufthansa
Deal found 1/27$515
This FlightHub deal was found by Cheapflights users on 1/26. 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 4/299:05 pm
SFO
-
SOF
1 stop16h 05m
Lufthansa
Wed 5/136:20 am
SOF
-
SFO
1 stop16h 20m
Lufthansa
Deal found 1/26$517
This FlightHub deal was found by Cheapflights users on 1/26. 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 4/279:05 pm
SFO
-
SOF
1 stop16h 05m
Lufthansa
Mon 5/117:25 pm
SOF
-
SFO
1 stop33h 35m
Lufthansa
Deal found 1/26$529
This oojo deal was found by Cheapflights users on 1/26. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/273:52 pm
SFO
-
SOF
2 stops42h 38m
British Airways
Mon 5/118:10 pm
SOF
-
SFO
2 stops35h 54m
British Airways
Deal found 1/26$534
This Gotogate deal was found by Cheapflights users on 1/27. 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.
Sun 5/179:05 pm
SFO
-
SOF
1 stop16h 05m
Multiple Airlines
Thu 5/286:30 am
SOF
-
SFO
2 stops18h 52m
Multiple Airlines
Deal found 1/27$537
This United Airlines deal was found by Cheapflights users on 1/26. 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 4/299:05 pm
SFO
-
SOF
1 stop16h 05m
United Airlines
Tue 10/66:10 am
SOF
-
SFO
2 stops22h 28m
United Airlines
Deal found 1/26$545
This Kiwi.com deal was found by Cheapflights users on 1/26. 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 3/1110:40 pm
SFO
-
SOF
1 stop15h 05m
Lufthansa
Wed 3/186:10 am
SOF
-
SFO
1 stop16h 30m
Lufthansa
Deal found 1/26$546
This KAYAK deal was found by Cheapflights users on 1/28. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/118:25 am
SFO
-
VAR
2 stops20h 50m
Austrian Airlines
Mon 3/24:00 pm
VAR
-
SFO
2 stops39h 39m
Austrian Airlines
Deal found 1/28$670
This KAYAK deal was found by Cheapflights users on 1/28. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/118:25 am
SFO
-
VAR
2 stops20h 50m
Austrian Airlines
Tue 3/34:00 pm
VAR
-
SFO
2 stops37h 25m
Austrian Airlines
Deal found 1/28$672
This Kiwi.com deal was found by Cheapflights users on 1/28. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 2/156:50 pm
SFO
-
VAR
1 stop15h 45m
Turkish Airlines
Sun 3/110:00 am
VAR
-
SFO
1 stop16h 45m
Turkish Airlines
Deal found 1/28$675

Find flight deals from Fremont to Bulgaria

Keep the following information in mind while searching for Fremont to Bulgaria flight deals. Data was last updated January 28, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$505
(Mytrip)

One-way from

$259
(Air France)

Popular in

June

Cheapest in

October

Average price

$662
Provider with most accurate pricing for San Francisco-Sofia flight deals.
Search Deals
Provider most trusted by Cheapflights users for San Francisco-Sofia flights.
Search Deals
From Fremont to Bulgaria
Search Deals
One-way flight from Fremont to Bulgaria
Search Deals
Highest demand for flights based on searches. 30% potential increase in price ($348 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 8% potential price decrease ($60 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in January 2026
Search Deals

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 January 28, 2026.
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

Sun 5/17

9:05 pm-11:10 pm

1 stop16h 05m

Sofia

Thu 5/28

6:30 am-3:22 pm

2 stops18h 52m

$537

San FranciscoSofia

SFO - SOF

SFOSOF

San Francisco

Sun 5/17

9:05 pm-11:10 pm

1 stop16h 05m

Sofia

Thu 5/28

6:30 am-12:40 pm

1 stop16h 10m

$563

San FranciscoSofia

SFO - SOF

SFOSOF

San Francisco

Thu 2/26

2:40 pm-6:00 pm

1 stop17h 20m

Sofia

Thu 3/12

6:00 am-1:40 pm

1 stop16h 40m

$575

San FranciscoSofia

SFO - SOF

SFOSOF

San Francisco

Wed 3/18

4:35 pm-10:45 pm

2 stops21h 10m

Sofia

Wed 4/1

1:50 pm-8:00 pm

1 stop16h 10m

$592

San FranciscoSofia

SFO - SOF

SFOSOF

San Francisco

Thu 2/19

9:25 pm-10:45 pm

1 stop15h 20m

Sofia

Thu 3/5

6:00 am-12:40 pm

1 stop16h 40m

$600

San FranciscoSofia

SFO - SOF

SFOSOF

San Francisco

Thu 2/19

6:50 pm-3:10 pm

1 stop34h 20m

Sofia

Thu 3/5

9:40 pm-4:45 pm

1 stop29h 05m

$601

San FranciscoSofia

SFO - SOF

SFOSOF

San Francisco

Sun 4/12

7:35 pm-12:15 pm

1 stop30h 40m

Sofia

Mon 4/20

3:45 pm-7:45 pm

2 stops38h 00m

$602

San FranciscoSofia

SFO - SOF

SFOSOF

San Francisco

Sun 4/12

9:05 pm-11:10 pm

1 stop16h 05m

Sofia

Sun 4/19

6:20 am-8:00 pm

1 stop23h 40m

$605

San FranciscoSofia

SFO - SOF

SFOSOF

San Francisco

Fri 3/13

10:40 pm-10:45 pm

1 stop15h 05m

Sofia

Fri 3/20

2:35 pm-9:10 pm

1 stop15h 35m

$605

San FranciscoSofia

SFO - SOF

SFOSOF

San Francisco

Wed 3/4

1:30 pm-10:45 pm

1 stop23h 15m

Sofia

Sun 3/8

6:05 am-2:50 pm

1 stop18h 45m

$606

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/27

Showing 1-10 of 27 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 $814). 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.

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 January 28, 2026.
Read reviews from past customers who have flown United Airlines, Turkish Airlines, and Lufthansa 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
9,206 reviews

Boarding

7.7

Crew

8.1

Overall

7.4

Comfort

7.3

Entertainment

7.1

Food

6.6

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
9,206 reviews
United Airlines
7.4
Good
9,206 reviews

Boarding

7.7

Crew

8.1

Overall

7.4

Comfort

7.3

Entertainment

7.1

Food

6.6

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
4,209 reviews
United Airlines
7.4
Good
9,206 reviews

Boarding

7.7

Crew

8.1

Overall

7.4

Comfort

7.3

Entertainment

7.1

Food

6.6

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
7,749 reviews
United Airlines
7.4
Good
9,206 reviews

Boarding

7.7

Crew

8.1

Overall

7.4

Comfort

7.3

Entertainment

7.1

Food

6.6

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
1,131 reviews
United Airlines
7.4
Good
9,206 reviews

Boarding

7.7

Crew

8.1

Overall

7.4

Comfort

7.3

Entertainment

7.1

Food

6.6

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??
British Airways
6.7
Okay
7,704 reviews
United Airlines
7.4
Good
9,206 reviews

Boarding

7.7

Crew

8.1

Overall

7.4

Comfort

7.3

Entertainment

7.1

Food

6.6

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, Lufthansa, and Austrian Airlines fly from Fremont to Bulgaria in about 16h 05m. The time it takes to get you to your destination can typically vary by up to 4h 45m. 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 cheapest airlines to fly from Fremont to Bulgaria one-way?

    The cheapest airline one-way is KLM, with whom users have recently found tickets for as low as $262. However, be on the lookout for offers from Lufthansa 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, 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 $814). 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 January 28, 2026.
AirlineCheapestAverageFlexibilityOn-time
Turkish AirlinesCheapest$542Average$1,169FlexibilityNo cancel feeOn-time77%
LufthansaCheapest$563Average$862FlexibilityNo cancel feeOn-time76%
British AirwaysCheapest$594Average$770FlexibilityNo cancel feeOn-time70%
United AirlinesCheapest$614Average$920FlexibilityNo cancel feeOn-time69%
ITA AirwaysCheapest$651Average$1,084FlexibilityNo cancel feeOn-time81%
Air CanadaCheapest$771Average$1,133FlexibilityNo cancel feeOn-time67%

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