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$417+ Cheap flights from Fremont, CA to Sofia (SOF)

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 5/10. Fares are subject to change and may not be available on all flights or dates of travel.
SFO — SOF
may. 3 — may. 101
sáb. 5/3
sáb. 5/10
1 adult, Economy
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Cheapflights Tip: The best prices from Fremont to Sofia are usually found in January or March, booked 50 days in advance, depart on a Thursday or Sunday and return on a Saturday

Cheap flight deals from Fremont to Sofia

Keep the following information in mind while searching for Fremont to Sofia flight deals. Data was last updated abril 28, 2025.

Most accurate provider

AranGrant
3 stars

Most trusted provider

AranGrant
3 stars

Round-trip from

$696
(Gotogate)

One-way from

$417
(Kiwi.com)

Popular in

June

Cheapest in

January

Average price

$663
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 Sofia
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One-way flight from Fremont to Sofia
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Highest demand for flights based on searches. 30% potential increase in price ($374 potential increase over avg. RT price).
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Cheapest flight prices on average. 6% potential price decrease ($57 potential savings vs. average RT price).
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Average for round-trip flights in April 2025
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Find flight deals from Fremont to Sofia

Cheapest flights from Fremont to Sofia
Explore the most affordable flight options available from Fremont to Sofia. Find the lowest fares from popular airlines and budget airlines, with prices last updated on abril 28, 2025.

This United Airlines deal was found by Cheapflights users on 4/28. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 10/259:35 pmSFO - SOF
1 stop16h 10mUnited Airlines
sáb. 11/86:05 amSOF - SFO
1 stop18h 45mUnited Airlines
Deal found 4/28$688
This Gotogate deal was found by Cheapflights users on 4/27. 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.
dom. 7/209:05 pmSFO - SOF
2 stops28h 35mAustrian Airlines
mié. 8/206:55 pmSOF - SFO
2 stops34h 05mAustrian Airlines
Deal found 4/27$696
This FlightHub deal was found by Cheapflights users on 4/28. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 9/286:45 pmSFO - SOF
1 stop15h 40mTurkish Airlines
dom. 10/129:25 amSOF - SFO
1 stop17h 15mTurkish Airlines
Deal found 4/28$719
This Expedia deal was found by Cheapflights users on 4/28. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 8/267:30 pmSFO - SOF
1 stop28h 35mMultiple Airlines
mar. 9/96:20 amSOF - SFO
2 stops25h 20mMultiple Airlines
Deal found 4/28$721
This British Airways deal was found by Cheapflights users on 4/27. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 8/2510:28 pmSFO - SOF
2 stops36h 12mBritish Airways
lun. 9/88:00 pmSOF - SFO
1 stop27h 50mBritish Airways
Deal found 4/27$726
This Booking.com deal was found by Cheapflights users on 4/28. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 7/309:05 pmSFO - SOF
1 stop15h 55mLufthansa
mié. 8/137:25 pmSOF - SFO
1 stop33h 35mLufthansa
Deal found 4/28$729
This Justfly.com deal was found by Cheapflights users on 4/28. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 10/611:45 pmSFO - SOF
2 stops32h 55mAir Canada
dom. 10/196:20 amSOF - SFO
2 stops19h 08mAir Canada
Deal found 4/28$784
This Gotogate deal was found by Cheapflights users on 4/27. 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.
dom. 7/137:30 pmSFO - SOF
1 stop31h 00mSWISS
mar. 9/161:15 pmSOF - SFO
1 stop36h 55mSWISS
Deal found 4/27$805
This KAYAK deal was found by Cheapflights users on 4/28. 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.
lun. 5/194:20 pmSFO - SOF
2 stops38h 50mITA Airways
lun. 6/212:55 pmSOF - SFO
1 stop34h 20mITA Airways
Deal found 4/28$925

Cheapflights Fare Finder

Customize your flight search to find flights from Fremont to Sofia 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 abril 28, 2025.
Use the filters below to find and compare flights from Fremont to Sofia that are best for you.

Fly from

Fremont

Fly to

Sofia

Route

Depart

Return

Price

San FranciscoSofia

SFO - SOF

SFOSOF

San Francisco

dom. 7/20

9:05 pm-11:40 am

2 stops28h 35m

Sofia

mié. 8/20

6:55 pm-7:00 pm

2 stops34h 05m

$696

San FranciscoSofia

SFO - SOF

SFOSOF

San Francisco

mar. 7/15

4:35 pm-8:40 pm

1 stop18h 05m

Sofia

mié. 8/20

9:30 pm-8:20 pm

2 stops32h 50m

$732

San FranciscoSofia

SFO - SOF

SFOSOF

San Francisco

mar. 7/15

7:30 pm-10:05 am

1 stop28h 35m

Sofia

mié. 8/20

7:25 pm-7:00 pm

1 stop33h 35m

$742

San FranciscoSofia

SFO - SOF

SFOSOF

San Francisco

mar. 7/15

1:25 pm-6:40 pm

2 stops19h 15m

Sofia

mié. 8/20

8:00 am-5:46 pm

2 stops19h 46m

$749

San FranciscoSofia

SFO - SOF

SFOSOF

San Francisco

dom. 7/13

7:30 pm-12:30 pm

1 stop31h 00m

Sofia

mar. 9/16

1:15 pm-4:10 pm

1 stop36h 55m

$805

San FranciscoSofia

SFO - SOF

SFOSOF

San Francisco

mar. 7/15

9:05 pm-11:00 pm

1 stop15h 55m

Sofia

jue. 8/14

6:00 am-7:00 pm

1 stop23h 00m

$812

San FranciscoSofia

SFO - SOF

SFOSOF

San Francisco

lun. 5/19

4:20 pm-5:10 pm

2 stops38h 50m

Sofia

lun. 6/2

12:55 pm-1:15 pm

1 stop34h 20m

$925

San FranciscoSofia

SFO - SOF

SFOSOF

San Francisco

mar. 6/17

10:51 am-5:50 pm

2 stops20h 59m

Sofia

mar. 7/1

2:00 pm-11:15 am

2 stops31h 15m

$982

San FranciscoSofia

SFO - SOF

SFOSOF

San Francisco

mié. 6/11

1:17 pm-1:30 pm

2 stops38h 13m

Sofia

dom. 7/6

9:10 pm-9:42 pm

2 stops34h 32m

$1,251

San FranciscoSofia

SFO - SOF

SFOSOF

San Francisco

sáb. 5/10

2:18 pm-8:55 am

3 stops56h 37m

$417

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/27

Showing 1-10 of 16 results
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Best time to book a flight from Fremont to Sofia

Have a flexible travel schedule? Discover the best time to fly to Sofia 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 Sofia

How far ahead should I book a flight from Fremont to Sofia?

Use this chart to determine the optimal time to book a round-trip flight from Fremont to Sofia. Price data was last updated on April 25, 2025.

The price you pay for your flight from Fremont to Sofia may vary depending on when you book. For the best chance of a lower fare, look to book 47 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

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

Currently, November is the cheapest month in which you can book a flight from Fremont to Sofia (average of $632). Flying from Fremont to Sofia in June is currently the most expensive (average of $1,218). 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 SOF?

Find hourly flight availability from Fremont to Sofia. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated abril 28, 2025.

When flying from Fremont to Sofia, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

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

Use this chart to determine the cheapest time to fly round-trip from Fremont to Sofia. Price data was last updated on October 13, 2024.

Travelers seeking maximum savings on their Fremont to Sofia 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.

Rainfall in Sofia by month

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

In terms of precipitation, rainfall in Sofia 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 Sofia when rainfall is around 1.2 in.

Temperature in Sofia by month

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

If weather is an important factor for your trip to Sofia, 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 Sofia

Get insights into the airlines that provide service to Sofia. 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 Sofia. Reviews last updated abril 28, 2025.
Austrian Airlines
7.6
Good
780 reviews

Crew

8.1

Boarding

7.6

Comfort

7.3

Food

6.7

Overall

7.6

Entertainment

6.7

Reviews

1 / 20
8.0
Excellent

Ely,Mar 2025

VIE - PMI

Luggage at destination was not split into priorities. Had business and only got my bag after 20 minutes, almost towards the end and I was in a rush, so the "priority" was completely ignored.
Austrian Airlines
7.6
Good
780 reviews
Austrian Airlines
7.6
Good
780 reviews

Crew

8.1

Boarding

7.6

Comfort

7.3

Food

6.7

Overall

7.6

Entertainment

6.7

Reviews

1 / 20
8.0
Excellent

Ely,Mar 2025

VIE - PMI

Luggage at destination was not split into priorities. Had business and only got my bag after 20 minutes, almost towards the end and I was in a rush, so the "priority" was completely ignored.
SWISS
7.5
Good
1,587 reviews
Austrian Airlines
7.6
Good
780 reviews

Crew

8.1

Boarding

7.6

Comfort

7.3

Food

6.7

Overall

7.6

Entertainment

6.7

Reviews

1 / 20
8.0
Excellent

Ely,Mar 2025

VIE - PMI

Luggage at destination was not split into priorities. Had business and only got my bag after 20 minutes, almost towards the end and I was in a rush, so the "priority" was completely ignored.
United Airlines
7.4
Good
8,696 reviews
Austrian Airlines
7.6
Good
780 reviews

Crew

8.1

Boarding

7.6

Comfort

7.3

Food

6.7

Overall

7.6

Entertainment

6.7

Reviews

1 / 20
8.0
Excellent

Ely,Mar 2025

VIE - PMI

Luggage at destination was not split into priorities. Had business and only got my bag after 20 minutes, almost towards the end and I was in a rush, so the "priority" was completely ignored.
Turkish Airlines
7.3
Good
3,785 reviews
Austrian Airlines
7.6
Good
780 reviews

Crew

8.1

Boarding

7.6

Comfort

7.3

Food

6.7

Overall

7.6

Entertainment

6.7

Reviews

1 / 20
8.0
Excellent

Ely,Mar 2025

VIE - PMI

Luggage at destination was not split into priorities. Had business and only got my bag after 20 minutes, almost towards the end and I was in a rush, so the "priority" was completely ignored.
American Airlines
7.2
Good
10,000 reviews
Austrian Airlines
7.6
Good
780 reviews

Crew

8.1

Boarding

7.6

Comfort

7.3

Food

6.7

Overall

7.6

Entertainment

6.7

Reviews

1 / 20
8.0
Excellent

Ely,Mar 2025

VIE - PMI

Luggage at destination was not split into priorities. Had business and only got my bag after 20 minutes, almost towards the end and I was in a rush, so the "priority" was completely ignored.

Related info for your journey

Find useful and relevant information for your journey from Fremont to Sofia. 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 into for flights to Sofia from Fremont?

    Sofia (SOF) is the airport you will fly into if you book a flight from Fremont to Sofia. You should not have trouble finding flights to Sofia from Fremont; the airport handles an average of 0 inbound flights from Fremont per day. You should also have plenty of airline options to choose from since 6 airlines have flights to the Sofia airport from Fremont. It is only a 4.2 mi journey from Sofia (SOF) to Sofia’s city center.

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

    One-way options have recently been found by users for as low as $481 on American Airlines. Other airlines that offer cheap prices include British Airways from $482 and SWISS from $497 one-way.

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

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

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

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

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

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

    Currently, November is the cheapest month in which you can book a flight from Fremont to Sofia (average of $632). Flying from Fremont to Sofia in June is currently the most expensive (average of $1,218). 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 Sofia

Discover the top 6 airlines that operate flights from Fremont to Sofia. 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 abril 28, 2025.
AirlineCheapestAverageFlexibilityOn-time
ITA AirwaysCheapest$499Average$1,324FlexibilityNo cancel feeOn-time81%
SWISSCheapest$560Average$1,126FlexibilityNo cancel feeOn-time79%
Turkish AirlinesCheapest$584Average$723FlexibilityNo cancel feeOn-time77%
United AirlinesCheapest$634Average$1,186FlexibilityNo cancel feeOn-time69%
LufthansaCheapest$682Average$1,186FlexibilityNo cancel feeOn-time76%
Air CanadaCheapest$842Average$1,138FlexibilityNo cancel feeOn-time67%

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