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$417+ Cheap flights from San Francisco (SFO) 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 4 — May 111
Sun 5/4
Sun 5/11
1 adult, Economy
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Cheapflights Tip: The best prices from San Francisco 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 San Francisco to Sofia

Discover tips and strategies to find the most affordable flight options for your journey from San Francisco (SFO) to Sofia (SOF). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated April 29, 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.
Search Deals
Provider most trusted by Cheapflights users for San Francisco-Sofia flights.
Search Deals
From San Francisco to Sofia
Search Deals
One-way flight from San Francisco to Sofia
Search Deals
Highest demand for flights based on searches. 30% potential increase in price ($374 potential increase over avg. RT price).
Search Deals
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 San Francisco to Sofia

Cheapest flights from San Francisco to Sofia
Explore the most affordable flight options available from San Francisco to Sofia. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 29, 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.
Sat 10/259:35 pmSFO - SOF
1 stop16h 10mUnited Airlines
Sat 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.
Sun 7/209:05 pmSFO - SOF
2 stops28h 35mAustrian Airlines
Wed 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.
Sun 9/286:45 pmSFO - SOF
1 stop15h 40mTurkish Airlines
Sun 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.
Tue 8/267:30 pmSFO - SOF
1 stop28h 35mMultiple Airlines
Tue 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.
Mon 8/2510:28 pmSFO - SOF
2 stops36h 12mBritish Airways
Mon 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.
Wed 7/309:05 pmSFO - SOF
1 stop15h 55mLufthansa
Wed 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.
Mon 10/611:45 pmSFO - SOF
2 stops32h 55mAir Canada
Sun 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.
Sun 7/137:30 pmSFO - SOF
1 stop31h 00mSWISS
Tue 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.
Mon 5/194:20 pmSFO - SOF
2 stops38h 50mITA Airways
Mon 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 San Francisco 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 April 29, 2025.
Use the filters below to find and compare flights from San Francisco to Sofia that are best for you.

Fly from

San Francisco

Fly to

Sofia

Route

Depart

Return

Price

San FranciscoSofia

SFO - SOF

SFOSOF

San Francisco

Sun 7/20

9:05 pm-11:40 am

2 stops28h 35m

Sofia

Wed 8/20

6:55 pm-7:00 pm

2 stops34h 05m

$696

San FranciscoSofia

SFO - SOF

SFOSOF

San Francisco

Tue 7/15

4:35 pm-8:40 pm

1 stop18h 05m

Sofia

Wed 8/20

9:30 pm-8:20 pm

2 stops32h 50m

$732

San FranciscoSofia

SFO - SOF

SFOSOF

San Francisco

Tue 7/15

7:30 pm-10:05 am

1 stop28h 35m

Sofia

Wed 8/20

7:25 pm-7:00 pm

1 stop33h 35m

$742

San FranciscoSofia

SFO - SOF

SFOSOF

San Francisco

Tue 7/15

1:25 pm-6:40 pm

2 stops19h 15m

Sofia

Wed 8/20

8:00 am-5:46 pm

2 stops19h 46m

$749

San FranciscoSofia

SFO - SOF

SFOSOF

San Francisco

Sun 7/13

7:30 pm-12:30 pm

1 stop31h 00m

Sofia

Tue 9/16

1:15 pm-4:10 pm

1 stop36h 55m

$805

San FranciscoSofia

SFO - SOF

SFOSOF

San Francisco

Tue 7/15

9:05 pm-11:00 pm

1 stop15h 55m

Sofia

Thu 8/14

6:00 am-7:00 pm

1 stop23h 00m

$812

San FranciscoSofia

SFO - SOF

SFOSOF

San Francisco

Mon 5/19

4:20 pm-5:10 pm

2 stops38h 50m

Sofia

Mon 6/2

12:55 pm-1:15 pm

1 stop34h 20m

$925

San FranciscoSofia

SFO - SOF

SFOSOF

San Francisco

Tue 6/17

10:51 am-5:50 pm

2 stops20h 59m

Sofia

Tue 7/1

2:00 pm-11:15 am

2 stops31h 15m

$982

San FranciscoSofia

SFO - SOF

SFOSOF

San Francisco

Wed 6/11

1:17 pm-1:30 pm

2 stops38h 13m

Sofia

Sun 7/6

9:10 pm-9:42 pm

2 stops34h 32m

$1,251

San FranciscoSofia

SFO - SOF

SFOSOF

San Francisco

Sat 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
1
2

Compare providers for flights from San Francisco to Sofia

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from San Francisco to Sofia in April.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*2 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars
AranGrantPrice Accuracy3 starsTrust Score*3 stars
CheapfaremartPrice Accuracy-Trust Score*1 star
CheapOairPrice Accuracy3 starsTrust Score*3 stars
MytripPrice Accuracy3 starsTrust Score*3 stars
Justfly.comPrice Accuracy3 starsTrust Score*2 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on San Francisco-Sofia flights, users find the pricing of AranGrant to be most consistent on Cheapflights vs. AranGrant Users can find the same prices on San Francisco-Sofia flight deals on Cheapflights vs. AranGrant >95% of the time. Price accuracy is based on data collected from San Francisco-Sofia flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on San Francisco-Sofia flights, Cheapflights users trust AranGrant the most. AranGrant has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for San Francisco-Sofia flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from San Francisco to Sofia

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

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

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

To ensure you get the cheapest price possible for a flight from San Francisco to Sofia, you should look to book at least 47 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

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

Currently, November is the cheapest month in which you can book a flight from San Francisco to Sofia (average of $632). Flying from San Francisco 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 SFO to SOF?

Find hourly flight availability from San Francisco 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 April 29, 2025.

A simple way to save on the total cost of your ticket is to fly from San Francisco to Sofia in the afternoon. If you’re flexible enough to do this you can expect to save up to 41% on your trip compared to booking a flight in the morning.

What is the cheapest day to fly from San Francisco to Sofia?

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

Travelers seeking maximum savings on their San Francisco 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 April 29, 2025.
Austrian Airlines
7.6
Good
780 reviews

Boarding

7.6

Comfort

7.3

Food

6.7

Overall

7.6

Crew

8.1

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

Boarding

7.6

Comfort

7.3

Food

6.7

Overall

7.6

Crew

8.1

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

Boarding

7.6

Comfort

7.3

Food

6.7

Overall

7.6

Crew

8.1

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

Boarding

7.6

Comfort

7.3

Food

6.7

Overall

7.6

Crew

8.1

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

Boarding

7.6

Comfort

7.3

Food

6.7

Overall

7.6

Crew

8.1

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

Boarding

7.6

Comfort

7.3

Food

6.7

Overall

7.6

Crew

8.1

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 San Francisco to Sofia. 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 flying from San Francisco to Sofia round-trip?

    Cheapflights users have booked flights from San Francisco to Sofia round-trip from $696. Other airlines that can offer you cheap pricing are British Airways, from $732, and Lufthansa, from $742. Users have found that Austrian Airlines is 19% cheaper than the other options available to this destination.

  • What are the cheapest airlines to fly from San Francisco 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.

  • Where are the most common layover locations when flying from San Francisco to Sofia?

    San Francisco to Sofia flights have a layover in Istanbul most often.

  • What are some popular things to do or see while on a layover in Istanbul?

    Istanbul travelers tend to visit Taksim Square, Sultan Ahmet Camii, and Beyazit Meydani more than anywhere else. Taksim Square, Sultan Ahmet Camii, and Beyazit Meydani can be visited by traveling about 20.8 mi, 22.3 mi, and 21.7 mi respectively from Istanbul. Those on a layover in Istanbul in need of a rental car can book one at Istanbul for about $32.

  • Where are the least popular layover locations for San Francisco to Sofia flights?

    Of the flights from San Francisco to Sofia that have layovers, the fewest flights stop in Munich.

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

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

  • How can I find direct flights from San Francisco to Sofia?

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

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

    Yes. Cheapflights offers flight deals from San Francisco 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 San Francisco to Sofia?

    Currently, November is the cheapest month in which you can book a flight from San Francisco to Sofia (average of $632). Flying from San Francisco 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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Top 6 airlines flying from San Francisco to Sofia

Discover the top 6 airlines that operate flights from San Francisco 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 April 29, 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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