SFO - SOF

$340 Find Cheap Flights from San Francisco to Sofia

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from San Francisco to Sofia departing on 8/17. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to Sofia

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from San Francisco to Sofia.
These are the airlines KAYAK users have selected most often from within our search results in flight searches from San Francisco to Sofia.
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Everything you should know

Cheapest round-trip
$603
Typical prices: $691-$672
Turkish Airlines
Wed 9/2Wed 9/16
SFO - SOF • 1 stop
Cheapest one-way
$340
Typical prices: $473-$606
British Airways
Mon 8/17
SFO - SOF • 2 stops
Top airlines
Cheapest • from $603 (round-trip)
Best reviews • 7.5 score
Airline reviews
Airline reviews
+1
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Airline reviews
Airline reviews
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Nonstop flights
Not available
There are currently no direct flights between San Francisco and Sofia. You'll need at least 1 connection.
Insights
Insights
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Insights
Top layover airports
Cheapest • Avg $625 (round-trip)
Shortest trip • 15h 00m (one-way)
Insights
Insights
Insights
Insights
When to book
in advance
Our data shows that travelers who book at least 2 weeks in advance save around 26% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
Cheapest • 21% price drop
Most popular
Good to know
Good to know
+1
+1
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Good to know
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Flight Deals
Booking Insights
Flight Deals

Cheap Flights from San Francisco to Sofia (SFO-SOF)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from San Francisco to Sofia that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from San Francisco to Sofia

Wed, Sep 2 - Wed, Sep 16
Turkish Airlines Logo
6:45 pm - 1:15 pm
SFO
-
SOF
32h 30m
1 stop
Turkish Airlines Logo
3:50 pm - 4:40 pm
SOF
-
SFO
34h 50m
1 stop
$603Turkish Airlines
Thu, Sep 3 - Thu, Sep 17
Turkish Airlines Logo
12:55 pm - 3:00 pm
SFO
-
SOF
16h 05m
1 stop
Turkish Airlines Logo
9:05 pm - 10:50 am
SOF
-
SFO
23h 45m
1 stop
$609Turkish Airlines
Wed, Apr 29 - Tue, Oct 6
Turkish Airlines Logo
6:45 pm - 1:15 pm
SFO
-
SOF
32h 30m
1 stop
Turkish Airlines Logo
9:35 am - 4:40 pm
SOF
-
SFO
17h 05m
1 stop
$612Turkish Airlines
Fri, Apr 24 - Fri, May 8
Turkish Airlines Logo
6:45 pm - 8:15 pm
SFO
-
SOF
15h 30m
1 stop
Turkish Airlines Logo
3:50 pm - 4:40 pm
SOF
-
SFO
34h 50m
1 stop
$613Turkish Airlines
Sun, Apr 26 - Sun, May 10
Turkish Airlines Logo
6:45 pm - 8:45 am
SFO
-
SOF
28h 00m
1 stop
Turkish Airlines Logo
2:05 pm - 10:50 am
SOF
-
SFO
30h 45m
1 stop
$631Turkish Airlines
Mon, Aug 24 - Mon, Aug 31
Turkish Airlines Logo
12:55 pm - 8:15 pm
SFO
-
SOF
21h 20m
1 stop
Turkish Airlines Logo
9:05 pm - 10:50 am
SOF
-
SFO
23h 45m
1 stop
$638Turkish Airlines
Thu, Aug 27 - Wed, Sep 2
Turkish Airlines Logo
12:55 pm - 3:00 pm
SFO
-
SOF
16h 05m
1 stop
Turkish Airlines Logo
9:05 pm - 10:50 am
SOF
-
SFO
23h 45m
1 stop
$639Turkish Airlines
Tue, Aug 11 - Tue, Sep 15
Turkish Airlines Logo
6:45 pm - 8:45 am
SFO
-
SOF
28h 00m
1 stop
Turkish Airlines Logo
9:05 pm - 4:40 pm
SOF
-
SFO
29h 35m
1 stop
$640Turkish Airlines
Fri, Apr 24 - Tue, Apr 28
Turkish Airlines Logo
12:55 pm - 8:15 pm
SFO
-
SOF
21h 20m
1 stop
Turkish Airlines Logo
9:35 am - 4:40 pm
SOF
-
SFO
17h 05m
1 stop
$652Turkish Airlines
Tue, Sep 29 - Sun, Oct 11
Turkish Airlines Logo
12:55 pm - 8:15 pm
SFO
-
SOF
21h 20m
1 stop
Turkish Airlines Logo
3:50 pm - 10:50 am
SOF
-
SFO
29h 00m
1 stop
$658Turkish Airlines
Booking Insights

KAYAK's insights & trends for San Francisco to Sofia flights

Get data-powered insights and trends into flights from San Francisco to Sofia to help you find the cheapest flights, the best time to fly and much more.

How much is a round-trip flight from San Francisco to Sofia?

This analysis is based on the cheapest round-trip price found on KAYAK in the last 12 months by searching for a flight from San Francisco to Sofia departing in September.

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from San Francisco to Sofia, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from San Francisco to Sofia is April, where tickets cost $611 (return) on average. On the other hand, the most expensive months are June and July, where the average cost of round-trip tickets is $1,144 and $1,056 respectively.

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

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from San Francisco to Sofia, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below average price on the flight from San Francisco to Sofia, you should book around 2 weeks before departure, which saves you about 26% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 19 weeks before departure.

Good to know

Low seasonJanuary
Cheapest flight$340
Best time to beat the crowds with an average 15% drop in price.
Most popular time to fly with an average 48% increase in price.
Flight from San Francisco to Sofia

When to book flights from San Francisco to Sofia

Are your dates flexible? Find out the best times to travel from San Francisco to Sofia based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from San Francisco to Sofia

  • Are there opportunities to upgrade to first class on flights from San Francisco to Sofia?

    You can upgrade to first class on the San Francisco to Sofia route if you need a smooth journey. Upgrading is cheaper than originally booking first class. In general, your airline emails you about available first-class seats and requests you to upgrade. However, consider your travel budget before upgrading to avoid inconveniences. In addition, you need to upgrade at least 24 hours before take-off.

  • What are the popular layovers on the San Francisco to Sofia route?

    Most airlines from San Francisco to Sofia, including SWISS, Austrian Airlines, and British Airways, have one or more stopovers. The layover city and duration vary. Therefore, research the flight route before booking to choose the best journey. The major layover cities include Zurich, Amsterdam, Frankfurt, Munich, Copenhagen, Paris, London, Dublin, Rome, Istanbul, Barcelona, Lisbon, Tel Aviv, Doha, and Dubai.

  • Which airlines fly sustainably from San Francisco to Sofia?

    SWISS offers a sustainable journey by using sustainable aviation fuel (SAF). These airlines aim to make these fuels their long-term goal to reduce carbon emissions. Turkish Airlines ensure sustainability through its ground and operational practices. These airlines use sustainable aviation fuel to lower greenhouse gas emissions.

  • How can I travel from Sofia Airport to Downtown Sofia?

    The Line 20 tram offers a reliable journey from SOF airport to downtown. The trip takes approximately 56 minutes, depending on the traffic or local stops. If you have heavy luggage or need a quick trip to the city, consider taking a shuttle or taxi to get there in about 8 minutes. If you take Line 2 via the subway, you arrive in the city in around 16 minutes. Another option is a rental car to drive at your own pace.

  • What is the cheapest flight from San Francisco to Sofia?

    In the last 3 days, the lowest price for a flight from San Francisco to Sofia was $340 for a one-way ticket and $603 for a round-trip.

  • Do I need a passport to fly between San Francisco and Sofia?

    Yes

  • Which airports will I be using when flying from San Francisco to Sofia?

    San Francisco and Sofia are both served by 1 main airport. You will leave San Francisco from San Francisco and will be arriving at Sofia.

  • Which aircraft models fly most regularly from San Francisco to Sofia?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from San Francisco to Sofia?

    oneworld, and Star Alliance are the airline alliances operating flights between San Francisco and Sofia, with oneworld being the most commonly used for this route.

  • What is the most popular layover when flying to Sofia from San Francisco?

    Istanbul is the most popular layover city among KAYAK users traveling from San Francisco to Sofia.

  • Which is the best airline for flights from San Francisco to Sofia, LOT or United Airlines?

    The two airlines most popular with KAYAK users for flights from San Francisco to Sofia are LOT and United Airlines. With an average price for the route of $1,336 and an overall rating of 7.5, LOT is the most popular choice. United Airlines is also a great choice for the route, with an average price of $814 and an overall rating of 7.4.

  • How does KAYAK find such low prices on flights from San Francisco to Sofia?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from San Francisco to Sofia.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from San Francisco to Sofia?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Sofia from San Francisco is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from San Francisco to Sofia?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Sofia with an airline and back to San Francisco with another airline. Booking your flights between San Francisco and SOF can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from San Francisco to Sofia?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Sofia from San Francisco up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

KAYAK’s top tips for finding a cheap flight from San Francisco to Sofia

  • San Francisco International Airport (SFO) is a hub for Alaska Airlines and United Airlines. It serves as a gateway to European, Asian, and American destinations. On the other hand, Sofia Airport (SOF) is a hub for Wizz Air, BH Air, and Bulgaria Air.
  • Low-cost airlines on the San Francisco to Sofia route, including Lufthansa, Austrian Airlines, and Turkish Airlines, allow passengers to save money on their trip. Most of these airlines charge competitive ticket prices, and you can choose a convenient journey.
  • SFO airport offers VIP services to notable persons such as the military. These services include quality airport transportation, meet and greet upon arrival, priority check-in, luggage assistance, access to the VIP lounge, and priority boarding.
  • Austrian Airlines offer special meals to passengers with religious, medical, or dietary needs on cheap flights from San Francisco to Sofia. These airlines offer a wide range of meals, including low-cholesterol, gluten-free, Muslim, and kosher. However, you have to order at least 24 hours before departure.
  • You can take the BART train from Downtown San Francisco to SFO airport, arriving in about 36 minutes. Another option is the Line 292 bus that gets you to the airport in approximately 1h 15min. If you're running late and need a quick journey, a taxi takes about 16 minutes.

Reviews of the top 5 airlines serving from San Francisco to Sofia

 
See real verified KAYAK customer reviews for airlines flying from San Francisco to Sofia. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from San Francisco to Sofia? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.5
LOTOverall score based on 1184 reviews
7.1Food
7.4Comfort
8.2Crew
6.9Entertainment
7.5Boarding
Airline reviews

Good in general, but i think the chair is not comfortable for traveling more than 2 hours ..

8.0 Excellentkinan, Jan 2026
KTW - WAW
Read more LOT reviews

Good in general, but i think the chair is not comfortable for traveling more than 2 hours ..

Krakow airport is very disorganized. nice seats. friendly crew. long legs had screens. short leg did not

Stuck on a plane for 6 hours due to a technical or mechanical issue.

Horrible communication, flight boarded then we sat on plane for almost 5 hours as the runway was barely covered in snow with no plows in sight and the as we tried to taxi there was a major equipment failure due to poor push off technique causing all passengers to be taken off the flight to ultimately have the flight cancelled. There was barely any communication to passengers as to what was happening or what to do next to get placed on another flight. Arriving to my final destination a whole day later having to take a connecting flight through Lisbon to ultimately end up in New York instead of a direct flight as none available for the next day. Never flying LOT airlines again!

Boarding was a madhouse. Airport staff was completely disinterested in communicating about the delays. Never again.

The seats are very narrow. Communication regarding bids for better seating could be better

Although I was flying in business class, the feeling, comfort and in general the whole experience was like flying in a low cost airline. Boarding by. Us, no priority to business class passengers. The plane was very old and looked poor and rely old. Seats do not recline. Space between rows very small. No separation between business class and economy. No separate toilet for business class passengers. Of course no entertainment, no WiFi and no charging. Very bad experience

No WiFi and ok comfort in business class. Home safe I guess that’s all that really matters.

Very poor. Seats like economy class, food unbeatable, no charging, no entertainment, no WiFi, boarding by bus - no justification for calling and pricing this as business class

The flight itself was pleasant and on time. Crew was very good. However, breakfast food was barely acceptable. Unfortunately this satisfies the recent industry standards. I asked for a sandwich with ham (another choice was cheese), but received a sandwich with roast beef.

Boarding was again a "free for all". We were boarding group 4, and almost the entire plane was able to board before us. It's a shame that someone who follows the rules, gets the short end of the stick. Not fair.

It was perfect! I've never flown with United before, but I definitely will in the future

the entire flight felt off. The crew seemed uninterested and disengaged. The food service was really bad - overcooked, bland, weird food service. They actually woke us up to serve chicken wraps in the middle of the night, after dinner and before breakfast. Made no sense. Ultimately, I was glad they did though, because the breakfast had been held for so long it was inedible. Eggs, potatoes, sausage - all disgusting. We were asked to "honor" the lavatories for premium customers and stay in our own cabin: this was also strange. So people in economy didn't pay enough to use the closest toilet to them??? It's a toilet. All in all, not the experience I have come to expect from United Airlines. The return flight from Paris to SFO was better, btw.

They delayed the flight from 9:00 to 11:55 At 11:45 they canceled the flight. I paid a premium price for the tickets with poor service

The 777’s economy seat’s legroom was more tolerable than expected. I appreciate the reclining mechanism which slides the seat forward to minimize cannibalizing the space behind. The food was terrible: very salty.

Seats are uncomfortable. This has been a trend in the industry for decades. Trying to fit more seats on each plane to increase profits at the expense of the passenger.

Staff were good. My seat was in need of repair, but for a short flight was not problematic. Usual basic snack and drink setup that you'll find on any US carrier. Over, a decent, basic flight.

Flight delayed for more than 16 hrs and no effort was spent to provide an alternate

We had turbulence ever 1/2 hr or so and the captains announcements were SOOOO LOUD

it was a very short flight so my expectations were low.

The seats seems abit small and the reclining is too much, the seat in front of me came back too much and made it uncomfortable for me.

As a first time flyer with Turkish Airlines. My experience was very good due to the factor that there were to many passengers on the my first flight compared to my connecting flight. However, I know that nothing is perfect and all companies are trying to accommodate their passengers to the best way possible. I will always say, a FEW INCHES will go LONG WAY. That's something all airliners should consider, and not only the money aspect!!! A long time commitment is better than one time service! Thank you

Flight was delayed. While standing at the gate, a note appeared on the sign saying the gate had changed to a gate far away. No member of the Turkish airlines team got on the microphone to instruct passengers to go to the other gate, to ignore the chiron, etc. Finally, the message disappeared. Eventually, the flight began to board. Very slowly. More slowly than I experience with other airlines. Though Istanbul may just be slow . . . In all other ways, great flight, great entertainment (top notch movies), great service, excellent food, comfortable lie-flat seat, dimmed lights, etc.

Staff at the airport wasn't helpful or friendly. Probably the worst airport experience I have ever had, going and coming. The staff on the plane was better. Still not super friendly or personable. However, they were not rude like airport staff. They ran out of certain menu items. Maybe could have been prepared better? Overall just ok.

It was a pleasant experience. In flight entertainment could have been better

The desk crew at the LAX crew could do better. A girl named Mahesi was very abrasive and unfriendly. She needs a better customer service uproar.

It was peaceful excited We enjoyed it always Turkish peaceful excited

Istanbul to Lahore flight was less than standard for international business class cabins. Seat did not were not flat and it did not operate easily. I had to push buttons hard repeatedly to operate the seat. I was in 5A seat

IAH to Istanbul was outstanding across the board. The flight from Istanbul to Male was good, not great.

the cabin was kept too hot. couldn't sleep as a result

Terrible. Lost our luggage for 4 days. Did not advise passengers there was a strike in Barcelona Airport and had zero personnel on hand at airport to advise passengers on where to go to file claims. We had to fend for ourselves. No assistance at all other than an online claims submission process that we had to find out about on our own.

Lufthansa cancelled our flight from Los Angeles to Naples Italy on March 10 for scheduled flight on March 12 Very stressful experience trying to arrange alternatives. Will never fly again with Lufthansa

Service and food were excellent. Incredibly friendly and competent staff. Flight was delayed over and hour and I had to run between terminals to get my connecting flight.

Late flight Delays Poor service Poor staff Worst airline ever

Lufthansa still has a good level of quality compared to US airlines, especially with respect to (1) food quality - actually tasty, (2) good French red wine - free, (3) good movie selection. Also my ticket price includes 1 free check-in luggage, while some other budget airlines sneak in an extra $150 for a checkin.

The food could be better, more snacks. And have some plugs to chargue the phone.

Everything was really great just The aircraft was too old and sounded it will break during takeoff

Extremely pleased with the crew. Best flight attendants ever! Very friendly, genuinely caring and attentive.

Best flight attendants ever! Very customer and service oriented, courteous, professional and helpful.

Cheapest airlines I have ever been on. I got downgraded and never got on united. I got rerouted through Vancouver onto jetwesf

The flight I initially booked from Los Angeles to Florence. I made sure had a layover of about 90 minutes in Rome, so there’d be enough time to connect. A couple weeks before the flight for some reason I was updated that that flight had changed and I was only gonna have 60 minutes to connect. From LAX we were delayed by 45 minutes meaning making the connection was unlikely. The crew informed me that my connecting flight would not wait and they would rebook me on one four or five hours later. I wasn’t happy, but I accepted it. It is what it is. Except when we got closer, two separate flight attendant approached me eagerly and said they had great news that my connecting flight would in fact wait for me, but I needed to hurry through the airport so they didn’t have to wait too long. I was first off the flight. I ran about 4000 steps. And got through passport control all in under 15 minutes. When I arrived to my gate, I was greeted by a flight attendant there who was completely indifferent, said they didn’t hold the plane and they just closed the doors. Had they even held it for two minutes I would’ve made it. She simply told me that the flight attendant on my flight lied about the plane being held, and that they do it all the time. These were all employees of the same company ITA. I was absolutely livid at her indifference and having been lied to and then having to wait five hours and waste a day in Europe at an airport.

The flight was canceled and we have not received the refund

They lost my checked in bag and have not helped me.

First, ITA lost my bag and the baggage team showed no regard in trying to find it. Second, I had paid for priority boarding as part of a first class ticket and instead they disregarded boarding groups and we all boarded at the same time. Third, wasn't allowed to select my seat in advance even with a first class ticket. When I was assigned bulkhead, I was told I would need to pay to change my seat. Overall, very disappointing experience.

I did not leave to Italy yet. We had technical problems on flight from SF to Maimi and had to land in Denver and wait for another plane to take us to Miami, so I missed my plane to Italy. I am still waiting for the Agency to fix my flight till today the haven’t done anything and I am paying for my Hotel stay. Everyday they are promising to fix my flight, they are not doing so and they are not even looking for another solution

My seat was broken and ducted taped and my monitor did not work the entire time over 8 hrs sitting. And I had no books or anything with me

Good with timing of flights. The crew was exceptionally unfriendly. I heard more than one person say this. And even with the aisle, it seemed more uncomfortable than usual. The movie selection was old and poor, but the dinner was great - the lasagna and tiramisu.

The check in process is chaotic. It says partially checked-in. Never heard of such a thing. Then lost our reserved seats when we finally checked in at the airport. The seats don’t recline. Then we had to get mew boarding passes at the connection. Last, my companion lost her baggage and up to now there’s no update. We’re already half-way through our vacation and still no news what happened to the luggage.

On both sides of my itinerary, the planes were old, the seats did not work, the seats were filthy, and the crew were unfriendly

-The seats could be roomier -The entertainment in English could be more current! The moves were very old!!! -They served too many carbs! What happened to fruit and yogurt!!!!

Everything you need to know for your flight from San Francisco to Sofia

Information on your arrival and departure airports