SOF - SFO

$405 Find Cheap Flights from Sofia to San Francisco

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Sofia to San Francisco departing on 5/31. 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 San Francisco

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Sofia to San Francisco, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Sofia to San Francisco, as well as popular online travel agencies
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Everything you should know

Cheapest round-trip
$728
Typical prices: $799-$931
Multiple Airlines
Thu 6/11Tue 12/8
SOF - SFO • 2 stops
Cheapest one-way
$405
Typical prices: $807-$850
Multiple Airlines
Sun 5/31
SOF - SFO • 2 stops
Top airlines
LOT
Cheapest • from $816 (round-trip)
United Airlines
Best reviews • 7.4 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
When to travel
September
Cheapest • 12% price drop
December
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
Start a new search
KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to San Francisco!
Flight Deals
Booking Insights
Flight Deals

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

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Sofia to San Francisco 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 Sofia to San Francisco

Thu, Jun 11 - Tue, Dec 8
Multiple Airlines Logo
5:15 pm - 1:35 pm
SOF
-
SFO
30h 20m
2 stops
Multiple Airlines Logo
9:40 pm - 10:45 pm
SFO
-
SOF
15h 05m
1 stop
$728Multiple Airlines
Wed, Jun 10 - Tue, Dec 8
Multiple Airlines Logo
5:15 pm - 4:35 pm
SOF
-
SFO
33h 20m
2 stops
Multiple Airlines Logo
9:40 pm - 10:45 pm
SFO
-
SOF
15h 05m
1 stop
$733Multiple Airlines
Tue, Feb 24 - Mon, Mar 2
Multiple Airlines Logo
8:25 pm - 8:10 pm
SOF
-
SFO
33h 45m
1 stop
Multiple Airlines Logo
4:35 pm - 1:00 pm
SFO
-
SOF
34h 25m
2 stops
$770Multiple Airlines
Wed, Jun 10 - Tue, Dec 8
Multiple Airlines Logo
5:15 pm - 4:35 pm
SOF
-
SFO
33h 20m
2 stops
Multiple Airlines Logo
8:25 am - 1:45 pm
SFO
-
SOF
19h 20m
2 stops
$772Multiple Airlines
Tue, Mar 10 - Mon, Mar 23
Multiple Airlines Logo
4:45 pm - 3:30 pm
SOF
-
SFO
31h 45m
2 stops
Multiple Airlines Logo
8:55 pm - 3:35 pm
SFO
-
SOF
33h 40m
1 stop
$782Multiple Airlines
Thu, Jun 11 - Tue, Dec 8
Multiple Airlines Logo
8:10 pm - 8:50 pm
SOF
-
SFO
34h 40m
1 stop
Multiple Airlines Logo
9:40 pm - 10:45 pm
SFO
-
SOF
15h 05m
1 stop
$784Multiple Airlines
Tue, Mar 10 - Mon, Mar 23
Multiple Airlines Logo
8:25 pm - 9:10 pm
SOF
-
SFO
33h 45m
1 stop
Multiple Airlines Logo
8:55 pm - 3:35 pm
SFO
-
SOF
33h 40m
1 stop
$813Multiple Airlines
Mon, Mar 30 - Tue, Apr 14
Multiple Airlines Logo
10:30 pm - 12:40 pm
SOF
-
SFO
24h 10m
2 stops
Multiple Airlines Logo
7:40 pm - 9:40 am
SFO
-
SOF
28h 00m
1 stop
$814Multiple Airlines
Tue, Jun 16 - Thu, Jul 16
LOT Logo
6:45 pm - 8:15 pm
SOF
-
SFO
35h 30m
1 stop
LOT Logo
3:50 pm - 1:55 am
SFO
-
SOF
24h 05m
1 stop
$816LOT
Mon, Mar 30 - Tue, Apr 14
Multiple Airlines Logo
10:30 pm - 12:40 pm
SOF
-
SFO
24h 10m
2 stops
Multiple Airlines Logo
7:40 pm - 9:40 am
SFO
-
SOF
28h 00m
1 stop
$817Multiple Airlines
Booking Insights

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

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

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Sofia to San Francisco, 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 Sofia to San Francisco is September, where tickets cost $821 (return) on average. On the other hand, the most expensive months are February and August, where the average cost of round-trip tickets is $1,095 and $1,074 respectively.

Good to know

Low seasonJanuary
Cheapest flight$405
Most popular time to fly and prices are also 7% lower on average.
Flight from Sofia to San Francisco

When to book flights from Sofia to San Francisco

Are your dates flexible? Find out the best times to travel from Sofia to San Francisco 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 Sofia to San Francisco

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

    In the last 3 days, the lowest price for a flight from Sofia to San Francisco was $405 for a one-way ticket and $728 for a round-trip.

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

    Yes, you'll most likely have to show a valid passport before boarding the plane in Sofia and on arrival in San Francisco.

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

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

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

    Star Alliance is the only airline alliance operating flights between Sofia and San Francisco.

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

    The two airlines most popular with KAYAK users for flights from Sofia to San Francisco are United Airlines and Turkish Airlines. With an average price for the route of $932 and an overall rating of 7.4, United Airlines is the most popular choice. Turkish Airlines is also a great choice for the route, with an average price of $901 and an overall rating of 7.3.

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

    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 Sofia to San Francisco.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to San Francisco from Sofia 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 Sofia to San Francisco?

    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 San Francisco with an airline and back to Sofia with another airline. Booking your flights between Sofia and SFO 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 Sofia to San Francisco?

    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 San Francisco from Sofia up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

  • Which airlines provide the cheapest flights from Sofia to San Francisco?

    In the past 3 days, the cheapest round-trip tickets from Sofia to San Francisco were found on LOT ($816) and Turkish Airlines ($825).

Reviews of the top 3 airlines serving from Sofia to San Francisco

 
See real verified KAYAK customer reviews for airlines flying from Sofia to San Francisco. 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 Sofia to San Francisco? 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.
7.4
United AirlinesOverall score based on 9259 reviews
8.1Crew
7.1Entertainment
7.7Boarding
7.3Comfort
6.6Food
Airline reviews

the whole trip was smooth, and as comfortable as flying is these days. flight crew was friendly and very courteous and helpful.

10.0 ExcellentJanaki, Feb 2026
PDX - SFO
Read more United Airlines reviews

the whole trip was smooth, and as comfortable as flying is these days. flight crew was friendly and very courteous and helpful.

Very poor. The flight was delayed from Toronto because some forget to do there job . I got to my connecting gate in San Francisco 10 minutes before the departure.but this didn’t let me board even though the flight was still there for an other 30 minutes. The the gentleman at the unite airline desk told me that they usually wait for passengers but air Canada called and told them not to we I been rerouted to Manila instead of Hong Kong . In San Francisco they mad me check in my carryon bag . I was told the it will directly go yo ho chi minn cuyt but I was told that by the Vietnams airline desk that’s not there I’m 10 hours behind my scheduled flight and looks like I I’m going without baggage. I don’t have a chance of catching ..

First class ticket gets you a choice of chips or nuts. . Just like economy Southwest. Also no screen in the seats. This is first class???!

Flight arrived 30 min early and bag was waiting at the baggage pickup. United Club HNL was one of the nicest in the system

Mean flight attendant. I wanted to reuse my plastic cup, but he (Matthew) said he can't for safety. I then said "I don't want water then" and he poured me a glass. I hope Matthew gets herpes and spends the rest of his life poor, lonely, and homeless.

Yet another flight in which beverage and snack service was skipped. Other that that, firmly mediocre. Landed early, to gate late due to congestion at the gates. Airline's fault or airports fault: unknown.

Both flights delayed. 2nd flight over 3 hours late mechanical issues

It was good but only meal served is very less. Meantime good to add rice and chicken in one of meal

Teeny tiny bathrooms, crew was not realistic about when we'd arrive.

On the way my flight entertainment wouldn’t work the screen went black and no matter how many times I tried to turn it on it wouldn’t. Food was surprisingly good but the tray tables were tiny so you couldn’t get anything else on the table. The seats hardly go back and are not overly comfortable. Wouldn’t fly United again.

Very hot cabin made long flight uncomfortable, even in business class! Food was great. Istanbul business lounge had great food but too few bathrooms and seating . They also need more electric outlets for charging devices. Appreciate the ability to go through fast track lines w business class

The crew on this flight provided exceptional business class service to me.

The staff at the boarding or the rudest uninformative and no English whatsoever they’re very rude as if they are envious of you travelling I don’t understand how could someone would be this rude and this out of touch and cold

You charged me for luggage although the airline does not- you charged me for seat when customers can pick their own seat at checkout in I travel to Europe slot and I will not use kayak again

The seats were extremely small. Boarding was not communicated correctly. It wasn’t a pleasant trip.

They oversold the tickets by one which was my ticket so I didn’t have a ticket till last second

Not good. I was supposed to be in Mint but got in economy class

Requested food options were always finished. Supplied food items were good but of course not the desired choices.

The airport staff never announced that boarding has started. Both at iad or Islamabad or Istanbul.

Very bad experience with turkish airline tk 0001. Very uncomfortable seats and food ran out and crew was not helpful

Flight map did not work. Crew was great, food was good, plane took off on time and landed early. That's all I can ask.

I had a good comfortable seat. There was nearly an hour delay. There was an accident with the champagne, but I was well compensated. These things happen sometimes.

Very good. Comfortable and I felt well taken care of from start to finish

Bulkhead seats should not be an extra charge. They are extremely uncomfortable. And we missed our connecting flight due to slow luggage retreaval.

Not great - seats were very narrow and food was terrible.

Some of the crew was sassy and not super helpful. The food was okay, but it seems like they were all unprepared compared to my flight I did from JFK to Frankfurt

We missed our flight. There was not enough time built into the layover to get through immigration, customs, bagclaim, bag rechecking, and the long trip to another terminal and gate. Kayak really screwed up. We took the bus up to Wisconsin and then were picked up in Brookfield by private car. It was lucky we didnt miss the last bus out.

We were in premium economy seats that appeared to be locked in plae, No reclining. My aching back.

I don’t understand how they charge as much as they do for such a poor experience

Lufthansa flight LH04414 from Munich to Washington DC, was fine. Efficient and safe!

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

Information on your arrival and departure airports