$351 Find Cheap Flights from Sofia to the United States

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 the United States departing on 1/28. 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

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Cheap Flights from Sofia to the United States

Cheapest round-trip prices found by our users on KAYAK in the last 72 hours
New York
Newark2 stops$486
Los Angeles
Los Angeles1 stop$756
Las Vegas
Las Vegas2 stops$883
Miami
Miami2 stops$639
Chicago
Chicago2 stops$685
San Francisco
San Francisco1 stop$647
Boston
Boston1 stop$562
Denver
Denver1 stop$825
Seattle
Seattle3 stops$662
Fort Lauderdale
Fort Lauderdale2 stops$809
Atlanta
Atlanta1 stop$786
Tampa
Tampa1 stop$798
San Diego
San Diego2 stops$874
Philadelphia
Philadelphia1 stop$686
New York
Newark2 stops$486
Los Angeles
Los Angeles1 stop$756
Las Vegas
Las Vegas2 stops$883
Miami
Miami2 stops$639
Chicago
Chicago2 stops$685
San Francisco
San Francisco1 stop$647
Boston
Boston1 stop$562
Denver
Denver1 stop$825
Seattle
Seattle3 stops$662
Fort Lauderdale
Fort Lauderdale2 stops$809
Atlanta
Atlanta1 stop$786
Tampa
Tampa1 stop$798
San Diego
San Diego2 stops$874
Philadelphia
Philadelphia1 stop$686

Book Cheap Sofia to the United States Plane Tickets

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

Thu, Jan 22 - Wed, Feb 4
Multiple Airlines Logo
3:15 pm - 3:40 pm
SOF
-
EWR
31h 25m2 stops
Multiple Airlines Logo
5:30 pm - 11:30 pm
EWR
-
SOF
23h 00m2 stops
$486Multiple Airlines
Thu, Jan 22 - Wed, Feb 4
Multiple Airlines Logo
3:15 pm - 3:40 pm
SOF
-
EWR
31h 25m2 stops
Multiple Airlines Logo
6:30 pm - 11:30 pm
EWR
-
SOF
22h 00m3 stops
$489Multiple Airlines
Thu, Jan 15 - Thu, Jan 22
Lufthansa Logo
6:00 am - 4:05 pm
SOF
-
PHL
17h 05m1 stop
Lufthansa Logo
5:40 pm - 1:50 pm
PHL
-
SOF
13h 10m1 stop
$686Lufthansa
Thu, Jan 15 - Thu, Jan 22
United Airlines Logo
6:00 am - 4:05 pm
SOF
-
PHL
17h 05m1 stop
United Airlines Logo
5:40 pm - 1:50 pm
PHL
-
SOF
13h 10m1 stop
$687United Airlines
Thu, Jan 15 - Thu, Jan 22
United Airlines Logo
6:00 am - 4:05 pm
SOF
-
PHL
17h 05m1 stop
United Airlines Logo
5:00 pm - 10:45 pm
PHL
-
SOF
22h 45m2 stops
$690United Airlines
Thu, Feb 5 - Wed, Apr 1
KLM Logo
7:00 am - 5:45 pm
SOF
-
ORD
18h 45m2 stops
KLM Logo
4:50 pm - 2:00 pm
ORD
-
SOF
13h 10m1 stop
$696KLM
Fri, Jan 16 - Thu, Jul 23
LOT Logo
2:35 pm - 8:00 pm
SOF
-
ORD
13h 25m1 stop
LOT Logo
9:50 pm - 1:55 pm
ORD
-
SOF
32h 05m1 stop
$697LOT
Thu, Feb 5 - Wed, Apr 1
KLM Logo
7:00 am - 5:55 pm
SOF
-
ORD
18h 55m2 stops
KLM Logo
12:15 pm - 2:00 pm
ORD
-
SOF
17h 45m2 stops
$700KLM
Fri, Jan 16 - Thu, Jul 23
LOT Logo
2:35 pm - 8:00 pm
SOF
-
ORD
13h 25m1 stop
LOT Logo
5:10 pm - 1:55 pm
ORD
-
SOF
36h 45m2 stops
$710LOT
Fri, Jan 16 - Thu, Jul 23
Lufthansa Logo
6:10 am - 3:20 pm
SOF
-
ORD
17h 10m1 stop
Lufthansa Logo
3:35 pm - 12:05 pm
ORD
-
SOF
12h 30m1 stop
$726Lufthansa
Booking Insights

KAYAK's insights & trends for Sofia to the United States flights

Get data-powered insights and trends into flights from Sofia to the United States 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 the United States?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Sofia to the United States, 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 the United States is February, when tickets cost $582 (return) on average. On the other hand, the most expensive months are August and December, when the average cost of round-trip tickets is $756 and $740 respectively.

What’s the cheapest day of the week to fly from Sofia to United States?

The average price of all round-trip flights from Sofia to the United States clicked on KAYAK for each day over the last 12 months.

If you are looking for a flight deal from Sofia to United States, look for departures on Thursdays and avoid leaving on a Saturday, as it's usually the priciest day. When flying back from United States, Thursday is the cheapest day to fly and Saturday is the most expensive.

How far in advance should I book a flight from Sofia to the United States?

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Sofia to the United States, 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 Sofia to the United States, you should book around 2 weeks before departure, which saves you about 6% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 23 weeks before departure.

Good to know

Low seasonNovember
Cheapest flight$351
Best time to beat the crowds but there is an average 2% increase in price.
Most popular time to fly with an average 4% increase in price.
Flight from Sofia to Los Angeles

FAQs - booking United States flights

  • How does KAYAK find such low prices on flights from Sofia to the United States?

    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 the United States.

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

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

    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 from Sofia to the United States with an airline and back with another airline.

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

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

  • What is the cheapest time of day to fly to the United States?

    The cheapest time of day to fly to the United States is generally in the afternoon, when round-trip flights cost $623 on average. Morning departures are around 6% more expensive than evening flights, on average. The most expensive time of day to fly to the United States is generally in the morning, which is peak travel time and where the average cost of a ticket is $708.

Reviews of the top 5 airlines serving from Sofia to the United States

 
Need help choosing which airline to fly with from Sofia to the United States? 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.
7.7
KLMOverall score based on 1432 reviews
7.1Entertainment
7.6Comfort
7.8Boarding
7.2Food
8.3Crew
Airline reviews

Terrible last row seats many seats available but no offer to move to better seat

2.0 MediocreAnonymous, Dec 2025
AMS - BUD
Read more KLM reviews

Terrible last row seats many seats available but no offer to move to better seat

Delay on my previous leg, had to run to catch my flight. But that happens. Overall ok.

Delay and had to run between flight to get my connection due to this delay but besides that the overall experience was ok. I arrived with just an hour of delay.

At the airport, terrible, I do not want to even remember it. It was too humiliating for a business class passenger.

Couldn’t get boarding pass in SLC even with help from a redcoat, so had to find a desk in AMS to get boarding pass. Technical problems so not sure why. Very inconvenient. The KLM app is not as user friendly as most apps. Also had to wait almost an hour on the tarmac for a fuel truck, which caused us to miss a connecting bus in LUX.

Over 1 Hr delay. No APU so no AC on ground. Plane was hot during boarding and then they closed the doors over 20 minutes before engine start so interior of plane was steamy hot and stuffy. Could have been helped by opening doors until ready to depart.

First of all we couldn’t check in online, then we learn at the airport we were on stand by for KLM’s mistake of overbooking. The seats were not comfy at all. Our luggage got lost.

Ad experience - been flying many years with them but they are losing out to other carriers with their service and bagage / seating policy. My 2 12-yo kids were not placed with the parent. Absurdity.

Short flight so it was okay. Nice crew, all very pleasant and professional. We were near the back in row 27 so just as we got our drinks, we started our descent so had to drink very quickly!

KLM remains a quality flag carrier airline which maintains its standards whilst all their competitors are lowering theirs.

Smooth flight, excellent crew and good food. Not enough space; sitting are too small.

Flight was delayed for a hour from Warsaw, not sure why. When we landed in Chicago, plane was still on the runway for about half a hour. Took a while to get off.

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

Crew was excellent. Business class was poor on the short flight and mediocre at best on the international flight.

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

Boarding was delayed for an unknown reason for more than an hour. While the airplane was at the gate, the boarding time was moved by 10-20 minutes every 15 minutes. No entertainment on the plane.

During the flight, the fleas biting me in the plane.

Boarding could've been improved a bit, the rest is excellent.

Agents helping disable person doesnt know connections to Poland and after 9 agents helping and 2hours ,we made it to proper terminal. Polish Dreamliner its Polish nightmare liner with so narrow seats and no room under front seat for bag and feet,in economy class.To upgrade, to higher standart cost an arm and leg ,even there are empty seats No good experience overall

The crew and flight were amazing . However , my bag’s locker got broken and no refund provided . Everything else was amazing except this bad incident that ruined my experience

It was nice to have gotten up upgraded to first class with a meal on a three hour flight

For an expensive flight to another country, United has a lot of nerve serving pretzels and no meals (unless, of course, you want to buy something to eat). Unacceptable.

The food is terrible. The same pasta or chicken with bad taste and presentation

United have really come back. Airport and boarding process is clear and good, app and information also very good

The Sears in the 800s are not too good perfect Airbus why cant the new 737 fix that

Flight was delayed 8 times. We were sitting at the airport for 14 hours. We got 2 hours of sleep (if that) on what was not meant to be a red-eye.

It was probably one of the worst flights I’ve been on. The restrooms were never cleaned or stocked. The food was very subpar, and i usually enjoy airline food, so I was disappointed. It was just all around a bad experience. The only saving grace was the flight attendants.

After a delay at the gate, C3, at Ohare on Sunday, I left my Blk ski coat on the bench at the gate, lost! Please review my lob claim, thx.

Very bad! They kept delaying my flight and wouldn’t do anything about it

They brought an empty plane to the gate. Then a flight delay was announced for maintenance and waiting on a part. I was then put on a flight to San Francisco instead with a connecting flight to my final destination. Arrived at my final destination 2 hours late.

Seats too much and for the price we paid eve thought economy we still had to pay $169 to check a ba that’s ridiculous and also my daughter needed water so she can take her medicine we push the boton for the attendant to get us water they never came we push it 3 times no one came and ask what we needed . Am not happy with the service at all I will not fly with TK anymore

Boarding experience was a mess- both to and from Istanbul airport. No one knew anything. They asked everyone to line up according to their sit numbers- it was unbelievable. Business class had a separate line, but it was hard to find- I had to go through all that mess before finding it. Would not recommend

Excellent food and service on my international flight. Most notable is the food provided by Turkish even for coach passengers is very good.

They can my date of travel and let me standard in Istanbul for three days stop over and only pay for one day in a hotel with only one breakfast for three days.

the flight was cancelled and I was rebooked twice, once 26 hours later, then another 24 hours later. In total the flight was delayed for 40 hours. Never again will I use kayak or Turkish Airlines for my travel.

Worst experience with boarding once we left the wheel chair even traveling business we had to wait with all the crowd for the bus to take us to the plane then climb the stairs with our bags When you pay extra for comfort and convenience and you don’t get any is disappointing

Food is very turkish. No regard for other natinalities taste and preference. The entertainment can be improved- it was the same menu on 10/8/25 and 10/25/25. The boarding is the worst in the airline industry- I suggest you ask your staff to and watch how other airlines do it.

The best airline for international travel in terms of value you get in business class (service/cost)

I liked the overall flight experience. However, Turkish officials could do a better job at guiding non-Turkish speakers to their connecting flight gates in such a huge & vast airport.

Very small and cramped aisles and seats. Food was poor but the fresh hot roll and hummus was good. No cans of soda given but they had small bottles of water. Crew was nice and pleasant and kept bathroom clean.

Booked seats (paid extra) online and found they didn’t exist on the flight. We were then separated from the rest of our party. Given seats in the very back of the plane. We will not fly Discover or Lufthansa again. We will not book flights or travel through Kayak again!

Had a few open seats and could use it for a great rest ful journey

It was very good. Service was friendly and efficient, and food was good.

Airline food is airline food, but the plane was wonderful and the seating comfort outstanding. One of my best flights in quite a while.

Crew was outstanding, helpful and friendly. Food is deteriorating. The snack at the end of the flight was not good, a greasy moosh of toast cheese snd other unidentifiable ingredients. Coming from Germany a pretzl with butter would have been better. Entertainment had a great selection.

Smooth flight with enough time for connection. Ran out of meal options. In-flight and gate staff were friendly and helpful. Good service overall.

The seat space seemed small especially when the person ahead reclined but other than that, very good.

Luggage transfer in Chicago was not performed in time. I received my luggage at my destination two days later.

Give yourself over 2+ hours layover because if flight is slighlty delayed and you miss your connection, Lufthansa will do nothing for you

We would have missed our connection from Munich to Boston but we had a van outside the plan that wisked us to our terminal. Much appreciated and we didn’t even realize that Lufthansa had done this until the announcement on disembarkation. Well organized airline! Will definitely fly Lufthansa again!!!

Everything you need to know for your flight from Sofia to the United States

Information on your arrival and departure airports