What airlines fly to Sofia?

Lufthansa, Turkish Airlines and United Airlines are the top three most popular airlines that fly to Sofia from United States according to our data. Lufthansa is the first choice among our users, with 43% of people opting to fly with this airline when traveling to Sofia. Keep in mind that there are 14 different airlines that fly to Sofia on a routine basis, so you have a few additional options to choose from.

How long does it take to fly to Sofia?

Flight times vary depending on what airport in United States you fly out of and what airport in Sofia you fly into. For example, flying from Boston to Sofia takes 10h 25m on average. On the other hand, flying from New York to Sofia takes 10h 50m on average. Keep in mind that it’s always quicker to opt for a non-stop flight, so be sure to check momondo if there are any available for your route.

What is the cheapest airline that flies from United States to Sofia?

Air Serbia, United Airlines, and Austrian Airlines are the most popular carriers operating from United States to Sofia

When did momondo last update prices for flights from United States to Sofia Airport?

Prices for flights from United States to Sofia Airport are refreshed on a daily basis.

How many operators does momondo search for flights from United States to Sofia Airport?

As of December 2025, there are 12 operators available to choose from for flights from United States to Sofia Airport.

How old do you have to be to fly from United States to Sofia Airport?

The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from United States to Sofia Airport.

What documentation or ID do you need to fly to Sofia Airport?

The necessary travel and health documents for your Sofia Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

$221 Cheap Flights from the United States to Sofia in 2025/26

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Find the cheapest flights from the United States to Sofia

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Recent round-trip flight deals from the United States to Sofia

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2:20 pm - 1:15 pm

BOS

SOF

15h 55m2 stops

2:00 pm - 6:35 pm

SOF

BOS

11h 35m1 stop

$347Lufthansa

qua, jan 21 - qua, jan 28

8:50 pm - 6:20 pm

EWR

SOF

14h 30m1 stop

7:55 am - 1:55 pm

SOF

EWR

13h 00m1 stop

$348Multiple Airlines

ter, jan 27 - ter, fev 3

8:40 pm - 6:20 pm

BOS

SOF

14h 40m1 stop

2:00 pm - 6:35 pm

SOF

BOS

11h 35m1 stop

$362Lufthansa

qua, jan 21 - qua, jan 28

3:07 pm - 12:05 pm

EWR

SOF

13h 58m2 stops

12:50 pm - 6:45 pm

SOF

EWR

12h 55m1 stop

$400United Airlines

ter, abr 14 - ter, abr 28

6:00 am - 6:20 pm

LGA

SOF

29h 20m2 stops

7:55 am - 11:43 pm

SOF

LGA

22h 48m2 stops

$458United Airlines

dom, jan 11 - dom, jan 18

4:27 pm - 8:50 pm

DFW

SOF

20h 23m2 stops

9:35 am - 11:05 pm

SOF

DFW

21h 30m2 stops

$534Turkish Airlines

qua, jan 21 - sex, jan 30

4:27 pm - 3:10 pm

DFW

SOF

38h 43m2 stops

9:40 pm - 10:59 pm

SOF

DFW

33h 19m2 stops

$539Turkish Airlines

seg, jan 12 - seg, jan 26

9:50 pm - 6:00 pm

ORD

SOF

12h 10m1 stop

5:20 am - 7:50 pm

SOF

ORD

22h 30m1 stop

$577LOT

sáb, abr 11 - sáb, abr 18

12:46 pm - 2:05 pm

MDW

SOF

17h 19m2 stops

7:00 am - 4:55 pm

SOF

MDW

17h 55m2 stops

$629KLM

qua, mar 4 - dom, mar 8

1:28 pm - 2:05 pm

MDW

SOF

16h 37m2 stops

7:00 am - 5:29 pm

SOF

MDW

18h 29m2 stops

$671KLM

seg, jan 12 - qui, jan 29

Lufthansa flights from United States to Sofia

Our best Lufthansa deals on United States to Sofia flight tickets

Lufthansa

Jan 21

BOS2:20 pmBoston Logan Intl

15h 55m

2 stops

SOF1:15 pmSofia

Jan 28

SOF2:00 pmSofia

11h 35m

1 stop

BOS6:35 pmBoston Logan Intl

$347

Find similar

Lufthansa

Jan 21

BOS8:40 pmBoston Logan Intl

14h 40m

1 stop

SOF6:20 pmSofia

Jan 28

SOF2:00 pmSofia

11h 35m

1 stop

BOS6:35 pmBoston Logan Intl

$362

Find similar

Lufthansa

Jan 11

BOS8:40 pmBoston Logan Intl

14h 40m

1 stop

SOF6:20 pmSofia

Jan 25

SOF2:00 pmSofia

11h 35m

1 stop

BOS6:35 pmBoston Logan Intl

$403

Find similar

United Airlines flights from United States to Sofia

Our best United Airlines deals on United States to Sofia flight tickets

United Airlines

Apr 14

EWR3:07 pmNewark

13h 58m

2 stops

SOF12:05 pmSofia

Apr 28

SOF12:50 pmSofia

12h 55m

1 stop

EWR6:45 pmNewark

$400

Find similar

United Airlines

Mar 25

EWR7:05 pmNewark

16h 55m

1 stop

SOF6:00 pmSofia

Apr 1

SOF6:20 amSofia

19h 49m

2 stops

EWR7:09 pmNewark

$446

Find similar

United Airlines

Jan 1

BOS6:01 amBoston Logan Intl

33h 44m

2 stops

SOF10:45 pmSofia

Jan 15

SOF6:05 amSofia

34h 57m

2 stops

BOS10:02 amBoston Logan Intl

$456

Find similar

Fly from

Fly to

Route

Depart

Return

Price

BostonSofia

BOS - SOF

BOSSOF

Boston Logan Intl

qua 1/21

2:20 pm-1:15 pm

2 stops15h 55m

Sofia

qua 1/28

2:00 pm-6:35 pm

1 stop11h 35m

$347

NewarkSofia

EWR - SOF

EWRSOF

Newark

ter 1/27

8:50 pm-6:20 pm

1 stop14h 30m

Sofia

ter 2/3

7:55 am-1:55 pm

1 stop13h 00m

$348

BostonSofia

BOS - SOF

BOSSOF

Boston Logan Intl

qua 1/21

8:40 pm-6:20 pm

1 stop14h 40m

Sofia

qua 1/28

2:00 pm-6:35 pm

1 stop11h 35m

$362

NewarkSofia

EWR - SOF

EWRSOF

Newark

ter 4/14

3:07 pm-12:05 pm

2 stops13h 58m

Sofia

ter 4/28

12:50 pm-6:45 pm

1 stop12h 55m

$400

New YorkSofia

LGA - SOF

LGASOF

New York LaGuardia

dom 1/11

6:00 am-6:20 pm

2 stops29h 20m

Sofia

dom 1/18

7:55 am-11:43 pm

2 stops22h 48m

$458

DallasSofia

DFW - SOF

DFWSOF

Dallas/Fort Worth

qua 1/21

4:27 pm-8:50 pm

2 stops20h 23m

Sofia

sex 1/30

9:35 am-11:05 pm

2 stops21h 30m

$534

DallasSofia

DFW - SOF

DFWSOF

Dallas/Fort Worth

seg 1/12

4:27 pm-3:10 pm

2 stops38h 43m

Sofia

seg 1/26

9:40 pm-10:59 pm

2 stops33h 19m

$539

ChicagoSofia

ORD - SOF

ORDSOF

Chicago O'Hare Intl

sáb 4/11

9:50 pm-6:00 pm

1 stop12h 10m

Sofia

sáb 4/18

5:20 am-7:50 pm

1 stop22h 30m

$577

ChicagoSofia

MDW - SOF

MDWSOF

Chicago Midway

qua 3/4

12:46 pm-2:05 pm

2 stops17h 19m

Sofia

dom 3/8

7:00 am-4:55 pm

2 stops17h 55m

$629

ChicagoSofia

MDW - SOF

MDWSOF

Chicago Midway

seg 1/12

1:28 pm-2:05 pm

2 stops16h 37m

Sofia

qui 1/29

7:00 am-5:29 pm

2 stops18h 29m

$671

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from United States to Sofia

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

Prices

Airlines

Other information

What is the cheapest month to fly to Sofia?

The cheapest month to fly to Sofia from United States is in November. Flight prices, which tend to average around $516, are often lower during this time because this is during the off-season. If you aren’t able to travel during the month of November, then book flights to Sofia from United States during September instead. Flights to Sofia in September, while not as cheap as those in November, still average around $587.

What is the cheapest day to depart on your flight to Sofia?

According to our data, Monday is the cheapest day to fly to Sofia from United States. The lowest ticket price found for a Monday departure recently was $795. Keep in mind that prices can always vary depending on your route and whether or not you are flying domestic or international. Flights from United States to Sofia on a Saturday will generally be more expensive and average around $1,032. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.

What is the cheapest time of day to depart on your flight to Sofia?

At noon is the cheapest time of day to fly from United States to Sofia when you can find flight prices for as low as $618. Flying to Sofia at noon is an ideal time because this is during off-peak travel hours. In the afternoon is when there is more demand to fly to Sofia, so prices are often more expensive at around $969 per ticket.

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

You are more likely to see cheaper flights to Sofia from United States when booking week ahead of your departure date. In general, you can expect to find flights to Sofia for around $720 when searching week out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Sofia from United States for as low as $615 on momondo.

Can stopping save me money on United States to Sofia flights?

You could potentially save up to 32% on your flight if you consider stops on a United States to Sofia flight.

Cheap United States to Sofia flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from United States to Sofia

Fastest flight time	10h 25m
Direct flights	None

The fastest flight from United States to Sofia takes 10h 25m

There are no direct flights from United States to Sofia. There are no popular flight routes from United States to Sofia.

Search flight deals

When did momondo last update prices for flights from United States to Sofia Airport?
Prices for flights from United States to Sofia Airport are refreshed on a daily basis.
How many operators does momondo search for flights from United States to Sofia Airport?
As of December 2025, there are 12 operators available to choose from for flights from United States to Sofia Airport.
How old do you have to be to fly from United States to Sofia Airport?
The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from United States to Sofia Airport.
What documentation or ID do you need to fly to Sofia Airport?
The necessary travel and health documents for your Sofia Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

Best airlines flying from United States to Sofia

Compare and see reviews for airlines that fly from United States to Sofia with momondo

Airline	Rating	Free Cancellation	Price
British Airways	PriceFrom $356	Free Cancellation	Rating 6.7 7,571 reviews	Search British Airways flights
KLM	PriceFrom $380	Free Cancellation	Rating 7.7 1,432 reviews	Search KLM flights
Austrian Airlines	PriceFrom $398	Free Cancellation	Rating 7.6 879 reviews	Search Austrian Airlines flights
SWISS	PriceFrom $401	Free Cancellation	Rating 7.5 1,810 reviews	Search SWISS flights
Air France	PriceFrom $416	Free Cancellation	Rating 7.4 1,504 reviews	Search Air France flights
United Airlines	PriceFrom $428	Free Cancellation	Rating 7.4 9,095 reviews	Search United Airlines flights
LOT	PriceFrom $437	Free Cancellation	Rating 7.6 1,146 reviews	Search LOT flights
Lufthansa	PriceFrom $449	Free Cancellation	Rating 6.8 7,626 reviews	Search Lufthansa flights
JetBlue	PriceFrom $478	Free Cancellation	Rating 7.2 2,899 reviews	Search JetBlue flights
ITA Airways	PriceFrom $505	Free Cancellation	Rating 6.7 1,102 reviews	Search ITA Airways flights

Bansko

Borovets

Velingrad

Sandanski

Why use momondo?

Why should I use momondo to find a flight deal from United States to Sofia?

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from United States to Sofia. Millions of users trust and use momondo every year so you are in good hands.

Can I find flights from United States to Sofia with flexible booking policies on momondo?

Yes. All flights to Sofia from United States on momondo can be compared and filtered by various policies on offer, including flexible booking.

How can momondo help me find flights from United States to Sofia?

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Sofia from United States.

I’m not ready to book a flight from United States to Sofia right now. Can momondo alert me if prices change?

Yes momondo offers price alerts on flights to Sofia from United States. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.