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

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

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 44% 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 11h 05m 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.

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 January 2026, there are 13 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.

$181 Cheap Flights from the United States to Sofia in 2026

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Find the cheapest flights from the United States to Sofia

Round-trip

One-way

Last minute

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

Enter your travel dates to find the best prices.

8:40 pm - 6:20 pm

BOS

SOF

14h 40m

1 stop

7:55 am - 2:05 pm

SOF

BOS

13h 10m

1 stop

$353Multiple Airlines

Tue, Feb 17 - Fri, Mar 6

9:50 pm - 6:20 pm

EWR

SOF

14h 30m

1 stop

8:00 am - 1:55 pm

SOF

EWR

12h 55m

1 stop

$353Multiple Airlines

Mon, Mar 23 - Wed, Apr 15

8:40 pm - 6:20 pm

BOS

SOF

14h 40m

1 stop

2:00 pm - 6:35 pm

SOF

BOS

11h 35m

1 stop

$360Lufthansa

Wed, Feb 18 - Wed, Mar 4

7:34 pm - 6:20 pm

BOS

SOF

16h 46m

2 stops

7:00 pm - 3:40 pm

SOF

BOS

27h 40m

1 stop

$369Lufthansa

Mon, Mar 23 - Mon, Apr 6

2:10 pm - 6:40 pm

LGA

SOF

21h 30m

2 stops

6:10 am - 11:23 pm

SOF

LGA

24h 13m

2 stops

$462United Airlines

Thu, Apr 2 - Fri, Apr 17

4:40 pm - 2:05 pm

JFK

SOF

14h 25m

1 stop

7:00 am - 2:15 pm

SOF

JFK

13h 15m

1 stop

$463KLM

Sat, Mar 7 - Fri, Mar 20

6:00 am - 7:45 pm

LGA

SOF

30h 45m

2 stops

7:55 am - 9:36 pm

SOF

LGA

20h 41m

2 stops

$464United Airlines

Fri, Feb 27 - Fri, Mar 6

8:20 pm - 3:10 pm

ORD

SOF

34h 50m

1 stop

9:35 am - 10:05 am

SOF

ORD

32h 30m

1 stop

$515Turkish Airlines

Fri, Feb 27 - Sun, Mar 8

8:20 pm - 3:10 pm

ORD

SOF

34h 50m

1 stop

4:00 pm - 10:05 am

SOF

ORD

26h 05m

1 stop

$516Turkish Airlines

Sat, Feb 14 - Sun, Mar 1

1:10 pm - 2:00 pm

MDW

SOF

16h 50m

2 stops

7:00 am - 5:54 pm

SOF

MDW

18h 54m

2 stops

$630KLM

Wed, Apr 1 - Sun, Apr 12

Air France flights from United States to Sofia

Our best Air France deals on United States to Sofia flight tickets

Air France

Feb 22

BOS6:30 pmBoston Logan Intl

12h 25m

1 stop

SOF1:55 pmSofia

Mar 3

SOF7:10 amSofia

18h 11m

2 stops

BOS6:21 pmBoston Logan Intl

$408

Air France

Apr 5

EWR3:28 pmNewark

15h 32m

2 stops

SOF2:00 pmSofia

Apr 22

SOF7:00 amSofia

18h 52m

2 stops

EWR6:52 pmNewark

$412

Turkish Airlines flights from United States to Sofia

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

Turkish Airlines

Feb 27

ORD8:20 pmChicago O'Hare Intl

34h 50m

1 stop

SOF3:10 pmSofia

Mar 8

SOF9:35 amSofia

32h 30m

1 stop

ORD10:05 amChicago O'Hare Intl

$515

Turkish Airlines

Feb 14

ORD8:20 pmChicago O'Hare Intl

34h 50m

1 stop

SOF3:10 pmSofia

Mar 1

SOF4:00 pmSofia

26h 05m

1 stop

ORD10:05 amChicago O'Hare Intl

$516

Turkish Airlines

Feb 1

ORD8:20 pmChicago O'Hare Intl

34h 50m

1 stop

SOF3:10 pmSofia

Mar 22

SOF4:00 pmSofia

26h 05m

1 stop

ORD11:05 amChicago O'Hare Intl

$523

Fly from

Fly to

Route

Depart

Return

Price

BostonSofia

BOS - SOF

BOSSOF

Boston Logan Intl

Tue 2/17

8:40 pm-6:20 pm

1 stop14h 40m

Sofia

Fri 3/6

7:55 am-2:05 pm

1 stop13h 10m

$353

NewarkSofia

EWR - SOF

EWRSOF

Newark

Mon 3/23

9:50 pm-6:20 pm

1 stop14h 30m

Sofia

Wed 4/15

8:00 am-1:55 pm

1 stop12h 55m

$353

BostonSofia

BOS - SOF

BOSSOF

Boston Logan Intl

Wed 2/18

8:40 pm-6:20 pm

1 stop14h 40m

Sofia

Wed 3/4

2:00 pm-6:35 pm

1 stop11h 35m

$360

BostonSofia

BOS - SOF

BOSSOF

Boston Logan Intl

Mon 3/23

7:34 pm-6:20 pm

2 stops16h 46m

Sofia

Mon 4/6

7:00 pm-3:40 pm

1 stop27h 40m

$369

New YorkSofia

LGA - SOF

LGASOF

New York LaGuardia

Thu 4/2

2:10 pm-6:40 pm

2 stops21h 30m

Sofia

Fri 4/17

6:10 am-11:23 pm

2 stops24h 13m

$462

New YorkSofia

JFK - SOF

JFKSOF

New York John F Kennedy Intl

Sat 3/7

4:40 pm-2:05 pm

1 stop14h 25m

Sofia

Fri 3/20

7:00 am-2:15 pm

1 stop13h 15m

$463

New YorkSofia

LGA - SOF

LGASOF

New York LaGuardia

Fri 2/27

6:00 am-7:45 pm

2 stops30h 45m

Sofia

Fri 3/6

7:55 am-9:36 pm

2 stops20h 41m

$464

ChicagoSofia

ORD - SOF

ORDSOF

Chicago O'Hare Intl

Fri 2/27

8:20 pm-3:10 pm

1 stop34h 50m

Sofia

Sun 3/8

9:35 am-10:05 am

1 stop32h 30m

$515

ChicagoSofia

ORD - SOF

ORDSOF

Chicago O'Hare Intl

Sat 2/14

8:20 pm-3:10 pm

1 stop34h 50m

Sofia

Sun 3/1

4:00 pm-10:05 am

1 stop26h 05m

$516

ChicagoSofia

MDW - SOF

MDWSOF

Chicago Midway

Wed 4/1

1:10 pm-2:00 pm

2 stops16h 50m

Sofia

Sun 4/12

7:00 am-5:54 pm

2 stops18h 54m

$630

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 $585.

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 weeks ahead of your departure date. In general, you can expect to find flights to Sofia for around $704 when searching weeks 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 $646 on momondo.

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

You could potentially save up to 12% 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 January 2026, there are 13 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 7,705 reviews	Search British Airways flights
KLM	PriceFrom $380	Free Cancellation	Rating 7.7 1,443 reviews	Search KLM flights
Austrian Airlines	PriceFrom $394	Free Cancellation	Rating 7.5 895 reviews	Search Austrian Airlines flights
Air France	PriceFrom $396	Free Cancellation	Rating 7.4 1,528 reviews	Search Air France flights
SWISS	PriceFrom $401	Free Cancellation	Rating 7.6 1,864 reviews	Search SWISS flights
LOT	PriceFrom $413	Free Cancellation	Rating 7.5 1,174 reviews	Search LOT flights
United Airlines	PriceFrom $422	Free Cancellation	Rating 7.4 9,215 reviews	Search United Airlines flights
Lufthansa	PriceFrom $436	Free Cancellation	Rating 6.8 7,756 reviews	Search Lufthansa flights
JetBlue	PriceFrom $478	Free Cancellation	Rating 7.2 2,891 reviews	Search JetBlue flights
ITA Airways	PriceFrom $505	Free Cancellation	Rating 6.7 1,137 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.