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

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

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 New York to Sofia takes 11h 05m on average. On the other hand, flying from Boston to Sofia takes 12h 10m 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 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 41% of people opting to fly with this airline when traveling to Sofia. Keep in mind that there are 12 different airlines that fly to Sofia on a routine basis, so you have a few additional options to choose from.

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 October 2026, 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.

$205 Cheap Flights from the United States to Sofia in 2026/27

Discover deals from 900+ travel sites with momondo.

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.

8:00 pm - 1:10 amBOS Boston Logan Intl-SOF Sofia

22h 10m1 stop Madrid Barajas

10:00 pm - 6:25 pmSOF Sofia-BOS Boston Logan Intl

27h 25m1 stop Madrid Barajas

$541Multiple Airlines

Sun, Dec 6 - Sun, Dec 20

8:00 pm - 5:00 pmBOS Boston Logan Intl-SOF Sofia

14h 00m1 stop Madrid Barajas

10:40 am - 6:25 pmSOF Sofia-BOS Boston Logan Intl

14h 45m1 stop Madrid Barajas

$554Multiple Airlines

Mon, Nov 30 - Mon, Dec 14

1:30 pm - 8:40 amIAD Washington, D.C. Dulles Intl-SOF Sofia

12h 10m1 stop Istanbul

9:30 am - 7:25 pmSOF Sofia-IAD Washington, D.C. Dulles Intl

16h 55m1 stop Istanbul

$638Turkish Airlines

Tue, Dec 1 - Tue, Dec 8

2:30 pm - 3:10 pmIAD Washington, D.C. Dulles Intl-SOF Sofia

17h 40m1 stop Istanbul

4:00 pm - 7:25 pmSOF Sofia-IAD Washington, D.C. Dulles Intl

34h 25m1 stop Istanbul

$638Turkish Airlines

Tue, Nov 3 - Wed, Nov 11

9:40 pm - 10:55 pmSFO San Francisco-SOF Sofia

15h 15m1 stop Munich Franz Josef Strauss

6:25 am - 12:35 pmSOF Sofia-SFO San Francisco

16h 10m1 stop Frankfurt am Main

$687Lufthansa

Wed, Feb 10 - Wed, Feb 24

9:40 pm - 10:55 pmSFO San Francisco-SOF Sofia

15h 15m1 stop Munich Franz Josef Strauss

6:25 am - 12:35 pmSOF Sofia-SFO San Francisco

16h 10m1 stop Frankfurt am Main

$687Lufthansa

Tue, Feb 9 - Tue, Feb 23

10:10 pm - 5:55 pmLAX Los Angeles-SOF Sofia

33h 45m1 stop Warsaw Frederic Chopin

2:35 pm - 9:10 pmSOF Sofia-LAX Los Angeles

15h 35m1 stop Warsaw Frederic Chopin

$690LOT

Sat, Mar 13 - Sat, Mar 27

4:35 pm - 6:00 pmLAX Los Angeles-SOF Sofia

15h 25m1 stop Warsaw Frederic Chopin

5:30 am - 2:35 pmSOF Sofia-LAX Los Angeles

19h 05m1 stop Warsaw Frederic Chopin

$690LOT

Mon, Apr 12 - Mon, Apr 26

9:50 pm - 10:55 pmORD Chicago O'Hare Intl-SOF Sofia

17h 05m1 stop Munich Franz Josef Strauss

2:10 pm - 8:05 pmSOF Sofia-ORD Chicago O'Hare Intl

13h 55m1 stop Frankfurt am Main

$706United Airlines

Tue, Jan 12 - Fri, Jan 15

11:25 am - 1:15 pmORD Chicago O'Hare Intl-SOF Sofia

17h 50m2 stops Newark Munich Franz Josef Strauss

2:10 pm - 8:05 pmSOF Sofia-ORD Chicago O'Hare Intl

13h 55m1 stop Frankfurt am Main

$707United Airlines

Wed, Jan 13 - Fri, Jan 15

Recent last minute flight deals from the United States to Sofia

Enter your travel dates to find the best prices.

9:40 pm - 8:20 pmIAD Washington, D.C. Dulles Intl-SOF Sofia

15h 40m1 stop Istanbul

11:55 am - 7:25 pmSOF Sofia-IAD Washington, D.C. Dulles Intl

14h 30m1 stop Istanbul

$664Turkish Airlines

Mon, Oct 19 - Fri, Dec 4

1:15 pm - 8:45 amIAD Washington, D.C. Dulles Intl-SOF Sofia

12h 30m1 stop Istanbul

11:55 am - 7:25 pmSOF Sofia-IAD Washington, D.C. Dulles Intl

14h 30m1 stop Istanbul

$664Turkish Airlines

Tue, Oct 20 - Fri, Dec 4

12:30 am - 12:10 amJFK New York John F Kennedy Intl-SOF Sofia

16h 40m1 stop Rome Fiumicino

6:30 pm - 8:05 pmSOF Sofia-JFK New York John F Kennedy Intl

32h 35m2 stops Rome Fiumicino Lisbon Humberto Delgado

$710Multiple Airlines

Sun, Oct 18 - Wed, Nov 4

12:30 am - 11:35 pmJFK New York John F Kennedy Intl-SOF Sofia

16h 05m1 stop Rome Fiumicino

6:55 pm - 10:30 pmSOF Sofia-JFK New York John F Kennedy Intl

34h 35m1 stop Rome Fiumicino

$718Multiple Airlines

Thu, Oct 15 - Sun, Oct 18

10:20 pm - 1:55 pmJFK New York John F Kennedy Intl-SOF Sofia

32h 35m1 stop Warsaw Frederic Chopin

6:40 pm - 8:35 pmSOF Sofia-JFK New York John F Kennedy Intl

32h 55m1 stop Warsaw Frederic Chopin

$755LOT

Mon, Oct 19 - Wed, Nov 4

4:15 pm - 2:55 pmJFK New York John F Kennedy Intl-SOF Sofia

15h 40m1 stop Zurich

11:15 am - 1:15 pmSOF Sofia-JFK New York John F Kennedy Intl

33h 00m1 stop Zurich

$784SWISS

Sun, Oct 18 - Sun, Nov 1

8:30 pm - 6:40 pmEWR Newark-SOF Sofia

15h 10m1 stop Munich Franz Josef Strauss

6:25 am - 5:00 pmSOF Sofia-EWR Newark

16h 35m1 stop Frankfurt am Main

$787Lufthansa

Sun, Oct 18 - Sun, Nov 1

4:15 pm - 2:55 pmJFK New York John F Kennedy Intl-SOF Sofia

15h 40m1 stop Zurich

2:00 pm - 1:15 pmSOF Sofia-JFK New York John F Kennedy Intl

30h 15m2 stops Munich Franz Josef Strauss Zurich

$801SWISS

Sun, Oct 18 - Sun, Nov 1

8:30 pm - 6:40 pmEWR Newark-SOF Sofia

15h 10m1 stop Munich Franz Josef Strauss

7:05 pm - 7:05 pmSOF Sofia-EWR Newark

31h 00m1 stop Munich Franz Josef Strauss

$813Lufthansa

Tue, Oct 20 - Mon, Nov 2

10:05 pm - 1:55 pmLAX Los Angeles-SOF Sofia

29h 50m1 stop Warsaw Frederic Chopin

2:35 pm - 8:10 pmSOF Sofia-LAX Los Angeles

15h 35m1 stop Warsaw Frederic Chopin

$842LOT

Fri, Oct 16 - Sat, Nov 14

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Austrian Airlines flights from United States to Sofia

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

Austrian Airlines

Jan 11

SFO8:10 amSan Francisco

29h 45m

2 stops

SOF11:55 pmSofia

Jan 25

SOF6:45 pmSofia

27h 50m

2 stops

SFO12:35 pmSan Francisco

$743

Austrian Airlines

Nov 11

EWR5:55 pmNewark

10h 55m

1 stop

SOF11:50 amSofia

Nov 25

SOF7:55 amSofia

13h 00m

1 stop

EWR1:55 pmNewark

$744

Austrian Airlines

Nov 12

EWR5:55 pmNewark

17h 05m

1 stop

SOF6:00 pmSofia

Nov 25

SOF7:55 amSofia

13h 00m

1 stop

EWR1:55 pmNewark

$755

Turkish Airlines flights from United States to Sofia

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

Turkish Airlines

Dec 1

IAD9:20 pmWashington, D.C. Dulles Intl

34h 50m

1 stop

SOF3:10 pmSofia

Dec 8

SOF9:40 pmSofia

21h 05m

1 stop

IAD11:45 amWashington, D.C. Dulles Intl

$638

Turkish Airlines

Nov 3

IAD10:20 pmWashington, D.C. Dulles Intl

33h 50m

1 stop

SOF3:10 pmSofia

Nov 17

SOF4:00 pmSofia

34h 25m

1 stop

IAD7:25 pmWashington, D.C. Dulles Intl

$647

Turkish Airlines

Jan 12

IAD1:30 pmWashington, D.C. Dulles Intl

24h 20m

1 stop

SOF8:50 pmSofia

Jan 26

SOF9:40 pmSofia

21h 05m

1 stop

IAD11:45 amWashington, D.C. Dulles Intl

$648

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

BostonSofia

BOS Boston Logan Intl - SOF Sofia

BOSSOF

Boston Logan Intl

Sun 12/6

8:00 pm-1:10 am

1 stop22h 10m

Sofia

Sun 12/20

10:00 pm-6:25 pm

1 stop27h 25m

$541

Quickest round-trip

BostonSofia

BOS Boston Logan Intl - SOF Sofia

BOSSOF

Boston Logan Intl

Mon 11/30

8:00 pm-5:00 pm

1 stop14h 00m

Sofia

Mon 12/14

10:40 am-6:25 pm

1 stop14h 45m

$554

Washington, D.C.Sofia

IAD Washington, D.C. Dulles Intl - SOF Sofia

IADSOF

Washington, D.C. Dulles Intl

Tue 12/1

1:30 pm-8:40 am

1 stop12h 10m

Sofia

Tue 12/8

9:30 am-7:25 pm

1 stop16h 55m

$638

Washington, D.C.Sofia

IAD Washington, D.C. Dulles Intl - SOF Sofia

IADSOF

Washington, D.C. Dulles Intl

Tue 11/3

2:30 pm-3:10 pm

1 stop17h 40m

Sofia

Wed 11/11

4:00 pm-7:25 pm

1 stop34h 25m

$638

San FranciscoSofia

SFO San Francisco - SOF Sofia

SFOSOF

San Francisco

Wed 2/10

9:40 pm-10:55 pm

1 stop15h 15m

Sofia

Wed 2/24

6:25 am-12:35 pm

1 stop16h 10m

$687

San FranciscoSofia

SFO San Francisco - SOF Sofia

SFOSOF

San Francisco

Tue 2/9

9:40 pm-10:55 pm

1 stop15h 15m

Sofia

Tue 2/23

6:25 am-12:35 pm

1 stop16h 10m

$687

Los AngelesSofia

LAX Los Angeles - SOF Sofia

LAXSOF

Los Angeles

Sat 3/13

10:10 pm-5:55 pm

1 stop33h 45m

Sofia

Sat 3/27

2:35 pm-9:10 pm

1 stop15h 35m

$690

Los AngelesSofia

LAX Los Angeles - SOF Sofia

LAXSOF

Los Angeles

Mon 4/12

4:35 pm-6:00 pm

1 stop15h 25m

Sofia

Mon 4/26

5:30 am-2:35 pm

1 stop19h 05m

$690

ChicagoSofia

ORD Chicago O'Hare Intl - SOF Sofia

ORDSOF

Chicago O'Hare Intl

Tue 1/12

9:50 pm-10:55 pm

1 stop17h 05m

Sofia

Fri 1/15

2:10 pm-8:05 pm

1 stop13h 55m

$706

ChicagoSofia

ORD Chicago O'Hare Intl - SOF Sofia

ORDSOF

Chicago O'Hare Intl

Wed 1/13

11:25 am-1:15 pm

2 stops17h 50m

Sofia

Fri 1/15

2:10 pm-8:05 pm

1 stop13h 55m

$707

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 February. Flight prices, which tend to average around $599, are often lower during this time because this is during the off-season. If you aren’t able to travel during the month of February, then book flights to Sofia from United States during January instead. Flights to Sofia in January, while not as cheap as those in February, still average around $620.

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 $737 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 $686 on momondo.

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

You could potentially save up to 41% 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

Best Price Found	$205
Fastest flight time	11h 25m
Direct flights	None

The best one-way flight to Sofia from United States in the past 72 hours is $205. The best round-trip flight deal from United States to Sofia found on momondo in the last 72 hours is $541.

The fastest flight from United States to Sofia takes 11h 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

Frequently asked questions about flying from the 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 October 2026, 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
Austrian Airlines	PriceFrom $394	Free Cancellation	Rating 7.6 980 reviews	Search Austrian Airlines flights
Air France	PriceFrom $396	Free Cancellation	Rating 7.5 1,651 reviews	Search Air France flights
United Airlines	PriceFrom $397	Free Cancellation	Rating 7.4 10,365 reviews	Search United Airlines flights
KLM	PriceFrom $403	Free Cancellation	Rating 7.8 1,588 reviews	Search KLM flights
SWISS	PriceFrom $410	Free Cancellation	Rating 7.5 2,104 reviews	Search SWISS flights
LOT	PriceFrom $413	Free Cancellation	Rating 7.6 1,192 reviews	Search LOT flights
Lufthansa	PriceFrom $416	Free Cancellation	Rating 6.8 8,278 reviews	Search Lufthansa flights
British Airways	PriceFrom $421	Free Cancellation	Rating 6.7 8,261 reviews	Search British Airways flights
JetBlue	PriceFrom $478	Free Cancellation	Rating 7.1 3,053 reviews	Search JetBlue flights
Turkish Airlines	PriceFrom $516	Free Cancellation	Rating 7.4 4,455 reviews	Search Turkish Airlines 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.