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

SWISS, British Airways, and Lufthansa 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 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.

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 Miami to Sofia takes 12h 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.

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 November 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.

$279 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.

6:00 pm - 1:10 amBOS Boston Logan Intl-SOF Sofia

24h 10m2 stops Lisbon Humberto Delgado Madrid Barajas

10:00 pm - 3:05 pmSOF Sofia-BOS Boston Logan Intl

24h 05m2 stops Madrid Barajas Lisbon Humberto Delgado

$604Multiple Airlines

Sun, Feb 7 - Sun, Feb 21

5:40 pm - 1:10 amEWR Newark-SOF Sofia

24h 30m2 stops Lisbon Humberto Delgado Madrid Barajas

4:55 pm - 3:20 pmSOF Sofia-EWR Newark

29h 25m2 stops Madrid Barajas Lisbon Humberto Delgado

$627Multiple Airlines

Fri, Nov 27 - Sun, Dec 13

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

17h 05m1 stop Munich Franz Josef Strauss

6:25 am - 1:10 pmSOF Sofia-ORD Chicago O'Hare Intl

14h 45m1 stop Frankfurt am Main

$688Lufthansa

Tue, Feb 2 - Tue, Feb 16

4:35 pm - 2:00 amLAX Los Angeles-SOF Sofia

23h 25m1 stop Warsaw Frederic Chopin

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

19h 05m1 stop Warsaw Frederic Chopin

$688LOT

Wed, Apr 7 - Wed, Apr 21

10:10 pm - 1:50 pmLAX Los Angeles-SOF Sofia

29h 40m1 stop Warsaw Frederic Chopin

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

15h 35m1 stop Warsaw Frederic Chopin

$688LOT

Wed, Mar 3 - Wed, Mar 10

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

17h 05m1 stop Munich Franz Josef Strauss

6:25 am - 2:10 pmSOF Sofia-ORD Chicago O'Hare Intl

14h 45m1 stop Frankfurt am Main

$695Lufthansa

Mon, Feb 15 - Wed, Mar 24

8:15 pm - 8:55 pmORD Chicago O'Hare Intl-SOF Sofia

16h 40m1 stop Istanbul

9:30 am - 6:20 pmSOF Sofia-ORD Chicago O'Hare Intl

16h 50m1 stop Istanbul

$697Turkish Airlines

Tue, Dec 8 - Sat, Dec 12

11:45 am - 8:40 amORD Chicago O'Hare Intl-SOF Sofia

12h 55m1 stop Istanbul

9:45 pm - 6:20 pmSOF Sofia-ORD Chicago O'Hare Intl

28h 35m1 stop Istanbul

$698Turkish Airlines

Wed, Jan 27 - Wed, Feb 17

7:35 pm - 10:20 amLAX Los Angeles-SOF Sofia

28h 45m1 stop Zurich

1:30 pm - 4:30 pmSOF Sofia-LAX Los Angeles

37h 00m1 stop Zurich

$705SWISS

Tue, Apr 6 - Tue, Apr 20

5:05 pm - 12:40 pmBOS Boston Logan Intl-SOF Sofia

12h 35m1 stop Zurich

3:50 pm - 3:30 pmSOF Sofia-BOS Boston Logan Intl

30h 40m1 stop Zurich

$783SWISS

Mon, Apr 5 - Mon, Apr 19

Recent last minute flight deals from the United States to Sofia

Enter your travel dates to find the best prices.

5:40 pm - 11:35 pmEWR Newark-SOF Sofia

22h 55m2 stops Lisbon Humberto Delgado Barcelona-El Prat

6:30 am - 10:10 pmSOF Sofia-EWR Newark

22h 40m3 stops Bergamo Orio Al Serio Madrid Barajas Lisbon Humberto Delgado

$695Multiple Airlines

Thu, Nov 12 - Mon, Dec 14

5:40 pm - 11:35 pmEWR Newark-SOF Sofia

22h 55m2 stops Lisbon Humberto Delgado Barcelona-El Prat

10:40 am - 10:10 pmSOF Sofia-EWR Newark

18h 30m2 stops Madrid Barajas Lisbon Humberto Delgado

$705Multiple Airlines

Thu, Nov 12 - Mon, Dec 14

12:45 pm - 8:55 pmLAX Los Angeles-SOF Sofia

22h 10m1 stop Istanbul

9:45 pm - 10:50 amSOF Sofia-LAX Los Angeles

23h 05m1 stop Istanbul

$744Turkish Airlines

Thu, Nov 12 - Wed, Nov 25

10:35 pm - 1:50 pmJFK New York John F Kennedy Intl-SOF Sofia

32h 15m1 stop Warsaw Frederic Chopin

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

32h 55m1 stop Warsaw Frederic Chopin

$762LOT

Thu, Nov 12 - Mon, Dec 14

10:35 pm - 1:50 pmEWR Newark-SOF Sofia

32h 15m1 stop Warsaw Frederic Chopin

6:40 pm - 8:25 pmSOF Sofia-EWR Newark

32h 45m1 stop Warsaw Frederic Chopin

$762LOT

Thu, Nov 12 - Mon, Dec 14

1:55 pm - 3:30 pmJFK New York John F Kennedy Intl-SOF Sofia

18h 35m1 stop Belgrade Nikola Tesla

4:00 pm - 11:45 amSOF Sofia-JFK New York John F Kennedy Intl

26h 45m1 stop Belgrade Nikola Tesla

$766Air Serbia

Thu, Nov 12 - Mon, Dec 14

11:45 am - 8:55 pmORD Chicago O'Hare Intl-SOF Sofia

25h 10m1 stop Istanbul

9:45 pm - 7:20 pmSOF Sofia-ORD Chicago O'Hare Intl

28h 35m1 stop Istanbul

$769Turkish Airlines

Mon, Nov 9 - Wed, Mar 17

5:55 pm - 11:50 amEWR Newark-SOF Sofia

10h 55m1 stop Vienna Intl

7:55 am - 2:15 pmSOF Sofia-EWR Newark

13h 20m1 stop Vienna Intl

$775Austrian Airlines

Sat, Nov 14 - Wed, Dec 16

5:55 pm - 6:00 pmEWR Newark-SOF Sofia

17h 05m1 stop Vienna Intl

7:55 am - 2:15 pmSOF Sofia-EWR Newark

13h 20m1 stop Vienna Intl

$777Austrian Airlines

Mon, Nov 9 - Thu, Nov 26

5:30 pm - 1:15 pmJFK New York John F Kennedy Intl-SOF Sofia

12h 45m1 stop Munich Franz Josef Strauss

6:00 am - 3:40 pmSOF Sofia-JFK New York John F Kennedy Intl

16h 40m1 stop Munich Franz Josef Strauss

$782Lufthansa

Tue, Nov 10 - Sun, Nov 15

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Lufthansa flights from United States to Sofia

Our best Lufthansa deals on United States to Sofia flight tickets

Lufthansa

Feb 2

ORD9:50 pmChicago O'Hare Intl

17h 05m

1 stop

SOF10:55 pmSofia

Feb 16

SOF6:25 amSofia

14h 45m

1 stop

ORD1:10 pmChicago O'Hare Intl

$688

Lufthansa

Feb 2

SFO9:40 pmSan Francisco

15h 15m

1 stop

SOF10:55 pmSofia

Feb 16

SOF2:00 pmSofia

15h 35m

1 stop

SFO7:35 pmSan Francisco

$700

Lufthansa

Feb 3

SFO9:40 pmSan Francisco

15h 15m

1 stop

SOF10:55 pmSofia

Feb 17

SOF6:25 amSofia

16h 10m

1 stop

SFO12:35 pmSan Francisco

$705

United Airlines flights from United States to Sofia

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

United Airlines

Feb 1

SFO9:40 pmSan Francisco

15h 15m

1 stop

SOF10:55 pmSofia

Feb 5

SOF2:10 pmSofia

16h 00m

1 stop

SFO8:10 pmSan Francisco

$725

United Airlines

Feb 2

TPA2:20 pmTampa

25h 35m

2 stops

SOF10:55 pmSofia

Feb 18

SOF6:25 amSofia

17h 10m

1 stop

TPA4:35 pmTampa

$727

United Airlines

Feb 1

SFO6:35 amSan Francisco

20h 40m

2 stops

SOF1:15 pmSofia

Feb 5

SOF2:10 pmSofia

16h 00m

1 stop

SFO8:10 pmSan Francisco

$730

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

BostonSofia

BOS Boston Logan Intl - SOF Sofia

BOSSOF

Boston Logan Intl

Sun 2/7

6:00 pm-1:10 am

2 stops24h 10m

Sofia

Sun 2/21

10:00 pm-3:05 pm

2 stops24h 05m

$604

NewarkSofia

EWR Newark - SOF Sofia

EWRSOF

Newark

Fri 11/27

5:40 pm-1:10 am

2 stops24h 30m

Sofia

Sun 12/13

4:55 pm-3:20 pm

2 stops29h 25m

$627

Quickest round-trip

ChicagoSofia

ORD Chicago O'Hare Intl - SOF Sofia

ORDSOF

Chicago O'Hare Intl

Tue 2/2

9:50 pm-10:55 pm

1 stop17h 05m

Sofia

Tue 2/16

6:25 am-1:10 pm

1 stop14h 45m

$688

Los AngelesSofia

LAX Los Angeles - SOF Sofia

LAXSOF

Los Angeles

Wed 4/7

4:35 pm-2:00 am

1 stop23h 25m

Sofia

Wed 4/21

5:30 am-2:35 pm

1 stop19h 05m

$688

Los AngelesSofia

LAX Los Angeles - SOF Sofia

LAXSOF

Los Angeles

Wed 3/3

10:10 pm-1:50 pm

1 stop29h 40m

Sofia

Wed 3/10

2:35 pm-8:10 pm

1 stop15h 35m

$688

ChicagoSofia

ORD Chicago O'Hare Intl - SOF Sofia

ORDSOF

Chicago O'Hare Intl

Mon 2/15

9:50 pm-10:55 pm

1 stop17h 05m

Sofia

Wed 3/24

6:25 am-2:10 pm

1 stop14h 45m

$695

ChicagoSofia

ORD Chicago O'Hare Intl - SOF Sofia

ORDSOF

Chicago O'Hare Intl

Tue 12/8

8:15 pm-8:55 pm

1 stop16h 40m

Sofia

Sat 12/12

9:30 am-6:20 pm

1 stop16h 50m

$697

ChicagoSofia

ORD Chicago O'Hare Intl - SOF Sofia

ORDSOF

Chicago O'Hare Intl

Wed 1/27

11:45 am-8:40 am

1 stop12h 55m

Sofia

Wed 2/17

9:45 pm-6:20 pm

1 stop28h 35m

$698

Los AngelesSofia

LAX Los Angeles - SOF Sofia

LAXSOF

Los Angeles

Tue 4/6

7:35 pm-10:20 am

1 stop28h 45m

Sofia

Tue 4/20

1:30 pm-4:30 pm

1 stop37h 00m

$705

BostonSofia

BOS Boston Logan Intl - SOF Sofia

BOSSOF

Boston Logan Intl

Mon 4/5

5:05 pm-12:40 pm

1 stop12h 35m

Sofia

Mon 4/19

3:50 pm-3:30 pm

1 stop30h 40m

$783

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 $601, 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 $642.

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 $774 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 $711 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	$279
Fastest flight time	11h 05m
Direct flights	None

The best one-way flight to Sofia from United States in the past 72 hours is $279. The best round-trip flight deal from United States to Sofia found on momondo in the last 72 hours is $604.

The fastest flight from United States to Sofia takes 11h 05m

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 November 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 7.5 981 reviews	Search Austrian Airlines flights
Air France	PriceFrom $396	Free Cancellation	Rating 7.5 1,647 reviews	Search Air France flights
United Airlines	PriceFrom $397	Free Cancellation	Rating 7.3 10,472 reviews	Search United Airlines flights
KLM	PriceFrom $403	Free Cancellation	Rating 7.8 1,594 reviews	Search KLM flights
SWISS	PriceFrom $410	Free Cancellation	Rating 7.5 2,113 reviews	Search SWISS flights
LOT	PriceFrom $413	Free Cancellation	Rating 7.5 1,192 reviews	Search LOT flights
Lufthansa	PriceFrom $418	Free Cancellation	Rating 6.8 8,294 reviews	Search Lufthansa flights
British Airways	PriceFrom $430	Free Cancellation	Rating 6.7 8,285 reviews	Search British Airways flights
JetBlue	PriceFrom $478	Free Cancellation	Rating 7.1 3,066 reviews	Search JetBlue flights
Turkish Airlines	PriceFrom $522	Free Cancellation	Rating 7.4 4,469 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.