How long is the flight from United States to Bulgaria?

Flight times from United States to Bulgaria vary, but if you’re flying out of Boston and flying into Sofia (one of the most popular routes), then the duration is 10h 15m on average. Another popular route from United States to Bulgaria is flying from New York to Sofia, which will take roughly 10h 40m. Keep in mind that layovers or delays could extend your travel time.

What airlines fly to Bulgaria?

Lufthansa, Turkish Airlines and United Airlines are the top three most popular airlines that fly to Bulgaria from United States according to our data. Lufthansa is the first choice among our users, with 42% of people opting to fly with this airline when traveling to Bulgaria. Keep in mind that there are 15 different airlines that fly to Bulgaria on a routine basis, so you have a few additional options to choose from.

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

British Airways, KLM, and Lufthansa are the most popular carriers operating from United States to Bulgaria

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

Prices for flights from United States to Bulgaria refresh daily.

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

The number of operators available for flights from United States to Bulgaria is 12 as of December 2025.

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

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 Bulgaria.

What documentation or ID do you need to fly to Bulgaria?

The required travel and health documents for your Bulgaria trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Bulgaria. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

$223 Cheap Flights from the United States to Bulgaria in 2025/26

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2:20 pm - 1:15 pm

BOS

SOF

15h 55m2 stops

12:35 pm - 2:05 pm

SOF

BOS

32h 30m1 stop

$331Multiple Airlines

Mon, Feb 9 - Mon, Feb 23

2:20 pm - 1:15 pm

BOS

SOF

15h 55m2 stops

2:00 pm - 6:35 pm

SOF

BOS

11h 35m1 stop

$337Lufthansa

Wed, Jan 21 - Wed, Feb 4

6:00 pm - 11:55 pm

EWR

SOF

22h 55m2 stops

7:55 am - 1:55 pm

SOF

EWR

13h 00m1 stop

$340Austrian Airlines

Wed, Feb 4 - Wed, Feb 11

5:55 pm - 6:00 pm

EWR

SOF

17h 05m1 stop

6:45 pm - 1:55 pm

SOF

EWR

26h 10m1 stop

$355Austrian Airlines

Mon, Jan 19 - Mon, Jan 26

10:35 pm - 5:50 pm

EWR

SOF

12h 15m1 stop

2:35 pm - 9:00 pm

SOF

EWR

13h 25m1 stop

$376LOT

Tue, Jan 13 - Wed, Jan 21

7:15 am - 1:15 pm

LGA

SOF

23h 00m2 stops

7:55 am - 9:47 am

SOF

LGA

32h 52m2 stops

$464United Airlines

Mon, Jan 19 - Sun, Jan 25

4:25 pm - 10:45 pm

JFK

SOF

23h 20m2 stops

7:55 am - 2:15 pm

SOF

JFK

13h 20m1 stop

$464United Airlines

Thu, Feb 5 - Thu, Feb 26

10:35 pm - 5:50 pm

JFK

SOF

12h 15m1 stop

2:35 pm - 8:35 pm

SOF

JFK

13h 00m1 stop

$470LOT

Thu, Jan 15 - Sun, Jan 25

9:15 pm - 3:10 pm

IAD

SOF

34h 55m1 stop

4:00 pm - 7:20 pm

SOF

IAD

34h 20m1 stop

$530Turkish Airlines

Wed, Feb 11 - Wed, Feb 25

9:15 pm - 8:45 am

IAD

SOF

28h 30m1 stop

9:35 am - 8:20 pm

SOF

IAD

16h 45m1 stop

$535Turkish Airlines

Sun, Mar 1 - Fri, Mar 13

SWISS flights from United States to Bulgaria

Our best SWISS deals on United States to Bulgaria flight tickets

SWISS

Mar 25

BOS10:50 pmBoston Logan Intl

10h 25m

1 stop

SOF3:15 pmSofia

Apr 8

SOF11:05 amSofia

15h 50m

1 stop

BOS7:55 pmBoston Logan Intl

$365

Find similar

SWISS

Dec 31

EWR6:40 pmNewark

13h 35m

1 stop

SOF3:15 pmSofia

Jan 12

SOF3:00 pmSofia

29h 55m

1 stop

EWR1:55 pmNewark

$387

Find similar

SWISS

Apr 14

BOS5:05 pmBoston Logan Intl

10h 15m

1 stop

SOF10:20 amSofia

Apr 27

SOF12:55 pmSofia

38h 00m

2 stops

BOS7:55 pmBoston Logan Intl

$404

Find similar

LOT flights from United States to Bulgaria

Our best LOT deals on United States to Bulgaria flight tickets

LOT

Jan 13

EWR10:35 pmNewark

12h 15m

1 stop

SOF5:50 pmSofia

Jan 21

SOF2:35 pmSofia

13h 25m

1 stop

EWR9:00 pmNewark

$376

Find similar

LOT

Jan 20

EWR10:35 pmNewark

12h 15m

1 stop

SOF5:50 pmSofia

Jan 26

SOF6:35 pmSofia

32h 50m

1 stop

EWR8:25 pmNewark

$390

Find similar

LOT

Jan 15

JFK10:35 pmNew York John F Kennedy Intl

12h 15m

1 stop

SOF5:50 pmSofia

Jan 25

SOF2:35 pmSofia

13h 00m

1 stop

JFK8:35 pmNew York John F Kennedy Intl

$470

Find similar

momondo Fare Finder

Use the filters below to find and compare flights from the United States to Bulgaria that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

BostonSofia

BOS - SOF

BOSSOF

Boston Logan Intl

Mon 2/9

2:20 pm-1:15 pm

2 stops15h 55m

Sofia

Mon 2/23

12:35 pm-2:05 pm

1 stop32h 30m

$331

BostonSofia

BOS - SOF

BOSSOF

Boston Logan Intl

Wed 1/21

2:20 pm-1:15 pm

2 stops15h 55m

Sofia

Wed 2/4

2:00 pm-6:35 pm

1 stop11h 35m

$337

NewarkSofia

EWR - SOF

EWRSOF

Newark

Wed 2/4

6:00 pm-11:55 pm

2 stops22h 55m

Sofia

Wed 2/11

7:55 am-1:55 pm

1 stop13h 00m

$340

NewarkSofia

EWR - SOF

EWRSOF

Newark

Mon 1/19

5:55 pm-6:00 pm

1 stop17h 05m

Sofia

Mon 1/26

6:45 pm-1:55 pm

1 stop26h 10m

$355

NewarkSofia

EWR - SOF

EWRSOF

Newark

Tue 1/13

10:35 pm-5:50 pm

1 stop12h 15m

Sofia

Wed 1/21

2:35 pm-9:00 pm

1 stop13h 25m

$376

New YorkSofia

LGA - SOF

LGASOF

New York LaGuardia

Mon 1/19

7:15 am-1:15 pm

2 stops23h 00m

Sofia

Sun 1/25

7:55 am-9:47 am

2 stops32h 52m

$464

New YorkSofia

JFK - SOF

JFKSOF

New York John F Kennedy Intl

Thu 2/5

4:25 pm-10:45 pm

2 stops23h 20m

Sofia

Thu 2/26

7:55 am-2:15 pm

1 stop13h 20m

$464

New YorkSofia

JFK - SOF

JFKSOF

New York John F Kennedy Intl

Thu 1/15

10:35 pm-5:50 pm

1 stop12h 15m

Sofia

Sun 1/25

2:35 pm-8:35 pm

1 stop13h 00m

$470

Washington, D.C.Sofia

IAD - SOF

IADSOF

Washington, D.C. Dulles Intl

Wed 2/11

9:15 pm-3:10 pm

1 stop34h 55m

Sofia

Wed 2/25

4:00 pm-7:20 pm

1 stop34h 20m

$530

Washington, D.C.Sofia

IAD - SOF

IADSOF

Washington, D.C. Dulles Intl

Sun 3/1

9:15 pm-8:45 am

1 stop28h 30m

Sofia

Fri 3/13

9:35 am-8:20 pm

1 stop16h 45m

$535

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

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 Bulgaria?

If you aren’t able to travel to Bulgaria during the month of November, then flying in September is also cheap. Prices for this month can be found on momondo for an average of $587.

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

The cheapest day to depart from United States to Bulgaria is on a Monday when prices can be found for as low as $773. On the other hand, Saturday is the most expensive day to depart from United States because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $1,099.

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

In the evening is the cheapest time of day to fly from United States to Bulgaria when you can find flight prices for as low as $695. Flying to Bulgaria in the evening is an ideal time because this is during off-peak travel hours. Flights to Bulgaria are more costly in the afternoon, with an average ticket price of $942. Departure times in the afternoon fall within the peak daily travel times, which is why tickets can be more expensive.

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

You are more likely to see cheaper flights to Bulgaria from United States when booking weeks ahead of your departure date. In general, you can expect to find flights to Bulgaria for around $710 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Bulgaria from United States for as low as $637 on momondo.

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

You could potentially save up to 36% on your flight if you consider stops on a United States to Bulgaria flight.

Cheap United States to Bulgaria flight deals and tips

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

Fastest flight time	10h 15m
Direct flights	None

The fastest flight from United States to Bulgaria takes 10h 15m

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

Search flight deals

When did momondo last update prices for flights from United States to Bulgaria?
Prices for flights from United States to Bulgaria refresh daily.
How many operators does momondo search for flights from United States to Bulgaria?
The number of operators available for flights from United States to Bulgaria is 12 as of December 2025.
How old do you have to be to fly from United States to Bulgaria?
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 Bulgaria.
What documentation or ID do you need to fly to Bulgaria?
The required travel and health documents for your Bulgaria trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Bulgaria. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

Best airlines flying from United States to Bulgaria

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

Airline	Rating	Free Cancellation	Price
SWISS	PriceFrom $353	Free Cancellation	Rating 7.5 1,817 reviews	Search SWISS flights
British Airways	PriceFrom $356	Free Cancellation	Rating 6.7 7,607 reviews	Search British Airways flights
Austrian Airlines	PriceFrom $356	Free Cancellation	Rating 7.6 880 reviews	Search Austrian Airlines flights
KLM	PriceFrom $380	Free Cancellation	Rating 7.7 1,434 reviews	Search KLM flights
Air France	PriceFrom $416	Free Cancellation	Rating 7.4 1,513 reviews	Search Air France flights
United Airlines	PriceFrom $428	Free Cancellation	Rating 7.4 9,107 reviews	Search United Airlines flights
LOT	PriceFrom $437	Free Cancellation	Rating 7.5 1,153 reviews	Search LOT flights
Lufthansa	PriceFrom $449	Free Cancellation	Rating 6.8 7,649 reviews	Search Lufthansa flights
JetBlue	PriceFrom $478	Free Cancellation	Rating 7.2 2,898 reviews	Search JetBlue flights
ITA Airways	PriceFrom $505	Free Cancellation	Rating 6.7 1,112 reviews	Search ITA Airways flights

Why use momondo?

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

Finding the right flight to Bulgaria from United States is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to Bulgaria quick and easy, saving you time and money.

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

Yes. momondo allows you to filter the results for United States to Bulgaria flights to just show those with flexible booking policies.

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

momondo helps you find the best flight between United States and Bulgaria by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

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

Yes momondo offers price alerts on flights to Bulgaria 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.

An easier way to manage your Bulgaria trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

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Find better results for your trip to Bulgaria

Popular cities in Bulgaria

Flights to Sofiafrom $331

Flights to Varnafrom $385

Flights to Burgasfrom $788

Flights to Plovdivfrom $704

Cheap flights from the United States to Bulgaria from $223

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from the United States to Bulgaria departing on 1/9. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

Big names and deals

Big names and deals

Filter for what you want

Filter for what you want

Trusted and free

Trusted and free

Price Alerts

Price Alerts

Find the cheapest flights from the United States to Bulgaria

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

Recent one-way flight deals from the United States to Bulgaria

Recent last minute flight deals from the United States to Bulgaria

SWISS flights from United States to Bulgaria

Our best SWISS deals on United States to Bulgaria flight tickets

LOT flights from United States to Bulgaria

Our best LOT deals on United States to Bulgaria flight tickets

momondo Fare Finder

Use the filters below to find and compare flights from the United States to Bulgaria that are best for you.

See travel insights to Bulgaria from

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

What is the cheapest month to fly to Bulgaria?

If you aren’t able to travel to Bulgaria during the month of November, then flying in September is also cheap. Prices for this month can be found on momondo for an average of $587.

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

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

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

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

You could potentially save up to 36% on your flight if you consider stops on a United States to Bulgaria flight.

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

British Airways, KLM, and Lufthansa are the most popular carriers operating from United States to Bulgaria

What airlines fly to Bulgaria?

How long is the flight from United States to Bulgaria?

Cheap United States to Bulgaria flight deals and tips

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

Fastest flight time

Direct flights

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

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

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

What documentation or ID do you need to fly to Bulgaria?

Best airlines flying from United States to Bulgaria

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

Why use momondo?

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

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

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

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

An easier way to manage your Bulgaria trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to Bulgaria

Popular cities in Bulgaria

Popular flights according to clicks in the last 7 days on momondo