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

Air Serbia 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 42% of people opting to fly with this airline when traveling to Sofia. Keep in mind that there are 13 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 10h 40m on average. On the other hand, flying from Boston to Sofia takes 14h 40m 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 2025, there are 11 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.

$244 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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4:00 pm - 6:00 pmEWR-SOF

19h 00m2 stops

6:45 pm - 2:15 pmSOF-EWR

26h 30m1 stop

$326Austrian Airlines

Find Deal

Tue, Dec 9 - Mon, Dec 15

1:30 pm - 11:50 amBOS-SOF

15h 20m2 stops

7:55 am - 2:05 pmSOF-BOS

13h 10m1 stop

$340Austrian Airlines

Find Deal

Tue, Feb 3 - Tue, Feb 17

8:40 pm - 6:20 pmBOS-SOF

14h 40m1 stop

2:00 pm - 6:35 pmSOF-BOS

11h 35m1 stop

$352Lufthansa

Find Deal

Sun, Nov 16 - Fri, Dec 5

8:40 pm - 6:00 pmBOS-SOF

14h 20m2 stops

2:00 pm - 6:35 pmSOF-BOS

11h 35m1 stop

$368Lufthansa

Find Deal

Sun, Nov 16 - Fri, Dec 5

10:35 pm - 1:50 pmEWR-SOF

32h 15m1 stop

6:35 pm - 8:25 pmSOF-EWR

32h 50m1 stop

$374LOT

Find Deal

Sun, Nov 23 - Mon, Dec 8

11:10 pm - 5:50 pmEWR-SOF

11h 40m1 stop

2:35 pm - 9:00 pmSOF-EWR

13h 25m1 stop

$375LOT

Find Deal

Wed, Dec 3 - Wed, Dec 10

5:15 pm - 6:20 pmEWR-SOF

18h 05m1 stop

7:55 am - 2:15 pmSOF-EWR

13h 20m1 stop

$391United Airlines

Find Deal

Sun, Nov 16 - Tue, Dec 2

5:30 am - 1:00 pmBOS-SOF

24h 30m2 stops

6:05 am - 6:35 pmSOF-BOS

19h 30m1 stop

$396United Airlines

Find Deal

Sun, Nov 16 - Fri, Dec 5

1:30 pm - 8:50 pmIAD-SOF

24h 20m1 stop

4:00 pm - 7:20 pmSOF-IAD

34h 20m1 stop

$502Turkish Airlines

Find Deal

Tue, Nov 18 - Thu, Dec 11

1:30 pm - 8:50 pmIAD-SOF

24h 20m1 stop

9:40 pm - 11:45 amSOF-IAD

21h 05m1 stop

$538Turkish Airlines

Find Deal

Tue, Nov 18 - Tue, Nov 25

LOT flights from United States to Sofia

Our best LOT deals on United States to Sofia flight tickets

LOT

Nov 23

EWR10:35 pmNewark

32h 15m

1 stop

SOF1:50 pmSofia

Dec 8

SOF6:35 pmSofia

32h 50m

1 stop

EWR8:25 pmNewark

$374

Find similar

LOT

Dec 3

EWR11:10 pmNewark

11h 40m

1 stop

SOF5:50 pmSofia

Dec 10

SOF2:35 pmSofia

13h 25m

1 stop

EWR9:00 pmNewark

$375

Find similar

LOT

Feb 3

EWR10:35 pmNewark

12h 15m

1 stop

SOF5:50 pmSofia

Feb 17

SOF6:35 pmSofia

33h 25m

1 stop

EWR9:00 pmNewark

$389

Find similar

Turkish Airlines flights from United States to Sofia

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

Turkish Airlines

Nov 18

IAD1:30 pmWashington, D.C. Dulles Intl

24h 20m

1 stop

SOF8:50 pmSofia

Dec 11

SOF4:00 pmSofia

34h 20m

1 stop

IAD7:20 pmWashington, D.C. Dulles Intl

$502

Find similar

Turkish Airlines

Nov 18

IAD1:30 pmWashington, D.C. Dulles Intl

18h 40m

1 stop

SOF3:10 pmSofia

Nov 25

SOF9:40 pmSofia

21h 05m

1 stop

IAD11:45 amWashington, D.C. Dulles Intl

$553

Find similar

Turkish Airlines

Nov 17

IAD1:30 pmWashington, D.C. Dulles Intl

12h 15m

1 stop

SOF8:45 amSofia

Nov 25

SOF9:40 pmSofia

21h 05m

1 stop

IAD11:45 amWashington, D.C. Dulles Intl

$562

Find similar

Fly from

Fly to

Route

Depart

Return

Price

NewarkSofia

EWR - SOF

EWRSOF

Newark

Tue 12/9

4:00 pm-6:00 pm

2 stops19h 00m

Sofia

Mon 12/15

6:45 pm-2:15 pm

1 stop26h 30m

$326

BostonSofia

BOS - SOF

BOSSOF

Boston Logan Intl

Tue 2/3

1:30 pm-11:50 am

2 stops15h 20m

Sofia

Tue 2/17

7:55 am-2:05 pm

1 stop13h 10m

$340

BostonSofia

BOS - SOF

BOSSOF

Boston Logan Intl

Sun 11/16

8:40 pm-6:20 pm

1 stop14h 40m

Sofia

Fri 12/5

2:00 pm-6:35 pm

1 stop11h 35m

$352

BostonSofia

BOS - SOF

BOSSOF

Boston Logan Intl

Sun 11/16

8:40 pm-6:00 pm

2 stops14h 20m

Sofia

Fri 12/5

2:00 pm-6:35 pm

1 stop11h 35m

$368

NewarkSofia

EWR - SOF

EWRSOF

Newark

Sun 11/23

10:35 pm-1:50 pm

1 stop32h 15m

Sofia

Mon 12/8

6:35 pm-8:25 pm

1 stop32h 50m

$374

NewarkSofia

EWR - SOF

EWRSOF

Newark

Wed 12/3

11:10 pm-5:50 pm

1 stop11h 40m

Sofia

Wed 12/10

2:35 pm-9:00 pm

1 stop13h 25m

$375

NewarkSofia

EWR - SOF

EWRSOF

Newark

Sun 11/16

5:15 pm-6:20 pm

1 stop18h 05m

Sofia

Tue 12/2

7:55 am-2:15 pm

1 stop13h 20m

$391

BostonSofia

BOS - SOF

BOSSOF

Boston Logan Intl

Sun 11/16

5:30 am-1:00 pm

2 stops24h 30m

Sofia

Fri 12/5

6:05 am-6:35 pm

1 stop19h 30m

$396

Washington, D.C.Sofia

IAD - SOF

IADSOF

Washington, D.C. Dulles Intl

Tue 11/18

1:30 pm-8:50 pm

1 stop24h 20m

Sofia

Thu 12/11

4:00 pm-7:20 pm

1 stop34h 20m

$502

Washington, D.C.Sofia

IAD - SOF

IADSOF

Washington, D.C. Dulles Intl

Tue 11/18

1:30 pm-8:50 pm

1 stop24h 20m

Sofia

Tue 11/25

9:40 pm-11:45 am

1 stop21h 05m

$538

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 September. Flight prices, which tend to average around $587, are often lower during this time because this is during the off-season. If you aren’t able to travel during the month of September, then book flights to Sofia from United States during November instead. Flights to Sofia in November, while not as cheap as those in September, still average around $619.

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 $712 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 $635 on momondo.

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

You could potentially save up to 8% 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

Direct flights	None

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 November 2025, there are 11 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 $398	Free Cancellation	Rating 7.6 865 reviews	Search Austrian Airlines flights
SWISS	PriceFrom $401	Free Cancellation	Rating 7.5 1,779 reviews	Search SWISS flights
British Airways	PriceFrom $406	Free Cancellation	Rating 6.7 7,500 reviews	Search British Airways flights
KLM	PriceFrom $407	Free Cancellation	Rating 7.7 1,405 reviews	Search KLM flights
Air France	PriceFrom $416	Free Cancellation	Rating 7.4 1,484 reviews	Search Air France flights
United Airlines	PriceFrom $428	Free Cancellation	Rating 7.4 9,007 reviews	Search United Airlines flights
LOT	PriceFrom $437	Free Cancellation	Rating 7.6 1,133 reviews	Search LOT flights
Lufthansa	PriceFrom $451	Free Cancellation	Rating 6.8 7,558 reviews	Search Lufthansa flights
Turkish Airlines	PriceFrom $497	Free Cancellation	Rating 7.3 4,032 reviews	Search Turkish Airlines flights
ITA Airways	PriceFrom $505	Free Cancellation	Rating 6.7 1,081 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.

An easier way to manage your Sofia trip

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Cheap flights from the United States to Sofia from $244

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 Sofia departing on 11/13. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

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Big names and deals

Filter for what you want

Filter for what you want

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Find the cheapest flights from the United States to Sofia

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

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

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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

What is the cheapest month to fly to Sofia?

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

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

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

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

You could potentially save up to 8% on your flight if you consider stops on a United States to Sofia flight.

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

Air Serbia and Lufthansa are the most popular carriers operating from United States to Sofia

What airlines fly to Sofia?

How long does it take to fly to Sofia?

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

Direct flights

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

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

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

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

Best airlines flying from United States to Sofia

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

Traveling to a place near Sofia?

Why use momondo?

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

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

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

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

An easier way to manage your Sofia 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

Fly your favorite airline to Sofia

Airlines are sorted and displayed according to clicks in the past 7 days on momondo