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 Boston to Sofia takes 10h 10m on average. On the other hand, flying from New York to Sofia takes 10h 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 October 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.

$186 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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2:16 pm - 6:00 pmBOS-SOF

20h 44m2 stops

7:55 am - 2:05 pmSOF-BOS

13h 10m1 stop

$325Austrian Airlines

Find Deal

Tue, Nov 4 - Tue, Nov 18

8:40 pm - 6:20 pmBOS-SOF

14h 40m1 stop

2:00 pm - 6:35 pmSOF-BOS

11h 35m1 stop

$348Lufthansa

Find Deal

Tue, Nov 4 - Tue, Nov 18

10:35 pm - 5:50 pmEWR-SOF

12h 15m1 stop

6:35 pm - 8:25 pmSOF-EWR

32h 50m1 stop

$384LOT

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

$389LOT

Find Deal

Wed, Jan 14 - Wed, Jan 28

8:40 pm - 6:20 pmBOS-SOF

14h 40m1 stop

7:55 am - 2:05 pmSOF-BOS

13h 10m1 stop

$392United Airlines

Find Deal

Mon, Dec 1 - Tue, Feb 24

8:40 pm - 10:45 pmBOS-SOF

19h 05m1 stop

6:00 am - 7:42 pmSOF-BOS

20h 42m2 stops

$400United Airlines

Find Deal

Mon, Dec 1 - Tue, Feb 24

12:25 am - 8:50 pmEWR-SOF

13h 25m1 stop

9:35 am - 10:30 pmSOF-EWR

19h 55m1 stop

$510Turkish Airlines

Find Deal

Tue, Jan 13 - Wed, Jan 28

9:15 pm - 3:10 pmIAD-SOF

34h 55m1 stop

9:35 am - 7:20 pmSOF-IAD

16h 45m1 stop

$512Turkish Airlines

Find Deal

Wed, Nov 5 - Wed, Nov 12

4:05 pm - 2:05 pmLAS-SOF

36h 00m1 stop

7:00 am - 2:15 pmSOF-LAS

17h 15m1 stop

$534KLM

Find Deal

Thu, Nov 27 - Thu, Dec 4

9:33 am - 2:05 pmLAS-SOF

18h 32m2 stops

7:00 am - 2:15 pmSOF-LAS

17h 15m1 stop

$539KLM

Find Deal

Thu, Nov 27 - Thu, Dec 4

Austrian Airlines flights from United States to Sofia

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

Austrian Airlines

Nov 4

BOS2:16 pmBoston Logan Intl

20h 44m

2 stops

SOF6:00 pmSofia

Nov 18

SOF7:55 amSofia

13h 10m

1 stop

BOS2:05 pmBoston Logan Intl

$325

Find similar

Austrian Airlines

Nov 5

EWR5:55 pmNewark

17h 05m

1 stop

SOF6:00 pmSofia

Nov 19

SOF7:55 amSofia

13h 00m

1 stop

EWR1:55 pmNewark

$355

Find similar

Austrian Airlines

Oct 26

EWR6:55 pmNewark

17h 05m

1 stop

SOF6:00 pmSofia

Nov 10

SOF6:45 pmSofia

26h 10m

1 stop

EWR1:55 pmNewark

$393

Find similar

Air Canada flights from United States to Sofia

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

Air Canada

Nov 30

BOS5:30 amBoston Logan Intl

24h 40m

2 stops

SOF1:10 pmSofia

Feb 25

SOF2:00 pmSofia

26h 32m

2 stops

BOS9:32 amBoston Logan Intl

$394

Find similar

Air Canada

Nov 5

BOS4:35 pmBoston Logan Intl

18h 45m

2 stops

SOF6:20 pmSofia

Nov 19

SOF2:00 pmSofia

26h 32m

2 stops

BOS9:32 amBoston Logan Intl

$399

Find similar

Air Canada

Dec 3

BOS5:30 amBoston Logan Intl

29h 50m

2 stops

SOF6:20 pmSofia

Feb 24

SOF6:00 amSofia

34h 57m

2 stops

BOS9:57 amBoston Logan Intl

$407

Find similar

Fly from

Fly to

Route

Depart

Return

Price

BostonSofia

BOS - SOF

BOSSOF

Boston Logan Intl

Tue 11/4

2:16 pm-6:00 pm

2 stops20h 44m

Sofia

Tue 11/18

7:55 am-2:05 pm

1 stop13h 10m

$325

BostonSofia

BOS - SOF

BOSSOF

Boston Logan Intl

Tue 11/4

8:40 pm-6:20 pm

1 stop14h 40m

Sofia

Tue 11/18

2:00 pm-6:35 pm

1 stop11h 35m

$348

NewarkSofia

EWR - SOF

EWRSOF

Newark

Sun 11/23

10:35 pm-5:50 pm

1 stop12h 15m

Sofia

Mon 12/8

6:35 pm-8:25 pm

1 stop32h 50m

$384

NewarkSofia

EWR - SOF

EWRSOF

Newark

Wed 1/14

11:10 pm-5:50 pm

1 stop11h 40m

Sofia

Wed 1/28

2:35 pm-9:00 pm

1 stop13h 25m

$389

BostonSofia

BOS - SOF

BOSSOF

Boston Logan Intl

Mon 12/1

8:40 pm-6:20 pm

1 stop14h 40m

Sofia

Tue 2/24

7:55 am-2:05 pm

1 stop13h 10m

$392

BostonSofia

BOS - SOF

BOSSOF

Boston Logan Intl

Mon 12/1

8:40 pm-10:45 pm

1 stop19h 05m

Sofia

Tue 2/24

6:00 am-7:42 pm

2 stops20h 42m

$400

NewarkSofia

EWR - SOF

EWRSOF

Newark

Tue 1/13

12:25 am-8:50 pm

1 stop13h 25m

Sofia

Wed 1/28

9:35 am-10:30 pm

1 stop19h 55m

$510

Washington, D.C.Sofia

IAD - SOF

IADSOF

Washington, D.C. Dulles Intl

Wed 11/5

9:15 pm-3:10 pm

1 stop34h 55m

Sofia

Wed 11/12

9:35 am-7:20 pm

1 stop16h 45m

$512

Las VegasSofia

LAS - SOF

LASSOF

Las Vegas Harry Reid Intl

Thu 11/27

4:05 pm-2:05 pm

1 stop36h 00m

Sofia

Thu 12/4

7:00 am-2:15 pm

1 stop17h 15m

$534

Las VegasSofia

LAS - SOF

LASSOF

Las Vegas Harry Reid Intl

Thu 11/27

9:33 am-2:05 pm

2 stops18h 32m

Sofia

Thu 12/4

7:00 am-2:15 pm

1 stop17h 15m

$539

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 March instead. Flights to Sofia in March, while not as cheap as those in September, still average around $635.

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 $715 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 26% 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 October 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
SWISS	PriceFrom $401	Free Cancellation	Rating 7.5 1,772 reviews	Search SWISS flights
Austrian Airlines	PriceFrom $405	Free Cancellation	Rating 7.6 855 reviews	Search Austrian Airlines flights
Air France	PriceFrom $416	Free Cancellation	Rating 7.4 1,476 reviews	Search Air France flights
United Airlines	PriceFrom $428	Free Cancellation	Rating 7.4 8,982 reviews	Search United Airlines flights
KLM	PriceFrom $430	Free Cancellation	Rating 7.7 1,404 reviews	Search KLM flights
LOT	PriceFrom $437	Free Cancellation	Rating 7.6 1,133 reviews	Search LOT flights
Lufthansa	PriceFrom $464	Free Cancellation	Rating 6.8 7,497 reviews	Search Lufthansa flights
Turkish Airlines	PriceFrom $489	Free Cancellation	Rating 7.3 4,010 reviews	Search Turkish Airlines flights
British Airways	PriceFrom $492	Free Cancellation	Rating 6.7 7,457 reviews	Search British Airways flights
ITA Airways	PriceFrom $505	Free Cancellation	Rating 6.7 1,068 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.