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

Turkish Airlines, Lufthansa, and United Airlines 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 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 Boston to Sofia takes 10h 10m on average. On the other hand, flying from New York to Sofia takes 11h 25m 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 September 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.

$206 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.

9:20 pm - 10:35 pmBOS Boston Logan Intl-SOF Sofia

18h 15m1 stop Dublin

11:00 pm - 1:55 pmSOF Sofia-BOS Boston Logan Intl

21h 55m1 stop Dublin

$547Multiple Airlines

Wed, Nov 18 - Thu, Nov 26

11:15 am - 10:35 pmBOS Boston Logan Intl-SOF Sofia

28h 20m2 stops Toronto Pearson Intl Dublin

11:00 pm - 1:45 pmSOF Sofia-BOS Boston Logan Intl

21h 45m2 stops Dublin Frankfurt am Main

$569Multiple Airlines

Wed, Nov 18 - Thu, Nov 26

6:05 pm - 4:20 pmIAD Washington, D.C. Dulles Intl-SOF Sofia

15h 15m1 stop London Heathrow

5:15 pm - 3:40 pmSOF Sofia-IAD Washington, D.C. Dulles Intl

29h 25m1 stop London Heathrow

$589British Airways

Sun, Nov 8 - Mon, Nov 23

9:50 pm - 8:10 pmLAX Los Angeles-SOF Sofia

37h 20m1 stop London Heathrow

5:15 pm - 3:50 pmSOF Sofia-LAX Los Angeles

32h 35m1 stop London Heathrow

$589British Airways

Mon, Oct 26 - Mon, Nov 9

6:10 pm - 11:55 pmIAD Washington, D.C. Dulles Intl-SOF Sofia

22h 45m1 stop Vienna Intl

7:55 am - 2:10 pmSOF Sofia-IAD Washington, D.C. Dulles Intl

13h 15m1 stop Vienna Intl

$606Austrian Airlines

Tue, Dec 1 - Tue, Dec 8

6:00 pm - 6:00 pmIAD Washington, D.C. Dulles Intl-SOF Sofia

17h 00m1 stop Vienna Intl

7:55 am - 2:10 pmSOF Sofia-IAD Washington, D.C. Dulles Intl

13h 15m1 stop Vienna Intl

$606Austrian Airlines

Wed, Nov 4 - Wed, Nov 11

10:55 pm - 6:20 pmIAD Washington, D.C. Dulles Intl-SOF Sofia

12h 25m1 stop Munich Franz Josef Strauss

2:00 pm - 8:05 pmSOF Sofia-IAD Washington, D.C. Dulles Intl

13h 05m1 stop Munich Franz Josef Strauss

$608Lufthansa

Wed, Nov 25 - Wed, Dec 9

5:30 pm - 6:20 pmLAX Los Angeles-SOF Sofia

14h 50m1 stop Munich Franz Josef Strauss

6:00 am - 3:15 pmSOF Sofia-LAX Los Angeles

19h 15m1 stop Munich Franz Josef Strauss

$608Lufthansa

Sun, Nov 8 - Wed, Nov 18

5:30 pm - 10:55 pmLAX Los Angeles-SOF Sofia

19h 25m1 stop Munich Franz Josef Strauss

6:00 am - 3:15 pmSOF Sofia-LAX Los Angeles

19h 15m1 stop Munich Franz Josef Strauss

$619United Airlines

Wed, Nov 4 - Thu, Nov 12

5:30 pm - 10:55 pmLAX Los Angeles-SOF Sofia

19h 25m1 stop Munich Franz Josef Strauss

6:00 am - 3:15 pmSOF Sofia-LAX Los Angeles

19h 15m1 stop Munich Franz Josef Strauss

$619United Airlines

Wed, Nov 4 - Tue, Nov 17

Recent last minute flight deals from the United States to Sofia

Enter your travel dates to find the best prices.

5:10 pm - 10:20 amBOS Boston Logan Intl-SOF Sofia

10h 10m1 stop Zurich

11:05 am - 7:55 pmSOF Sofia-BOS Boston Logan Intl

15h 50m1 stop Zurich

$719SWISS

Tue, Sep 29 - Thu, Oct 15

6:50 pm - 10:20 amBOS Boston Logan Intl-SOF Sofia

32h 30m2 stops Montreal Pierre Elliott Trudeau Intl Zurich

11:05 am - 7:55 pmSOF Sofia-BOS Boston Logan Intl

15h 50m1 stop Zurich

$725Multiple Airlines

Tue, Sep 29 - Thu, Oct 15

12:30 am - 7:10 amJFK New York John F Kennedy Intl-SOF Sofia

23h 40m2 stops Rome Fiumicino Corfu Ioannis Kapodistrias

10:00 pm - 7:15 pmSOF Sofia-JFK New York John F Kennedy Intl

28h 15m1 stop Madrid Barajas

$749Multiple Airlines

Sun, Sep 27 - Sun, Nov 1

2:15 pm - 12:10 pmBOS Boston Logan Intl-SOF Sofia

14h 55m2 stops Washington, D.C. Dulles Intl Munich Franz Josef Strauss

6:10 am - 3:10 pmSOF Sofia-BOS Boston Logan Intl

16h 00m2 stops Munich Franz Josef Strauss Zurich

$754United Airlines

Tue, Sep 29 - Thu, Oct 15

6:47 pm - 6:40 pmTPA Tampa-SOF Sofia

16h 53m2 stops Washington, D.C. Dulles Intl Munich Franz Josef Strauss

6:10 am - 5:40 pmSOF Sofia-TPA Tampa

18h 30m2 stops Munich Franz Josef Strauss Zurich

$772Lufthansa

Tue, Sep 29 - Sun, Oct 11

5:40 pm - 6:10 pmEWR Newark-SOF Sofia

17h 30m1 stop Vienna Intl

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

13h 00m1 stop Vienna Intl

$791Austrian Airlines

Mon, Sep 28 - Sun, Nov 1

5:55 pm - 6:00 pmTPA Tampa-SOF Sofia

17h 05m1 stop Frankfurt am Main

6:10 am - 5:40 pmSOF Sofia-TPA Tampa

18h 30m2 stops Munich Franz Josef Strauss Zurich

$795Lufthansa

Tue, Sep 29 - Sun, Oct 11

2:55 pm - 12:10 pmEWR Newark-SOF Sofia

14h 15m2 stops Washington, D.C. Dulles Intl Munich Franz Josef Strauss

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

13h 00m1 stop Vienna Intl

$819United Airlines

Mon, Sep 28 - Sun, Nov 1

4:15 pm - 12:15 pmJFK New York John F Kennedy Intl-SOF Sofia

13h 00m1 stop Zurich

3:00 pm - 2:15 pmSOF Sofia-JFK New York John F Kennedy Intl

29h 15m1 stop Zurich

$823SWISS

Mon, Sep 28 - Mon, Oct 26

9:45 pm - 6:10 pmJFK New York John F Kennedy Intl-SOF Sofia

13h 25m1 stop Vienna Intl

12:25 pm - 8:05 pmSOF Sofia-JFK New York John F Kennedy Intl

14h 40m1 stop Vienna Intl

$854Austrian Airlines

Sat, Sep 26 - Sun, Oct 11

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Lufthansa flights from United States to Sofia

Our best Lufthansa deals on United States to Sofia flight tickets

Lufthansa

Nov 25

IAD10:55 pmWashington, D.C. Dulles Intl

12h 25m

1 stop

SOF6:20 pmSofia

Dec 9

SOF2:00 pmSofia

13h 05m

1 stop

IAD8:05 pmWashington, D.C. Dulles Intl

$608

Lufthansa

Mar 3

LAX5:30 pmLos Angeles

19h 25m

1 stop

SOF10:55 pmSofia

Mar 10

SOF6:00 amSofia

19h 15m

1 stop

LAX3:15 pmLos Angeles

$613

Lufthansa

Nov 8

LAX5:30 pmLos Angeles

14h 50m

1 stop

SOF6:20 pmSofia

Nov 17

SOF6:00 amSofia

19h 15m

1 stop

LAX3:15 pmLos Angeles

$616

SWISS flights from United States to Sofia

Our best SWISS deals on United States to Sofia flight tickets

SWISS

Jan 10

SFO7:25 pmSan Francisco

31h 50m

2 stops

SOF1:15 pmSofia

Jan 25

SOF3:00 pmSofia

35h 30m

1 stop

SFO4:30 pmSan Francisco

$623

SWISS

Oct 26

SFO8:25 pmSan Francisco

31h 50m

2 stops

SOF1:15 pmSofia

Nov 5

SOF4:15 pmSofia

34h 15m

1 stop

SFO4:30 pmSan Francisco

$644

SWISS

Oct 19

MIA7:40 pmMiami

31h 40m

1 stop

SOF10:20 amSofia

Nov 2

SOF3:00 pmSofia

33h 30m

1 stop

MIA5:30 pmMiami

$650

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

BostonSofia

BOS Boston Logan Intl - SOF Sofia

BOSSOF

Boston Logan Intl

Wed 11/18

9:20 pm-10:35 pm

1 stop18h 15m

Sofia

Thu 11/26

11:00 pm-1:55 pm

1 stop21h 55m

$547

BostonSofia

BOS Boston Logan Intl - SOF Sofia

BOSSOF

Boston Logan Intl

Wed 11/18

11:15 am-10:35 pm

2 stops28h 20m

Sofia

Thu 11/26

11:00 pm-1:45 pm

2 stops21h 45m

$569

Washington, D.C.Sofia

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

IADSOF

Washington, D.C. Dulles Intl

Sun 11/8

6:05 pm-4:20 pm

1 stop15h 15m

Sofia

Mon 11/23

5:15 pm-3:40 pm

1 stop29h 25m

$589

Los AngelesSofia

LAX Los Angeles - SOF Sofia

LAXSOF

Los Angeles

Mon 10/26

9:50 pm-8:10 pm

1 stop37h 20m

Sofia

Mon 11/9

5:15 pm-3:50 pm

1 stop32h 35m

$589

Washington, D.C.Sofia

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

IADSOF

Washington, D.C. Dulles Intl

Tue 12/1

6:10 pm-11:55 pm

1 stop22h 45m

Sofia

Tue 12/8

7:55 am-2:10 pm

1 stop13h 15m

$606

Washington, D.C.Sofia

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

IADSOF

Washington, D.C. Dulles Intl

Wed 11/4

6:00 pm-6:00 pm

1 stop17h 00m

Sofia

Wed 11/11

7:55 am-2:10 pm

1 stop13h 15m

$606

Quickest round-trip

Washington, D.C.Sofia

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

IADSOF

Washington, D.C. Dulles Intl

Wed 11/25

10:55 pm-6:20 pm

1 stop12h 25m

Sofia

Wed 12/9

2:00 pm-8:05 pm

1 stop13h 05m

$608

Los AngelesSofia

LAX Los Angeles - SOF Sofia

LAXSOF

Los Angeles

Sun 11/8

5:30 pm-6:20 pm

1 stop14h 50m

Sofia

Wed 11/18

6:00 am-3:15 pm

1 stop19h 15m

$608

Los AngelesSofia

LAX Los Angeles - SOF Sofia

LAXSOF

Los Angeles

Wed 11/4

5:30 pm-10:55 pm

1 stop19h 25m

Sofia

Thu 11/12

6:00 am-3:15 pm

1 stop19h 15m

$619

Los AngelesSofia

LAX Los Angeles - SOF Sofia

LAXSOF

Los Angeles

Wed 11/4

5:30 pm-10:55 pm

1 stop19h 25m

Sofia

Tue 11/17

6:00 am-3:15 pm

1 stop19h 15m

$619

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 $598, 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 $619.

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 $723 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 $601 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	$206
Fastest flight time	10h 10m
Direct flights	None

The best one-way flight to Sofia from United States in the past 72 hours is $206. The best round-trip flight deal from United States to Sofia found on momondo in the last 72 hours is $547.

The fastest flight from United States to Sofia takes 10h 10m

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 September 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 $387	Free Cancellation	Rating 7.6 967 reviews	Search Austrian Airlines flights
United Airlines	PriceFrom $394	Free Cancellation	Rating 7.4 10,233 reviews	Search United Airlines flights
Air France	PriceFrom $394	Free Cancellation	Rating 7.5 1,651 reviews	Search Air France flights
KLM	PriceFrom $403	Free Cancellation	Rating 7.8 1,576 reviews	Search KLM flights
SWISS	PriceFrom $410	Free Cancellation	Rating 7.5 2,081 reviews	Search SWISS flights
LOT	PriceFrom $413	Free Cancellation	Rating 7.6 1,202 reviews	Search LOT flights
Lufthansa	PriceFrom $415	Free Cancellation	Rating 6.8 8,234 reviews	Search Lufthansa flights
British Airways	PriceFrom $421	Free Cancellation	Rating 6.7 8,226 reviews	Search British Airways flights
JetBlue	PriceFrom $478	Free Cancellation	Rating 7.1 3,039 reviews	Search JetBlue flights
Turkish Airlines	PriceFrom $516	Free Cancellation	Rating 7.4 4,463 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.