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

Air Serbia, Air Canada, and Air France are the most popular carriers operating from United States to Sofia

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 50m on average. On the other hand, flying from Boston to Sofia takes 12h 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.

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 39% 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.

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 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.

$198 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

Round-trip

One-way

Last minute

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

8:40 pm - 6:20 pmBOS-SOF

14h 40m1 stop

6:45 pm - 2:05 pmSOF-BOS

26h 20m1 stop

$351

Find Deal

Mon, Nov 3 - Mon, Nov 17

6:25 pm - 11:50 amBOS-SOF

10h 25m1 stop

2:00 pm - 6:35 pmSOF-BOS

11h 35m1 stop

$356

Find Deal

Tue, Nov 4 - Tue, Nov 18

8:40 pm - 10:45 pmBOS-SOF

19h 05m1 stop

7:05 pm - 6:35 pmSOF-BOS

30h 30m1 stop

$395Lufthansa

Find Deal

Mon, Jan 12 - Mon, Jan 26

7:55 pm - 6:20 pmBOS-SOF

39h 25m2 stops

6:05 am - 6:35 pmSOF-BOS

19h 30m1 stop

$399United Airlines

Find Deal

Sat, Nov 8 - Thu, Nov 20

7:55 pm - 6:20 pmBOS-SOF

39h 25m2 stops

6:05 am - 3:57 pmSOF-BOS

40h 52m2 stops

$406United Airlines

Find Deal

Sat, Nov 8 - Thu, Nov 20

8:40 pm - 6:20 pmBOS-SOF

14h 40m1 stop

2:00 pm - 6:35 pmSOF-BOS

11h 35m1 stop

$414Lufthansa

Find Deal

Sat, Nov 8 - Thu, Nov 20

5:45 pm - 5:55 pmJFK-SOF

17h 10m1 stop

2:35 pm - 8:35 pmSOF-JFK

13h 00m1 stop

$467LOT

Find Deal

Tue, Oct 21 - Wed, Nov 5

12:20 am - 9:15 amJFK-SOF

25h 55m1 stop

10:05 am - 11:05 amSOF-JFK

32h 00m1 stop

$481Turkish Airlines

Find Deal

Mon, Nov 3 - Thu, Nov 13

12:35 am - 8:25 pmJFK-SOF

12h 50m1 stop

4:00 pm - 11:25 pmSOF-JFK

13h 25m1 stop

$490Turkish Airlines

Find Deal

Wed, Oct 15 - Thu, Oct 30

9:55 pm - 5:50 pmORD-SOF

35h 55m2 stops

6:35 pm - 8:00 pmSOF-ORD

33h 25m1 stop

$547LOT

Find Deal

Sun, Nov 16 - Thu, Jan 15

Air France flights from United States to Sofia

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

Air France

Nov 5

BOS3:30 pmBoston Logan Intl

15h 35m

2 stops

SOF2:05 pmSofia

Nov 19

SOF7:00 amSofia

13h 40m

1 stop

BOS1:40 pmBoston Logan Intl

$370

Find similar

Air France

Nov 4

BOS6:30 pmBoston Logan Intl

12h 25m

1 stop

SOF1:55 pmSofia

Nov 18

SOF7:10 amSofia

18h 46m

2 stops

BOS6:56 pmBoston Logan Intl

$376

Find similar

Air France

Jan 13

BOS1:10 pmBoston Logan Intl

17h 45m

2 stops

SOF1:55 pmSofia

Jan 27

SOF7:10 amSofia

18h 13m

2 stops

BOS6:23 pmBoston Logan Intl

$380

Find similar

Austrian Airlines flights from United States to Sofia

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

Austrian Airlines

Oct 15

BOS5:10 pmBoston Logan Intl

11h 30m

1 stop

SOF11:40 amSofia

Oct 29

SOF7:55 amSofia

16h 37m

2 stops

BOS6:32 pmBoston Logan Intl

$394

Find similar

Austrian Airlines

Oct 6

BOS5:10 pmBoston Logan Intl

18h 00m

1 stop

SOF6:10 pmSofia

Oct 20

SOF6:55 pmSofia

31h 01m

2 stops

BOS6:56 pmBoston Logan Intl

$401

Find similar

Austrian Airlines

Feb 10

BOS1:30 pmBoston Logan Intl

15h 20m

2 stops

SOF11:50 amSofia

Feb 24

SOF7:55 amSofia

16h 26m

2 stops

BOS5:21 pmBoston Logan Intl

$410

Find similar

Fly from

Fly to

Route

Depart

Return

Price

BostonSofia

BOS - SOF

BOSSOF

Boston Logan Intl

Mon 11/3

8:40 pm-6:20 pm

1 stop14h 40m

Sofia

Mon 11/17

6:45 pm-2:05 pm

1 stop26h 20m

$351

BostonSofia

BOS - SOF

BOSSOF

Boston Logan Intl

Tue 11/4

6:25 pm-11:50 am

1 stop10h 25m

Sofia

Tue 11/18

2:00 pm-6:35 pm

1 stop11h 35m

$356

BostonSofia

BOS - SOF

BOSSOF

Boston Logan Intl

Mon 1/12

8:40 pm-10:45 pm

1 stop19h 05m

Sofia

Mon 1/26

7:05 pm-6:35 pm

1 stop30h 30m

$395

BostonSofia

BOS - SOF

BOSSOF

Boston Logan Intl

Sat 11/8

7:55 pm-6:20 pm

2 stops39h 25m

Sofia

Thu 11/20

6:05 am-6:35 pm

1 stop19h 30m

$399

BostonSofia

BOS - SOF

BOSSOF

Boston Logan Intl

Sat 11/8

7:55 pm-6:20 pm

2 stops39h 25m

Sofia

Thu 11/20

6:05 am-3:57 pm

2 stops40h 52m

$406

BostonSofia

BOS - SOF

BOSSOF

Boston Logan Intl

Sat 11/8

8:40 pm-6:20 pm

1 stop14h 40m

Sofia

Thu 11/20

2:00 pm-6:35 pm

1 stop11h 35m

$414

New YorkSofia

JFK - SOF

JFKSOF

New York John F Kennedy Intl

Tue 10/21

5:45 pm-5:55 pm

1 stop17h 10m

Sofia

Wed 11/5

2:35 pm-8:35 pm

1 stop13h 00m

$467

New YorkSofia

JFK - SOF

JFKSOF

New York John F Kennedy Intl

Mon 11/3

12:20 am-9:15 am

1 stop25h 55m

Sofia

Thu 11/13

10:05 am-11:05 am

1 stop32h 00m

$481

New YorkSofia

JFK - SOF

JFKSOF

New York John F Kennedy Intl

Wed 10/15

12:35 am-8:25 pm

1 stop12h 50m

Sofia

Thu 10/30

4:00 pm-11:25 pm

1 stop13h 25m

$490

ChicagoSofia

ORD - SOF

ORDSOF

Chicago O'Hare Intl

Sun 11/16

9:55 pm-5:50 pm

2 stops35h 55m

Sofia

Thu 1/15

6:35 pm-8:00 pm

1 stop33h 25m

$547

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 $597, 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 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 $638 on momondo.

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

You could potentially save up to 15% 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 September 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 1,730 reviews	Search SWISS flights
Air France	PriceFrom $416	Free Cancellation	Rating 7.4 1,469 reviews	Search Air France flights
United Airlines	PriceFrom $428	Free Cancellation	Rating 7.4 8,929 reviews	Search United Airlines flights
KLM	PriceFrom $430	Free Cancellation	Rating 7.8 1,385 reviews	Search KLM flights
LOT	PriceFrom $437	Free Cancellation	Rating 7.6 1,114 reviews	Search LOT flights
Lufthansa	PriceFrom $471	Free Cancellation	Rating 6.8 7,407 reviews	Search Lufthansa flights
Austrian Airlines	PriceFrom $471	Free Cancellation	Rating 7.6 850 reviews	Search Austrian Airlines flights
Turkish Airlines	PriceFrom $497	Free Cancellation	Rating 7.3 3,968 reviews	Search Turkish Airlines flights
ITA Airways	PriceFrom $505	Free Cancellation	Rating 6.7 1,036 reviews	Search ITA Airways flights
British Airways	PriceFrom $510	Free Cancellation	Rating 6.6 7,361 reviews	Search British 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 $198

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 11/10. 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

Trusted and free

Trusted and free

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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

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

Recent last minute flight deals from the United States to Sofia

Air France flights from United States to Sofia

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

Austrian Airlines flights from United States to Sofia

Our best Austrian 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 15% 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, Air Canada, and Air France 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