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Cheap flights from the United States to Bulgaria from $174

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 1/13. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

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Find the cheapest flights from the United States to Bulgaria

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

Enter your travel dates to find the best prices.
Lufthansa Logo
2:20 pm - 1:15 pm
BOS
-
SOF
15h 55m2 stops
Lufthansa Logo
2:00 pm - 6:35 pm
SOF
-
BOS
11h 35m1 stop
$333Lufthansa
Mon, Jan 26 - Tue, Feb 10
Lufthansa Logo
2:20 pm - 1:15 pm
BOS
-
SOF
15h 55m2 stops
Lufthansa Logo
2:00 pm - 6:35 pm
SOF
-
BOS
11h 35m1 stop
$337Lufthansa
Tue, Jan 27 - Tue, Feb 10
Austrian Airlines Logo
5:55 pm - 11:50 am
EWR
-
SOF
10h 55m1 stop
Austrian Airlines Logo
7:55 am - 1:55 pm
SOF
-
EWR
13h 00m1 stop
$355Austrian Airlines
Tue, Jan 13 - Tue, Jan 20
Austrian Airlines Logo
5:55 pm - 6:00 pm
EWR
-
SOF
17h 05m1 stop
Austrian Airlines Logo
6:45 pm - 1:55 pm
SOF
-
EWR
26h 10m1 stop
$356Austrian Airlines
Wed, Jan 21 - Mon, Jan 26
United Airlines Logo
6:10 pm - 11:10 pm
JFK
-
SOF
22h 00m2 stops
United Airlines Logo
6:10 am - 12:50 pm
SOF
-
JFK
37h 40m2 stops
$442United Airlines
Tue, Apr 7 - Tue, Apr 21
United Airlines Logo
9:00 pm - 1:15 pm
JFK
-
SOF
33h 15m2 stops
United Airlines Logo
6:10 am - 1:05 pm
SOF
-
JFK
37h 55m2 stops
$443United Airlines
Sun, Jan 11 - Mon, Jan 26
LOT Logo
9:55 pm - 5:50 pm
ORD
-
SOF
35h 55m2 stops
LOT Logo
2:35 pm - 8:00 pm
SOF
-
ORD
13h 25m1 stop
$558LOT
Sun, Jan 25 - Sun, Feb 8
Turkish Airlines Logo
7:50 pm - 8:15 pm
ORD
-
SOF
16h 25m1 stop
Turkish Airlines Logo
3:50 pm - 9:40 am
SOF
-
ORD
25h 50m1 stop
$566Turkish Airlines
Wed, Apr 1 - Mon, Apr 6
Turkish Airlines Logo
7:50 pm - 8:15 pm
ORD
-
SOF
16h 25m1 stop
Turkish Airlines Logo
9:35 am - 9:40 am
SOF
-
ORD
32h 05m1 stop
$567Turkish Airlines
Fri, Apr 10 - Fri, Apr 24
LOT Logo
9:55 pm - 5:50 pm
ORD
-
SOF
35h 55m2 stops
LOT Logo
6:35 pm - 7:55 pm
SOF
-
ORD
33h 20m2 stops
$574LOT
Sun, Jan 25 - Sun, Feb 8

KLM flights from United States to Bulgaria

Our best KLM deals on United States to Bulgaria flight tickets
KLM
Dec 10
JFK4:40 pmNew York John F Kennedy Intl
14h 25m
1 stop
SOF2:05 pmSofia
Dec 25
SOF7:00 amSofia
13h 15m
1 stop
JFK1:15 pmNew York John F Kennedy Intl
$479
Find similar
KLM
Jan 30
LAX11:07 amLos Angeles
16h 58m
2 stops
SOF2:05 pmSofia
Feb 13
SOF7:00 amSofia
19h 35m
2 stops
LAX4:35 pmLos Angeles
$549
Find similar
KLM
Dec 11
JFK6:50 pmNew York John F Kennedy Intl
12h 15m
1 stop
SOF2:05 pmSofia
Dec 15
SOF7:00 amSofia
35h 30m
1 stop
JFK11:30 amNew York John F Kennedy Intl
$620
Find similar

Lufthansa flights from United States to Bulgaria

Our best Lufthansa deals on United States to Bulgaria flight tickets
Lufthansa
Jan 26
BOS2:20 pmBoston Logan Intl
15h 55m
2 stops
SOF1:15 pmSofia
Feb 10
SOF2:00 pmSofia
11h 35m
1 stop
BOS6:35 pmBoston Logan Intl
$333
Find similar
Lufthansa
Jan 27
BOS2:20 pmBoston Logan Intl
15h 55m
2 stops
SOF1:15 pmSofia
Feb 10
SOF2:00 pmSofia
11h 35m
1 stop
BOS6:35 pmBoston Logan Intl
$337
Find similar
Lufthansa
Jan 28
EWR8:50 pmNewark
14h 30m
1 stop
SOF6:20 pmSofia
Feb 11
SOF6:05 amSofia
20h 00m
1 stop
EWR7:05 pmNewark
$348
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from United States to Bulgaria that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 832,500 searches. Data last updated December 9, 2025.
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 1/26

2:20 pm-1:15 pm

2 stops15h 55m

Sofia

Tue 2/10

2:00 pm-6:35 pm

1 stop11h 35m

$333

BostonSofia

BOS - SOF

BOSSOF

Boston Logan Intl

Tue 1/27

2:20 pm-1:15 pm

2 stops15h 55m

Sofia

Tue 2/10

2:00 pm-6:35 pm

1 stop11h 35m

$337

NewarkSofia

EWR - SOF

EWRSOF

Newark

Tue 1/13

5:55 pm-11:50 am

1 stop10h 55m

Sofia

Tue 1/20

7:55 am-1:55 pm

1 stop13h 00m

$355

NewarkSofia

EWR - SOF

EWRSOF

Newark

Wed 1/21

5:55 pm-6:00 pm

1 stop17h 05m

Sofia

Mon 1/26

6:45 pm-1:55 pm

1 stop26h 10m

$356

New YorkSofia

JFK - SOF

JFKSOF

New York John F Kennedy Intl

Tue 4/7

6:10 pm-11:10 pm

2 stops22h 00m

Sofia

Tue 4/21

6:10 am-12:50 pm

2 stops37h 40m

$442

New YorkSofia

JFK - SOF

JFKSOF

New York John F Kennedy Intl

Sun 1/11

9:00 pm-1:15 pm

2 stops33h 15m

Sofia

Mon 1/26

6:10 am-1:05 pm

2 stops37h 55m

$443

ChicagoSofia

ORD - SOF

ORDSOF

Chicago O'Hare Intl

Sun 1/25

9:55 pm-5:50 pm

2 stops35h 55m

Sofia

Sun 2/8

2:35 pm-8:00 pm

1 stop13h 25m

$558

ChicagoSofia

ORD - SOF

ORDSOF

Chicago O'Hare Intl

Wed 4/1

7:50 pm-8:15 pm

1 stop16h 25m

Sofia

Mon 4/6

3:50 pm-9:40 am

1 stop25h 50m

$566

ChicagoSofia

ORD - SOF

ORDSOF

Chicago O'Hare Intl

Fri 4/10

7:50 pm-8:15 pm

1 stop16h 25m

Sofia

Fri 4/24

9:35 am-9:40 am

1 stop32h 05m

$567

ChicagoSofia

ORD - SOF

ORDSOF

Chicago O'Hare Intl

Sun 1/25

9:55 pm-5:50 pm

2 stops35h 55m

Sofia

Sun 2/8

6:35 pm-7:55 pm

2 stops33h 20m

$574

Flights are sorted by cheapest round-trip flights first.

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See travel insights to Bulgaria from

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

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 week ahead of your departure date. In general, you can expect to find flights to Bulgaria for around $720 when searching week 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 $615 on momondo.

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

You could potentially save up to 32% 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 30m

Direct flights

None
The fastest flight from United States to Bulgaria takes 10h 30m
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?

  • 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
SWISSPriceFrom $353Free CancellationRating
7.5
1,808 reviews
Search SWISS flights
British AirwaysPriceFrom $356Free CancellationRating
6.7
7,573 reviews
Search British Airways flights
Austrian AirlinesPriceFrom $356Free CancellationRating
7.6
879 reviews
Search Austrian Airlines flights
KLMPriceFrom $380Free CancellationRating
7.7
1,431 reviews
Search KLM flights
Air FrancePriceFrom $416Free CancellationRating
7.4
1,502 reviews
Search Air France flights
United AirlinesPriceFrom $428Free CancellationRating
7.4
9,092 reviews
Search United Airlines flights
LOTPriceFrom $437Free CancellationRating
7.6
1,146 reviews
Search LOT flights
LufthansaPriceFrom $449Free CancellationRating
6.8
7,619 reviews
Search Lufthansa flights
JetBluePriceFrom $478Free CancellationRating
7.2
2,899 reviews
Search JetBlue flights
ITA AirwaysPriceFrom $505Free CancellationRating
6.7
1,098 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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