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Cheap flights from the United States to Bulgaria from $221

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 1/18. 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
$347Lufthansa
Wed, Jan 21 - Wed, Jan 28
Multiple Airlines Logo
8:50 pm - 6:20 pm
EWR
-
SOF
14h 30m1 stop
Multiple Airlines Logo
7:55 am - 1:55 pm
SOF
-
EWR
13h 00m1 stop
$348Multiple Airlines
Tue, Jan 27 - Tue, Feb 3
Lufthansa Logo
8:40 pm - 6:20 pm
BOS
-
SOF
14h 40m1 stop
Lufthansa Logo
2:00 pm - 6:35 pm
SOF
-
BOS
11h 35m1 stop
$362Lufthansa
Wed, Jan 21 - Wed, Jan 28
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
$365Austrian Airlines
Mon, Jan 12 - Mon, Jan 26
Austrian Airlines Logo
5:35 pm - 11:55 pm
EWR
-
SOF
23h 20m2 stops
Austrian Airlines Logo
12:35 pm - 1:55 pm
SOF
-
EWR
32h 20m1 stop
$387Austrian Airlines
Mon, Jan 12 - Mon, Jan 26
United Airlines Logo
3:07 pm - 12:05 pm
EWR
-
SOF
13h 58m2 stops
United Airlines Logo
12:50 pm - 6:45 pm
SOF
-
EWR
12h 55m1 stop
$400United Airlines
Tue, Apr 14 - Tue, Apr 28
United Airlines Logo
6:00 am - 6:20 pm
LGA
-
SOF
29h 20m2 stops
United Airlines Logo
7:55 am - 11:43 pm
SOF
-
LGA
22h 48m2 stops
$458United Airlines
Sun, Jan 11 - Sun, Jan 18
Turkish Airlines Logo
4:27 pm - 8:50 pm
DFW
-
SOF
20h 23m2 stops
Turkish Airlines Logo
9:35 am - 11:05 pm
SOF
-
DFW
21h 30m2 stops
$534Turkish Airlines
Wed, Jan 21 - Fri, Jan 30
Turkish Airlines Logo
4:27 pm - 3:10 pm
DFW
-
SOF
38h 43m2 stops
Turkish Airlines Logo
9:40 pm - 10:59 pm
SOF
-
DFW
33h 19m2 stops
$539Turkish Airlines
Mon, Jan 12 - Mon, Jan 26
LOT Logo
9:50 pm - 6:00 pm
ORD
-
SOF
12h 10m1 stop
LOT Logo
5:20 am - 7:50 pm
SOF
-
ORD
22h 30m1 stop
$577LOT
Sat, Apr 11 - Sat, Apr 18

Lufthansa flights from United States to Bulgaria

Our best Lufthansa deals on United States to Bulgaria flight tickets
Lufthansa
Jan 21
BOS2:20 pmBoston Logan Intl
15h 55m
2 stops
SOF1:15 pmSofia
Jan 28
SOF2:00 pmSofia
11h 35m
1 stop
BOS6:35 pmBoston Logan Intl
$347
Find similar
Lufthansa
Jan 21
BOS8:40 pmBoston Logan Intl
14h 40m
1 stop
SOF6:20 pmSofia
Jan 28
SOF2:00 pmSofia
11h 35m
1 stop
BOS6:35 pmBoston Logan Intl
$362
Find similar
Lufthansa
Jan 11
BOS8:40 pmBoston Logan Intl
14h 40m
1 stop
SOF6:20 pmSofia
Jan 25
SOF2:00 pmSofia
11h 35m
1 stop
BOS6:35 pmBoston Logan Intl
$403
Find similar

United Airlines flights from United States to Bulgaria

Our best United Airlines deals on United States to Bulgaria flight tickets
United Airlines
Apr 14
EWR3:07 pmNewark
13h 58m
2 stops
SOF12:05 pmSofia
Apr 28
SOF12:50 pmSofia
12h 55m
1 stop
EWR6:45 pmNewark
$400
Find similar
United Airlines
Mar 25
EWR7:05 pmNewark
16h 55m
1 stop
SOF6:00 pmSofia
Apr 1
SOF6:20 amSofia
19h 49m
2 stops
EWR7:09 pmNewark
$446
Find similar
United Airlines
Jan 1
BOS6:01 amBoston Logan Intl
33h 44m
2 stops
SOF10:45 pmSofia
Jan 15
SOF6:05 amSofia
34h 57m
2 stops
BOS10:02 amBoston Logan Intl
$456
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 11, 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

Wed 1/21

2:20 pm-1:15 pm

2 stops15h 55m

Sofia

Wed 1/28

2:00 pm-6:35 pm

1 stop11h 35m

$347

NewarkSofia

EWR - SOF

EWRSOF

Newark

Tue 1/27

8:50 pm-6:20 pm

1 stop14h 30m

Sofia

Tue 2/3

7:55 am-1:55 pm

1 stop13h 00m

$348

BostonSofia

BOS - SOF

BOSSOF

Boston Logan Intl

Wed 1/21

8:40 pm-6:20 pm

1 stop14h 40m

Sofia

Wed 1/28

2:00 pm-6:35 pm

1 stop11h 35m

$362

NewarkSofia

EWR - SOF

EWRSOF

Newark

Mon 1/12

5:55 pm-6:00 pm

1 stop17h 05m

Sofia

Mon 1/26

6:45 pm-1:55 pm

1 stop26h 10m

$365

NewarkSofia

EWR - SOF

EWRSOF

Newark

Mon 1/12

5:35 pm-11:55 pm

2 stops23h 20m

Sofia

Mon 1/26

12:35 pm-1:55 pm

1 stop32h 20m

$387

NewarkSofia

EWR - SOF

EWRSOF

Newark

Tue 4/14

3:07 pm-12:05 pm

2 stops13h 58m

Sofia

Tue 4/28

12:50 pm-6:45 pm

1 stop12h 55m

$400

New YorkSofia

LGA - SOF

LGASOF

New York LaGuardia

Sun 1/11

6:00 am-6:20 pm

2 stops29h 20m

Sofia

Sun 1/18

7:55 am-11:43 pm

2 stops22h 48m

$458

DallasSofia

DFW - SOF

DFWSOF

Dallas/Fort Worth

Wed 1/21

4:27 pm-8:50 pm

2 stops20h 23m

Sofia

Fri 1/30

9:35 am-11:05 pm

2 stops21h 30m

$534

DallasSofia

DFW - SOF

DFWSOF

Dallas/Fort Worth

Mon 1/12

4:27 pm-3:10 pm

2 stops38h 43m

Sofia

Mon 1/26

9:40 pm-10:59 pm

2 stops33h 19m

$539

ChicagoSofia

ORD - SOF

ORDSOF

Chicago O'Hare Intl

Sat 4/11

9:50 pm-6:00 pm

1 stop12h 10m

Sofia

Sat 4/18

5:20 am-7:50 pm

1 stop22h 30m

$577

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest 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 25m

Direct flights

None
The fastest flight from United States to Bulgaria takes 10h 25m
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
1,810 reviews
Search SWISS flights
British AirwaysPriceFrom $356Free CancellationRating
6.7
7,571 reviews
Search British Airways flights
Austrian AirlinesPriceFrom $356Free CancellationRating
7.6
879 reviews
Search Austrian Airlines flights
KLMPriceFrom $380Free CancellationRating
7.7
1,432 reviews
Search KLM flights
Air FrancePriceFrom $416Free CancellationRating
7.4
1,504 reviews
Search Air France flights
United AirlinesPriceFrom $428Free CancellationRating
7.4
9,093 reviews
Search United Airlines flights
LOTPriceFrom $437Free CancellationRating
7.6
1,146 reviews
Search LOT flights
LufthansaPriceFrom $449Free CancellationRating
6.8
7,626 reviews
Search Lufthansa flights
JetBluePriceFrom $478Free CancellationRating
7.2
2,899 reviews
Search JetBlue flights
ITA AirwaysPriceFrom $505Free CancellationRating
6.7
1,102 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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