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Cheap flights from the United States to Bulgaria from $227

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 3/17. 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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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.
Austrian Airlines Logo
1:55 pm - 11:50 am
BOS
-
SOF
14h 55m2 stops
Austrian Airlines Logo
7:55 am - 3:05 pm
SOF
-
BOS
13h 10m1 stop
$341Austrian Airlines
Tue, Mar 3 - Tue, Mar 17
Lufthansa Logo
8:40 pm - 10:45 pm
BOS
-
SOF
19h 05m1 stop
Lufthansa Logo
2:00 pm - 6:57 pm
SOF
-
BOS
35h 57m2 stops
$344Lufthansa
Mon, Jan 19 - Wed, Feb 4
Lufthansa Logo
2:20 pm - 1:15 pm
BOS
-
SOF
15h 55m2 stops
Lufthansa Logo
7:05 pm - 6:35 pm
SOF
-
BOS
30h 30m1 stop
$349Lufthansa
Mon, Jan 26 - Mon, Feb 9
Austrian Airlines Logo
6:25 pm - 11:50 am
BOS
-
SOF
10h 25m1 stop
Austrian Airlines Logo
7:55 am - 3:05 pm
SOF
-
BOS
13h 10m1 stop
$355Austrian Airlines
Tue, Mar 3 - Tue, Mar 17
United Airlines Logo
5:30 pm - 1:15 pm
JFK
-
SOF
12h 45m1 stop
United Airlines Logo
1:45 pm - 4:40 pm
SOF
-
JFK
32h 55m1 stop
$431United Airlines
Sat, Feb 28 - Mon, Mar 9
United Airlines Logo
4:50 pm - 1:35 pm
JFK
-
SOF
37h 45m2 stops
United Airlines Logo
1:45 pm - 4:40 pm
SOF
-
JFK
32h 55m1 stop
$433United Airlines
Sat, Mar 7 - Mon, Mar 16
SWISS Logo
4:25 pm - 1:15 pm
JFK
-
SOF
13h 50m2 stops
SWISS Logo
2:00 pm - 1:05 pm
SOF
-
JFK
30h 05m2 stops
$434SWISS
Tue, Feb 17 - Tue, Feb 24
KLM Logo
4:00 pm - 2:05 pm
LGA
-
SOF
15h 05m2 stops
KLM Logo
7:00 am - 9:42 pm
SOF
-
LGA
21h 42m2 stops
$435KLM
Thu, Jan 29 - Thu, Feb 12
SWISS Logo
8:15 pm - 12:30 pm
ORD
-
SOF
32h 15m2 stops
SWISS Logo
12:50 pm - 3:55 pm
SOF
-
ORD
35h 05m2 stops
$554SWISS
Sun, Mar 29 - Mon, Apr 13
KLM Logo
2:17 pm - 2:05 pm
DAL
-
SOF
39h 48m2 stops
KLM Logo
7:00 am - 10:29 pm
SOF
-
DAL
23h 29m2 stops
$606KLM
Wed, Jan 28 - Sun, Feb 1

Austrian Airlines flights from United States to Bulgaria

Our best Austrian Airlines deals on United States to Bulgaria flight tickets
Austrian Airlines
Mar 3
BOS1:55 pmBoston Logan Intl
14h 55m
2 stops
SOF11:50 amSofia
Mar 17
SOF7:55 amSofia
13h 10m
1 stop
BOS3:05 pmBoston Logan Intl
$341
Find similar
Austrian Airlines
Mar 3
BOS6:25 pmBoston Logan Intl
10h 25m
1 stop
SOF11:50 amSofia
Mar 17
SOF7:55 amSofia
13h 10m
1 stop
BOS3:05 pmBoston Logan Intl
$355
Find similar
Austrian Airlines
Mar 3
BOS6:25 pmBoston Logan Intl
10h 25m
1 stop
SOF11:50 amSofia
Mar 17
SOF7:55 amSofia
13h 10m
1 stop
BOS3:05 pmBoston Logan Intl
$356
Find similar

Lufthansa flights from United States to Bulgaria

Our best Lufthansa deals on United States to Bulgaria flight tickets
Lufthansa
Jan 19
BOS8:40 pmBoston Logan Intl
19h 05m
1 stop
SOF10:45 pmSofia
Feb 4
SOF2:00 pmSofia
35h 57m
2 stops
BOS6:57 pmBoston Logan Intl
$344
Find similar
Lufthansa
Jan 26
BOS2:20 pmBoston Logan Intl
15h 55m
2 stops
SOF1:15 pmSofia
Feb 9
SOF7:05 pmSofia
30h 30m
1 stop
BOS6:35 pmBoston Logan Intl
$349
Find similar
Lufthansa
Jan 19
BOS8:40 pmBoston Logan Intl
19h 05m
1 stop
SOF10:45 pmSofia
Feb 4
SOF2:00 pmSofia
11h 35m
1 stop
BOS6:35 pmBoston Logan Intl
$352
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 4, 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

Tue 3/3

1:55 pm-11:50 am

2 stops14h 55m

Sofia

Tue 3/17

7:55 am-3:05 pm

1 stop13h 10m

$341

BostonSofia

BOS - SOF

BOSSOF

Boston Logan Intl

Mon 1/19

8:40 pm-10:45 pm

1 stop19h 05m

Sofia

Wed 2/4

2:00 pm-6:57 pm

2 stops35h 57m

$344

BostonSofia

BOS - SOF

BOSSOF

Boston Logan Intl

Mon 1/26

2:20 pm-1:15 pm

2 stops15h 55m

Sofia

Mon 2/9

7:05 pm-6:35 pm

1 stop30h 30m

$349

BostonSofia

BOS - SOF

BOSSOF

Boston Logan Intl

Tue 3/3

6:25 pm-11:50 am

1 stop10h 25m

Sofia

Tue 3/17

7:55 am-3:05 pm

1 stop13h 10m

$355

New YorkSofia

JFK - SOF

JFKSOF

New York John F Kennedy Intl

Sat 2/28

5:30 pm-1:15 pm

1 stop12h 45m

Sofia

Mon 3/9

1:45 pm-4:40 pm

1 stop32h 55m

$431

New YorkSofia

JFK - SOF

JFKSOF

New York John F Kennedy Intl

Sat 3/7

4:50 pm-1:35 pm

2 stops37h 45m

Sofia

Mon 3/16

1:45 pm-4:40 pm

1 stop32h 55m

$433

New YorkSofia

JFK - SOF

JFKSOF

New York John F Kennedy Intl

Tue 2/17

4:25 pm-1:15 pm

2 stops13h 50m

Sofia

Tue 2/24

2:00 pm-1:05 pm

2 stops30h 05m

$434

New YorkSofia

LGA - SOF

LGASOF

New York LaGuardia

Thu 1/29

4:00 pm-2:05 pm

2 stops15h 05m

Sofia

Thu 2/12

7:00 am-9:42 pm

2 stops21h 42m

$435

ChicagoSofia

ORD - SOF

ORDSOF

Chicago O'Hare Intl

Sun 3/29

8:15 pm-12:30 pm

2 stops32h 15m

Sofia

Mon 4/13

12:50 pm-3:55 pm

2 stops35h 05m

$554

DallasSofia

DAL - SOF

DALSOF

Dallas Love Field

Wed 1/28

2:17 pm-2:05 pm

2 stops39h 48m

Sofia

Sun 2/1

7:00 am-10:29 pm

2 stops23h 29m

$606

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 September, then flying in October is also cheap. Prices for this month can be found on momondo for an average of $599.

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 $715 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 $634 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
1,800 reviews
Search SWISS flights
Austrian AirlinesPriceFrom $356Free CancellationRating
7.6
875 reviews
Search Austrian Airlines flights
British AirwaysPriceFrom $406Free CancellationRating
6.7
7,559 reviews
Search British Airways flights
KLMPriceFrom $409Free CancellationRating
7.7
1,428 reviews
Search KLM flights
Air FrancePriceFrom $416Free CancellationRating
7.4
1,500 reviews
Search Air France flights
United AirlinesPriceFrom $428Free CancellationRating
7.4
9,063 reviews
Search United Airlines flights
LOTPriceFrom $437Free CancellationRating
7.5
1,143 reviews
Search LOT flights
LufthansaPriceFrom $449Free CancellationRating
6.8
7,612 reviews
Search Lufthansa flights
JetBluePriceFrom $478Free CancellationRating
7.2
2,899 reviews
Search JetBlue flights
ITA AirwaysPriceFrom $505Free CancellationRating
6.7
1,096 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

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