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Cheap flights from Boston to Bulgaria from $258

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Boston to Bulgaria departing on 3/15. 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 Boston to Bulgaria

Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
9:40 pm - 10:45 pm
BOS
-
SOF
19h 05m
1 stop
Multiple Airlines Logo
6:45 pm - 3:05 pm
SOF
-
BOS
26h 20m
1 stop
$350Multiple Airlines
Mon, Mar 9 - Mon, Mar 23
Multiple Airlines Logo
10:50 pm - 3:15 pm
BOS
-
SOF
10h 25m
1 stop
Multiple Airlines Logo
8:00 am - 6:19 pm
SOF
-
BOS
17h 19m
2 stops
$352Multiple Airlines
Wed, Mar 25 - Wed, Apr 8
Lufthansa Logo
8:40 pm - 10:45 pm
BOS
-
SOF
19h 05m
1 stop
Lufthansa Logo
2:00 pm - 7:35 pm
SOF
-
BOS
11h 35m
1 stop
$355Lufthansa
Wed, Feb 25 - Wed, Mar 11
Multiple Airlines Logo
10:50 pm - 3:15 pm
BOS
-
SOF
10h 25m
1 stop
Multiple Airlines Logo
8:00 am - 1:50 pm
SOF
-
BOS
12h 50m
1 stop
$361Multiple Airlines
Wed, Mar 25 - Wed, Apr 8
Multiple Airlines Logo
9:40 pm - 10:20 am
BOS
-
SOF
29h 40m
1 stop
Multiple Airlines Logo
6:55 pm - 1:50 pm
SOF
-
BOS
25h 55m
1 stop
$362Multiple Airlines
Mon, May 4 - Tue, May 12
Multiple Airlines Logo
10:50 pm - 3:15 pm
BOS
-
SOF
10h 25m
1 stop
Multiple Airlines Logo
8:00 am - 1:50 pm
SOF
-
BOS
12h 50m
1 stop
$363Multiple Airlines
Wed, Mar 25 - Wed, Apr 15
Austrian Airlines Logo
1:55 pm - 3:15 pm
BOS
-
VAR
18h 20m
2 stops
Austrian Airlines Logo
4:00 pm - 3:05 pm
VAR
-
BOS
29h 05m
1 stop
$397Austrian Airlines
Tue, Feb 24 - Thu, Mar 19
Austrian Airlines Logo
6:25 pm - 3:15 pm
BOS
-
VAR
13h 50m
1 stop
Austrian Airlines Logo
4:00 pm - 3:05 pm
VAR
-
BOS
29h 05m
1 stop
$398Austrian Airlines
Tue, Feb 24 - Thu, Mar 19
Austrian Airlines Logo
7:25 pm - 3:15 pm
BOS
-
VAR
13h 50m
1 stop
Austrian Airlines Logo
4:00 pm - 1:50 pm
VAR
-
BOS
28h 50m
1 stop
$446Austrian Airlines
Sun, Mar 22 - Sun, Mar 29
Lufthansa Logo
8:05 pm - 3:15 pm
BOS
-
VAR
36h 10m
2 stops
Lufthansa Logo
9:30 pm - 5:40 pm
VAR
-
BOS
27h 10m
1 stop
$455Lufthansa
Tue, Apr 21 - Wed, May 13

Austrian Airlines flights from Boston to Bulgaria

Our best Austrian Airlines deals on Boston to Bulgaria flight tickets
Austrian Airlines
Mar 3
BOS2:20 pmBoston Logan Intl
20h 40m
2 stops
SOF6:00 pmSofia
Jun 2
SOF6:55 pmSofia
25h 55m
1 stop
BOS1:50 pmBoston Logan Intl
$351
Austrian Airlines
Feb 24
BOS6:25 pmBoston Logan Intl
22h 30m
1 stop
SOF11:55 pmSofia
Mar 10
SOF7:55 amSofia
13h 10m
1 stop
BOS3:05 pmBoston Logan Intl
$353
Austrian Airlines
Mar 3
BOS6:25 pmBoston Logan Intl
10h 25m
1 stop
SOF11:50 amSofia
Jun 2
SOF12:25 pmSofia
32h 25m
1 stop
BOS1:50 pmBoston Logan Intl
$362

United Airlines flights from Boston to Bulgaria

Our best United Airlines deals on Boston to Bulgaria flight tickets
United Airlines
Apr 19
BOS8:05 pmBoston Logan Intl
20h 05m
1 stop
SOF11:10 pmSofia
May 12
SOF6:10 amSofia
18h 30m
1 stop
BOS5:40 pmBoston Logan Intl
$397
United Airlines
Apr 20
BOS2:37 pmBoston Logan Intl
14h 33m
2 stops
SOF12:10 pmSofia
May 12
SOF12:55 pmSofia
11h 45m
1 stop
BOS5:40 pmBoston Logan Intl
$402
United Airlines
Apr 19
BOS6:15 amBoston Logan Intl
22h 55m
2 stops
SOF12:10 pmSofia
May 12
SOF12:55 pmSofia
11h 45m
1 stop
BOS5:40 pmBoston Logan Intl
$406

momondo Fare Finder

 
Customize your flight search to find flights from Boston 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 February 6, 2026.
Use the filters below to find and compare flights from Boston to Bulgaria that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

BostonSofia

BOS - SOF

BOSSOF

Boston Logan Intl

Mon 3/9

9:40 pm-10:45 pm

1 stop19h 05m

Sofia

Mon 3/23

6:45 pm-3:05 pm

1 stop26h 20m

$350

BostonSofia

BOS - SOF

BOSSOF

Boston Logan Intl

Wed 3/25

10:50 pm-3:15 pm

1 stop10h 25m

Sofia

Wed 4/8

8:00 am-6:19 pm

2 stops17h 19m

$352

BostonSofia

BOS - SOF

BOSSOF

Boston Logan Intl

Wed 2/25

8:40 pm-10:45 pm

1 stop19h 05m

Sofia

Wed 3/11

2:00 pm-7:35 pm

1 stop11h 35m

$355

BostonSofia

BOS - SOF

BOSSOF

Boston Logan Intl

Wed 3/25

10:50 pm-3:15 pm

1 stop10h 25m

Sofia

Wed 4/8

8:00 am-1:50 pm

1 stop12h 50m

$361

BostonSofia

BOS - SOF

BOSSOF

Boston Logan Intl

Mon 5/4

9:40 pm-10:20 am

1 stop29h 40m

Sofia

Tue 5/12

6:55 pm-1:50 pm

1 stop25h 55m

$362

BostonSofia

BOS - SOF

BOSSOF

Boston Logan Intl

Wed 3/25

10:50 pm-3:15 pm

1 stop10h 25m

Sofia

Wed 4/15

8:00 am-1:50 pm

1 stop12h 50m

$363

BostonVarna

BOS - VAR

BOSVAR

Boston Logan Intl

Tue 2/24

1:55 pm-3:15 pm

2 stops18h 20m

Varna

Thu 3/19

4:00 pm-3:05 pm

1 stop29h 05m

$397

BostonVarna

BOS - VAR

BOSVAR

Boston Logan Intl

Tue 2/24

6:25 pm-3:15 pm

1 stop13h 50m

Varna

Thu 3/19

4:00 pm-3:05 pm

1 stop29h 05m

$398

BostonVarna

BOS - VAR

BOSVAR

Boston Logan Intl

Sun 3/22

7:25 pm-3:15 pm

1 stop13h 50m

Varna

Sun 3/29

4:00 pm-1:50 pm

1 stop28h 50m

$446

BostonVarna

BOS - VAR

BOSVAR

Boston Logan Intl

Tue 4/21

8:05 pm-3:15 pm

2 stops36h 10m

Varna

Wed 5/13

9:30 pm-5:40 pm

1 stop27h 10m

$455

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 Boston 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 February, then flying in November is also cheap. Prices for this month can be found on momondo for an average of $478.

How far in advance should I book a flight to Bulgaria?

You are more likely to see cheaper flights to Bulgaria from Boston when booking weeks ahead of your departure date. In general, you can expect to find flights to Bulgaria for around $659 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Bulgaria from Boston for as low as $600 on momondo.

Can stopping save me money on Boston to Bulgaria flights?

You could potentially save up to 13% on your flight if you consider stops on a Boston to Bulgaria flight.

Cheap Boston to Bulgaria flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Boston to Bulgaria

Fastest flight time

10h 25m

Direct flights

None
The fastest flight from Boston to Bulgaria takes 10h 25m
There are no direct flights from Boston to Bulgaria. There are no popular flight routes from Boston to Bulgaria.
Search flight deals

  • When did momondo last update prices for flights from Boston Logan Intl Airport to Bulgaria?

    Prices for flights from Boston Logan Intl Airport to Bulgaria refresh daily.

  • How many operators does momondo search for flights from Boston Logan Intl Airport to Bulgaria?

  • How old do you have to be to fly from Boston Logan Intl Airport 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 Boston Logan Intl Airport to Bulgaria.

  • What documentation or ID do you need to fly to Bulgaria?

    The travel and health documents required for your trip to Bulgaria can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Bulgaria. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

Best airlines flying from Boston to Bulgaria

Compare and see reviews for airlines that fly from Boston to Bulgaria with momondo
Airline
Rating
Free Cancellation
Price
Austrian AirlinesPriceFrom $356Free CancellationRating
7.5
896 reviews
Search Austrian Airlines flights
KLMPriceFrom $380Free CancellationRating
7.7
1,450 reviews
Search KLM flights
Air FrancePriceFrom $396Free CancellationRating
7.4
1,532 reviews
Search Air France flights
SWISSPriceFrom $410Free CancellationRating
7.6
1,867 reviews
Search SWISS flights
LufthansaPriceFrom $417Free CancellationRating
6.8
7,764 reviews
Search Lufthansa flights
United AirlinesPriceFrom $422Free CancellationRating
7.4
9,243 reviews
Search United Airlines flights
British AirwaysPriceFrom $482Free CancellationRating
6.7
7,716 reviews
Search British Airways flights
ITA AirwaysPriceFrom $505Free CancellationRating
6.7
1,145 reviews
Search ITA Airways flights
Turkish AirlinesPriceFrom $514Free CancellationRating
7.3
4,210 reviews
Search Turkish Airlines flights

Why use momondo?

Why should I use momondo to find a flight deal from Boston to Bulgaria?

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Boston to Bulgaria. momondo saves you time and could save you money on your trip.

Can I find flights from Boston to Bulgaria with flexible booking policies on momondo?

Yes. All flights to Bulgaria from Boston on momondo can be compared and filtered by various policies on offer, including flexible booking.

How can momondo help me find flights from Boston to Bulgaria?

momondo helps you find the best flight between Boston 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 Boston to Bulgaria right now. Can momondo alert me if prices change?

If you are simply researching potential flights to Bulgaria, momondo offers a useful price alert feature which will track prices for flights to Bulgaria from Boston and alert you when they change.

An easier way to manage your Bulgaria trip

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Sun 3/8
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