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Cheap flights from Boston to Bulgaria from $323

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 11/27. 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 Boston to Bulgaria

Cheap round-trip flights

Enter your travel dates to find the best prices.
Austrian Airlines Logo
1:55 pm - 6:00 pmBOS-SOF
21h 05m2 stops
Austrian Airlines Logo
6:45 pm - 3:05 pmSOF-BOS
26h 20m1 stop
$326Austrian Airlines
Find Deal
Mon, Mar 2 - Mon, Mar 16
Austrian Airlines Logo
1:30 pm - 11:50 amBOS-SOF
15h 20m2 stops
Austrian Airlines Logo
7:55 am - 2:05 pmSOF-BOS
13h 10m1 stop
$340Austrian Airlines
Find Deal
Tue, Feb 3 - Tue, Feb 17
Austrian Airlines Logo
6:25 pm - 6:00 pmBOS-SOF
16h 35m1 stop
Austrian Airlines Logo
12:35 pm - 6:41 pmSOF-BOS
36h 06m2 stops
$346Austrian Airlines
Find Deal
Tue, Mar 3 - Tue, Mar 17
Austrian Airlines Logo
6:25 pm - 11:50 amBOS-SOF
10h 25m1 stop
Austrian Airlines Logo
7:55 am - 6:48 pmSOF-BOS
17h 53m2 stops
$347Austrian Airlines
Find Deal
Sun, Nov 16 - Fri, Dec 5
Lufthansa Logo
8:40 pm - 6:20 pmBOS-SOF
14h 40m1 stop
Lufthansa Logo
2:00 pm - 6:35 pmSOF-BOS
11h 35m1 stop
$352Lufthansa
Find Deal
Sun, Nov 16 - Fri, Dec 5
Lufthansa Logo
8:40 pm - 6:00 pmBOS-SOF
14h 20m2 stops
Lufthansa Logo
2:00 pm - 6:35 pmSOF-BOS
11h 35m1 stop
$368Lufthansa
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Sun, Nov 16 - Fri, Dec 5
United Airlines Logo
8:40 pm - 10:45 pmBOS-SOF
19h 05m1 stop
United Airlines Logo
6:05 am - 7:35 pmSOF-BOS
19h 30m1 stop
$395United Airlines
Find Deal
Sun, Mar 1 - Wed, Mar 18
United Airlines Logo
5:30 am - 1:00 pmBOS-SOF
24h 30m2 stops
United Airlines Logo
6:05 am - 6:35 pmSOF-BOS
19h 30m1 stop
$396United Airlines
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Sun, Nov 16 - Fri, Dec 5
KLM Logo
7:10 pm - 2:05 pmBOS-SOF
11h 55m1 stop
KLM Logo
7:00 am - 4:11 pmSOF-BOS
16h 11m2 stops
$419KLM
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Wed, Nov 26 - Wed, Dec 10
Turkish Airlines Logo
9:50 pm - 2:40 amBOS-VAR
21h 50m1 stop
Turkish Airlines Logo
10:10 pm - 7:55 pmVAR-BOS
28h 45m1 stop
$662Turkish Airlines
Find Deal
Thu, Apr 2 - Mon, Apr 6

Austrian Airlines flights from Boston to Bulgaria

Our best Austrian Airlines deals on Boston to Bulgaria flight tickets
Austrian Airlines
Mar 2
BOS1:55 pmBoston Logan Intl
21h 05m
2 stops
SOF6:00 pmSofia
Mar 16
SOF6:45 pmSofia
26h 20m
1 stop
BOS3:05 pmBoston Logan Intl
$326
Find similar
Austrian Airlines
Feb 3
BOS1:30 pmBoston Logan Intl
15h 20m
2 stops
SOF11:50 amSofia
Feb 17
SOF7:55 amSofia
13h 10m
1 stop
BOS2:05 pmBoston Logan Intl
$340
Find similar
Austrian Airlines
Mar 3
BOS6:25 pmBoston Logan Intl
16h 35m
1 stop
SOF6:00 pmSofia
Mar 17
SOF12:35 pmSofia
36h 06m
2 stops
BOS6:41 pmBoston Logan Intl
$346
Find similar

Lufthansa flights from Boston to Bulgaria

Our best Lufthansa deals on Boston to Bulgaria flight tickets
Lufthansa
Nov 16
BOS8:40 pmBoston Logan Intl
14h 40m
1 stop
SOF6:20 pmSofia
Dec 5
SOF2:00 pmSofia
11h 35m
1 stop
BOS6:35 pmBoston Logan Intl
$352
Find similar
Lufthansa
Nov 16
BOS8:40 pmBoston Logan Intl
14h 20m
2 stops
SOF6:00 pmSofia
Dec 5
SOF2:00 pmSofia
11h 35m
1 stop
BOS6:35 pmBoston Logan Intl
$368
Find similar
Lufthansa
Jan 12
BOS8:40 pmBoston Logan Intl
19h 05m
1 stop
SOF10:45 pmSofia
Jan 28
SOF2:00 pmSofia
11h 35m
1 stop
BOS6:35 pmBoston Logan Intl
$389
Find similar

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 November 5, 2025.
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 3/2

1:55 pm-6:00 pm

2 stops21h 05m

Sofia

Mon 3/16

6:45 pm-3:05 pm

1 stop26h 20m

$326

BostonSofia

BOS - SOF

BOSSOF

Boston Logan Intl

Tue 2/3

1:30 pm-11:50 am

2 stops15h 20m

Sofia

Tue 2/17

7:55 am-2:05 pm

1 stop13h 10m

$340

BostonSofia

BOS - SOF

BOSSOF

Boston Logan Intl

Tue 3/3

6:25 pm-6:00 pm

1 stop16h 35m

Sofia

Tue 3/17

12:35 pm-6:41 pm

2 stops36h 06m

$346

BostonSofia

BOS - SOF

BOSSOF

Boston Logan Intl

Sun 11/16

6:25 pm-11:50 am

1 stop10h 25m

Sofia

Fri 12/5

7:55 am-6:48 pm

2 stops17h 53m

$347

BostonSofia

BOS - SOF

BOSSOF

Boston Logan Intl

Sun 11/16

8:40 pm-6:20 pm

1 stop14h 40m

Sofia

Fri 12/5

2:00 pm-6:35 pm

1 stop11h 35m

$352

BostonSofia

BOS - SOF

BOSSOF

Boston Logan Intl

Sun 11/16

8:40 pm-6:00 pm

2 stops14h 20m

Sofia

Fri 12/5

2:00 pm-6:35 pm

1 stop11h 35m

$368

BostonSofia

BOS - SOF

BOSSOF

Boston Logan Intl

Sun 3/1

8:40 pm-10:45 pm

1 stop19h 05m

Sofia

Wed 3/18

6:05 am-7:35 pm

1 stop19h 30m

$395

BostonSofia

BOS - SOF

BOSSOF

Boston Logan Intl

Sun 11/16

5:30 am-1:00 pm

2 stops24h 30m

Sofia

Fri 12/5

6:05 am-6:35 pm

1 stop19h 30m

$396

BostonSofia

BOS - SOF

BOSSOF

Boston Logan Intl

Wed 11/26

7:10 pm-2:05 pm

1 stop11h 55m

Sofia

Wed 12/10

7:00 am-4:11 pm

2 stops16h 11m

$419

BostonVarna

BOS - VAR

BOSVAR

Boston Logan Intl

Thu 4/2

9:50 pm-2:40 am

1 stop21h 50m

Varna

Mon 4/6

10:10 pm-7:55 pm

1 stop28h 45m

$662

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 October, then flying in February is also cheap. Prices for this month can be found on momondo for an average of $585.

What is the cheapest day to depart on your flight to Bulgaria?

The cheapest day to depart from Boston to Bulgaria is on a Tuesday when prices can be found for as low as $843. On the other hand, Friday is the most expensive day to depart from Boston because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $997.

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 Boston to Bulgaria when you can find flight prices for as low as $816. 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 morning, with an average ticket price of $1,022. Departure times in the morning 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 Boston when booking weeks ahead of your departure date. In general, you can expect to find flights to Bulgaria for around $767 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 $665 on momondo.

Can stopping save me money on Boston to Bulgaria flights?

You could potentially save up to 62% 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

Direct flights

None
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 $355Free CancellationRating
7.6
864 reviews
Search Austrian Airlines flights
KLMPriceFrom $407Free CancellationRating
7.7
1,405 reviews
Search KLM flights
Air FrancePriceFrom $416Free CancellationRating
7.4
1,484 reviews
Search Air France flights
SWISSPriceFrom $436Free CancellationRating
7.5
1,778 reviews
Search SWISS flights
LufthansaPriceFrom $451Free CancellationRating
6.8
7,555 reviews
Search Lufthansa flights
United AirlinesPriceFrom $472Free CancellationRating
7.4
9,004 reviews
Search United Airlines flights
ITA AirwaysPriceFrom $505Free CancellationRating
6.7
1,080 reviews
Search ITA Airways flights
British AirwaysPriceFrom $510Free CancellationRating
6.7
7,496 reviews
Search British Airways flights
Turkish AirlinesPriceFrom $520Free CancellationRating
7.3
4,031 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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