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Cheap flights from Boston to Bulgaria from $235

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 11/23. 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

Multiple Airlines Logo
8:40 pm - 6:20 pmBOS-SOF
14h 40m1 stop
Multiple Airlines Logo
6:45 pm - 2:05 pmSOF-BOS
26h 20m1 stop
$351Multiple Airlines
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Mon, Nov 3 - Mon, Nov 17
Multiple Airlines Logo
6:25 pm - 11:50 amBOS-SOF
10h 25m1 stop
Multiple Airlines Logo
2:00 pm - 6:35 pmSOF-BOS
11h 35m1 stop
$356Multiple Airlines
Find Deal
Tue, Nov 4 - Tue, Nov 18
Air France Logo
5:20 pm - 2:00 pmBOS-SOF
13h 40m1 stop
Air France Logo
7:10 am - 1:40 pmSOF-BOS
13h 30m1 stop
$366Air France
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Sun, Oct 19 - Tue, Nov 4
Lufthansa Logo
8:40 pm - 10:45 pmBOS-SOF
19h 05m1 stop
Lufthansa Logo
7:05 pm - 6:35 pmSOF-BOS
30h 30m1 stop
$395Lufthansa
Find Deal
Mon, Jan 12 - Mon, Jan 26
United Airlines Logo
2:21 pm - 10:45 pmBOS-SOF
25h 24m2 stops
United Airlines Logo
2:00 pm - 6:35 pmSOF-BOS
11h 35m1 stop
$397United Airlines
Find Deal
Wed, Nov 5 - Wed, Nov 19
United Airlines Logo
7:55 pm - 6:20 pmBOS-SOF
39h 25m2 stops
United Airlines Logo
6:05 am - 6:35 pmSOF-BOS
19h 30m1 stop
$399United Airlines
Find Deal
Sat, Nov 8 - Thu, Nov 20
Lufthansa Logo
8:40 pm - 6:20 pmBOS-SOF
14h 40m1 stop
Lufthansa Logo
2:00 pm - 6:35 pmSOF-BOS
11h 35m1 stop
$414Lufthansa
Find Deal
Sat, Nov 8 - Thu, Nov 20
British Airways Logo
7:25 am - 2:00 pmBOS-SOF
23h 35m1 stop
British Airways Logo
5:25 pm - 3:50 pmSOF-BOS
29h 25m2 stops
$432British Airways
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Sat, Oct 25 - Mon, Nov 3
Turkish Airlines Logo
9:35 pm - 2:45 amBOS-VAR
22h 10m1 stop
Turkish Airlines Logo
3:35 am - 7:40 pmVAR-BOS
23h 05m1 stop
$783Turkish Airlines
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Fri, Oct 3 - Thu, Oct 16
Turkish Airlines Logo
9:35 pm - 2:45 amBOS-VAR
22h 10m1 stop
Turkish Airlines Logo
3:35 am - 7:40 pmVAR-BOS
23h 05m1 stop
$816Turkish Airlines
Find Deal
Fri, Oct 3 - Thu, Oct 16

Austrian Airlines flights from Boston to Bulgaria

Our best Austrian Airlines deals on Boston to Bulgaria flight tickets
Austrian Airlines
Oct 15
BOS5:10 pmBoston Logan Intl
11h 30m
1 stop
SOF11:40 amSofia
Oct 29
SOF7:55 amSofia
16h 37m
2 stops
BOS6:32 pmBoston Logan Intl
$394
Find similar
Austrian Airlines
Oct 6
BOS5:10 pmBoston Logan Intl
18h 00m
1 stop
SOF6:10 pmSofia
Oct 20
SOF6:55 pmSofia
31h 01m
2 stops
BOS6:56 pmBoston Logan Intl
$401
Find similar
Austrian Airlines
Oct 3
BOS5:10 pmBoston Logan Intl
15h 05m
1 stop
VAR3:15 pmVarna
Oct 17
VAR4:00 pmVarna
28h 50m
1 stop
BOS1:50 pmBoston Logan Intl
$498
Find similar

SWISS flights from Boston to Bulgaria

Our best SWISS deals on Boston to Bulgaria flight tickets
SWISS
Nov 13
BOS9:50 pmBoston Logan Intl
32h 25m
2 stops
SOF1:15 pmSofia
Nov 23
SOF11:00 amSofia
16h 20m
1 stop
BOS8:20 pmBoston Logan Intl
$426
Find similar
SWISS
Sep 17
BOS5:05 pmBoston Logan Intl
35h 55m
2 stops
SOF12:00 pmSofia
Sep 27
SOF12:45 pmSofia
14h 10m
2 stops
BOS7:55 pmBoston Logan Intl
$1,405
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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 September 16, 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 11/3

8:40 pm-6:20 pm

1 stop14h 40m

Sofia

Mon 11/17

6:45 pm-2:05 pm

1 stop26h 20m

$351

BostonSofia

BOS - SOF

BOSSOF

Boston Logan Intl

Tue 11/4

6:25 pm-11:50 am

1 stop10h 25m

Sofia

Tue 11/18

2:00 pm-6:35 pm

1 stop11h 35m

$356

BostonSofia

BOS - SOF

BOSSOF

Boston Logan Intl

Sun 10/19

5:20 pm-2:00 pm

1 stop13h 40m

Sofia

Tue 11/4

7:10 am-1:40 pm

1 stop13h 30m

$366

BostonSofia

BOS - SOF

BOSSOF

Boston Logan Intl

Mon 1/12

8:40 pm-10:45 pm

1 stop19h 05m

Sofia

Mon 1/26

7:05 pm-6:35 pm

1 stop30h 30m

$395

BostonSofia

BOS - SOF

BOSSOF

Boston Logan Intl

Wed 11/5

2:21 pm-10:45 pm

2 stops25h 24m

Sofia

Wed 11/19

2:00 pm-6:35 pm

1 stop11h 35m

$397

BostonSofia

BOS - SOF

BOSSOF

Boston Logan Intl

Sat 11/8

7:55 pm-6:20 pm

2 stops39h 25m

Sofia

Thu 11/20

6:05 am-6:35 pm

1 stop19h 30m

$399

BostonSofia

BOS - SOF

BOSSOF

Boston Logan Intl

Sat 11/8

8:40 pm-6:20 pm

1 stop14h 40m

Sofia

Thu 11/20

2:00 pm-6:35 pm

1 stop11h 35m

$414

BostonSofia

BOS - SOF

BOSSOF

Boston Logan Intl

Sat 10/25

7:25 am-2:00 pm

1 stop23h 35m

Sofia

Mon 11/3

5:25 pm-3:50 pm

2 stops29h 25m

$432

BostonVarna

BOS - VAR

BOSVAR

Boston Logan Intl

Fri 10/3

9:35 pm-2:45 am

1 stop22h 10m

Varna

Thu 10/16

3:35 am-7:40 pm

1 stop23h 05m

$783

BostonVarna

BOS - VAR

BOSVAR

Boston Logan Intl

Fri 10/3

9:35 pm-2:45 am

1 stop22h 10m

Varna

Thu 10/16

3:35 am-7:40 pm

1 stop23h 05m

$816

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 September is also cheap. Prices for this month can be found on momondo for an average of $604.

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 $800 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 $644 on momondo.

Can stopping save me money on Boston to Bulgaria flights?

You could potentially save up to 63% 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
Air FrancePriceFrom $416Free CancellationRating
7.4
1,468 reviews
Search Air France flights
KLMPriceFrom $430Free CancellationRating
7.8
1,386 reviews
Search KLM flights
SWISSPriceFrom $437Free CancellationRating
7.6
1,737 reviews
Search SWISS flights
Austrian AirlinesPriceFrom $497Free CancellationRating
7.6
850 reviews
Search Austrian Airlines flights
United AirlinesPriceFrom $505Free CancellationRating
7.4
8,924 reviews
Search United Airlines flights
Turkish AirlinesPriceFrom $505Free CancellationRating
7.3
3,968 reviews
Search Turkish Airlines flights
ITA AirwaysPriceFrom $505Free CancellationRating
6.7
1,036 reviews
Search ITA Airways flights
British AirwaysPriceFrom $510Free CancellationRating
6.7
7,363 reviews
Search British Airways flights
LufthansaPriceFrom $530Free CancellationRating
6.8
7,407 reviews
Search Lufthansa 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

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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