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Cheap flights from Boston to Bulgaria from $263

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 5/25. 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
9:50 pm - 6:20 pm
BOS
-
SOF
13h 30m
2 stops
Multiple Airlines Logo
7:55 am - 1:30 pm
SOF
-
BOS
12h 35m
1 stop
$598Multiple Airlines
Tue, Nov 3 - Tue, Nov 17
Austrian Airlines Logo
5:10 pm - 11:40 am
BOS
-
SOF
11h 30m
1 stop
Austrian Airlines Logo
6:55 pm - 1:50 pm
SOF
-
BOS
25h 55m
1 stop
$609Austrian Airlines
Tue, Sep 1 - Tue, Sep 15
Multiple Airlines Logo
8:05 pm - 8:45 pm
BOS
-
VAR
17h 40m
1 stop
Multiple Airlines Logo
9:10 pm - 7:55 pm
VAR
-
BOS
29h 45m
1 stop
$611Multiple Airlines
Tue, Aug 11 - Tue, Aug 25
United Airlines Logo
5:00 pm - 12:10 pm
BOS
-
SOF
36h 10m
2 stops
United Airlines Logo
7:55 am - 1:30 pm
SOF
-
BOS
12h 35m
1 stop
$622United Airlines
Sat, Aug 15 - Tue, Dec 15
Turkish Airlines Logo
9:50 pm - 8:15 pm
BOS
-
SOF
15h 25m
1 stop
Turkish Airlines Logo
9:05 pm - 7:55 pm
SOF
-
BOS
29h 50m
1 stop
$624Turkish Airlines
Tue, Oct 6 - Tue, Oct 20
SWISS Logo
5:20 pm - 10:20 am
BOS
-
SOF
10h 00m
1 stop
SWISS Logo
11:05 am - 7:55 pm
SOF
-
BOS
15h 50m
1 stop
$625SWISS
Tue, Oct 13 - Wed, Oct 21
Turkish Airlines Logo
9:50 pm - 8:45 am
BOS
-
SOF
27h 55m
1 stop
Turkish Airlines Logo
9:35 am - 7:55 pm
SOF
-
BOS
17h 20m
1 stop
$628Turkish Airlines
Thu, Oct 1 - Thu, Oct 15
United Airlines Logo
1:30 pm - 1:15 pm
BOS
-
SOF
16h 45m
2 stops
United Airlines Logo
7:55 am - 6:13 pm
SOF
-
BOS
17h 18m
2 stops
$629United Airlines
Tue, Nov 3 - Tue, Nov 17
Lufthansa Logo
8:05 pm - 6:45 pm
BOS
-
VAR
15h 40m
2 stops
Lufthansa Logo
4:00 pm - 5:40 pm
VAR
-
BOS
32h 40m
2 stops
$666Lufthansa
Tue, Aug 4 - Tue, Aug 25
Lufthansa Logo
8:05 pm - 8:45 pm
BOS
-
VAR
17h 40m
1 stop
Lufthansa Logo
9:30 pm - 5:40 pm
VAR
-
BOS
27h 10m
1 stop
$668Lufthansa
Tue, Sep 1 - Wed, Sep 16

Air Canada flights from Boston to Bulgaria

Our best Air Canada deals on Boston to Bulgaria flight tickets
Air Canada
Sep 8
BOS3:35 pmBoston Logan Intl
20h 05m
2 stops
SOF6:40 pmSofia
Sep 22
SOF6:10 amSofia
22h 17m
2 stops
BOS9:27 pmBoston Logan Intl
$653
Air Canada
Sep 1
BOS3:35 pmBoston Logan Intl
20h 05m
2 stops
SOF6:40 pmSofia
Sep 16
SOF1:50 pmSofia
34h 52m
2 stops
BOS5:42 pmBoston Logan Intl
$658
Air Canada
Sep 2
BOS10:50 amBoston Logan Intl
18h 20m
2 stops
SOF12:10 pmSofia
Sep 16
SOF1:50 pmSofia
34h 52m
2 stops
BOS5:42 pmBoston Logan Intl
$663

KLM flights from Boston to Bulgaria

Our best KLM deals on Boston to Bulgaria flight tickets
KLM
Jul 14
BOS4:40 pmBoston Logan Intl
14h 20m
1 stop
SOF2:00 pmSofia
Aug 25
SOF7:00 amSofia
13h 18m
1 stop
BOS1:18 pmBoston Logan Intl
$659
KLM
Jul 14
BOS1:35 pmBoston Logan Intl
17h 25m
2 stops
SOF2:00 pmSofia
Aug 25
SOF7:00 amSofia
16h 37m
1 stop
BOS4:37 pmBoston Logan Intl
$664
KLM
May 18
BOS4:35 pmBoston Logan Intl
14h 25m
1 stop
SOF2:00 pmSofia
Sep 30
SOF7:00 amSofia
16h 35m
1 stop
BOS4:35 pmBoston Logan Intl
$689

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 May 8, 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

Cheapest round-trip

BostonSofia

BOS - SOF

BOSSOF

Boston Logan Intl

Tue 11/3

9:50 pm-6:20 pm

2 stops13h 30m

Sofia

Tue 11/17

7:55 am-1:30 pm

1 stop12h 35m

$598

BostonSofia

BOS - SOF

BOSSOF

Boston Logan Intl

Tue 9/1

5:10 pm-11:40 am

1 stop11h 30m

Sofia

Tue 9/15

6:55 pm-1:50 pm

1 stop25h 55m

$609

BostonVarna

BOS - VAR

BOSVAR

Boston Logan Intl

Tue 8/11

8:05 pm-8:45 pm

1 stop17h 40m

Varna

Tue 8/25

9:10 pm-7:55 pm

1 stop29h 45m

$611

BostonSofia

BOS - SOF

BOSSOF

Boston Logan Intl

Sat 8/15

5:00 pm-12:10 pm

2 stops36h 10m

Sofia

Tue 12/15

7:55 am-1:30 pm

1 stop12h 35m

$622

BostonSofia

BOS - SOF

BOSSOF

Boston Logan Intl

Tue 10/6

9:50 pm-8:15 pm

1 stop15h 25m

Sofia

Tue 10/20

9:05 pm-7:55 pm

1 stop29h 50m

$624
Quickest round-trip

BostonSofia

BOS - SOF

BOSSOF

Boston Logan Intl

Tue 10/13

5:20 pm-10:20 am

1 stop10h 00m

Sofia

Wed 10/21

11:05 am-7:55 pm

1 stop15h 50m

$625

BostonSofia

BOS - SOF

BOSSOF

Boston Logan Intl

Thu 10/1

9:50 pm-8:45 am

1 stop27h 55m

Sofia

Thu 10/15

9:35 am-7:55 pm

1 stop17h 20m

$628

BostonSofia

BOS - SOF

BOSSOF

Boston Logan Intl

Tue 11/3

1:30 pm-1:15 pm

2 stops16h 45m

Sofia

Tue 11/17

7:55 am-6:13 pm

2 stops17h 18m

$629

BostonVarna

BOS - VAR

BOSVAR

Boston Logan Intl

Tue 8/4

8:05 pm-6:45 pm

2 stops15h 40m

Varna

Tue 8/25

4:00 pm-5:40 pm

2 stops32h 40m

$666

BostonVarna

BOS - VAR

BOSVAR

Boston Logan Intl

Tue 9/1

8:05 pm-8:45 pm

1 stop17h 40m

Varna

Wed 9/16

9:30 pm-5:40 pm

1 stop27h 10m

$668

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 September, then flying in October is also cheap. Prices for this month can be found on momondo for an average of $316.

How far in advance should I book a flight from Boston 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 $630 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 $493 on momondo.

Can stopping save me money on Boston to Bulgaria flights?

You could potentially save up to 49% 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

12h 10m

Direct flights

None
The fastest flight from Boston to Bulgaria takes 12h 10m
There are no direct flights from Boston to Bulgaria. There are no popular flight routes from Boston to Bulgaria.
Search flight deals

Frequently asked questions about flying from Boston to Bulgaria

  • 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
7.6
915 reviews
Search Austrian Airlines flights
KLMPriceFrom $380Free CancellationRating
7.8
1,510 reviews
Search KLM flights
Air FrancePriceFrom $396Free CancellationRating
7.4
1,585 reviews
Search Air France flights
SWISSPriceFrom $410Free CancellationRating
7.6
1,937 reviews
Search SWISS flights
United AirlinesPriceFrom $415Free CancellationRating
7.4
9,693 reviews
Search United Airlines flights
LufthansaPriceFrom $416Free CancellationRating
6.8
7,980 reviews
Search Lufthansa flights
British AirwaysPriceFrom $478Free CancellationRating
6.7
7,952 reviews
Search British Airways flights
ITA AirwaysPriceFrom $505Free CancellationRating
6.7
1,208 reviews
Search ITA Airways flights
Turkish AirlinesPriceFrom $514Free CancellationRating
7.4
4,355 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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