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Cheap flights from Boston to Bulgaria from $308

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 10/11. 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
1 adult, Economy, 0 bags

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Boston to Bulgaria

Cheap round-trip flights

Enter your travel dates to find the best prices.
Turkish Airlines Logo
9:50 pm - 8:30 amBOS  Boston Logan Intl-VAR Varna
27h 40m1 stop Istanbul
Turkish Airlines Logo
9:20 am - 7:55 pmVAR  Varna-BOS Boston Logan Intl
17h 35m1 stop Istanbul
$767Turkish Airlines
Mon, Sep 7 - Wed, Sep 16
Turkish Airlines Logo
9:50 pm - 8:30 amBOS  Boston Logan Intl-VAR Varna
27h 40m1 stop Istanbul
Turkish Airlines Logo
10:25 pm - 7:55 pmVAR  Varna-BOS Boston Logan Intl
28h 30m1 stop Istanbul
$782Turkish Airlines
Wed, Oct 7 - Fri, Oct 16
Multiple Airlines Logo
6:55 pm - 3:15 pmBOS  Boston Logan Intl-VAR Varna
13h 20m1 stop Vienna Intl
Multiple Airlines Logo
4:00 pm - 9:58 amVAR  Varna-BOS Boston Logan Intl
48h 58m2 stops Vienna Intl Montreal Pierre Elliott Trudeau Intl
$782Multiple Airlines
Tue, Dec 1 - Wed, Dec 9
Multiple Airlines Logo
1:30 pm - 3:15 pmBOS  Boston Logan Intl-VAR Varna
18h 45m2 stops Newark Vienna Intl
Multiple Airlines Logo
4:00 pm - 9:58 amVAR  Varna-BOS Boston Logan Intl
48h 58m2 stops Vienna Intl Montreal Pierre Elliott Trudeau Intl
$794Multiple Airlines
Tue, Dec 1 - Wed, Dec 9
Austrian Airlines Logo
12:00 pm - 3:15 pmBOS  Boston Logan Intl-VAR Varna
20h 15m2 stops Newark Vienna Intl
Austrian Airlines Logo
4:00 pm - 1:30 pmVAR  Varna-BOS Boston Logan Intl
28h 30m1 stop Vienna Intl
$825Austrian Airlines
Mon, Nov 30 - Mon, Dec 7
Austrian Airlines Logo
12:00 pm - 3:15 pmBOS  Boston Logan Intl-VAR Varna
20h 15m2 stops Newark Vienna Intl
Austrian Airlines Logo
4:00 pm - 6:49 pmVAR  Varna-BOS Boston Logan Intl
33h 49m2 stops Vienna Intl Washington, D.C. Dulles Intl
$829Austrian Airlines
Mon, Nov 30 - Mon, Dec 7
United Airlines Logo
6:33 pm - 6:20 pmBOS  Boston Logan Intl-SOF Sofia
16h 47m2 stops Chicago O'Hare Intl Munich Franz Josef Strauss
United Airlines Logo
7:55 am - 5:25 pmSOF  Sofia-BOS Boston Logan Intl
16h 30m2 stops Vienna Intl Newark
$837United Airlines
Wed, Jan 27 - Thu, Feb 4
United Airlines Logo
6:33 pm - 6:20 pmBOS  Boston Logan Intl-SOF Sofia
16h 47m2 stops Chicago O'Hare Intl Munich Franz Josef Strauss
United Airlines Logo
7:55 am - 6:13 pmSOF  Sofia-BOS Boston Logan Intl
17h 18m2 stops Vienna Intl Newark
$837United Airlines
Wed, Jan 27 - Fri, Feb 5
Lufthansa Logo
7:41 pm - 10:55 pmBOS  Boston Logan Intl-SOF Sofia
20h 14m2 stops Washington, D.C. Dulles Intl Munich Franz Josef Strauss
Lufthansa Logo
2:00 pm - 6:35 pmSOF  Sofia-BOS Boston Logan Intl
11h 35m1 stop Munich Franz Josef Strauss
$844Lufthansa
Tue, Nov 10 - Sun, Nov 22
Lufthansa Logo
8:40 pm - 10:55 pmBOS  Boston Logan Intl-SOF Sofia
19h 15m1 stop Munich Franz Josef Strauss
Lufthansa Logo
7:05 pm - 6:35 pmSOF  Sofia-BOS Boston Logan Intl
30h 30m1 stop Munich Franz Josef Strauss
$845Lufthansa
Tue, Jan 26 - Mon, Feb 1

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Lufthansa flights from Boston to Bulgaria

Our best Lufthansa deals on Boston to Bulgaria flight tickets
Lufthansa
Nov 17
BOS7:41 pmBoston Logan Intl
20h 14m
2 stops
SOF10:55 pmSofia
Dec 1
SOF6:00 amSofia
24h 54m
2 stops
BOS11:54 pmBoston Logan Intl
$847
Lufthansa
Aug 11
BOS8:05 pmBoston Logan Intl
20h 10m
1 stop
SOF11:15 pmSofia
Aug 18
SOF7:25 pmSofia
29h 15m
1 stop
BOS5:40 pmBoston Logan Intl
$870
Lufthansa
Sep 2
BOS8:05 pmBoston Logan Intl
15h 35m
1 stop
SOF6:40 pmSofia
Sep 9
SOF12:55 pmSofia
11h 45m
1 stop
BOS5:40 pmBoston Logan Intl
$871

SWISS flights from Boston to Bulgaria

Our best SWISS deals on Boston to Bulgaria flight tickets
SWISS
Aug 24
BOS5:10 pmBoston Logan Intl
12h 05m
1 stop
SOF12:15 pmSofia
Sep 7
SOF3:40 pmSofia
30h 30m
1 stop
BOS3:10 pmBoston Logan Intl
$873
SWISS
Aug 18
BOS5:10 pmBoston Logan Intl
10h 10m
1 stop
SOF10:20 amSofia
Sep 7
SOF3:40 pmSofia
30h 30m
1 stop
BOS3:10 pmBoston Logan Intl
$874
SWISS
Aug 19
BOS5:10 pmBoston Logan Intl
10h 10m
1 stop
SOF10:20 amSofia
Sep 7
SOF3:40 pmSofia
30h 30m
1 stop
BOS3:10 pmBoston Logan Intl
$880

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 August 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

Cheapest round-trip

BostonVarna

BOS Boston Logan Intl - VAR Varna

BOSVAR

Boston Logan Intl

Mon 9/7

9:50 pm-8:30 am

1 stop27h 40m

Varna

Wed 9/16

9:20 am-7:55 pm

1 stop17h 35m

$767

BostonVarna

BOS Boston Logan Intl - VAR Varna

BOSVAR

Boston Logan Intl

Wed 10/7

9:50 pm-8:30 am

1 stop27h 40m

Varna

Fri 10/16

10:25 pm-7:55 pm

1 stop28h 30m

$782

BostonVarna

BOS Boston Logan Intl - VAR Varna

BOSVAR

Boston Logan Intl

Tue 12/1

6:55 pm-3:15 pm

1 stop13h 20m

Varna

Wed 12/9

4:00 pm-9:58 am

2 stops48h 58m

$782

BostonVarna

BOS Boston Logan Intl - VAR Varna

BOSVAR

Boston Logan Intl

Tue 12/1

1:30 pm-3:15 pm

2 stops18h 45m

Varna

Wed 12/9

4:00 pm-9:58 am

2 stops48h 58m

$794

BostonVarna

BOS Boston Logan Intl - VAR Varna

BOSVAR

Boston Logan Intl

Mon 11/30

12:00 pm-3:15 pm

2 stops20h 15m

Varna

Mon 12/7

4:00 pm-1:30 pm

1 stop28h 30m

$825

BostonVarna

BOS Boston Logan Intl - VAR Varna

BOSVAR

Boston Logan Intl

Mon 11/30

12:00 pm-3:15 pm

2 stops20h 15m

Varna

Mon 12/7

4:00 pm-6:49 pm

2 stops33h 49m

$829

BostonSofia

BOS Boston Logan Intl - SOF Sofia

BOSSOF

Boston Logan Intl

Wed 1/27

6:33 pm-6:20 pm

2 stops16h 47m

Sofia

Thu 2/4

7:55 am-5:25 pm

2 stops16h 30m

$837

BostonSofia

BOS Boston Logan Intl - SOF Sofia

BOSSOF

Boston Logan Intl

Wed 1/27

6:33 pm-6:20 pm

2 stops16h 47m

Sofia

Fri 2/5

7:55 am-6:13 pm

2 stops17h 18m

$837
Quickest round-trip

BostonSofia

BOS Boston Logan Intl - SOF Sofia

BOSSOF

Boston Logan Intl

Tue 11/10

7:41 pm-10:55 pm

2 stops20h 14m

Sofia

Sun 11/22

2:00 pm-6:35 pm

1 stop11h 35m

$844

BostonSofia

BOS Boston Logan Intl - SOF Sofia

BOSSOF

Boston Logan Intl

Tue 1/26

8:40 pm-10:55 pm

1 stop19h 15m

Sofia

Mon 2/1

7:05 pm-6:35 pm

1 stop30h 30m

$845

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 November, then flying in February is also cheap. Prices for this month can be found on momondo for an average of $468.

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 $654 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 $474 on momondo.

Can stopping save me money on Boston to Bulgaria flights?

You could potentially save up to 52% 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

11h 25m

Direct flights

None
The fastest flight from Boston to Bulgaria takes 11h 25m
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
951 reviews
Search Austrian Airlines flights
KLMPriceFrom $380Free CancellationRating
7.8
1,555 reviews
Search KLM flights
United AirlinesPriceFrom $394Free CancellationRating
7.4
10,072 reviews
Search United Airlines flights
LufthansaPriceFrom $395Free CancellationRating
6.8
8,176 reviews
Search Lufthansa flights
Air FrancePriceFrom $396Free CancellationRating
7.5
1,637 reviews
Search Air France flights
SWISSPriceFrom $410Free CancellationRating
7.5
2,026 reviews
Search SWISS flights
British AirwaysPriceFrom $421Free CancellationRating
6.7
8,147 reviews
Search British Airways flights
Turkish AirlinesPriceFrom $514Free CancellationRating
7.4
4,468 reviews
Search Turkish Airlines flights
ITA AirwaysPriceFrom $694Free CancellationRating
6.7
1,308 reviews
Search ITA Airways 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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