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Cheap flights from Sofia to Boston from $392

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Sofia to Boston departing on 5/9. 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 Sofia to Boston

Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
11:25 pm - 9:05 pm
SOF
-
BOS
28h 40m
1 stop
Multiple Airlines Logo
10:50 pm - 9:45 am
BOS
-
SOF
27h 55m
1 stop
$587Multiple Airlines
Tue, May 26 - Tue, Jun 2
Multiple Airlines Logo
11:45 pm - 9:05 pm
SOF
-
BOS
28h 20m
2 stops
Multiple Airlines Logo
10:50 pm - 9:45 am
BOS
-
SOF
27h 55m
1 stop
$603Multiple Airlines
Tue, May 26 - Tue, Jun 2
Multiple Airlines Logo
7:30 pm - 9:05 pm
SOF
-
BOS
32h 35m
2 stops
Multiple Airlines Logo
10:50 pm - 9:45 am
BOS
-
SOF
27h 55m
1 stop
$629Multiple Airlines
Thu, May 21 - Tue, Jun 2
Multiple Airlines Logo
9:40 pm - 9:05 pm
SOF
-
BOS
30h 25m
1 stop
Multiple Airlines Logo
10:50 pm - 9:45 am
BOS
-
SOF
27h 55m
1 stop
$635Multiple Airlines
Wed, May 27 - Tue, Jun 9
Multiple Airlines Logo
7:00 am - 6:30 pm
SOF
-
BOS
18h 30m
1 stop
Multiple Airlines Logo
5:10 pm - 2:00 pm
BOS
-
SOF
13h 50m
1 stop
$665Multiple Airlines
Fri, Apr 17 - Sun, May 3
KLM Logo
7:00 am - 1:13 pm
SOF
-
BOS
13h 13m
1 stop
KLM Logo
4:35 pm - 2:00 pm
BOS
-
SOF
14h 25m
1 stop
$669KLM
Sun, Apr 5 - Tue, Apr 21
KLM Logo
7:00 am - 1:10 pm
SOF
-
BOS
13h 10m
1 stop
KLM Logo
4:35 pm - 2:00 pm
BOS
-
SOF
14h 25m
1 stop
$674KLM
Thu, May 21 - Sat, Jun 6
Turkish Airlines Logo
2:05 pm - 7:55 pm
SOF
-
BOS
12h 50m
1 stop
Turkish Airlines Logo
9:50 pm - 1:15 pm
BOS
-
SOF
32h 25m
1 stop
$684Turkish Airlines
Fri, Jun 19 - Fri, Aug 7
Multiple Airlines Logo
10:10 am - 9:05 pm
SOF
-
BOS
17h 55m
1 stop
Multiple Airlines Logo
10:50 pm - 9:45 am
BOS
-
SOF
27h 55m
1 stop
$686Multiple Airlines
Thu, May 21 - Tue, Jun 2
Turkish Airlines Logo
2:05 pm - 7:55 pm
SOF
-
BOS
12h 50m
1 stop
Turkish Airlines Logo
9:50 pm - 8:15 pm
BOS
-
SOF
15h 25m
1 stop
$690Turkish Airlines
Fri, Jun 19 - Fri, Aug 7

United Airlines flights from Sofia to Boston

Our best United Airlines deals on Sofia to Boston flight tickets
United Airlines
Jun 15
SOF2:20 pmSofia
12h 50m
1 stop
BOS8:10 pmBoston Logan Intl
Jul 5
BOS2:15 pmBoston Logan Intl
21h 25m
2 stops
SOF6:40 pmSofia
$731
United Airlines
Jun 16
SOF6:10 amSofia
21h 00m
1 stop
BOS8:10 pmBoston Logan Intl
Jul 4
BOS3:08 pmBoston Logan Intl
24h 42m
2 stops
SOF10:50 pmSofia
$732
United Airlines
Jun 10
SOF6:20 amSofia
16h 20m
1 stop
BOS3:40 pmBoston Logan Intl
Jun 29
BOS7:27 pmBoston Logan Intl
16h 13m
2 stops
SOF6:40 pmSofia
$733

Air Canada flights from Sofia to Boston

Our best Air Canada deals on Sofia to Boston flight tickets
Air Canada
Jun 19
SOF6:20 amSofia
34h 30m
2 stops
BOS9:50 amBoston Logan Intl
Jul 10
BOS5:45 amBoston Logan Intl
22h 05m
2 stops
SOF10:50 amSofia
$747
Air Canada
Mar 31
SOF6:10 amSofia
34h 39m
2 stops
BOS9:49 amBoston Logan Intl
Sep 28
BOS6:25 pmBoston Logan Intl
35h 40m
2 stops
SOF1:05 pmSofia
$819
Air Canada
Mar 31
SOF6:10 amSofia
34h 39m
2 stops
BOS9:49 amBoston Logan Intl
Sep 30
BOS3:35 pmBoston Logan Intl
20h 05m
2 stops
SOF6:40 pmSofia
$821

momondo Fare Finder

 
Customize your flight search to find flights from Sofia to Boston 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 March 18, 2026.
Use the filters below to find and compare flights from Sofia to Boston that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

SofiaBoston

SOF - BOS

SOFBOS

Sofia

Tue 5/26

11:25 pm-9:05 pm

1 stop28h 40m

Boston Logan Intl

Tue 6/2

10:50 pm-9:45 am

1 stop27h 55m

$587

SofiaBoston

SOF - BOS

SOFBOS

Sofia

Tue 5/26

11:45 pm-9:05 pm

2 stops28h 20m

Boston Logan Intl

Tue 6/2

10:50 pm-9:45 am

1 stop27h 55m

$603

SofiaBoston

SOF - BOS

SOFBOS

Sofia

Thu 5/21

7:30 pm-9:05 pm

2 stops32h 35m

Boston Logan Intl

Tue 6/2

10:50 pm-9:45 am

1 stop27h 55m

$629

SofiaBoston

SOF - BOS

SOFBOS

Sofia

Wed 5/27

9:40 pm-9:05 pm

1 stop30h 25m

Boston Logan Intl

Tue 6/9

10:50 pm-9:45 am

1 stop27h 55m

$635

SofiaBoston

SOF - BOS

SOFBOS

Sofia

Fri 4/17

7:00 am-6:30 pm

1 stop18h 30m

Boston Logan Intl

Sun 5/3

5:10 pm-2:00 pm

1 stop13h 50m

$665

SofiaBoston

SOF - BOS

SOFBOS

Sofia

Sun 4/5

7:00 am-1:13 pm

1 stop13h 13m

Boston Logan Intl

Tue 4/21

4:35 pm-2:00 pm

1 stop14h 25m

$669
Quickest round-trip

SofiaBoston

SOF - BOS

SOFBOS

Sofia

Thu 5/21

7:00 am-1:10 pm

1 stop13h 10m

Boston Logan Intl

Sat 6/6

4:35 pm-2:00 pm

1 stop14h 25m

$674

SofiaBoston

SOF - BOS

SOFBOS

Sofia

Fri 6/19

2:05 pm-7:55 pm

1 stop12h 50m

Boston Logan Intl

Fri 8/7

9:50 pm-1:15 pm

1 stop32h 25m

$684

SofiaBoston

SOF - BOS

SOFBOS

Sofia

Thu 5/21

10:10 am-9:05 pm

1 stop17h 55m

Boston Logan Intl

Tue 6/2

10:50 pm-9:45 am

1 stop27h 55m

$686

SofiaBoston

SOF - BOS

SOFBOS

Sofia

Fri 6/19

2:05 pm-7:55 pm

1 stop12h 50m

Boston Logan Intl

Fri 8/7

9:50 pm-8:15 pm

1 stop15h 25m

$690

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 Boston from

How to get the cheapest flight ticket from Sofia to Boston

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 Boston?

In general, January is the cheapest month to fly from Sofia to Boston. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $652. If you aren’t able to travel during the month of January, then book flights to Boston from Sofia during November instead. Flights to Boston in November, while not as cheap as those in January, still average around $675.

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

You are more likely to see cheaper flights to Boston from Sofia when booking weeks ahead of your departure date. In general, you can expect to find flights to Boston for around $753 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Boston from Sofia for as low as $623 on momondo.

How have Sofia to Boston flight prices changed over time?

When to book flights from Sofia to Boston

Are you open to changing your travel dates? Check out the ideal times to fly from Sofia to Boston according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Sofia to Boston (SOF to BOS) flight deals and tips

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

Fastest flight time

12h 50m

Direct flights

None
The fastest flight from Sofia to Boston takes 12h 50m
There are no direct flights from Sofia to Boston. There are no popular flight routes from Sofia to Boston.
Search flight deals

  • How far is Sofia to Boston Logan Intl by plane?

    The distance between Sofia and Boston Logan Intl is about 4519.3 mi. In terms of flight time, this usually takes a little over 12h 50m.

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

    Prices for flights from Sofia Airport to Boston Logan Intl Airport are updated daily.

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

  • How old do you have to be to fly from Sofia Airport to Boston Logan Intl Airport?

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Sofia Airport to Boston Logan Intl Airport.

  • What documentation or ID do you need to fly to Boston Logan Intl Airport?

    The travel and health documents you'll need for your trip to Boston Logan Intl Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Boston Logan Intl Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

  • What is the most popular airline from Sofia to Boston?

Best airlines flying from Sofia to Boston

Compare and see reviews for airlines that fly from Sofia to Boston with momondo
Airline
Rating
Free Cancellation
Price
Air FrancePriceFrom $561Free CancellationRating
7.4
1,546 reviews
Search Air France flights
KLMPriceFrom $562Free CancellationRating
7.8
1,473 reviews
Search KLM flights
Austrian AirlinesPriceFrom $590Free CancellationRating
7.6
900 reviews
Search Austrian Airlines flights
Turkish AirlinesPriceFrom $598Free CancellationRating
7.3
4,258 reviews
Search Turkish Airlines flights
United AirlinesPriceFrom $630Free CancellationRating
7.4
9,434 reviews
Search United Airlines flights
LufthansaPriceFrom $647Free CancellationRating
6.8
7,858 reviews
Search Lufthansa flights
ITA AirwaysPriceFrom $819Free CancellationRating
6.7
1,171 reviews
Search ITA Airways flights

Traveling to a place near Boston?

Book flights to Boston if you plan to visit one of these locations
Hampton Beach
Salem
Ogunquit
Old Orchard Beach
Hampton
York Beach
Kennebunkport
Plymouth
Cambridge
South Yarmouth
Narragansett
Gloucester
Falmouth
Brockton
Warwick
Laconia
Chatham
Nashua
Sturbridge
Everett

Why use momondo?

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

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Boston from Sofia.

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

Yes. momondo enables you to select and highlight flights to Boston from Sofia with this policy.

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

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

Yes. momondo can track prices for Sofia to Boston flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.

An easier way to manage your Boston trip

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