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Cheap flights from Sofia to Boston from $359

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 3/31. 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
6:00 am - 6:50 pm
SOF
-
BOS
19h 50m
2 stops
Multiple Airlines Logo
8:50 pm - 2:55 am
BOS
-
SOF
23h 05m
2 stops
$549Multiple Airlines
Thu, May 7 - Thu, May 14
Multiple Airlines Logo
11:45 pm - 9:55 pm
SOF
-
BOS
52h 10m
2 stops
Multiple Airlines Logo
5:10 pm - 3:20 pm
BOS
-
SOF
15h 10m
1 stop
$566Multiple Airlines
Sun, Mar 15 - Tue, Oct 20
Multiple Airlines Logo
11:45 pm - 9:05 pm
SOF
-
BOS
28h 20m
2 stops
Multiple Airlines Logo
10:50 pm - 9:25 pm
BOS
-
SOF
15h 35m
1 stop
$585Multiple Airlines
Tue, Apr 14 - Mon, Apr 27
Multiple Airlines Logo
9:50 pm - 9:05 pm
SOF
-
BOS
30h 15m
1 stop
Multiple Airlines Logo
10:50 pm - 9:25 pm
BOS
-
SOF
15h 35m
1 stop
$589Multiple Airlines
Tue, Apr 14 - Mon, Apr 27
Multiple Airlines Logo
5:45 am - 9:05 pm
SOF
-
BOS
22h 20m
2 stops
Multiple Airlines Logo
10:50 pm - 1:30 am
BOS
-
SOF
19h 40m
1 stop
$592Multiple Airlines
Tue, Apr 14 - Wed, Apr 22
Multiple Airlines Logo
9:50 pm - 9:05 pm
SOF
-
BOS
30h 15m
1 stop
Multiple Airlines Logo
10:50 pm - 8:30 pm
BOS
-
SOF
14h 40m
2 stops
$599Multiple Airlines
Tue, Apr 14 - Fri, Apr 24
Multiple Airlines Logo
7:30 pm - 9:05 pm
SOF
-
BOS
32h 35m
2 stops
Multiple Airlines Logo
10:50 pm - 2:15 pm
BOS
-
SOF
32h 25m
1 stop
$600Multiple Airlines
Thu, Apr 9 - Sat, Apr 25
Multiple Airlines Logo
7:00 pm - 9:05 pm
SOF
-
BOS
33h 05m
2 stops
Multiple Airlines Logo
10:50 pm - 2:15 pm
BOS
-
SOF
32h 25m
1 stop
$601Multiple Airlines
Thu, Apr 9 - Sat, Apr 25
Multiple Airlines Logo
9:55 am - 9:05 pm
SOF
-
BOS
42h 10m
2 stops
Multiple Airlines Logo
10:50 pm - 2:15 pm
BOS
-
SOF
32h 25m
1 stop
$602Multiple Airlines
Sun, Apr 12 - Sat, Apr 25
Multiple Airlines Logo
7:00 pm - 9:05 pm
SOF
-
BOS
33h 05m
2 stops
Multiple Airlines Logo
10:50 pm - 2:15 pm
BOS
-
SOF
32h 25m
1 stop
$608Multiple Airlines
Thu, Apr 9 - Sat, Apr 25

KLM flights from Sofia to Boston

Our best KLM deals on Sofia to Boston flight tickets
KLM
Apr 29
SOF7:00 amSofia
13h 13m
1 stop
BOS1:13 pmBoston Logan Intl
May 5
BOS9:02 amBoston Logan Intl
21h 58m
2 stops
SOF2:00 pmSofia
$627
KLM
Mar 12
SOF7:00 amSofia
13h 20m
1 stop
BOS2:20 pmBoston Logan Intl
Mar 24
BOS8:10 pmBoston Logan Intl
11h 55m
1 stop
SOF2:05 pmSofia
$630
KLM
Apr 29
SOF7:00 amSofia
31h 29m
2 stops
BOS7:29 amBoston Logan Intl
May 5
BOS9:02 amBoston Logan Intl
21h 58m
2 stops
SOF2:00 pmSofia
$633

United Airlines flights from Sofia to Boston

Our best United Airlines deals on Sofia to Boston flight tickets
United Airlines
Mar 12
SOF6:00 amSofia
14h 10m
1 stop
BOS2:10 pmBoston Logan Intl
Mar 24
BOS9:40 pmBoston Logan Intl
14h 40m
1 stop
SOF6:20 pmSofia
$661
United Airlines
Mar 12
SOF6:00 amSofia
14h 10m
1 stop
BOS2:10 pmBoston Logan Intl
Mar 24
BOS6:30 pmBoston Logan Intl
17h 50m
2 stops
SOF6:20 pmSofia
$665
United Airlines
Mar 13
SOF6:10 amSofia
20h 05m
2 stops
BOS8:15 pmBoston Logan Intl
Mar 23
BOS9:40 pmBoston Logan Intl
14h 40m
1 stop
SOF6:20 pmSofia
$668

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 February 22, 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

SofiaBoston

SOF - BOS

SOFBOS

Sofia

Thu 5/7

6:00 am-6:50 pm

2 stops19h 50m

Boston Logan Intl

Thu 5/14

8:50 pm-2:55 am

2 stops23h 05m

$549

SofiaBoston

SOF - BOS

SOFBOS

Sofia

Sun 3/15

11:45 pm-9:55 pm

2 stops52h 10m

Boston Logan Intl

Tue 10/20

5:10 pm-3:20 pm

1 stop15h 10m

$566

SofiaBoston

SOF - BOS

SOFBOS

Sofia

Tue 4/14

11:45 pm-9:05 pm

2 stops28h 20m

Boston Logan Intl

Mon 4/27

10:50 pm-9:25 pm

1 stop15h 35m

$585

SofiaBoston

SOF - BOS

SOFBOS

Sofia

Tue 4/14

9:50 pm-9:05 pm

1 stop30h 15m

Boston Logan Intl

Mon 4/27

10:50 pm-9:25 pm

1 stop15h 35m

$589

SofiaBoston

SOF - BOS

SOFBOS

Sofia

Tue 4/14

5:45 am-9:05 pm

2 stops22h 20m

Boston Logan Intl

Wed 4/22

10:50 pm-1:30 am

1 stop19h 40m

$592

SofiaBoston

SOF - BOS

SOFBOS

Sofia

Tue 4/14

9:50 pm-9:05 pm

1 stop30h 15m

Boston Logan Intl

Fri 4/24

10:50 pm-8:30 pm

2 stops14h 40m

$599

SofiaBoston

SOF - BOS

SOFBOS

Sofia

Thu 4/9

7:30 pm-9:05 pm

2 stops32h 35m

Boston Logan Intl

Sat 4/25

10:50 pm-2:15 pm

1 stop32h 25m

$600

SofiaBoston

SOF - BOS

SOFBOS

Sofia

Thu 4/9

7:00 pm-9:05 pm

2 stops33h 05m

Boston Logan Intl

Sat 4/25

10:50 pm-2:15 pm

1 stop32h 25m

$601

SofiaBoston

SOF - BOS

SOFBOS

Sofia

Sun 4/12

9:55 am-9:05 pm

2 stops42h 10m

Boston Logan Intl

Sat 4/25

10:50 pm-2:15 pm

1 stop32h 25m

$602

SofiaBoston

SOF - BOS

SOFBOS

Sofia

Thu 4/9

7:00 pm-9:05 pm

2 stops33h 05m

Boston Logan Intl

Sat 4/25

10:50 pm-2:15 pm

1 stop32h 25m

$608

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 February instead. Flights to Boston in February, while not as cheap as those in January, still average around $652.

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 $717 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 $547 on momondo.

Can stopping save me money on Sofia to Boston flights?

You could potentially save up to 18% on your flight if you consider stops on a Sofia to Boston flight.

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

13h 00m

Direct flights

None
The fastest flight from Sofia to Boston takes 13h 00m
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 13h 00m.

  • 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
1,536 reviews
Search Air France flights
KLMPriceFrom $562Free CancellationRating
7.7
1,457 reviews
Search KLM flights
Austrian AirlinesPriceFrom $588Free CancellationRating
7.5
898 reviews
Search Austrian Airlines flights
Turkish AirlinesPriceFrom $597Free CancellationRating
7.3
4,231 reviews
Search Turkish Airlines flights
LufthansaPriceFrom $625Free CancellationRating
6.8
7,802 reviews
Search Lufthansa flights
United AirlinesPriceFrom $630Free CancellationRating
7.4
9,339 reviews
Search United Airlines flights
ITA AirwaysPriceFrom $819Free CancellationRating
6.7
1,151 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
Laconia
Warwick
Nashua
Chatham
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

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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