Latest deals
Insights
When to book
FAQs
Reviews
Price Alerts

Cheap flights from Sofia to Boston from $355

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 5/27. 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

Discover deals from 900+ travel sites with momondo.

Save money when you book flights with momondo

Big names and deals

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Price Alerts

Not ready to book? to track prices.
Search flight deals

Find the cheapest flights from Sofia to Boston

Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
6:45 pm - 9:05 pm
SOF
-
BOS
33h 20m
1 stop
Multiple Airlines Logo
10:50 pm - 9:15 pm
BOS
-
SOF
15h 25m
1 stop
$545Multiple Airlines
Mon, May 11 - Tue, May 26
Multiple Airlines Logo
6:55 pm - 9:05 pm
SOF
-
BOS
33h 10m
2 stops
Multiple Airlines Logo
10:50 pm - 9:15 pm
BOS
-
SOF
15h 25m
1 stop
$547Multiple Airlines
Mon, May 11 - Tue, May 26
Multiple Airlines Logo
5:45 am - 9:05 pm
SOF
-
BOS
22h 20m
1 stop
Multiple Airlines Logo
10:50 pm - 1:35 am
BOS
-
SOF
19h 45m
1 stop
$585Multiple Airlines
Wed, May 13 - Sat, May 16
Multiple Airlines Logo
12:40 pm - 9:05 pm
SOF
-
BOS
15h 25m
1 stop
Multiple Airlines Logo
10:50 pm - 1:35 am
BOS
-
SOF
19h 45m
1 stop
$588Multiple Airlines
Fri, Apr 10 - Fri, Apr 24
Multiple Airlines Logo
10:10 am - 9:05 pm
SOF
-
BOS
17h 55m
1 stop
Multiple Airlines Logo
10:50 pm - 9:15 pm
BOS
-
SOF
15h 25m
1 stop
$596Multiple Airlines
Thu, May 14 - Tue, May 26
Multiple Airlines Logo
1:40 pm - 9:05 pm
SOF
-
BOS
14h 25m
1 stop
Multiple Airlines Logo
10:50 pm - 9:15 pm
BOS
-
SOF
15h 25m
1 stop
$608Multiple Airlines
Sat, May 16 - Tue, Jun 2
Multiple Airlines Logo
12:40 pm - 9:05 pm
SOF
-
BOS
15h 25m
1 stop
Multiple Airlines Logo
10:50 pm - 1:35 am
BOS
-
SOF
19h 45m
1 stop
$609Multiple Airlines
Fri, Apr 10 - Fri, Apr 24
Multiple Airlines Logo
6:30 am - 9:05 pm
SOF
-
BOS
21h 35m
2 stops
Multiple Airlines Logo
10:50 pm - 1:35 am
BOS
-
SOF
19h 45m
1 stop
$615Multiple Airlines
Wed, May 13 - Sat, May 16
Multiple Airlines Logo
6:30 am - 9:05 pm
SOF
-
BOS
21h 35m
2 stops
Multiple Airlines Logo
10:50 pm - 1:35 am
BOS
-
SOF
19h 45m
1 stop
$620Multiple Airlines
Wed, May 20 - Sat, May 23
Multiple Airlines Logo
1:40 pm - 9:05 pm
SOF
-
BOS
14h 25m
1 stop
Multiple Airlines Logo
10:50 pm - 9:10 pm
BOS
-
SOF
15h 20m
1 stop
$621Multiple Airlines
Sat, May 23 - Mon, Jun 8

KLM flights from Sofia to Boston

Our best KLM deals on Sofia to Boston flight tickets
KLM
May 21
SOF7:00 amSofia
16h 25m
1 stop
BOS4:25 pmBoston Logan Intl
Jun 11
BOS4:35 pmBoston Logan Intl
14h 25m
1 stop
SOF2:00 pmSofia
$662
KLM
Mar 12
SOF7:00 amSofia
13h 20m
1 stop
BOS2:20 pmBoston Logan Intl
Mar 23
BOS5:15 pmBoston Logan Intl
14h 50m
2 stops
SOF2:05 pmSofia
$814
KLM
Mar 12
SOF7:00 amSofia
13h 20m
1 stop
BOS2:20 pmBoston Logan Intl
Mar 23
BOS5:15 pmBoston Logan Intl
14h 50m
2 stops
SOF2:05 pmSofia
$815

Lufthansa flights from Sofia to Boston

Our best Lufthansa deals on Sofia to Boston flight tickets
Lufthansa
May 1
SOF6:20 amSofia
16h 20m
1 stop
BOS3:40 pmBoston Logan Intl
May 14
BOS5:45 pmBoston Logan Intl
12h 35m
1 stop
SOF1:20 pmSofia
$678
Lufthansa
Apr 23
SOF6:30 amSofia
16h 10m
1 stop
BOS3:40 pmBoston Logan Intl
May 2
BOS8:05 pmBoston Logan Intl
19h 55m
1 stop
SOF11:00 pmSofia
$685
Lufthansa
May 12
SOF6:10 amSofia
16h 30m
1 stop
BOS3:40 pmBoston Logan Intl
May 25
BOS5:45 pmBoston Logan Intl
12h 40m
1 stop
SOF1:25 pmSofia
$686

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 10, 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

Mon 5/11

6:45 pm-9:05 pm

1 stop33h 20m

Boston Logan Intl

Tue 5/26

10:50 pm-9:15 pm

1 stop15h 25m

$545

SofiaBoston

SOF - BOS

SOFBOS

Sofia

Mon 5/11

6:55 pm-9:05 pm

2 stops33h 10m

Boston Logan Intl

Tue 5/26

10:50 pm-9:15 pm

1 stop15h 25m

$547

SofiaBoston

SOF - BOS

SOFBOS

Sofia

Wed 5/13

5:45 am-9:05 pm

1 stop22h 20m

Boston Logan Intl

Sat 5/16

10:50 pm-1:35 am

1 stop19h 45m

$585

SofiaBoston

SOF - BOS

SOFBOS

Sofia

Fri 4/10

12:40 pm-9:05 pm

1 stop15h 25m

Boston Logan Intl

Fri 4/24

10:50 pm-1:35 am

1 stop19h 45m

$588

SofiaBoston

SOF - BOS

SOFBOS

Sofia

Thu 5/14

10:10 am-9:05 pm

1 stop17h 55m

Boston Logan Intl

Tue 5/26

10:50 pm-9:15 pm

1 stop15h 25m

$596

SofiaBoston

SOF - BOS

SOFBOS

Sofia

Sat 5/16

1:40 pm-9:05 pm

1 stop14h 25m

Boston Logan Intl

Tue 6/2

10:50 pm-9:15 pm

1 stop15h 25m

$608

SofiaBoston

SOF - BOS

SOFBOS

Sofia

Fri 4/10

12:40 pm-9:05 pm

1 stop15h 25m

Boston Logan Intl

Fri 4/24

10:50 pm-1:35 am

1 stop19h 45m

$609

SofiaBoston

SOF - BOS

SOFBOS

Sofia

Wed 5/13

6:30 am-9:05 pm

2 stops21h 35m

Boston Logan Intl

Sat 5/16

10:50 pm-1:35 am

1 stop19h 45m

$615

SofiaBoston

SOF - BOS

SOFBOS

Sofia

Wed 5/20

6:30 am-9:05 pm

2 stops21h 35m

Boston Logan Intl

Sat 5/23

10:50 pm-1:35 am

1 stop19h 45m

$620
Quickest round-trip

SofiaBoston

SOF - BOS

SOFBOS

Sofia

Sat 5/23

1:40 pm-9:05 pm

1 stop14h 25m

Boston Logan Intl

Mon 6/8

10:50 pm-9:10 pm

1 stop15h 20m

$621

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

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 typical price of a round-trip flight between Sofia and Boston?

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 $756 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 $614 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

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
1,543 reviews
Search Air France flights
KLMPriceFrom $562Free CancellationRating
7.8
1,468 reviews
Search KLM flights
Austrian AirlinesPriceFrom $588Free CancellationRating
7.6
901 reviews
Search Austrian Airlines flights
Turkish AirlinesPriceFrom $598Free CancellationRating
7.3
4,249 reviews
Search Turkish Airlines flights
United AirlinesPriceFrom $630Free CancellationRating
7.4
9,412 reviews
Search United Airlines flights
LufthansaPriceFrom $647Free CancellationRating
6.8
7,841 reviews
Search Lufthansa flights
ITA AirwaysPriceFrom $819Free CancellationRating
6.7
1,165 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
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.
Start using Trips
Find my bookings

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.
1 adult
Thu 4/9
Thu 4/16
By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to the United States