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Cheap flights from Sofia to Boston from $294

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 10/19. 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 Sofia to Boston

Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
11:25 pm - 9:05 pmSOF  Sofia-BOS Boston Logan Intl
28h 40m1 stop Barcelona-El Prat
Multiple Airlines Logo
8:50 pm - 1:55 pmBOS  Boston Logan Intl-SOF Sofia
35h 05m2 stops Reykjavik Keflavik Intl Brussels Bruxelles-National
$563Multiple Airlines
Tue, Oct 20 - Wed, Oct 28
Multiple Airlines Logo
11:25 pm - 9:05 pmSOF  Sofia-BOS Boston Logan Intl
28h 40m1 stop Barcelona-El Prat
Multiple Airlines Logo
8:50 pm - 10:00 pmBOS  Boston Logan Intl-SOF Sofia
19h 10m2 stops Reykjavik Keflavik Intl London Heathrow
$569Multiple Airlines
Tue, Oct 20 - Thu, Oct 29
Turkish Airlines Logo
3:50 pm - 7:55 pmSOF  Sofia-BOS Boston Logan Intl
35h 05m1 stop Istanbul
Turkish Airlines Logo
9:50 pm - 3:00 pmBOS  Boston Logan Intl-SOF Sofia
34h 10m1 stop Istanbul
$783Turkish Airlines
Mon, Oct 5 - Sun, Oct 18
Turkish Airlines Logo
3:50 pm - 7:55 pmSOF  Sofia-BOS Boston Logan Intl
35h 05m1 stop Istanbul
Turkish Airlines Logo
9:50 pm - 8:45 amBOS  Boston Logan Intl-SOF Sofia
27h 55m1 stop Istanbul
$783Turkish Airlines
Tue, Oct 6 - Tue, Oct 13
Lufthansa Logo
6:10 am - 8:10 pmSOF  Sofia-BOS Boston Logan Intl
21h 00m1 stop Frankfurt am Main
Lufthansa Logo
8:05 pm - 11:15 pmBOS  Boston Logan Intl-SOF Sofia
20h 10m1 stop Munich Franz Josef Strauss
$784Lufthansa
Tue, Oct 6 - Mon, Oct 12
Lufthansa Logo
6:30 am - 8:10 pmSOF  Sofia-BOS Boston Logan Intl
20h 40m1 stop Frankfurt am Main
Lufthansa Logo
8:05 pm - 11:15 pmBOS  Boston Logan Intl-SOF Sofia
20h 10m1 stop Munich Franz Josef Strauss
$785Lufthansa
Thu, Oct 1 - Tue, Oct 13
United Airlines Logo
6:20 am - 8:10 pmSOF  Sofia-BOS Boston Logan Intl
20h 50m1 stop Frankfurt am Main
United Airlines Logo
9:40 pm - 10:55 pmBOS  Boston Logan Intl-SOF Sofia
19h 15m1 stop Munich Franz Josef Strauss
$802United Airlines
Mon, Oct 12 - Fri, Oct 30
United Airlines Logo
6:20 am - 8:10 pmSOF  Sofia-BOS Boston Logan Intl
20h 50m1 stop Frankfurt am Main
United Airlines Logo
10:30 am - 1:15 pmBOS  Boston Logan Intl-SOF Sofia
20h 45m2 stops Newark Munich Franz Josef Strauss
$802United Airlines
Sun, Oct 11 - Sun, Oct 25
Austrian Airlines Logo
6:45 pm - 6:53 pmSOF  Sofia-BOS Boston Logan Intl
31h 08m2 stops Vienna Intl Washington, D.C. Dulles Intl
Austrian Airlines Logo
6:55 pm - 6:00 pmBOS  Boston Logan Intl-SOF Sofia
16h 05m1 stop Vienna Intl
$951Austrian Airlines
Sun, Dec 20 - Tue, Jan 5
Austrian Airlines Logo
8:00 am - 1:50 pmSOF  Sofia-BOS Boston Logan Intl
12h 50m1 stop Vienna Intl
Austrian Airlines Logo
5:10 pm - 11:40 amBOS  Boston Logan Intl-SOF Sofia
11h 30m1 stop Vienna Intl
$1,047Austrian Airlines
Sat, Sep 19 - Thu, Sep 24

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Lufthansa flights from Sofia to Boston

Our best Lufthansa deals on Sofia to Boston flight tickets
Lufthansa
Oct 6
SOF6:10 amSofia
21h 00m
1 stop
BOS8:10 pmBoston Logan Intl
Oct 12
BOS8:05 pmBoston Logan Intl
20h 10m
1 stop
SOF11:15 pmSofia
$784
Lufthansa
Sep 29
SOF6:10 amSofia
21h 00m
1 stop
BOS8:10 pmBoston Logan Intl
Oct 6
BOS8:05 pmBoston Logan Intl
15h 35m
1 stop
SOF6:40 pmSofia
$785
Lufthansa
Aug 26
SOF6:10 amSofia
18h 30m
1 stop
BOS5:40 pmBoston Logan Intl
Sep 1
BOS8:05 pmBoston Logan Intl
15h 35m
1 stop
SOF6:40 pmSofia
$860

United Airlines flights from Sofia to Boston

Our best United Airlines deals on Sofia to Boston flight tickets
United Airlines
Aug 26
SOF6:20 amSofia
16h 20m
1 stop
BOS3:40 pmBoston Logan Intl
Sep 1
BOS7:23 pmBoston Logan Intl
16h 17m
2 stops
SOF6:40 pmSofia
$909
United Airlines
Aug 20
SOF12:55 pmSofia
11h 45m
1 stop
BOS5:40 pmBoston Logan Intl
Sep 10
BOS10:00 pmBoston Logan Intl
13h 25m
1 stop
SOF6:25 pmSofia
$1,003
United Airlines
Aug 20
SOF6:10 amSofia
18h 30m
1 stop
BOS5:40 pmBoston Logan Intl
Sep 10
BOS8:05 pmBoston Logan Intl
20h 10m
1 stop
SOF11:15 pmSofia
$1,030

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 August 17, 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 Sofia - BOS Boston Logan Intl

SOFBOS

Sofia

Tue 10/20

11:25 pm-9:05 pm

1 stop28h 40m

Boston Logan Intl

Wed 10/28

8:50 pm-1:55 pm

2 stops35h 05m

$563

SofiaBoston

SOF Sofia - BOS Boston Logan Intl

SOFBOS

Sofia

Tue 10/20

11:25 pm-9:05 pm

1 stop28h 40m

Boston Logan Intl

Thu 10/29

8:50 pm-10:00 pm

2 stops19h 10m

$569

SofiaBoston

SOF Sofia - BOS Boston Logan Intl

SOFBOS

Sofia

Mon 10/5

3:50 pm-7:55 pm

1 stop35h 05m

Boston Logan Intl

Sun 10/18

9:50 pm-3:00 pm

1 stop34h 10m

$783

SofiaBoston

SOF Sofia - BOS Boston Logan Intl

SOFBOS

Sofia

Tue 10/6

3:50 pm-7:55 pm

1 stop35h 05m

Boston Logan Intl

Tue 10/13

9:50 pm-8:45 am

1 stop27h 55m

$783

SofiaBoston

SOF Sofia - BOS Boston Logan Intl

SOFBOS

Sofia

Tue 10/6

6:10 am-8:10 pm

1 stop21h 00m

Boston Logan Intl

Mon 10/12

8:05 pm-11:15 pm

1 stop20h 10m

$784

SofiaBoston

SOF Sofia - BOS Boston Logan Intl

SOFBOS

Sofia

Thu 10/1

6:30 am-8:10 pm

1 stop20h 40m

Boston Logan Intl

Tue 10/13

8:05 pm-11:15 pm

1 stop20h 10m

$785

SofiaBoston

SOF Sofia - BOS Boston Logan Intl

SOFBOS

Sofia

Mon 10/12

6:20 am-8:10 pm

1 stop20h 50m

Boston Logan Intl

Fri 10/30

9:40 pm-10:55 pm

1 stop19h 15m

$802

SofiaBoston

SOF Sofia - BOS Boston Logan Intl

SOFBOS

Sofia

Sun 10/11

6:20 am-8:10 pm

1 stop20h 50m

Boston Logan Intl

Sun 10/25

10:30 am-1:15 pm

2 stops20h 45m

$802

SofiaBoston

SOF Sofia - BOS Boston Logan Intl

SOFBOS

Sofia

Sun 12/20

6:45 pm-6:53 pm

2 stops31h 08m

Boston Logan Intl

Tue 1/5

6:55 pm-6:00 pm

1 stop16h 05m

$951
Quickest round-trip

SofiaBoston

SOF Sofia - BOS Boston Logan Intl

SOFBOS

Sofia

Sat 9/19

8:00 am-1:50 pm

1 stop12h 50m

Boston Logan Intl

Thu 9/24

5:10 pm-11:40 am

1 stop11h 30m

$1,047

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

Prices are currently low for flights on this route.

Typical prices usually range from $757 to $844.
The lowest price recently found on this route was $563.

What is the cheapest month to fly to Boston?

In general, November 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 $675. If you aren’t able to travel during the month of November, then book flights to Boston from Sofia during January instead. Flights to Boston in January, while not as cheap as those in November, still average around $680.

How far in advance should I book a flight from Sofia 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 $799 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 $647 on momondo.

Can stopping save me money on Sofia to Boston flights?

You could potentially save up to 41% 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

11h 45m

Direct flights

None
The fastest flight from Sofia to Boston takes 11h 45m
There are no direct flights from Sofia to Boston. There are no popular flight routes from Sofia to Boston.
Search flight deals

Frequently asked questions about flying from Sofia to Boston

  • 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 11h 45m.

  • 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
Austrian AirlinesPriceFrom $590Free CancellationRating
7.6
947 reviews
Search Austrian Airlines flights
KLMPriceFrom $592Free CancellationRating
7.8
1,558 reviews
Search KLM flights
United AirlinesPriceFrom $649Free CancellationRating
7.4
10,107 reviews
Search United Airlines flights
LufthansaPriceFrom $667Free CancellationRating
6.8
8,196 reviews
Search Lufthansa flights
Air FrancePriceFrom $682Free CancellationRating
7.5
1,647 reviews
Search Air France flights
Turkish AirlinesPriceFrom $689Free CancellationRating
7.4
4,472 reviews
Search Turkish Airlines flights

Traveling to a place near Boston?

Book flights to Boston if you plan to visit one of these locations
Hampton Beach
Ogunquit
Salem
Old Orchard Beach
Laconia
Hampton
Cambridge
South Yarmouth
Plymouth
Revere
Middletown
Kennebunkport
Warwick
Gloucester
York Beach
Everett
South Portland
Brockton
Seekonk
Falmouth

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.

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