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Cheap flights from Sofia to Boston from $361

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 9/16. 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
6:30 am - 9:05 pm
SOF
-
BOS
21h 35m
2 stops
Multiple Airlines Logo
10:55 pm - 1:35 am
BOS
-
SOF
19h 40m
1 stop
$502Multiple Airlines
Wed, Sep 23 - Wed, Oct 14
Multiple Airlines Logo
6:45 pm - 2:45 pm
SOF
-
BOS
27h 00m
2 stops
Multiple Airlines Logo
11:00 pm - 12:20 am
BOS
-
SOF
18h 20m
2 stops
$684Multiple Airlines
Wed, Sep 23 - Wed, Oct 14
Multiple Airlines Logo
6:45 pm - 8:20 pm
SOF
-
BOS
32h 35m
2 stops
Multiple Airlines Logo
8:50 pm - 6:20 pm
BOS
-
SOF
14h 30m
2 stops
$709Multiple Airlines
Wed, Sep 30 - Tue, Oct 20
Multiple Airlines Logo
7:00 am - 9:45 pm
SOF
-
BOS
21h 45m
1 stop
Multiple Airlines Logo
11:35 pm - 1:35 am
BOS
-
SOF
19h 00m
1 stop
$715Multiple Airlines
Thu, Aug 13 - Thu, Aug 27
Multiple Airlines Logo
9:40 pm - 9:05 pm
SOF
-
BOS
30h 25m
1 stop
Multiple Airlines Logo
8:50 pm - 1:15 am
BOS
-
SOF
21h 25m
2 stops
$716Multiple Airlines
Wed, Sep 30 - Tue, Oct 20
Multiple Airlines Logo
7:00 am - 9:45 pm
SOF
-
BOS
21h 45m
1 stop
Multiple Airlines Logo
11:35 pm - 11:35 pm
BOS
-
SOF
17h 00m
2 stops
$726Multiple Airlines
Thu, Aug 13 - Thu, Aug 27
Multiple Airlines Logo
9:40 pm - 9:05 pm
SOF
-
BOS
30h 25m
1 stop
Multiple Airlines Logo
9:40 pm - 12:25 pm
BOS
-
SOF
31h 45m
2 stops
$747Multiple Airlines
Wed, Sep 23 - Tue, Oct 13
Multiple Airlines Logo
1:25 pm - 7:50 pm
SOF
-
BOS
37h 25m
2 stops
Multiple Airlines Logo
5:10 pm - 3:05 pm
BOS
-
SOF
14h 55m
1 stop
$751Multiple Airlines
Mon, Sep 28 - Thu, Oct 15
Multiple Airlines Logo
9:40 pm - 8:20 pm
SOF
-
BOS
29h 40m
2 stops
Multiple Airlines Logo
8:50 pm - 12:40 am
BOS
-
SOF
20h 50m
3 stops
$757Multiple Airlines
Wed, Sep 23 - Wed, Oct 14
Multiple Airlines Logo
8:00 pm - 7:50 pm
SOF
-
BOS
30h 50m
2 stops
Multiple Airlines Logo
5:25 pm - 1:40 pm
BOS
-
SOF
13h 15m
1 stop
$758Multiple Airlines
Fri, Sep 18 - Fri, Sep 25

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Lufthansa flights from Sofia to Boston

Our best Lufthansa deals on Sofia to Boston flight tickets
Lufthansa
Aug 13
SOF6:30 amSofia
16h 10m
1 stop
BOS3:40 pmBoston Logan Intl
Aug 26
BOS10:00 pmBoston Logan Intl
13h 05m
1 stop
SOF6:05 pmSofia
$759
Lufthansa
Sep 23
SOF1:50 pmSofia
13h 20m
1 stop
BOS8:10 pmBoston Logan Intl
Oct 13
BOS8:05 pmBoston Logan Intl
15h 35m
1 stop
SOF6:40 pmSofia
$760
Lufthansa
Sep 28
SOF2:20 pmSofia
12h 50m
1 stop
BOS8:10 pmBoston Logan Intl
Oct 15
BOS5:45 pmBoston Logan Intl
17h 40m
1 stop
SOF6:25 pmSofia
$762

United Airlines flights from Sofia to Boston

Our best United Airlines deals on Sofia to Boston flight tickets
United Airlines
Aug 13
SOF6:30 amSofia
16h 10m
1 stop
BOS3:40 pmBoston Logan Intl
Sep 20
BOS8:05 pmBoston Logan Intl
20h 10m
1 stop
SOF11:15 pmSofia
$783
United Airlines
Aug 13
SOF6:30 amSofia
16h 10m
1 stop
BOS3:40 pmBoston Logan Intl
Aug 26
BOS8:05 pmBoston Logan Intl
20h 10m
1 stop
SOF11:15 pmSofia
$784
United Airlines
Oct 23
SOF6:20 amSofia
15h 21m
2 stops
BOS2:41 pmBoston Logan Intl
Feb 6
BOS8:40 pmBoston Logan Intl
19h 05m
1 stop
SOF10:45 pmSofia
$786

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 July 16, 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

Wed 9/23

6:30 am-9:05 pm

2 stops21h 35m

Boston Logan Intl

Wed 10/14

10:55 pm-1:35 am

1 stop19h 40m

$502

SofiaBoston

SOF - BOS

SOFBOS

Sofia

Wed 9/23

6:45 pm-2:45 pm

2 stops27h 00m

Boston Logan Intl

Wed 10/14

11:00 pm-12:20 am

2 stops18h 20m

$684

SofiaBoston

SOF - BOS

SOFBOS

Sofia

Wed 9/30

6:45 pm-8:20 pm

2 stops32h 35m

Boston Logan Intl

Tue 10/20

8:50 pm-6:20 pm

2 stops14h 30m

$709

SofiaBoston

SOF - BOS

SOFBOS

Sofia

Thu 8/13

7:00 am-9:45 pm

1 stop21h 45m

Boston Logan Intl

Thu 8/27

11:35 pm-1:35 am

1 stop19h 00m

$715

SofiaBoston

SOF - BOS

SOFBOS

Sofia

Wed 9/30

9:40 pm-9:05 pm

1 stop30h 25m

Boston Logan Intl

Tue 10/20

8:50 pm-1:15 am

2 stops21h 25m

$716
Quickest round-trip

SofiaBoston

SOF - BOS

SOFBOS

Sofia

Thu 8/13

7:00 am-9:45 pm

1 stop21h 45m

Boston Logan Intl

Thu 8/27

11:35 pm-11:35 pm

2 stops17h 00m

$726

SofiaBoston

SOF - BOS

SOFBOS

Sofia

Wed 9/23

9:40 pm-9:05 pm

1 stop30h 25m

Boston Logan Intl

Tue 10/13

9:40 pm-12:25 pm

2 stops31h 45m

$747

SofiaBoston

SOF - BOS

SOFBOS

Sofia

Mon 9/28

1:25 pm-7:50 pm

2 stops37h 25m

Boston Logan Intl

Thu 10/15

5:10 pm-3:05 pm

1 stop14h 55m

$751

SofiaBoston

SOF - BOS

SOFBOS

Sofia

Wed 9/23

9:40 pm-8:20 pm

2 stops29h 40m

Boston Logan Intl

Wed 10/14

8:50 pm-12:40 am

3 stops20h 50m

$757

SofiaBoston

SOF - BOS

SOFBOS

Sofia

Fri 9/18

8:00 pm-7:50 pm

2 stops30h 50m

Boston Logan Intl

Fri 9/25

5:25 pm-1:40 pm

1 stop13h 15m

$758

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?

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 30% 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

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 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
Austrian AirlinesPriceFrom $590Free CancellationRating
7.6
944 reviews
Search Austrian Airlines flights
KLMPriceFrom $592Free CancellationRating
7.8
1,539 reviews
Search KLM flights
United AirlinesPriceFrom $649Free CancellationRating
7.4
9,993 reviews
Search United Airlines flights
Turkish AirlinesPriceFrom $651Free CancellationRating
7.4
4,447 reviews
Search Turkish Airlines flights
LufthansaPriceFrom $658Free CancellationRating
6.8
8,137 reviews
Search Lufthansa flights
Air FrancePriceFrom $682Free CancellationRating
7.5
1,627 reviews
Search Air France 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
Cambridge
Plymouth
York Beach
Laconia
South Yarmouth
Kennebunkport
Revere
Gloucester
Warwick
South Portland
Brockton
Middletown
Everett
Falmouth
Chatham

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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