Cheap flights from Boston (BOS) to Sofia (SOF)

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The best prices from Boston Logan Intl to Sofia are usually found in September or February, booked 57 days in advance, depart on a Tuesday or Wednesday and return on a Sunday

How to find the cheapest flight from
Boston (BOS) to Sofia (SOF)

All the information you need to plan the best BOS to SOF flight in 2021: compare Boston to Sofia flight prices with the expected peak season, weather and rainfall in Sofia.
BOS - SOF
Price
$706 - $897
SOF
Temperature
30.2 - 68 °F
SOF
Precipitation
1.2 - 2.8 inches

Popular in

December

High demand for flights, 12% potential price rise

Cheapest in

September

Best time to find cheap flights, 11% potential price drop

Round-trip from

$706

From Boston Logan Intl to Sofia

One-way from

$321

One-way flight from Boston Logan Intl to Sofia

Flight route prices based on searches on Cheapflights within the last 3 days, monthly prices based on aggregated historical data.
What is the cheapest day to fly round-trip from Boston to Sofia?

Thursday flights are found to be more expensive to fly from Boston to Sofia. This shouldn’t discourage you from searching, as you can still find great deals by being flexible with your options. Use our search form to find deals on tickets to Sofia.

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

Travelers have found it’s best to book a flight 57 days in advance to save up to 22% compared to booking the same week of travel. As your travel date approaches, the cost of this flight route may potentially increase. While opting to book 57 days out may not be an option for all, there are still additional ways to secure a deal in the near future. You might find a flight from Boston to Sofia 1-2 weeks in advance for as low as $848, or $890 for flights within the next 24 hours.

What is the cheapest month to fly from Boston to Sofia?

Due to multiple factors, expect to potentially pay more when booking in December. For low rates, September can be a great choice for travel to Sofia. Flights to Sofia from Boston in September are about $791 on average during September, but can be found for as low as $361.

When is the cheapest time to fly from Boston to Sofia (BOS - SOF)?

When flying from Boston to Sofia, the time of day you fly usually plays a role in the price. Save by searching for a flight in the morning, which can drop the price by up to 63% versus a flight in the afternoon.

Cheap flights from Boston to Sofia in October, November 2021

The best prices found for BOS to SOF flights for October, November
27 Oct - 8 Nov
$496pp
BOS
Boston Logan Intl
Turkish Airlines
 
1 STOP
SOF
Sofia
SOF
Sofia
Turkish Airlines
 
1 STOP
BOS
Boston Logan Intl
2 Nov - 16 Nov
$510pp
BOS
Boston Logan Intl
Lufthansa
 
1 STOP
SOF
Sofia
SOF
Sofia
Lufthansa
 
1 STOP
BOS
Boston Logan Intl
27 Oct - 8 Nov
$514pp
BOS
Boston Logan Intl
Lufthansa
   
2 STOPS
SOF
Sofia
SOF
Sofia
Lufthansa
 
1 STOP
BOS
Boston Logan Intl

Boston Logan Intl to Sofia 2021 flight deals

Cheap flights to Sofia from Boston found for this year
1 Dec - 15 Dec
$496pp
BOS
Boston Logan Intl
Turkish Airlines
 
1 STOP
SOF
Sofia
SOF
Sofia
Turkish Airlines
 
1 STOP
BOS
Boston Logan Intl
2 Nov - 16 Nov
$510pp
BOS
Boston Logan Intl
Lufthansa
 
1 STOP
SOF
Sofia
SOF
Sofia
Lufthansa
 
1 STOP
BOS
Boston Logan Intl
27 Oct - 8 Nov
$514pp
BOS
Boston Logan Intl
Lufthansa
   
2 STOPS
SOF
Sofia
SOF
Sofia
Lufthansa
 
1 STOP
BOS
Boston Logan Intl

Last minute flights from Boston to Sofia

Late deals on round-trip flights to Sofia from Boston, departing today and this week
21 Oct - 24 Oct
$510pp
BOS
Boston Logan Intl
Lufthansa
 
1 STOP
SOF
Sofia
SOF
Sofia
Lufthansa
 
1 STOP
BOS
Boston Logan Intl
21 Oct - 24 Oct
$554pp
BOS
Boston Logan Intl
Lufthansa
 
1 STOP
SOF
Sofia
SOF
Sofia
Lufthansa
 
1 STOP
BOS
Boston Logan Intl
21 Oct - 24 Oct
$557pp
BOS
Boston Logan Intl
Lufthansa
   
2 STOPS
SOF
Sofia
SOF
Sofia
Lufthansa
 
1 STOP
BOS
Boston Logan Intl

One-way flights to Sofia from Boston

The cheapest one-way flights from Boston to Sofia
2:05 pm - 6:15 pm
Multiple Airlines
1 Stop
21h 10m
BOS - SOF
Multiple Airlines
3:25 pm - 5:55 pm
Lufthansa
1 Stop
19h 30m
BOS - SOF
Lufthansa
$520
SnapTravelAir
2:30 am - 8:50 am
Multiple Airlines
1 Stop
23h 20m
BOS - SOF
Multiple Airlines

Related info for your journey

Useful info, stats and facts about <span class="emphasized">Boston</span> to <span class="emphasized">Sofia</span> flights.

Flight FAQs

From Boston to Sofia

Which airlines flying from Boston Logan Intl to Sofia have flexible cancellations due to COVID-19?

Some of the carriers operating flights from Boston Logan Intl to Sofia that may be offering flexible cancellation policies are Lufthansa, British Airways, and Turkish Airlines. Our site will let you filter for all airlines offering greater flexibility due to COVID-19.

Can I find flights from Boston to Sofia for under $500 on Cheapflights?

Yes, there are multiple flights from Boston to Sofia for under $500. The cheapest flight booked recently is on Turkish Airlines for just $496, but on average you can expect to pay $525.

Are there last-minute flights available from Boston to Sofia for under $600?

There are currently 13+ open flights from Boston to Sofia within the next 7 days for less than $600.

How popular is this Boston to Sofia flight route?

This flight path from Boston Logan Intl to Sofia was viewed by 40 users in the past month. Keep an eye out for changes in search interest prior to high and low season.

What are the cheapest airlines flying from Boston to Sofia round-trip?

Turkish Airlines, at $496, was found to be the cheapest airline from Boston to Sofia.Alternate airlines to your destination round-trip include Lufthansa and SWISS. Turkish Airlines is 37% cheaper than the average price of flights available within the next 90 days to this destination.

What are the cheapest flights from Boston to Sofia?

On average you can expect to pay $1,624 for a flight from Boston to Sofia. The cheapest flight overall is $204 while the most popular route, (Boston Logan Intl - Sofia) is currently priced at $497.

What are the most popular airlines that fly from Boston to Sofia?

Consider Major Airline, American Airlines or Air France when booking your flight. These represent the most popular airlines when flying from Boston to Sofia.

COVID Restrictions

View COVID Travel Restrictions for Sofia, Bulgaria

Do I need a COVID test to fly to Sofia from Boston?

Information is based on travel restrictions from Boston Logan Intl to Sofia

Most visitors from Boston Logan Intl need to provide a negative COVID-19 test result and/or quarantine to enter Sofia.

COVID-19 testing requirements
Visitors from Boston Logan Intl must present a negative RT-PCR (NAAT) test taken 72 hours before departing to Sofia.

Quarantine requirements
Visitors from Boston Logan Intl are not required to quarantine after entering Sofia.

Do I need a test to fly back to Boston from Sofia?

Returning to Boston Logan Intl from Sofia

COVID-19 testing requirements
Visitors from Sofia must present a negative RT-PCR (NAAT) or Antigen (quick-test) test taken 72 hours before departing to Boston Logan Intl.

Quarantine requirements
Visitors from Sofia are not required to quarantine after entering Boston Logan Intl.

Hide COVID Travel Restrictions for Sofia, Bulgaria

Destination information for Sofia

Things to know before you go - useful duration and weather info for your trip from Boston to Sofia.
Today's exchange rate
$1 = 1.70 Лв
Average temperature for October in Sofia
64.4 °F
Avg rainfall for October in Sofia
2.2 ″

Airports servicing Boston

Airports servicing Sofia

Top 10 airlines flying from Boston Logan Intl to Sofia

The chart below displays the airlines Cheapflights users traveling from Boston to Sofia choose most often. Cheapest and average prices are based on aggregated data from the past 12 months.
Airline Cheapest Average Flexibility On-time COVID-19 safety
British Airways
$137 $472 No cancel fee 70%
Bulgaria Air
$158 $185 No cancel fee 73%

We couldn't confirm the COVID-19 safety measures taken by Bulgaria Air. Please check directly on their website for additional information.

Delta
$336 $478 No cancel fee N/A
Air France
$351 $1,043 No cancel fee 77%
Iberia
$352 $425 No cancel fee 77%
American Airlines
$358 $853 No cancel fee 71%
KLM
$515 $891 No cancel fee 75%
Turkish Airlines
$566 $880 No cancel fee 77%
Lufthansa
$614 $945 No cancel fee 76%
Alitalia
$661 $1,145 No cancel fee 81%
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