Boston (BOS) → Sofia (SOF)
About Boston to Sofia Flights
Discover the best flights from Boston to Sofia, covering 7,280 km in approximately 9h 36m. Boston (BOS) to Sofia (SOF) is one of the major long-haul routes connecting United States and Bulgaria. With 7 major airlines operating this route, travelers have plenty of options to choose from. Whether you're traveling for business or leisure, our comprehensive guide helps you find the best deals, understand seasonal price variations, and choose the right airline for your journey from Boston to Sofia.
12-Month Price History
Flight prices from Boston to Sofia vary significantly throughout the year. February typically offers the best deals with average prices around $1323, while July sees the highest prices, averaging $2240. Savvy travelers can save up to 41% by choosing their travel dates wisely.
Best Time to Fly
Cheapest Month
February
Save up to 40% on average
Most Expensive
July
Peak season pricing
Book in Advance
153 days
For best prices
Booking Tips
For the best prices on Boston to Sofia flights, we recommend booking 89 days in advance. International flights typically see price increases as the departure date approaches, so early booking is advisable. Tuesday and Wednesday departures often offer the lowest fares, while Friday and Sunday flights tend to be more expensive due to business and leisure travel demand. Consider flying early morning or late evening for additional savings, as these off-peak times usually have lower demand.
Airlines Serving This Route
| Airline | Economy | Business | First |
|---|---|---|---|
JetBlue Airways B6 | $1610 | $5120 | - |
American Airlines AA | $1900 | $7640 | $11430 |
British Airways BA | $2000 | $7100 | $11680 |
Bulgaria Air FB | $2010 | $7210 | $9900 |
United Airlines UA | $2090 | $7630 | $12690 |
Air France AF | $2290 | $7230 | $11650 |
Delta Air Lines DL | $2350 | $7580 | $13460 |
JetBlue Airways
B6
Economy
$1610
Business
$5120
First
-
American Airlines
AA
Economy
$1900
Business
$7640
First
$11430
British Airways
BA
Economy
$2000
Business
$7100
First
$11680
Bulgaria Air
FB
Economy
$2010
Business
$7210
First
$9900
United Airlines
UA
Economy
$2090
Business
$7630
First
$12690
Air France
AF
Economy
$2290
Business
$7230
First
$11650
Delta Air Lines
DL
Economy
$2350
Business
$7580
First
$13460
Prices shown are estimates based on historical data. Actual prices may vary based on dates, availability, and current promotions.
Alternative Flight Options
Hartford → Sofia
Bradley International (BDL) to Sofia (SOF)
Distance: 7,420 km
Average price: $1577
Portland → Sofia
Portland International Jetport (PWM) to Sofia (SOF)
Distance: 7,151 km
Average price: $1524
Boston → Skopje
Logan International (BOS) to Skopje International (SKP)
Distance: 7,208 km
Average price: $1536
Boston → Pristina
Logan International (BOS) to Pristina International (PRN)
Distance: 7,130 km
Average price: $1520
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Frequently Asked Questions
How long is the flight from Boston to Sofia?
The flight time from Boston (BOS) to Sofia (SOF) is approximately 9 hours and 36 minutes. This duration is for direct flights and may vary depending on aircraft type, weather conditions, and air traffic.
What is the distance between Boston and Sofia?
The aerial distance between Boston and Sofia is 7,280 kilometers (4,524 miles). This is the straight-line distance, which is used to calculate flight times.
Which airlines fly from Boston to Sofia?
Several airlines operate flights between Boston and Sofia, including Delta Air Lines, JetBlue Airways, Bulgaria Air and 4 more airlines. Most flights on this route include one or more stops.
What is the cheapest month to fly from Boston to Sofia?
Based on historical data, February typically offers the lowest airfares for flights from Boston to Sofia. However, prices can vary based on holidays, events, and airline promotions. We recommend checking our price calendar for the most up-to-date information.
How far in advance should I book my flight to Sofia?
For the best prices on Boston to Sofia flights, we recommend booking 135 days in advance. International flights generally require earlier booking than domestic routes.
Do I need a visa to travel from Boston to Sofia?
Visa requirements depend on your nationality and the purpose of your visit. Citizens of United States traveling to Bulgaria should check the latest visa requirements. Visit our partner site visarequirements.io for detailed visa information.
What is the time difference between Boston and Sofia?
Boston operates on America/New_York time zone, while Sofia is in the Europe/Sofia time zone. For current time differences and to plan your schedule, visit our partner site timezig.com for accurate timezone conversions.