Philadelphia (PHL) → Sofia (SOF)
About Philadelphia to Sofia Flights
Discover the best flights from Philadelphia to Sofia, covering 7,730 km in approximately 10h 10m. Philadelphia (PHL) 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 Philadelphia to Sofia.
12-Month Price History
Flight prices from Philadelphia to Sofia vary significantly throughout the year. October typically offers the best deals with average prices around $1658, while July sees the highest prices, averaging $2351. Savvy travelers can save up to 29% by choosing their travel dates wisely.
Best Time to Fly
Cheapest Month
October
Save up to 40% on average
Most Expensive
July
Peak season pricing
Book in Advance
93 days
For best prices
Booking Tips
For the best prices on Philadelphia to Sofia flights, we recommend booking 134 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 |
|---|---|---|---|
UPS Airlines 5X | $1410 | $4680 | $7940 |
British Airways BA | $1500 | $6120 | $8740 |
United Airlines UA | $1510 | $4300 | $8480 |
Piedmont Airlines PT | $1550 | $5120 | $7330 |
American Airlines AA | $1580 | $5670 | $8370 |
Bulgaria Air FB | $1640 | $4510 | $7850 |
Delta Air Lines DL | $1690 | $5770 | $8750 |
UPS Airlines
5X
Economy
$1410
Business
$4680
First
$7940
British Airways
BA
Economy
$1500
Business
$6120
First
$8740
United Airlines
UA
Economy
$1510
Business
$4300
First
$8480
Piedmont Airlines
PT
Economy
$1550
Business
$5120
First
$7330
American Airlines
AA
Economy
$1580
Business
$5670
First
$8370
Bulgaria Air
FB
Economy
$1640
Business
$4510
First
$7850
Delta Air Lines
DL
Economy
$1690
Business
$5770
First
$8750
Prices shown are estimates based on historical data. Actual prices may vary based on dates, availability, and current promotions.
Alternative Flight Options
New York → Sofia
John F. Kennedy International (JFK) to Sofia (SOF)
Distance: 7,580 km
Average price: $1608
Newark → Sofia
Newark Liberty International (EWR) to Sofia (SOF)
Distance: 7,603 km
Average price: $1613
Washington → Sofia
Ronald Reagan Washington National (DCA) to Sofia (SOF)
Distance: 7,922 km
Average price: $1675
Philadelphia → Skopje
Philadelphia International (PHL) to Skopje International (SKP)
Distance: 7,658 km
Average price: $1623
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Frequently Asked Questions
How long is the flight from Philadelphia to Sofia?
The flight time from Philadelphia (PHL) to Sofia (SOF) is approximately 10 hours and 10 minutes. This duration is for direct flights and may vary depending on aircraft type, weather conditions, and air traffic.
What is the distance between Philadelphia and Sofia?
The aerial distance between Philadelphia and Sofia is 7,730 kilometers (4,803 miles). This is the straight-line distance, which is used to calculate flight times.
Which airlines fly from Philadelphia to Sofia?
Several airlines operate flights between Philadelphia and Sofia, including Bulgaria Air, Piedmont Airlines, UPS Airlines and 4 more airlines. Most flights on this route include one or more stops.
What is the cheapest month to fly from Philadelphia to Sofia?
Based on historical data, February typically offers the lowest airfares for flights from Philadelphia 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 Philadelphia to Sofia flights, we recommend booking 100 days in advance. International flights generally require earlier booking than domestic routes.
Do I need a visa to travel from Philadelphia 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 Philadelphia and Sofia?
Philadelphia 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.