Distance From Palo Alto Airport of Santa Clara County to Sofia Airport, PAO - SOF Distance

The distance from Palo Alto Airport of Santa Clara County (PAO) to Sofia Airport (SOF) is 6490 miles or 10444 kilometers or 5636 nautical miles.

The distance shown below is direct flight distance between airports. Straight-line distance does not account for the surface between the two points. It is the distance a bird or airplane would travel between the two points when flying above the surface. The straight line distance is the direct route between two points, regardless of whether or not there are roads that connect them.

---

How long does it take to travel from Palo Alto ( United States ) to Sofia ( Bulgaria )?

A one-way nonstop (direct) flight between Palo Alto and Sofia takes around 14 hours 55 minutes.

Estimated flight time from Palo Alto Airport of Santa Clara County, Palo Alto, United States to Sofia Airport, Sofia, Bulgaria is 14 hours 55 minutes under avarage conditions. Your actual flying time may vary depending on wind direction/speed or weather conditions. This calculation does not include the departure and landing times of the aircraft. In addition, it does not cover the person identity check, ticket check-in and baggage collection times at the airport.

Travel Distance Between the Airports • PAO - SOF

Kilometers		10444 km
Statute Miles		6490 miles
Nautical Miles		5636 nm
Avg. Time of Flight		14 hours 55 minutes

Palo Alto Airport of Santa Clara County to Sofia Airport Flight Route Map - PAO to SOF Flight Path

Location of Palo Alto Airport of Santa Clara County & Sofia Airport is given below.
Click the map to view Palo Alto to Sofia nonstop flight path and travel direction.

Click to see flight route on Google Map between Palo Alto, United States and Sofia, Bulgaria. .

Nonstop flight route between Palo Alto, United States and Sofia, Bulgaria.

Time Difference Between the Airports • PAO - SOF

Time difference between Palo Alto (United States) and Sofia (Bulgaria) is 10 Hours.
Sofia time is 10 Hours ahead of Palo Alto.

Location	Local Time
Palo Alto (United States)	2025-12-05, 07:38:15 PST
Sofia (Bulgaria)	2025-12-05, 17:38:15 EET

Why should you arrive 3 hours before international flight? Flyers who are traveling to an international destination should arrive at the airport earlier than domestic flyers. This is because international flights can have additional check-in requirements, like passport verification, that need to be completed before you receive your boarding pass.

Origin

Palo Alto Airport of Santa Clara County (PAO / KPAO) Palo Alto, United States

Destination

Sofia Airport (SOF / LBSF) Sofia, Bulgaria