Distance From Tsar-Kaloyan Airfield to Ontario International Airport

The distance from Tsar-Kaloyan Airfield () to Ontario International Airport (ONT) is 6609 miles or 10636 kilometers or 5739 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.

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How long does it take to travel from Tsar-Kaloyan ( Bulgaria ) to Ontario ( United States )?

A one-way nonstop (direct) flight between Tsar-Kaloyan and Ontario takes around 15 hours 11 minutes.

Estimated flight time from Tsar-Kaloyan Airfield, Tsar-Kaloyan, Bulgaria to Ontario International Airport, Ontario, United States is 15 hours 11 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 • - ONT

Kilometers		10636 km
Statute Miles		6609 miles
Nautical Miles		5739 nm
Avg. Time of Flight		15 hours 11 minutes

Tsar-Kaloyan Airfield to Ontario International Airport Flight Route Map - to ONT Flight Path

Location of Tsar-Kaloyan Airfield & Ontario International Airport is given below.
Click the map to view Tsar-Kaloyan to Ontario nonstop flight path and travel direction.

Click to see flight route on Google Map between Tsar-Kaloyan, Bulgaria and Ontario, United States. .

Nonstop flight route between Tsar-Kaloyan, Bulgaria and Ontario, United States.

Time Difference Between the Airports • - ONT

Time difference between Tsar-Kaloyan (Bulgaria) and Ontario (United States) is 10 Hours.
Ontario time is 10 Hours behind Tsar-Kaloyan.

Location	Local Time
Tsar-Kaloyan (Bulgaria)	2026-06-15, 14:48:41 EEST
Ontario (United States)	2026-06-15, 04:48:41 PDT

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

Tsar-Kaloyan Airfield ( / ) Tsar-Kaloyan, Bulgaria

Destination

Ontario International Airport (ONT / KONT) Ontario, United States