Distance From Karlovy Vary International Airport to Ontario International Airport, KLV - ONT Distance

The distance from Karlovy Vary International Airport (KLV) to Ontario International Airport (ONT) is 5879 miles or 9461 kilometers or 5105 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 Karlovy Vary ( Czech Republic ) to Ontario ( United States )?

A one-way nonstop (direct) flight between Karlovy Vary and Ontario takes around 13 hours 30 minutes.

Estimated flight time from Karlovy Vary International Airport, Karlovy Vary, Czech Republic to Ontario International Airport, Ontario, United States is 13 hours 30 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 • KLV - ONT

Kilometers		9461 km
Statute Miles		5879 miles
Nautical Miles		5105 nm
Avg. Time of Flight		13 hours 30 minutes

Karlovy Vary International Airport to Ontario International Airport Flight Route Map - KLV to ONT Flight Path

Location of Karlovy Vary International Airport & Ontario International Airport is given below.
Click the map to view Karlovy Vary to Ontario nonstop flight path and travel direction.

Click to see flight route on Google Map between Karlovy Vary, Czech Republic and Ontario, United States. .

Nonstop flight route between Karlovy Vary, Czech Republic and Ontario, United States.

Time Difference Between the Airports • KLV - ONT

Time difference between Karlovy Vary (Czech Republic) and Ontario (United States) is 9 Hours.
Ontario time is 9 Hours behind Karlovy Vary.

Location	Local Time
Karlovy Vary (Czech Republic)	2026-08-24, 08:48:23 CEST
Ontario (United States)	2026-08-23, 23:48:23 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

Karlovy Vary International Airport (KLV / LKKV) Karlovy Vary, Czech Republic

Destination

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