Port Columbus International Airport is 3 hours ahead of LA/Ontario International Airport.

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• How far is Columbus from Ontario?

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Current time

LA/Ontario International Airport   1:54 AM on Friday, Jul 11, 2025

Port Columbus International Airport   4:54 AM on Friday, Jul 11, 2025

Map from ONT to CMH

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Meeting planner for LA/Ontario International Airport and Port Columbus International Airport

To schedule a conference call or plan a meeting at the best time for both parties, you should try between 9:00 AM and 2:00 PM your time in ONT. That will end up being between 12:00 PM and 5:00 PM in CMH. The chart below shows overlapping times.

Schedule a phone call from ONT to CMH

If you are at ONT and you want to call a friend at CMH, you can try calling them between 4:00 AM and 8:00 PM your time. This will be between 7AM - 11PM their time, since Port Columbus International Airport is 3 hours ahead of LA/Ontario International Airport.

If you're available any time, but you want to reach someone in CMH at work, you may want to try between 6:00 AM and 2:00 PM your time. This is the best time to reach them from 9AM - 5PM during normal working hours.

Time difference

Travelmath provides an online time zone converter for places all over the world. You can enter airports, cities, states, countries, or zip codes to find the time difference between any two locations. The calculator will automatically adjust for daylight saving time (DST) in the summer. You can use it as a meeting planner or a scheduler to find the best time to make international phone calls. World time zones have a positive or negative offset computed from Coordinated Universal Time (UTC), or Greenwich Mean Time (GMT). UTC has uniform seconds defined by International Atomic Time (TAI), with leap seconds announced at irregular intervals to compensate for the Earth's slowing rotation. The tz database or zoneinfo database uses the closest city, rather than the more common Eastern, Central, Mountain or Pacific time zones in the United States. Countries often change their daylight saving rules, so please help us stay current by letting us know if you find any pages that need updates.