Cheap Flights from Port Columbus to Ontario International from $542

Compare Port Columbus to Ontario International flight deals

Find the cheapest month or even day of the year to fly to Ontario International

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Flight deals from Port Columbus to Ontario International

Looking for a cheap last-minute deal or the best return flight from Port Columbus to Ontario International? Find the lowest prices on one-way and return tickets right here.

Ontario.$542 per passenger.Departing Sat, 14 Feb, returning Wed, 18 Feb.Return flight with Southwest Airlines.Outbound indirect flight with Southwest Airlines, departs from Port Columbus on Sat, 14 Feb, arriving in Ontario International.Inbound indirect flight with Southwest Airlines, departs from Ontario International on Wed, 18 Feb, arriving in Port Columbus.Price includes taxes and charges.From $542, select.

Ontario.$568 per passenger.Departing Tue, 3 Mar, returning Tue, 10 Mar.Return flight with Southwest Airlines.Outbound indirect flight with Southwest Airlines, departs from Port Columbus on Tue, 3 Mar, arriving in Ontario International.Inbound indirect flight with Southwest Airlines, departs from Ontario International on Tue, 10 Mar, arriving in Port Columbus.Price includes taxes and charges.From $568, select.

Ontario.$587 per passenger.Departing Tue, 20 Jan, returning Tue, 27 Jan.Return flight with Southwest Airlines.Outbound indirect flight with Southwest Airlines, departs from Port Columbus on Tue, 20 Jan, arriving in Ontario International.Inbound indirect flight with Southwest Airlines, departs from Ontario International on Tue, 27 Jan, arriving in Port Columbus.Price includes taxes and charges.From $587, select.

Ontario.$604 per passenger.Departing Wed, 28 Jan, returning Mon, 2 Feb.Return flight with Southwest Airlines.Outbound indirect flight with Southwest Airlines, departs from Port Columbus on Wed, 28 Jan, arriving in Ontario International.Inbound indirect flight with Southwest Airlines, departs from Ontario International on Mon, 2 Feb, arriving in Port Columbus.Price includes taxes and charges.From $604, select.

Ontario.$606 per passenger.Departing Thu, 26 Feb, returning Thu, 5 Mar.Return flight with Southwest Airlines.Outbound indirect flight with Southwest Airlines, departs from Port Columbus on Thu, 26 Feb, arriving in Ontario International.Inbound indirect flight with Southwest Airlines, departs from Ontario International on Thu, 5 Mar, arriving in Port Columbus.Price includes taxes and charges.From $606, select.

Ontario.$747 per passenger.Departing Wed, 8 Jul, returning Wed, 15 Jul.Return flight with Southwest Airlines.Outbound indirect flight with Southwest Airlines, departs from Port Columbus on Wed, 8 Jul, arriving in Ontario International.Inbound indirect flight with Southwest Airlines, departs from Ontario International on Wed, 15 Jul, arriving in Port Columbus.Price includes taxes and charges.From $747, select.

Ontario.$754 per passenger.Departing Mon, 4 May, returning Fri, 8 May.Return flight with Southwest Airlines.Outbound indirect flight with Southwest Airlines, departs from Port Columbus on Mon, 4 May, arriving in Ontario International.Inbound indirect flight with Southwest Airlines, departs from Ontario International on Fri, 8 May, arriving in Port Columbus.Price includes taxes and charges.From $754, select.

Ontario.$755 per passenger.Departing Wed, 5 Aug, returning Fri, 21 Aug.Return flight with Southwest Airlines.Outbound indirect flight with Southwest Airlines, departs from Port Columbus on Wed, 5 Aug, arriving in Ontario International.Inbound indirect flight with Southwest Airlines, departs from Ontario International on Fri, 21 Aug, arriving in Port Columbus.Price includes taxes and charges.From $755, select.

Find the cheapest month to fly from Port Columbus to Ontario International

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Port Columbus to Ontario International flights are currently cheapest in February.

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Port Columbus to Ontario International: Alternative routes

Compare routes from Port Columbus to Ontario below. You may find an airport to fly into that's cheaper, faster, or easier than Ontario International.

Columbus to Ontario: Flight information

The things to know before you go.

Cheapest flight found	$542
Cheapest month to fly	February

Finding cheap flights from Port Columbus to Ontario International: Frequently asked questions

How much are return flights from Port Columbus to Ontario International?

The best price we found for a return flight from Port Columbus to Ontario International is $542. This is an estimate based on information collected from different airlines and travel providers over the last 4 days and is subject to change and availability.

Which airlines fly direct from Port Columbus to Ontario International?

Currently, there are no airlines that fly direct from Port Columbus to Ontario International. But we found flights with one or more stops from $542.

How many flights are there a week from Port Columbus to Ontario International?

As of December 2025, there are no flights flying from Port Columbus to Ontario International.

When is the cheapest time to fly from Port Columbus to Ontario International?

The cheapest month to fly from Port Columbus to Ontario International is usually February.

Which upcoming date is cheapest to fly from Port Columbus Airport to Ontario International Airport on?

After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from Port Columbus Airport to Ontario International Airport on Saturday, 14 February 2026.

Can I get a direct flight from Port Columbus Airport to Ontario International Airport?

No airlines currently offer direct flights between Port Columbus Airport and Ontario International Airport. Most routes have one or more stops.

How can I find the best flight deal to Ontario International?

We show every price from over 1,200 airlines and travel agents, comparing them all so you don’t have to. If you know you want to fly to Ontario International but you’re not ready to book, set up a Price Alert. We’ll track prices for you, and let you know when they rise or fall.

When is the best time to book flights to Ontario?

We crunched all the numbers in our flight calendar and it looks like the cheapest time to book a flight to Ontario is around 40 days in advance, so don’t leave your flight to the last minute.

Which is the cheapest airline to fly from Port Columbus Airport to Ontario International with?

Currently, Southwest Airlines offers the cheapest flight tickets to Ontario International.

Flying from John Glenn Columbus International Airport (CMH) to Ontario International Airport (ONT): what you need to know

Ontario's timezone is UTC-7, which makes Ontario three hours behind Columbus.
Arriving two hours before an international flight and one hour ahead of a domestic departure are golden rules for hassle-free flying. Show up at the airport on time to board your CMH to ONT flight.
Be prepared for bigger queues in popular months like July. Arriving up to four hours ahead of international flights and two hours for a domestic departure will give you ample time for security and boarding.
Think about adding a stopover when booking your ticket from John Glenn Columbus International Airport to Ontario International Airport. Just deselect 'Direct flights only' to break up your trip, or enjoy a detour to a new and interesting place. Here are some options between CMH and ONT:
- Phoenix Sky Harbour International Airport
- Denver International Airport
- Harry Reid Airport (formerly McCarran Airport)

How to find the cheapest flights from John Glenn Columbus International Airport (CMH) to Ontario International Airport (ONT)

$259 is currently the best price for a one-way John Glenn Columbus International Airport to Ontario International Airport flight. A return flight starts at $542. These prices may change depending on demand and availability.
It's often best to book early if you're looking for cheap tickets from CMH to ONT. That's because airlines adjust prices based on demand, which tends to rise closer to departure.
If you're willing to be flexible with your trip dates, use the 'Whole month' tool. It'll show you the cheapest price in every month when looking for a flight from John Glenn Columbus International Airport to Ontario International Airport.
There's no need to check back in every day to find out if fares have dropped when you create a Price Alert. We'll notify you the moment there's a better deal on cheap flights from CMH to ONT.
Tailor your trip using filters. Pick your ideal departure and arrival times, total journey duration and airlines. You can also sort your results by 'Best,' 'Fastest' or 'Cheapest' flights from John Glenn Columbus International Airport to Ontario International Airport.

Handy information about John Glenn Columbus International Airport (CMH)

CMH's address is 4600 International Gateway.
Of all flights leaving John Glenn Columbus International Airport, 79.5% arrive on time at their destination.
To reach John Glenn Columbus International Airport from central Columbus, it takes about 10 minutes by car. Of course, this depends on traffic. It's approximately 13 kilometres from the airport to the city centre.
Planning to take public transport? Expect a trip time of around 1 hour 5 minutes.
Looking for a handy hotel near CMH? If you've booked an early flight from John Glenn Columbus International Airport to Ontario International Airport, these accommodation options will put you moments from your departure lounge:

Arriving at Ontario International Airport (ONT)

The last thing you want is a long journey to your hotel if you're arriving on a late John Glenn Columbus International Airport to Ontario International Airport flight. Book one of these accommodation options near ONT instead:
Grab an Ontario International Airport rental car and explore Ontario and beyond with your own wheels. Dollar, Fox - Rent A Car and Thrifty are top providers you can book with here.
To get the lowest price, book your ride from Ontario International Airport about three weeks before you set off.

Getting from Ontario International Airport (ONT) to central Ontario

ONT is located at 2900 E. Airport Drive.
Ontario International Airport to the centre of Ontario has a drive time of about 10 minutes. It's approximately 6 kilometres away.
Travelling by public transport takes around 1 hour 30 minutes.

When to fly to Ontario International Airport (ONT)

It's time to choose your travel dates for your flight from John Glenn Columbus International Airport to Ontario International Airport. August is the busiest month to head to Ontario. If you're after a quieter vibe, go in May.
Before locking in your flight from John Glenn Columbus International Airport to Ontario International Airport, consider the type of weather you enjoy. August is the warmest month in Ontario, with temperatures ranging from 15ºC to 35ºC.
If you like travelling in cooler conditions, look for a cheap ticket from CMH to ONT in January. Temperatures average between 4ºC and 23ºC then.

Explore more of United States

Los Angeles is just one of the many cities in United States waiting to be discovered after you've seen Ontario. Around 56 kilometres away to the west, check out popular attractions including Griffith Observatory, The Broad and La Brea Tar Pits & Museum.
San Diego is another must-experience destination in United States and is around 153 kilometres south of Ontario. No trip is complete without a visit to San Diego Zoo, USS Midway Museum and SeaWorld San Diego.