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Cheap Flights from Cincinnati Northern Kentucky to Ontario International

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      Travellers and cabin class, 1 Adult, Economy

      Compare Cincinnati Northern Kentucky to Ontario International flight deals

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

      Book the best Ontario International fare with no extra fees

      Flight deals from Cincinnati Northern Kentucky to Ontario International

      Looking for a cheap last-minute deal or the best return flight from Cincinnati Northern Kentucky Airport to Ontario International Airport? If you want to travel next month, return fares start from Rs71,380. Find the lowest prices on one-way and return tickets right here.
      Ontario.Rs34,702 per passenger.Departing Sat, 24 Oct.One-way flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from Cincinnati Northern Kentucky on Sat, 24 Oct, arriving in Ontario International.Price includes taxes and charges.From Rs34,702, select.
      Ontario.Rs40,998 per passenger.Departing Sun, 1 Nov.One-way flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from Cincinnati Northern Kentucky on Sun, 1 Nov, arriving in Ontario International.Price includes taxes and charges.From Rs40,998, select.
      Ontario.Rs43,776 per passenger.Departing Sat, 5 Dec.One-way flight with Southwest Airlines.Outbound indirect flight with Southwest Airlines, departs from Cincinnati Northern Kentucky on Sat, 5 Dec, arriving in Ontario International.Price includes taxes and charges.From Rs43,776, select.
      Ontario.Rs66,091 per passenger.Departing Sat, 9 Jan.One-way flight with Southwest Airlines.Outbound indirect flight with Southwest Airlines, departs from Cincinnati Northern Kentucky on Sat, 9 Jan, arriving in Ontario International.Price includes taxes and charges.From Rs66,091, select.
      Ontario.Rs67,839 per passenger.Departing Tue, 30 Mar.One-way flight with Southwest Airlines.Outbound indirect flight with Southwest Airlines, departs from Cincinnati Northern Kentucky on Tue, 30 Mar, arriving in Ontario International.Price includes taxes and charges.From Rs67,839, select.
      Ontario.Rs68,020 per passenger.Departing Sun, 25 Apr.One-way flight with Southwest Airlines.Outbound indirect flight with Southwest Airlines, departs from Cincinnati Northern Kentucky on Sun, 25 Apr, arriving in Ontario International.Price includes taxes and charges.From Rs68,020, select.
      Ontario.Rs72,105 per passenger.Departing Tue, 29 Sep.One-way flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from Cincinnati Northern Kentucky on Tue, 29 Sep, arriving in Ontario International.Price includes taxes and charges.From Rs72,105, select.
      Ontario.Rs76,227 per passenger.Departing Fri, 28 May.One-way flight with Southwest Airlines.Outbound indirect flight with Southwest Airlines, departs from Cincinnati Northern Kentucky on Fri, 28 May, arriving in Ontario International.Price includes taxes and charges.From Rs76,227, select.
      How did we find these deals? The deals you see here are the lowest prices for flight tickets from Cincinnati Northern Kentucky to Ontario International found in the last 4 days, and are subject to change and availability.

      Find the cheapest month to fly from Cincinnati Northern Kentucky to Ontario International

      We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Cincinnati Northern Kentucky to Ontario International flights are currently cheapest in October.
      Sep
      from Rs72,105
      Oct
      from Rs34,702
      Nov
      from Rs40,998
      Dec
      from Rs43,776
      Jan
      from Rs66,091
      Feb
      Find prices
      Mar
      from Rs67,839
      Apr
      from Rs68,020
      May
      from Rs76,227
      Jun
      Find prices
      Jul
      Find prices
      Aug
      Find prices

      Cincinnati Northern Kentucky to Ontario International: Alternative routes

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

      Ontario International

      4km from central Ontario
      Closest
      from Rs34,702
      Search flights

      San Bernardino Norton AFB

      39km from central Ontario
      from Rs87,723
      Search flights

      Santa Ana John Wayne

      48km from central Ontario
      from Rs36,637
      Search flights

      Long Beach Municipal

      54km from central Ontario
      from Rs53,082
      Search flights

      Hawthorne

      65km from central Ontario
      from Rs213,905
      Search flights

      Burbank

      67km from central Ontario
      from Rs43,776
      Search flights

      Los Angeles International

      71km from central Ontario
      Cheapest
      from Rs28,701
      Search flights

      Cincinnati to Ontario: Flight information

      The things to know before you go.
      Cheapest flight foundRs34,702
      Cheapest month to flyOctober

      Finding cheap flights from Cincinnati Northern Kentucky to Ontario International: Frequently asked questions

      The best price we found for a return flight from Cincinnati Northern Kentucky to Ontario International is Rs71,380. 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.
      Currently, there are no airlines that fly direct from Cincinnati Northern Kentucky to Ontario International. But we found flights with one or more stops from Rs71,380.
      As of September 2026, there are no flights flying from Cincinnati Northern Kentucky to Ontario International.
      The cheapest month to fly from Cincinnati Northern Kentucky to Ontario International is usually October.
      After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from Cincinnati Northern Kentucky Airport to Ontario International Airport on Saturday, 24 October 2026.
      No airlines currently offer direct flights between Cincinnati Northern Kentucky Airport and Ontario International Airport. Most routes have one or more stops.
      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.

      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.

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

      Flying from Cincinnati Northern Kentucky Airport (CVG) to Ontario International Airport (ONT): what you need to know

      • The timezone in Ontario is UTC-8, which is three hours behind Cincinnati.

      • For a smooth journey, turn up at the airport two hours ahead of international flights and one hour before domestic departures. This will give you enough time to catch your CVG to ONT flight.

      • Flying during a peak time like July? Public holidays and other popular periods can mean longer queues and delays at airport checkpoints. Be extra cautious and get there up to four hours ahead of an international flight and two hours before domestic departures.

      • We make it a piece of cake to book a flight with a stopover. To see all your options for tickets from Cincinnati Northern Kentucky Airport to Ontario International Airport, uncheck 'Direct flights only.' Then, pick a flight offering a stop long enough to tour the city of your choice. Worthwhile stopovers between CVG and ONT include:

        • Denver International Airport

        • Phoenix Sky Harbour Airport

        • Harry Reid International Airport

      How to find the cheapest flights from Cincinnati Northern Kentucky Airport (CVG) to Ontario International Airport (ONT)

      • Currently, Rs34,702 is the lowest price we've seen for a one-way Cincinnati Northern Kentucky Airport to Ontario International Airport flight. The best price for a return plane ticket is Rs71,380. Bear in mind that fares may change due to demand at the time of booking.

      • To find cheap tickets from CVG to ONT, book in advance. Airlines typically offer lower prices when flights are first made available.

      • The 'Whole month' search tool shows you the cheapest flights from Cincinnati Northern Kentucky Airport to Ontario International Airport across each month. It's a good way to snap up a bargain if your travel plans aren't set in stone.

      • Never miss a deal on cheap flights from CVG to ONT by setting up a Price Alert. We'll send you an email or push notification on the app when a special offer becomes available.

      • Tailor your flights with filters. Choose your arrival and departure times, airlines and total journey duration. You can also sort results by 'Fastest,' 'Best' or 'Cheapest' flights from Cincinnati Northern Kentucky Airport to Ontario International Airport.

      Handy information about Cincinnati Northern Kentucky Airport (CVG)

      • Of the departures from Cincinnati Northern Kentucky Airport, 76% touch down on time at their destination.

      • Central Cincinnati to Cincinnati Northern Kentucky Airport is approximately 21 kilometres. Depending on traffic, it'll take you about 25 minutes to get there if you're driving, ride-sharing or catching a taxi.

      • Planning to catch public transport? Expect a trip time of around 1 hour.

      Arriving at Ontario International Airport (ONT)

      • If you're landing on a late Cincinnati Northern Kentucky Airport to Ontario International Airport flight, few things top the convenience of being close to the terminal. Grab your suitcases from the carousel and then be showered and sleeping shortly after at one of these accommodation options near ONT:

      • Grab a Ontario International Airport rental car and discover Ontario and beyond with your own set of wheels. Dollar, Fox - Rent A Car and Thrifty are popular providers to choose from here.

      • Lock in the best deal by reserving your vehicle from Ontario International Airport about three weeks ahead of your departure.

      When to fly to Ontario International Airport (ONT)

      • It's time to pick your trip dates for your flight from Cincinnati Northern Kentucky Airport to Ontario International Airport. July is the most popular month to head to Ontario. If you like a quieter vibe, go in March.

      • The warmest month in Ontario is August, with temperatures ranging between 16ºC and 36ºC. Lock in your flights from Cincinnati Northern Kentucky Airport to Ontario International Airport in this month if this is the type of weather you enjoy.

      • Search for cheap tickets from CVG to ONT in February if you like travelling in cooler conditions. Temperatures are at their lowest around then, ranging between 4ºC and 24ºC on average.

      Explore more of the United States

      • You've seen Ontario, now it's time to explore other parts of the United States. Journey about 56 kilometres west to Los Angeles to check off its top attractions. From Hollywood Sign to Universal Studios Hollywood and Hollywood Bowl, you'll have a packed itinerary ahead.

      • Around 153 kilometres south of Ontario, San Diego is another favourite stop in the United States. Experience major highlights starting with San Diego Zoo, San Diego Balboa Park and USS Midway Museum.

      Plan the rest of your trip from Cincinnati to Ontario

      Prices shown on this page are estimated lowest prices only. Found in the last 12 days.