Skyscanner home

229 € Cheap Flights from Charlotte Douglas to Ontario International

Return selected
Return selected
origin
Enter the city you're flying from, or choose from the options below
Include nearby airports
    selected
    destination
    . Enter your destination, or choose from the options below
    Include nearby airports
      selected
      Travellers and cabin class, 1 Adult, Economy
      American Airlines
      British Airways

      Compare Charlotte Douglas 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 Charlotte Douglas to Ontario International

      Looking for a cheap last-minute deal or the best return flight from Charlotte Douglas Airport to Ontario International Airport? If you want to travel next month, return fares start from 262 €. Find the lowest prices on one-way and return tickets right here.
      Ontario.229 € per passenger.Departing Sat, 31 Oct, returning Sat, 7 Nov.Return flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from Charlotte Douglas on Sat, 31 Oct, arriving in Ontario International.Inbound indirect flight with Frontier Airlines, departs from Ontario International on Sat, 7 Nov, arriving in Charlotte Douglas.Price includes taxes and charges.From 229 €, select.
      Ontario.257 € per passenger.Departing Thu, 5 Nov, returning Mon, 9 Nov.Return flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from Charlotte Douglas on Thu, 5 Nov, arriving in Ontario International.Inbound indirect flight with Frontier Airlines, departs from Ontario International on Mon, 9 Nov, arriving in Charlotte Douglas.Price includes taxes and charges.From 257 €, select.
      Ontario.262 € per passenger.Departing Sat, 17 Oct, returning Sat, 24 Oct.Return flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from Charlotte Douglas on Sat, 17 Oct, arriving in Ontario International.Inbound indirect flight with Frontier Airlines, departs from Ontario International on Sat, 24 Oct, arriving in Charlotte Douglas.Price includes taxes and charges.From 262 €, select.
      Ontario.269 € per passenger.Departing Tue, 17 Nov, returning Wed, 2 Dec.Return flight with Southwest Airlines.Outbound indirect flight with Southwest Airlines, departs from Charlotte Douglas on Tue, 17 Nov, arriving in Ontario International.Inbound indirect flight with Southwest Airlines, departs from Ontario International on Wed, 2 Dec, arriving in Charlotte Douglas.Price includes taxes and charges.From 269 €, select.
      Ontario.279 € per passenger.Departing Tue, 19 Jan, returning Tue, 26 Jan.Return flight with Delta.Outbound indirect flight with Delta, departs from Charlotte Douglas on Tue, 19 Jan, arriving in Ontario International.Inbound indirect flight with Delta, departs from Ontario International on Tue, 26 Jan, arriving in Charlotte Douglas.Price includes taxes and charges.From 279 €, select.
      Ontario.296 € per passenger.Departing Mon, 22 Feb, returning Wed, 24 Feb.Return flight with Southwest Airlines.Outbound indirect flight with Southwest Airlines, departs from Charlotte Douglas on Mon, 22 Feb, arriving in Ontario International.Inbound indirect flight with Southwest Airlines, departs from Ontario International on Wed, 24 Feb, arriving in Charlotte Douglas.Price includes taxes and charges.From 296 €, select.
      Ontario.310 € per passenger.Departing Sat, 30 Jan, returning Mon, 1 Feb.Return flight with Southwest Airlines.Outbound indirect flight with Southwest Airlines, departs from Charlotte Douglas on Sat, 30 Jan, arriving in Ontario International.Inbound indirect flight with Southwest Airlines, departs from Ontario International on Mon, 1 Feb, arriving in Charlotte Douglas.Price includes taxes and charges.From 310 €, select.
      Ontario.310 € per passenger.Departing Thu, 3 Dec, returning Mon, 7 Dec.Return flight with Southwest Airlines.Outbound indirect flight with Southwest Airlines, departs from Charlotte Douglas on Thu, 3 Dec, arriving in Ontario International.Inbound indirect flight with Southwest Airlines, departs from Ontario International on Mon, 7 Dec, arriving in Charlotte Douglas.Price includes taxes and charges.From 310 €, select.
      Ontario.315 € per passenger.Departing Wed, 16 Dec, returning Wed, 6 Jan.Return flight with Southwest Airlines.Outbound indirect flight with Southwest Airlines, departs from Charlotte Douglas on Wed, 16 Dec, arriving in Ontario International.Inbound indirect flight with Southwest Airlines, departs from Ontario International on Wed, 6 Jan, arriving in Charlotte Douglas.Price includes taxes and charges.From 315 €, select.
      Ontario.315 € per passenger.Departing Mon, 22 Feb, returning Mon, 1 Mar.Return flight with Southwest Airlines.Outbound indirect flight with Southwest Airlines, departs from Charlotte Douglas on Mon, 22 Feb, arriving in Ontario International.Inbound indirect flight with Southwest Airlines, departs from Ontario International on Mon, 1 Mar, arriving in Charlotte Douglas.Price includes taxes and charges.From 315 €, select.
      Ontario.333 € per passenger.Departing Wed, 30 Sep, returning Mon, 5 Oct.Return flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from Charlotte Douglas on Wed, 30 Sep, arriving in Ontario International.Inbound indirect flight with Frontier Airlines, departs from Ontario International on Mon, 5 Oct, arriving in Charlotte Douglas.Price includes taxes and charges.From 333 €, select.
      Ontario.359 € per passenger.Departing Wed, 11 Nov, returning Tue, 5 Jan.Return flight with Southwest Airlines.Outbound indirect flight with Southwest Airlines, departs from Charlotte Douglas on Wed, 11 Nov, arriving in Ontario International.Inbound indirect flight with Southwest Airlines, departs from Ontario International on Tue, 5 Jan, arriving in Charlotte Douglas.Price includes taxes and charges.From 359 €, select.
      Ontario.369 € per passenger.Departing Fri, 25 Sep, returning Sun, 27 Sep.Return flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from Charlotte Douglas on Fri, 25 Sep, arriving in Ontario International.Inbound indirect flight with Frontier Airlines, departs from Ontario International on Sun, 27 Sep, arriving in Charlotte Douglas.Price includes taxes and charges.From 369 €, select.
      Ontario.370 € per passenger.Departing Sun, 23 May, returning Sat, 29 May.Return flight with Southwest Airlines.Outbound indirect flight with Southwest Airlines, departs from Charlotte Douglas on Sun, 23 May, arriving in Ontario International.Inbound indirect flight with Southwest Airlines, departs from Ontario International on Sat, 29 May, arriving in Charlotte Douglas.Price includes taxes and charges.From 370 €, select.
      Ontario.404 € per passenger.Departing Tue, 16 Mar, returning Tue, 23 Mar.Return flight with Southwest Airlines.Outbound indirect flight with Southwest Airlines, departs from Charlotte Douglas on Tue, 16 Mar, arriving in Ontario International.Inbound indirect flight with Southwest Airlines, departs from Ontario International on Tue, 23 Mar, arriving in Charlotte Douglas.Price includes taxes and charges.From 404 €, select.
      Ontario.407 € per passenger.Departing Thu, 22 Apr, returning Sat, 24 Apr.Return flight with Southwest Airlines.Outbound indirect flight with Southwest Airlines, departs from Charlotte Douglas on Thu, 22 Apr, arriving in Ontario International.Inbound indirect flight with Southwest Airlines, departs from Ontario International on Sat, 24 Apr, arriving in Charlotte Douglas.Price includes taxes and charges.From 407 €, select.
      How did we find these deals? The deals you see here are the lowest prices for flight tickets from Charlotte Douglas to Ontario International found in the last 4 days, and are subject to change and availability.

      Find the cheapest month to fly from Charlotte Douglas to Ontario International

      We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Charlotte Douglas to Ontario International flights are currently cheapest in November.
      Sep
      from 369 €
      Oct
      from 262 €
      Nov
      from 257 €
      Dec
      from 310 €
      Jan
      from 279 €
      Feb
      from 296 €
      Mar
      from 404 €
      Apr
      from 407 €
      May
      from 370 €
      Jun
      from 509 €
      Jul
      Find prices
      Aug
      Find prices

      Direct flights from Charlotte Douglas to Ontario International

      American Airlines
      British Airways

      Charlotte Douglas to Ontario International: Alternative routes

      Compare routes from Charlotte Douglas 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
      ClosestCheapest
      from 229 €
      Search flights

      San Bernardino Norton AFB

      39km from central Ontario
      from 440 €
      Search flights

      Santa Ana John Wayne

      48km from central Ontario
      from 278 €
      Search flights

      Long Beach Municipal

      54km from central Ontario
      from 326 €
      Search flights

      Hawthorne

      65km from central Ontario
      Search flights

      Burbank

      67km from central Ontario
      from 231 €
      Search flights

      Los Angeles International

      71km from central Ontario
      Cheapest
      from 229 €
      Search flights

      Charlotte to Ontario: Flight information

      The things to know before you go.
      Cheapest flight found229 €
      Cheapest month to flyOctober
      Average flight time5 hrs, 13 mins
      Most popular airlineAmerican Airlines
      Average flights per week17

      Finding cheap flights from Charlotte Douglas to Ontario International: Frequently asked questions

      The best price we found for a return flight from Charlotte Douglas to Ontario International is 229 €. 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.
      5 hours and 13 minutes is the average flight time from Charlotte Douglas to Ontario International.
      American Airlines and British Airways fly direct from Charlotte Douglas to Ontario International.
      As of September 2026, there are 17 flights per week flying from Charlotte Douglas to Ontario International.
      The cheapest month to fly from Charlotte Douglas to Ontario International is usually October.
      After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from Charlotte Douglas Airport to Ontario International Airport on Saturday, 31 October 2026.
      Yes – the average flight time is 5 hours and 13 minutes.
      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 Charlotte Douglas Airport (CLT) to Ontario International Airport (ONT): what you need to know

      • The average time for a direct flight from Charlotte Douglas Airport to Ontario International Airport is 5 hours 10 minutes.

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

      • Take your pick of six weekly Charlotte Douglas Airport to Ontario International Airport flights. The 18:00 departure with American Airlines is the earliest available. American Airlines operates the last service of the day at 19:45.

      • To ensure you catch your CLT to ONT flight, leave enough time to navigate the airport and find your gate. Turning up two hours ahead of international departures and one hour before domestic flights is the standard rule.

      • During popular months like August, it's a good idea to get to the airport earlier. Arrive two hours before a domestic departure and four hours ahead of international flights when you fly during peak periods in general.

      • Getting to Ontario (and then discovering more of the United States!) is a cinch with American Airlines. This popular carrier offers direct flights from Charlotte Douglas Airport to Ontario International Airport.

      • American Airlines is the airline with the highest passenger demand for this route.

      • The most punctual carrier that offers CLT to ONT flights is American Airlines. Its services land without delay 77.27% of the time.

      • We make it easy to book a flight with a stopover. To see your options for tickets from Charlotte Douglas Airport to Ontario International Airport, deselect 'Direct flights only.' Then, pick a flight that has a stop long enough to tour the city of your choice. Some great stopovers between CLT and ONT include:

        • Atlanta Hartsfield-Jackson Airport

        • Phoenix Sky Harbour Airport

        • Harry Reid International Airport

      How to find the cheapest flights from Charlotte Douglas Airport (CLT) to Ontario International Airport (ONT)

      • 151 € is the best price for a one-way Charlotte Douglas Airport to Ontario International Airport flight. A return flight starts at 229 €. These fares can change based on availability.

      • Don't leave everything to the last moment. You're more likely to find cheap tickets from CLT to ONT if you book ahead. Airlines often offer some excellent early bird discounts.

      • May is the cheapest month for flights from Charlotte Douglas Airport to Ontario International Airport. If you'd like to fly during a different time of year, the 'Whole month' tool will give you the lowest airfares for every month.

      • Stay on top of deals for cheap flights from CLT to ONT by creating a Price Alert. We'll send you an email or notification on the app when a new low fare is offered.

      • Lock in the right flight for you with the help of the filters. To see the 'Fastest,' 'Cheapest' or 'Best' flights from Charlotte Douglas Airport to Ontario International Airport, use the 'Sort by' function. You can also filter by airline, departure and arrival times, and number of stops.

      Handy information about Charlotte Douglas Airport (CLT)

      • The address for CLT is 5501 Josh Birmingham Parkway.

      • 79% of flights that take off from Charlotte Douglas Airport arrive at their destination on schedule.

      • To get to Charlotte Douglas Airport from central Charlotte, it takes around 20 minutes if you're planning to drive. Of course, this depends on traffic conditions. It's approximately 13 kilometres from the airport to the city centre.

      • Planning to take public transport? Expect a trip time of around 35 minutes.

      • Have an early flight from Charlotte Douglas Airport to Ontario International Airport? Avoid rushing to the terminal (and sneak in some extra precious sleep) by choosing one of these stays close to CLT:

      Arriving at Ontario International Airport (ONT)

      When to fly to Ontario International Airport (ONT)

      • July is the busiest month for flights from Charlotte Douglas Airport to Ontario International Airport. To steer clear of the crowds, travel to Ontario in March.

      • Lock in your flight from Charlotte Douglas Airport to Ontario International Airport for August if you want to explore Ontario during its warmest month. Expect temperatures of between 16ºC (61ºF) and 36ºC (97ºF).

      • If you'd rather travel in cooler conditions, look for a cheap ticket from CLT to ONT in February. Temperatures average between 4ºC (39ºF) and 24ºC (75ºF) then.

      Explore more of the United States

      • Ontario has plenty going for it, but there are so many other parts of the United States waiting to be discovered. About 56 kilometres west of Ontario, a visit to Los Angeles will keep you on the go. Start with popular sights like Hollywood Sign, Universal Studios Hollywood and Hollywood Bowl.

      • If you're looking to explore another major stop in the United States, consider San Diego, roughly 153 kilometres south of Ontario. San Diego Zoo, San Diego Balboa Park and USS Midway Museum are key highlights.

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