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Cheap Flights from Ontario (ONT) to Athens (ATH)

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      Travellers and cabin class, 1 Adult, Economy

      Compare Ontario International to Athens International flight deals

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

      Book the best Athens International fare with no extra fees

      Flight deals from Ontario International to Athens International

      Looking for a cheap last-minute deal or the best return flight from Ontario International Airport to Athens International Airport? If you want to travel next month, return fares start from $1,196. Find the lowest prices on one-way and return tickets right here.
      Athens.$1,146 per passenger.Departing Wed, 21 Apr, returning Wed, 5 May.Return flight with Air France and KLM.Outbound indirect flight with Air France, departs from Ontario International on Wed, 21 Apr, arriving in Athens International.Inbound indirect flight with KLM, departs from Athens International on Wed, 5 May, arriving in Ontario International.Price includes taxes and charges.From $1,146, select.
      Athens.$1,196 per passenger.Departing Mon, 19 Oct, returning Tue, 27 Oct.Return flight with Delta.Outbound indirect flight with Delta, departs from Ontario International on Mon, 19 Oct, arriving in Athens International.Inbound indirect flight with Delta, departs from Athens International on Tue, 27 Oct, arriving in Ontario International.Price includes taxes and charges.From $1,196, select.
      Athens.$1,297 per passenger.Departing Thu, 28 Jan, returning Thu, 4 Feb.Return flight with British Airways.Outbound indirect flight with British Airways, departs from Ontario International on Thu, 28 Jan, arriving in Athens International.Inbound indirect flight with British Airways, departs from Athens International on Thu, 4 Feb, arriving in Ontario International.Price includes taxes and charges.From $1,297, select.
      Athens.$1,321 per passenger.Departing Thu, 4 Feb, returning Thu, 18 Feb.Return flight with British Airways.Outbound indirect flight with British Airways, departs from Ontario International on Thu, 4 Feb, arriving in Athens International.Inbound indirect flight with British Airways, departs from Athens International on Thu, 18 Feb, arriving in Ontario International.Price includes taxes and charges.From $1,321, select.
      Athens.$1,448 per passenger.Departing Mon, 8 Mar, returning Mon, 15 Mar.Return flight with British Airways.Outbound indirect flight with British Airways, departs from Ontario International on Mon, 8 Mar, arriving in Athens International.Inbound indirect flight with British Airways, departs from Athens International on Mon, 15 Mar, arriving in Ontario International.Price includes taxes and charges.From $1,448, select.
      Athens.$1,548 per passenger.Departing Fri, 15 Jan, returning Fri, 22 Jan.Return flight with British Airways.Outbound indirect flight with British Airways, departs from Ontario International on Fri, 15 Jan, arriving in Athens International.Inbound indirect flight with British Airways, departs from Athens International on Fri, 22 Jan, arriving in Ontario International.Price includes taxes and charges.From $1,548, select.
      Athens.$1,550 per passenger.Departing Mon, 23 Nov, returning Mon, 30 Nov.Return flight with Delta.Outbound indirect flight with Delta, departs from Ontario International on Mon, 23 Nov, arriving in Athens International.Inbound indirect flight with Delta, departs from Athens International on Mon, 30 Nov, arriving in Ontario International.Price includes taxes and charges.From $1,550, select.
      Athens.$1,594 per passenger.Departing Fri, 16 Jul, returning Wed, 28 Jul.Return flight with British Airways.Outbound indirect flight with British Airways, departs from Ontario International on Fri, 16 Jul, arriving in Athens International.Inbound indirect flight with British Airways, departs from Athens International on Wed, 28 Jul, arriving in Ontario International.Price includes taxes and charges.From $1,594, select.
      Athens.$1,794 per passenger.Departing Thu, 22 Jul, returning Sun, 1 Aug.Return flight with British Airways.Outbound indirect flight with British Airways, departs from Ontario International on Thu, 22 Jul, arriving in Athens International.Inbound indirect flight with British Airways, departs from Athens International on Sun, 1 Aug, arriving in Ontario International.Price includes taxes and charges.From $1,794, select.
      Athens.$1,888 per passenger.Departing Sat, 29 May, returning Sat, 12 Jun.Return flight with Condor.Outbound indirect flight with Condor, departs from Ontario International on Sat, 29 May, arriving in Athens International.Inbound indirect flight with Condor, departs from Athens International on Sat, 12 Jun, arriving in Ontario International.Price includes taxes and charges.From $1,888, select.
      Athens.$1,959 per passenger.Departing Sat, 26 Dec, returning Fri, 8 Jan.Return flight with British Airways.Outbound indirect flight with British Airways, departs from Ontario International on Sat, 26 Dec, arriving in Athens International.Inbound indirect flight with British Airways, departs from Athens International on Fri, 8 Jan, arriving in Ontario International.Price includes taxes and charges.From $1,959, select.
      Athens.$1,986 per passenger.Departing Sun, 6 Jun, returning Sun, 13 Jun.Return flight with British Airways.Outbound indirect flight with British Airways, departs from Ontario International on Sun, 6 Jun, arriving in Athens International.Inbound indirect flight with British Airways, departs from Athens International on Sun, 13 Jun, arriving in Ontario International.Price includes taxes and charges.From $1,986, select.
      Athens.$2,033 per passenger.Departing Mon, 28 Sep, returning Tue, 6 Oct.Return flight with Turkish Airlines.Outbound indirect flight with Turkish Airlines, departs from Ontario International on Mon, 28 Sep, arriving in Athens International.Inbound indirect flight with Turkish Airlines, departs from Athens International on Tue, 6 Oct, arriving in Ontario International.Price includes taxes and charges.From $2,033, select.
      Athens.$2,130 per passenger.Departing Sat, 15 May, returning Mon, 24 May.Return flight with Turkish Airlines.Outbound indirect flight with Turkish Airlines, departs from Ontario International on Sat, 15 May, arriving in Athens International.Inbound indirect flight with Turkish Airlines, departs from Athens International on Mon, 24 May, arriving in Ontario International.Price includes taxes and charges.From $2,130, select.
      Athens.$2,182 per passenger.Departing Sat, 26 Jun, returning Sun, 11 Jul.Return flight with British Airways.Outbound indirect flight with British Airways, departs from Ontario International on Sat, 26 Jun, arriving in Athens International.Inbound indirect flight with British Airways, departs from Athens International on Sun, 11 Jul, arriving in Ontario International.Price includes taxes and charges.From $2,182, select.
      Athens.$2,528 per passenger.Departing Sun, 20 Sep, returning Mon, 28 Sep.Return flight with Turkish Airlines.Outbound indirect flight with Turkish Airlines, departs from Ontario International on Sun, 20 Sep, arriving in Athens International.Inbound indirect flight with Turkish Airlines, departs from Athens International on Mon, 28 Sep, arriving in Ontario International.Price includes taxes and charges.From $2,528, select.

      Find the cheapest month to fly from Ontario International to Athens International

      We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Ontario International to Athens International flights are currently cheapest in October.
      Sep
      from $2,528
      Oct
      from $1,196
      Nov
      from $1,550
      Dec
      Find prices
      Jan
      from $1,548
      Feb
      from $1,321
      Mar
      from $1,448
      Apr
      Find prices
      May
      from $2,130
      Jun
      from $1,986
      Jul
      from $1,594
      Aug
      Find prices

      Ontario International to Athens International: Alternative routes

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

      Athens International

      20km from central Athens
      ClosestCheapest
      from $1,146
      Search flights

      Ontario to Athens: Flight information

      The things to know before you go.
      Cheapest flight found$1,146
      Cheapest month to flyApril

      Finding cheap flights from Ontario International to Athens International: Frequently asked questions

      The best price we found for a return flight from Ontario International to Athens International is $1,146. 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 Ontario International to Athens International. But we found flights with one or more stops from $1,146.
      As of September 2026, there are no flights flying from Ontario International to Athens International.
      The cheapest month to fly from Ontario International to Athens International is usually April.
      After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from Ontario International Airport to Athens International Airport on Wednesday, 21 April 2027.
      No airlines currently offer direct flights between Ontario International Airport and Athens 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 Athens 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 Athens is around 40 days in advance, so don’t leave your flight to the last minute.

      Currently, Air France offers the cheapest flight tickets to Athens International.

      Flying from Ontario International Airport (ONT) to Athens International Airport (ATH): what you need to know

      • The timezone in Athens is UTC+2, which is ten hours ahead of Ontario.

      • Arrive at the airport on time so you don't miss your ONT to ATH flight. Be there at least two hours ahead for international flights and an hour early for domestic departures to avoid any last-minute rush.

      • During popular months like July, you'll want to get to the airport earlier than normal. Plan to arrive two hours before a domestic departure and four hours ahead of international flights whenever you're travelling during peak periods in general.

      • Pick a stopover if you prefer to break up your flight. Just deselect 'Direct flights only' to see your options for tickets from Ontario International Airport to Athens International Airport. Atlanta Hartsfield-Jackson Airport is a top stopover on the ONT to ATH route.

      How to find the cheapest flights from Ontario International Airport (ONT) to Athens International Airport (ATH)

      • At the moment, $522 is the cheapest price we've seen for a one-way Ontario International Airport to Athens International Airport flight. The best price for a return plane ticket is $1,146. Bear in mind that fares may change due to demand when booking.

      • It's a good idea to book in advance if you're hoping to get cheap tickets from ONT to ATH. That's because flight prices are based on demand, which tends to increase closer to departure.

      • Getting cheap flights from Ontario International Airport to Athens International Airport is more likely if you're flexible with your dates. Use the 'Whole month' function to see the best prices across the month and snap up a great deal.

      • Never miss a deal on cheap flights from ONT to ATH by setting up a Price Alert. You'll get an email or notification on the app when a new discounted fare appears.

      • Pick your preferred arrival and departure times, number of stops and airlines with the filters. Or sort your results by 'Cheapest' to see the best deals on flights from Ontario International Airport to Athens International Airport.

      Handy information about Ontario International Airport (ONT)

      • You'll find ONT at 2900 E. Airport Drive.

      • 83% of flights departing from Ontario International Airport land at their destination on time. With its dependable on-time performance, disruptions are unlikely when flying out of ONT.

      • Central Ontario to Ontario International Airport is around 10 kilometres. Depending on traffic, it'll take about 15 minutes to get there if you're catching a taxi, ride-sharing or driving.

      • Expect a journey time of roughly 45 minutes on public transport.

      • Taking an early flight from Ontario International Airport to Athens International Airport? Avoid the stress of rushing to the terminal (and enjoy a little extra shut-eye) by choosing one of these hotels near ONT:

      Arriving at Athens International Airport (ATH)

      • If you have a late Ontario International Airport to Athens International Airport flight, nothing beats the convenience of being near the terminal. Grab your luggage from the carousel and then be showered and relaxing soon after at one of these options near ATH:

      • Pick up a Athens International Airport rental car and discover Athens and beyond with your own wheels. Centauro, Green Motion and Surprice are leading providers to choose from here.

      • Booking your vehicle from Athens International Airport about three weeks in advance boosts your odds of scoring a great price.

      Getting from Athens International Airport (ATH) to central Athens

      • From Athens International Airport, Athens is approximately 32 kilometres away. It takes around 35 minutes to get to the centre driving.

      • If you're using public transport, expect a journey of around 40 minutes.

      When to fly to Athens International Airport (ATH)

      • The quietest month for a flight from Ontario International Airport to Athens International Airport is March, while August is the most popular. Pick the best time to visit Athens based on whether you prefer a laid-back vibe or a more bustling atmosphere.

      • When reserving your flight from Ontario International Airport to Athens International Airport, think about the kind of weather you like. July is the warmest month in Athens, with the temperature ranging from 22ºC (72ºF) to 37ºC (99ºF).

      • January has average temperatures of between 4ºC (39ºF) and 14ºC (57ºF). Look for cheap tickets from ONT to ATH sometime around then if you want to travel when it's cooler.

      Explore more of Greece

      • Thessaloniki is just one of the many places in Greece waiting to be explored after you've experienced Athens. Around 306 kilometres away to the north, well-known attractions include Church of Agia Sofia, Archaeological Museum of Thessaloniki and Alexander the Great Statue.

      • If you're ready to explore another corner of Greece, consider Larisa, about 209 kilometres north-west of Athens. Larissa Ancient Ruins, Municipal Art Gallery of Larissa and The Church Of St. George are among its highlights.

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