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Cheap Flights from Bangkok Suvarnabhumi to Ontario International

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      Travellers and cabin class, 1 Adult, Economy

      Compare Bangkok Suvarnabhumi 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 Bangkok Suvarnabhumi to Ontario International

      Looking for a cheap last-minute deal or the best return flight from Bangkok Suvarnabhumi Airport to Ontario International Airport? If you want to travel next month, return fares start from R 12,736. Find the lowest prices on one-way and return tickets right here.
      Ontario.R 7,356 per passenger.Departing Sun, 1 Nov.One-way flight with China Airlines.Outbound indirect flight with China Airlines, departs from Bangkok Suvarnabhumi on Sun, 1 Nov, arriving in Ontario International.Price includes taxes and charges.From R 7,356, select.
      Ontario.R 7,403 per passenger.Departing Wed, 21 Oct.One-way flight with China Airlines.Outbound indirect flight with China Airlines, departs from Bangkok Suvarnabhumi on Wed, 21 Oct, arriving in Ontario International.Price includes taxes and charges.From R 7,403, select.
      Ontario.R 7,543 per passenger.Departing Wed, 9 Dec.One-way flight with China Airlines.Outbound indirect flight with China Airlines, departs from Bangkok Suvarnabhumi on Wed, 9 Dec, arriving in Ontario International.Price includes taxes and charges.From R 7,543, select.
      Ontario.R 7,669 per passenger.Departing Fri, 23 Apr.One-way flight with China Airlines.Outbound indirect flight with China Airlines, departs from Bangkok Suvarnabhumi on Fri, 23 Apr, arriving in Ontario International.Price includes taxes and charges.From R 7,669, select.
      Ontario.R 7,720 per passenger.Departing Tue, 16 Feb.One-way flight with China Airlines.Outbound indirect flight with China Airlines, departs from Bangkok Suvarnabhumi on Tue, 16 Feb, arriving in Ontario International.Price includes taxes and charges.From R 7,720, select.
      Ontario.R 7,744 per passenger.Departing Sat, 29 May.One-way flight with China Airlines.Outbound indirect flight with China Airlines, departs from Bangkok Suvarnabhumi on Sat, 29 May, arriving in Ontario International.Price includes taxes and charges.From R 7,744, select.
      Ontario.R 7,746 per passenger.Departing Sun, 7 Mar.One-way flight with China Airlines.Outbound indirect flight with China Airlines, departs from Bangkok Suvarnabhumi on Sun, 7 Mar, arriving in Ontario International.Price includes taxes and charges.From R 7,746, select.
      Ontario.R 7,763 per passenger.Departing Fri, 29 Jan.One-way flight with China Airlines.Outbound indirect flight with China Airlines, departs from Bangkok Suvarnabhumi on Fri, 29 Jan, arriving in Ontario International.Price includes taxes and charges.From R 7,763, select.
      Ontario.R 7,799 per passenger.Departing Thu, 10 Sep.One-way flight with STARLUX Airlines.Outbound indirect flight with STARLUX Airlines, departs from Bangkok Suvarnabhumi on Thu, 10 Sep, arriving in Ontario International.Price includes taxes and charges.From R 7,799, select.
      Ontario.R 9,064 per passenger.Departing Sat, 12 Jun.One-way flight with China Airlines.Outbound indirect flight with China Airlines, departs from Bangkok Suvarnabhumi on Sat, 12 Jun, arriving in Ontario International.Price includes taxes and charges.From R 9,064, select.
      Ontario.R 10,568 per passenger.Departing Mon, 12 Jul.One-way flight with China Airlines.Outbound indirect flight with China Airlines, departs from Bangkok Suvarnabhumi on Mon, 12 Jul, arriving in Ontario International.Price includes taxes and charges.From R 10,568, select.
      Ontario.R 10,568 per passenger.Departing Thu, 12 Aug.One-way flight with China Airlines.Outbound indirect flight with China Airlines, departs from Bangkok Suvarnabhumi on Thu, 12 Aug, arriving in Ontario International.Price includes taxes and charges.From R 10,568, select.

      Find the cheapest month to fly from Bangkok Suvarnabhumi to Ontario International

      We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Bangkok Suvarnabhumi to Ontario International flights are currently cheapest in November.
      Sep
      from R 7,799
      Oct
      from R 7,403
      Nov
      from R 7,356
      Dec
      from R 7,543
      Jan
      from R 7,763
      Feb
      from R 7,720
      Mar
      from R 7,746
      Apr
      from R 7,669
      May
      from R 7,744
      Jun
      from R 9,064
      Jul
      from R 10,568
      Aug
      from R 10,568

      Bangkok Suvarnabhumi to Ontario International: Alternative routes

      Compare routes from Bangkok Suvarnabhumi 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 R 7,356
      Search flights

      San Bernardino Norton AFB

      39km from central Ontario
      from R 8,785
      Search flights

      Santa Ana John Wayne

      48km from central Ontario
      from R 7,969
      Search flights

      Long Beach Municipal

      54km from central Ontario
      from R 8,714
      Search flights

      Hawthorne

      65km from central Ontario
      Search flights

      Burbank

      67km from central Ontario
      from R 9,238
      Search flights

      Los Angeles International

      71km from central Ontario
      Cheapest
      from R 5,641
      Search flights

      Bangkok to Ontario: Flight information

      The things to know before you go.
      Cheapest flight foundR 7,356
      Cheapest month to flyNovember

      Finding cheap flights from Bangkok Suvarnabhumi to Ontario International: Frequently asked questions

      The best price we found for a return flight from Bangkok Suvarnabhumi to Ontario International is R 12,736. 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 Bangkok Suvarnabhumi to Ontario International. But we found flights with one or more stops from R 12,736.
      As of September 2026, there are no flights flying from Bangkok Suvarnabhumi to Ontario International.
      The cheapest month to fly from Bangkok Suvarnabhumi to Ontario International is usually October.
      After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from Bangkok Suvarnabhumi Airport to Ontario International Airport on Monday, 12 October 2026.
      No airlines currently offer direct flights between Bangkok Suvarnabhumi 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, STARLUX Airlines offers the cheapest flight tickets to Ontario International.

      Travelling from Bangkok Suvarnabhumi Airport (BKK) to Ontario International Airport (ONT): what you need to know

      • Ontario is 15 hours behind Bangkok and follows the UTC-8 timezone.

      • Your BKK to ONT flight won't wait if you're late, so show up at the airport on time. Arrive up to one hour in advance for domestic flights and two hours ahead when you're travelling internationally.

      • You'll likely experience bigger queues during popular months such as January. Arriving up to four hours ahead of an international flight and two hours for domestic departures is a good idea.

      • Enjoy a quick visit to another city or simply break up your journey with a stopover. Just deselect 'Direct flights only' to see your options when searching for tickets from Bangkok Suvarnabhumi Airport to Ontario International Airport. Many passengers pass through Taipei Taiwan Taoyuan Airport when flying between BKK and ONT.

      How to find the cheapest flights from Bangkok Suvarnabhumi Airport (BKK) to Ontario International Airport (ONT)

      • R 7,356 is currently the lowest price for a one-way Bangkok Suvarnabhumi Airport to Ontario International Airport flight. Return flights start from R 12,736. These fares can change depending on availability and demand.

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

      • If you're willing to be flexible with your travel dates, try using the 'Whole month' search tool. It'll show you the lowest price across each month when looking for your flight from Bangkok Suvarnabhumi Airport to Ontario International Airport.

      • There's no need to check back in every day to find out if fares have gone down when you set up a Price Alert. We'll notify you as soon as there's a change in price on cheap flights from BKK to ONT.

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

      Handy information about Bangkok Suvarnabhumi Airport (BKK)

      • 74% of flights leaving from Bangkok Suvarnabhumi Airport touch down at their destination on time.

      • To get to Bangkok Suvarnabhumi Airport from central Bangkok, it takes about 35 minutes if you're planning to drive. This depends on traffic, however. It's approximately 31 kilometres from the airport to the city centre.

      • Planning to catch public transport? Expect a journey time of around 35 minutes.

      • Searching for a handy hotel near BKK? If you're catching an early flight from Bangkok Suvarnabhumi Airport to Ontario International Airport, these accommodation options will have you moments from check-in:

      Arriving at Ontario International Airport (ONT)

      When to fly to Ontario International Airport (ONT)

      • The quietest month for a flight from Bangkok Suvarnabhumi Airport to Ontario International Airport is March, while July is the busiest. Choose the ideal time to go to Ontario based on whether you prefer a more relaxed vibe or a faster pace.

      • The warmest month in Ontario is August, with temperatures ranging between 16ºC (61ºF) and 36ºC (97ºF). Book your flights from Bangkok Suvarnabhumi Airport to Ontario International Airport in this month if this is the type of weather you enjoy.

      • Look for cheap tickets from BKK to ONT in February if you'd rather travel during cooler conditions. Temperatures are at their lowest then, ranging between 4ºC (39ºF) and 24ºC (75ºF) on average.

      Explore more of the United States

      • You've visited 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 leading sights. From Hollywood Sign to Universal Studios Hollywood and Hollywood Bowl, you've got a jam-packed schedule ahead.

      • Around 153 kilometres south of Ontario, San Diego is another essential stop in the United States. Experience this destination's highlights firsthand at San Diego Zoo, San Diego Balboa Park and USS Midway Museum.

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