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645 € Cheap Flights from Bangkok (BKKT) to Ontario International (ONT)

Your route at a glance

Cheapest deal645 €
Cheapest monthJanuary
Most popular airlineChina Airlines

Compare Bangkok 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 to Ontario International

Looking for a cheap last-minute deal or the best return flight from Bangkok to Ontario International? Find the lowest prices on one-way and return tickets right here.
Ontario.645 € per passenger.Departing Sat, 28 Mar, returning Mon, 30 Mar.Return flight with STARLUX Airlines.Outbound indirect flight with STARLUX Airlines, departs from Bangkok Suvarnabhumi on Sat, 28 Mar, arriving in Ontario International.Inbound indirect flight with STARLUX Airlines, departs from Ontario International on Mon, 30 Mar, arriving in Bangkok Suvarnabhumi.Price includes taxes and charges.From 645 €, select.
Ontario.645 € per passenger.Departing Fri, 23 Jan, returning Sat, 31 Jan.Return flight with STARLUX Airlines.Outbound indirect flight with STARLUX Airlines, departs from Bangkok Suvarnabhumi on Fri, 23 Jan, arriving in Ontario International.Inbound indirect flight with STARLUX Airlines, departs from Ontario International on Sat, 31 Jan, arriving in Bangkok Suvarnabhumi.Price includes taxes and charges.From 645 €, select.
Ontario.647 € per passenger.Departing Mon, 13 Apr, returning Fri, 24 Apr.Return flight with STARLUX Airlines.Outbound indirect flight with STARLUX Airlines, departs from Bangkok Suvarnabhumi on Mon, 13 Apr, arriving in Ontario International.Inbound indirect flight with STARLUX Airlines, departs from Ontario International on Fri, 24 Apr, arriving in Bangkok Suvarnabhumi.Price includes taxes and charges.From 647 €, select.
Ontario.648 € per passenger.Departing Fri, 1 May, returning Fri, 8 May.Return flight with STARLUX Airlines.Outbound indirect flight with STARLUX Airlines, departs from Bangkok Suvarnabhumi on Fri, 1 May, arriving in Ontario International.Inbound indirect flight with STARLUX Airlines, departs from Ontario International on Fri, 8 May, arriving in Bangkok Suvarnabhumi.Price includes taxes and charges.From 648 €, select.
Ontario.649 € per passenger.Departing Wed, 29 Apr, returning Mon, 4 May.Return flight with STARLUX Airlines.Outbound indirect flight with STARLUX Airlines, departs from Bangkok Suvarnabhumi on Wed, 29 Apr, arriving in Ontario International.Inbound indirect flight with STARLUX Airlines, departs from Ontario International on Mon, 4 May, arriving in Bangkok Suvarnabhumi.Price includes taxes and charges.From 649 €, select.
Ontario.651 € per passenger.Departing Thu, 8 Oct, returning Thu, 15 Oct.Return flight with China Airlines.Outbound indirect flight with China Airlines, departs from Bangkok Suvarnabhumi on Thu, 8 Oct, arriving in Ontario International.Inbound indirect flight with China Airlines, departs from Ontario International on Thu, 15 Oct, arriving in Bangkok Suvarnabhumi.Price includes taxes and charges.From 651 €, select.
Ontario.652 € per passenger.Departing Wed, 17 Jun, returning Wed, 18 Nov.Return flight with STARLUX Airlines.Outbound indirect flight with STARLUX Airlines, departs from Bangkok Suvarnabhumi on Wed, 17 Jun, arriving in Ontario International.Inbound indirect flight with STARLUX Airlines, departs from Ontario International on Wed, 18 Nov, arriving in Bangkok Suvarnabhumi.Price includes taxes and charges.From 652 €, select.
Ontario.652 € per passenger.Departing Fri, 30 Jan, returning Sat, 14 Feb.Return flight with STARLUX Airlines.Outbound indirect flight with STARLUX Airlines, departs from Bangkok Suvarnabhumi on Fri, 30 Jan, arriving in Ontario International.Inbound indirect flight with STARLUX Airlines, departs from Ontario International on Sat, 14 Feb, arriving in Bangkok Suvarnabhumi.Price includes taxes and charges.From 652 €, select.

Find the cheapest month to fly from Bangkok to Ontario International

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Bangkok to Ontario International flights are currently cheapest in January.
Dec
from 670 €
Jan
from 645 €
Feb
from 653 €
Mar
from 645 €
Apr
from 647 €
May
from 648 €
Jun
from 671 €
Jul
from 736 €
Aug
from 741 €
Sep
from 671 €
Oct
from 651 €
Nov
from 1.265 €

Bangkok to Ontario International: Alternative routes

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

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

The best price we found for a return flight from Bangkok to Ontario International is 645 €. 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 to Ontario International. But we found flights with one stop from 645 €.
As of December 2025, there are no flights flying from Bangkok to Ontario International.
The cheapest month to fly from Bangkok to Ontario International is usually January.
After crunching the numbers on our flight calendar, we found that it is currently cheapest to fly from Bangkok to Ontario International Airport on Friday, 23 January 2026.
No airlines currently offer direct flights between Bangkok and Ontario International Airport. Most routes have one or more stops.
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.
The cheapest airline that flies to Ontario International is STARLUX Airlines .

Travelling from Bangkok to Ontario International Airport (ONT): What you need to know

  • Get your holiday planning underway by working out where you'll catch your flight from Bangkok to Ontario International Airport (ONT). Suvarnabhumi Airport (BKK) and Don Mueang International Airport (DMK) are the two main airports in Bangkok.

  • Ontario International Airport is located in Ontario. The city operates on the UTC-7 timezone and is 14 hours behind Bangkok.

  • To ensure you catch your flight from Bangkok to ONT, allow plenty of time to navigate the airport and find your gate. Turning up two hours ahead of international departures and an hour before domestic flights is the general travel rule.

  • Heading off during a peak period like a bank holiday? Expect longer lines at check-in and security. For peace of mind, arrive up to four hours before international flights and two hours ahead of domestic departures.

Airports in Bangkok

Suvarnabhumi Airport (BKK)

  • Whether you'd like to explore a new place on the way or just have a break, we make it a breeze to find a flight with a stopover. To check out your options departing from Suvarnabhumi Airport (BKK), uncheck 'Direct flights only.' Taiwan Taoyuan International Airport (TPE) is a stop you can make when searching for cheap flights from Bangkok to ONT.

  • Located around 32 kilometres from the centre of Bangkok, BKK can be reached in about 35 minutes by car, depending on traffic. The journey by public transport will take roughly 1 hour 5 minutes.

  • Searching for a comfortable hotel close to Suvarnabhumi Airport? If you're catching an early flight from Bangkok to Ontario International Airport, these stays will have you sleeping moments from your check-in counter:

  • Of all flights departing from Suvarnabhumi Airport, 67.87% arrive as scheduled at their destination.

Don Mueang International Airport (DMK)

  • Get the most out of your holiday with a stopover on your flight from Bangkok to Ontario International Airport. Taiwan Taoyuan International Airport (TPE) is a great option between Don Mueang International Airport and ONT.

  • DMK is about 27 kilometres from central Bangkok. It'll take 30 minutes or so to get to the airport in a car from the city centre. Public transport takes approximately 1 hour 5 minutes.

  • Kick off your holiday early with an extra night away from home. Before your Bangkok to ONT flight, unwind in one of these hotels near Don Mueang International Airport:

  • 66.48% of all departures from Don Mueang International Airport arrive according to schedule.

About Ontario International Airport (ONT)

Getting from Ontario International Airport (ONT) to central Ontario

  • The centre of Ontario is around 5 kilometres from Ontario International Airport. Travel times by car hire or cab will vary depending on traffic conditions and time of day, so do a little research ahead of time.

  • When travelling on public transport, expect a journey of around 1 hour 30 minutes.

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

  • 312 € is currently the best price for a one-way ticket from Bangkok to Ontario International Airport. A return flight starts at 645 €. These fares may change based on demand and availability.

  • Don't leave everything to the last moment. You're more likely to find cheap flights from Bangkok to ONT if you book in advance. Airlines often offer some amazing early bird discounts.

  • If you have some flexibility with your trip dates, try using the 'Whole month' search tool. It'll show you the lowest price in every month when searching for your Bangkok to Ontario International Airport ticket.

  • Snapping up a cheap plane ticket from Bangkok to ONT is easy with Price Alerts. Simply set up one of these automatic alerts and we'll get in touch when a lower fare pops up.

  • Lock in a cheap flight from Bangkok to Ontario International Airport by using filters. Select your ideal times, number of stops and airlines, then sort the results by 'Cheapest' for the best deals.

The best time to fly from Bangkok to Ontario International Airport (ONT)

  • Think about the kind of holiday you want when picking your flight dates. May is the quietest month to go to Ontario. August is when most people book flights from Bangkok to Ontario International Airport (ONT), which may be ideal if you enjoy travelling when it's busier.

  • The warmest month in Ontario is August, with temperatures ranging between 15ºC (59ºF) and 35ºC (95ºF). Lock in your Bangkok to ONT plane ticket then if you enjoy this type of weather.

  • For cooler conditions, look for a cheap ticket from Bangkok to Ontario International Airport in January when temperatures are between 4ºC (39ºF) and 23ºC (73ºF).

More about Ontario

  • Once you've booked your flight from Bangkok to Ontario International Airport, find a hotel that's got location and comfort covered. Make one of these accommodation options your base for exploring Ontario:

  • Conservation Park and Citizens Business Bank Arena are just the start of the leading attractions to add to your Ontario travel itinerary. Keep the momentum going by heading to Scandia.

Explore more of the United States

  • You've visited Ontario, now it's time to discover other parts of the United States. Travel about 153 kilometres south to San Diego to tick off its leading attractions. From San Diego Zoo to San Diego Balboa Park and USS Midway Museum, you'll have a packed itinerary ahead.

  • If you're interested in discovering another well-known destination in the United States, head for Bakersfield, roughly 193 kilometres north-west of Ontario. Kern County Museum, Dr. Martin Luther King, Jr. Park and BAPS Shri Swaminarayan Mandir are among the biggest draws.

Prices shown on this page are estimated lowest prices only. Found in the last 45 days.