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Cheap Flights from Ontario International to Bangkok

Compare Ontario International to Bangkok flight deals

Find the cheapest month or even day of the year to fly to Bangkok

Book the best Bangkok fare with no extra fees

Flight deals from Ontario International to Bangkok

Looking for a cheap last-minute deal or the best return flight from Ontario International Airport to Bangkok? If you want to travel next month, return fares start from R 14,015. Find the lowest prices on one-way and return tickets right here.
Bangkok.R 6,804 per passenger.Departing Tue, 4 Aug.One-way flight with Korean Air.Outbound indirect flight with Korean Air, departs from Ontario International on Tue, 4 Aug, arriving in Bangkok Suvarnabhumi.Price includes taxes and charges.From R 6,804, select.
Bangkok.R 7,099 per passenger.Departing Sun, 22 Nov.One-way flight with Korean Air.Outbound indirect flight with Korean Air, departs from Ontario International on Sun, 22 Nov, arriving in Bangkok Suvarnabhumi.Price includes taxes and charges.From R 7,099, select.
Bangkok.R 7,156 per passenger.Departing Fri, 30 Oct.One-way flight with Korean Air.Outbound indirect flight with Korean Air, departs from Ontario International on Fri, 30 Oct, arriving in Bangkok Suvarnabhumi.Price includes taxes and charges.From R 7,156, select.
Bangkok.R 7,202 per passenger.Departing Mon, 20 Jul.One-way flight with Korean Air.Outbound indirect flight with Korean Air, departs from Ontario International on Mon, 20 Jul, arriving in Bangkok Suvarnabhumi.Price includes taxes and charges.From R 7,202, select.
Bangkok.R 7,332 per passenger.Departing Fri, 18 Sep.One-way flight with Korean Air.Outbound indirect flight with Korean Air, departs from Ontario International on Fri, 18 Sep, arriving in Bangkok Suvarnabhumi.Price includes taxes and charges.From R 7,332, select.
Bangkok.R 7,452 per passenger.Departing Thu, 4 Mar.One-way flight with Korean Air.Outbound indirect flight with Korean Air, departs from Ontario International on Thu, 4 Mar, arriving in Bangkok Suvarnabhumi.Price includes taxes and charges.From R 7,452, select.
Bangkok.R 7,462 per passenger.Departing Sat, 30 Jan.One-way flight with Korean Air.Outbound indirect flight with Korean Air, departs from Ontario International on Sat, 30 Jan, arriving in Bangkok Suvarnabhumi.Price includes taxes and charges.From R 7,462, select.
Bangkok.R 7,474 per passenger.Departing Thu, 18 Feb.One-way flight with Korean Air.Outbound indirect flight with Korean Air, departs from Ontario International on Thu, 18 Feb, arriving in Bangkok Suvarnabhumi.Price includes taxes and charges.From R 7,474, select.
Bangkok.R 7,502 per passenger.Departing Tue, 1 Dec.One-way flight with Korean Air.Outbound indirect flight with Korean Air, departs from Ontario International on Tue, 1 Dec, arriving in Bangkok Suvarnabhumi.Price includes taxes and charges.From R 7,502, select.
Bangkok.R 9,178 per passenger.Departing Mon, 12 Apr.One-way flight with Korean Air.Outbound indirect flight with Korean Air, departs from Ontario International on Mon, 12 Apr, arriving in Bangkok Suvarnabhumi.Price includes taxes and charges.From R 9,178, select.
Bangkok.R 9,780 per passenger.Departing Wed, 19 May.One-way flight with STARLUX Airlines.Outbound indirect flight with STARLUX Airlines, departs from Ontario International on Wed, 19 May, arriving in Bangkok Suvarnabhumi.Price includes taxes and charges.From R 9,780, select.
Bangkok.R 9,889 per passenger.Departing Sun, 28 Jun.One-way flight with Korean Air.Outbound indirect flight with Korean Air, departs from Ontario International on Sun, 28 Jun, arriving in Bangkok Suvarnabhumi.Price includes taxes and charges.From R 9,889, select.

Find the cheapest month to fly from Ontario International to Bangkok

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Ontario International to Bangkok flights are currently cheapest in August.
Jun
from R 9,889
Jul
from R 7,202
Aug
from R 6,804
Sep
from R 7,332
Oct
from R 7,156
Nov
from R 7,099
Dec
from R 7,502
Jan
from R 7,462
Feb
from R 7,474
Mar
from R 7,452
Apr
from R 9,178
May
from R 9,780

Alternative Ontario International to Bangkok routes

Looking for the cheapest, fastest or easiest route from Ontario International to Bangkok? You could fly into the following airports instead.

Don Mueang

21km from central Bangkok
Closest
from R 8,761
Search flights

Bangkok Suvarnabhumi

29km from central Bangkok
Cheapest
from R 6,804
Search flights

Ontario to Bangkok: Flight information

The things to know before you go.
Cheapest flight foundR 6,804
Cheapest month to flyAugust

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

There are 2 airports in Bangkok: Don Mueang and Bangkok Suvarnabhumi.
The best price we found for a return flight from Ontario International to Bangkok is R 13,776. 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 Bangkok. But we found flights with one or more stops from R 13,776.
As of June 2026, there are no flights flying from Ontario International to Bangkok.
The cheapest month to fly from Ontario International to Bangkok is usually October.
If you're flying from Ontario International Airport, the cheapest airport near Bangkok is Bangkok Suvarnabhumi – which is 28.5 km away from the centre of Bangkok. We've found flights into this airport from R 13,776.
After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from Ontario International Airport to Bangkok on Tuesday, 20 October 2026.
No airlines currently offer direct flights between Ontario International Airport and Bangkok. 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 Bangkok 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 Bangkok is around 40 days in advance, so don’t leave your flight to the last minute.
In June, the average temperature is usually around 29°C. April is typically the warmest month in Bangkok, when it usually averages around 35°C. You can expect the least rain in December. The coldest month is November, with temperatures averaging 22°C. The rainiest month is September.
Currently, Korean Air offers the cheapest flight tickets to Bangkok.

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

  • The timezone in Bangkok is UTC+7. The city is 15 hours ahead of Ontario, where Ontario International Airport is located.

  • To avoid rushing for your ONT to Bangkok flight, leave plenty of time to navigate the airport and find your gate. Turning up two hours before international departures and one hour before domestic flights is the standard rule.

  • Flying over a peak time like July? Major public holidays and other popular seasons can lead to longer lines and delays at security. Play it safe and get there up to four hours ahead of an international flight and two hours before domestic departures.

  • Finding a plane ticket from ONT to Bangkok with a stopover is simple. Whether you'd like to potentially save cash on your fare or explore an exciting new destination, just deselect 'Direct flights only' to see your options. A popular stop is Taiwan Taoyuan International Airport (TPE).

  • Located around 5 kilometres from central Ontario, ONT can be reached in about 15 minutes by car. The journey on public transport takes roughly 45 minutes.

  • Want a relaxed start to your travels? Stay near ONT. Whether you're taking an early flight from Ontario International Airport to Bangkok or want to avoid feeling rushed, these hotels are a convenient choice:

  • Ontario International Airport gets top marks for on-time performance. 83% of flights that depart ONT arrive at their destination as scheduled.

  • ONT is located at 2900 E. Airport Drive.

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

  • The best price we've seen for a one-way Ontario International Airport to Bangkok flight is R 6,804. The cheapest price for a return flight is R 13,710. Keep in mind fares may change due to availability at the time of booking.

  • To find cheap flights from ONT to Bangkok, book ahead. Airlines tend to offer lower fares when tickets first go on sale.

  • Scoring cheap tickets from Ontario International Airport to Bangkok is easier if you can be flexible with your travel plans. Try using the 'Whole month' search tool to get the lowest prices throughout the month and walk away with an awesome deal.

  • You don't need to check in daily to find out if fares have dropped when you set up a Price Alert. We'll update you the moment there's an updated deal for cheap flights from ONT to Bangkok.

  • Find a cheap flight from Ontario International Airport to Bangkok with the help of our filters. Choose your ideal times, airlines and number of stops, then sort the results by 'Cheapest' for the best deals.

Airports in Bangkok

Bangkok Suvarnabhumi International Airport (BKK)

  • Bangkok Suvarnabhumi International Airport (BKK) to the centre of Bangkok takes around 35 minutes by car. The centre is roughly 31 kilometres away.

  • It'll take around 35 minutes if you're travelling by public transport.

  • If you have a late flight from Ontario International Airport to Bangkok, few things beat the convenience of staying near the terminal. Grab your bags from the carousel and then be showered and relaxing not long after at one of these hotels near BKK:

  • Reserving your vehicle from Bangkok Suvarnabhumi International Airport about four weeks ahead of your flight from ONT to Bangkok can help you lock in the best possible rate.

Bangkok Don Mueang International Airport (DMK)

  • Bangkok Don Mueang International Airport (DMK) is roughly 24 kilometres from central Bangkok. Once you've disembarked your flight from Ontario International Airport to Bangkok, it'll take you around 35 minutes to reach the heart of the city in a ride-share or taxi.

  • If you travel by public transport, the ride to the centre takes 1 hour 5 minutes or so.

  • There are some comfortable places ready to welcome you near DMK. Unwind and get cosy after your ONT to Bangkok flight at one of these well-located options:

  • Lock in the best price by reserving your ride from DMK three weeks ahead of time. You'll also have access to a bigger selection of vehicles.

Best time to go to Bangkok

  • February is the most popular month for flights from Ontario International Airport to Bangkok. To steer clear of the crowds, plan your trip to Bangkok in May.

  • Lock in a Ontario International Airport to Bangkok plane ticket with a departure in April if you want to experience the city during its warmest month. Expect temperatures to range from 26ºC (79ºF) to 37ºC (99ºF).

  • If you like cooler conditions, search for a cheap ticket from ONT to Bangkok in January when temperatures average between 19ºC (66ºF) and 34ºC (93ºF).

More about Bangkok

  • When it comes to searching for somewhere to rest your head, you'll find the best stays in Bangkok right here. Browse these hotels after you've booked your flight from Ontario International Airport to Bangkok:

  • All great holidays should include some sightseeing. Wat Phra Kaew, Grand Palace and Songkran Festival Silom are attractions you won't want to skip in Bangkok.

Explore more of Thailand

  • Bangkok has plenty going for it, but there are so many other parts of Thailand you'll want to see. About 467 kilometres northeast of Bangkok, a trip to Udon Thani will keep you on the move. Start with leading sights like Thai-Chinese Cultural Centre, Wat Pho Chai and Wat Burapa Wanaram.

  • Around 225 kilometres northeast of Bangkok, Nakhon Ratchasima is another essential stop in Thailand. Start your sightseeing at Night Safari Korat, Wat Chai Mongkol and Wat Na Pha That.

Plan the rest of your trip from Ontario to Bangkok

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