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Suvarnabhumi

$421+ Cheap flights from Ontario (ONT) to Suvarnabhumi (BKK)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 4/28. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — BKK
Apr 16 — Apr 231
Wed 4/16
Wed 4/23
1 adult, Economy
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Cheapflights Tip: The best prices from Ontario to Bangkok Suvarnabhumi are usually found in September or March, booked 63 days in advance, depart on a Wednesday or Monday and return on a Wednesday

Cheap flight deals from Ontario to Suvarnabhumi

Discover tips and strategies to find the most affordable flight options for your journey from Ontario (ONT) to Suvarnabhumi (BKK). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated April 11, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$737
(Delta)

One-way from

$421
(United Airlines)

Popular in

June

Cheapest in

September

Average price

$921
Provider with most accurate pricing for Ontario-Bangkok Suvarnabhumi flight deals.
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Provider most trusted by Cheapflights users for Ontario-Bangkok Suvarnabhumi flights.
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From Ontario to Bangkok Suvarnabhumi
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One-way flight from Ontario to Bangkok Suvarnabhumi
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Highest demand for flights based on searches. 23% potential increase in price ($324 potential increase over avg. RT price).
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Cheapest flight prices on average. 5% potential price decrease ($52 potential savings vs. average RT price).
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Average for round-trip flights in April 2025
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Find flight deals from Ontario to Suvarnabhumi

Cheapest flights from Ontario to Suvarnabhumi
Explore the most affordable flight options available from Ontario to Suvarnabhumi. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 11, 2025.

This CrystalTravel deal was found by Cheapflights users on 4/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CrystalTravel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/187:00 amONT - BKK
2 stops23h 30mKorean Air
Tue 12/99:30 pmBKK - ONT
2 stops30h 48mKorean Air
Deal found 4/10$718
This Delta deal was found by Cheapflights users on 4/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/275:45 amONT - BKK
2 stops26h 00mDelta
Wed 5/219:50 amBKK - ONT
2 stops22h 30mDelta
Deal found 4/9$737
This oojo deal was found by Cheapflights users on 4/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/2811:45 pmONT - BKK
1 stop20h 05mChina Airlines
Sun 12/212:35 amBKK - ONT
1 stop29h 15mChina Airlines
Deal found 4/10$786
This United Airlines deal was found by Cheapflights users on 4/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/226:36 pmONT - BKK
2 stops43h 59mUnited Airlines
Tue 9/309:35 amBKK - ONT
2 stops27h 18mUnited Airlines
Deal found 4/10$800
This Korean Air deal was found by Cheapflights users on 4/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Korean Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/197:00 amONT - BKK
2 stops25h 20mMultiple Airlines
Mon 12/81:00 amBKK - ONT
2 stops27h 18mMultiple Airlines
Deal found 4/10$829
This oojo deal was found by Cheapflights users on 4/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/111:45 pmONT - BKK
1 stop22h 15mSTARLUX Airlines
Fri 8/155:50 pmBKK - ONT
1 stop37h 50mSTARLUX Airlines
Deal found 4/10$891
This oojo deal was found by Cheapflights users on 4/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/111:39 amONT - BKK
2 stops29h 41mQatar Airways
Wed 10/228:00 pmBKK - ONT
2 stops40h 37mQatar Airways
Deal found 4/10$959

Cheapflights Fare Finder

Customize your flight search to find flights from Ontario to Suvarnabhumi that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated April 11, 2025.
Use the filters below to find and compare flights from Ontario to Bangkok Suvarnabhumi Airport that are best for you.

Fly from

Ontario

Fly to

Suvarnabhumi

Route

Depart

Return

Price

OntarioBangkok

ONT - BKK

ONTBKK

Ontario

Sun 4/27

5:45 am-9:45 pm

2 stops26h 00m

Bangkok Suvarnabhumi

Wed 5/21

9:50 am-6:20 pm

2 stops22h 30m

$737

OntarioBangkok

ONT - BKK

ONTBKK

Ontario

Mon 4/28

5:45 am-9:45 pm

2 stops26h 00m

Bangkok Suvarnabhumi

Mon 5/19

11:30 pm-6:20 pm

2 stops32h 50m

$742

OntarioBangkok

ONT - BKK

ONTBKK

Ontario

Tue 8/19

12:45 am-9:45 am

1 stop19h 00m

Bangkok Suvarnabhumi

Wed 9/3

1:20 pm-6:40 pm

1 stop19h 20m

$786

OntarioBangkok

ONT - BKK

ONTBKK

Ontario

Mon 9/22

6:36 pm-4:35 am

2 stops43h 59m

Bangkok Suvarnabhumi

Mon 9/29

9:35 am-10:53 pm

2 stops27h 18m

$800

OntarioBangkok

ONT - BKK

ONTBKK

Ontario

Fri 8/1

11:45 pm-12:00 pm

1 stop22h 15m

Bangkok Suvarnabhumi

Fri 8/15

5:50 pm-5:40 pm

1 stop37h 50m

$891

OntarioBangkok

ONT - BKK

ONTBKK

Ontario

Fri 5/16

6:00 am-11:40 pm

2 stops27h 40m

Bangkok Suvarnabhumi

Wed 5/21

9:40 pm-6:20 pm

2 stops34h 40m

$940

OntarioBangkok

ONT - BKK

ONTBKK

Ontario

Wed 10/1

11:39 am-7:20 am

2 stops29h 41m

Bangkok Suvarnabhumi

Wed 10/22

8:00 pm-10:37 pm

2 stops40h 37m

$959

OntarioBangkok

ONT - BKK

ONTBKK

Ontario

Mon 4/28

6:00 am-11:55 pm

2 stops27h 55m

$421

OntarioBangkok

ONT - BKK

ONTBKK

Ontario

Mon 8/4

7:00 am-9:45 pm

2 stops24h 45m

$447

OntarioBangkok

ONT - BKK

ONTBKK

Ontario

Thu 4/17

8:15 am-11:50 pm

2 stops25h 35m

$449

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/10

Showing 1-10 of 15 results
1
2

Compare providers for flights from Ontario to Suvarnabhumi

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Ontario to Suvarnabhumi in April.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
AranGrantPrice Accuracy3 starsTrust Score*1 star
FlightHubPrice Accuracy3 starsTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars
CheapfaremartPrice Accuracy-Trust Score*3 stars
FareScanPrice Accuracy-Trust Score*3 stars
Justfly.comPrice Accuracy3 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Ontario-Bangkok Suvarnabhumi Airport flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Ontario-Bangkok Suvarnabhumi Airport flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Ontario-Bangkok Suvarnabhumi Airport flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Ontario-Bangkok Suvarnabhumi Airport flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Ontario-Bangkok Suvarnabhumi Airport flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Ontario to Suvarnabhumi

Have a flexible travel schedule? Discover the best time to fly to Suvarnabhumi from Ontario with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Ontario to Bangkok Suvarnabhumi Airport

How far ahead should I book a flight from Ontario to Bangkok Suvarnabhumi Airport?

Use this chart to determine the optimal time to book a round-trip flight from Ontario to Suvarnabhumi. Price data was last updated on April 4, 2025.

Booking 63 days in advance of your planned departure date is, on average, the best time to get cheap flights from Ontario to Bangkok Suvarnabhumi Airport. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

What is the cheapest month to book a flight from Ontario to Bangkok Suvarnabhumi Airport?

Currently, March is the cheapest month in which you can book a flight from Ontario to Bangkok Suvarnabhumi Airport (average of $958). Flying from Ontario to Bangkok Suvarnabhumi Airport in December is currently the most expensive (average of $1,574). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from ONT to BKK?

Find hourly flight availability from Ontario to Suvarnabhumi. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated April 11, 2025.

It’s typically best to fly out from Ontario to Bangkok Suvarnabhumi Airport in the morning. Doing so could potentially save you 29% on the flight price compared to flying in the afternoon, which is usually more expensive.

Rainfall in Suvarnabhumi by month

Plan your trip to Suvarnabhumi by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Bangkok Suvarnabhumi Airport ranges from 0.4 - 12.6 inches per month. September is typically the wettest month, when rainfall can reach 12.6 in. January is typically the driest time to visit Bangkok Suvarnabhumi Airport when rainfall is around 0.4 in.

Temperature in Suvarnabhumi by month

Plan your trip to Suvarnabhumi by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Bangkok Suvarnabhumi Airport, use this chart to help with planning. For those seeking warmer temperatures, April is the ideal time of year to visit, when temperatures reach an average of 86.0 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 78.8 F).

Reviews of airlines servicing Suvarnabhumi

Get insights into the airlines that provide service to Suvarnabhumi. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Suvarnabhumi. Reviews last updated April 11, 2025.
Peruse reviews from past customers who have flown with STARLUX Airlines, Korean Air and Japan Airlines from Ontario to Bangkok to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
STARLUX Airlines
9.1
Wonderful
151 reviews

Food

8.9

Boarding

9.0

Overall

9.1

Comfort

9.0

Crew

9.3

Entertainment

9.0

Reviews

1 / 5
10.0
Excellent

Andrew,Jan 2025

LAX - TPE

Crew were attentive from start to finish. Each meal was amazing. IFE screen was huge and had quite a bit of western movies, however the tv shows were lacking.
STARLUX Airlines
9.1
Wonderful
151 reviews
STARLUX Airlines
9.1
Wonderful
151 reviews

Food

8.9

Boarding

9.0

Overall

9.1

Comfort

9.0

Crew

9.3

Entertainment

9.0

Reviews

1 / 5
10.0
Excellent

Andrew,Jan 2025

LAX - TPE

Crew were attentive from start to finish. Each meal was amazing. IFE screen was huge and had quite a bit of western movies, however the tv shows were lacking.
Korean Air
8.4
Very good
1,060 reviews
STARLUX Airlines
9.1
Wonderful
151 reviews

Food

8.9

Boarding

9.0

Overall

9.1

Comfort

9.0

Crew

9.3

Entertainment

9.0

Reviews

1 / 5
10.0
Excellent

Andrew,Jan 2025

LAX - TPE

Crew were attentive from start to finish. Each meal was amazing. IFE screen was huge and had quite a bit of western movies, however the tv shows were lacking.
Japan Airlines
8.3
Very good
1,440 reviews
STARLUX Airlines
9.1
Wonderful
151 reviews

Food

8.9

Boarding

9.0

Overall

9.1

Comfort

9.0

Crew

9.3

Entertainment

9.0

Reviews

1 / 5
10.0
Excellent

Andrew,Jan 2025

LAX - TPE

Crew were attentive from start to finish. Each meal was amazing. IFE screen was huge and had quite a bit of western movies, however the tv shows were lacking.
China Airlines
8.2
Very good
729 reviews
STARLUX Airlines
9.1
Wonderful
151 reviews

Food

8.9

Boarding

9.0

Overall

9.1

Comfort

9.0

Crew

9.3

Entertainment

9.0

Reviews

1 / 5
10.0
Excellent

Andrew,Jan 2025

LAX - TPE

Crew were attentive from start to finish. Each meal was amazing. IFE screen was huge and had quite a bit of western movies, however the tv shows were lacking.
Delta
8.0
Very good
7,910 reviews
STARLUX Airlines
9.1
Wonderful
151 reviews

Food

8.9

Boarding

9.0

Overall

9.1

Comfort

9.0

Crew

9.3

Entertainment

9.0

Reviews

1 / 5
10.0
Excellent

Andrew,Jan 2025

LAX - TPE

Crew were attentive from start to finish. Each meal was amazing. IFE screen was huge and had quite a bit of western movies, however the tv shows were lacking.

Related info for your journey

Find useful and relevant information for your journey from Ontario to Suvarnabhumi. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly from for flights from Ontario to Bangkok Suvarnabhumi?

    Most people fly from Ontario (ONT) if they book a flight from Ontario to Bangkok Suvarnabhumi. On average, Ontario has 0 outbound flights to Bangkok Suvarnabhumi per day from 4 airlines. Ontario is conveniently located just 3.1 mi from Ontario’s city center.

  • What are the cheapest airlines flying from Ontario to Bangkok Suvarnabhumi Airport round-trip?

    Delta, at $737, was found to be the cheapest airline from Ontario to Bangkok Suvarnabhumi Airport.Alternate airlines to your destination round-trip include Korean Air and China Airlines. You may be able to fly from Ontario to Bangkok Suvarnabhumi Airport for 30% less than the average price by searching for these airlines.

  • What are the cheapest airlines to fly from Ontario to Bangkok Suvarnabhumi Airport one-way?

    To fly one-way, consider booking your trip with United Airlines, which is currently one of the cheapest options available, starting at $421. Korean Air flights start at $447 while deals on China Airlines start at $450 one-way.

  • Can I find deals for flights from Ontario to Suvarnabhumi that include hotel bookings?

    Yes. In addition to deals on Ontario to Suvarnabhumi flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Ontario to Suvarnabhumi?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Ontario to Suvarnabhumi.

  • Can I find deals for business class flights from Ontario to Suvarnabhumi?

    Yes. Cheapflights offers flight deals from Ontario to Suvarnabhumi by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Ontario to Bangkok Suvarnabhumi Airport?

    Currently, March is the cheapest month in which you can book a flight from Ontario to Bangkok Suvarnabhumi Airport (average of $958). Flying from Ontario to Bangkok Suvarnabhumi Airport in December is currently the most expensive (average of $1,574). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Traveling to a place near Ontario?

Book flights to Ontario if you plan to visit one of these locations
Sattahip
Cha-am
Chonburi
Kanchanaburi
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Ko Lan

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Alternative routes for Ontario to Suvarnabhumi

See prices for flight routes from nearby airports that may be better suited for you.
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Top 4 airlines flying from Ontario to Suvarnabhumi

Discover the top 4 airlines that operate flights from Ontario to Suvarnabhumi. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated April 11, 2025.
AirlineCheapestAverageFlexibilityOn-time
Korean AirCheapest$785Average$859FlexibilityNo cancel feeOn-time81%
United AirlinesCheapest$795Average$1,035FlexibilityNo cancel feeOn-time69%
DeltaCheapest$807Average$809FlexibilityNo cancel feeOn-timeN/A
China AirlinesCheapest$829Average$928FlexibilityNo cancel feeOn-time70%

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