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Suvarnabhumi

$420+ 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 7/21. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — BKK
Jul 8 — Jul 151
Tue 7/8
Tue 7/15
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 July 3, 2025.

Round-trip from

$735
(CrystalTravel)

One-way from

$420
(FlightHub)

Popular in

July

Cheapest in

September

Average price

$1,476
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. 16% potential increase in price ($201 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($39 potential savings vs. average RT price).
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Average for round-trip flights in July 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 July 3, 2025.

This CrystalTravel deal was found by Cheapflights users on 7/3. 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.
Mon 11/106:43 amONT - BKK
2 stops25h 37mKorean Air
Tue 11/2511:15 pmBKK - ONT
2 stops33h 02mKorean Air
Deal found 7/3$735
This Delta deal was found by Cheapflights users on 7/1. 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.
Thu 8/76:25 amONT - BKK
2 stops25h 20mDelta
Tue 8/269:50 amBKK - ONT
2 stops26h 50mDelta
Deal found 7/1$778
This CrystalTravel deal was found by Cheapflights users on 7/1. 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 9/96:00 amONT - BKK
2 stops32h 35mUnited Airlines
Fri 10/107:00 amBKK - ONT
2 stops29h 42mUnited Airlines
Deal found 7/1$805
This Gotogate deal was found by Cheapflights users on 7/3. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/1612:45 amONT - BKK
1 stop19h 00mChina Airlines
Tue 9/210:50 amBKK - ONT
1 stop21h 50mChina Airlines
Deal found 7/3$815

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 July 3, 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

Mon 11/10

6:43 am-11:20 pm

2 stops25h 37m

Bangkok Suvarnabhumi

Tue 11/25

11:15 pm-5:17 pm

2 stops33h 02m

$735

OntarioBangkok

ONT - BKK

ONTBKK

Ontario

Thu 8/7

6:25 am-9:45 pm

2 stops25h 20m

Bangkok Suvarnabhumi

Tue 8/26

9:50 am-10:40 pm

2 stops26h 50m

$778

OntarioBangkok

ONT - BKK

ONTBKK

Ontario

Tue 9/9

6:00 am-4:35 am

2 stops32h 35m

Bangkok Suvarnabhumi

Fri 10/10

7:00 am-10:42 pm

2 stops29h 42m

$805

OntarioBangkok

ONT - BKK

ONTBKK

Ontario

Sat 8/16

12:45 am-9:45 am

1 stop19h 00m

Bangkok Suvarnabhumi

Tue 9/2

10:50 am-6:40 pm

1 stop21h 50m

$815

OntarioBangkok

ONT - BKK

ONTBKK

Ontario

Mon 7/21

6:25 am-11:25 pm

2 stops27h 00m

$420

OntarioBangkok

ONT - BKK

ONTBKK

Ontario

Tue 7/22

6:25 am-11:25 pm

2 stops27h 00m

$434

OntarioBangkok

ONT - BKK

ONTBKK

Ontario

Thu 7/31

12:45 am-4:20 pm

1 stop25h 35m

$473

OntarioBangkok

ONT - BKK

ONTBKK

Ontario

Sat 8/2

11:45 pm-4:40 pm

1 stop26h 55m

$480

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/30

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 June 27, 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 $952). Flying from Ontario to Bangkok Suvarnabhumi Airport in December is currently the most expensive (average of $1,573). 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 July 3, 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.

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 July 3, 2025.
Read reviews from past customers who have flown STARLUX Airlines, Korean Air, and China Airlines from Ontario to Bangkok Suvarnabhumi Airport. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
STARLUX Airlines
9.0
Wonderful
188 reviews

Overall

9.0

Crew

9.3

Entertainment

9.0

Boarding

9.0

Food

8.9

Comfort

9.0

Reviews

1 / 7
10.0
Excellent

ltulagan,Jun 2025

TPE - SEA

The whole trip was very pleasant from the crew, the food, the amenities during the flight.
STARLUX Airlines
9.0
Wonderful
188 reviews
STARLUX Airlines
9.0
Wonderful
188 reviews

Overall

9.0

Crew

9.3

Entertainment

9.0

Boarding

9.0

Food

8.9

Comfort

9.0

Reviews

1 / 7
10.0
Excellent

ltulagan,Jun 2025

TPE - SEA

The whole trip was very pleasant from the crew, the food, the amenities during the flight.
Korean Air
8.4
Very good
1,101 reviews
STARLUX Airlines
9.0
Wonderful
188 reviews

Overall

9.0

Crew

9.3

Entertainment

9.0

Boarding

9.0

Food

8.9

Comfort

9.0

Reviews

1 / 7
10.0
Excellent

ltulagan,Jun 2025

TPE - SEA

The whole trip was very pleasant from the crew, the food, the amenities during the flight.
China Airlines
8.3
Very good
744 reviews
STARLUX Airlines
9.0
Wonderful
188 reviews

Overall

9.0

Crew

9.3

Entertainment

9.0

Boarding

9.0

Food

8.9

Comfort

9.0

Reviews

1 / 7
10.0
Excellent

ltulagan,Jun 2025

TPE - SEA

The whole trip was very pleasant from the crew, the food, the amenities during the flight.
Delta
8.0
Very good
7,982 reviews
STARLUX Airlines
9.0
Wonderful
188 reviews

Overall

9.0

Crew

9.3

Entertainment

9.0

Boarding

9.0

Food

8.9

Comfort

9.0

Reviews

1 / 7
10.0
Excellent

ltulagan,Jun 2025

TPE - SEA

The whole trip was very pleasant from the crew, the food, the amenities during the flight.
United Airlines
7.4
Good
8,861 reviews
STARLUX Airlines
9.0
Wonderful
188 reviews

Overall

9.0

Crew

9.3

Entertainment

9.0

Boarding

9.0

Food

8.9

Comfort

9.0

Reviews

1 / 7
10.0
Excellent

ltulagan,Jun 2025

TPE - SEA

The whole trip was very pleasant from the crew, the food, the amenities during the flight.

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?

    Korean Air, at $735, was found to be the cheapest airline from Ontario to Bangkok Suvarnabhumi Airport.Alternate airlines to your destination round-trip include Delta and United 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 Korean Air, which is currently one of the cheapest options available, starting at $420. Delta flights start at $434 while deals on China Airlines start at $473 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 $952). Flying from Ontario to Bangkok Suvarnabhumi Airport in December is currently the most expensive (average of $1,573). 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
Chonburi
Kanchanaburi
Cha-am
Ko Samet
Phetchaburi
Pak Chong
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 July 3, 2025.
AirlineCheapestAverageFlexibilityOn-time
Korean AirCheapest$781Average$832FlexibilityNo cancel feeOn-time81%
United AirlinesCheapest$795Average$927FlexibilityNo cancel feeOn-time69%
STARLUX AirlinesCheapest$808Average$900FlexibilityNo cancel feeOn-timeN/A
China AirlinesCheapest$819Average$925FlexibilityNo cancel feeOn-time70%

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