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$446+ Cheap flights from Suvarnabhumi (BKK) to Ontario (ONT)

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 10/5. Fares are subject to change and may not be available on all flights or dates of travel.
BKK — ONT
Aug 4 — Aug 111
Mon 8/4
Mon 8/11
1 adult, Economy
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Cheap flight deals from Suvarnabhumi to Ontario

Discover tips and strategies to find the most affordable flight options for your journey from Suvarnabhumi (BKK) to Ontario (ONT). 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 30, 2025.

Round-trip from

$762
(Trip.com)

One-way from

$446
(SmartFares)

Popular in

November

Cheapest in

December

Average price

$1,052
From Bangkok Suvarnabhumi to Ontario
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One-way flight from Bangkok Suvarnabhumi to Ontario
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High demand for flights, 2% potential price rise
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Cheapest flight prices on average. 0% potential price decrease ($9 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 Suvarnabhumi to Ontario

Cheapest flights from Suvarnabhumi to Ontario
Explore the most affordable flight options available from Suvarnabhumi to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 30, 2025.

This Trip.com deal was found by Cheapflights users on 7/30. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/191:45 pmBKK - ONT
1 stop17h 05mSTARLUX Airlines
Fri 1/99:45 pmONT - BKK
1 stop23h 50mSTARLUX Airlines
Deal found 7/30$762
This Flightnetwork deal was found by Cheapflights users on 7/29. 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 Flightnetwork is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/410:50 amBKK - ONT
1 stop21h 50mChina Airlines
Wed 9/1712:10 amONT - BKK
1 stop22h 00mChina Airlines
Deal found 7/29$851
This United Airlines deal was found by Cheapflights users on 7/30. 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.
Tue 8/199:35 amBKK - ONT
2 stops46h 02mUnited Airlines
Fri 8/226:00 amONT - BKK
2 stops32h 35mUnited Airlines
Deal found 7/30$895
This Expedia deal was found by Cheapflights users on 7/29. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/81:10 pmBKK - ONT
1 stop17h 55mMultiple Airlines
Tue 10/216:37 amONT - BKK
2 stops25h 08mMultiple Airlines
Deal found 7/29$943

Cheapflights Fare Finder

 
Customize your flight search to find flights from Suvarnabhumi to Ontario 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 30, 2025.
Use the filters below to find and compare flights from Bangkok Suvarnabhumi Airport to Ontario that are best for you.

Fly from

Suvarnabhumi

Fly to

Ontario

Route

Depart

Return

Price

BangkokOntario

BKK - ONT

BKKONT

Bangkok Suvarnabhumi

Fri 12/19

1:45 pm-3:50 pm

1 stop17h 05m

Ontario

Fri 1/9

9:45 pm-12:35 pm

1 stop23h 50m

$762

BangkokOntario

BKK - ONT

BKKONT

Bangkok Suvarnabhumi

Thu 9/4

10:50 am-6:40 pm

1 stop21h 50m

Ontario

Wed 9/17

12:10 am-12:10 pm

1 stop22h 00m

$851

BangkokOntario

BKK - ONT

BKKONT

Bangkok Suvarnabhumi

Tue 8/19

9:35 am-5:37 pm

2 stops46h 02m

Ontario

Fri 8/22

6:00 am-4:35 am

2 stops32h 35m

$895

BangkokOntario

BKK - ONT

BKKONT

Bangkok Suvarnabhumi

Mon 9/8

1:10 pm-5:05 pm

1 stop17h 55m

Ontario

Tue 10/21

6:37 am-9:45 pm

2 stops25h 08m

$943

BangkokOntario

BKK - ONT

BKKONT

Bangkok Suvarnabhumi

Sun 10/5

5:50 pm-5:05 pm

1 stop37h 15m

$446

BangkokOntario

BKK - ONT

BKKONT

Bangkok Suvarnabhumi

Fri 10/10

11:30 am-5:05 pm

2 stops43h 35m

$545

BangkokOntario

BKK - ONT

BKKONT

Bangkok Suvarnabhumi

Fri 1/23

2:35 am-4:50 pm

1 stop29h 15m

$551

BangkokOntario

BKK - ONT

BKKONT

Bangkok Suvarnabhumi

Fri 11/7

9:25 am-10:45 pm

2 stops28h 20m

$563

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/30

Best time to book a flight from Suvarnabhumi to Ontario

Have a flexible travel schedule? Discover the best time to fly to Ontario from Suvarnabhumi 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 Bangkok Suvarnabhumi Airport to Ontario

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

Currently, August is the cheapest month in which you can book a flight from Bangkok Suvarnabhumi Airport to Ontario (average of $246). Flying from Bangkok Suvarnabhumi Airport to Ontario in March is currently the most expensive (average of $328). 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.

Reviews of airlines servicing Ontario

Get insights into the airlines that provide service to Ontario. 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 Ontario. Reviews last updated July 30, 2025.
See what other customers who have flown with STARLUX Airlines, China Airlines, and United Airlines from Bangkok Suvarnabhumi Airport to Ontario have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
STARLUX Airlines
9.0
Wonderful
199 reviews

Food

8.8

Boarding

9.0

Comfort

8.9

Crew

9.3

Overall

9.0

Entertainment

8.9

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
199 reviews
STARLUX Airlines
9.0
Wonderful
199 reviews

Food

8.8

Boarding

9.0

Comfort

8.9

Crew

9.3

Overall

9.0

Entertainment

8.9

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
754 reviews
STARLUX Airlines
9.0
Wonderful
199 reviews

Food

8.8

Boarding

9.0

Comfort

8.9

Crew

9.3

Overall

9.0

Entertainment

8.9

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
8,896 reviews
STARLUX Airlines
9.0
Wonderful
199 reviews

Food

8.8

Boarding

9.0

Comfort

8.9

Crew

9.3

Overall

9.0

Entertainment

8.9

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 Suvarnabhumi to Ontario. 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 into for flights to Ontario from Bangkok Suvarnabhumi?

    Ontario (ONT) is the airport you will fly into if you book a flight from Bangkok Suvarnabhumi to Ontario. You should not have trouble finding flights to Ontario from Bangkok Suvarnabhumi; the airport handles an average of 0 inbound flights from Bangkok Suvarnabhumi per day. You should also have plenty of airline options to choose from since 1 airline has flights to the Ontario airport from Bangkok Suvarnabhumi. It is only a 3.1 mi journey from Ontario (ONT) to Ontario’s city center.

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

    STARLUX Airlines, at $762, was found to be the cheapest airline from Bangkok Suvarnabhumi Airport to Ontario.Alternate airlines to your destination round-trip include China Airlines and United Airlines. You may be able to fly from Bangkok Suvarnabhumi Airport to Ontario for 21% less than the average price by searching for these airlines.

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

    $446 is the cheapest one-way deal found within the past few days, from STARLUX Airlines. You may also be able to find cheap deals on China Airlines and United Airlines, with prices starting from $551 and $563, respectively.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Suvarnabhumi to Ontario 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 Bangkok Suvarnabhumi Airport to Ontario?

    Currently, August is the cheapest month in which you can book a flight from Bangkok Suvarnabhumi Airport to Ontario (average of $246). Flying from Bangkok Suvarnabhumi Airport to Ontario in March is currently the most expensive (average of $328). 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

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Top airline flying from Suvarnabhumi to Ontario

Discover the top airline that operate flights from Suvarnabhumi to Ontario. 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 30, 2025.
AirlineCheapestAverageFlexibilityOn-time
China AirlinesCheapest$828Average$972FlexibilityNo cancel feeOn-time70%

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