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$493+ 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 11/23. Fares are subject to change and may not be available on all flights or dates of travel.
BKK — ONT
Jun 17 — Jun 241
Tue 6/17
Tue 6/24
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 June 12, 2025.

Round-trip from

$799
(FlightHub)

One-way from

$493
(FlightHub)

Popular in

November

Cheapest in

December

Average price

$994
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, 1% potential price rise
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Cheapest flight prices on average. 1% potential price decrease ($12 potential savings vs. average RT price).
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Average for round-trip flights in June 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 June 12, 2025.

This FlightHub deal was found by Cheapflights users on 6/11. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/102:05 pmBKK - ONT
1 stop17h 45mChina Airlines
Sat 5/212:10 amONT - BKK
1 stop19h 35mChina Airlines
Deal found 6/11$799
This Gotogate deal was found by Cheapflights users on 6/12. 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.
Fri 6/131:10 pmBKK - ONT
1 stop17h 55mSTARLUX Airlines
Fri 6/2711:10 pmONT - BKK
1 stop27h 30mSTARLUX Airlines
Deal found 6/12$844
This United Airlines deal was found by Cheapflights users on 6/11. 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.
Wed 9/179:35 amBKK - ONT
2 stops24h 58mUnited Airlines
Fri 9/261:53 pmONT - BKK
2 stops48h 42mUnited Airlines
Deal found 6/11$890
This Agoda.com deal was found by Cheapflights users on 6/11. 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 Agoda.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/292:40 amBKK - ONT
1 stop29h 20mMultiple Airlines
Wed 10/2211:10 pmONT - BKK
1 stop22h 50mMultiple Airlines
Deal found 6/11$976

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 June 12, 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

Wed 10/1

10:50 am-6:00 pm

1 stop21h 10m

Ontario

Mon 10/20

12:10 am-9:45 am

1 stop19h 35m

$799

BangkokOntario

BKK - ONT

BKKONT

Bangkok Suvarnabhumi

Tue 12/9

5:40 pm-3:50 pm

1 stop37h 10m

Ontario

Wed 4/29

11:10 pm-12:00 pm

1 stop22h 50m

$847

BangkokOntario

BKK - ONT

BKKONT

Bangkok Suvarnabhumi

Wed 9/17

9:35 am-8:33 pm

2 stops24h 58m

Ontario

Tue 9/23

6:50 pm-4:35 am

2 stops43h 45m

$890

BangkokOntario

BKK - ONT

BKKONT

Bangkok Suvarnabhumi

Mon 9/29

2:40 am-6:00 pm

1 stop29h 20m

Ontario

Wed 10/22

11:10 pm-12:00 pm

1 stop22h 50m

$976

BangkokOntario

BKK - ONT

BKKONT

Bangkok Suvarnabhumi

Thu 9/25

2:30 am-11:59 pm

2 stops35h 29m

Ontario

Tue 10/14

6:00 am-6:15 am

2 stops34h 15m

$1,253

BangkokOntario

BKK - ONT

BKKONT

Bangkok Suvarnabhumi

Sun 11/23

2:35 am-4:50 pm

1 stop29h 15m

$493

BangkokOntario

BKK - ONT

BKKONT

Bangkok Suvarnabhumi

Fri 9/19

5:50 pm-5:05 pm

1 stop37h 15m

$496

BangkokOntario

BKK - ONT

BKKONT

Bangkok Suvarnabhumi

Wed 6/18

9:35 am-10:45 pm

2 stops51h 10m

$561

BangkokOntario

BKK - ONT

BKKONT

Bangkok Suvarnabhumi

Sat 11/29

10:40 am-4:50 pm

2 stops21h 10m

$570

BangkokOntario

BKK - ONT

BKKONT

Bangkok Suvarnabhumi

Mon 9/22

2:30 am-6:28 pm

2 stops29h 58m

$704

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/11

Showing 1-10 of 11 results
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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.

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

Find hourly flight availability from Suvarnabhumi to Ontario. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated June 12, 2025.

One of the essential ways to save on airfare from Bangkok Suvarnabhumi Airport to Ontario is to remain as flexible as possible. Flights that are at noon tend to be the most expensive. A flight in the morning could potentially save you up to 8% on airfare.

Rainfall in Ontario by month

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

In terms of precipitation, rainfall in Ontario ranges from 0.1 - 3.4 inches per month. February is typically the wettest month, when rainfall can reach 3.4 in. June is typically the driest time to visit Ontario when rainfall is around 0.1 in.

Temperature in Ontario by month

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

If weather is an important factor for your trip to Ontario, use this chart to help with planning. For those seeking warmer temperatures, August is the ideal time of year to visit, when temperatures reach an average of 78.8 F. Travelers looking to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 53.6 F).

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 June 12, 2025.
Read reviews from past customers who have flown STARLUX Airlines, Japan Airlines and China Airlines from Bangkok to Ontario. In addition to providing an overall rating, users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
STARLUX Airlines
9.1
Wonderful
177 reviews

Food

8.8

Entertainment

8.9

Boarding

9.0

Overall

9.1

Comfort

9.0

Crew

9.3

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
9.1
Wonderful
177 reviews
STARLUX Airlines
9.1
Wonderful
177 reviews

Food

8.8

Entertainment

8.9

Boarding

9.0

Overall

9.1

Comfort

9.0

Crew

9.3

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.
Japan Airlines
8.3
Very good
1,490 reviews
STARLUX Airlines
9.1
Wonderful
177 reviews

Food

8.8

Entertainment

8.9

Boarding

9.0

Overall

9.1

Comfort

9.0

Crew

9.3

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
738 reviews
STARLUX Airlines
9.1
Wonderful
177 reviews

Food

8.8

Entertainment

8.9

Boarding

9.0

Overall

9.1

Comfort

9.0

Crew

9.3

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.
Qatar Airways
7.4
Good
3,584 reviews
STARLUX Airlines
9.1
Wonderful
177 reviews

Food

8.8

Entertainment

8.9

Boarding

9.0

Overall

9.1

Comfort

9.0

Crew

9.3

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
8,790 reviews
STARLUX Airlines
9.1
Wonderful
177 reviews

Food

8.8

Entertainment

8.9

Boarding

9.0

Overall

9.1

Comfort

9.0

Crew

9.3

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?

    China Airlines, at $799, was found to be the cheapest airline from Bangkok Suvarnabhumi Airport to Ontario.Alternate airlines to your destination round-trip include STARLUX Airlines and United Airlines. You may be able to fly from Bangkok Suvarnabhumi Airport to Ontario for 18% 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?

    $493 is the cheapest one-way deal found within the past few days, from China Airlines. You may also be able to find cheap deals on STARLUX Airlines and United Airlines, with prices starting from $496 and $561, 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 June 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
China AirlinesCheapest$872Average$963FlexibilityNo cancel feeOn-time70%

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