HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Ontario

$508+ 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 9/12. Fares are subject to change and may not be available on all flights or dates of travel.
BKK — ONT
Jun 23 — Jun 301
Mon 6/23
Mon 6/30
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Suvarnabhumi to Ontario with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

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 18, 2025.

Round-trip from

$833
(Trip.com)

One-way from

$508
(SmartFares)

Popular in

July

Cheapest in

December

Average price

$994
From Bangkok Suvarnabhumi to Ontario
Search Deals
One-way flight from Bangkok Suvarnabhumi to Ontario
Search Deals
Highest demand for flights based on searches. 4% potential increase in price ($49 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($15 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in June 2025
Search Deals

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 18, 2025.

This oojo deal was found by Cheapflights users on 6/17. 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 12/165:40 pmBKK - ONT
1 stop37h 10mSTARLUX Airlines
Sat 1/39:45 pmONT - BKK
1 stop27h 45mSTARLUX Airlines
Deal found 6/17$831
This Gotogate deal was found by Cheapflights users on 6/17. 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.
Mon 9/2210:50 amBKK - ONT
1 stop21h 10mChina Airlines
Mon 9/2912:10 amONT - BKK
1 stop26h 10mChina Airlines
Deal found 6/17$853
This United Airlines deal was found by Cheapflights users on 6/18. 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.
Sun 8/249:35 amBKK - ONT
2 stops24h 58mUnited Airlines
Thu 9/185:10 amONT - BKK
2 stops28h 45mUnited Airlines
Deal found 6/18$897
This Mytrip deal was found by Cheapflights users on 6/17. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 6/227:45 amBKK - ONT
2 stops24h 15mMultiple Airlines
Fri 7/412:45 amONT - BKK
2 stops24h 00mMultiple Airlines
Deal found 6/17$1,091
This oojo deal was found by Cheapflights users on 6/17. 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 12/92:00 amBKK - ONT
2 stops31h 17mQatar Airways
Thu 4/3011:30 amONT - BKK
2 stops28h 45mQatar Airways
Deal found 6/17$1,223
This FlightHub deal was found by Cheapflights users on 6/18. 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.
Sat 6/282:35 amBKK - ONT
2 stops34h 11mKorean Air
Sun 7/136:25 amONT - BKK
2 stops25h 20mKorean Air
Deal found 6/18$1,654
This Delta deal was found by Cheapflights users on 6/18. 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.
Tue 8/122:35 amBKK - ONT
2 stops46h 15mDelta
Wed 8/2711:40 amONT - BKK
2 stops44h 05mDelta
Deal found 6/18$1,672

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 18, 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

Mon 12/15

1:45 pm-3:50 pm

1 stop17h 05m

Ontario

Sat 1/3

9:45 pm-12:35 pm

1 stop23h 50m

$833

BangkokOntario

BKK - ONT

BKKONT

Bangkok Suvarnabhumi

Mon 9/22

10:50 am-6:00 pm

1 stop21h 10m

Ontario

Mon 9/29

12:10 am-4:20 pm

1 stop26h 10m

$853

BangkokOntario

BKK - ONT

BKKONT

Bangkok Suvarnabhumi

Sun 8/24

9:35 am-8:33 pm

2 stops24h 58m

Ontario

Thu 9/18

5:10 am-11:55 pm

2 stops28h 45m

$897

BangkokOntario

BKK - ONT

BKKONT

Bangkok Suvarnabhumi

Fri 8/1

2:40 am-6:40 pm

1 stop30h 00m

Ontario

Sat 8/9

11:45 pm-12:00 pm

1 stop22h 15m

$1,136

BangkokOntario

BKK - ONT

BKKONT

Bangkok Suvarnabhumi

Tue 12/9

2:00 am-6:17 pm

2 stops31h 17m

Ontario

Thu 4/30

11:30 am-6:15 am

2 stops28h 45m

$1,223

BangkokOntario

BKK - ONT

BKKONT

Bangkok Suvarnabhumi

Sat 6/28

2:35 am-10:46 pm

2 stops34h 11m

Ontario

Sun 7/13

6:25 am-9:45 pm

2 stops25h 20m

$1,654

BangkokOntario

BKK - ONT

BKKONT

Bangkok Suvarnabhumi

Tue 8/12

2:35 am-10:50 am

2 stops46h 15m

Ontario

Wed 8/27

11:40 am-9:45 pm

2 stops44h 05m

$1,672

BangkokOntario

BKK - ONT

BKKONT

Bangkok Suvarnabhumi

Fri 8/22

2:55 am-10:30 pm

2 stops33h 35m

Ontario

Wed 8/27

11:45 pm-6:30 am

2 stops40h 45m

$2,962

BangkokOntario

BKK - ONT

BKKONT

Bangkok Suvarnabhumi

Fri 9/12

1:10 pm-5:05 pm

1 stop17h 55m

$508

BangkokOntario

BKK - ONT

BKKONT

Bangkok Suvarnabhumi

Tue 11/11

2:35 am-4:50 pm

1 stop29h 15m

$529

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/16

Showing 1-10 of 13 results
1
2

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 18, 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 18, 2025.
Read reviews from past customers who have flown STARLUX Airlines, Korean Air 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
180 reviews

Overall

9.1

Food

8.9

Boarding

9.0

Entertainment

9.0

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
180 reviews
STARLUX Airlines
9.1
Wonderful
180 reviews

Overall

9.1

Food

8.9

Boarding

9.0

Entertainment

9.0

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.
Korean Air
8.4
Very good
1,090 reviews
STARLUX Airlines
9.1
Wonderful
180 reviews

Overall

9.1

Food

8.9

Boarding

9.0

Entertainment

9.0

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
742 reviews
STARLUX Airlines
9.1
Wonderful
180 reviews

Overall

9.1

Food

8.9

Boarding

9.0

Entertainment

9.0

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.
Delta
8.0
Very good
7,964 reviews
STARLUX Airlines
9.1
Wonderful
180 reviews

Overall

9.1

Food

8.9

Boarding

9.0

Entertainment

9.0

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
3,590 reviews
STARLUX Airlines
9.1
Wonderful
180 reviews

Overall

9.1

Food

8.9

Boarding

9.0

Entertainment

9.0

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?

    STARLUX Airlines, at $833, 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 15% 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?

    $508 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 $529 and $562, 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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

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 18, 2025.
AirlineCheapestAverageFlexibilityOn-time
China AirlinesCheapest$872Average$963FlexibilityNo cancel feeOn-time70%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.