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Ontario

$424+ Cheap flights from Southeast Asia 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 7/16. Fares are subject to change and may not be available on all flights or dates of travel.
BKK — ONT
May 6 — May 131
Tue 5/6
Tue 5/13
1 adult, Economy
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Cheap flight deals from Southeast Asia to Ontario

Keep the following information in mind while searching for Southeast Asia to Ontario flight deals. Data was last updated May 1, 2025.

Round-trip from

$686
(Gotogate)

One-way from

$424
(FlightHub)
From Southeast Asia to Ontario
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One-way flight from Southeast Asia to Ontario
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Find flight deals from Southeast Asia to Ontario

Cheapest flights from Southeast Asia to Ontario
Explore the most affordable flight options available from Southeast Asia to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on May 1, 2025.

This oojo deal was found by Cheapflights users on 4/30. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 6/2110:50 amCEB - ONT
1 stop21h 15mSTARLUX Airlines
Sat 8/3011:45 pmONT - CEB
1 stop19h 05mSTARLUX Airlines
Deal found 4/30$722
This oojo deal was found by Cheapflights users on 4/30. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/104:50 pmMNL - ONT
1 stop16h 10mChina Airlines
Mon 7/2112:45 amONT - MNL
1 stop17h 50mChina Airlines
Deal found 4/30$758
This oojo deal was found by Cheapflights users on 4/30. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/86:25 pmSGN - ONT
1 stop37h 15mSTARLUX Airlines
Mon 7/2811:45 pmONT - SGN
1 stop27h 30mSTARLUX Airlines
Deal found 4/30$767
This Trip.com deal was found by Cheapflights users on 4/29. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/122:45 pmKUL - ONT
1 stop18h 55mChina Airlines
Wed 9/1712:10 amONT - KUL
1 stop22h 15mChina Airlines
Deal found 4/29$775
This China Airlines deal was found by Cheapflights users on 4/30. 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 China Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/15:30 pmSGN - ONT
1 stop38h 30mChina Airlines
Wed 10/2911:45 pmONT - SGN
1 stop27h 05mChina Airlines
Deal found 4/30$776
This Trip.com deal was found by Cheapflights users on 4/30. 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 8/87:55 pmCRK - ONT
1 stop36h 45mSTARLUX Airlines
Mon 8/2511:45 pmONT - CRK
1 stop28h 10mSTARLUX Airlines
Deal found 4/30$815
This Trip.com deal was found by Cheapflights users on 4/29. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 6/221:45 pmSIN - ONT
1 stop19h 15mChina Airlines
Sat 7/512:45 amONT - SIN
1 stop20h 50mChina Airlines
Deal found 4/29$827
This KAYAK deal was found by Cheapflights users on 4/30. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 6/284:50 pmMNL - ONT
1 stop16h 10mMultiple Airlines
Sat 7/126:51 pmONT - MNL
2 stops23h 44mMultiple Airlines
Deal found 4/30$862
This Gotogate deal was found by Cheapflights users on 4/29. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/811:55 pmCEB - ONT
2 stops33h 05mChina Airlines
Thu 8/2112:45 amONT - CEB
1 stop19h 20mChina Airlines
Deal found 4/29$873
This United Airlines deal was found by Cheapflights users on 4/29. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/19:35 amBKK - ONT
2 stops46h 02mUnited Airlines
Sun 9/216:36 pmONT - BKK
2 stops43h 59mUnited Airlines
Deal found 4/29$889
This Vakatrip deal was found by Cheapflights users on 4/30. 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 Vakatrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/1610:50 amBKK - ONT
1 stop21h 10mChina Airlines
Fri 9/2612:10 amONT - BKK
1 stop19h 35mChina Airlines
Deal found 4/30$892
This oojo deal was found by Cheapflights users on 4/29. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/22:40 pmCGK - ONT
1 stop42h 00mChina Airlines
Mon 9/1512:10 amONT - CGK
1 stop23h 25mChina Airlines
Deal found 4/29$896

Cheapflights Fare Finder

Customize your flight search to find flights from Southeast Asia 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 May 1, 2025.
Use the filters below to find and compare flights from Southeast Asia to Ontario that are best for you.

Fly from

Southeast Asia

Fly to

Ontario

Route

Depart

Return

Price

Cebu CityOntario

CEB - ONT

CEBONT

Cebu City Mactan Intl

Sat 6/21

10:50 am-5:05 pm

1 stop21h 15m

Ontario

Sat 8/30

11:45 pm-9:50 am

1 stop19h 05m

$722

ManilaOntario

MNL - ONT

MNLONT

Manila Ninoy Aquino Intl

Tue 6/10

4:50 pm-6:00 pm

1 stop16h 10m

Ontario

Mon 7/21

12:45 am-9:35 am

1 stop17h 50m

$758

Ho Chi Minh CityOntario

SGN - ONT

SGNONT

Ho Chi Minh City

Tue 7/8

6:25 pm-5:40 pm

1 stop37h 15m

Ontario

Mon 7/28

11:45 pm-5:15 pm

1 stop27h 30m

$767

Kuala LumpurOntario

KUL - ONT

KULONT

Kuala Lumpur Intl

Fri 9/12

2:45 pm-6:40 pm

1 stop18h 55m

Ontario

Wed 9/17

12:10 am-1:25 pm

1 stop22h 15m

$775

Ho Chi Minh CityOntario

SGN - ONT

SGNONT

Ho Chi Minh City

Wed 10/1

5:30 pm-6:00 pm

1 stop38h 30m

Ontario

Wed 10/29

11:45 pm-4:50 pm

1 stop27h 05m

$776

Angeles CityOntario

CRK - ONT

CRKONT

Angeles City Clark Intl

Fri 8/8

7:55 pm-5:40 pm

1 stop36h 45m

Ontario

Mon 8/25

11:45 pm-6:55 pm

1 stop28h 10m

$815

SingaporeOntario

SIN - ONT

SINONT

Singapore Changi

Sun 6/22

1:45 pm-6:00 pm

1 stop19h 15m

Ontario

Sat 7/5

12:45 am-12:35 pm

1 stop20h 50m

$827

ManilaOntario

MNL - ONT

MNLONT

Manila Ninoy Aquino Intl

Sat 6/28

4:50 pm-6:00 pm

1 stop16h 10m

Ontario

Sat 7/12

6:51 pm-9:35 am

2 stops23h 44m

$862

BangkokOntario

BKK - ONT

BKKONT

Bangkok Suvarnabhumi

Mon 9/1

9:35 am-5:37 pm

2 stops46h 02m

Ontario

Sun 9/21

6:36 pm-4:35 am

2 stops43h 59m

$889

BangkokOntario

BKK - ONT

BKKONT

Bangkok Suvarnabhumi

Tue 9/16

10:50 am-6:00 pm

1 stop21h 10m

Ontario

Fri 9/26

12:10 am-9:45 am

1 stop19h 35m

$892

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/30

Showing 1-10 of 60 results
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Best time to book a flight from Southeast Asia to Ontario

Have a flexible travel schedule? Discover the best time to fly to Ontario from Southeast Asia 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 Southeast Asia to Ontario

What is the cheapest month to book a flight from Southeast Asia to Ontario?

Currently, August is the cheapest month in which you can book a flight from Southeast Asia to Ontario (average of $246). Flying from Southeast Asia 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 YJX to ONT?

Find hourly flight availability from Southeast Asia 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 May 1, 2025.

When flying from Southeast Asia to Ontario, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

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 May 1, 2025.
Read reviews from past customers who have flown STARLUX Airlines, EVA Air and Korean Air from Southeast Asia to Ontario. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
STARLUX Airlines
9.1
Wonderful
161 reviews

Comfort

9.0

Boarding

9.0

Entertainment

9.0

Food

8.9

Crew

9.3

Overall

9.1

Reviews

1 / 6
10.0
Excellent

Anonymous,Apr 2025

KIX - TPE

Very pleasant experience overall, while the main course of the meal could have been better and the movies could have been more recent and with more variety. They offer blindfolds and earplugs, which are a plus.
STARLUX Airlines
9.1
Wonderful
161 reviews
STARLUX Airlines
9.1
Wonderful
161 reviews

Comfort

9.0

Boarding

9.0

Entertainment

9.0

Food

8.9

Crew

9.3

Overall

9.1

Reviews

1 / 6
10.0
Excellent

Anonymous,Apr 2025

KIX - TPE

Very pleasant experience overall, while the main course of the meal could have been better and the movies could have been more recent and with more variety. They offer blindfolds and earplugs, which are a plus.
EVA Air
8.4
Very good
1,186 reviews
STARLUX Airlines
9.1
Wonderful
161 reviews

Comfort

9.0

Boarding

9.0

Entertainment

9.0

Food

8.9

Crew

9.3

Overall

9.1

Reviews

1 / 6
10.0
Excellent

Anonymous,Apr 2025

KIX - TPE

Very pleasant experience overall, while the main course of the meal could have been better and the movies could have been more recent and with more variety. They offer blindfolds and earplugs, which are a plus.
Korean Air
8.4
Very good
1,068 reviews
STARLUX Airlines
9.1
Wonderful
161 reviews

Comfort

9.0

Boarding

9.0

Entertainment

9.0

Food

8.9

Crew

9.3

Overall

9.1

Reviews

1 / 6
10.0
Excellent

Anonymous,Apr 2025

KIX - TPE

Very pleasant experience overall, while the main course of the meal could have been better and the movies could have been more recent and with more variety. They offer blindfolds and earplugs, which are a plus.
Japan Airlines
8.3
Very good
1,464 reviews
STARLUX Airlines
9.1
Wonderful
161 reviews

Comfort

9.0

Boarding

9.0

Entertainment

9.0

Food

8.9

Crew

9.3

Overall

9.1

Reviews

1 / 6
10.0
Excellent

Anonymous,Apr 2025

KIX - TPE

Very pleasant experience overall, while the main course of the meal could have been better and the movies could have been more recent and with more variety. They offer blindfolds and earplugs, which are a plus.
China Airlines
8.3
Very good
732 reviews
STARLUX Airlines
9.1
Wonderful
161 reviews

Comfort

9.0

Boarding

9.0

Entertainment

9.0

Food

8.9

Crew

9.3

Overall

9.1

Reviews

1 / 6
10.0
Excellent

Anonymous,Apr 2025

KIX - TPE

Very pleasant experience overall, while the main course of the meal could have been better and the movies could have been more recent and with more variety. They offer blindfolds and earplugs, which are a plus.

Related info for your journey

Find useful and relevant information for your journey from Southeast Asia 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 Southeast Asia?

    Located just 3.1 mi from the city center, Ontario (ONT) is the airport most travelers will use when flying to Ontario from Southeast Asia.

  • What are the cheapest airlines to fly from Southeast Asia to Ontario one-way?

    The cheapest airline one-way is STARLUX Airlines, with whom users have recently found tickets for as low as $424. However, be on the lookout for offers from China Airlines and United Airlines, as they are both options that can get you from Southeast Asia to Ontario for a low price.

  • What are the most popular routes from Southeast Asia to Ontario?

    The most popular flight routes from Southeast Asia to Ontario are Manila Ninoy Aquino Intl - Ontario, Bangkok Suvarnabhumi - Ontario and Ho Chi Minh City - Ontario.

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

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

  • How can I find direct flights from Southeast Asia to Ontario?

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

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

    Yes. Cheapflights offers flight deals from Southeast Asia 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 Southeast Asia to Ontario?

    Currently, August is the cheapest month in which you can book a flight from Southeast Asia to Ontario (average of $246). Flying from Southeast Asia 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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Alternative routes for Southeast Asia to Ontario

See prices for flight routes from nearby airports that may be better suited for you.
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Top airline flying from Southeast Asia to Ontario

Discover the top airline that operate flights from Southeast Asia 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 May 1, 2025.
AirlineCheapestAverageFlexibilityOn-time
China AirlinesCheapest$735Average$866FlexibilityNo cancel feeOn-time70%

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