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Ontario

$475+ 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 6/13. Fares are subject to change and may not be available on all flights or dates of travel.
BKK — ONT
Mar 13 — Mar 201
Thu 3/13
Thu 3/20
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 March 8, 2025.

Round-trip from

$739
(Trip.com)

One-way from

$475
(oojo)
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 March 8, 2025.

This Trip.com deal was found by Cheapflights users on 3/7. 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 4/111:45 pmSIN - ONT
1 stop19h 15mChina Airlines
Wed 4/2312:10 amONT - SIN
1 stop21h 25mChina Airlines
Deal found 3/7$739
This oojo deal was found by Cheapflights users on 3/7. 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.
Thu 3/133:15 amMNL - ONT
1 stop29h 35mChina Airlines
Mon 3/1711:45 pmONT - MNL
1 stop25h 10mChina Airlines
Deal found 3/7$761
This oojo deal was found by Cheapflights users on 3/7. 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.
Thu 3/2012:05 pmCEB - ONT
1 stop20h 45mChina Airlines
Tue 4/1512:10 amONT - CEB
1 stop19h 55mChina Airlines
Deal found 3/7$770
This Booking.com deal was found by Cheapflights users on 3/6. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/2712:15 pmCGK - ONT
1 stop19h 25mSTARLUX Airlines
Mon 10/2011:10 pmONT - CGK
1 stop22h 05mSTARLUX Airlines
Deal found 3/6$787
This Flightnetwork deal was found by Cheapflights users on 3/7. 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.
Sun 4/131:20 pmBKK - ONT
1 stop18h 40mChina Airlines
Fri 4/2512:10 amONT - BKK
1 stop19h 35mChina Airlines
Deal found 3/7$799
This Booking.com deal was found by Cheapflights users on 3/6. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 6/2811:30 amSGN - ONT
1 stop19h 35mSTARLUX Airlines
Sat 7/1211:45 pmONT - SGN
1 stop27h 30mSTARLUX Airlines
Deal found 3/6$817
This oojo deal was found by Cheapflights users on 3/6. 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.
Mon 3/1011:00 amSGN - ONT
1 stop20h 50mChina Airlines
Sun 3/3012:10 amONT - SGN
1 stop26h 10mChina Airlines
Deal found 3/6$818
This Trip.com deal was found by Cheapflights users on 3/7. 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 4/112:45 pmKUL - ONT
1 stop18h 15mChina Airlines
Wed 4/2312:10 amONT - KUL
1 stop22h 15mChina Airlines
Deal found 3/7$821
This United Airlines deal was found by Cheapflights users on 3/5. 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 5/219:35 amBKK - ONT
2 stops40h 39mUnited Airlines
Sun 6/221:36 pmONT - BKK
2 stops48h 59mUnited Airlines
Deal found 3/5$888
This oojo deal was found by Cheapflights users on 3/5. 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.
Fri 6/65:50 pmBKK - ONT
1 stop37h 15mSTARLUX Airlines
Fri 6/2711:10 pmONT - BKK
1 stop27h 30mSTARLUX Airlines
Deal found 3/5$891
This Bravofly deal was found by Cheapflights users on 3/6. 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 Bravofly is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/82:40 pmCGK - ONT
1 stop41h 20mChina Airlines
Tue 5/2012:10 amONT - CGK
1 stop34h 20mChina Airlines
Deal found 3/6$892
This oojo deal was found by Cheapflights users on 3/7. 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.
Sun 6/155:10 pmKUL - ONT
1 stop38h 55mSTARLUX Airlines
Sat 7/1211:45 pmONT - KUL
1 stop25h 25mSTARLUX Airlines
Deal found 3/7$903

Find flights from Southeast Asia to Ontario within your budget

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 March 8, 2025.

Fly from

Southeast Asia

Fly to

Ontario

Route

Depart

Return

Price

SingaporeOntario

SIN - ONT

SINONT

Singapore Changi

Fri 4/11

1:45 pm-6:00 pm

1 stop19h 15m

Ontario

Wed 4/23

12:10 am-12:35 pm

1 stop21h 25m

$739

ManilaOntario

MNL - ONT

MNLONT

Manila Ninoy Aquino Intl

Thu 3/20

10:55 am-5:50 pm

1 stop21h 55m

Ontario

Sun 4/6

12:10 am-3:50 pm

1 stop24h 40m

$761

Cebu CityOntario

CEB - ONT

CEBONT

Cebu City Mactan Intl

Thu 3/20

12:05 pm-5:50 pm

1 stop20h 45m

Ontario

Tue 4/15

12:10 am-11:05 am

1 stop19h 55m

$770

BangkokOntario

BKK - ONT

BKKONT

Bangkok Suvarnabhumi

Sun 4/13

1:20 pm-6:00 pm

1 stop18h 40m

Ontario

Fri 4/25

12:10 am-9:45 am

1 stop19h 35m

$799

Ho Chi Minh CityOntario

SGN - ONT

SGNONT

Ho Chi Minh City

Sat 6/28

11:30 am-5:05 pm

1 stop19h 35m

Ontario

Sat 7/12

11:45 pm-5:15 pm

1 stop27h 30m

$817

Ho Chi Minh CityOntario

SGN - ONT

SGNONT

Ho Chi Minh City

Sat 4/12

5:30 pm-6:00 pm

1 stop38h 30m

Ontario

Sun 5/18

12:10 am-9:40 am

1 stop19h 30m

$818

Kuala LumpurOntario

KUL - ONT

KULONT

Kuala Lumpur Intl

Fri 4/11

2:45 pm-6:00 pm

1 stop18h 15m

Ontario

Wed 4/23

12:10 am-1:25 pm

1 stop22h 15m

$821

BangkokOntario

BKK - ONT

BKKONT

Bangkok Suvarnabhumi

Wed 5/21

9:35 am-12:14 pm

2 stops40h 39m

Ontario

Sun 6/22

1:36 pm-4:35 am

2 stops48h 59m

$888

BangkokOntario

BKK - ONT

BKKONT

Bangkok Suvarnabhumi

Fri 6/6

5:50 pm-5:05 pm

1 stop37h 15m

Ontario

Fri 6/27

11:10 pm-4:40 pm

1 stop27h 30m

$891

Kuala LumpurOntario

KUL - ONT

KULONT

Kuala Lumpur Intl

Sun 6/15

5:10 pm-5:05 pm

1 stop38h 55m

Ontario

Sat 7/12

11:45 pm-4:10 pm

1 stop25h 25m

$903

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/6

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.

Travel insights for flights from Southeast Asia to Ontario

Get recent, data-driven insights about flights from Southeast Asia to Ontario including ideal travel times, pricing trends, and more.

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 $313). 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 March 8, 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 March 8, 2025.
Read reviews from past customers who have flown STARLUX Airlines, Korean Air and Japan Airlines 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
141 reviews

Boarding

9.1

Comfort

9.0

Entertainment

9.1

Overall

9.1

Food

9.0

Crew

9.3

Reviews

1 / 5

10.0
Excellent

Andrew,Jan 2025

LAX - TPE

Crew were attentive from start to finish. Each meal was amazing. IFE screen was huge and had quite a bit of western movies, however the tv shows were lacking.

STARLUX Airlines
9.1
Wonderful
141 reviews
STARLUX Airlines
9.1
Wonderful
141 reviews

Boarding

9.1

Comfort

9.0

Entertainment

9.1

Overall

9.1

Food

9.0

Crew

9.3

Reviews

1 / 5

10.0
Excellent

Andrew,Jan 2025

LAX - TPE

Crew were attentive from start to finish. Each meal was amazing. IFE screen was huge and had quite a bit of western movies, however the tv shows were lacking.

Korean Air
8.4
Very good
1,039 reviews
STARLUX Airlines
9.1
Wonderful
141 reviews

Boarding

9.1

Comfort

9.0

Entertainment

9.1

Overall

9.1

Food

9.0

Crew

9.3

Reviews

1 / 5

10.0
Excellent

Andrew,Jan 2025

LAX - TPE

Crew were attentive from start to finish. Each meal was amazing. IFE screen was huge and had quite a bit of western movies, however the tv shows were lacking.

Japan Airlines
8.3
Very good
1,439 reviews
STARLUX Airlines
9.1
Wonderful
141 reviews

Boarding

9.1

Comfort

9.0

Entertainment

9.1

Overall

9.1

Food

9.0

Crew

9.3

Reviews

1 / 5

10.0
Excellent

Andrew,Jan 2025

LAX - TPE

Crew were attentive from start to finish. Each meal was amazing. IFE screen was huge and had quite a bit of western movies, however the tv shows were lacking.

China Airlines
8.2
Very good
724 reviews
STARLUX Airlines
9.1
Wonderful
141 reviews

Boarding

9.1

Comfort

9.0

Entertainment

9.1

Overall

9.1

Food

9.0

Crew

9.3

Reviews

1 / 5

10.0
Excellent

Andrew,Jan 2025

LAX - TPE

Crew were attentive from start to finish. Each meal was amazing. IFE screen was huge and had quite a bit of western movies, however the tv shows were lacking.

Delta
8.0
Very good
8,024 reviews
STARLUX Airlines
9.1
Wonderful
141 reviews

Boarding

9.1

Comfort

9.0

Entertainment

9.1

Overall

9.1

Food

9.0

Crew

9.3

Reviews

1 / 5

10.0
Excellent

Andrew,Jan 2025

LAX - TPE

Crew were attentive from start to finish. Each meal was amazing. IFE screen was huge and had quite a bit of western movies, however the tv shows were lacking.

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 $475. 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 $313). 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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Singapore to Los Angeles flights
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Gimpo Intl to San Francisco flights

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 March 8, 2025.
AirlineCheapestAverageFlexibilityOn-time
China AirlinesCheapest$736Average$931FlexibilityNo cancel feeOn-time70%
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