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Southeast Asia

$418+ Cheap flights from Ontario (ONT) to Southeast Asia

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 2/13. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — BKK
Nov 20 — Nov 271
1 adult
Wed 11/20
Wed 11/27
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Cheap flight deals from Ontario to Southeast Asia

Discover tips and strategies to find the most affordable flight options for your journey from Ontario (ONT) to Southeast Asia (zzYJX). 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 November 15, 2024.

Find flight deals from Ontario to Southeast Asia

Cheapest flights from Ontario to Southeast Asia
Explore the most affordable flight options available from Ontario to Southeast Asia. Find the lowest fares from popular airlines and budget airlines, with prices last updated on November 15, 2024.

This oojo deal was found by Cheapflights users on 11/14. 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 11/2410:45 pmONT - MNL
1 stop19h 10mChina Airlines
Mon 4/74:45 pmMNL - ONT
1 stop16h 20mChina Airlines
Deal found 11/14$834
This Orbitz deal was found by Cheapflights users on 11/13. 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/188:59 pmONT - SGN
2 stops34h 21mMultiple Airlines
Mon 11/257:50 amSGN - ONT
2 stops24h 39mMultiple Airlines
Deal found 11/13$847
This oojo deal was found by Cheapflights users on 11/14. 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 11/1710:45 pmONT - SGN
1 stop27h 05mChina Airlines
Mon 12/165:50 pmSGN - ONT
1 stop38h 00mChina Airlines
Deal found 11/14$893
This United Airlines deal was found by Cheapflights users on 11/14. 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 11/2610:35 amONT - BKK
2 stops46h 30mUnited Airlines
Wed 12/117:10 amBKK - ONT
2 stops28h 37mUnited Airlines
Deal found 11/14$901
This United Airlines deal was found by Cheapflights users on 11/14. 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 11/186:00 amONT - CEB
2 stops24h 05mUnited Airlines
Thu 11/289:30 amCEB - ONT
2 stops21h 14mUnited Airlines
Deal found 11/14$902
This KAYAK deal was found by Cheapflights users on 11/13. 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.
Thu 12/55:40 amONT - SGN
2 stops26h 40mKorean Air
Wed 2/128:05 amSGN - ONT
2 stops22h 20mKorean Air
Deal found 11/13$903
This IEagle deal was found by Cheapflights users on 11/13. 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 IEagle is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/275:40 amONT - MNL
2 stops27h 25mKorean Air
Wed 12/412:30 pmMNL - ONT
2 stops44h 15mKorean Air
Deal found 11/13$911
This oojo deal was found by Cheapflights users on 11/14. 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 11/1710:45 pmONT - BKK
1 stop20h 05mChina Airlines
Tue 12/245:50 pmBKK - ONT
1 stop38h 00mChina Airlines
Deal found 11/14$925
This Korean Air deal was found by Cheapflights users on 11/14. 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 Korean Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/195:40 amONT - MNL
2 stops37h 20mMultiple Airlines
Sun 11/242:20 amMNL - ONT
2 stops30h 25mMultiple Airlines
Deal found 11/14$927
This United Airlines deal was found by Cheapflights users on 11/13. 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 11/186:00 amONT - KUL
2 stops26h 15mUnited Airlines
Wed 11/202:15 pmKUL - ONT
2 stops43h 28mUnited Airlines
Deal found 11/13$940
This United Airlines deal was found by Cheapflights users on 11/14. 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 11/186:00 amONT - SIN
1 stop22h 15mUnited Airlines
Wed 11/2010:10 amSIN - ONT
1 stop20h 24mUnited Airlines
Deal found 11/14$945
This United deal was found by Cheapflights users on 11/14. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/26:00 amONT - KUL
2 stops26h 15mMultiple Airlines
Tue 12/108:00 amKUL - ONT
2 stops31h 58mMultiple Airlines
Deal found 11/14$955

Find flights from Ontario to Southeast Asia within your budget

Customize your flight search to find flights from Ontario to Southeast Asia 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 2,752,363 searches. Data last updated November 15, 2024.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

OntarioCebu City

ONT - CEB

ONTCEB

Ontario

Sun 5/4

12:10 am-11:05 am

1 stop19h 55m

Cebu City Mactan Intl

Mon 6/2

12:05 pm-6:05 pm

1 stop21h 00m

$770

OntarioManila

ONT - MNL

ONTMNL

Ontario

Tue 2/11

10:45 pm-9:55 am

1 stop19h 10m

Manila Ninoy Aquino Intl

Wed 3/12

4:55 pm-5:50 pm

1 stop15h 55m

$789

OntarioHanoi

ONT - HAN

ONTHAN

Ontario

Thu 2/20

10:45 pm-10:35 am

1 stop20h 50m

Hanoi Noibai

Wed 3/5

11:35 am-4:50 pm

1 stop20h 15m

$825

OntarioHo Chi Minh City

ONT - SGN

ONTSGN

Ontario

Thu 4/17

12:10 am-9:50 am

1 stop19h 40m

Ho Chi Minh City

Mon 6/2

5:45 pm-6:05 pm

1 stop38h 20m

$838

OntarioBangkok

ONT - BKK

ONTBKK

Ontario

Wed 2/12

10:39 am-12:05 am

2 stops46h 26m

Bangkok Suvarnabhumi

Wed 2/26

7:10 am-8:40 pm

2 stops28h 30m

$852

OntarioBangkok

ONT - BKK

ONTBKK

Ontario

Tue 4/29

6:00 am-11:55 pm

2 stops27h 55m

Bangkok Suvarnabhumi

Tue 5/27

7:00 am-3:46 pm

2 stops22h 46m

$854

OntarioBangkok

ONT - BKK

ONTBKK

Ontario

Mon 2/3

6:00 am-9:30 pm

2 stops24h 30m

Bangkok Suvarnabhumi

Sun 2/9

1:00 am-3:25 pm

2 stops29h 25m

$869

OntarioHo Chi Minh City

ONT - SGN

ONTSGN

Ontario

Wed 2/5

6:15 am-10:15 pm

2 stops25h 00m

Ho Chi Minh City

Thu 2/20

7:30 am-6:31 pm

2 stops26h 01m

$870

OntarioBangkok

ONT - BKK

ONTBKK

Ontario

Mon 4/7

12:10 am-9:45 am

1 stop19h 35m

Bangkok Suvarnabhumi

Tue 4/29

2:40 am-6:05 pm

1 stop29h 25m

$876

OntarioBangkok

ONT - BKK

ONTBKK

Ontario

Mon 4/7

5:40 am-11:35 pm

2 stops27h 55m

Bangkok Suvarnabhumi

Wed 4/23

9:50 am-1:13 pm

2 stops41h 23m

$879

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/14

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

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

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

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

Currently, September is the cheapest month in which you can book a flight from Ontario to Southeast Asia (average of $979). Flying from Ontario to Southeast Asia in June is currently the most expensive (average of $1,585). 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 ONT to YJX?

Find hourly flight availability from Ontario to Southeast Asia. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated November 15, 2024.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Ontario to Southeast Asia as you normally would.

Rainfall in Southeast Asia by month

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

In terms of precipitation, rainfall in Southeast Asia ranges from 0.4 - 15.7 inches per month. July is typically the wettest month, when rainfall can reach 15.7 in. February is typically the driest time to visit Southeast Asia when rainfall is around 0.4 in.

Temperature in Southeast Asia by month

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

If weather is an important factor for your trip to Southeast Asia, use this chart to help with planning. For those seeking warmer temperatures, April is the ideal time of year to visit, when temperatures reach an average of 84.2 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 78.8 F).

Reviews of airlines servicing Southeast Asia

Get insights into the airlines that provide service to Southeast Asia. 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 Southeast Asia. Reviews last updated November 15, 2024.
Read reviews from past customers who have flown United Airlines, Korean Air and Delta from Ontario to Southeast Asia. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Korean Air
8.5
Very good
1,036 reviews

Food

8.1

Crew

8.7

Overall

8.5

Boarding

8.5

Entertainment

8.2

Comfort

8.3

Reviews

1 / 10

Ticket counter agent need to be more patient. Food was not good. It was not good like in the past.. Cabin was too hot.

Korean Air
8.5
Very good
1,036 reviews
Korean Air
8.5
Very good
1,036 reviews

Food

8.1

Crew

8.7

Overall

8.5

Boarding

8.5

Entertainment

8.2

Comfort

8.3

Reviews

1 / 10

Ticket counter agent need to be more patient. Food was not good. It was not good like in the past.. Cabin was too hot.

Japan Airlines
8.3
Very good
1,460 reviews
Korean Air
8.5
Very good
1,036 reviews

Food

8.1

Crew

8.7

Overall

8.5

Boarding

8.5

Entertainment

8.2

Comfort

8.3

Reviews

1 / 10

Ticket counter agent need to be more patient. Food was not good. It was not good like in the past.. Cabin was too hot.

China Airlines
8.3
Very good
779 reviews
Korean Air
8.5
Very good
1,036 reviews

Food

8.1

Crew

8.7

Overall

8.5

Boarding

8.5

Entertainment

8.2

Comfort

8.3

Reviews

1 / 10

Ticket counter agent need to be more patient. Food was not good. It was not good like in the past.. Cabin was too hot.

Alaska Airlines
8.0
Very good
9,439 reviews
Korean Air
8.5
Very good
1,036 reviews

Food

8.1

Crew

8.7

Overall

8.5

Boarding

8.5

Entertainment

8.2

Comfort

8.3

Reviews

1 / 10

Ticket counter agent need to be more patient. Food was not good. It was not good like in the past.. Cabin was too hot.

Delta
8.0
Very good
8,788 reviews
Korean Air
8.5
Very good
1,036 reviews

Food

8.1

Crew

8.7

Overall

8.5

Boarding

8.5

Entertainment

8.2

Comfort

8.3

Reviews

1 / 10

Ticket counter agent need to be more patient. Food was not good. It was not good like in the past.. Cabin was too hot.

Related info for your journey

Find useful and relevant information for your journey from Ontario to Southeast Asia. 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 from for flights from Ontario to Southeast Asia?

    For a flight from Ontario to Southeast Asia, you will be flying from Ontario. Ontario (ONT) is just 3.1 mi from the center of the city.

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

    To fly one-way, consider booking your trip with China Airlines, which is currently one of the cheapest options available, starting at $418. Korean Air flights start at $445 while deals on Japan Airlines start at $450 one-way.

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

    When deciding which route to take from Ontario to Southeast Asia consider Ontario - Bangkok Suvarnabhumi, Ontario - Manila Ninoy Aquino Intl or Ontario - Ho Chi Minh City as they are the most popular.

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

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

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

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

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

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

    Currently, September is the cheapest month in which you can book a flight from Ontario to Southeast Asia (average of $979). Flying from Ontario to Southeast Asia in June is currently the most expensive (average of $1,585). 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 Ontario to Southeast Asia

See prices for flight routes from nearby airports that may be better suited for you.
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Top 10 airlines flying from Ontario to Southeast Asia

Discover the top 10 airlines that operate flights from Ontario to Southeast Asia. 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 2,752,363 searches. Data last updated November 15, 2024.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$589Average$939FlexibilityNo cancel feeOn-timeN/A
Korean AirCheapest$597Average$961FlexibilityNo cancel feeOn-time81%
Asiana AirlinesCheapest$684Average$1,009FlexibilityNo cancel feeOn-time76%
Cathay PacificCheapest$710Average$914FlexibilityNo cancel feeOn-time72%
China AirlinesCheapest$748Average$1,067FlexibilityNo cancel feeOn-time70%
EVA AirCheapest$780Average$1,134FlexibilityNo cancel feeOn-time74%
United AirlinesCheapest$795Average$1,609FlexibilityNo cancel feeOn-time69%
Japan AirlinesCheapest$806Average$1,064FlexibilityNo cancel feeOn-time79%
Singapore AirlinesCheapest$817Average$958FlexibilityNo cancel feeOn-time81%
ANACheapest$835Average$884FlexibilityNo cancel feeOn-time80%
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