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$302+ Cheap flights from Ontario (ONT) to 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 11/3. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — BKK
Nov 29 — Dec 61
Sat 11/29
Sat 12/6
1 adult, Economy
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Cheap flight deals from Ontario to Asia

Keep the following information in mind while searching for Ontario to Asia flight deals. Data was last updated October 30, 2025.

Most accurate provider

Justfly.com
3 stars

Most trusted provider

Justfly.com
3 stars

Round-trip from

$657
(United Airlines)

One-way from

$302
(United Airlines)

Popular in

December

Cheapest in

September

Average price

$762

Good round-trip deal

$720 or less

Good one-way deal

$412 or less
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From Ontario to Asia
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One-way flight from Ontario to Asia
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Highest demand for flights based on searches. 10% potential increase in price ($109 potential increase over avg. RT price).
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Cheapest flight prices on average. 5% potential price decrease ($48 potential savings vs. average RT price).
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Average for round-trip flights in October 2025
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Price to beat on a round-trip flight from Ontario to Asia.
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Price to beat on a one-way flight from Ontario to Asia.
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Find flight deals from Ontario to Asia

Cheapest flights from Ontario to Asia
Explore the most affordable flight options available from Ontario to Asia. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 30, 2025.

This Trip.com deal was found by Cheapflights users on 10/30. 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.
Mon 11/1010:50 pmONT - MNL
1 stop25h 05mChina Airlines
Mon 11/2410:55 amMNL - ONT
1 stop21h 55mChina Airlines
Deal found 10/30$680
This Kiwi.com deal was found by Cheapflights users on 10/29. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/510:12 pmONT - NRT
1 stop28h 43mMultiple Airlines
Tue 12/162:45 pmNRT - ONT
2 stops23h 32mMultiple Airlines
Deal found 10/29$680
This SmartFares deal was found by Cheapflights users on 10/28. 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 SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/256:45 amONT - MNL
2 stops23h 40mKorean Air
Mon 12/13:10 amMNL - ONT
2 stops29h 58mKorean Air
Deal found 10/28$682
This FlightHub deal was found by Cheapflights users on 10/30. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/310:50 pmONT - MNL
1 stop19h 05mChina Airlines
Wed 11/54:55 pmMNL - ONT
1 stop15h 55mChina Airlines
Deal found 10/30$686
This oojo deal was found by Cheapflights users on 10/29. 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.
Sun 11/1610:50 pmONT - MNL
1 stop25h 05mChina Airlines
Sun 2/1510:55 amMNL - ONT
1 stop21h 55mChina Airlines
Deal found 10/29$687
This Trip.com deal was found by Cheapflights users on 10/28. 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.
Thu 10/3011:50 pmONT - MNL
1 stop19h 05mChina Airlines
Thu 11/134:55 pmMNL - ONT
1 stop15h 55mChina Airlines
Deal found 10/28$688
This Delta deal was found by Cheapflights users on 10/29. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/286:45 amONT - TPE
1 stop22h 20mDelta
Sun 3/110:55 amTPE - ONT
2 stops21h 24mDelta
Deal found 10/29$690
This oojo deal was found by Cheapflights users on 10/28. 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.
Wed 11/1210:50 pmONT - MNL
1 stop19h 05mChina Airlines
Mon 12/84:55 pmMNL - ONT
1 stop15h 55mChina Airlines
Deal found 10/28$691
This Delta deal was found by Cheapflights users on 10/30. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/225:49 pmONT - TPE
1 stop35h 16mDelta
Mon 12/810:55 amTPE - ONT
1 stop22h 12mDelta
Deal found 10/30$691
This oojo deal was found by Cheapflights users on 10/29. 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.
Mon 11/310:50 pmONT - MNL
1 stop25h 05mChina Airlines
Sun 3/294:00 amMNL - ONT
1 stop29h 00mChina Airlines
Deal found 10/29$692
This Delta deal was found by Cheapflights users on 10/29. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/13:45 pmONT - TPE
1 stop38h 20mDelta
Fri 11/2110:55 amTPE - ONT
1 stop16h 13mDelta
Deal found 10/29$692
This FlightHub deal was found by Cheapflights users on 10/30. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/2510:50 pmONT - MNL
1 stop19h 05mChina Airlines
Mon 12/84:55 pmMNL - ONT
1 stop15h 55mChina Airlines
Deal found 10/30$693

Cheapflights Fare Finder

 
Customize your flight search to find flights from Ontario to 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 2,558,603 searches. Data last updated October 30, 2025.
Use the filters below to find and compare flights from Ontario to Asia that are best for you.

Fly from

Ontario

Fly to

Asia

Route

Depart

Return

Price

OntarioTaipei City

ONT - TPE

ONTTPE

Ontario

Thu 11/13

6:45 am-9:05 pm

1 stop22h 20m

Taipei City Taiwan Taoyuan Intl

Sun 11/16

10:55 am-4:09 pm

2 stops21h 14m

$690

OntarioTaipei City

ONT - TPE

ONTTPE

Ontario

Mon 1/19

7:30 am-9:05 pm

1 stop21h 35m

Taipei City Taiwan Taoyuan Intl

Fri 1/23

10:55 am-11:58 pm

2 stops29h 03m

$690

OntarioTaipei City

ONT - TPE

ONTTPE

Ontario

Sat 11/22

5:49 pm-9:05 pm

1 stop35h 16m

Taipei City Taiwan Taoyuan Intl

Mon 12/8

10:55 am-5:07 pm

1 stop22h 12m

$691

OntarioManila

ONT - MNL

ONTMNL

Ontario

Fri 1/9

10:50 pm-3:55 pm

1 stop25h 05m

Manila Ninoy Aquino Intl

Wed 1/28

4:55 pm-4:50 pm

1 stop15h 55m

$695

OntarioTaipei City

ONT - TPE

ONTTPE

Ontario

Sat 11/15

4:49 pm-9:05 pm

2 stops60h 16m

Taipei City Taiwan Taoyuan Intl

Thu 12/4

10:55 am-11:13 am

1 stop16h 18m

$696

OntarioTokyo

ONT - NRT

ONTNRT

Ontario

Wed 2/18

6:00 am-4:00 pm

1 stop17h 00m

Tokyo Narita

Sat 2/28

6:30 pm-6:17 pm

1 stop16h 47m

$698

OntarioTaipei City

ONT - TPE

ONTTPE

Ontario

Fri 1/30

10:50 pm-5:30 am

Nonstop14h 40m

Taipei City Taiwan Taoyuan Intl

Fri 2/20

9:25 pm-4:50 pm

Nonstop11h 25m

$698

OntarioTaipei City

ONT - TPE

ONTTPE

Ontario

Sat 1/31

10:50 pm-5:30 am

Nonstop14h 40m

Taipei City Taiwan Taoyuan Intl

Fri 4/24

9:10 pm-6:00 pm

Nonstop11h 50m

$698

OntarioTaipei City

ONT - TPE

ONTTPE

Ontario

Sat 1/31

10:50 pm-5:30 am

Nonstop14h 40m

Taipei City Taiwan Taoyuan Intl

Sun 4/19

9:10 pm-6:00 pm

Nonstop11h 50m

$698

OntarioTaipei City

ONT - TPE

ONTTPE

Ontario

Fri 1/30

10:50 pm-5:30 am

Nonstop14h 40m

Taipei City Taiwan Taoyuan Intl

Wed 4/22

9:10 pm-6:00 pm

Nonstop11h 50m

$698

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/28

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

Have a flexible travel schedule? Discover the best time to fly to 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.

Cheapflights Insights

Everything you need to know about your flight from Ontario to Asia

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

Currently, October is the cheapest month in which you can book a flight from Ontario to Asia (average of $360). Flying from Ontario to Asia in June is currently the most expensive (average of $534). 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 AS?

Find hourly flight availability from Ontario to Asia. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated October 30, 2025.

Unlike at noon, when flights are generally more expensive, you can save up to 12% on flights from Ontario to Asia by exploring options for tickets in the evening.

What is the cheapest day to fly from Ontario to Asia?

Use this chart to determine the cheapest time to fly round-trip from Ontario to Asia. Price data was last updated on December 16, 2024.

Travelers seeking maximum savings on their Ontario to Asia flight should consider departing on Tuesday afternoons when fares are most often at their lowest. Thursday at noon flights should be avoided if possible as fares are typically the most expensive at this time.

Reviews of airlines servicing Asia

Get insights into the airlines that provide service to 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 Asia. Reviews last updated October 30, 2025.
Read reviews from past customers who have flown STARLUX Airlines, Korean Air, and China Airlines from Ontario to Asia. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
STARLUX Airlines
8.9
Very good
219 reviews

Overall

8.9

Boarding

8.9

Entertainment

8.8

Crew

9.2

Comfort

8.9

Food

8.7

Reviews

1 / 8
10.0
Excellent

Anonymous,Sep 2025

TPE - CRK

Superb service! My second time flying with Starlux to Clark. Will definately fly this route with them again!
STARLUX Airlines
8.9
Very good
219 reviews
STARLUX Airlines
8.9
Very good
219 reviews

Overall

8.9

Boarding

8.9

Entertainment

8.8

Crew

9.2

Comfort

8.9

Food

8.7

Reviews

1 / 8
10.0
Excellent

Anonymous,Sep 2025

TPE - CRK

Superb service! My second time flying with Starlux to Clark. Will definately fly this route with them again!
Korean Air
8.4
Very good
1,155 reviews
STARLUX Airlines
8.9
Very good
219 reviews

Overall

8.9

Boarding

8.9

Entertainment

8.8

Crew

9.2

Comfort

8.9

Food

8.7

Reviews

1 / 8
10.0
Excellent

Anonymous,Sep 2025

TPE - CRK

Superb service! My second time flying with Starlux to Clark. Will definately fly this route with them again!
China Airlines
8.3
Very good
776 reviews
STARLUX Airlines
8.9
Very good
219 reviews

Overall

8.9

Boarding

8.9

Entertainment

8.8

Crew

9.2

Comfort

8.9

Food

8.7

Reviews

1 / 8
10.0
Excellent

Anonymous,Sep 2025

TPE - CRK

Superb service! My second time flying with Starlux to Clark. Will definately fly this route with them again!
Delta
7.9
Good
7,998 reviews
STARLUX Airlines
8.9
Very good
219 reviews

Overall

8.9

Boarding

8.9

Entertainment

8.8

Crew

9.2

Comfort

8.9

Food

8.7

Reviews

1 / 8
10.0
Excellent

Anonymous,Sep 2025

TPE - CRK

Superb service! My second time flying with Starlux to Clark. Will definately fly this route with them again!
United Airlines
7.4
Good
8,995 reviews
STARLUX Airlines
8.9
Very good
219 reviews

Overall

8.9

Boarding

8.9

Entertainment

8.8

Crew

9.2

Comfort

8.9

Food

8.7

Reviews

1 / 8
10.0
Excellent

Anonymous,Sep 2025

TPE - CRK

Superb service! My second time flying with Starlux to Clark. Will definately fly this route with them again!

Related info for your journey

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

    If you book a flight to Asia from Ontario, you will be flying from Ontario, which is the city’s only airport. Ontario (ONT) is located 3.1 mi from the center of Ontario.

  • How long is the flight from Ontario to Asia?

    Delta, China Airlines, and Alaska Airlines can get you from Ontario to Asia in just under 17h. Your travel time can differ by up to 8h 05m. Airlines will cover a distance of 5469 mi. Both multi-stop and nonstop flights can be found to your destination and back.

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

    $302 is the cheapest one-way deal found within the past few days, from United Airlines. You may also be able to find cheap deals on Alaska Airlines and Korean Air, with prices starting from $345 and $353, respectively.

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

    The most popular route from Ontario to Asia is Ontario - Tokyo Narita. You may also consider Ontario - Tokyo Haneda or Ontario - Bangkok Suvarnabhumi.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Ontario to 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 Asia?

    Currently, October is the cheapest month in which you can book a flight from Ontario to Asia (average of $360). Flying from Ontario to Asia in June is currently the most expensive (average of $534). 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.

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Top 10 airlines flying from Ontario to Asia

Discover the top 10 airlines that operate flights from Ontario to 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 2,558,603 searches. Data last updated October 30, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$486Average$1,072FlexibilityNo cancel feeOn-time69%
Asiana AirlinesCheapest$647Average$727FlexibilityNo cancel feeOn-time76%
DeltaCheapest$686Average$1,044FlexibilityNo cancel feeOn-timeN/A
China AirlinesCheapest$688Average$1,094FlexibilityNo cancel feeOn-time70%
Korean AirCheapest$698Average$1,000FlexibilityNo cancel feeOn-time81%
American AirlinesCheapest$712Average$920FlexibilityNo cancel feeOn-time71%
Philippine AirlinesCheapest$767Average$968FlexibilityNo cancel feeOn-time60%
STARLUX AirlinesCheapest$787Average$1,101FlexibilityNo cancel feeOn-timeN/A
Hawaiian AirlinesCheapest$892Average$1,430FlexibilityNo cancel feeOn-time85%
Cathay PacificCheapest$928Average$1,216FlexibilityNo cancel feeOn-time72%

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