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$250+ 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 12/9. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — BKK
dic. 12 — dic. 191
vie. 12/12
vie. 12/19
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 noviembre 12, 2025.

Most accurate provider

Justfly.com
3 stars

Most trusted provider

Justfly.com
3 stars

Round-trip from

$351
(Alaska Airlines)

One-way from

$250
(Cheapflightsfares)

Popular in

December

Cheapest in

September

Average price

$785

Good round-trip deal

$709 or less

Good one-way deal

$420 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. 8% potential increase in price ($89 potential increase over avg. RT price).
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Cheapest flight prices on average. 5% potential price decrease ($44 potential savings vs. average RT price).
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Average for round-trip flights in November 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 noviembre 12, 2025.

This Alaska Airlines deal was found by Cheapflights users on 11/10. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 12/87:00 amONT - HND
1 stop17h 10mAlaska Airlines
mié. 12/178:05 pmHND - ONT
1 stop18h 38mAlaska Airlines
Deal found 11/10$537
This Alaska Airlines deal was found by Cheapflights users on 11/10. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 12/97:00 amONT - HND
1 stop17h 10mAlaska Airlines
mié. 12/179:20 pmHND - ONT
1 stop17h 23mAlaska Airlines
Deal found 11/10$545
This Alaska Airlines deal was found by Cheapflights users on 11/12. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 11/287:50 amONT - HND
1 stop18h 40mAlaska Airlines
vie. 12/58:05 pmHND - ONT
1 stop17h 18mAlaska Airlines
Deal found 11/12$592
This Alaska Airlines deal was found by Cheapflights users on 11/10. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 12/97:00 amONT - HND
1 stop19h 30mAlaska Airlines
jue. 12/188:05 pmHND - ONT
1 stop19h 03mAlaska Airlines
Deal found 11/10$600
This Alaska Airlines deal was found by Cheapflights users on 11/10. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 12/87:00 amONT - HND
1 stop17h 10mAlaska Airlines
mar. 12/169:20 pmHND - ONT
1 stop17h 23mAlaska Airlines
Deal found 11/10$619
This Alaska Airlines deal was found by Cheapflights users on 11/10. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 12/107:00 amONT - HND
1 stop19h 30mAlaska Airlines
jue. 12/188:05 pmHND - ONT
1 stop19h 03mAlaska Airlines
Deal found 11/10$625
This Alaska Airlines deal was found by Cheapflights users on 11/10. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 12/97:00 amONT - HND
1 stop19h 30mAlaska Airlines
vie. 12/198:05 pmHND - ONT
1 stop19h 03mAlaska Airlines
Deal found 11/10$636
This Alaska Airlines deal was found by Cheapflights users on 11/10. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 12/87:00 amONT - HND
1 stop19h 30mAlaska Airlines
vie. 12/198:05 pmHND - ONT
1 stop19h 03mAlaska Airlines
Deal found 11/10$661
This CheapOair deal was found by Cheapflights users on 11/11. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 11/2910:50 pmONT - MNL
1 stop35h 40mChina Airlines
dom. 12/144:55 pmMNL - ONT
1 stop15h 55mChina Airlines
Deal found 11/11$665
This Mytrip deal was found by Cheapflights users on 11/12. 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.
lun. 11/2410:50 pmONT - MNL
1 stop25h 05mChina Airlines
lun. 12/83:35 amMNL - ONT
1 stop29h 15mChina Airlines
Deal found 11/12$672
This FlightHub deal was found by Cheapflights users on 11/9. 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.
jue. 11/2710:50 pmONT - TPE
Nonstop14h 40mChina Airlines
mié. 12/39:25 pmTPE - ONT
Nonstop11h 25mChina Airlines
Deal found 11/9$673
This SmartFares deal was found by Cheapflights users on 11/10. 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.
mar. 11/2510:50 pmONT - TPE
Nonstop14h 40mChina Airlines
mar. 12/29:25 pmTPE - ONT
Nonstop11h 25mChina Airlines
Deal found 11/10$674

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 noviembre 12, 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

OntarioTokyo

ONT - NRT

ONTNRT

Ontario

dom. 1/18

6:00 am-4:00 pm

1 stop17h 00m

Tokyo Narita

mar. 2/3

6:30 pm-8:36 pm

1 stop19h 06m

$636

OntarioNew Delhi

ONT - DEL

ONTDEL

Ontario

mar. 3/31

5:10 am-9:30 pm

2 stops27h 50m

New Delhi Indira Gandhi Intl

mar. 5/5

11:35 pm-9:21 pm

2 stops34h 16m

$657

OntarioTokyo

ONT - HND

ONTHND

Ontario

dom. 2/1

8:13 am-5:10 pm

1 stop39h 57m

Tokyo Haneda

vie. 2/13

8:05 pm-10:15 pm

1 stop19h 10m

$678

OntarioTokyo

ONT - NRT

ONTNRT

Ontario

dom. 2/8

6:00 am-4:00 pm

1 stop17h 00m

Tokyo Narita

mar. 2/24

6:30 pm-3:08 pm

1 stop13h 38m

$686

OntarioTokyo

ONT - HND

ONTHND

Ontario

mar. 1/6

5:03 pm-2:05 pm

2 stops28h 02m

Tokyo Haneda

mar. 1/20

4:50 pm-4:13 pm

2 stops16h 23m

$691

OntarioTokyo

ONT - HND

ONTHND

Ontario

sáb. 1/17

3:30 pm-2:05 pm

1 stop29h 35m

Tokyo Haneda

mié. 1/28

4:50 pm-1:56 pm

1 stop14h 06m

$692

OntarioTaipei City

ONT - TPE

ONTTPE

Ontario

jue. 4/16

12:10 am-5:15 am

Nonstop14h 05m

Taipei City Taiwan Taoyuan Intl

jue. 4/23

9:10 pm-6:00 pm

Nonstop11h 50m

$699

OntarioTaipei City

ONT - TPE

ONTTPE

Ontario

lun. 4/13

12:10 am-5:15 am

Nonstop14h 05m

Taipei City Taiwan Taoyuan Intl

mar. 4/28

9:10 pm-6:00 pm

Nonstop11h 50m

$699

OntarioTaipei City

ONT - TPE

ONTTPE

Ontario

lun. 4/13

12:10 am-5:15 am

Nonstop14h 05m

Taipei City Taiwan Taoyuan Intl

jue. 4/23

9:10 pm-6:00 pm

Nonstop11h 50m

$699

OntarioTaipei City

ONT - TPE

ONTTPE

Ontario

vie. 3/6

10:50 pm-5:30 am

Nonstop14h 40m

Taipei City Taiwan Taoyuan Intl

dom. 3/15

9:25 pm-5:50 pm

Nonstop11h 25m

$699

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/11

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 $361). 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 noviembre 12, 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 noviembre 12, 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
227 reviews

Boarding

8.9

Crew

9.2

Comfort

8.9

Entertainment

8.8

Food

8.7

Overall

8.9

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
227 reviews
STARLUX Airlines
8.9
Very good
227 reviews

Boarding

8.9

Crew

9.2

Comfort

8.9

Entertainment

8.8

Food

8.7

Overall

8.9

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
1,163 reviews
STARLUX Airlines
8.9
Very good
227 reviews

Boarding

8.9

Crew

9.2

Comfort

8.9

Entertainment

8.8

Food

8.7

Overall

8.9

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
778 reviews
STARLUX Airlines
8.9
Very good
227 reviews

Boarding

8.9

Crew

9.2

Comfort

8.9

Entertainment

8.8

Food

8.7

Overall

8.9

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
8,011 reviews
STARLUX Airlines
8.9
Very good
227 reviews

Boarding

8.9

Crew

9.2

Comfort

8.9

Entertainment

8.8

Food

8.7

Overall

8.9

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
9,016 reviews
STARLUX Airlines
8.9
Very good
227 reviews

Boarding

8.9

Crew

9.2

Comfort

8.9

Entertainment

8.8

Food

8.7

Overall

8.9

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?

    Alaska Airlines, United Airlines, and Delta can get you from Ontario to Asia in just under 17h. Your travel time can differ by up to 11h 02m. 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?

    $300 is the cheapest one-way deal found within the past few days, from Alaska Airlines. You may also be able to find cheap deals on Delta and China Airlines, with prices starting from $341 and $375, 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 $361). 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 noviembre 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$486Average$1,071FlexibilityNo cancel feeOn-time69%
Asiana AirlinesCheapest$647Average$727FlexibilityNo cancel feeOn-time76%
China AirlinesCheapest$683Average$1,088FlexibilityNo cancel feeOn-time70%
DeltaCheapest$686Average$1,044FlexibilityNo cancel feeOn-timeN/A
Korean AirCheapest$698Average$993FlexibilityNo 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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