Asia

$311+ 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 1/6. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — BKK
ene. 27 — feb. 31
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Cheap 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 diciembre 28, 2025.

This Delta deal was found by Cheapflights users on 12/27. 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.
mié. 12/316:00 amONT - TPE
2 stops47h 05mDelta
sáb. 4/189:35 amTPE - ONT
1 stop16h 38mDelta
Deal found 12/27$684
This Delta deal was found by Cheapflights users on 12/27. 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.
mié. 12/316:00 amONT - TPE
2 stops47h 05mDelta
dom. 4/199:35 amTPE - ONT
2 stops53h 09mDelta
Deal found 12/27$696
This United Airlines deal was found by Cheapflights users on 12/27. 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.
mié. 12/3110:42 amONT - SGN
2 stops45h 13mUnited Airlines
lun. 6/157:00 amSGN - ONT
2 stops30h 06mUnited Airlines
Deal found 12/27$731
This United Airlines deal was found by Cheapflights users on 12/26. 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.
dom. 12/286:39 pmONT - SGN
2 stops37h 16mUnited Airlines
dom. 2/156:00 amSGN - ONT
2 stops31h 57mUnited Airlines
Deal found 12/26$753
This Delta deal was found by Cheapflights users on 12/27. 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.
mié. 12/312:50 pmONT - TPE
1 stop38h 15mDelta
jue. 4/239:35 amTPE - ONT
1 stop16h 38mDelta
Deal found 12/27$761
This Delta deal was found by Cheapflights users on 12/27. 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.
mar. 12/305:10 pmONT - TPE
2 stops59h 55mDelta
sáb. 4/189:35 amTPE - ONT
1 stop16h 38mDelta
Deal found 12/27$771
This United Airlines deal was found by Cheapflights users on 12/26. 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.
mar. 12/306:39 pmONT - MNL
1 stop20h 11mUnited Airlines
mar. 1/69:55 amMNL - ONT
1 stop18h 22mUnited Airlines
Deal found 12/26$781
This Delta deal was found by Cheapflights users on 12/27. 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.
lun. 12/296:38 amONT - TPE
1 stop22h 27mDelta
sáb. 4/189:35 amTPE - ONT
1 stop16h 38mDelta
Deal found 12/27$789
This Korean Air deal was found by Cheapflights users on 12/28. 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 Korean Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 12/306:38 amONT - SGN
2 stops25h 42mMultiple Airlines
mar. 2/38:00 amSGN - ONT
2 stops20h 56mMultiple Airlines
Deal found 12/28$792
This Korean Air deal was found by Cheapflights users on 12/26. 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.
sáb. 12/276:38 amONT - BKK
2 stops27h 17mKorean Air
jue. 1/292:05 amBKK - ONT
2 stops26h 51mKorean Air
Deal found 12/26$794
This Delta deal was found by Cheapflights users on 12/27. 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.
lun. 12/2911:42 amONT - TPE
1 stop17h 23mDelta
mié. 4/226:55 pmTPE - ONT
2 stops42h 42mDelta
Deal found 12/27$796
This Delta deal was found by Cheapflights users on 12/27. 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.
dom. 12/285:49 pmONT - TPE
1 stop35h 16mDelta
lun. 4/209:35 amTPE - ONT
1 stop22h 40mDelta
Deal found 12/27$797

Find flight deals from Ontario to Asia

Keep the following information in mind while searching for Ontario to Asia flight deals. Data was last updated diciembre 28, 2025.

Most accurate provider

Justfly.com
3 stars

Most trusted provider

Justfly.com
3 stars

Round-trip from

$596
(SmartFares)

One-way from

$311
(SmartFares)

Popular in

December

Cheapest in

September

Average price

$1,348

Good round-trip deal

$689 or less

Good one-way deal

$411 or less
Provider with most accurate pricing for Los Angeles-Manila Ninoy Aquino Intl flight deals.
Provider most trusted by Cheapflights users for Los Angeles-Manila Ninoy Aquino Intl flights.
From Ontario to Asia
One-way flight from Ontario to Asia
Highest demand for flights based on searches. 7% potential increase in price ($70 potential increase over avg. RT price).
Cheapest flight prices on average. 4% potential price decrease ($40 potential savings vs. average RT price).
Average for round-trip flights in December 2025
Price to beat on a round-trip flight from Ontario to Asia.
Price to beat on a one-way flight from Ontario to Asia.

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 diciembre 28, 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

jue. 1/29

6:30 pm-3:08 pm

1 stop13h 38m

$636

OntarioTaipei City

ONT - TPE

ONTTPE

Ontario

lun. 4/20

7:30 am-7:55 pm

1 stop21h 25m

Taipei City Taiwan Taoyuan Intl

mié. 4/29

9:35 am-5:15 pm

1 stop22h 40m

$667

OntarioTaipei City

ONT - TPE

ONTTPE

Ontario

lun. 4/20

7:30 am-7:55 pm

1 stop21h 25m

Taipei City Taiwan Taoyuan Intl

lun. 4/27

9:35 am-11:13 am

1 stop16h 38m

$667

OntarioTaipei City

ONT - TPE

ONTTPE

Ontario

jue. 4/23

7:30 am-7:55 pm

1 stop21h 25m

Taipei City Taiwan Taoyuan Intl

vie. 5/1

9:35 am-11:13 am

1 stop16h 38m

$667

OntarioTaipei City

ONT - TPE

ONTTPE

Ontario

sáb. 5/2

7:30 am-7:55 pm

1 stop21h 25m

Taipei City Taiwan Taoyuan Intl

sáb. 5/9

9:35 am-11:14 am

1 stop16h 39m

$667

OntarioTaipei City

ONT - TPE

ONTTPE

Ontario

vie. 4/17

6:00 am-7:55 pm

2 stops22h 55m

Taipei City Taiwan Taoyuan Intl

jue. 4/30

9:35 am-11:44 pm

2 stops29h 09m

$672

OntarioTaipei City

ONT - TPE

ONTTPE

Ontario

sáb. 4/18

6:00 am-7:55 pm

2 stops22h 55m

Taipei City Taiwan Taoyuan Intl

jue. 4/30

9:35 am-11:13 am

1 stop16h 38m

$672

OntarioTokyo

ONT - NRT

ONTNRT

Ontario

jue. 1/29

6:00 am-4:00 pm

1 stop17h 00m

Tokyo Narita

jue. 2/5

6:30 pm-3:08 pm

1 stop13h 38m

$674

OntarioTokyo

ONT - NRT

ONTNRT

Ontario

vie. 1/23

6:00 am-4:00 pm

1 stop17h 00m

Tokyo Narita

jue. 2/26

6:30 pm-3:08 pm

1 stop13h 38m

$674

OntarioTaipei City

ONT - TPE

ONTTPE

Ontario

mié. 4/22

7:30 am-5:50 pm

2 stops43h 20m

Taipei City Taiwan Taoyuan Intl

jue. 4/30

6:55 pm-5:15 pm

2 stops37h 20m

$686

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/26

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, February is the cheapest month in which you can book a flight from Ontario to Asia (average of $354). Flying from Ontario to Asia in June is currently the most expensive (average of $531). 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 diciembre 28, 2025.

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

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 diciembre 28, 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.

Boarding

8.9

Food

8.6

Comfort

8.8

Overall

8.9

Crew

9.1

Entertainment

8.8

Reviews

1 / 9
10.0
Excellent

Chad,Nov 2025

TPE - SEA

Starlux Airlines was amazing. No complaints on anything with them

Boarding

8.9

Food

8.6

Comfort

8.8

Overall

8.9

Crew

9.1

Entertainment

8.8

Reviews

1 / 9
10.0
Excellent

Chad,Nov 2025

TPE - SEA

Starlux Airlines was amazing. No complaints on anything with them

Boarding

8.9

Food

8.6

Comfort

8.8

Overall

8.9

Crew

9.1

Entertainment

8.8

Reviews

1 / 9
10.0
Excellent

Chad,Nov 2025

TPE - SEA

Starlux Airlines was amazing. No complaints on anything with them

Boarding

8.9

Food

8.6

Comfort

8.8

Overall

8.9

Crew

9.1

Entertainment

8.8

Reviews

1 / 9
10.0
Excellent

Chad,Nov 2025

TPE - SEA

Starlux Airlines was amazing. No complaints on anything with them

Boarding

8.9

Food

8.6

Comfort

8.8

Overall

8.9

Crew

9.1

Entertainment

8.8

Reviews

1 / 9
10.0
Excellent

Chad,Nov 2025

TPE - SEA

Starlux Airlines was amazing. No complaints on anything with them

Boarding

8.9

Food

8.6

Comfort

8.8

Overall

8.9

Crew

9.1

Entertainment

8.8

Reviews

1 / 9
10.0
Excellent

Chad,Nov 2025

TPE - SEA

Starlux Airlines was amazing. No complaints on anything with them

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, United Airlines, and China Airlines can get you from Ontario to Asia in just under 21h 25m. Your travel time can differ by up to 6h 50m. Airlines will cover a distance of 6814 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?

    $342 is the cheapest one-way deal found within the past few days, from Delta. You may also be able to find cheap deals on Alaska Airlines and Korean Air, with prices starting from $356 and $363, respectively.

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

  • 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, February is the cheapest month in which you can book a flight from Ontario to Asia (average of $354). Flying from Ontario to Asia in June is currently the most expensive (average of $531). 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 Asia

See prices for flight routes from nearby airports that may be better suited for you.

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 diciembre 28, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$486Average$1,039FlexibilityNo cancel feeOn-time69%
Korean AirCheapest$637Average$953FlexibilityNo cancel feeOn-time81%
Asiana AirlinesCheapest$647Average$728FlexibilityNo cancel feeOn-time76%
China AirlinesCheapest$648Average$984FlexibilityNo cancel feeOn-time70%
DeltaCheapest$655Average$948FlexibilityNo cancel feeOn-timeN/A
STARLUX AirlinesCheapest$656Average$1,168FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$712Average$974FlexibilityNo cancel feeOn-time71%
Philippine AirlinesCheapest$754Average$956FlexibilityNo cancel feeOn-time60%
Hawaiian AirlinesCheapest$892Average$1,437FlexibilityNo cancel feeOn-time85%
Cathay PacificCheapest$928Average$1,216FlexibilityNo cancel feeOn-time72%

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