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$305+ 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 4/20. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — BKK
Feb 28 — Mar 71
Sat 2/28
Sat 3/7
1 adult, Economy
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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 January 29, 2026.

This SmartFares deal was found by Cheapflights users on 1/28. 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.
Wed 2/186:14 am
ONT
-
NRT
1 stop16h 46m
Hawaiian Airlines
Wed 2/256:30 pm
NRT
-
ONT
1 stop21h 14m
Hawaiian Airlines
Deal found 1/28$635
This SmartFares deal was found by Cheapflights users on 1/26. 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 SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/186:14 am
ONT
-
NRT
1 stop16h 46m
Hawaiian Airlines
Wed 3/46:30 pm
NRT
-
ONT
1 stop13h 38m
Hawaiian Airlines
Deal found 1/26$641
This SmartFares deal was found by Cheapflights users on 1/26. 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 SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/36:14 am
ONT
-
NRT
1 stop16h 46m
Hawaiian Airlines
Wed 3/186:30 pm
NRT
-
ONT
1 stop21h 29m
Hawaiian Airlines
Deal found 1/26$652
This SmartFares deal was found by Cheapflights users on 1/28. 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 2/244:02 pm
ONT
-
NRT
1 stop30h 58m
Hawaiian Airlines
Fri 3/66:30 pm
NRT
-
ONT
1 stop13h 38m
Hawaiian Airlines
Deal found 1/28$655
This Ticket deal was found by Cheapflights users on 1/27. 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 Ticket is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/212:02 pm
ONT
-
NRT
1 stop34h 58m
Hawaiian Airlines
Tue 3/176:30 pm
NRT
-
ONT
1 stop20h 14m
Hawaiian Airlines
Deal found 1/27$671
This Delta deal was found by Cheapflights users on 1/29. 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.
Sun 4/126:00 am
ONT
-
TPE
2 stops22h 55m
Delta
Thu 4/309:35 am
TPE
-
ONT
2 stops29h 09m
Delta
Deal found 1/29$673
This SmartFares deal was found by Cheapflights users on 1/28. 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 10/2012:10 am
ONT
-
TPE
Nonstop14h 05m
China Airlines
Wed 10/289:25 pm
TPE
-
ONT
Nonstop11h 25m
China Airlines
Deal found 1/28$674
This SmartFares deal was found by Cheapflights users on 1/28. 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.
Thu 3/56:14 am
ONT
-
NRT
1 stop16h 46m
Hawaiian Airlines
Thu 3/196:30 pm
NRT
-
ONT
1 stop21h 29m
Hawaiian Airlines
Deal found 1/28$674
This Delta deal was found by Cheapflights users on 1/29. 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 2/73:30 pm
ONT
-
TPE
1 stop37h 35m
Delta
Fri 3/610:55 am
TPE
-
ONT
1 stop18h 59m
Delta
Deal found 1/29$675
This SmartFares deal was found by Cheapflights users on 1/27. 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 SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/2312:10 am
ONT
-
MNL
1 stop18h 25m
China Airlines
Thu 10/224:50 pm
MNL
-
ONT
1 stop16h 10m
China Airlines
Deal found 1/27$676
This SmartFares deal was found by Cheapflights users on 1/28. 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.
Sun 8/306:00 am
ONT
-
NRT
1 stop18h 00m
Multiple Airlines
Fri 9/116:00 pm
NRT
-
ONT
1 stop16h 13m
Multiple Airlines
Deal found 1/28$677
This CrystalTravel deal was found by Cheapflights users on 1/28. 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 CrystalTravel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/2112:10 am
ONT
-
MNL
1 stop18h 25m
China Airlines
Tue 12/2210:55 am
MNL
-
ONT
1 stop21h 55m
China Airlines
Deal found 1/28$678

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 January 29, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$635
(SmartFares)

One-way from

$305
(iWofly)

Popular in

December

Cheapest in

September

Average price

$805

Good round-trip deal

$706 or less

Good one-way deal

$417 or less
Provider with most accurate pricing for Los Angeles-Manila Ninoy Aquino Intl flight deals.
Search Deals
Provider most trusted by Cheapflights users for Los Angeles-Manila Ninoy Aquino Intl flights.
Search Deals
From Ontario to Asia
Search Deals
One-way flight from Ontario to Asia
Search Deals
Highest demand for flights based on searches. 6% potential increase in price ($58 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($38 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in January 2026
Search Deals
Price to beat on a round-trip flight from Ontario to Asia.
Search Deals
Price to beat on a one-way flight from Ontario to Asia.
Search Deals

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 January 29, 2026.
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

Tue 2/24

6:00 am-9:05 pm

2 stops23h 05m

Taipei City Taiwan Taoyuan Intl

Tue 3/3

10:55 am-4:02 pm

2 stops21h 07m

$673

OntarioTaipei City

ONT - TPE

ONTTPE

Ontario

Wed 4/1

6:00 am-7:55 pm

2 stops22h 55m

Taipei City Taiwan Taoyuan Intl

Wed 6/3

9:35 am-12:29 pm

2 stops17h 54m

$673

OntarioTaipei City

ONT - TPE

ONTTPE

Ontario

Fri 4/17

7:00 am-7:55 pm

1 stop21h 55m

Taipei City Taiwan Taoyuan Intl

Fri 4/24

9:35 am-11:44 pm

2 stops29h 09m

$673

OntarioTaipei City

ONT - TPE

ONTTPE

Ontario

Tue 3/31

6:00 am-7:55 pm

1 stop22h 55m

Taipei City Taiwan Taoyuan Intl

Fri 4/24

9:35 am-11:44 pm

2 stops29h 09m

$673

OntarioTaipei City

ONT - TPE

ONTTPE

Ontario

Mon 5/11

7:00 am-7:55 pm

1 stop21h 55m

Taipei City Taiwan Taoyuan Intl

Sun 5/24

9:35 am-9:44 pm

2 stops27h 09m

$673

OntarioTaipei City

ONT - TPE

ONTTPE

Ontario

Sat 4/11

5:45 pm-7:55 pm

2 stops35h 10m

Taipei City Taiwan Taoyuan Intl

Fri 4/24

9:35 am-11:44 pm

2 stops29h 09m

$673

OntarioTaipei City

ONT - TPE

ONTTPE

Ontario

Sun 4/12

6:00 am-7:55 pm

2 stops22h 55m

Taipei City Taiwan Taoyuan Intl

Fri 5/1

9:35 am-4:25 pm

2 stops21h 50m

$673

OntarioManila

ONT - MNL

ONTMNL

Ontario

Tue 5/5

7:00 am-11:59 pm

2 stops25h 59m

Manila Ninoy Aquino Intl

Mon 8/31

11:30 pm-5:16 pm

2 stops32h 46m

$707

OntarioTaipei City

ONT - TPE

ONTTPE

Ontario

Wed 4/22

12:10 am-5:15 am

Nonstop14h 05m

Taipei City Taiwan Taoyuan Intl

Wed 5/6

9:10 pm-6:00 pm

Nonstop11h 50m

$709

OntarioTaipei City

ONT - TPE

ONTTPE

Ontario

Tue 4/21

12:10 am-5:15 am

Nonstop14h 05m

Taipei City Taiwan Taoyuan Intl

Fri 5/8

9:10 pm-6:00 pm

Nonstop11h 50m

$709

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/28

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, February is the cheapest month in which you can book a flight from Ontario to Asia (average of $351). Flying from Ontario to Asia in June is currently the most expensive (average of $528). 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 January 29, 2026.

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 January 29, 2026.
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
268 reviews

Comfort

8.8

Crew

9.1

Boarding

8.9

Entertainment

8.8

Overall

8.9

Food

8.6

Reviews

1 / 10
10.0
Excellent

Anonymous,Jan 2026

SEA - TPE

First time travelled with starlux and had best experience. Food was really good and crew is the best. Entertainment was also best. Having latest movies. I requested for isle seat at the last time and they provided me. Best airline service.
STARLUX Airlines
8.9
Very good
268 reviews
STARLUX Airlines
8.9
Very good
268 reviews

Comfort

8.8

Crew

9.1

Boarding

8.9

Entertainment

8.8

Overall

8.9

Food

8.6

Reviews

1 / 10
10.0
Excellent

Anonymous,Jan 2026

SEA - TPE

First time travelled with starlux and had best experience. Food was really good and crew is the best. Entertainment was also best. Having latest movies. I requested for isle seat at the last time and they provided me. Best airline service.
Korean Air
8.4
Very good
1,188 reviews
STARLUX Airlines
8.9
Very good
268 reviews

Comfort

8.8

Crew

9.1

Boarding

8.9

Entertainment

8.8

Overall

8.9

Food

8.6

Reviews

1 / 10
10.0
Excellent

Anonymous,Jan 2026

SEA - TPE

First time travelled with starlux and had best experience. Food was really good and crew is the best. Entertainment was also best. Having latest movies. I requested for isle seat at the last time and they provided me. Best airline service.
China Airlines
8.3
Very good
802 reviews
STARLUX Airlines
8.9
Very good
268 reviews

Comfort

8.8

Crew

9.1

Boarding

8.9

Entertainment

8.8

Overall

8.9

Food

8.6

Reviews

1 / 10
10.0
Excellent

Anonymous,Jan 2026

SEA - TPE

First time travelled with starlux and had best experience. Food was really good and crew is the best. Entertainment was also best. Having latest movies. I requested for isle seat at the last time and they provided me. Best airline service.
Delta
7.9
Good
8,125 reviews
STARLUX Airlines
8.9
Very good
268 reviews

Comfort

8.8

Crew

9.1

Boarding

8.9

Entertainment

8.8

Overall

8.9

Food

8.6

Reviews

1 / 10
10.0
Excellent

Anonymous,Jan 2026

SEA - TPE

First time travelled with starlux and had best experience. Food was really good and crew is the best. Entertainment was also best. Having latest movies. I requested for isle seat at the last time and they provided me. Best airline service.
United Airlines
7.4
Good
9,215 reviews
STARLUX Airlines
8.9
Very good
268 reviews

Comfort

8.8

Crew

9.1

Boarding

8.9

Entertainment

8.8

Overall

8.9

Food

8.6

Reviews

1 / 10
10.0
Excellent

Anonymous,Jan 2026

SEA - TPE

First time travelled with starlux and had best experience. Food was really good and crew is the best. Entertainment was also best. Having latest movies. I requested for isle seat at the last time and they provided me. Best airline service.

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, Korean Air, and United Airlines can get you from Ontario to Asia in just under 23h 05m. Your travel time can differ by up to 5h 10m. 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?

    $330 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?

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

  • 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 $351). Flying from Ontario to Asia in June is currently the most expensive (average of $528). 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.
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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 January 29, 2026.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$486Average$1,067FlexibilityNo cancel feeOn-time69%
Korean AirCheapest$637Average$784FlexibilityNo cancel feeOn-time81%
DeltaCheapest$644Average$917FlexibilityNo cancel feeOn-timeN/A
Asiana AirlinesCheapest$647Average$728FlexibilityNo cancel feeOn-time76%
China AirlinesCheapest$649Average$972FlexibilityNo cancel feeOn-time70%
STARLUX AirlinesCheapest$650Average$1,040FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$712Average$974FlexibilityNo cancel feeOn-time71%
Philippine AirlinesCheapest$754Average$956FlexibilityNo cancel feeOn-time60%
Hawaiian AirlinesCheapest$892Average$1,443FlexibilityNo cancel feeOn-time85%
Cathay PacificCheapest$938Average$1,216FlexibilityNo cancel feeOn-time72%

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