HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Asia

$312+ 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 1/25. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — BKK
Feb 7 — Feb 141
Sat 2/7
Sat 2/14
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Ontario to Asia with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

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 January 8, 2026.

Most accurate provider

Justfly.com
3 stars

Most trusted provider

Justfly.com
3 stars

Round-trip from

$590
(SmartFares)

One-way from

$312
(Delta)

Popular in

December

Cheapest in

September

Average price

$800

Good round-trip deal

$691 or less

Good one-way deal

$419 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. 5% potential increase in price ($56 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

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 January 8, 2026.

This SmartFares deal was found by Cheapflights users on 1/6. 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 2/176:14 amONT - NRT
1 stop16h 46mHawaiian Airlines
Thu 2/266:30 pmNRT - ONT
1 stop22h 02mHawaiian Airlines
Deal found 1/6$590
This Vliegwinkel deal was found by Cheapflights users on 1/6. 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 Vliegwinkel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 1/256:00 amONT - NRT
1 stop17h 00mHawaiian Airlines
Tue 2/106:30 pmNRT - ONT
1 stop13h 38mHawaiian Airlines
Deal found 1/6$605
This Trip.com deal was found by Cheapflights users on 1/7. 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.
Sun 2/16:00 amONT - NRT
1 stop17h 00mHawaiian Airlines
Tue 2/106:30 pmNRT - ONT
1 stop13h 38mHawaiian Airlines
Deal found 1/7$621
This SmartFares deal was found by Cheapflights users on 1/7. 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.
Sat 2/711:53 amONT - NRT
1 stop35h 07mHawaiian Airlines
Mon 2/236:30 pmNRT - ONT
1 stop13h 38mHawaiian Airlines
Deal found 1/7$636
This Alaska Airlines deal was found by Cheapflights users on 1/7. 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.
Mon 1/266:00 amONT - NRT
1 stop17h 00mMultiple Airlines
Tue 2/36:30 pmNRT - ONT
1 stop13h 38mMultiple Airlines
Deal found 1/7$637
This IEagle deal was found by Cheapflights users on 1/6. 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.
Tue 1/2011:53 amONT - NRT
1 stop35h 07mMultiple Airlines
Fri 1/306:30 pmNRT - ONT
1 stop22h 26mMultiple Airlines
Deal found 1/6$643
This Alaska Airlines deal was found by Cheapflights users on 1/7. 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.
Sat 1/2411:53 amONT - NRT
1 stop35h 07mMultiple Airlines
Fri 2/66:30 pmNRT - ONT
1 stop22h 26mMultiple Airlines
Deal found 1/7$644
This SmartFares deal was found by Cheapflights users on 1/7. 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 1/226:00 amONT - NRT
1 stop17h 00mMultiple Airlines
Tue 2/106:30 pmNRT - ONT
1 stop13h 38mMultiple Airlines
Deal found 1/7$653
This Trip.com deal was found by Cheapflights users on 1/7. 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.
Sun 2/16:00 amONT - NRT
1 stop17h 00mHawaiian Airlines
Sun 2/86:30 pmNRT - ONT
1 stop13h 38mHawaiian Airlines
Deal found 1/7$662
This SmartFares deal was found by Cheapflights users on 1/6. 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 2/266:14 amONT - NRT
1 stop16h 46mHawaiian Airlines
Mon 3/166:30 pmNRT - ONT
1 stop21h 02mHawaiian Airlines
Deal found 1/6$663
This Kiwi.com deal was found by Cheapflights users on 1/6. 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.
Mon 1/266:00 amONT - NRT
1 stop17h 00mMultiple Airlines
Sat 2/76:30 pmNRT - ONT
1 stop13h 38mMultiple Airlines
Deal found 1/6$665
This CrystalTravel deal was found by Cheapflights users on 1/6. 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.
Wed 3/1110:45 pmONT - TPE
Nonstop14h 45mSTARLUX Airlines
Wed 3/258:30 pmTPE - ONT
Nonstop11h 20mSTARLUX Airlines
Deal found 1/6$666

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 8, 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

OntarioTokyo

ONT - NRT

ONTNRT

Ontario

Sat 2/7

4:03 pm-4:00 pm

1 stop30h 57m

Tokyo Narita

Tue 2/24

6:30 pm-10:44 pm

1 stop21h 14m

$644

OntarioTaipei City

ONT - TPE

ONTTPE

Ontario

Tue 4/14

11:53 am-7:55 pm

1 stop17h 02m

Taipei City Taiwan Taoyuan Intl

Wed 4/22

9:35 am-5:15 pm

1 stop22h 40m

$668

OntarioTaipei City

ONT - TPE

ONTTPE

Ontario

Tue 4/14

11:53 am-7:55 pm

1 stop17h 02m

Taipei City Taiwan Taoyuan Intl

Fri 4/24

9:35 am-11:13 am

1 stop16h 38m

$668

OntarioTaipei City

ONT - TPE

ONTTPE

Ontario

Tue 4/14

11:53 am-7:55 pm

1 stop17h 02m

Taipei City Taiwan Taoyuan Intl

Tue 4/21

9:35 am-5:15 pm

1 stop22h 40m

$668

OntarioTaipei City

ONT - TPE

ONTTPE

Ontario

Sat 4/18

7:30 am-7:55 pm

1 stop21h 25m

Taipei City Taiwan Taoyuan Intl

Sat 5/2

9:35 am-11:13 am

1 stop16h 38m

$668

OntarioTaipei City

ONT - TPE

ONTTPE

Ontario

Wed 4/1

6:00 am-7:55 pm

2 stops22h 55m

Taipei City Taiwan Taoyuan Intl

Thu 4/16

9:35 am-5:15 pm

1 stop22h 40m

$673

OntarioTaipei City

ONT - TPE

ONTTPE

Ontario

Mon 4/20

6:00 am-7:55 pm

2 stops22h 55m

Taipei City Taiwan Taoyuan Intl

Mon 5/25

9:35 am-12:49 pm

1 stop18h 14m

$673

OntarioTaipei City

ONT - TPE

ONTTPE

Ontario

Sat 4/11

5:45 pm-7:55 pm

2 stops35h 10m

Taipei City Taiwan Taoyuan Intl

Sat 4/18

9:35 am-10:43 pm

2 stops28h 08m

$673

OntarioTokyo

ONT - NRT

ONTNRT

Ontario

Tue 2/10

11:53 am-4:00 pm

1 stop35h 07m

Tokyo Narita

Mon 2/23

6:30 pm-11:32 pm

1 stop22h 02m

$682

OntarioManila

ONT - MNL

ONTMNL

Ontario

Sun 3/22

6:00 am-11:30 pm

2 stops26h 30m

Manila Ninoy Aquino Intl

Wed 4/1

1:10 am-5:13 pm

2 stops31h 03m

$707

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/4

Showing 1-10 of 60 results
1
2
3
...
6

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 $342). Flying from Ontario to Asia in June is currently the most expensive (average of $529). 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 8, 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 8, 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
256 reviews

Food

8.7

Comfort

8.8

Boarding

8.9

Crew

9.1

Entertainment

8.8

Overall

8.9

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
256 reviews
STARLUX Airlines
8.9
Very good
256 reviews

Food

8.7

Comfort

8.8

Boarding

8.9

Crew

9.1

Entertainment

8.8

Overall

8.9

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
256 reviews

Food

8.7

Comfort

8.8

Boarding

8.9

Crew

9.1

Entertainment

8.8

Overall

8.9

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
798 reviews
STARLUX Airlines
8.9
Very good
256 reviews

Food

8.7

Comfort

8.8

Boarding

8.9

Crew

9.1

Entertainment

8.8

Overall

8.9

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
8,025 reviews
STARLUX Airlines
8.9
Very good
256 reviews

Food

8.7

Comfort

8.8

Boarding

8.9

Crew

9.1

Entertainment

8.8

Overall

8.9

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
9,139 reviews
STARLUX Airlines
8.9
Very good
256 reviews

Food

8.7

Comfort

8.8

Boarding

8.9

Crew

9.1

Entertainment

8.8

Overall

8.9

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 China Airlines can get you from Ontario to Asia in just under 17h 02m. Your travel time can differ by up to 9h 28m. 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?

    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, February is the cheapest month in which you can book a flight from Ontario to Asia (average of $342). Flying from Ontario to Asia in June is currently the most expensive (average of $529). 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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Ontario to Asia

See prices for flight routes from nearby airports that may be better suited for you.
Los Angeles to John F Kennedy Intl flights
Los Angeles to Haneda flights
San Francisco to Las Vegas flights
Los Angeles to Seattle flights
Los Angeles to Honolulu flights
Los Angeles to Newark flights
Los Angeles to Narita flights
San Francisco to Ontario flights
San Francisco to John F Kennedy Intl flights
Los Angeles to Las Vegas flights
San Francisco to Haneda flights
Los Angeles to LaGuardia flights
Los Angeles to Miami flights
Los Angeles to Mexico City flights
San Jose to Los Angeles flights
Los Angeles to Cancún flights
Ontario to San Francisco flights
San Francisco to Santa Ana flights
Los Angeles to Dallas/Fort Worth flights
Burbank to Las Vegas flights
San Francisco to Los Angeles flights
Santa Ana to Las Vegas flights
Los Angeles to San Francisco flights
Los Angeles to Orlando flights
Los Angeles to Fort Lauderdale flights
San Francisco to Dallas/Fort Worth flights
Los Angeles to O'Hare Intl flights
Los Angeles to Boston flights
Ontario to Seattle flights
San Francisco to Cancún flights
San Francisco to Newark flights
Santa Ana to San Francisco flights
San Francisco to Honolulu flights
San Francisco to O'Hare Intl flights
Los Angeles to Salt Lake City flights
Los Angeles to Denver flights
San Francisco to Narita flights
Los Angeles to Manila flights
Los Angeles to San Jose flights
San Francisco to LaGuardia flights
San Francisco to New Delhi flights
Los Angeles to Heathrow flights
San Francisco to Mexico City flights
Los Angeles to Suvarnabhumi flights
San Francisco to Sky Harbor Intl flights
Los Angeles to Atlanta flights
Los Angeles to Reagan-National flights
San Francisco to Seattle flights
San Francisco to Miami flights
Los Angeles to Sky Harbor Intl flights

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 8, 2026.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$486Average$1,042FlexibilityNo cancel feeOn-time69%
Korean AirCheapest$637Average$953FlexibilityNo cancel feeOn-time81%
Asiana AirlinesCheapest$647Average$728FlexibilityNo cancel feeOn-time76%
China AirlinesCheapest$649Average$983FlexibilityNo cancel feeOn-time70%
DeltaCheapest$655Average$948FlexibilityNo cancel feeOn-timeN/A
STARLUX AirlinesCheapest$656Average$1,142FlexibilityNo 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%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.