HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Asia

$338+ 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 9/29. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — ICN
Aug 19 — Aug 261
Tue 8/19
Tue 8/26
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 August 14, 2025.

Round-trip from

$632
(SmartFares)

One-way from

$338
(SmartFares)

Popular in

December

Cheapest in

September

Average price

$812

Good round-trip deal

$742 or less

Good one-way deal

$448 or less
From Ontario to Asia
Search Deals
One-way flight from Ontario to Asia
Search Deals
Highest demand for flights based on searches. 11% potential increase in price ($127 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease ($52 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in August 2025
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 August 14, 2025.

This SmartFares deal was found by Cheapflights users on 8/12. 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 SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/23:06 pmONT - NRT
1 stop32h 54mHawaiian Airlines
Tue 9/166:25 pmNRT - ONT
1 stop16h 22mHawaiian Airlines
Deal found 8/12$632
This SmartFares deal was found by Cheapflights users on 8/12. 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 SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/286:00 amONT - NRT
1 stop18h 00mHawaiian Airlines
Wed 10/86:25 pmNRT - ONT
1 stop34h 12mHawaiian Airlines
Deal found 8/12$640
This SmartFares deal was found by Cheapflights users on 8/13. 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.
Mon 9/16:00 amONT - NRT
1 stop18h 00mHawaiian Airlines
Thu 9/116:25 pmNRT - ONT
1 stop21h 38mHawaiian Airlines
Deal found 8/13$644
This Tripair deal was found by Cheapflights users on 8/13. 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 Tripair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/16:00 amONT - NRT
1 stop18h 00mHawaiian Airlines
Tue 9/166:25 pmNRT - ONT
1 stop16h 22mHawaiian Airlines
Deal found 8/13$649
This Alaska Airlines deal was found by Cheapflights users on 8/14. 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 9/226:00 amONT - NRT
1 stop18h 00mAlaska Airlines
Tue 9/236:25 pmNRT - ONT
1 stop16h 22mAlaska Airlines
Deal found 8/14$655
This SmartFares deal was found by Cheapflights users on 8/14. 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.
Mon 9/227:47 pmONT - NRT
1 stop28h 13mHawaiian Airlines
Thu 10/96:25 pmNRT - ONT
1 stop21h 38mHawaiian Airlines
Deal found 8/14$656
This Alaska Airlines deal was found by Cheapflights users on 8/14. 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 9/16:00 amONT - NRT
1 stop18h 00mAlaska Airlines
Wed 9/106:25 pmNRT - ONT
1 stop16h 22mAlaska Airlines
Deal found 8/14$658
This SmartFares deal was found by Cheapflights users on 8/14. 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.
Mon 11/106:00 amONT - NRT
1 stop17h 00mHawaiian Airlines
Wed 11/266:30 pmNRT - ONT
1 stop22h 29mHawaiian Airlines
Deal found 8/14$661
This Alaska Airlines deal was found by Cheapflights users on 8/13. 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 9/153:06 pmONT - NRT
1 stop32h 54mAlaska Airlines
Wed 9/176:25 pmNRT - ONT
1 stop16h 22mAlaska Airlines
Deal found 8/13$662
This Alaska Airlines deal was found by Cheapflights users on 8/14. 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.
Tue 9/166:00 amONT - NRT
1 stop18h 00mAlaska Airlines
Thu 10/26:25 pmNRT - ONT
1 stop21h 38mAlaska Airlines
Deal found 8/14$663
This Alaska Airlines deal was found by Cheapflights users on 8/14. 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.
Sun 8/3111:39 amONT - NRT
1 stop36h 21mAlaska Airlines
Wed 9/106:25 pmNRT - ONT
1 stop16h 22mAlaska Airlines
Deal found 8/14$665
This Kissandfly.com deal was found by Cheapflights users on 8/14. 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 Kissandfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/256:00 amONT - HND
2 stops24h 50mKorean Air
Tue 9/92:00 amHND - ONT
2 stops31h 11mKorean Air
Deal found 8/14$690

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 August 14, 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

Mon 9/22

6:00 am-4:00 pm

1 stop18h 00m

Tokyo Narita

Tue 9/23

6:25 pm-6:47 pm

1 stop16h 22m

$655

OntarioTokyo

ONT - NRT

ONTNRT

Ontario

Mon 9/1

6:00 am-4:00 pm

1 stop18h 00m

Tokyo Narita

Thu 9/18

6:25 pm-6:47 pm

1 stop16h 22m

$658

OntarioTokyo

ONT - NRT

ONTNRT

Ontario

Wed 9/3

6:00 am-4:00 pm

1 stop18h 00m

Tokyo Narita

Wed 9/10

6:25 pm-6:47 pm

1 stop16h 22m

$658

OntarioTokyo

ONT - NRT

ONTNRT

Ontario

Wed 9/3

6:00 am-4:00 pm

1 stop18h 00m

Tokyo Narita

Wed 9/17

6:25 pm-6:47 pm

1 stop16h 22m

$658

OntarioTokyo

ONT - NRT

ONTNRT

Ontario

Tue 9/2

6:00 am-4:00 pm

1 stop18h 00m

Tokyo Narita

Wed 9/17

6:25 pm-6:47 pm

1 stop16h 22m

$658

OntarioTokyo

ONT - NRT

ONTNRT

Ontario

Wed 9/3

6:00 am-4:00 pm

1 stop18h 00m

Tokyo Narita

Fri 9/19

6:25 pm-6:47 pm

1 stop16h 22m

$658

OntarioTokyo

ONT - HND

ONTHND

Ontario

Tue 9/9

6:00 am-2:15 pm

1 stop16h 15m

Tokyo Haneda

Wed 9/17

4:05 pm-10:40 pm

1 stop22h 35m

$703

OntarioTokyo

ONT - HND

ONTHND

Ontario

Tue 9/9

6:00 am-2:15 pm

1 stop16h 15m

Tokyo Haneda

Thu 9/18

4:05 pm-5:00 pm

1 stop16h 55m

$703

OntarioTokyo

ONT - HND

ONTHND

Ontario

Mon 9/15

6:00 am-2:15 pm

1 stop16h 15m

Tokyo Haneda

Fri 10/3

4:05 pm-10:40 pm

1 stop22h 35m

$708

OntarioTokyo

ONT - HND

ONTHND

Ontario

Mon 9/15

6:00 am-2:15 pm

1 stop16h 15m

Tokyo Haneda

Wed 10/1

4:05 pm-5:00 pm

1 stop16h 55m

$708

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/13

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 $994). Flying from Ontario to Asia in December is currently the most expensive (average of $1,635). 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 August 14, 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 August 14, 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
9.0
Wonderful
204 reviews

Crew

9.3

Boarding

9.0

Food

8.7

Comfort

8.9

Entertainment

8.9

Overall

9.0

Reviews

1 / 7
10.0
Excellent

ltulagan,Jun 2025

TPE - SEA

The whole trip was very pleasant from the crew, the food, the amenities during the flight.
STARLUX Airlines
9.0
Wonderful
204 reviews
STARLUX Airlines
9.0
Wonderful
204 reviews

Crew

9.3

Boarding

9.0

Food

8.7

Comfort

8.9

Entertainment

8.9

Overall

9.0

Reviews

1 / 7
10.0
Excellent

ltulagan,Jun 2025

TPE - SEA

The whole trip was very pleasant from the crew, the food, the amenities during the flight.
Korean Air
8.4
Very good
1,131 reviews
STARLUX Airlines
9.0
Wonderful
204 reviews

Crew

9.3

Boarding

9.0

Food

8.7

Comfort

8.9

Entertainment

8.9

Overall

9.0

Reviews

1 / 7
10.0
Excellent

ltulagan,Jun 2025

TPE - SEA

The whole trip was very pleasant from the crew, the food, the amenities during the flight.
China Airlines
8.3
Very good
762 reviews
STARLUX Airlines
9.0
Wonderful
204 reviews

Crew

9.3

Boarding

9.0

Food

8.7

Comfort

8.9

Entertainment

8.9

Overall

9.0

Reviews

1 / 7
10.0
Excellent

ltulagan,Jun 2025

TPE - SEA

The whole trip was very pleasant from the crew, the food, the amenities during the flight.
Delta
8.0
Very good
7,980 reviews
STARLUX Airlines
9.0
Wonderful
204 reviews

Crew

9.3

Boarding

9.0

Food

8.7

Comfort

8.9

Entertainment

8.9

Overall

9.0

Reviews

1 / 7
10.0
Excellent

ltulagan,Jun 2025

TPE - SEA

The whole trip was very pleasant from the crew, the food, the amenities during the flight.
United Airlines
7.4
Good
8,916 reviews
STARLUX Airlines
9.0
Wonderful
204 reviews

Crew

9.3

Boarding

9.0

Food

8.7

Comfort

8.9

Entertainment

8.9

Overall

9.0

Reviews

1 / 7
10.0
Excellent

ltulagan,Jun 2025

TPE - SEA

The whole trip was very pleasant from the crew, the food, the amenities during the flight.

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.

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

    $338 is the cheapest one-way deal found within the past few days, from Hawaiian Airlines. You may also be able to find cheap deals on Alaska Airlines and Delta, with prices starting from $345 and $352, 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 - Manila Ninoy Aquino Intl.

  • 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 $994). Flying from Ontario to Asia in December is currently the most expensive (average of $1,635). 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 John F Kennedy Intl flights
Los Angeles to Seattle flights
Los Angeles to Newark flights
Los Angeles to Honolulu flights
Los Angeles to Narita flights
Ontario to Seattle flights
San Francisco to Newark flights
Los Angeles to Las Vegas flights
Los Angeles to LaGuardia flights
Los Angeles to Dallas/Fort Worth flights
San Francisco to Los Angeles flights
San Francisco to Seattle flights
San Francisco to Narita flights
Los Angeles to Boston flights
San Jose to Los Angeles flights
Burbank to Las Vegas flights
Los Angeles to Mexico City flights
San Francisco to LaGuardia flights
Los Angeles to San Francisco flights
San Francisco to Honolulu flights
San Francisco to Haneda flights
Los Angeles to O'Hare Intl flights
Santa Ana to Las Vegas flights
Los Angeles to Cancún flights
Los Angeles to San Jose flights
Los Angeles to Dulles Intl flights
Ontario to John F Kennedy Intl flights
San Francisco to Ontario flights
San Francisco to O'Hare Intl flights
Los Angeles to Manila flights
Los Angeles to Reagan-National flights
Los Angeles to Orlando flights
Ontario to San Francisco flights
Los Angeles to Suvarnabhumi flights
San Francisco to Las Vegas flights
Burbank to Newark flights
San Jose to Seattle flights
Oakland to Las Vegas flights
Los Angeles to Miami flights
Los Angeles to Oakland flights
San Francisco to Dallas/Fort Worth flights
Los Angeles to Portland flights
Ontario to Newark flights
Oakland to Los Angeles flights
Santa Ana to San Francisco flights
Santa Ana to Seattle flights
San Francisco to Cancún flights
San Jose to Las Vegas 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 August 14, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$486Average$1,074FlexibilityNo cancel feeOn-time69%
Asiana AirlinesCheapest$648Average$727FlexibilityNo cancel feeOn-time76%
ANACheapest$686Average$997FlexibilityNo cancel feeOn-time80%
Korean AirCheapest$698Average$1,000FlexibilityNo cancel feeOn-time81%
American AirlinesCheapest$712Average$977FlexibilityNo cancel feeOn-time71%
China AirlinesCheapest$725Average$1,103FlexibilityNo cancel feeOn-time70%
EVA AirCheapest$732Average$794FlexibilityNo cancel feeOn-time74%
Philippine AirlinesCheapest$767Average$980FlexibilityNo cancel feeOn-time60%
DeltaCheapest$788Average$1,105FlexibilityNo cancel feeOn-timeN/A
STARLUX AirlinesCheapest$789Average$1,141FlexibilityNo cancel feeOn-timeN/A

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.