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$359+ 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 9/10. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — ICN
Jul 8 — Jul 151
Tue 7/8
Tue 7/15
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 July 3, 2025.

Round-trip from

$657
(United Airlines)

One-way from

$359
(CrystalTravel)

Popular in

December

Cheapest in

September

Average price

$1,151

Good round-trip deal

$798 or less

Good one-way deal

$444 or less
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. 10% potential increase in price ($120 potential increase over avg. RT price).
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Cheapest flight prices on average. 5% potential price decrease ($52 potential savings vs. average RT price).
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Average for round-trip flights in July 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 July 3, 2025.

This United Airlines deal was found by Cheapflights users on 7/3. 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.
Tue 9/165:10 amONT - DEL
2 stops27h 50mUnited Airlines
Fri 9/2611:35 pmDEL - ONT
2 stops34h 19mUnited Airlines
Deal found 7/3$657
This oojo deal was found by Cheapflights users on 7/2. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/1312:45 amONT - MNL
1 stop24h 05mChina Airlines
Wed 8/2710:35 amMNL - ONT
1 stop23h 05mChina Airlines
Deal found 7/2$728
This FlightHub deal was found by Cheapflights users on 7/2. 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.
Thu 9/186:00 amONT - MNL
2 stops26h 59mKorean Air
Sun 10/1211:30 pmMNL - ONT
2 stops32h 47mKorean Air
Deal found 7/2$729
This CrystalTravel deal was found by Cheapflights users on 7/3. 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 11/106:43 amONT - BKK
2 stops25h 37mKorean Air
Tue 11/2511:15 pmBKK - ONT
2 stops33h 02mKorean Air
Deal found 7/3$735
This Delta deal was found by Cheapflights users on 7/3. 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.
Mon 10/2711:29 amONT - TPE
1 stop17h 36mDelta
Tue 2/310:45 amTPE - ONT
2 stops29h 07mDelta
Deal found 7/3$761
This oojo deal was found by Cheapflights users on 7/1. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/1612:10 amONT - TPE
Nonstop14h 05mChina Airlines
Sun 10/199:10 pmTPE - ONT
Nonstop11h 50mChina Airlines
Deal found 7/1$769
This United Airlines deal was found by Cheapflights users on 7/2. 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.
Thu 11/205:40 amONT - MNL
2 stops23h 05mUnited Airlines
Mon 1/269:55 amMNL - ONT
2 stops50h 22mUnited Airlines
Deal found 7/2$771
This Kissandfly.com deal was found by Cheapflights users on 7/2. 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.
Sun 8/246:00 amONT - HND
2 stops24h 50mKorean Air
Mon 9/82:00 amHND - ONT
2 stops36h 42mKorean Air
Deal found 7/2$774
This American Airlines deal was found by Cheapflights users on 7/1. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/156:10 amONT - NRT
2 stops18h 35mAmerican Airlines
Wed 9/176:10 pmNRT - ONT
2 stops20h 23mAmerican Airlines
Deal found 7/1$775
This Korean Air deal was found by Cheapflights users on 7/1. 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.
Wed 8/66:25 amONT - TPE
2 stops44h 25mKorean Air
Tue 8/126:55 pmTPE - ONT
2 stops42h 47mKorean Air
Deal found 7/1$776
This Delta deal was found by Cheapflights users on 7/3. 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.
Tue 8/266:00 amONT - HND
1 stop16h 15mDelta
Tue 9/24:05 pmHND - ONT
1 stop34h 45mDelta
Deal found 7/3$776
This Delta deal was found by Cheapflights users on 7/1. 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.
Thu 8/76:25 amONT - BKK
2 stops25h 20mDelta
Tue 8/269:50 amBKK - ONT
2 stops26h 50mDelta
Deal found 7/1$778

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 July 3, 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

OntarioNew Delhi

ONT - DEL

ONTDEL

Ontario

Tue 9/16

5:10 am-9:30 pm

2 stops27h 50m

New Delhi Indira Gandhi Intl

Fri 9/26

11:35 pm-9:24 pm

2 stops34h 19m

$657

OntarioManila

ONT - MNL

ONTMNL

Ontario

Wed 8/13

12:45 am-3:50 pm

1 stop24h 05m

Manila Ninoy Aquino Intl

Wed 8/27

10:35 am-6:40 pm

1 stop23h 05m

$728

OntarioManila

ONT - MNL

ONTMNL

Ontario

Thu 9/18

6:00 am-11:59 pm

2 stops26h 59m

Manila Ninoy Aquino Intl

Sun 10/12

11:30 pm-5:17 pm

2 stops32h 47m

$729

OntarioBangkok

ONT - BKK

ONTBKK

Ontario

Mon 11/10

6:43 am-11:20 pm

2 stops25h 37m

Bangkok Suvarnabhumi

Tue 11/25

11:15 pm-5:17 pm

2 stops33h 02m

$735

OntarioTaipei City

ONT - TPE

ONTTPE

Ontario

Mon 10/27

9:55 am-8:05 pm

2 stops19h 10m

Taipei City Taiwan Taoyuan Intl

Tue 2/3

10:45 am-4:19 pm

2 stops21h 34m

$761

OntarioTokyo

ONT - NRT

ONTNRT

Ontario

Tue 9/2

6:00 am-3:35 pm

1 stop17h 35m

Tokyo Narita

Tue 9/9

5:45 pm-6:36 pm

1 stop16h 51m

$769

OntarioTaipei City

ONT - TPE

ONTTPE

Ontario

Thu 10/16

12:10 am-5:15 am

Nonstop14h 05m

Taipei City Taiwan Taoyuan Intl

Sun 10/19

9:10 pm-6:00 pm

Nonstop11h 50m

$769

OntarioTokyo

ONT - HND

ONTHND

Ontario

Sun 8/24

6:00 am-10:50 pm

2 stops24h 50m

Tokyo Haneda

Mon 9/8

2:00 am-10:42 pm

2 stops36h 42m

$774

OntarioTokyo

ONT - NRT

ONTNRT

Ontario

Mon 9/15

6:10 am-4:45 pm

2 stops18h 35m

Tokyo Narita

Wed 9/17

6:10 pm-10:33 pm

2 stops20h 23m

$775

OntarioTokyo

ONT - HND

ONTHND

Ontario

Tue 8/26

6:00 am-2:15 pm

1 stop16h 15m

Tokyo Haneda

Tue 9/2

4:05 pm-10:50 am

1 stop34h 45m

$776

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/2

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 $998). 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 July 3, 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 July 3, 2025.
Read reviews from past customers who have flown STARLUX Airlines, EVA Air, and Korean Air 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
9.1
Wonderful
189 reviews

Crew

9.3

Food

8.9

Entertainment

9.0

Comfort

9.0

Boarding

9.0

Overall

9.1

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
9.1
Wonderful
189 reviews
STARLUX Airlines
9.1
Wonderful
189 reviews

Crew

9.3

Food

8.9

Entertainment

9.0

Comfort

9.0

Boarding

9.0

Overall

9.1

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.
EVA Air
8.4
Very good
1,214 reviews
STARLUX Airlines
9.1
Wonderful
189 reviews

Crew

9.3

Food

8.9

Entertainment

9.0

Comfort

9.0

Boarding

9.0

Overall

9.1

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
1,101 reviews
STARLUX Airlines
9.1
Wonderful
189 reviews

Crew

9.3

Food

8.9

Entertainment

9.0

Comfort

9.0

Boarding

9.0

Overall

9.1

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.
Japan Airlines
8.3
Very good
1,503 reviews
STARLUX Airlines
9.1
Wonderful
189 reviews

Crew

9.3

Food

8.9

Entertainment

9.0

Comfort

9.0

Boarding

9.0

Overall

9.1

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
747 reviews
STARLUX Airlines
9.1
Wonderful
189 reviews

Crew

9.3

Food

8.9

Entertainment

9.0

Comfort

9.0

Boarding

9.0

Overall

9.1

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?

    $359 is the cheapest one-way deal found within the past few days, from Korean Air. You may also be able to find cheap deals on Delta and Japan Airlines, with prices starting from $376 and $393, 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 $998). 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

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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 July 3, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$486Average$1,128FlexibilityNo cancel feeOn-time69%
ZIPAIRCheapest$591Average$778FlexibilityNo cancel feeOn-timeN/A
Japan AirlinesCheapest$660Average$1,145FlexibilityNo cancel feeOn-time79%
ANACheapest$686Average$1,050FlexibilityNo cancel feeOn-time80%
Cathay PacificCheapest$704Average$784FlexibilityNo cancel feeOn-time72%
American AirlinesCheapest$712Average$1,059FlexibilityNo cancel feeOn-time71%
Korean AirCheapest$717Average$1,003FlexibilityNo cancel feeOn-time81%
Asiana AirlinesCheapest$720Average$728FlexibilityNo cancel feeOn-time76%
China AirlinesCheapest$733Average$1,094FlexibilityNo cancel feeOn-time70%
Philippine AirlinesCheapest$767Average$1,059FlexibilityNo cancel feeOn-time60%

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