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$340+ 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 8/24. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — ICN
Jun 17 — Jun 241
Tue 6/17
Tue 6/24
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 June 12, 2025.

Round-trip from

$660
(United Airlines)

One-way from

$340
(Hawaiian Airlines)

Popular in

December

Cheapest in

September

Average price

$1,288

Good round-trip deal

$815 or less

Good one-way deal

$564 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 ($121 potential increase over avg. RT price).
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Cheapest flight prices on average. 5% potential price decrease ($53 potential savings vs. average RT price).
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Average for round-trip flights in June 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 June 12, 2025.

This lastminute.com deal was found by Cheapflights users on 6/10. 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 lastminute.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/66:00 amONT - NRT
1 stop18h 00mHawaiian Airlines
Mon 10/206:25 pmNRT - ONT
1 stop16h 05mHawaiian Airlines
Deal found 6/10$653
This United Airlines deal was found by Cheapflights users on 6/10. 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.
Wed 8/65:05 amONT - DEL
2 stops27h 55mUnited Airlines
Sun 9/2811:35 pmDEL - ONT
2 stops34h 19mUnited Airlines
Deal found 6/10$660
This lol.travel deal was found by Cheapflights users on 6/12. 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 lol.travel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/76:25 amONT - SIN
2 stops31h 35mKorean Air
Wed 8/207:30 amSIN - ONT
2 stops24h 41mKorean Air
Deal found 6/12$675
This lastminute.com deal was found by Cheapflights users on 6/10. 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 lastminute.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/611:07 amONT - HND
1 stop16h 18mHawaiian Airlines
Mon 10/209:20 pmHND - ONT
1 stop15h 17mHawaiian Airlines
Deal found 6/10$728
This Kiwi.com deal was found by Cheapflights users on 6/9. 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.
Sun 9/219:41 pmONT - NRT
1 stop30h 19mMultiple Airlines
Sun 9/289:30 pmNRT - ONT
1 stop18h 10mMultiple Airlines
Deal found 6/9$761
This American Airlines deal was found by Cheapflights users on 6/10. 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.
Wed 8/66:10 amONT - DEL
2 stops26h 20mAmerican Airlines
Tue 9/3011:30 pmDEL - ONT
2 stops31h 11mAmerican Airlines
Deal found 6/10$764
This FlightHub deal was found by Cheapflights users on 6/10. 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.
Sun 8/246:00 amONT - MNL
2 stops25h 05mKorean Air
Mon 9/111:30 pmMNL - ONT
2 stops32h 41mKorean Air
Deal found 6/10$771
This United Airlines deal was found by Cheapflights users on 6/10. 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 11/136:00 amONT - MNL
1 stop22h 45mUnited Airlines
Thu 12/49:55 amMNL - ONT
1 stop24h 05mUnited Airlines
Deal found 6/10$778
This Delta deal was found by Cheapflights users on 6/10. 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.
Wed 8/611:25 amONT - DEL
2 stops26h 00mDelta
Sat 9/2712:50 amDEL - ONT
2 stops35h 26mDelta
Deal found 6/10$780
This oojo deal was found by Cheapflights users on 6/11. 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.
Fri 10/2412:10 amONT - MNL
1 stop24h 45mChina Airlines
Mon 11/33:15 amMNL - ONT
1 stop29h 35mChina Airlines
Deal found 6/11$782
This United Airlines deal was found by Cheapflights users on 6/11. 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.
Mon 9/16:00 amONT - SIN
1 stop21h 25mUnited Airlines
Tue 9/308:45 amSIN - ONT
1 stop18h 28mUnited Airlines
Deal found 6/11$784
This FlightHub deal was found by Cheapflights users on 6/10. 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.
Wed 11/266:43 amONT - BKK
2 stops23h 47mKorean Air
Sun 12/79:40 amBKK - ONT
2 stops46h 37mKorean Air
Deal found 6/10$786

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 June 12, 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

Wed 8/6

5:05 am-9:30 pm

2 stops27h 55m

New Delhi Indira Gandhi Intl

Sun 9/28

11:35 pm-9:24 pm

2 stops34h 19m

$660

OntarioSingapore

ONT - SIN

ONTSIN

Ontario

Thu 8/7

6:25 am-5:00 am

2 stops31h 35m

Singapore Changi

Wed 8/20

7:30 am-5:11 pm

2 stops24h 41m

$675

OntarioTokyo

ONT - HND

ONTHND

Ontario

Mon 10/6

11:07 am-7:25 pm

1 stop16h 18m

Tokyo Haneda

Mon 10/20

9:20 pm-8:37 pm

1 stop15h 17m

$728

OntarioNew Delhi

ONT - DEL

ONTDEL

Ontario

Wed 8/6

6:10 am-9:00 pm

2 stops26h 20m

New Delhi Indira Gandhi Intl

Tue 9/30

11:30 pm-6:11 pm

2 stops31h 11m

$764

OntarioTokyo

ONT - NRT

ONTNRT

Ontario

Mon 8/4

9:41 pm-8:00 pm

1 stop30h 19m

Tokyo Narita

Mon 8/25

9:30 pm-11:40 pm

1 stop18h 10m

$764

OntarioManila

ONT - MNL

ONTMNL

Ontario

Sun 8/24

6:00 am-10:05 pm

2 stops25h 05m

Manila Ninoy Aquino Intl

Mon 9/1

11:30 pm-5:11 pm

2 stops32h 41m

$771

OntarioManila

ONT - MNL

ONTMNL

Ontario

Thu 11/13

6:00 am-8:45 pm

1 stop22h 45m

Manila Ninoy Aquino Intl

Thu 12/4

9:55 am-9:59 am

1 stop16h 04m

$778

OntarioNew Delhi

ONT - DEL

ONTDEL

Ontario

Wed 8/6

11:25 am-1:55 am

2 stops26h 00m

New Delhi Indira Gandhi Intl

Sat 9/27

12:50 am-11:46 pm

2 stops35h 26m

$780

OntarioManila

ONT - MNL

ONTMNL

Ontario

Fri 10/24

12:10 am-3:55 pm

1 stop24h 45m

Manila Ninoy Aquino Intl

Mon 11/3

3:15 am-4:50 pm

1 stop29h 35m

$782

OntarioSingapore

ONT - SIN

ONTSIN

Ontario

Mon 9/1

6:00 am-6:25 pm

1 stop21h 25m

Singapore Changi

Tue 9/30

8:45 am-12:13 pm

1 stop18h 28m

$784

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/10

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 $1,000). 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 June 12, 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.

Rainfall in Asia by month

Plan your trip to Asia by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Asia ranges from 0.4 - 15.7 inches per month. July is typically the wettest month, when rainfall can reach 15.7 in. February is typically the driest time to visit Asia when rainfall is around 0.4 in.

Temperature in Asia by month

Plan your trip to Asia by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Asia, use this chart to help with planning. For those seeking warmer temperatures, April is the ideal time of year to visit, when temperatures reach an average of 84.2 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 78.8 F).

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 June 12, 2025.
STARLUX Airlines
9.1
Wonderful
177 reviews

Boarding

9.0

Comfort

9.0

Food

8.8

Overall

9.1

Entertainment

8.9

Crew

9.3

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
177 reviews
STARLUX Airlines
9.1
Wonderful
177 reviews

Boarding

9.0

Comfort

9.0

Food

8.8

Overall

9.1

Entertainment

8.9

Crew

9.3

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
1,202 reviews
STARLUX Airlines
9.1
Wonderful
177 reviews

Boarding

9.0

Comfort

9.0

Food

8.8

Overall

9.1

Entertainment

8.9

Crew

9.3

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
1,088 reviews
STARLUX Airlines
9.1
Wonderful
177 reviews

Boarding

9.0

Comfort

9.0

Food

8.8

Overall

9.1

Entertainment

8.9

Crew

9.3

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
1,489 reviews
STARLUX Airlines
9.1
Wonderful
177 reviews

Boarding

9.0

Comfort

9.0

Food

8.8

Overall

9.1

Entertainment

8.9

Crew

9.3

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
738 reviews
STARLUX Airlines
9.1
Wonderful
177 reviews

Boarding

9.0

Comfort

9.0

Food

8.8

Overall

9.1

Entertainment

8.9

Crew

9.3

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?

    $340 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 Korean Air and Delta, with prices starting from $365 and $397, 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 $1,000). 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 June 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$486Average$1,133FlexibilityNo 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$1,096FlexibilityNo cancel feeOn-time71%
Korean AirCheapest$717Average$1,000FlexibilityNo cancel feeOn-time81%
Asiana AirlinesCheapest$720Average$728FlexibilityNo cancel feeOn-time76%
China AirlinesCheapest$735Average$1,100FlexibilityNo cancel feeOn-time70%
Philippine AirlinesCheapest$767Average$1,069FlexibilityNo cancel feeOn-time60%

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