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Ontario

$355+ Cheap flights from Asia to Ontario (ONT)

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 9/1. Fares are subject to change and may not be available on all flights or dates of travel.
ICN — ONT
Jul 8 — Jul 151
Tue 7/8
Tue 7/15
1 adult, Economy
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Cheap flight deals from Asia to Ontario

Keep the following information in mind while searching for Asia to Ontario flight deals. Data was last updated July 3, 2025.

Round-trip from

$625
(United Airlines)

One-way from

$355
(Trip.com)

Popular in

July

Cheapest in

March

Average price

$1,111

Good round-trip deal

$898 or less

Good one-way deal

$690 or less
From Asia to Ontario
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One-way flight from Asia to Ontario
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Highest demand for flights based on searches. 13% potential increase in price ($136 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($24 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 Asia to Ontario.
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Price to beat on a one-way flight from Asia to Ontario.
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Find flight deals from Asia to Ontario

Cheapest flights from Asia to Ontario
Explore the most affordable flight options available from Asia to Ontario. 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 7/2. 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 12/186:00 pmICN - ONT
2 stops19h 17mUnited Airlines
Tue 12/301:00 pmONT - ICN
2 stops23h 40mUnited Airlines
Deal found 7/2$625
This Alaska 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/188:35 pmICN - ONT
1 stop19h 24mAlaska Airlines
Sat 11/16:00 amONT - ICN
1 stop20h 35mAlaska Airlines
Deal found 7/2$717
This China 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 China Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/264:55 pmMNL - ONT
1 stop15h 55mChina Airlines
Mon 12/110:45 pmONT - MNL
1 stop19h 10mChina Airlines
Deal found 7/3$729
This Booking.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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/1311:20 amHKG - ONT
1 stop20h 45mSTARLUX Airlines
Sat 9/2711:10 pmONT - HKG
1 stop19h 45mSTARLUX Airlines
Deal found 7/2$739
This hutchgo.com 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 hutchgo.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/42:00 pmHKG - ONT
1 stop19h 40mChina Airlines
Sat 9/612:45 amONT - HKG
1 stop18h 20mChina Airlines
Deal found 7/1$751
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 9/49:50 amTPE - ONT
1 stop25h 43mUnited Airlines
Sun 9/141:42 pmONT - TPE
1 stop38h 03mUnited Airlines
Deal found 7/2$757
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.
Fri 10/3110:30 pmHKG - ONT
1 stop15h 15mUnited Airlines
Sun 11/306:38 pmONT - HKG
1 stop32h 42mUnited Airlines
Deal found 7/3$760
This United 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/124:25 pmHND - ONT
1 stop13h 12mUnited Airlines
Sun 2/86:00 amONT - HND
1 stop15h 50mUnited Airlines
Deal found 7/1$763
This United 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/114:45 pmNRT - ONT
1 stop12h 52mUnited Airlines
Mon 1/266:00 amONT - NRT
1 stop16h 00mUnited Airlines
Deal found 7/1$764
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.
Thu 9/118:40 amMNL - ONT
2 stops27h 03mUnited Airlines
Thu 11/135:40 amONT - MNL
2 stops23h 05mUnited Airlines
Deal found 7/3$771
This Richmond 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 Richmond is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/298:05 pmTPE - ONT
Nonstop12h 35mSTARLUX Airlines
Mon 9/811:10 pmONT - TPE
Nonstop14h 05mSTARLUX Airlines
Deal found 7/2$783
This Expedia 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/14:50 pmMNL - ONT
1 stop16h 50mMultiple Airlines
Thu 11/276:55 pmONT - MNL
2 stops23h 00mMultiple Airlines
Deal found 7/1$789

Cheapflights Fare Finder

Customize your flight search to find flights from Asia to Ontario 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 Asia to Ontario that are best for you.

Fly from

Asia

Fly to

Ontario

Route

Depart

Return

Price

IncheonOntario

ICN - ONT

ICNONT

Incheon Intl

Thu 12/18

12:45 pm-9:59 am

1 stop14h 14m

Ontario

Tue 12/30

1:00 pm-5:40 am

2 stops23h 40m

$625

IncheonOntario

ICN - ONT

ICNONT

Incheon Intl

Sat 10/18

8:35 pm-11:59 pm

1 stop19h 24m

Ontario

Sat 11/1

6:00 am-6:35 pm

1 stop20h 35m

$717

ManilaOntario

MNL - ONT

MNLONT

Manila Ninoy Aquino Intl

Wed 11/26

4:55 pm-4:50 pm

1 stop15h 55m

Ontario

Mon 12/1

10:45 pm-9:55 am

1 stop19h 10m

$729

Hong KongOntario

HKG - ONT

HKGONT

Hong Kong Intl

Sat 9/13

11:20 am-5:05 pm

1 stop20h 45m

Ontario

Sat 9/27

11:10 pm-9:55 am

1 stop19h 45m

$739

Hong KongOntario

HKG - ONT

HKGONT

Hong Kong Intl

Thu 9/4

2:00 pm-6:40 pm

1 stop19h 40m

Ontario

Sat 9/6

12:45 am-10:05 am

1 stop18h 20m

$751

Taipei CityOntario

TPE - ONT

TPEONT

Taipei City Taiwan Taoyuan Intl

Thu 9/4

9:50 am-8:33 pm

1 stop25h 43m

Ontario

Sun 9/14

1:42 pm-6:45 pm

1 stop38h 03m

$757

Hong KongOntario

HKG - ONT

HKGONT

Hong Kong Intl

Fri 10/31

10:30 pm-10:45 pm

1 stop15h 15m

Ontario

Sun 11/30

6:38 pm-7:20 pm

1 stop32h 42m

$760

TokyoOntario

HND - ONT

HNDONT

Tokyo Haneda

Wed 11/12

4:25 pm-12:37 pm

1 stop13h 12m

Ontario

Sun 2/8

6:00 am-2:50 pm

1 stop15h 50m

$763

TokyoOntario

NRT - ONT

NRTONT

Tokyo Narita

Tue 11/11

4:45 pm-12:37 pm

1 stop12h 52m

Ontario

Wed 1/28

6:00 am-3:00 pm

1 stop16h 00m

$764

Taipei CityOntario

TPE - ONT

TPEONT

Taipei City Taiwan Taoyuan Intl

Fri 8/29

8:05 pm-5:40 pm

Nonstop12h 35m

Ontario

Mon 9/8

11:10 pm-4:15 am

Nonstop14h 05m

$783

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/1

Showing 1-10 of 60 results
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Best time to book a flight from Asia to Ontario

Have a flexible travel schedule? Discover the best time to fly to Ontario from Asia 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 Asia to Ontario

What is the cheapest month to book a flight from Asia to Ontario?

Currently, August is the cheapest month in which you can book a flight from Asia to Ontario (average of $246). Flying from Asia to Ontario in March is currently the most expensive (average of $328). 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 AS to ONT?

Find hourly flight availability from Asia to Ontario. 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 Asia to Ontario as you normally would.

Reviews of airlines servicing Ontario

Get insights into the airlines that provide service to Ontario. 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 Ontario. Reviews last updated July 3, 2025.
See what other customers who have flown with STARLUX Airlines, EVA Air, and Korean Air from Asia to Ontario have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
STARLUX Airlines
9.1
Wonderful
189 reviews

Comfort

9.0

Boarding

9.0

Entertainment

9.0

Overall

9.1

Crew

9.3

Food

8.9

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

Comfort

9.0

Boarding

9.0

Entertainment

9.0

Overall

9.1

Crew

9.3

Food

8.9

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

Comfort

9.0

Boarding

9.0

Entertainment

9.0

Overall

9.1

Crew

9.3

Food

8.9

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

Comfort

9.0

Boarding

9.0

Entertainment

9.0

Overall

9.1

Crew

9.3

Food

8.9

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

Comfort

9.0

Boarding

9.0

Entertainment

9.0

Overall

9.1

Crew

9.3

Food

8.9

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
7,970 reviews
STARLUX Airlines
9.1
Wonderful
189 reviews

Comfort

9.0

Boarding

9.0

Entertainment

9.0

Overall

9.1

Crew

9.3

Food

8.9

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 Asia to Ontario. 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 into for flights to Ontario from Asia?

    Located just 3.1 mi from the city center, Ontario (ONT) is the airport most travelers will use when flying to Ontario from Asia.

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

    $430 is the cheapest one-way deal found within the past few days, from China Airlines. You may also be able to find cheap deals on United Airlines and STARLUX Airlines, with prices starting from $434 and $456, respectively.

  • What are the most popular routes from Asia to Ontario?

    When deciding which route to take from Asia to Ontario consider Tokyo Narita - Ontario, Tokyo Haneda - Ontario or Bangkok Suvarnabhumi - Ontario as they are the most popular.

  • Can I find deals for flights from Asia to Ontario that include hotel bookings?

    Yes. In addition to deals on Asia to Ontario flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Asia to Ontario?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Asia to Ontario.

  • Can I find deals for business class flights from Asia to Ontario?

    Yes. Cheapflights offers flight deals from Asia to Ontario 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 Asia to Ontario?

    Currently, August is the cheapest month in which you can book a flight from Asia to Ontario (average of $246). Flying from Asia to Ontario in March is currently the most expensive (average of $328). 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 Asia to Ontario

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Top 2 airlines flying from Asia to Ontario

Discover the top 2 airlines that operate flights from Asia to Ontario. 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$550Average$755FlexibilityNo cancel feeOn-time69%
China AirlinesCheapest$708Average$895FlexibilityNo cancel feeOn-time70%

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