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Ontario

$315+ 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 1/14. Fares are subject to change and may not be available on all flights or dates of travel.
BKK — ONT
Jan 27 — Feb 31
Tue 1/27
Tue 2/3
1 adult, Economy
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Cheap 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 December 28, 2025.

This United Airlines deal was found by Cheapflights users on 12/26. 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 12/2912:45 pmICN - ONT
1 stop14h 16mUnited Airlines
Mon 2/26:00 amONT - ICN
1 stop17h 15mUnited Airlines
Deal found 12/26$500
This United Airlines deal was found by Cheapflights users on 12/27. 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.
Sun 12/286:00 pmICN - ONT
1 stop16h 43mUnited Airlines
Fri 2/66:39 pmONT - ICN
1 stop28h 36mUnited Airlines
Deal found 12/27$501
This iWofly deal was found by Cheapflights users on 12/25. 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 iWofly is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/278:35 pmICN - ONT
1 stop30h 15mHawaiian Airlines
Wed 12/316:00 amONT - ICN
1 stop19h 35mHawaiian Airlines
Deal found 12/25$584
This Alaska Airlines deal was found by Cheapflights users on 12/27. 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 12/288:35 pmICN - ONT
1 stop20h 39mMultiple Airlines
Sun 1/186:00 amONT - ICN
1 stop19h 35mMultiple Airlines
Deal found 12/27$591
This United Airlines deal was found by Cheapflights users on 12/26. 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 12/2910:35 amHKG - ONT
1 stop15h 26mUnited Airlines
Mon 1/126:39 pmONT - HKG
1 stop32h 41mUnited Airlines
Deal found 12/26$624
This United Airlines deal was found by Cheapflights users on 12/27. 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.
Sun 12/284:25 pmHND - ONT
1 stop34h 36mUnited Airlines
Sun 1/46:39 pmONT - HND
1 stop27h 11mUnited Airlines
Deal found 12/27$666
This United Airlines deal was found by Cheapflights users on 12/27. 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.
Sun 12/284:25 pmHND - ONT
1 stop23h 16mUnited Airlines
Sat 1/36:39 pmONT - HND
1 stop27h 11mUnited Airlines
Deal found 12/27$667
This United Airlines deal was found by Cheapflights users on 12/26. 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.
Sun 12/284:45 pmNRT - ONT
1 stop22h 56mUnited Airlines
Thu 1/18:11 amONT - NRT
1 stop13h 49mUnited Airlines
Deal found 12/26$668
This United Airlines deal was found by Cheapflights users on 12/25. 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.
Sat 12/276:40 pmICN - ONT
2 stops40h 03mUnited Airlines
Wed 12/315:05 amONT - ICN
2 stops31h 35mUnited Airlines
Deal found 12/25$670
This United Airlines deal was found by Cheapflights users on 12/26. 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.
Sat 12/274:45 pmNRT - ONT
1 stop22h 56mUnited Airlines
Sat 1/36:10 amONT - NRT
1 stop40h 20mUnited Airlines
Deal found 12/26$670
This United Airlines deal was found by Cheapflights users on 12/27. 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 12/294:25 pmHND - ONT
1 stop23h 16mUnited Airlines
Fri 1/26:00 amONT - HND
1 stop15h 50mUnited Airlines
Deal found 12/27$674
This United Airlines deal was found by Cheapflights users on 12/27. 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 12/294:45 pmNRT - ONT
1 stop17h 58mUnited Airlines
Fri 1/210:42 amONT - NRT
1 stop35h 18mUnited Airlines
Deal found 12/27$675

Find flight deals from Asia to Ontario

Keep the following information in mind while searching for Asia to Ontario flight deals. Data was last updated December 28, 2025.

Most accurate provider

Justfly.com
3 stars

Most trusted provider

Justfly.com
3 stars

Round-trip from

$498
(United Airlines)

One-way from

$315
(United Airlines)

Popular in

January

Cheapest in

September

Average price

$818

Good round-trip deal

$767 or less

Good one-way deal

$521 or less
Provider with most accurate pricing for Manila Ninoy Aquino Intl-Los Angeles flight deals.
Search Deals
Provider most trusted by Cheapflights users for Manila Ninoy Aquino Intl-Los Angeles flights.
Search Deals
From Asia to Ontario
Search Deals
One-way flight from Asia to Ontario
Search Deals
Highest demand for flights based on searches. 8% potential increase in price ($71 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($24 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
Search Deals
Price to beat on a round-trip flight from Asia to Ontario.
Search Deals
Price to beat on a one-way flight from Asia to Ontario.
Search Deals

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 December 28, 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

Mon 2/23

12:45 pm-8:50 pm

2 stops25h 05m

Ontario

Fri 2/27

6:10 am-4:15 pm

1 stop17h 05m

$498

IncheonOntario

ICN - ONT

ICNONT

Incheon Intl

Mon 2/23

12:45 pm-12:43 pm

2 stops40h 58m

Ontario

Sat 2/28

1:45 pm-4:15 pm

2 stops33h 30m

$500

IncheonOntario

ICN - ONT

ICNONT

Incheon Intl

Sun 2/1

6:00 pm-5:43 pm

1 stop16h 43m

Ontario

Thu 2/5

6:39 pm-5:40 am

1 stop18h 01m

$500

IncheonOntario

ICN - ONT

ICNONT

Incheon Intl

Wed 2/18

12:45 pm-12:48 pm

1 stop17h 03m

Ontario

Wed 2/25

1:50 pm-5:40 am

1 stop22h 50m

$500

IncheonOntario

ICN - ONT

ICNONT

Incheon Intl

Tue 2/24

6:00 pm-5:41 pm

1 stop16h 41m

Ontario

Sat 2/28

1:45 pm-4:15 pm

2 stops33h 30m

$500

IncheonOntario

ICN - ONT

ICNONT

Incheon Intl

Fri 2/20

12:45 pm-8:50 pm

2 stops25h 05m

Ontario

Fri 2/27

6:10 am-4:15 pm

1 stop17h 05m

$500

IncheonOntario

ICN - ONT

ICNONT

Incheon Intl

Sun 1/25

6:00 pm-10:53 pm

1 stop21h 53m

Ontario

Sun 2/1

6:00 am-4:15 pm

1 stop17h 15m

$500

IncheonOntario

ICN - ONT

ICNONT

Incheon Intl

Wed 2/25

6:00 pm-5:41 pm

1 stop16h 41m

Ontario

Sun 3/1

1:50 pm-5:40 am

1 stop22h 50m

$500

IncheonOntario

ICN - ONT

ICNONT

Incheon Intl

Thu 1/22

6:00 pm-8:58 pm

2 stops19h 58m

Ontario

Sun 1/25

6:00 am-4:15 pm

1 stop17h 15m

$500

IncheonOntario

ICN - ONT

ICNONT

Incheon Intl

Mon 1/26

12:45 pm-11:18 am

1 stop15h 33m

Ontario

Sat 1/31

6:00 am-4:15 pm

1 stop17h 15m

$500

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/28

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, December is the cheapest month in which you can book a flight from Asia to Ontario (average of $253). Flying from Asia to Ontario in May is currently the most expensive (average of $437). 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 December 28, 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 December 28, 2025.
See what other customers who have flown with STARLUX Airlines, China Airlines, and United Airlines 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
8.9
Very good
250 reviews

Crew

9.1

Food

8.6

Comfort

8.8

Overall

8.9

Boarding

8.9

Entertainment

8.8

Reviews

1 / 9
10.0
Excellent

Chad,Nov 2025

TPE - SEA

Starlux Airlines was amazing. No complaints on anything with them
STARLUX Airlines
8.9
Very good
250 reviews
STARLUX Airlines
8.9
Very good
250 reviews

Crew

9.1

Food

8.6

Comfort

8.8

Overall

8.9

Boarding

8.9

Entertainment

8.8

Reviews

1 / 9
10.0
Excellent

Chad,Nov 2025

TPE - SEA

Starlux Airlines was amazing. No complaints on anything with them
China Airlines
8.3
Very good
795 reviews
STARLUX Airlines
8.9
Very good
250 reviews

Crew

9.1

Food

8.6

Comfort

8.8

Overall

8.9

Boarding

8.9

Entertainment

8.8

Reviews

1 / 9
10.0
Excellent

Chad,Nov 2025

TPE - SEA

Starlux Airlines was amazing. No complaints on anything with them
United Airlines
7.4
Good
9,114 reviews
STARLUX Airlines
8.9
Very good
250 reviews

Crew

9.1

Food

8.6

Comfort

8.8

Overall

8.9

Boarding

8.9

Entertainment

8.8

Reviews

1 / 9
10.0
Excellent

Chad,Nov 2025

TPE - SEA

Starlux Airlines was amazing. No complaints on anything with them

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.

  • How long is the flight from Asia to Ontario?

    United Airlines, STARLUX Airlines, and China Airlines can get you from Asia to Ontario in just under 15h 55m. Your travel time can differ by up to 9h 10m. The distance between Asia and Ontario is about 7327 mi. This flight may include one or multiple stops.

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

    $346 is the cheapest one-way deal found within the past few days, from United Airlines. You may also be able to find cheap deals on Hawaiian Airlines and STARLUX Airlines, with prices starting from $367 and $369, respectively.

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

    When deciding which route to take from Asia to Ontario consider Taipei City Taiwan Taoyuan Intl - Ontario, Tokyo Narita - Ontario or Manila Ninoy Aquino Intl - 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, December is the cheapest month in which you can book a flight from Asia to Ontario (average of $253). Flying from Asia to Ontario in May is currently the most expensive (average of $437). 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

See prices for flight routes from nearby airports that may be better suited for you.
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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 December 28, 2025.
AirlineCheapestAverageFlexibilityOn-time
STARLUX AirlinesCheapest$339Average$937FlexibilityNo cancel feeOn-timeN/A
China AirlinesCheapest$683Average$872FlexibilityNo cancel feeOn-time70%

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