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Ontario

$344+ 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 3/16. Fares are subject to change and may not be available on all flights or dates of travel.
BKK — ONT
Mar 14 — Mar 211
Sat 3/14
Sat 3/21
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 February 12, 2026.

This United Airlines deal was found by Cheapflights users on 2/9. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 2/1512:45 pm
ICN
-
ONT
1 stop21h 56m
United Airlines
Wed 4/1511:05 am
ONT
-
ICN
1 stop25h 15m
United Airlines
Deal found 2/9$510
This United Airlines deal was found by Cheapflights users on 2/10. 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.
Mon 2/166:00 pm
ICN
-
ONT
2 stops35h 43m
United Airlines
Mon 2/239:06 pm
ONT
-
ICN
1 stop26h 09m
United Airlines
Deal found 2/10$511
This United Airlines deal was found by Cheapflights users on 2/10. 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.
Sun 2/156:00 pm
ICN
-
ONT
1 stop21h 57m
United Airlines
Tue 4/216:00 am
ONT
-
ICN
1 stop30h 20m
United Airlines
Deal found 2/10$512
This United Airlines deal was found by Cheapflights users on 2/9. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/1212:45 pm
ICN
-
ONT
1 stop16h 53m
United Airlines
Mon 2/239:06 pm
ONT
-
ICN
1 stop26h 09m
United Airlines
Deal found 2/9$518
This Kissandfly.com deal was found by Cheapflights users on 2/10. 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 Kissandfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 2/166:00 pm
ICN
-
ONT
1 stop18h 54m
Lufthansa
Wed 3/46:09 am
ONT
-
ICN
1 stop17h 06m
Lufthansa
Deal found 2/10$528
This Gurufare deal was found by Cheapflights users on 2/10. 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 Gurufare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/1912:45 pm
ICN
-
ONT
1 stop16h 53m
Asiana Airlines
Sun 5/31:30 pm
ONT
-
ICN
1 stop22h 50m
Asiana Airlines
Deal found 2/10$529
This Hanatour deal was found by Cheapflights users on 2/8. 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 Hanatour is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/98:35 pm
ICN
-
ONT
1 stop19h 24m
Hawaiian Airlines
Mon 4/136:00 am
ONT
-
ICN
1 stop20h 35m
Hawaiian Airlines
Deal found 2/8$579
This United Airlines deal was found by Cheapflights users on 2/11. 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.
Tue 3/1011:45 am
ICN
-
ONT
1 stop16h 33m
United Airlines
Mon 8/106:00 am
ONT
-
ICN
1 stop17h 00m
United Airlines
Deal found 2/11$580
This Alaska Airlines deal was found by Cheapflights users on 2/9. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 2/238:35 pm
ICN
-
ONT
1 stop31h 33m
Multiple Airlines
Sat 2/284:02 pm
ONT
-
ICN
1 stop33h 33m
Multiple Airlines
Deal found 2/9$593
This Alaska Airlines deal was found by Cheapflights users on 2/8. 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.
Fri 2/208:35 pm
ICN
-
ONT
1 stop19h 57m
Multiple Airlines
Mon 5/46:00 am
ONT
-
ICN
1 stop19h 30m
Multiple Airlines
Deal found 2/8$601
This Agoda.com deal was found by Cheapflights users on 2/11. 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 Agoda.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/411:50 am
MNL
-
ONT
1 stop20h 00m
STARLUX Airlines
Wed 3/49:45 pm
ONT
-
MNL
1 stop21h 20m
STARLUX Airlines
Deal found 2/11$629
This Trip.com deal was found by Cheapflights users on 2/11. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/2710:45 am
MNL
-
ONT
1 stop21h 20m
STARLUX Airlines
Mon 5/1111:10 pm
ONT
-
MNL
1 stop19h 20m
STARLUX Airlines
Deal found 2/11$636

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 February 12, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$510
(United Airlines)

One-way from

$344
(Kiwi.com)

Popular in

August

Cheapest in

September

Average price

$738

Good round-trip deal

$725 or less

Good one-way deal

$465 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. 6% potential increase in price ($51 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($11 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in February 2026
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 February 12, 2026.
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 2/26

6:00 pm-5:41 pm

1 stop16h 41m

Ontario

Wed 3/4

1:45 pm-5:40 am

2 stops22h 55m

$510

IncheonOntario

ICN - ONT

ICNONT

Incheon Intl

Wed 3/4

12:45 pm-10:57 pm

1 stop27h 12m

Ontario

Sun 3/8

6:15 am-4:40 am

1 stop30h 25m

$510

IncheonOntario

ICN - ONT

ICNONT

Incheon Intl

Tue 5/12

4:50 pm-5:52 pm

1 stop17h 02m

Ontario

Thu 7/9

1:33 pm-4:20 am

1 stop22h 47m

$510

IncheonOntario

ICN - ONT

ICNONT

Incheon Intl

Sat 2/21

12:45 pm-5:41 pm

1 stop21h 56m

Ontario

Sun 5/3

6:00 am-3:00 pm

1 stop17h 00m

$511

IncheonOntario

ICN - ONT

ICNONT

Incheon Intl

Mon 2/23

8:35 pm-11:32 pm

1 stop19h 57m

Ontario

Sat 2/28

4:02 pm-6:35 pm

1 stop33h 33m

$593

IncheonOntario

ICN - ONT

ICNONT

Incheon Intl

Wed 5/27

7:35 pm-6:47 pm

1 stop15h 12m

Ontario

Thu 6/4

6:00 am-5:30 pm

1 stop19h 30m

$601

IncheonOntario

ICN - ONT

ICNONT

Incheon Intl

Sat 2/21

8:35 pm-11:32 pm

1 stop19h 57m

Ontario

Fri 5/1

6:00 am-5:30 pm

1 stop19h 30m

$601

TokyoOntario

NRT - ONT

NRTONT

Tokyo Narita

Tue 2/24

5:45 pm-10:00 pm

1 stop21h 15m

Ontario

Sat 2/28

6:00 am-3:30 pm

1 stop40h 30m

$646

TokyoOntario

NRT - ONT

NRTONT

Tokyo Narita

Fri 2/27

4:45 pm-12:38 pm

1 stop12h 53m

Ontario

Mon 3/2

9:06 pm-3:00 pm

1 stop24h 54m

$646

IncheonOntario

ICN - ONT

ICNONT

Incheon Intl

Wed 5/6

7:35 pm-10:32 pm

1 stop18h 57m

Ontario

Thu 7/9

6:00 am-5:30 pm

1 stop19h 30m

$650

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/9

Showing 1-10 of 60 results
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2
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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 August is currently the most expensive (average of $443). 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 February 12, 2026.

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 February 12, 2026.
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
273 reviews

Crew

9.2

Comfort

8.9

Overall

8.9

Boarding

8.9

Entertainment

8.8

Food

8.7

Reviews

1 / 10
10.0
Excellent

Anonymous,Jan 2026

SEA - TPE

First time travelled with starlux and had best experience. Food was really good and crew is the best. Entertainment was also best. Having latest movies. I requested for isle seat at the last time and they provided me. Best airline service.
STARLUX Airlines
8.9
Very good
273 reviews
STARLUX Airlines
8.9
Very good
273 reviews

Crew

9.2

Comfort

8.9

Overall

8.9

Boarding

8.9

Entertainment

8.8

Food

8.7

Reviews

1 / 10
10.0
Excellent

Anonymous,Jan 2026

SEA - TPE

First time travelled with starlux and had best experience. Food was really good and crew is the best. Entertainment was also best. Having latest movies. I requested for isle seat at the last time and they provided me. Best airline service.
China Airlines
8.3
Very good
804 reviews
STARLUX Airlines
8.9
Very good
273 reviews

Crew

9.2

Comfort

8.9

Overall

8.9

Boarding

8.9

Entertainment

8.8

Food

8.7

Reviews

1 / 10
10.0
Excellent

Anonymous,Jan 2026

SEA - TPE

First time travelled with starlux and had best experience. Food was really good and crew is the best. Entertainment was also best. Having latest movies. I requested for isle seat at the last time and they provided me. Best airline service.
United Airlines
7.4
Good
9,276 reviews
STARLUX Airlines
8.9
Very good
273 reviews

Crew

9.2

Comfort

8.9

Overall

8.9

Boarding

8.9

Entertainment

8.8

Food

8.7

Reviews

1 / 10
10.0
Excellent

Anonymous,Jan 2026

SEA - TPE

First time travelled with starlux and had best experience. Food was really good and crew is the best. Entertainment was also best. Having latest movies. I requested for isle seat at the last time and they provided me. Best airline service.

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, China Airlines, and STARLUX Airlines can get you from Asia to Ontario in just under 15h 25m. Your travel time can differ by up to 3h 30m. The distance between Asia and Ontario is about 7273 mi. This flight may include one or multiple stops.

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

    $338 is the cheapest one-way deal found within the past few days, from STARLUX Airlines. You may also be able to find cheap deals on United Airlines and Hawaiian Airlines, with prices starting from $346 and $367, respectively.

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

    When deciding which route to take from Asia to Ontario consider Incheon Intl - Ontario, Taipei City Taiwan Taoyuan Intl - Ontario or Tokyo Narita - 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 August is currently the most expensive (average of $443). 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 February 12, 2026.
AirlineCheapestAverageFlexibilityOn-time
STARLUX AirlinesCheapest$339Average$917FlexibilityNo cancel feeOn-timeN/A
China AirlinesCheapest$683Average$871FlexibilityNo cancel feeOn-time70%

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