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Ontario

$333+ 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 5/10. Fares are subject to change and may not be available on all flights or dates of travel.
ICN — ONT
Apr 1 — Apr 81
Tue 4/1
Tue 4/8
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 March 27, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$550
(United Airlines)

One-way from

$333
(Trip.com)

Popular in

July

Cheapest in

March

Average price

$739

Good round-trip deal

$875 or less

Good one-way deal

$588 or less
Provider with most accurate pricing for Manila Ninoy Aquino Intl-Los Angeles flight deals.
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Provider most trusted by Cheapflights users for Manila Ninoy Aquino Intl-Los Angeles flights.
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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. 17% potential increase in price ($187 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($25 potential savings vs. average RT price).
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Average for round-trip flights in March 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 March 27, 2025.

This United Airlines deal was found by Cheapflights users on 3/26. 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.
Thu 4/311:30 amICN - ONT
1 stop15h 35mUnited Airlines
Wed 4/166:00 amONT - ICN
1 stop17h 00mUnited Airlines
Deal found 3/26$549
This Kissandfly.com deal was found by Cheapflights users on 3/27. 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 Kissandfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/124:50 pmICN - ONT
1 stop19h 31mLufthansa
Wed 4/166:00 amONT - ICN
1 stop17h 00mLufthansa
Deal found 3/27$558
This Vliegwinkel deal was found by Cheapflights users on 3/26. 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 Vliegwinkel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/311:30 amICN - ONT
1 stop19h 20mAustrian Airlines
Wed 4/167:05 amONT - ICN
1 stop15h 55mAustrian Airlines
Deal found 3/26$576
This United Airlines deal was found by Cheapflights users on 3/26. 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.
Tue 4/19:50 amTPE - ONT
1 stop20h 00mUnited Airlines
Tue 4/87:05 amONT - TPE
1 stop20h 40mUnited Airlines
Deal found 3/26$691
This Kiwi.com deal was found by Cheapflights users on 3/26. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/109:30 pmNRT - ONT
1 stop28h 32mMultiple Airlines
Mon 5/128:24 amONT - NRT
1 stop19h 36mMultiple Airlines
Deal found 3/26$699
This Gotogate deal was found by Cheapflights users on 3/26. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/254:00 amMNL - ONT
1 stop29h 00mChina Airlines
Thu 5/112:10 amONT - MNL
1 stop33h 55mChina Airlines
Deal found 3/26$756
This Gotogate deal was found by Cheapflights users on 3/26. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/1410:50 amBKK - ONT
1 stop21h 10mChina Airlines
Sat 4/2612:10 amONT - BKK
1 stop26h 10mChina Airlines
Deal found 3/26$778
This Richmond deal was found by Cheapflights users on 3/27. 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 Richmond is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/18:05 pmTPE - ONT
Nonstop12h 00mSTARLUX Airlines
Sat 10/1111:10 pmONT - TPE
Nonstop14h 05mSTARLUX Airlines
Deal found 3/27$807
This United Airlines deal was found by Cheapflights users on 3/26. 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.
Wed 4/25:00 pmNRT - ONT
1 stop20h 58mUnited Airlines
Sun 4/66:10 amONT - NRT
1 stop39h 50mUnited Airlines
Deal found 3/26$822
This Gotogate deal was found by Cheapflights users on 3/26. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/1812:35 pmICN - ONT
1 stop21h 25mChina Airlines
Thu 10/2312:10 amONT - ICN
1 stop27h 25mChina Airlines
Deal found 3/26$853
This ezTravel 易遊網 deal was found by Cheapflights users on 3/26. 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 ezTravel 易遊網 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/99:10 pmTPE - ONT
Nonstop11h 50mChina Airlines
Tue 5/612:10 amONT - TPE
Nonstop14h 05mChina Airlines
Deal found 3/26$868
This iWofly deal was found by Cheapflights users on 3/26. 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 iWofly is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 6/15:50 pmBKK - ONT
1 stop37h 15mSTARLUX Airlines
Mon 6/3011:10 pmONT - BKK
1 stop27h 30mSTARLUX Airlines
Deal found 3/26$874

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 March 27, 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

Wed 4/9

11:30 am-11:05 am

1 stop15h 35m

Ontario

Sun 4/13

6:00 am-3:00 pm

1 stop17h 00m

$550

IncheonOntario

ICN - ONT

ICNONT

Incheon Intl

Sat 4/12

4:50 pm-8:21 pm

1 stop19h 31m

Ontario

Wed 4/16

6:00 am-3:00 pm

1 stop17h 00m

$558

Taipei CityOntario

TPE - ONT

TPEONT

Taipei City Taiwan Taoyuan Intl

Thu 4/10

2:25 pm-2:50 pm

1 stop15h 25m

Ontario

Thu 4/17

7:05 am-6:45 pm

1 stop20h 40m

$691

TokyoOntario

NRT - ONT

NRTONT

Tokyo Narita

Sat 5/10

9:30 pm-10:02 am

1 stop28h 32m

Ontario

Mon 5/12

8:24 am-8:00 pm

1 stop19h 36m

$699

ManilaOntario

MNL - ONT

MNLONT

Manila Ninoy Aquino Intl

Fri 4/25

4:00 am-6:00 pm

1 stop29h 00m

Ontario

Thu 5/1

12:10 am-1:05 am

1 stop33h 55m

$756

BangkokOntario

BKK - ONT

BKKONT

Bangkok Suvarnabhumi

Mon 4/14

10:50 am-6:00 pm

1 stop21h 10m

Ontario

Sat 4/26

12:10 am-4:20 pm

1 stop26h 10m

$778

IncheonOntario

ICN - ONT

ICNONT

Incheon Intl

Thu 4/17

8:35 pm-6:00 pm

1 stop37h 25m

Ontario

Sun 4/20

12:10 am-7:35 pm

1 stop27h 25m

$854

Taipei CityOntario

TPE - ONT

TPEONT

Taipei City Taiwan Taoyuan Intl

Wed 4/9

9:10 pm-6:00 pm

Nonstop11h 50m

Ontario

Tue 5/6

12:10 am-5:15 am

Nonstop14h 05m

$868

BangkokOntario

BKK - ONT

BKKONT

Bangkok Suvarnabhumi

Sun 6/1

5:50 pm-5:05 pm

1 stop37h 15m

Ontario

Mon 6/30

11:10 pm-4:40 pm

1 stop27h 30m

$874

IncheonOntario

ICN - ONT

ICNONT

Incheon Intl

Mon 6/2

9:25 pm-9:55 pm

1 stop16h 30m

Ontario

Tue 9/2

8:35 am-7:00 pm

1 stop18h 25m

$879

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/26

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 $326). 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 March 27, 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.

Rainfall in Ontario by month

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

In terms of precipitation, rainfall in Ontario ranges from 0.1 - 3.4 inches per month. February is typically the wettest month, when rainfall can reach 3.4 in. June is typically the driest time to visit Ontario when rainfall is around 0.1 in.

Temperature in Ontario by month

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

If weather is an important factor for your trip to Ontario, use this chart to help with planning. For those seeking warmer temperatures, August is the ideal time of year to visit, when temperatures reach an average of 78.8 F. Travelers looking to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 53.6 F).

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 March 27, 2025.
STARLUX Airlines
9.1
Wonderful
146 reviews

Boarding

9.0

Comfort

9.0

Overall

9.1

Crew

9.3

Food

8.9

Entertainment

9.0

Reviews

1 / 5
10.0
Excellent

Andrew,Jan 2025

LAX - TPE

Crew were attentive from start to finish. Each meal was amazing. IFE screen was huge and had quite a bit of western movies, however the tv shows were lacking.
STARLUX Airlines
9.1
Wonderful
146 reviews
STARLUX Airlines
9.1
Wonderful
146 reviews

Boarding

9.0

Comfort

9.0

Overall

9.1

Crew

9.3

Food

8.9

Entertainment

9.0

Reviews

1 / 5
10.0
Excellent

Andrew,Jan 2025

LAX - TPE

Crew were attentive from start to finish. Each meal was amazing. IFE screen was huge and had quite a bit of western movies, however the tv shows were lacking.
Korean Air
8.4
Very good
1,050 reviews
STARLUX Airlines
9.1
Wonderful
146 reviews

Boarding

9.0

Comfort

9.0

Overall

9.1

Crew

9.3

Food

8.9

Entertainment

9.0

Reviews

1 / 5
10.0
Excellent

Andrew,Jan 2025

LAX - TPE

Crew were attentive from start to finish. Each meal was amazing. IFE screen was huge and had quite a bit of western movies, however the tv shows were lacking.
Japan Airlines
8.3
Very good
1,440 reviews
STARLUX Airlines
9.1
Wonderful
146 reviews

Boarding

9.0

Comfort

9.0

Overall

9.1

Crew

9.3

Food

8.9

Entertainment

9.0

Reviews

1 / 5
10.0
Excellent

Andrew,Jan 2025

LAX - TPE

Crew were attentive from start to finish. Each meal was amazing. IFE screen was huge and had quite a bit of western movies, however the tv shows were lacking.
China Airlines
8.2
Very good
722 reviews
STARLUX Airlines
9.1
Wonderful
146 reviews

Boarding

9.0

Comfort

9.0

Overall

9.1

Crew

9.3

Food

8.9

Entertainment

9.0

Reviews

1 / 5
10.0
Excellent

Andrew,Jan 2025

LAX - TPE

Crew were attentive from start to finish. Each meal was amazing. IFE screen was huge and had quite a bit of western movies, however the tv shows were lacking.
Delta
8.0
Very good
7,895 reviews
STARLUX Airlines
9.1
Wonderful
146 reviews

Boarding

9.0

Comfort

9.0

Overall

9.1

Crew

9.3

Food

8.9

Entertainment

9.0

Reviews

1 / 5
10.0
Excellent

Andrew,Jan 2025

LAX - TPE

Crew were attentive from start to finish. Each meal was amazing. IFE screen was huge and had quite a bit of western movies, however the tv shows were lacking.

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?

    $437 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 Alaska Airlines and Hawaiian Airlines, with prices starting from $455 and $457, 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 Incheon 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, 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 $326). 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 March 27, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$674Average$782FlexibilityNo cancel feeOn-time69%
China AirlinesCheapest$736Average$974FlexibilityNo cancel feeOn-time70%
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