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

$428 is the cheapest one-way deal found within the past few days, from Korean Air. You may also be able to find cheap deals on United Airlines and China Airlines, with prices starting from $430 and $445, 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 - Manila Ninoy Aquino Intl.

How far in advance should I book a flight from Ontario to Asia?

To save up to 21% on this flight, we recommend booking at least 49 days prior to travel. The price may fluctuate and will likely increase closer to your departure date. Users on Cheapflights have found tickets from Ontario to Asia from $1,035 1-2 weeks out and tickets from $1,165 for flights departing within the next 72 hours.

What is the cheapest month to fly from Ontario to Asia?

The best pricing can be found in the month of February. Prices to Asia from Ontario average $1,032. You can even find prices in February for less than $1,032, as users have found deals to Asia from as low as $685. The month of December appears to be one of the more expensive times to travel to Asia from Ontario. Flying in the targeted month can save you up to 54%.

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.

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.

$713+ Save on Flights from Ontario to Asia

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We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

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Cheap flight deals from Ontario to Asia

Most accurate provider	FlightHub 3 stars
Most trusted provider	FlightHub 3 stars
Round-trip from	$759 (Delta)
One-way from	$338 (Trip.com)
Popular in	December
Cheapest in	February
Average price	$853
Good round-trip deal	$847 or less
Good one-way deal	$468 or less

Provider with most accurate pricing for Los Angeles-Manila Ninoy Aquino Intl flight deals.

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Provider most trusted by Cheapflights users for Los Angeles-Manila Ninoy Aquino Intl flights.

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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. 8% potential increase in price ($97 potential increase over avg. RT price).

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Cheapest flight prices on average. 5% potential price decrease ($52 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 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 March 25, 2025.

Sun 5/48:24 amONT - NRT

1 stop19h 36mMultiple Airlines

Sat 5/109:30 pmNRT - ONT

1 stop28h 32mMultiple Airlines

Deal found 3/23

$715

Fri 10/316:00 amONT - TPE

2 stops23h 05mDelta

Thu 11/610:45 amTPE - ONT

2 stops17h 38mDelta

Deal found 3/24

$759

Wed 9/2411:59 pmONT - HND

1 stop23h 56mAmerican Airlines

Wed 10/87:45 pmHND - ONT

2 stops17h 55mAmerican Airlines

Deal found 3/23

$762

Thu 9/116:48 amONT - NRT

2 stops17h 57mAmerican Airlines

Thu 9/186:30 pmNRT - ONT

1 stop21h 06mAmerican Airlines

Deal found 3/23

$763

Wed 4/2312:10 amONT - MNL

1 stop24h 40mChina Airlines

Tue 5/134:50 pmMNL - ONT

1 stop16h 10mChina Airlines

Deal found 3/24

$769

Sun 4/2712:10 amONT - TPE

Nonstop14h 05mChina Airlines

Tue 5/139:10 pmTPE - ONT

Nonstop11h 50mChina Airlines

Deal found 3/24

$776

Thu 4/245:45 amONT - BKK

2 stops27h 55mKorean Air

Sun 5/49:50 amBKK - ONT

2 stops44h 54mKorean Air

Deal found 3/24

$783

Tue 10/76:00 amONT - HND

1 stop15h 55mUnited Airlines

Tue 10/149:55 pmHND - ONT

2 stops40h 58mUnited Airlines

Deal found 3/24

$785

Mon 4/215:45 amONT - BKK

2 stops26h 00mDelta

Sat 5/249:50 amBKK - ONT

2 stops22h 30mDelta

Deal found 3/24

$787

Tue 9/212:45 amONT - SGN

1 stop18h 55mChina Airlines

Tue 10/2110:50 amSGN - ONT

1 stop21h 10mChina Airlines

Deal found 3/24

$790

Mon 9/86:00 amONT - NRT

1 stop17h 25mUnited Airlines

Mon 9/225:00 pmNRT - ONT

1 stop21h 53mUnited Airlines

Deal found 3/24

$800

Sat 4/1911:45 amONT - SGN

2 stops45h 30mDelta

Sat 5/311:55 pmSGN - ONT

2 stops42h 25mDelta

Deal found 3/24

$812

Best flights from Ontario to Asia
Discover carefully curated flight deals from Ontario to Asia that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated March 25, 2025.

Tue 4/2211:45 amONT - TPE

1 stop17h 10mDelta

Wed 5/219:35 amTPE - ONT

2 stops17h 40mDelta

Deal found 3/24

$759

Sun 4/2712:10 amONT - MNL

1 stop18h 25mChina Airlines

Tue 5/1310:35 amMNL - ONT

1 stop22h 25mChina Airlines

Deal found 3/24

$763

Mon 9/86:36 pmONT - HND

1 stop17h 54mUnited Airlines

Mon 9/229:55 pmHND - ONT

2 stops30h 18mUnited Airlines

Deal found 3/24

$785

Sun 4/2012:50 pmONT - HND

1 stop33h 50mAmerican Airlines

Tue 5/610:55 amHND - ONT

1 stop18h 57mAmerican Airlines

Deal found 3/24

$811

Mon 4/215:45 amONT - BKK

2 stops26h 00mKorean Air

Wed 5/711:30 pmBKK - ONT

2 stops32h 50mKorean Air

Deal found 3/24

$816

Mon 9/88:35 amONT - HND

1 stop18h 55mHawaiian Airlines

Wed 9/249:20 pmHND - ONT

1 stop15h 50mHawaiian Airlines

Deal found 3/24

$818

Wed 8/2710:00 amONT - NRT

1 stop13h 25mMultiple Airlines

Fri 9/125:00 pmNRT - ONT

1 stop16h 42mMultiple Airlines

Deal found 3/24

$823

Tue 8/266:00 amONT - NRT

1 stop18h 00mAlaska Airlines

Fri 9/56:25 pmNRT - ONT

1 stop21h 34mAlaska Airlines

Deal found 3/24

$825

Sun 4/206:00 amONT - NRT

1 stop17h 00mBritish Airways

Tue 5/65:20 pmNRT - ONT

2 stops22h 23mBritish Airways

Deal found 3/24

$836

Wed 8/1311:45 pmONT - SGN

1 stop20h 30mSTARLUX Airlines

Wed 10/2211:30 amSGN - ONT

1 stop19h 35mSTARLUX Airlines

Deal found 3/24

$862

Fri 9/1211:39 amONT - BKK

2 stops29h 41mQatar Airways

Mon 9/228:00 pmBKK - ONT

2 stops41h 59mQatar Airways

Deal found 3/24

$1,038

Tue 5/2711:46 amONT - ICN

2 stops38h 59mWestJet

Thu 6/128:45 pmICN - ONT

2 stops36h 20mWestJet

Deal found 3/25

$1,491

Last-minute flights from Ontario to Asia
Discover last-minute flight deals from Ontario to Asia. Data last updated March 25, 2025 and is based on user searches.

Sun 3/305:40 amONT - BKK

2 stops28h 00mKorean Air

Wed 5/711:30 pmBKK - ONT

2 stops32h 50mKorean Air

Deal found 3/24

$871

Mon 3/3112:10 amONT - TPE

Nonstop14h 05mChina Airlines

Tue 5/2011:30 pmTPE - ONT

Nonstop11h 50mChina Airlines

Deal found 3/24

$788

Mon 3/313:55 pmONT - SGN

2 stops42h 20mUnited Airlines

Sun 5/1811:15 pmSGN - ONT

2 stops27h 09mUnited Airlines

Deal found 3/24

$825

Mon 3/316:39 pmONT - TPE

1 stop18h 26mUnited Airlines

Tue 4/152:15 pmTPE - ONT

1 stop15h 35mUnited Airlines

Deal found 3/24

$849

Mon 3/315:40 amONT - SGN

2 stops26h 25mKorean Air

Sun 5/187:35 amSGN - ONT

2 stops24h 45mKorean Air

Deal found 3/24

$860

Mon 3/315:00 amONT - MNL

2 stops33h 55mUnited Airlines

Thu 4/108:40 amMNL - ONT

2 stops45h 37mUnited Airlines

Deal found 3/23

$865

Tue 4/15:15 pmONT - TPE

2 stops35h 40mDelta

Tue 4/229:25 amTPE - ONT

1 stop16h 40mDelta

Deal found 3/24

$759

Tue 4/112:10 amONT - BKK

1 stop22h 00mChina Airlines

Tue 4/152:40 amBKK - ONT

1 stop29h 20mChina Airlines

Deal found 3/24

$842

Tue 4/112:10 amONT - SGN

1 stop26h 10mChina Airlines

Thu 4/2410:50 amSGN - ONT

1 stop21h 10mChina Airlines

Deal found 3/24

$848

Tue 4/17:05 amONT - NRT

1 stop15h 35mUnited Airlines

Tue 4/85:00 pmNRT - ONT

1 stop13h 50mUnited Airlines

Deal found 3/23

$892

Tue 4/16:00 amONT - TPE

2 stops22h 55mDelta

Tue 4/229:25 amTPE - ONT

2 stops29h 16mDelta

Deal found 3/24

$759

Wed 4/212:10 amONT - MNL

1 stop24h 40mChina Airlines

Thu 4/244:50 pmMNL - ONT

1 stop16h 10mChina Airlines

Deal found 3/24

$772

One-way flights from Ontario to Asia
Search for one-way flight options from Ontario to Asia. Find affordable one-way fares based on user searches. Data last updated March 25, 2025.

Fri 4/258:10 amONT - NRT

1 stop19h 50mMultiple Airlines

Deal found 3/24

$338

Sat 5/108:24 amONT - ICN

1 stop20h 06mMultiple Airlines

Deal found 3/24

$423

Tue 4/15:40 amONT - MNL

2 stops25h 25mKorean Air

Deal found 3/23

$428

Tue 4/16:00 amONT - SGN

2 stops28h 15mUnited Airlines

Deal found 3/24

$430

Sat 8/307:00 amONT - NRT

2 stops22h 05mKorean Air

Deal found 3/25

$437

Mon 3/3112:10 amONT - MNL

1 stop18h 25mChina Airlines

Deal found 3/24

$445

Thu 4/36:00 amONT - TPE

1 stop21h 45mUnited Airlines

Deal found 3/24

$448

Tue 4/2212:10 amONT - SGN

1 stop19h 30mChina Airlines

Deal found 3/24

$449

Sun 3/306:00 amONT - TPE

2 stops22h 55mDelta

Deal found 3/23

$450

Mon 7/216:00 amONT - NRT

1 stop17h 25mUnited Airlines

Deal found 3/24

$451

Mon 5/51:45 pmONT - BKK

2 stops48h 50mUnited Airlines

Deal found 3/25

$454

Sun 3/305:00 amONT - MNL

2 stops33h 55mUnited Airlines

Deal found 3/24

$456

Cheapflights Fare Finder

Use the filters below to find and compare flights from Ontario to Asia that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

OntarioTokyo

ONT - NRT

ONTNRT

Ontario

Sun 5/4

8:24 am-8:00 pm

1 stop19h 36m

Tokyo Narita

Sat 5/10

9:30 pm-10:02 am

1 stop28h 32m

$715

OntarioTaipei City

ONT - TPE

ONTTPE

Ontario

Sun 4/20

5:15 pm-7:55 pm

2 stops35h 40m

Taipei City Taiwan Taoyuan Intl

Tue 5/6

9:25 am-11:41 pm

2 stops29h 16m

$759

OntarioManila

ONT - MNL

ONTMNL

Ontario

Wed 4/23

12:10 am-3:50 pm

1 stop24h 40m

Manila Ninoy Aquino Intl

Tue 5/13

4:50 pm-6:00 pm

1 stop16h 10m

$769

OntarioTaipei City

ONT - TPE

ONTTPE

Ontario

Sun 4/27

12:10 am-5:15 am

Nonstop14h 05m

Taipei City Taiwan Taoyuan Intl

Tue 5/13

9:10 pm-6:00 pm

Nonstop11h 50m

$776

OntarioBangkok

ONT - BKK

ONTBKK

Ontario

Thu 4/24

5:45 am-11:40 pm

2 stops27h 55m

Bangkok Suvarnabhumi

Sun 5/4

9:50 am-4:44 pm

2 stops44h 54m

$783

OntarioTokyo

ONT - HND

ONTHND

Ontario

Mon 9/8

5:45 am-7:00 pm

2 stops45h 15m

Tokyo Haneda

Mon 9/22

9:55 pm-12:13 pm

2 stops30h 18m

$785

OntarioBangkok

ONT - BKK

ONTBKK

Ontario

Mon 4/21

5:45 am-9:45 pm

2 stops26h 00m

Bangkok Suvarnabhumi

Sat 5/24

9:50 am-6:20 pm

2 stops22h 30m

$787

OntarioHo Chi Minh City

ONT - SGN

ONTSGN

Ontario

Tue 9/2

12:45 am-9:40 am

1 stop18h 55m

Ho Chi Minh City

Wed 10/22

10:50 am-6:00 pm

1 stop21h 10m

$790

OntarioTokyo

ONT - HND

ONTHND

Ontario

Sun 4/20

12:50 pm-2:40 pm

1 stop33h 50m

Tokyo Haneda

Tue 5/6

10:55 am-1:52 pm

1 stop18h 57m

$811

OntarioHo Chi Minh City

ONT - SGN

ONTSGN

Ontario

Sat 4/19

11:45 am-11:15 pm

2 stops45h 30m

Ho Chi Minh City

Sat 5/31

1:55 pm-6:20 pm

2 stops42h 25m

$812

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/24

Showing 1-10 of 60 results

...

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 $1,002). Flying from Ontario to Asia in June is currently the most expensive (average of $1,664). 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?

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

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

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

STARLUX Airlines

9.1

Wonderful

144 reviews

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

144 reviews

STARLUX Airlines

9.1

Wonderful

144 reviews

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

1,047 reviews

STARLUX Airlines

9.1

Wonderful

144 reviews

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

144 reviews

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

144 reviews

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

7,890 reviews

STARLUX Airlines

9.1

Wonderful

144 reviews

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

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?
$428 is the cheapest one-way deal found within the past few days, from Korean Air. You may also be able to find cheap deals on United Airlines and China Airlines, with prices starting from $430 and $445, 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 - Manila Ninoy Aquino Intl.
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 $1,002). Flying from Ontario to Asia in June is currently the most expensive (average of $1,664). 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

Browse thousands of different options on Cheapflights for your next trip

Top 10 airlines flying from Ontario to Asia

Airline	Cheapest	Average	Flexibility	On-time
United Airlines	Cheapest$486	Average$1,215	FlexibilityNo cancel fee	On-time69%
ZIPAIR	Cheapest$624	Average$770	FlexibilityNo cancel fee	On-timeN/A
Japan Airlines	Cheapest$683	Average$918	FlexibilityNo cancel fee	On-time79%
ANA	Cheapest$695	Average$1,050	FlexibilityNo cancel fee	On-time80%
Cathay Pacific	Cheapest$710	Average$959	FlexibilityNo cancel fee	On-time72%
American Airlines	Cheapest$712	Average$1,139	FlexibilityNo cancel fee	On-time71%
Asiana Airlines	Cheapest$720	Average$728	FlexibilityNo cancel fee	On-time76%
China Airlines	Cheapest$740	Average$1,035	FlexibilityNo cancel fee	On-time70%
EVA Air	Cheapest$780	Average$1,267	FlexibilityNo cancel fee	On-time74%
Korean Air	Cheapest$785	Average$1,017	FlexibilityNo cancel fee	On-time81%

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$338+ 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 4/25. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Ontario to Asia with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

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 March 25, 2025.

Most accurate provider

Most trusted provider

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Good round-trip deal

Good one-way deal

Find flight deals from Ontario to Asia

Cheapest flights from Ontario to AsiaExplore 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 March 25, 2025.

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 March 25, 2025.

Cheapflights Fare Finder

Use the filters below to find and compare flights from Ontario to Asia that are best for you.

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.

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?

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 March 25, 2025.

Rainfall in Asia by month

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

Temperature in Asia by month

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

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 March 25, 2025.

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?

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

What are the most popular routes from Ontario to Asia?

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

How can I find direct flights from Ontario to Asia?

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

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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Ontario to Asia

See prices for flight routes from nearby airports that may be better suited for you.

Top 10 airlines flying from Ontario to Asia

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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 March 25, 2025.