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

$397 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 Korean Air and Delta, with prices starting from $404 and $410, 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 20% 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 $998 1-2 weeks out and tickets from $1,152 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 March. Prices to Asia from Ontario average $1,021. You can even find prices in March for less than $1,021, as users have found deals to Asia from as low as $682. 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 56%.

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.

$693+ Flights from Ontario to Asia

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Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

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	AranGrant 3 stars
Most trusted provider	AranGrant 3 stars
Round-trip from	$686 (Trip.com)
One-way from	$331 (Trip.com)
Popular in	December
Cheapest in	March
Average price	$859
Good round-trip deal	$863 or less
Good one-way deal	$487 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. 9% potential increase in price ($104 potential increase over avg. RT price).

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Cheapest flight prices on average. 5% potential price decrease ($53 potential savings vs. average RT price).

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Average for round-trip flights in April 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 April 15, 2025.

Mon 5/198:24 amONT - NRT

1 stop19h 36mMultiple Airlines

Sat 5/249:30 pmNRT - ONT

1 stop18h 06mMultiple Airlines

Deal found 4/15

$686

Mon 11/37:00 amONT - BKK

2 stops23h 30mKorean Air

Sun 11/161:00 amBKK - ONT

2 stops27h 18mKorean Air

Deal found 4/14

$723

Mon 4/285:45 amONT - BKK

2 stops26h 00mDelta

Mon 5/1211:30 pmBKK - ONT

2 stops32h 50mDelta

Deal found 4/15

$731

Sun 10/1212:10 amONT - TPE

Nonstop14h 05mChina Airlines

Mon 10/209:10 pmTPE - ONT

Nonstop11h 50mChina Airlines

Deal found 4/15

$736

Fri 9/127:00 amONT - TPE

1 stop21h 55mDelta

Sun 10/59:35 amTPE - ONT

1 stop16h 15mDelta

Deal found 4/15

$754

Fri 10/1012:10 amONT - MNL

1 stop18h 25mChina Airlines

Sun 10/194:00 amMNL - ONT

1 stop29h 00mChina Airlines

Deal found 4/14

$757

Thu 5/15:45 amONT - MNL

2 stops27h 14mKorean Air

Wed 5/141:10 amMNL - ONT

2 stops32h 10mKorean Air

Deal found 4/14

$758

Sat 4/265:45 amONT - TPE

2 stops45h 05mKorean Air

Thu 5/86:55 pmTPE - ONT

2 stops38h 25mKorean Air

Deal found 4/14

$773

Thu 8/1412:45 amONT - SGN

1 stop34h 20mChina Airlines

Mon 10/272:05 amSGN - ONT

1 stop29h 45mChina Airlines

Deal found 4/14

$777

Sat 10/257:00 amONT - SIN

2 stops31h 00mKorean Air

Sun 11/21:30 amSIN - ONT

2 stops27h 48mKorean Air

Deal found 4/15

$782

Mon 9/2212:10 amONT - BKK

1 stop22h 00mChina Airlines

Thu 10/91:20 pmBKK - ONT

1 stop18h 40mChina Airlines

Deal found 4/15

$787

Sun 8/107:00 amONT - SGN

2 stops25h 05mKorean Air

Tue 10/288:05 amSGN - ONT

2 stops28h 37mKorean Air

Deal found 4/14

$788

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 April 15, 2025.

Mon 5/198:24 amONT - NRT

1 stop19h 36mMultiple Airlines

Sat 5/249:30 pmNRT - ONT

1 stop18h 06mMultiple Airlines

Deal found 4/15

$686

Mon 4/285:45 amONT - BKK

2 stops26h 00mDelta

Mon 5/1211:30 pmBKK - ONT

2 stops32h 50mDelta

Deal found 4/15

$731

Tue 4/295:45 amONT - BKK

2 stops27h 55mKorean Air

Tue 5/2711:30 pmBKK - ONT

2 stops32h 50mKorean Air

Deal found 4/14

$754

Fri 10/1012:10 amONT - MNL

1 stop18h 25mChina Airlines

Sun 10/194:00 amMNL - ONT

1 stop29h 00mChina Airlines

Deal found 4/14

$757

Wed 8/2010:00 amONT - BKK

2 stops23h 55mUnited Airlines

Thu 8/289:35 amBKK - ONT

2 stops27h 18mUnited Airlines

Deal found 4/15

$804

Wed 8/2711:45 pmONT - TPE

Nonstop13h 30mSTARLUX Airlines

Wed 9/38:05 pmTPE - ONT

Nonstop12h 00mSTARLUX Airlines

Deal found 4/14

$838

Sun 9/286:48 amONT - HND

2 stops18h 37mAmerican Airlines

Wed 10/87:45 pmHND - ONT

2 stops17h 55mAmerican Airlines

Deal found 4/14

$885

Tue 9/98:35 amONT - HND

1 stop18h 55mHawaiian Airlines

Wed 9/248:15 pmHND - ONT

1 stop16h 55mHawaiian Airlines

Deal found 4/14

$941

Wed 9/108:35 amONT - HND

1 stop16h 35mAlaska Airlines

Wed 9/248:15 pmHND - ONT

1 stop16h 55mAlaska Airlines

Deal found 4/15

$947

Tue 9/2311:39 amONT - BKK

2 stops28h 36mQatar Airways

Tue 9/308:00 pmBKK - ONT

2 stops41h 59mQatar Airways

Deal found 4/14

$960

Tue 9/237:17 pmONT - SGN

2 stops26h 23mEVA Air

Sat 10/253:45 pmSGN - ONT

2 stops32h 54mEVA Air

Deal found 4/13

$1,021

Sat 4/266:00 amONT - NRT

1 stop17h 35mJapan Airlines

Thu 5/85:45 pmNRT - ONT

1 stop13h 47mJapan Airlines

Deal found 4/14

$1,036

Last-minute flights from Ontario to Asia
Discover last-minute flight deals from Ontario to Asia. Data last updated April 15, 2025 and is based on user searches.

Wed 4/166:00 amONT - SGN

2 stops25h 55mUnited Airlines

Tue 5/207:00 amSGN - ONT

2 stops27h 34mUnited Airlines

Deal found 4/14

$793

Sun 4/203:55 pmONT - BKK

2 stops42h 00mUnited Airlines

Sun 5/49:35 amBKK - ONT

2 stops48h 59mUnited Airlines

Deal found 4/13

$831

Mon 4/2112:10 amONT - BKK

1 stop22h 00mChina Airlines

Tue 5/131:20 pmBKK - ONT

1 stop18h 40mChina Airlines

Deal found 4/15

$834

Mon 4/217:05 amONT - TPE

1 stop20h 40mUnited Airlines

Wed 5/72:30 pmTPE - ONT

1 stop14h 55mUnited Airlines

Deal found 4/14

$844

Tue 4/225:45 amONT - BKK

2 stops26h 00mDelta

Thu 5/229:50 amBKK - ONT

2 stops22h 30mDelta

Deal found 4/14

$737

Tue 4/2212:10 amONT - MNL

1 stop24h 40mChina Airlines

Wed 5/144:50 pmMNL - ONT

1 stop16h 10mChina Airlines

Deal found 4/14

$761

Tue 4/225:45 amONT - MNL

2 stops27h 14mKorean Air

Wed 5/711:30 pmMNL - ONT

2 stops33h 50mKorean Air

Deal found 4/14

$768

Tue 4/2212:10 amONT - SGN

1 stop26h 10mChina Airlines

Tue 6/1010:50 amSGN - ONT

1 stop21h 10mChina Airlines

Deal found 4/14

$785

Wed 4/237:05 amONT - SGN

2 stops27h 10mUnited Airlines

Wed 5/217:00 amSGN - ONT

2 stops21h 25mUnited Airlines

Deal found 4/13

$796

Wed 4/235:45 amONT - SGN

2 stops40h 50mKorean Air

Tue 6/107:35 amSGN - ONT

2 stops29h 11mKorean Air

Deal found 4/14

$810

Wed 4/2312:10 amONT - TPE

Nonstop14h 05mChina Airlines

Wed 5/149:10 pmTPE - ONT

Nonstop11h 50mChina Airlines

Deal found 4/14

$824

Thu 4/245:45 amONT - TPE

1 stop23h 10mDelta

Wed 7/99:35 amTPE - ONT

1 stop16h 18mDelta

Deal found 4/14

$777

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 April 15, 2025.

Thu 4/248:10 amONT - NRT

1 stop19h 50mMultiple Airlines

Deal found 4/14

$331

Tue 4/226:00 amONT - SGN

2 stops28h 15mUnited Airlines

Deal found 4/14

$397

Thu 5/86:00 amONT - MNL

2 stops25h 05mKorean Air

Deal found 4/14

$404

Sat 5/178:24 amONT - HKG

2 stops36h 36mMultiple Airlines

Deal found 4/15

$408

Wed 4/306:00 amONT - TPE

2 stops22h 55mDelta

Deal found 4/14

$410

Sun 4/208:15 amONT - ICN

1 stop20h 15mMultiple Airlines

Deal found 4/15

$410

Sun 5/48:24 amONT - BKK

2 stops46h 46mMultiple Airlines

Deal found 4/15

$411

Mon 4/286:00 amONT - BKK

2 stops32h 35mUnited Airlines

Deal found 4/14

$418

Tue 4/225:45 amONT - TPE

2 stops45h 05mKorean Air

Deal found 4/14

$420

Wed 8/137:00 amONT - BKK

2 stops24h 45mKorean Air

Deal found 4/15

$424

Mon 4/288:10 amONT - SGN

2 stops35h 55mMultiple Airlines

Deal found 4/14

$433

Mon 4/2112:10 amONT - SGN

1 stop26h 10mChina Airlines

Deal found 4/14

$435

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

Mon 5/19

8:24 am-8:00 pm

1 stop19h 36m

Tokyo Narita

Sat 5/24

9:30 pm-11:36 pm

1 stop18h 06m

$686

OntarioBangkok

ONT - BKK

ONTBKK

Ontario

Mon 4/28

5:45 am-9:45 pm

2 stops26h 00m

Bangkok Suvarnabhumi

Mon 5/12

11:30 pm-6:20 pm

2 stops32h 50m

$731

OntarioTaipei City

ONT - TPE

ONTTPE

Ontario

Sun 10/12

12:10 am-5:15 am

Nonstop14h 05m

Taipei City Taiwan Taoyuan Intl

Mon 10/20

9:10 pm-6:00 pm

Nonstop11h 50m

$736

OntarioBangkok

ONT - BKK

ONTBKK

Ontario

Tue 4/29

5:45 am-11:40 pm

2 stops27h 55m

Bangkok Suvarnabhumi

Mon 5/26

2:35 am-6:20 pm

2 stops29h 45m

$754

OntarioTaipei City

ONT - TPE

ONTTPE

Ontario

Fri 9/12

7:00 am-7:55 pm

1 stop21h 55m

Taipei City Taiwan Taoyuan Intl

Sun 10/5

9:35 am-10:50 am

1 stop16h 15m

$754

OntarioManila

ONT - MNL

ONTMNL

Ontario

Thu 7/31

12:45 am-3:50 pm

1 stop24h 05m

Manila Ninoy Aquino Intl

Sun 8/31

4:50 pm-6:40 pm

1 stop16h 50m

$757

OntarioManila

ONT - MNL

ONTMNL

Ontario

Thu 5/8

6:00 am-10:05 pm

2 stops25h 05m

Manila Ninoy Aquino Intl

Sun 6/22

11:30 pm-10:46 pm

2 stops38h 16m

$765

OntarioTaipei City

ONT - TPE

ONTTPE

Ontario

Sat 4/26

5:45 am-5:50 pm

2 stops45h 05m

Taipei City Taiwan Taoyuan Intl

Thu 5/8

6:55 pm-6:20 pm

2 stops38h 25m

$773

OntarioSingapore

ONT - SIN

ONTSIN

Ontario

Mon 9/1

7:00 am-11:40 pm

2 stops25h 40m

Singapore Changi

Fri 9/12

7:30 am-5:17 pm

2 stops24h 47m

$783

OntarioHo Chi Minh City

ONT - SGN

ONTSGN

Ontario

Tue 4/22

12:10 am-4:20 pm

1 stop26h 10m

Ho Chi Minh City

Tue 6/10

10:50 am-6:00 pm

1 stop21h 10m

$785

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/14

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 $1,001). Flying from Ontario to Asia in June is currently the most expensive (average of $1,650). 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

154 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

154 reviews

STARLUX Airlines

9.1

Wonderful

154 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.

EVA Air

8.4

Very good

1,176 reviews

STARLUX Airlines

9.1

Wonderful

154 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

1,063 reviews

STARLUX Airlines

9.1

Wonderful

154 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

154 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

729 reviews

STARLUX Airlines

9.1

Wonderful

154 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?
$397 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 Korean Air and Delta, with prices starting from $404 and $410, 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 $1,001). Flying from Ontario to Asia in June is currently the most expensive (average of $1,650). 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$1,203	FlexibilityNo cancel fee	On-time69%
ZIPAIR	Cheapest$591	Average$770	FlexibilityNo cancel fee	On-timeN/A
Japan Airlines	Cheapest$683	Average$1,068	FlexibilityNo cancel fee	On-time79%
ANA	Cheapest$686	Average$1,051	FlexibilityNo cancel fee	On-time80%
Cathay Pacific	Cheapest$704	Average$833	FlexibilityNo cancel fee	On-time72%
American Airlines	Cheapest$712	Average$1,121	FlexibilityNo cancel fee	On-time71%
Asiana Airlines	Cheapest$720	Average$727	FlexibilityNo cancel fee	On-time76%
China Airlines	Cheapest$741	Average$1,086	FlexibilityNo cancel fee	On-time70%
Korean Air	Cheapest$748	Average$995	FlexibilityNo cancel fee	On-time81%
EVA Air	Cheapest$780	Average$1,271	FlexibilityNo cancel fee	On-time74%

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$331+ 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 4/24. 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 April 15, 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 April 15, 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 April 15, 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 April 15, 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 April 15, 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 April 15, 2025.