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

$378 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 Delta, with prices starting from $394 and $396, 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 $999 1-2 weeks out and tickets from $1,155 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 $1,019. You can even find prices in March for less than $1,019, 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 55%.

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.

$717+ Flights from Ontario to Asia

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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	$764 (United Airlines)
One-way from	$378 (Justfly.com)
Popular in	December
Cheapest in	March
Average price	$1,092
Good round-trip deal	$863 or less
Good one-way deal	$481 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 ($103 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 May 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 May 1, 2025.

Sun 5/42:35 pmONT - DEL

2 stops22h 50mDelta

Tue 5/272:05 amDEL - ONT

2 stops32h 54mDelta

Deal found 5/1

$723

Wed 8/137:00 amONT - SIN

2 stops31h 00mKorean Air

Wed 8/207:30 amSIN - ONT

2 stops24h 58mKorean Air

Deal found 4/30

$738

Mon 8/116:00 amONT - DEL

2 stops27h 00mUnited Airlines

Fri 9/1211:35 pmDEL - ONT

2 stops34h 20mUnited Airlines

Deal found 5/1

$764

Wed 5/146:00 amONT - MNL

2 stops26h 59mKorean Air

Mon 6/23:05 amMNL - ONT

2 stops30h 15mKorean Air

Deal found 4/30

$765

Mon 9/2212:10 amONT - MNL

1 stop18h 25mChina Airlines

Mon 10/64:50 pmMNL - ONT

1 stop16h 10mChina Airlines

Deal found 4/30

$769

Tue 5/65:45 amONT - BKK

2 stops26h 00mKorean Air

Mon 5/199:40 pmBKK - ONT

2 stops34h 40mKorean Air

Deal found 4/30

$774

Wed 5/76:00 amONT - BKK

2 stops25h 45mDelta

Mon 5/269:50 amBKK - ONT

2 stops22h 30mDelta

Deal found 4/30

$777

Sun 5/118:24 amONT - ICN

1 stop20h 06mMultiple Airlines

Sat 5/246:20 pmICN - ONT

1 stop21h 16mMultiple Airlines

Deal found 4/30

$788

Mon 10/276:00 amONT - MNL

1 stop23h 45mUnited Airlines

Tue 11/119:55 amMNL - ONT

1 stop24h 05mUnited Airlines

Deal found 4/30

$798

Mon 8/117:00 amONT - SIN

2 stops25h 40mDelta

Wed 8/277:30 amSIN - ONT

2 stops30h 11mDelta

Deal found 4/29

$803

Thu 8/216:00 amONT - BKK

2 stops27h 55mUnited Airlines

Wed 9/109:35 amBKK - ONT

2 stops24h 58mUnited Airlines

Deal found 4/30

$805

Wed 5/286:00 amONT - TPE

1 stop22h 55mDelta

Thu 6/269:40 amTPE - ONT

2 stops29h 06mDelta

Deal found 4/30

$809

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 May 1, 2025.

Mon 8/116:00 amONT - DEL

2 stops27h 00mUnited Airlines

Fri 9/1211:35 pmDEL - ONT

2 stops34h 20mUnited Airlines

Deal found 5/1

$764

Tue 5/65:45 amONT - MNL

2 stops27h 14mKorean Air

Tue 5/201:10 amMNL - ONT

2 stops32h 10mKorean Air

Deal found 4/30

$765

Mon 9/227:00 amONT - BKK

2 stops28h 05mDelta

Sun 10/192:35 amBKK - ONT

2 stops35h 11mDelta

Deal found 4/30

$777

Sun 5/118:24 amONT - ICN

1 stop20h 06mMultiple Airlines

Sat 5/246:20 pmICN - ONT

1 stop21h 16mMultiple Airlines

Deal found 4/30

$788

Wed 10/811:10 pmONT - TPE

Nonstop14h 05mSTARLUX Airlines

Wed 10/228:05 pmTPE - ONT

Nonstop12h 00mSTARLUX Airlines

Deal found 4/29

$811

Tue 5/612:10 amONT - MNL

1 stop33h 55mChina Airlines

Wed 5/2810:35 amMNL - ONT

1 stop22h 25mChina Airlines

Deal found 4/28

$815

Fri 9/268:04 pmONT - DEL

2 stops60h 26mAmerican Airlines

Mon 10/611:30 pmDEL - ONT

2 stops26h 36mAmerican Airlines

Deal found 4/30

$854

Tue 9/236:00 amONT - TPE

2 stops23h 45mJapan Airlines

Tue 9/3010:00 amTPE - ONT

2 stops23h 28mJapan Airlines

Deal found 4/29

$896

Mon 9/226:00 amONT - DEL

2 stops32h 25mQatar Airways

Mon 10/1310:25 amDEL - ONT

2 stops48h 42mQatar Airways

Deal found 4/30

$939

Sun 9/146:00 amONT - NRT

1 stop18h 00mAlaska Airlines

Wed 9/246:25 pmNRT - ONT

1 stop16h 03mAlaska Airlines

Deal found 4/30

$948

Mon 9/1511:39 amONT - NRT

1 stop36h 21mHawaiian Airlines

Tue 9/306:25 pmNRT - ONT

1 stop16h 03mHawaiian Airlines

Deal found 5/1

$962

Mon 10/206:55 pmONT - TPE

1 stop19h 15mEVA Air

Thu 10/3011:00 pmTPE - ONT

1 stop14h 37mEVA Air

Deal found 4/29

$980

Last-minute flights from Ontario to Asia
Discover last-minute flight deals from Ontario to Asia. Data last updated May 1, 2025 and is based on user searches.

Sat 5/312:59 amONT - NRT

2 stops45h 21mMultiple Airlines

Thu 5/89:30 pmNRT - ONT

1 stop28h 32mMultiple Airlines

Deal found 4/30

$842

Sun 5/42:35 pmONT - DEL

2 stops22h 50mDelta

Tue 5/272:05 amDEL - ONT

2 stops32h 54mDelta

Deal found 5/1

$723

Mon 5/56:00 amONT - SGN

2 stops25h 55mUnited Airlines

Sun 5/1811:15 pmSGN - ONT

2 stops35h 19mUnited Airlines

Deal found 4/30

$878

Mon 5/56:00 amONT - BKK

2 stops32h 35mUnited Airlines

Thu 5/229:35 amBKK - ONT

2 stops27h 10mUnited Airlines

Deal found 4/30

$831

Tue 5/62:35 pmONT - DEL

2 stops22h 50mDelta

Tue 5/272:05 amDEL - ONT

2 stops32h 54mDelta

Deal found 5/1

$723

Tue 5/65:45 amONT - MNL

2 stops27h 14mKorean Air

Wed 5/2111:30 pmMNL - ONT

2 stops33h 50mKorean Air

Deal found 4/30

$765

Tue 5/65:45 amONT - BKK

2 stops26h 00mKorean Air

Mon 5/199:40 pmBKK - ONT

2 stops34h 40mKorean Air

Deal found 4/30

$774

Tue 5/65:45 amONT - SGN

2 stops27h 30mKorean Air

Fri 5/167:35 amSGN - ONT

2 stops24h 45mKorean Air

Deal found 4/29

$837

Tue 5/65:05 amONT - MNL

2 stops33h 50mUnited Airlines

Wed 5/218:40 amMNL - ONT

1 stop20h 45mUnited Airlines

Deal found 4/30

$853

Wed 5/76:00 amONT - BKK

2 stops25h 45mDelta

Mon 5/269:50 amBKK - ONT

2 stops22h 30mDelta

Deal found 4/30

$777

Wed 5/76:00 amONT - BKK

2 stops32h 35mUnited Airlines

Tue 5/279:35 amBKK - ONT

2 stops27h 10mUnited Airlines

Deal found 5/1

$861

Fri 5/96:00 amONT - TPE

1 stop21h 45mUnited Airlines

Sat 5/249:50 amTPE - ONT

1 stop17h 24mUnited Airlines

Deal found 4/30

$854

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 May 1, 2025.

Mon 8/46:30 amONT - SGN

2 stops40h 05mKorean Air

Deal found 4/30

$378

Sun 8/176:39 pmONT - SGN

2 stops37h 16mUnited Airlines

Deal found 4/29

$394

Tue 6/311:44 amONT - DEL

2 stops25h 41mDelta

Deal found 4/30

$396

Thu 5/86:00 amONT - MNL

2 stops26h 59mKorean Air

Deal found 4/30

$408

Wed 5/76:00 amONT - TPE

2 stops22h 55mDelta

Deal found 4/30

$411

Wed 8/201:42 pmONT - BKK

2 stops48h 53mUnited Airlines

Deal found 4/30

$418

Sun 8/39:41 pmONT - ICN

1 stop30h 49mMultiple Airlines

Deal found 4/30

$419

Thu 5/86:00 amONT - TPE

2 stops39h 10mKorean Air

Deal found 4/30

$421

Fri 5/98:24 amONT - BKK

2 stops46h 46mMultiple Airlines

Deal found 4/30

$436

Tue 7/296:00 amONT - TPE

2 stops38h 30mJapan Airlines

Deal found 4/30

$440

Wed 10/227:00 amONT - BKK

2 stops24h 45mKorean Air

Deal found 4/30

$440

Wed 5/76:00 amONT - HND

2 stops24h 50mKorean Air

Deal found 4/29

$440

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

OntarioSingapore

ONT - SIN

ONTSIN

Ontario

Wed 8/13

7:00 am-5:00 am

2 stops31h 00m

Singapore Changi

Wed 8/20

7:30 am-5:28 pm

2 stops24h 58m

$738

OntarioNew Delhi

ONT - DEL

ONTDEL

Ontario

Mon 8/11

6:00 am-9:30 pm

2 stops27h 00m

New Delhi Indira Gandhi Intl

Fri 9/12

11:35 pm-9:25 pm

2 stops34h 20m

$764

OntarioManila

ONT - MNL

ONTMNL

Ontario

Wed 5/14

6:00 am-11:59 pm

2 stops26h 59m

Manila Ninoy Aquino Intl

Mon 6/2

3:05 am-6:20 pm

2 stops30h 15m

$765

OntarioManila

ONT - MNL

ONTMNL

Ontario

Mon 9/22

12:10 am-9:35 am

1 stop18h 25m

Manila Ninoy Aquino Intl

Mon 10/6

4:50 pm-6:00 pm

1 stop16h 10m

$769

OntarioBangkok

ONT - BKK

ONTBKK

Ontario

Mon 9/22

7:00 am-1:05 am

2 stops28h 05m

Bangkok Suvarnabhumi

Sun 10/19

2:35 am-11:46 pm

2 stops35h 11m

$777

OntarioBangkok

ONT - BKK

ONTBKK

Ontario

Tue 5/13

6:00 am-11:40 pm

2 stops27h 40m

Bangkok Suvarnabhumi

Tue 5/20

9:40 pm-6:20 pm

2 stops34h 40m

$782

OntarioIncheon

ONT - ICN

ONTICN

Ontario

Sun 5/11

8:24 am-8:30 pm

1 stop20h 06m

Incheon Intl

Sat 5/24

6:20 pm-11:36 pm

1 stop21h 16m

$788

OntarioManila

ONT - MNL

ONTMNL

Ontario

Mon 10/27

10:40 am-8:45 pm

1 stop19h 05m

Manila Ninoy Aquino Intl

Mon 11/10

9:55 am-1:10 pm

1 stop19h 15m

$798

OntarioSingapore

ONT - SIN

ONTSIN

Ontario

Mon 8/11

7:00 am-11:40 pm

2 stops25h 40m

Singapore Changi

Wed 8/27

7:30 am-10:41 pm

2 stops30h 11m

$803

OntarioBangkok

ONT - BKK

ONTBKK

Ontario

Thu 8/21

6:00 am-11:55 pm

2 stops27h 55m

Bangkok Suvarnabhumi

Wed 9/10

9:35 am-8:33 pm

2 stops24h 58m

$805

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/30

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 December is currently the most expensive (average of $1,635). 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

161 reviews

Reviews

1 / 6

10.0

Excellent

Anonymous,Apr 2025

KIX - TPE

Very pleasant experience overall, while the main course of the meal could have been better and the movies could have been more recent and with more variety. They offer blindfolds and earplugs, which are a plus.

STARLUX Airlines

9.1

Wonderful

161 reviews

STARLUX Airlines

9.1

Wonderful

161 reviews

Reviews

1 / 6

10.0

Excellent

Anonymous,Apr 2025

KIX - TPE

EVA Air

8.4

Very good

1,186 reviews

STARLUX Airlines

9.1

Wonderful

161 reviews

Reviews

1 / 6

10.0

Excellent

Anonymous,Apr 2025

KIX - TPE

Korean Air

8.4

Very good

1,068 reviews

STARLUX Airlines

9.1

Wonderful

161 reviews

Reviews

1 / 6

10.0

Excellent

Anonymous,Apr 2025

KIX - TPE

Japan Airlines

8.3

Very good

1,464 reviews

STARLUX Airlines

9.1

Wonderful

161 reviews

Reviews

1 / 6

10.0

Excellent

Anonymous,Apr 2025

KIX - TPE

China Airlines

8.3

Very good

732 reviews

STARLUX Airlines

9.1

Wonderful

161 reviews

Reviews

1 / 6

10.0

Excellent

Anonymous,Apr 2025

KIX - TPE

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?
$378 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 Delta, with prices starting from $394 and $396, 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 December is currently the most expensive (average of $1,635). 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$1,209	FlexibilityNo cancel fee	On-time69%
ZIPAIR	Cheapest$591	Average$778	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%
Korean Air	Cheapest$698	Average$1,010	FlexibilityNo cancel fee	On-time81%
Cathay Pacific	Cheapest$704	Average$833	FlexibilityNo cancel fee	On-time72%
American Airlines	Cheapest$712	Average$1,058	FlexibilityNo cancel fee	On-time71%
Asiana Airlines	Cheapest$720	Average$727	FlexibilityNo cancel fee	On-time76%
China Airlines	Cheapest$739	Average$1,082	FlexibilityNo cancel fee	On-time70%
EVA Air	Cheapest$780	Average$1,271	FlexibilityNo cancel fee	On-time74%

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$378+ 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 8/4. 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 May 1, 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 May 1, 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 May 1, 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 May 1, 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 May 1, 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 May 1, 2025.