What is the cheapest airline that flies from Ontario to Southeast Asia?

Korean Air, United Airlines, and Delta are the most popular carriers operating from Ontario to Southeast Asia

What airlines fly to Southeast Asia?

Philippine Airlines, Singapore Airlines and China Airlines are the top three most popular airlines that fly to Southeast Asia from Ontario according to our data. Philippine Airlines is the first choice among our users, with 31% of people opting to fly with this airline when traveling to Southeast Asia. Keep in mind that there are 23 different airlines that fly to Southeast Asia on a routine basis, so you have a few additional options to choose from.

When did momondo last update prices for flights from Ontario Airport to Southeast Asia?

Prices for flights from Ontario Airport to Southeast Asia were last updated today.

How many operators does momondo search for flights from Ontario Airport to Southeast Asia?

The number of operators available for flights from Ontario Airport to Southeast Asia is 7 as of April 2026.

How old do you have to be to fly from Ontario Airport to Southeast Asia?

The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Ontario Airport to Southeast Asia.

What documentation or ID do you need to fly to Southeast Asia?

The required travel and health documents for your Southeast Asia trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Southeast Asia. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

$362 Cheap Flights from Ontario to Southeast Asia in 2026

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Find the cheapest flights from Ontario to Southeast Asia

Round-trip

One-way

Last minute

Cheap round-trip flights

Enter your travel dates to find the best prices.

12:45 am - 11:05 am

ONT

CEB

19h 20m

1 stop

12:05 pm - 6:40 pm

CEB

ONT

21h 35m

1 stop

$733China Airlines

Fri, Aug 21 - Sat, Aug 29

12:45 am - 3:50 pm

ONT

MNL

24h 05m

1 stop

4:50 pm - 6:40 pm

MNL

ONT

16h 50m

1 stop

$735China Airlines

Mon, Aug 31 - Tue, Sep 15

7:00 am - 10:10 pm

ONT

SGN

25h 10m

2 stops

7:30 am - 10:34 pm

SGN

ONT

29h 04m

2 stops

$765Delta

Tue, May 5 - Tue, May 26

7:00 am - 10:10 pm

ONT

SGN

25h 10m

2 stops

11:45 pm - 5:10 pm

SGN

ONT

31h 25m

2 stops

$771Korean Air

Sat, Apr 25 - Sun, May 10

6:00 am - 11:35 pm

ONT

BKK

27h 35m

2 stops

9:50 am - 10:44 pm

BKK

ONT

26h 54m

2 stops

$801Delta

Tue, Sep 1 - Tue, Sep 8

11:45 pm - 9:50 am

ONT

CEB

19h 05m

1 stop

10:50 am - 5:40 pm

CEB

ONT

21h 50m

1 stop

$803STARLUX Airlines

Sat, Aug 15 - Wed, Aug 26

11:10 pm - 9:50 am

ONT

CEB

19h 40m

1 stop

10:50 am - 5:05 pm

CEB

ONT

21h 15m

1 stop

$808STARLUX Airlines

Mon, Sep 7 - Wed, Sep 16

6:45 am - 9:50 pm

ONT

KUL

48h 05m

2 stops

11:20 pm - 5:19 pm

KUL

ONT

32h 59m

2 stops

$863Korean Air

Tue, May 12 - Wed, Jun 17

8:00 am - 12:05 am

ONT

KUL

25h 05m

2 stops

2:15 pm - 6:11 pm

KUL

ONT

42h 56m

2 stops

$965United Airlines

Mon, Sep 7 - Wed, Sep 9

6:00 am - 6:35 pm

ONT

SIN

21h 35m

1 stop

8:45 am - 10:37 pm

SIN

ONT

28h 52m

1 stop

$971United Airlines

Mon, May 11 - Thu, Jun 11

Delta flights from Ontario to Southeast Asia

Our best Delta deals on Ontario to Southeast Asia flight tickets

Delta

May 5

ONT7:00 amOntario

25h 10m

2 stops

SGN10:10 pmHo Chi Minh City

May 26

SGN7:30 amHo Chi Minh City

29h 04m

2 stops

ONT10:34 pmOntario

$765

Delta

Apr 23

ONT6:00 amOntario

27h 35m

2 stops

BKK11:35 pmBangkok Suvarnabhumi

May 7

BKK9:40 pmBangkok Suvarnabhumi

33h 30m

2 stops

ONT5:10 pmOntario

$789

Delta

Apr 18

ONT5:59 pmOntario

52h 36m

2 stops

SGN12:35 pmHo Chi Minh City

May 2

SGN1:55 pmHo Chi Minh City

47h 49m

2 stops

ONT11:44 pmOntario

$791

Korean Air flights from Ontario to Southeast Asia

Our best Korean Air deals on Ontario to Southeast Asia flight tickets

Korean Air

Apr 25

ONT7:00 amOntario

25h 10m

2 stops

SGN10:10 pmHo Chi Minh City

May 10

SGN11:45 pmHo Chi Minh City

31h 25m

2 stops

ONT5:10 pmOntario

$771

Korean Air

Apr 27

ONT7:00 amOntario

25h 10m

2 stops

SGN10:10 pmHo Chi Minh City

May 13

SGN1:55 pmHo Chi Minh City

41h 15m

2 stops

ONT5:10 pmOntario

$780

Korean Air

Apr 27

ONT7:00 amOntario

25h 10m

2 stops

SGN10:10 pmHo Chi Minh City

May 13

SGN1:55 pmHo Chi Minh City

41h 15m

2 stops

ONT5:10 pmOntario

$786

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Quickest round-trip

OntarioCebu City

ONT - CEB

ONTCEB

Ontario

Fri 8/21

12:45 am-11:05 am

1 stop19h 20m

Cebu City Mactan Intl

Sat 8/29

12:05 pm-6:40 pm

1 stop21h 35m

$733

OntarioManila

ONT - MNL

ONTMNL

Ontario

Mon 8/31

12:45 am-3:50 pm

1 stop24h 05m

Manila Ninoy Aquino Intl

Tue 9/15

4:50 pm-6:40 pm

1 stop16h 50m

$735

OntarioHo Chi Minh City

ONT - SGN

ONTSGN

Ontario

Tue 5/5

7:00 am-10:10 pm

2 stops25h 10m

Ho Chi Minh City

Tue 5/26

7:30 am-10:34 pm

2 stops29h 04m

$765

OntarioHo Chi Minh City

ONT - SGN

ONTSGN

Ontario

Sat 4/25

7:00 am-10:10 pm

2 stops25h 10m

Ho Chi Minh City

Sun 5/10

11:45 pm-5:10 pm

2 stops31h 25m

$771

OntarioBangkok

ONT - BKK

ONTBKK

Ontario

Tue 9/1

6:00 am-11:35 pm

2 stops27h 35m

Bangkok Suvarnabhumi

Tue 9/8

9:50 am-10:44 pm

2 stops26h 54m

$801

OntarioCebu City

ONT - CEB

ONTCEB

Ontario

Sat 8/15

11:45 pm-9:50 am

1 stop19h 05m

Cebu City Mactan Intl

Wed 8/26

10:50 am-5:40 pm

1 stop21h 50m

$803

OntarioCebu City

ONT - CEB

ONTCEB

Ontario

Mon 9/7

11:10 pm-9:50 am

1 stop19h 40m

Cebu City Mactan Intl

Wed 9/16

10:50 am-5:05 pm

1 stop21h 15m

$808

OntarioKuala Lumpur

ONT - KUL

ONTKUL

Ontario

Tue 5/12

6:45 am-9:50 pm

2 stops48h 05m

Kuala Lumpur Intl

Wed 6/17

11:20 pm-5:19 pm

2 stops32h 59m

$863

OntarioKuala Lumpur

ONT - KUL

ONTKUL

Ontario

Mon 9/7

8:00 am-12:05 am

2 stops25h 05m

Kuala Lumpur Intl

Wed 9/9

2:15 pm-6:11 pm

2 stops42h 56m

$965

OntarioSingapore

ONT - SIN

ONTSIN

Ontario

Mon 5/11

6:00 am-6:35 pm

1 stop21h 35m

Singapore Changi

Thu 6/11

8:45 am-10:37 pm

1 stop28h 52m

$971

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from Ontario to Southeast Asia

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

Prices

Airlines

What is the cheapest month to fly to Southeast Asia?

The month of January is, on average, the cheapest month to fly to Southeast Asia from Ontario, with most prices found around $764. If you don’t want to visit Southeast Asia in January, then you should wait until February to fly from Ontario, when ticket prices are also cheap, with an average price of $783.

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

You are more likely to see cheaper flights to Southeast Asia from Ontario when booking weeks ahead of your departure date. In general, you can expect to find flights to Southeast Asia for around $954 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Southeast Asia from Ontario for as low as $801 on momondo.

Can stopping save me money on Ontario to Southeast Asia flights?

No. A direct flight is the cheapest option for a flight between Ontario to Southeast Asia.

Cheap Ontario to Southeast Asia flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Ontario to Southeast Asia

Fastest flight time	17h 57m
Direct flights	None

The fastest flight from Ontario to Southeast Asia takes 17h 57m

There are no direct flights from Ontario to Southeast Asia. There are no popular flight routes from Ontario to Southeast Asia.

Search flight deals

Frequently asked questions about flying from Ontario to Southeast Asia

When did momondo last update prices for flights from Ontario Airport to Southeast Asia?
Prices for flights from Ontario Airport to Southeast Asia were last updated today.
How many operators does momondo search for flights from Ontario Airport to Southeast Asia?
The number of operators available for flights from Ontario Airport to Southeast Asia is 7 as of April 2026.
How old do you have to be to fly from Ontario Airport to Southeast Asia?
The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Ontario Airport to Southeast Asia.
What documentation or ID do you need to fly to Southeast Asia?
The required travel and health documents for your Southeast Asia trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Southeast Asia. We recommend that you seek guidance from your airline or a reliable third party such as IATA.
What is the most popular plane model from Ontario to Southeast Asia?
Based on momondo bookings for this flight route, the most popular plane model on flight routes from Ontario to Southeast Asia is Airbus A321neo (14.32% of total bookings). The next most popular plane models are Boeing 737 MAX 8 (11.69%), Boeing 737-800 Passenger/BBJ2 (winglets) (11.49%), and Airbus A320neo (10.43%).

Best airlines flying from Ontario to Southeast Asia

Compare and see reviews for airlines that fly from Ontario to Southeast Asia with momondo

Airline	Rating	Free Cancellation	Price
Delta	PriceFrom $457	Free Cancellation	Rating 7.9 8,383 reviews	Search Delta flights
United Airlines	PriceFrom $604	Free Cancellation	Rating 7.4 9,546 reviews	Search United Airlines flights
Korean Air	PriceFrom $616	Free Cancellation	Rating 8.4 1,203 reviews	Search Korean Air flights
Asiana Airlines	PriceFrom $647	Free Cancellation	Rating 8.1 510 reviews	Search Asiana Airlines flights
China Airlines	PriceFrom $655	Free Cancellation	Rating 8.3 816 reviews	Search China Airlines flights
STARLUX Airlines	PriceFrom $667	Free Cancellation	Rating 8.9 295 reviews	Search STARLUX Airlines flights
Philippine Airlines	PriceFrom $754	Free Cancellation	Rating 7.3 983 reviews	Search Philippine Airlines flights

Why use momondo?

Why should I use momondo to find a flight deal from Ontario to Southeast Asia?

It is quick and easy to find Ontario to Southeast Asia flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to Southeast Asia that suits you.

Can I find flights from Ontario to Southeast Asia with flexible booking policies on momondo?

Flights from Ontario to Southeast Asia with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

How can momondo help me find flights from Ontario to Southeast Asia?

Once you have performed a search for Ontario to Southeast Asia flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

I’m not ready to book a flight from Ontario to Southeast Asia right now. Can momondo alert me if prices change?

Price alerts on flights to Southeast Asia from Ontario are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.