What is the cheapest airline that flies from Ontario to Vietnam?

STARLUX Airlines, Korean Air, and Delta are the most popular carriers operating from Ontario to Vietnam

What airlines fly to Vietnam?

Singapore Airlines, China Airlines and Cathay Pacific are the top three most popular airlines that fly to Vietnam from Ontario according to our data. Singapore Airlines is the first choice among our users, with 32% of people opting to fly with this airline when traveling to Vietnam. Keep in mind that there are 21 different airlines that fly to Vietnam 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 Vietnam?

Prices for flights from Ontario Airport to Vietnam are refreshed on a daily basis.

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

As of August 2026, there are 5 operators available to choose from for flights from Ontario Airport to Vietnam.

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

Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Ontario Airport to Vietnam.

What documentation or ID do you need to fly to Vietnam?

The required travel and health documents for your Vietnam 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 Vietnam. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

$396 Cheap Flights from Ontario to Vietnam in 2026

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Ontario to Vietnam

Round-trip

One-way

Last minute

Cheap round-trip flights

Enter your travel dates to find the best prices.

11:30 pm - 4:55 pmONT Ontario-SGN Ho Chi Minh City

27h 25m1 stop Taipei City Taiwan Taoyuan Intl

11:30 am - 5:05 pmSGN Ho Chi Minh City-ONT Ontario

19h 35m1 stop Taipei City Taiwan Taoyuan Intl

$754STARLUX Airlines

Mon, Sep 14 - Mon, Oct 19

11:30 pm - 10:15 amONT Ontario-SGN Ho Chi Minh City

20h 45m1 stop Taipei City Taiwan Taoyuan Intl

11:40 am - 3:55 pmSGN Ho Chi Minh City-ONT Ontario

19h 15m1 stop Taipei City Taiwan Taoyuan Intl

$754STARLUX Airlines

Sat, Oct 17 - Sat, Nov 7

12:10 am - 9:40 amONT Ontario-SGN Ho Chi Minh City

19h 30m1 stop Taipei City Taiwan Taoyuan Intl

5:30 pm - 6:00 pmSGN Ho Chi Minh City-ONT Ontario

38h 30m1 stop Taipei City Taiwan Taoyuan Intl

$777China Airlines

Sat, Sep 19 - Sun, Oct 4

12:45 am - 9:40 amONT Ontario-SGN Ho Chi Minh City

18h 55m1 stop Taipei City Taiwan Taoyuan Intl

5:30 pm - 6:00 pmSGN Ho Chi Minh City-ONT Ontario

38h 30m1 stop Taipei City Taiwan Taoyuan Intl

$785China Airlines

Wed, Sep 9 - Thu, Sep 17

7:04 am - 12:50 pmONT Ontario-SGN Ho Chi Minh City

38h 46m2 stops Seattle/Tacoma Intl Incheon Intl

8:00 am - 5:13 pmSGN Ho Chi Minh City-ONT Ontario

24h 13m2 stops Incheon Intl Seattle/Tacoma Intl

$787Korean Air

Mon, Nov 16 - Wed, Nov 25

7:04 am - 10:25 pmONT Ontario-SGN Ho Chi Minh City

24h 21m2 stops Seattle/Tacoma Intl Incheon Intl

8:00 am - 5:13 pmSGN Ho Chi Minh City-ONT Ontario

24h 13m2 stops Incheon Intl Seattle/Tacoma Intl

$787Korean Air

Mon, Nov 16 - Mon, Nov 23

12:45 am - 9:40 amONT Ontario-SGN Ho Chi Minh City

18h 55m1 stop Taipei City Taiwan Taoyuan Intl

11:20 am - 6:05 pmSGN Ho Chi Minh City-ONT Ontario

20h 45m1 stop Taichung City ChingChuanKang

$802Multiple Airlines

Mon, Sep 14 - Fri, Oct 30

12:45 am - 9:40 amONT Ontario-SGN Ho Chi Minh City

18h 55m1 stop Taipei City Taiwan Taoyuan Intl

11:20 am - 6:00 pmSGN Ho Chi Minh City-ONT Ontario

20h 40m1 stop Taichung City ChingChuanKang

$802Multiple Airlines

Sat, Aug 29 - Wed, Sep 16

6:20 am - 10:10 pmONT Ontario-SGN Ho Chi Minh City

25h 50m2 stops Seattle/Tacoma Intl Incheon Intl

11:50 pm - 11:00 pmSGN Ho Chi Minh City-ONT Ontario

38h 10m2 stops Incheon Intl Seattle/Tacoma Intl

$806Delta

Tue, Oct 13 - Mon, Nov 23

7:04 am - 10:25 pmONT Ontario-SGN Ho Chi Minh City

24h 21m2 stops Seattle/Tacoma Intl Incheon Intl

8:00 am - 4:56 pmSGN Ho Chi Minh City-ONT Ontario

23h 56m2 stops Incheon Intl Seattle/Tacoma Intl

$806Delta

Sun, Nov 29 - Thu, Dec 24

Cheap last minute flights

Enter your travel dates to find the best prices.

11:55 pm - 10:15 amONT Ontario-SGN Ho Chi Minh City

20h 20m1 stop Taipei City Taiwan Taoyuan Intl

11:30 am - 5:05 pmSGN Ho Chi Minh City-ONT Ontario

19h 35m1 stop Taipei City Taiwan Taoyuan Intl

$754STARLUX Airlines

Fri, Aug 21 - Mon, Sep 21

11:55 pm - 4:55 pmONT Ontario-SGN Ho Chi Minh City

27h 00m1 stop Taipei City Taiwan Taoyuan Intl

11:30 am - 5:05 pmSGN Ho Chi Minh City-ONT Ontario

19h 35m1 stop Taipei City Taiwan Taoyuan Intl

$754STARLUX Airlines

Fri, Aug 21 - Mon, Sep 14

12:45 am - 9:40 amONT Ontario-SGN Ho Chi Minh City

18h 55m1 stop Taipei City Taiwan Taoyuan Intl

10:50 am - 6:00 pmSGN Ho Chi Minh City-ONT Ontario

21h 10m1 stop Taipei City Taiwan Taoyuan Intl

$800China Airlines

Wed, Aug 19 - Tue, Sep 22

12:45 am - 9:40 amONT Ontario-SGN Ho Chi Minh City

18h 55m1 stop Taipei City Taiwan Taoyuan Intl

11:20 am - 6:40 pmSGN Ho Chi Minh City-ONT Ontario

21h 20m1 stop Taichung City ChingChuanKang

$802Multiple Airlines

Wed, Aug 19 - Mon, Sep 7

12:45 am - 4:20 pmONT Ontario-SGN Ho Chi Minh City

25h 35m1 stop Taipei City Taiwan Taoyuan Intl

5:30 pm - 6:40 pmSGN Ho Chi Minh City-ONT Ontario

39h 10m1 stop Taipei City Taiwan Taoyuan Intl

$807China Airlines

Tue, Aug 18 - Tue, Sep 1

6:20 am - 11:15 pmONT Ontario-SGN Ho Chi Minh City

26h 55m2 stops Seattle/Tacoma Intl Incheon Intl

7:30 am - 10:45 pmSGN Ho Chi Minh City-ONT Ontario

29h 15m2 stops Incheon Intl Seattle/Tacoma Intl

$826Delta

Wed, Aug 19 - Wed, Sep 2

6:20 am - 11:15 pmONT Ontario-SGN Ho Chi Minh City

26h 55m2 stops Seattle/Tacoma Intl Incheon Intl

7:30 am - 10:40 pmSGN Ho Chi Minh City-ONT Ontario

29h 10m2 stops Incheon Intl Seattle/Tacoma Intl

$826Delta

Fri, Aug 21 - Mon, Sep 14

6:20 am - 12:35 pmONT Ontario-SGN Ho Chi Minh City

40h 15m2 stops Seattle/Tacoma Intl Incheon Intl

1:55 pm - 10:40 pmSGN Ho Chi Minh City-ONT Ontario

46h 45m2 stops Incheon Intl Seattle/Tacoma Intl

$832Korean Air

Fri, Aug 21 - Mon, Sep 21

6:20 am - 11:15 pmONT Ontario-SGN Ho Chi Minh City

26h 55m2 stops Seattle/Tacoma Intl Incheon Intl

7:30 am - 5:19 pmSGN Ho Chi Minh City-ONT Ontario

23h 49m2 stops Incheon Intl Seattle/Tacoma Intl

$859Korean Air

Wed, Aug 19 - Mon, Sep 14

9:01 am - 12:15 amONT Ontario-SGN Ho Chi Minh City

25h 14m2 stops San Francisco Tokyo Narita

7:30 am - 3:33 pmSGN Ho Chi Minh City-ONT Ontario

23h 03m2 stops Tokyo Narita San Francisco

$916United Airlines

Tue, Aug 18 - Tue, Nov 3

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China Airlines flights from Ontario to Vietnam

Our best China Airlines deals on Ontario to Vietnam flight tickets

China Airlines

Sep 19

ONT12:10 amOntario

19h 30m

1 stop

SGN9:40 amHo Chi Minh City

Oct 4

SGN5:30 pmHo Chi Minh City

38h 30m

1 stop

ONT6:00 pmOntario

$777

China Airlines

Sep 19

ONT12:10 amOntario

19h 30m

1 stop

SGN9:40 amHo Chi Minh City

Oct 4

SGN5:30 pmHo Chi Minh City

38h 30m

1 stop

ONT6:00 pmOntario

$790

China Airlines

Aug 19

ONT12:45 amOntario

18h 55m

1 stop

SGN9:40 amHo Chi Minh City

Sep 22

SGN10:50 amHo Chi Minh City

21h 10m

1 stop

ONT6:00 pmOntario

$800

Korean Air flights from Ontario to Vietnam

Our best Korean Air deals on Ontario to Vietnam flight tickets

Korean Air

Nov 16

ONT7:04 amOntario

38h 46m

2 stops

SGN12:50 pmHo Chi Minh City

Nov 25

SGN8:00 amHo Chi Minh City

24h 13m

2 stops

ONT5:13 pmOntario

$787

Korean Air

Oct 15

ONT6:20 amOntario

25h 50m

2 stops

SGN10:10 pmHo Chi Minh City

Oct 30

SGN11:50 pmHo Chi Minh City

31h 22m

2 stops

ONT5:12 pmOntario

$803

Korean Air

Aug 31

ONT6:20 amOntario

25h 50m

2 stops

SGN10:10 pmHo Chi Minh City

Sep 22

SGN1:55 pmHo Chi Minh City

41h 24m

2 stops

ONT5:19 pmOntario

$812

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

OntarioHo Chi Minh City

ONT Ontario - SGN Ho Chi Minh City

ONTSGN

Ontario

Mon 9/14

11:30 pm-4:55 pm

1 stop27h 25m

Ho Chi Minh City

Mon 10/19

11:30 am-5:05 pm

1 stop19h 35m

$754

OntarioHo Chi Minh City

ONT Ontario - SGN Ho Chi Minh City

ONTSGN

Ontario

Sat 10/17

11:30 pm-10:15 am

1 stop20h 45m

Ho Chi Minh City

Sat 11/7

11:40 am-3:55 pm

1 stop19h 15m

$754

OntarioHo Chi Minh City

ONT Ontario - SGN Ho Chi Minh City

ONTSGN

Ontario

Sat 9/19

12:10 am-9:40 am

1 stop19h 30m

Ho Chi Minh City

Sun 10/4

5:30 pm-6:00 pm

1 stop38h 30m

$777

OntarioHo Chi Minh City

ONT Ontario - SGN Ho Chi Minh City

ONTSGN

Ontario

Wed 9/9

12:45 am-9:40 am

1 stop18h 55m

Ho Chi Minh City

Thu 9/17

5:30 pm-6:00 pm

1 stop38h 30m

$785

OntarioHo Chi Minh City

ONT Ontario - SGN Ho Chi Minh City

ONTSGN

Ontario

Mon 11/16

7:04 am-12:50 pm

2 stops38h 46m

Ho Chi Minh City

Wed 11/25

8:00 am-5:13 pm

2 stops24h 13m

$787

OntarioHo Chi Minh City

ONT Ontario - SGN Ho Chi Minh City

ONTSGN

Ontario

Mon 11/16

7:04 am-10:25 pm

2 stops24h 21m

Ho Chi Minh City

Mon 11/23

8:00 am-5:13 pm

2 stops24h 13m

$787

OntarioHo Chi Minh City

ONT Ontario - SGN Ho Chi Minh City

ONTSGN

Ontario

Mon 9/14

12:45 am-9:40 am

1 stop18h 55m

Ho Chi Minh City

Fri 10/30

11:20 am-6:05 pm

1 stop20h 45m

$802

Quickest round-trip

OntarioHo Chi Minh City

ONT Ontario - SGN Ho Chi Minh City

ONTSGN

Ontario

Sat 8/29

12:45 am-9:40 am

1 stop18h 55m

Ho Chi Minh City

Wed 9/16

11:20 am-6:00 pm

1 stop20h 40m

$802

OntarioHo Chi Minh City

ONT Ontario - SGN Ho Chi Minh City

ONTSGN

Ontario

Tue 10/13

6:20 am-10:10 pm

2 stops25h 50m

Ho Chi Minh City

Mon 11/23

11:50 pm-11:00 pm

2 stops38h 10m

$806

OntarioHo Chi Minh City

ONT Ontario - SGN Ho Chi Minh City

ONTSGN

Ontario

Sun 11/29

7:04 am-10:25 pm

2 stops24h 21m

Ho Chi Minh City

Thu 12/24

8:00 am-4:56 pm

2 stops23h 56m

$806

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 Vietnam

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 Vietnam?

The month of March is, on average, the cheapest month to fly to Vietnam from Ontario, with most prices found around $737. If you don’t want to visit Vietnam in March, then you should wait until November to fly from Ontario, when ticket prices are also cheap, with an average price of $758.

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

You are more likely to see cheaper flights to Vietnam from Ontario when booking weeks ahead of your departure date. In general, you can expect to find flights to Vietnam for around $952 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Vietnam from Ontario for as low as $761 on momondo.

Can stopping save me money on Ontario to Vietnam flights?

You could potentially save up to 8% on your flight if you consider stops on a Ontario to Vietnam flight.

Cheap Ontario to Vietnam flight deals and tips

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

Best Price Found	$395
Fastest flight time	19h 25m
Direct flights	None

The best one-way flight to Vietnam from Ontario in the past 72 hours is $395. The best round-trip flight deal from Ontario to Vietnam found on momondo in the last 72 hours is $754.

The fastest flight from Ontario to Vietnam takes 19h 25m

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

Search flight deals

Frequently asked questions about flying from Ontario to Vietnam

When did momondo last update prices for flights from Ontario Airport to Vietnam?
Prices for flights from Ontario Airport to Vietnam are refreshed on a daily basis.
How many operators does momondo search for flights from Ontario Airport to Vietnam?
As of August 2026, there are 5 operators available to choose from for flights from Ontario Airport to Vietnam.
How old do you have to be to fly from Ontario Airport to Vietnam?
Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Ontario Airport to Vietnam.
What documentation or ID do you need to fly to Vietnam?
The required travel and health documents for your Vietnam 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 Vietnam. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

Best airlines flying from Ontario to Vietnam

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

Airline	Rating	Free Cancellation	Price
Korean Air	PriceFrom $611	Free Cancellation	Rating 8.4 1,221 reviews	Search Korean Air flights
Delta	PriceFrom $656	Free Cancellation	Rating 7.8 8,503 reviews	Search Delta flights
China Airlines	PriceFrom $691	Free Cancellation	Rating 8.3 841 reviews	Search China Airlines flights
Asiana Airlines	PriceFrom $735	Free Cancellation	Rating 8.1 558 reviews	Search Asiana Airlines flights
STARLUX Airlines	PriceFrom $743	Free Cancellation	Rating 8.8 371 reviews	Search STARLUX Airlines flights

Why use momondo?

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

Finding the right flight to Vietnam from Ontario is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to Vietnam quick and easy, saving you time and money.

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

momondo does allow users to show only those flights to Vietnam from Ontario which offer a flexible booking policy as well as other useful filters and features.

How can momondo help me find flights from Ontario to Vietnam?

Once all potential Ontario to Vietnam flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

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

If you are simply researching potential flights to Vietnam, momondo offers a useful price alert feature which will track prices for flights to Vietnam from Ontario and alert you when they change.