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 22 different airlines that fly to Vietnam on a routine basis, so you have a few additional options to choose from.

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

Delta, Korean Air, and United Airlines are the most popular carriers operating 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 September 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.

$413 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.

10:50 pm - 10:00 amONT Ontario-SGN Ho Chi Minh City

20h 10m1 stop Taipei City Taiwan Taoyuan Intl

11:00 am - 5:05 pmSGN Ho Chi Minh City-ONT Ontario

21h 05m1 stop Taipei City Taiwan Taoyuan Intl

$772China Airlines

Tue, Feb 16 - Sat, Mar 13

10:50 pm - 10:00 amONT Ontario-SGN Ho Chi Minh City

20h 10m1 stop Taipei City Taiwan Taoyuan Intl

11:00 am - 6:05 pmSGN Ho Chi Minh City-ONT Ontario

21h 05m1 stop Taipei City Taiwan Taoyuan Intl

$772China Airlines

Tue, Feb 16 - Tue, Mar 16

9:45 pm - 10:30 amONT Ontario-SGN Ho Chi Minh City

21h 45m1 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

$779STARLUX Airlines

Mon, Mar 1 - Wed, Mar 31

9:45 pm - 4:45 pmONT Ontario-SGN Ho Chi Minh City

28h 00m1 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

$779STARLUX Airlines

Sat, Jan 23 - Sat, Feb 13

6:00 am - 10:10 pmONT Ontario-SGN Ho Chi Minh City

26h 10m2 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

$793Korean Air

Sun, Sep 20 - Thu, Sep 24

6:00 pm - 11:15 pmONT Ontario-SGN Ho Chi Minh City

39h 15m2 stops Seattle/Tacoma Intl Incheon Intl

7:30 am - 10:43 pmSGN Ho Chi Minh City-ONT Ontario

29h 13m2 stops Incheon Intl Seattle/Tacoma Intl

$804Delta

Tue, Sep 29 - Fri, Oct 16

6:00 am - 11:15 pmONT Ontario-SGN Ho Chi Minh City

27h 15m2 stops Seattle/Tacoma Intl Incheon Intl

1:55 pm - 8:55 amSGN Ho Chi Minh City-ONT Ontario

57h 00m2 stops Incheon Intl Salt Lake City

$804Delta

Fri, Oct 2 - Sat, Oct 17

10:50 pm - 10:00 amONT Ontario-SGN Ho Chi Minh City

20h 10m1 stop Taipei City Taiwan Taoyuan Intl

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

20h 45m1 stop Taichung City ChingChuanKang

$805Multiple Airlines

Fri, Mar 5 - Sat, Mar 27

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

25h 50m2 stops Seattle/Tacoma Intl Incheon Intl

2:05 pm - 5:12 pmSGN Ho Chi Minh City-ONT Ontario

41h 07m2 stops Incheon Intl Seattle/Tacoma Intl

$812Korean Air

Mon, Oct 19 - Fri, Oct 30

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

25h 50m2 stops Seattle/Tacoma Intl Incheon Intl

7:55 am - 5:19 pmSGN Ho Chi Minh City-ONT Ontario

24h 24m2 stops Incheon Intl Seattle/Tacoma Intl

$860Multiple Airlines

Thu, Oct 22 - Thu, Nov 12

Cheap last minute flights

Enter your travel dates to find the best prices.

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

$816China Airlines

Thu, Sep 10 - Sat, Sep 19

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

$820China Airlines

Thu, Sep 10 - Sun, Sep 20

6:00 am - 11:15 pmONT Ontario-SGN Ho Chi Minh City

27h 15m2 stops Salt Lake City Incheon Intl

7:55 am - 11:00 pmSGN Ho Chi Minh City-ONT Ontario

30h 05m2 stops Incheon Intl Seattle/Tacoma Intl

$827Delta

Fri, Sep 11 - Wed, Nov 11

6:00 am - 10:10 pmONT Ontario-SGN Ho Chi Minh City

26h 10m2 stops Seattle/Tacoma Intl Incheon Intl

7:55 am - 11:49 pmSGN Ho Chi Minh City-ONT Ontario

30h 54m2 stops Incheon Intl Salt Lake City

$827Delta

Thu, Sep 10 - Tue, Nov 10

6:00 am - 12:35 pmONT Ontario-SGN Ho Chi Minh City

40h 35m2 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

Tue, Sep 8 - Fri, Sep 11

6:00 am - 11:15 pmONT Ontario-SGN Ho Chi Minh City

27h 15m2 stops Seattle/Tacoma Intl Incheon Intl

1:55 pm - 5:19 pmSGN Ho Chi Minh City-ONT Ontario

41h 24m2 stops Incheon Intl Seattle/Tacoma Intl

$832Korean Air

Sun, Sep 13 - Sun, Sep 27

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

18h 55m1 stop Taipei City Taiwan Taoyuan Intl

11:20 am - 5:05 pmSGN Ho Chi Minh City-ONT Ontario

20h 45m1 stop Taichung City ChingChuanKang

$834Multiple Airlines

Wed, Sep 9 - Tue, Nov 10

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

18h 55m1 stop Taipei City Taiwan Taoyuan Intl

11:20 am - 5:05 pmSGN Ho Chi Minh City-ONT Ontario

20h 45m1 stop Taichung City ChingChuanKang

$834Multiple Airlines

Tue, Sep 8 - Mon, Nov 9

7:11 pm - 10:15 amONT Ontario-SGN Ho Chi Minh City

25h 04m2 stops Phoenix Sky Harbor Intl Taipei City Taiwan Taoyuan Intl

5:50 pm - 3:55 pmSGN Ho Chi Minh City-ONT Ontario

37h 05m1 stop Taipei City Taiwan Taoyuan Intl

$1,015STARLUX Airlines

Thu, Sep 10 - Tue, Nov 10

7:11 pm - 10:15 amONT Ontario-SGN Ho Chi Minh City

25h 04m2 stops Phoenix Sky Harbor Intl 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

$1,015STARLUX Airlines

Thu, Sep 10 - Wed, Nov 11

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Korean Air flights from Ontario to Vietnam

Our best Korean Air deals on Ontario to Vietnam flight tickets

Korean Air

Sep 20

ONT6:00 amOntario

26h 10m

2 stops

SGN10:10 pmHo Chi Minh City

Sep 24

SGN7:30 amHo Chi Minh City

29h 10m

2 stops

ONT10:40 pmOntario

$793

Korean Air

Sep 21

ONT6:00 amOntario

27h 15m

2 stops

SGN11:15 pmHo Chi Minh City

Sep 30

SGN11:45 pmHo Chi Minh City

31h 34m

2 stops

ONT5:19 pmOntario

$812

Korean Air

Sep 21

ONT6:00 amOntario

27h 15m

2 stops

SGN11:15 pmHo Chi Minh City

Oct 19

SGN11:45 pmHo Chi Minh City

31h 27m

2 stops

ONT5:12 pmOntario

$818

China Airlines flights from Ontario to Vietnam

Our best China Airlines deals on Ontario to Vietnam flight tickets

China Airlines

Feb 16

ONT10:50 pmOntario

20h 10m

1 stop

SGN10:00 amHo Chi Minh City

Mar 16

SGN11:00 amHo Chi Minh City

21h 05m

1 stop

ONT6:05 pmOntario

$772

China Airlines

Jan 18

ONT10:50 pmOntario

20h 10m

1 stop

SGN10:00 amHo Chi Minh City

Mar 23

SGN11:00 amHo Chi Minh City

21h 05m

1 stop

ONT6:05 pmOntario

$783

China Airlines

Feb 21

ONT10:50 pmOntario

20h 10m

1 stop

SGN10:00 amHo Chi Minh City

Apr 24

SGN10:50 amHo Chi Minh City

21h 10m

1 stop

ONT6:00 pmOntario

$788

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

OntarioHo Chi Minh City

ONT Ontario - SGN Ho Chi Minh City

ONTSGN

Ontario

Tue 2/16

10:50 pm-10:00 am

1 stop20h 10m

Ho Chi Minh City

Sat 3/13

11:00 am-5:05 pm

1 stop21h 05m

$772

OntarioHo Chi Minh City

ONT Ontario - SGN Ho Chi Minh City

ONTSGN

Ontario

Tue 2/16

10:50 pm-10:00 am

1 stop20h 10m

Ho Chi Minh City

Tue 3/16

11:00 am-6:05 pm

1 stop21h 05m

$772

OntarioHo Chi Minh City

ONT Ontario - SGN Ho Chi Minh City

ONTSGN

Ontario

Mon 3/1

9:45 pm-10:30 am

1 stop21h 45m

Ho Chi Minh City

Wed 3/31

11:30 am-5:05 pm

1 stop19h 35m

$779

OntarioHo Chi Minh City

ONT Ontario - SGN Ho Chi Minh City

ONTSGN

Ontario

Sat 1/23

9:45 pm-4:45 pm

1 stop28h 00m

Ho Chi Minh City

Sat 2/13

11:40 am-3:55 pm

1 stop19h 15m

$779

OntarioHo Chi Minh City

ONT Ontario - SGN Ho Chi Minh City

ONTSGN

Ontario

Sun 9/20

6:00 am-10:10 pm

2 stops26h 10m

Ho Chi Minh City

Thu 9/24

7:30 am-10:40 pm

2 stops29h 10m

$793

OntarioHo Chi Minh City

ONT Ontario - SGN Ho Chi Minh City

ONTSGN

Ontario

Tue 9/29

6:00 pm-11:15 pm

2 stops39h 15m

Ho Chi Minh City

Fri 10/16

7:30 am-10:43 pm

2 stops29h 13m

$804

OntarioHo Chi Minh City

ONT Ontario - SGN Ho Chi Minh City

ONTSGN

Ontario

Fri 10/2

6:00 am-11:15 pm

2 stops27h 15m

Ho Chi Minh City

Sat 10/17

1:55 pm-8:55 am

2 stops57h 00m

$804

Quickest round-trip

OntarioHo Chi Minh City

ONT Ontario - SGN Ho Chi Minh City

ONTSGN

Ontario

Fri 3/5

10:50 pm-10:00 am

1 stop20h 10m

Ho Chi Minh City

Sat 3/27

11:20 am-6:05 pm

1 stop20h 45m

$805

OntarioHo Chi Minh City

ONT Ontario - SGN Ho Chi Minh City

ONTSGN

Ontario

Mon 10/19

6:20 am-10:10 pm

2 stops25h 50m

Ho Chi Minh City

Fri 10/30

2:05 pm-5:12 pm

2 stops41h 07m

$812

OntarioHo Chi Minh City

ONT Ontario - SGN Ho Chi Minh City

ONTSGN

Ontario

Thu 10/22

6:20 am-10:10 pm

2 stops25h 50m

Ho Chi Minh City

Thu 11/12

7:55 am-5:19 pm

2 stops24h 24m

$860

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 $738. 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 $764.

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 $958 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 $781 on momondo.

Can stopping save me money on Ontario to Vietnam flights?

You could potentially save up to 11% 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	$413
Fastest flight time	19h 25m
Direct flights	None

The best one-way flight to Vietnam from Ontario in the past 72 hours is $413. The best round-trip flight deal from Ontario to Vietnam found on momondo in the last 72 hours is $772.

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 September 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 8,548 reviews	Search Delta flights
China Airlines	PriceFrom $690	Free Cancellation	Rating 8.3 844 reviews	Search China Airlines flights
Asiana Airlines	PriceFrom $735	Free Cancellation	Rating 8.1 560 reviews	Search Asiana Airlines flights
STARLUX Airlines	PriceFrom $742	Free Cancellation	Rating 8.7 376 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.