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

Delta, Korean Air, and China Airlines 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 22 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 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.

$411 Cheap Flights from Ontario to Vietnam in 2026/27

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.

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

$770STARLUX Airlines

Fri, Mar 12 - Sat, Apr 10

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

20h 10m1 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

$778China Airlines

Mon, Feb 22 - Thu, Apr 29

10:50 pm - 4:15 pmONT Ontario-SGN Ho Chi Minh City

26h 25m1 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

$779China Airlines

Sun, Feb 21 - Sun, Apr 25

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

Fri, Jan 29 - Sat, Feb 27

10:50 pm - 4:15 pmONT Ontario-SGN Ho Chi Minh City

26h 25m1 stop Taipei City Taiwan Taoyuan Intl

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

20h 45m1 stop Taichung City ChingChuanKang

$793Multiple Airlines

Thu, Mar 4 - Sat, Mar 27

11:50 pm - 4:15 pmONT Ontario-SGN Ho Chi Minh City

26h 25m1 stop Taipei City Taiwan Taoyuan Intl

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

20h 45m1 stop Taichung City ChingChuanKang

$793Multiple Airlines

Sat, Oct 31 - Tue, Nov 24

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

26h 55m2 stops Seattle/Tacoma Intl Incheon Intl

11:40 pm - 5:19 pmSGN Ho Chi Minh City-ONT Ontario

32h 39m2 stops Incheon Intl Seattle/Tacoma Intl

$807Delta

Wed, Oct 14 - Sun, Nov 15

7:00 am - 12:50 pmONT Ontario-SGN Ho Chi Minh City

38h 50m2 stops Seattle/Tacoma Intl Incheon Intl

7:55 am - 5:17 pmSGN Ho Chi Minh City-ONT Ontario

24h 22m2 stops Incheon Intl Seattle/Tacoma Intl

$807Delta

Tue, Jan 19 - Mon, Mar 8

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

40h 15m2 stops Seattle/Tacoma Intl Incheon Intl

1:55 pm - 5:12 pmSGN Ho Chi Minh City-ONT Ontario

41h 17m2 stops Incheon Intl Seattle/Tacoma Intl

$812Korean Air

Wed, Oct 14 - Sun, Oct 18

7:00 am - 10:25 pmONT Ontario-SGN Ho Chi Minh City

24h 25m2 stops Seattle/Tacoma Intl Incheon Intl

7:55 am - 1:57 pmSGN Ho Chi Minh City-ONT Ontario

21h 02m2 stops Incheon Intl Seattle/Tacoma Intl

$812Korean Air

Tue, Jan 12 - Tue, Feb 16

Cheap last minute flights

Enter your travel dates to find the best prices.

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

27h 15m2 stops Seattle/Tacoma Intl Incheon Intl

1:55 pm - 5:12 pmSGN Ho Chi Minh City-ONT Ontario

41h 17m2 stops Incheon Intl Seattle/Tacoma Intl

$807Delta

Wed, Sep 23 - Tue, Oct 13

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

26h 10m2 stops Seattle/Tacoma Intl Incheon Intl

7:30 am - 5:12 pmSGN Ho Chi Minh City-ONT Ontario

23h 42m2 stops Incheon Intl Seattle/Tacoma Intl

$812Korean Air

Tue, Sep 22 - Tue, Oct 13

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

27h 15m2 stops Seattle/Tacoma Intl Incheon Intl

11:35 pm - 5:19 pmSGN Ho Chi Minh City-ONT Ontario

31h 44m2 stops Incheon Intl Seattle/Tacoma Intl

$812Korean Air

Mon, Sep 21 - Wed, Sep 30

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

$835China Airlines

Mon, Sep 21 - Tue, Oct 13

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

$836China Airlines

Wed, Sep 23 - Fri, Oct 2

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

40h 35m2 stops Seattle/Tacoma Intl Incheon Intl

11:45 pm - 10:40 pmSGN Ho Chi Minh City-ONT Ontario

36h 55m2 stops Incheon Intl Seattle/Tacoma Intl

$857Delta

Mon, Sep 21 - Wed, Sep 30

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

26h 10m2 stops Salt Lake City Incheon Intl

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

23h 49m2 stops Incheon Intl Seattle/Tacoma Intl

$861Multiple Airlines

Mon, Sep 21 - Wed, Sep 30

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

$876STARLUX Airlines

Fri, Sep 25 - Mon, Oct 12

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

20h 45m1 stop Taipei City Taiwan Taoyuan Intl

6:05 pm - 5:05 pmSGN Ho Chi Minh City-ONT Ontario

37h 00m1 stop Taipei City Taiwan Taoyuan Intl

$876STARLUX Airlines

Fri, Sep 25 - Sun, Oct 4

6:08 am - 9:55 pmONT Ontario-SGN Ho Chi Minh City

25h 47m2 stops San Francisco Tokyo Haneda

7:00 am - 3:22 pmSGN Ho Chi Minh City-ONT Ontario

22h 22m2 stops Tokyo Narita San Francisco

$914United Airlines

Tue, Sep 22 - Wed, Oct 7

Save money when you book flights with momondo

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Not ready to book? to track prices.

Search flight deals

China Airlines flights from Ontario to Vietnam

Our best China Airlines deals on Ontario to Vietnam flight tickets

China Airlines

Feb 22

ONT10:50 pmOntario

20h 10m

1 stop

SGN10:00 amHo Chi Minh City

Apr 29

SGN10:50 amHo Chi Minh City

21h 10m

1 stop

ONT6:00 pmOntario

$778

China Airlines

Oct 13

ONT12:10 amOntario

26h 10m

1 stop

SGN4:20 pmHo Chi Minh City

Nov 4

SGN5:15 pmHo Chi Minh City

38h 50m

1 stop

ONT5:05 pmOntario

$780

China Airlines

Feb 22

ONT10:50 pmOntario

26h 25m

1 stop

SGN4:15 pmHo Chi Minh City

Apr 23

SGN10:50 amHo Chi Minh City

21h 10m

1 stop

ONT6:00 pmOntario

$789

Korean Air flights from Ontario to Vietnam

Our best Korean Air deals on Ontario to Vietnam flight tickets

Korean Air

Sep 29

ONT6:00 amOntario

27h 15m

2 stops

SGN11:15 pmHo Chi Minh City

Oct 13

SGN7:30 amHo Chi Minh City

23h 42m

2 stops

ONT5:12 pmOntario

$812

Korean Air

Mar 14

ONT7:00 amOntario

50h 50m

2 stops

SGN11:50 pmHo Chi Minh City

Jun 23

SGN7:30 amHo Chi Minh City

23h 47m

2 stops

ONT5:17 pmOntario

$818

Korean Air

Jan 3

ONT7:00 amOntario

38h 50m

2 stops

SGN12:50 pmHo Chi Minh City

May 2

SGN11:45 pmHo Chi Minh City

31h 32m

2 stops

ONT5:17 pmOntario

$819

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Quickest round-trip

OntarioHo Chi Minh City

ONT Ontario - SGN Ho Chi Minh City

ONTSGN

Ontario

Fri 3/12

9:45 pm-10:30 am

1 stop21h 45m

Ho Chi Minh City

Sat 4/10

11:30 am-5:05 pm

1 stop19h 35m

$770

OntarioHo Chi Minh City

ONT Ontario - SGN Ho Chi Minh City

ONTSGN

Ontario

Mon 2/22

10:50 pm-10:00 am

1 stop20h 10m

Ho Chi Minh City

Thu 4/29

10:50 am-6:00 pm

1 stop21h 10m

$778

OntarioHo Chi Minh City

ONT Ontario - SGN Ho Chi Minh City

ONTSGN

Ontario

Sun 2/21

10:50 pm-4:15 pm

1 stop26h 25m

Ho Chi Minh City

Sun 4/25

5:30 pm-6:00 pm

1 stop38h 30m

$779

OntarioHo Chi Minh City

ONT Ontario - SGN Ho Chi Minh City

ONTSGN

Ontario

Fri 1/29

9:45 pm-4:45 pm

1 stop28h 00m

Ho Chi Minh City

Sat 2/27

11:40 am-3:55 pm

1 stop19h 15m

$779

OntarioHo Chi Minh City

ONT Ontario - SGN Ho Chi Minh City

ONTSGN

Ontario

Thu 3/4

10:50 pm-4:15 pm

1 stop26h 25m

Ho Chi Minh City

Sat 3/27

11:20 am-6:05 pm

1 stop20h 45m

$793

OntarioHo Chi Minh City

ONT Ontario - SGN Ho Chi Minh City

ONTSGN

Ontario

Sat 10/31

11:50 pm-4:15 pm

1 stop26h 25m

Ho Chi Minh City

Tue 11/24

11:20 am-5:05 pm

1 stop20h 45m

$793

OntarioHo Chi Minh City

ONT Ontario - SGN Ho Chi Minh City

ONTSGN

Ontario

Wed 10/14

6:20 am-11:15 pm

2 stops26h 55m

Ho Chi Minh City

Sun 11/15

11:40 pm-5:19 pm

2 stops32h 39m

$807

OntarioHo Chi Minh City

ONT Ontario - SGN Ho Chi Minh City

ONTSGN

Ontario

Tue 1/19

7:00 am-12:50 pm

2 stops38h 50m

Ho Chi Minh City

Mon 3/8

7:55 am-5:17 pm

2 stops24h 22m

$807

OntarioHo Chi Minh City

ONT Ontario - SGN Ho Chi Minh City

ONTSGN

Ontario

Wed 10/14

6:20 am-12:35 pm

2 stops40h 15m

Ho Chi Minh City

Sun 10/18

1:55 pm-5:12 pm

2 stops41h 17m

$812

OntarioHo Chi Minh City

ONT Ontario - SGN Ho Chi Minh City

ONTSGN

Ontario

Tue 1/12

7:00 am-10:25 pm

2 stops24h 25m

Ho Chi Minh City

Tue 2/16

7:55 am-1:57 pm

2 stops21h 02m

$812

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 $775.

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 $954 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 $791 on momondo.

Can stopping save me money on Ontario to Vietnam flights?

You could potentially save up to 18% 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	$411
Fastest flight time	19h 25m
Direct flights	None

The best one-way flight to Vietnam from Ontario in the past 72 hours is $411. The best round-trip flight deal from Ontario to Vietnam found on momondo in the last 72 hours is $770.

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 1,219 reviews	Search Korean Air flights
Delta	PriceFrom $656	Free Cancellation	Rating 7.8 8,592 reviews	Search Delta flights
China Airlines	PriceFrom $689	Free Cancellation	Rating 8.3 847 reviews	Search China Airlines flights
Asiana Airlines	PriceFrom $735	Free Cancellation	Rating 8.1 562 reviews	Search Asiana Airlines flights
STARLUX Airlines	PriceFrom $742	Free Cancellation	Rating 8.7 385 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.