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 China 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 October 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.

$374 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.

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

24h 25m2 stops Seattle/Tacoma Intl Incheon Intl

7:55 am - 10:43 pmSGN Ho Chi Minh City-ONT Ontario

29h 48m2 stops Incheon Intl Seattle/Tacoma Intl

$753Korean Air

Wed, Jan 6 - Thu, Jan 28

3:30 pm - 10:25 pmONT Ontario-SGN Ho Chi Minh City

39h 55m2 stops Seattle/Tacoma Intl Incheon Intl

7:55 am - 10:43 pmSGN Ho Chi Minh City-ONT Ontario

29h 48m2 stops Incheon Intl Seattle/Tacoma Intl

$753Korean Air

Mon, Jan 25 - Tue, Feb 16

7:00 am - 9:45 pmONT Ontario-HAN Hanoi Noibai

23h 45m2 stops Seattle/Tacoma Intl Incheon Intl

11:05 pm - 10:43 pmHAN Hanoi Noibai-ONT Ontario

38h 38m2 stops Incheon Intl Seattle/Tacoma Intl

$760Delta

Mon, Jan 11 - Sun, Jan 31

7:00 am - 9:45 pmONT Ontario-HAN Hanoi Noibai

23h 45m2 stops Seattle/Tacoma Intl Incheon Intl

11:05 pm - 10:43 pmHAN Hanoi Noibai-ONT Ontario

38h 38m2 stops Incheon Intl Seattle/Tacoma Intl

$760Delta

Mon, Jan 11 - Tue, Feb 2

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

26h 25m1 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

$783China Airlines

Thu, Jan 14 - Thu, Jan 28

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

19h 30m1 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

$788China Airlines

Thu, Oct 22 - Fri, Oct 30

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

$801Multiple Airlines

Mon, Jan 25 - Wed, Feb 17

12:01 pm - 11:00 amONT Ontario-SGN Ho Chi Minh City

32h 59m2 stops San Francisco Incheon Intl

12:10 am - 7:30 pmSGN Ho Chi Minh City-ONT Ontario

34h 20m2 stops Incheon Intl San Francisco

$810Multiple Airlines

Mon, Oct 26 - Sun, Nov 8

9:45 pm - 4:50 pmONT Ontario-SGN Ho Chi Minh City

28h 05m1 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

$842STARLUX Airlines

Sat, Jan 30 - Sat, Mar 6

9:45 pm - 4:50 pmONT Ontario-SGN Ho Chi Minh City

28h 05m1 stop Taipei City Taiwan Taoyuan Intl

6:00 pm - 3:55 pmSGN Ho Chi Minh City-ONT Ontario

36h 55m1 stop Taipei City Taiwan Taoyuan Intl

$842STARLUX Airlines

Tue, Jan 26 - Thu, Feb 18

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 Salt Lake City Incheon Intl

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

41h 17m2 stops Incheon Intl Seattle/Tacoma Intl

$817Delta

Sat, Oct 3 - Mon, Oct 19

1:04 pm - 11:15 pmONT Ontario-SGN Ho Chi Minh City

44h 11m2 stops Salt Lake City Incheon Intl

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

29h 13m2 stops Incheon Intl Seattle/Tacoma Intl

$822Delta

Sat, Oct 3 - Mon, Oct 19

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

$850STARLUX Airlines

Mon, Oct 5 - Wed, Oct 21

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

$870China Airlines

Sat, Oct 3 - Tue, Oct 6

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

19h 30m1 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

$870China Airlines

Fri, Oct 2 - Mon, Oct 19

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

27h 15m2 stops Salt Lake City Incheon Intl

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

23h 42m2 stops Incheon Intl Seattle/Tacoma Intl

$871Multiple Airlines

Sat, Oct 3 - Mon, Oct 19

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

26h 10m2 stops Salt Lake City Incheon Intl

11:45 pm - 5:17 pmSGN Ho Chi Minh City-ONT Ontario

31h 32m2 stops Incheon Intl Seattle/Tacoma Intl

$872Korean Air

Sun, Oct 4 - Sun, Apr 4

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

26h 10m2 stops Seattle/Tacoma Intl Incheon Intl

11:35 pm - 5:12 pmSGN Ho Chi Minh City-ONT Ontario

31h 37m2 stops Incheon Intl Seattle/Tacoma Intl

$872Multiple Airlines

Sun, Oct 4 - Tue, Oct 6

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

27h 15m2 stops Salt Lake City Incheon Intl

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

23h 42m2 stops Incheon Intl Seattle/Tacoma Intl

$873Korean Air

Sun, Oct 4 - Mon, Oct 12

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

27h 25m1 stop Taipei City Taiwan Taoyuan Intl

6:00 pm - 3:55 pmSGN Ho Chi Minh City-ONT Ontario

36h 55m1 stop Taipei City Taiwan Taoyuan Intl

$876STARLUX Airlines

Mon, Oct 5 - 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

Feb 16

ONT10:50 pmOntario

26h 25m

1 stop

SGN4:15 pmHo Chi Minh City

Mar 31

SGN10:50 amHo Chi Minh City

21h 10m

1 stop

ONT6:00 pmOntario

$790

China Airlines

Jan 4

ONT10:50 pmOntario

26h 25m

1 stop

SGN4:15 pmHo Chi Minh City

Jan 20

SGN11:00 amHo Chi Minh City

21h 05m

1 stop

ONT5:05 pmOntario

$791

China Airlines

Jan 11

ONT10:50 pmOntario

26h 25m

1 stop

SGN4:15 pmHo Chi Minh City

Jan 18

SGN11:00 amHo Chi Minh City

21h 05m

1 stop

ONT5:05 pmOntario

$792

Korean Air flights from Ontario to Vietnam

Our best Korean Air deals on Ontario to Vietnam flight tickets

Korean Air

Jan 6

ONT7:00 amOntario

24h 25m

2 stops

SGN10:25 pmHo Chi Minh City

Feb 16

SGN7:55 amHo Chi Minh City

21h 02m

2 stops

ONT1:57 pmOntario

$753

Korean Air

Jan 27

ONT7:00 amOntario

25h 50m

2 stops

SGN11:50 pmHo Chi Minh City

Feb 18

SGN7:55 amHo Chi Minh City

21h 02m

2 stops

ONT1:57 pmOntario

$758

Korean Air

Jan 27

ONT7:00 amOntario

25h 50m

2 stops

SGN11:50 pmHo Chi Minh City

Feb 17

SGN7:55 amHo Chi Minh City

21h 02m

2 stops

ONT1:57 pmOntario

$759

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

OntarioHo Chi Minh City

ONT Ontario - SGN Ho Chi Minh City

ONTSGN

Ontario

Wed 1/6

7:00 am-10:25 pm

2 stops24h 25m

Ho Chi Minh City

Thu 1/28

7:55 am-10:43 pm

2 stops29h 48m

$753

OntarioHo Chi Minh City

ONT Ontario - SGN Ho Chi Minh City

ONTSGN

Ontario

Mon 1/25

3:30 pm-10:25 pm

2 stops39h 55m

Ho Chi Minh City

Tue 2/16

7:55 am-10:43 pm

2 stops29h 48m

$753

OntarioHanoi

ONT Ontario - HAN Hanoi Noibai

ONTHAN

Ontario

Mon 1/11

7:00 am-9:45 pm

2 stops23h 45m

Hanoi Noibai

Sun 1/31

11:05 pm-10:43 pm

2 stops38h 38m

$760

OntarioHanoi

ONT Ontario - HAN Hanoi Noibai

ONTHAN

Ontario

Mon 1/11

7:00 am-9:45 pm

2 stops23h 45m

Hanoi Noibai

Tue 2/2

11:05 pm-10:43 pm

2 stops38h 38m

$760

OntarioHo Chi Minh City

ONT Ontario - SGN Ho Chi Minh City

ONTSGN

Ontario

Thu 1/14

10:50 pm-4:15 pm

1 stop26h 25m

Ho Chi Minh City

Thu 1/28

11:00 am-5:05 pm

1 stop21h 05m

$783

Quickest round-trip

OntarioHo Chi Minh City

ONT Ontario - SGN Ho Chi Minh City

ONTSGN

Ontario

Thu 10/22

12:10 am-9:40 am

1 stop19h 30m

Ho Chi Minh City

Fri 10/30

11:00 am-6:05 pm

1 stop21h 05m

$788

OntarioHo Chi Minh City

ONT Ontario - SGN Ho Chi Minh City

ONTSGN

Ontario

Mon 1/25

7:00 am-10:25 pm

2 stops24h 25m

Ho Chi Minh City

Wed 2/17

7:55 am-1:57 pm

2 stops21h 02m

$801

OntarioHo Chi Minh City

ONT Ontario - SGN Ho Chi Minh City

ONTSGN

Ontario

Mon 10/26

12:01 pm-11:00 am

2 stops32h 59m

Ho Chi Minh City

Sun 11/8

12:10 am-7:30 pm

2 stops34h 20m

$810

OntarioHo Chi Minh City

ONT Ontario - SGN Ho Chi Minh City

ONTSGN

Ontario

Sat 1/30

9:45 pm-4:50 pm

1 stop28h 05m

Ho Chi Minh City

Sat 3/6

11:40 am-3:55 pm

1 stop19h 15m

$842

OntarioHo Chi Minh City

ONT Ontario - SGN Ho Chi Minh City

ONTSGN

Ontario

Tue 1/26

9:45 pm-4:50 pm

1 stop28h 05m

Ho Chi Minh City

Thu 2/18

6:00 pm-3:55 pm

1 stop36h 55m

$842

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 $740. If you don’t want to visit Vietnam in March, then you should wait until April to fly from Ontario, when ticket prices are also cheap, with an average price of $777.

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 $953 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	$374
Fastest flight time	19h 25m
Direct flights	None

The best one-way flight to Vietnam from Ontario in the past 72 hours is $374. The best round-trip flight deal from Ontario to Vietnam found on momondo in the last 72 hours is $753.

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 October 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 1,218 reviews	Search Korean Air flights
Delta	PriceFrom $656	Free Cancellation	Rating 7.8 8,631 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 8.1 563 reviews	Search Asiana Airlines flights
STARLUX Airlines	PriceFrom $743	Free Cancellation	Rating 8.7 390 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.