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 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.

$416 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.

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

28h 00m1 stop Taipei City Taiwan Taoyuan Intl

11:40 am - 4:55 pmSGN Ho Chi Minh City-ONT Ontario

19h 15m1 stop Taipei City Taiwan Taoyuan Intl

$762STARLUX Airlines

Mon, Feb 1 - Mon, Mar 15

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

28h 00m1 stop 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

$762STARLUX Airlines

Wed, Jan 27 - Fri, Feb 26

12:10 am - 4:20 pmONT Ontario-SGN Ho Chi Minh City

26h 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

$781China Airlines

Sun, Oct 11 - Mon, Oct 19

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

26h 25m1 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

$790China Airlines

Sun, Mar 7 - Sun, Apr 11

6:00 am - 12:50 pmONT Ontario-SGN Ho Chi Minh City

39h 50m2 stops Salt Lake City Incheon Intl

7:55 am - 5:15 pmSGN Ho Chi Minh City-ONT Ontario

24h 20m2 stops Incheon Intl Seattle/Tacoma Intl

$807Delta

Mon, Nov 23 - Mon, Dec 14

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

38h 50m2 stops Seattle/Tacoma Intl Incheon Intl

7:55 am - 10:30 pmSGN Ho Chi Minh City-ONT Ontario

29h 35m2 stops Incheon Intl Salt Lake City

$807Delta

Sat, Nov 28 - Sat, Dec 5

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

24h 25m2 stops Seattle/Tacoma Intl Incheon Intl

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

31h 32m2 stops Incheon Intl Seattle/Tacoma Intl

$812Korean Air

Tue, Feb 9 - Sun, Mar 28

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

24h 25m2 stops Seattle/Tacoma Intl Incheon Intl

7:30 am - 5:17 pmSGN Ho Chi Minh City-ONT Ontario

23h 47m2 stops Incheon Intl Seattle/Tacoma Intl

$812Korean Air

Mon, Feb 8 - Tue, Mar 30

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

27h 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

$861Multiple Airlines

Sat, Oct 3 - Mon, Oct 19

6:00 am - 10:25 pmONT Ontario-SGN Ho Chi Minh City

25h 25m2 stops Salt Lake City Incheon Intl

11:40 pm - 5:15 pmSGN Ho Chi Minh City-ONT Ontario

32h 35m2 stops Incheon Intl Seattle/Tacoma Intl

$861Multiple Airlines

Fri, Nov 27 - Tue, Dec 1

Cheap last minute flights

Enter your travel dates to find the best prices.

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

26h 10m2 stops Seattle/Tacoma Intl Incheon Intl

11:45 pm - 10:43 pmSGN Ho Chi Minh City-ONT Ontario

36h 58m2 stops Incheon Intl Seattle/Tacoma Intl

$812Korean Air

Tue, Sep 15 - Wed, Oct 21

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

40h 35m2 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 15 - Thu, Oct 15

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

$826China Airlines

Thu, Sep 17 - Fri, Sep 25

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

$827China Airlines

Sun, Sep 13 - Mon, Oct 19

6:00 am - 9:35 pmONT Ontario-HAN Hanoi Noibai

25h 35m2 stops Salt Lake City Incheon Intl

11:05 pm - 5:12 pmHAN Hanoi Noibai-ONT Ontario

32h 07m2 stops Incheon Intl Seattle/Tacoma Intl

$852Delta

Thu, Sep 17 - Wed, Oct 28

6:00 am - 9:35 pmONT Ontario-HAN Hanoi Noibai

25h 35m2 stops Seattle/Tacoma Intl Incheon Intl

11:05 pm - 5:12 pmHAN Hanoi Noibai-ONT Ontario

32h 07m2 stops Incheon Intl Seattle/Tacoma Intl

$852Delta

Tue, Sep 15 - Wed, Oct 28

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

25h 14m2 stops San Francisco Tokyo Narita

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

22h 22m2 stops Tokyo Narita San Francisco

$887United Airlines

Mon, Sep 14 - Wed, Oct 14

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

25h 14m2 stops San Francisco Tokyo Narita

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

22h 22m2 stops Tokyo Narita San Francisco

$887United Airlines

Tue, Sep 15 - Thu, Oct 15

1:04 pm - 10:15 amONT Ontario-SGN Ho Chi Minh City

31h 11m2 stops Phoenix Sky Harbor Intl 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

$1,015STARLUX Airlines

Tue, Sep 15 - Tue, Oct 20

1:04 pm - 10:15 amONT Ontario-SGN Ho Chi Minh City

31h 11m2 stops Phoenix Sky Harbor Intl 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

$1,015STARLUX Airlines

Tue, Sep 15 - Thu, Oct 15

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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 21

ONT10:50 pmOntario

26h 25m

1 stop

SGN4:15 pmHo Chi Minh City

May 22

SGN10:50 amHo Chi Minh City

21h 10m

1 stop

ONT6:00 pmOntario

$790

China Airlines

Feb 24

ONT10:50 pmOntario

20h 10m

1 stop

SGN10:00 amHo Chi Minh City

Apr 27

SGN10:50 amHo Chi Minh City

21h 10m

1 stop

ONT6:00 pmOntario

$791

China Airlines

Jan 17

ONT10:50 pmOntario

26h 25m

1 stop

SGN4:15 pmHo Chi Minh City

Mar 1

SGN11:00 amHo Chi Minh City

21h 05m

1 stop

ONT5:05 pmOntario

$794

United Airlines flights from Ontario to Vietnam

Our best United Airlines deals on Ontario to Vietnam flight tickets

United Airlines

Sep 22

ONT5:00 amOntario

29h 15m

2 stops

SGN12:15 amHo Chi Minh City

Oct 29

SGN7:30 amHo Chi Minh City

22h 03m

2 stops

ONT3:33 pmOntario

$887

United Airlines

Sep 15

ONT6:08 amOntario

25h 57m

3 stops

SGN10:05 pmHo Chi Minh City

Oct 20

SGN7:00 amHo Chi Minh City

22h 22m

2 stops

ONT3:22 pmOntario

$888

United Airlines

Sep 25

ONT9:25 amOntario

22h 40m

2 stops

SGN10:05 pmHo Chi Minh City

Oct 2

SGN7:00 amHo Chi Minh City

22h 22m

2 stops

ONT3:22 pmOntario

$892

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

Mon 2/1

9:45 pm-4:45 pm

1 stop28h 00m

Ho Chi Minh City

Mon 3/15

11:40 am-4:55 pm

1 stop19h 15m

$762

OntarioHo Chi Minh City

ONT Ontario - SGN Ho Chi Minh City

ONTSGN

Ontario

Wed 1/27

9:45 pm-4:45 pm

1 stop28h 00m

Ho Chi Minh City

Fri 2/26

5:50 pm-3:55 pm

1 stop37h 05m

$762

OntarioHo Chi Minh City

ONT Ontario - SGN Ho Chi Minh City

ONTSGN

Ontario

Sun 10/11

12:10 am-4:20 pm

1 stop26h 10m

Ho Chi Minh City

Mon 10/19

10:50 am-6:00 pm

1 stop21h 10m

$781

OntarioHo Chi Minh City

ONT Ontario - SGN Ho Chi Minh City

ONTSGN

Ontario

Sun 3/7

10:50 pm-4:15 pm

1 stop26h 25m

Ho Chi Minh City

Sun 4/11

10:50 am-6:00 pm

1 stop21h 10m

$790

OntarioHo Chi Minh City

ONT Ontario - SGN Ho Chi Minh City

ONTSGN

Ontario

Mon 11/23

6:00 am-12:50 pm

2 stops39h 50m

Ho Chi Minh City

Mon 12/14

7:55 am-5:15 pm

2 stops24h 20m

$807

OntarioHo Chi Minh City

ONT Ontario - SGN Ho Chi Minh City

ONTSGN

Ontario

Sat 11/28

7:00 am-12:50 pm

2 stops38h 50m

Ho Chi Minh City

Sat 12/5

7:55 am-10:30 pm

2 stops29h 35m

$807

OntarioHo Chi Minh City

ONT Ontario - SGN Ho Chi Minh City

ONTSGN

Ontario

Tue 2/9

7:00 am-10:25 pm

2 stops24h 25m

Ho Chi Minh City

Sun 3/28

11:45 pm-5:17 pm

2 stops31h 32m

$812

OntarioHo Chi Minh City

ONT Ontario - SGN Ho Chi Minh City

ONTSGN

Ontario

Mon 2/8

7:00 am-10:25 pm

2 stops24h 25m

Ho Chi Minh City

Tue 3/30

7:30 am-5:17 pm

2 stops23h 47m

$812

OntarioHo Chi Minh City

ONT Ontario - SGN Ho Chi Minh City

ONTSGN

Ontario

Sat 10/3

6:00 am-11:15 pm

2 stops27h 15m

Ho Chi Minh City

Mon 10/19

7:30 am-10:43 pm

2 stops29h 13m

$861

OntarioHo Chi Minh City

ONT Ontario - SGN Ho Chi Minh City

ONTSGN

Ontario

Fri 11/27

6:00 am-10:25 pm

2 stops25h 25m

Ho Chi Minh City

Tue 12/1

11:40 pm-5:15 pm

2 stops32h 35m

$861

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 $767.

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 $795 on momondo.

Can stopping save me money on Ontario to Vietnam flights?

You could potentially save up to 14% 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	$416
Fastest flight time	19h 25m
Direct flights	None

The best one-way flight to Vietnam from Ontario in the past 72 hours is $416. The best round-trip flight deal from Ontario to Vietnam found on momondo in the last 72 hours is $762.

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 1,220 reviews	Search Korean Air flights
Delta	PriceFrom $656	Free Cancellation	Rating 7.8 8,568 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 8.1 561 reviews	Search Asiana Airlines flights
STARLUX Airlines	PriceFrom $742	Free Cancellation	Rating 8.7 378 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.