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Cheap flights from Ontario to Vietnam from $311

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Ontario to Vietnam departing on 5/4. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

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Find the cheapest flights from Ontario to Vietnam

Cheap round-trip flights

Enter your travel dates to find the best prices.
Korean Air Logo
6:00 am - 9:45 pm
ONT
-
HAN
25h 45m
2 stops
Korean Air Logo
11:10 pm - 5:16 pm
HAN
-
ONT
32h 06m
2 stops
$640Korean Air
Tue, Mar 17 - Wed, May 6
Korean Air Logo
7:30 am - 9:35 pm
ONT
-
HAN
24h 05m
2 stops
Korean Air Logo
12:00 pm - 5:15 pm
HAN
-
ONT
43h 15m
2 stops
$690Korean Air
Fri, Apr 17 - Sun, Apr 26
Delta Logo
6:00 am - 11:20 pm
ONT
-
SGN
27h 20m
2 stops
Delta Logo
7:35 am - 11:50 pm
SGN
-
ONT
30h 15m
2 stops
$691Delta
Tue, Mar 10 - Mon, Apr 6
China Airlines Logo
11:50 pm - 4:50 pm
ONT
-
SGN
27h 00m
1 stop
China Airlines Logo
11:00 am - 5:50 pm
SGN
-
ONT
20h 50m
1 stop
$693China Airlines
Thu, Mar 12 - Thu, Mar 19
Korean Air Logo
6:00 am - 11:20 pm
ONT
-
SGN
27h 20m
2 stops
Korean Air Logo
8:00 am - 5:13 pm
SGN
-
ONT
23h 13m
2 stops
$696Korean Air
Wed, Mar 11 - Thu, Mar 19
Delta Logo
3:30 pm - 11:20 pm
ONT
-
SGN
40h 50m
2 stops
Delta Logo
2:05 pm - 10:44 pm
SGN
-
ONT
47h 39m
2 stops
$698Delta
Wed, Jan 28 - Sun, Feb 8
China Airlines Logo
12:10 am - 9:40 am
ONT
-
SGN
19h 30m
1 stop
China Airlines Logo
10:50 am - 6:00 pm
SGN
-
ONT
21h 10m
1 stop
$699China Airlines
Thu, Apr 2 - Sat, Apr 25
China Airlines Logo
12:10 am - 9:40 am
ONT
-
SGN
19h 30m
1 stop
China Airlines Logo
5:30 pm - 6:00 pm
SGN
-
ONT
38h 30m
1 stop
$700China Airlines
Tue, May 12 - Wed, Jun 24
China Airlines Logo
11:50 pm - 4:50 pm
ONT
-
SGN
27h 00m
1 stop
China Airlines Logo
10:50 am - 6:00 pm
SGN
-
ONT
21h 10m
1 stop
$702China Airlines
Mon, Mar 9 - Wed, May 27
Delta Logo
7:30 am - 11:20 pm
ONT
-
SGN
24h 50m
2 stops
Delta Logo
8:00 am - 5:12 pm
SGN
-
ONT
23h 12m
2 stops
$706Delta
Tue, Feb 17 - Fri, Mar 13

China Airlines flights from Ontario to Vietnam

Our best China Airlines deals on Ontario to Vietnam flight tickets
China Airlines
Mar 12
ONT11:50 pmOntario
27h 00m
1 stop
SGN4:50 pmHo Chi Minh City
Mar 19
SGN11:00 amHo Chi Minh City
20h 50m
1 stop
ONT5:50 pmOntario
$693
China Airlines
Apr 2
ONT12:10 amOntario
19h 30m
1 stop
SGN9:40 amHo Chi Minh City
Apr 25
SGN10:50 amHo Chi Minh City
21h 10m
1 stop
ONT6:00 pmOntario
$699
China Airlines
May 12
ONT12:10 amOntario
19h 30m
1 stop
SGN9:40 amHo Chi Minh City
Jun 28
SGN10:50 amHo Chi Minh City
21h 10m
1 stop
ONT6:00 pmOntario
$700

Air China flights from Ontario to Vietnam

Our best Air China deals on Ontario to Vietnam flight tickets
Air China
Jan 22
ONT6:00 amOntario
25h 55m
2 stops
SGN10:55 pmHo Chi Minh City
Feb 6
SGN6:00 amHo Chi Minh City
20h 18m
2 stops
ONT11:18 amOntario
$733
Air China
Jan 20
ONT6:32 pmOntario
37h 23m
2 stops
SGN10:55 pmHo Chi Minh City
Feb 17
SGN6:00 amHo Chi Minh City
18h 58m
2 stops
ONT9:58 amOntario
$734

momondo Fare Finder

 
Customize your flight search to find flights from Ontario to Vietnam that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 832,500 searches. Data last updated January 14, 2026.
Use the filters below to find and compare flights from Ontario to Vietnam that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

OntarioHanoi

ONT - HAN

ONTHAN

Ontario

Tue 3/17

6:00 am-9:45 pm

2 stops25h 45m

Hanoi Noibai

Wed 5/6

11:10 pm-5:16 pm

2 stops32h 06m

$640

OntarioHanoi

ONT - HAN

ONTHAN

Ontario

Fri 4/17

7:30 am-9:35 pm

2 stops24h 05m

Hanoi Noibai

Sun 4/26

12:00 pm-5:15 pm

2 stops43h 15m

$690

OntarioHo Chi Minh City

ONT - SGN

ONTSGN

Ontario

Tue 3/10

6:00 am-11:20 pm

2 stops27h 20m

Ho Chi Minh City

Mon 4/6

7:35 am-11:50 pm

2 stops30h 15m

$691

OntarioHo Chi Minh City

ONT - SGN

ONTSGN

Ontario

Thu 3/12

11:50 pm-4:50 pm

1 stop27h 00m

Ho Chi Minh City

Thu 3/19

11:00 am-5:50 pm

1 stop20h 50m

$693

OntarioHo Chi Minh City

ONT - SGN

ONTSGN

Ontario

Wed 3/11

6:00 am-11:20 pm

2 stops27h 20m

Ho Chi Minh City

Thu 3/19

8:00 am-5:13 pm

2 stops23h 13m

$696

OntarioHo Chi Minh City

ONT - SGN

ONTSGN

Ontario

Wed 1/28

3:30 pm-11:20 pm

2 stops40h 50m

Ho Chi Minh City

Sun 2/8

2:05 pm-10:44 pm

2 stops47h 39m

$698

OntarioHo Chi Minh City

ONT - SGN

ONTSGN

Ontario

Thu 4/2

12:10 am-9:40 am

1 stop19h 30m

Ho Chi Minh City

Sat 4/25

10:50 am-6:00 pm

1 stop21h 10m

$699

OntarioHo Chi Minh City

ONT - SGN

ONTSGN

Ontario

Tue 5/12

12:10 am-9:40 am

1 stop19h 30m

Ho Chi Minh City

Wed 6/24

5:30 pm-6:00 pm

1 stop38h 30m

$700

OntarioHo Chi Minh City

ONT - SGN

ONTSGN

Ontario

Mon 3/9

11:50 pm-4:50 pm

1 stop27h 00m

Ho Chi Minh City

Wed 5/27

10:50 am-6:00 pm

1 stop21h 10m

$702

OntarioHo Chi Minh City

ONT - SGN

ONTSGN

Ontario

Tue 2/17

7:30 am-11:20 pm

2 stops24h 50m

Ho Chi Minh City

Fri 3/13

8:00 am-5:12 pm

2 stops23h 12m

$706

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Vietnam from

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

What is the cheapest month to fly to Vietnam?

The month of November is, on average, the cheapest month to fly to Vietnam from Ontario, with most prices found around $776. If you don’t want to visit Vietnam in November, then you should wait until October to fly from Ontario, when ticket prices are also cheap, with an average price of $779.

How far in advance should I book a flight 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 $991 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 $782 on momondo.

Can stopping save me money on Ontario to Vietnam flights?

You could potentially save up to 4% 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

Fastest flight time

19h 20m

Direct flights

None
The fastest flight from Ontario to Vietnam takes 19h 20m
There are no direct flights from Ontario to Vietnam. There are no popular flight routes from Ontario to Vietnam.
Search flight deals

  • 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?

  • 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
Asiana AirlinesPriceFrom $640Free CancellationRating
8.1
502 reviews
Search Asiana Airlines flights
Korean AirPriceFrom $679Free CancellationRating
8.4
1,187 reviews
Search Korean Air flights
China AirlinesPriceFrom $700Free CancellationRating
8.3
798 reviews
Search China Airlines flights
STARLUX AirlinesPriceFrom $746Free CancellationRating
8.9
263 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.

An easier way to manage your Vietnam trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.
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