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Cheap flights from Ontario to Vietnam from $293

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 4/22. 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
7:00 am - 9:35 pm
ONT
-
HAN
24h 35m
2 stops
Korean Air Logo
11:10 pm - 5:16 pm
HAN
-
ONT
32h 06m
2 stops
$640Korean Air
Tue, Apr 28 - Sat, May 9
Korean Air Logo
7:00 am - 9:35 pm
ONT
-
HAN
24h 35m
2 stops
Korean Air Logo
11:10 pm - 5:10 pm
HAN
-
ONT
32h 00m
2 stops
$641Korean Air
Tue, Apr 28 - Sun, May 10
Korean Air Logo
7:00 am - 9:35 pm
ONT
-
HAN
24h 35m
2 stops
Korean Air Logo
11:10 pm - 5:16 pm
HAN
-
ONT
32h 06m
2 stops
$690Korean Air
Mon, Apr 20 - Thu, May 14
Korean Air Logo
7:00 am - 9:35 pm
ONT
-
HAN
24h 35m
2 stops
Korean Air Logo
12:00 pm - 5:15 pm
HAN
-
ONT
43h 15m
2 stops
$691Korean Air
Mon, Apr 20 - Thu, Apr 30
China Airlines Logo
12:10 am - 4:30 pm
ONT
-
DAD
26h 20m
1 stop
China Airlines Logo
5:30 pm - 6:40 pm
DAD
-
ONT
39h 10m
1 stop
$697China Airlines
Sun, May 3 - Mon, Jul 6
Korean Air Logo
6:48 am - 11:15 pm
ONT
-
SGN
26h 27m
2 stops
Korean Air Logo
7:35 am - 5:16 pm
SGN
-
ONT
23h 41m
2 stops
$702Korean Air
Thu, May 7 - Thu, Jul 2
China Airlines Logo
10:50 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
$703China Airlines
Sun, Feb 15 - Wed, Mar 11
Multiple Airlines Logo
6:00 am - 11:20 pm
ONT
-
SGN
26h 20m
2 stops
Multiple Airlines Logo
2:05 pm - 5:13 pm
SGN
-
ONT
41h 08m
2 stops
$711Multiple Airlines
Sat, Feb 14 - Sat, Mar 14
United Airlines Logo
6:00 am - 9:55 pm
ONT
-
SGN
25h 55m
2 stops
United Airlines Logo
7:00 am - 5:52 pm
SGN
-
ONT
24h 52m
2 stops
$714United Airlines
Tue, Apr 21 - Tue, May 19
Delta Logo
7:00 am - 9:05 pm
ONT
-
DAD
24h 05m
2 stops
Delta Logo
10:55 pm - 5:16 pm
DAD
-
ONT
32h 21m
2 stops
$756Delta
Mon, May 4 - Wed, Jul 8

United Airlines flights from Ontario to Vietnam

Our best United Airlines deals on Ontario to Vietnam flight tickets
United Airlines
Apr 21
ONT6:00 amOntario
25h 55m
2 stops
SGN9:55 pmHo Chi Minh City
May 19
SGN7:00 amHo Chi Minh City
24h 52m
2 stops
ONT5:52 pmOntario
$714
United Airlines
Apr 13
ONT6:00 amOntario
28h 15m
2 stops
SGN12:15 amHo Chi Minh City
May 11
SGN7:00 amHo Chi Minh City
24h 52m
2 stops
ONT5:52 pmOntario
$717
United Airlines
Jul 21
ONT1:33 pmOntario
42h 22m
2 stops
SGN9:55 pmHo Chi Minh City
Sep 2
SGN11:15 pmHo Chi Minh City
32h 32m
2 stops
ONT5:47 pmOntario
$721

Delta flights from Ontario to Vietnam

Our best Delta deals on Ontario to Vietnam flight tickets
Delta
Mar 3
ONT7:30 amOntario
24h 50m
2 stops
SGN11:20 pmHo Chi Minh City
Mar 13
SGN8:00 amHo Chi Minh City
23h 12m
2 stops
ONT5:12 pmOntario
$706
Delta
May 6
ONT7:00 amOntario
25h 05m
2 stops
SGN10:05 pmHo Chi Minh City
Jun 27
SGN7:35 amHo Chi Minh City
23h 41m
2 stops
ONT5:16 pmOntario
$716
Delta
Feb 14
ONT3:30 pmOntario
54h 20m
2 stops
SGN12:50 pmHo Chi Minh City
Mar 8
SGN2:05 pmHo Chi Minh City
59h 12m
2 stops
ONT10:17 amOntario
$739

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 31, 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 4/28

7:00 am-9:35 pm

2 stops24h 35m

Hanoi Noibai

Sat 5/9

11:10 pm-5:16 pm

2 stops32h 06m

$640

OntarioHanoi

ONT - HAN

ONTHAN

Ontario

Tue 4/28

7:00 am-9:35 pm

2 stops24h 35m

Hanoi Noibai

Sun 5/10

11:10 pm-5:10 pm

2 stops32h 00m

$641

OntarioHanoi

ONT - HAN

ONTHAN

Ontario

Mon 4/20

7:00 am-9:35 pm

2 stops24h 35m

Hanoi Noibai

Thu 5/14

11:10 pm-5:16 pm

2 stops32h 06m

$690

OntarioHanoi

ONT - HAN

ONTHAN

Ontario

Mon 4/20

7:00 am-9:35 pm

2 stops24h 35m

Hanoi Noibai

Thu 4/30

12:00 pm-5:15 pm

2 stops43h 15m

$691

OntarioDa Nang

ONT - DAD

ONTDAD

Ontario

Sun 5/3

12:10 am-4:30 pm

1 stop26h 20m

Da Nang

Mon 7/6

5:30 pm-6:40 pm

1 stop39h 10m

$697

OntarioHo Chi Minh City

ONT - SGN

ONTSGN

Ontario

Thu 5/7

6:48 am-11:15 pm

2 stops26h 27m

Ho Chi Minh City

Thu 7/2

7:35 am-5:16 pm

2 stops23h 41m

$702

OntarioHo Chi Minh City

ONT - SGN

ONTSGN

Ontario

Sun 2/15

10:50 pm-4:50 pm

1 stop27h 00m

Ho Chi Minh City

Wed 3/11

11:00 am-5:50 pm

1 stop20h 50m

$703

OntarioHo Chi Minh City

ONT - SGN

ONTSGN

Ontario

Sat 2/14

6:00 am-11:20 pm

2 stops26h 20m

Ho Chi Minh City

Sat 3/14

2:05 pm-5:13 pm

2 stops41h 08m

$711

OntarioHo Chi Minh City

ONT - SGN

ONTSGN

Ontario

Tue 4/21

6:00 am-9:55 pm

2 stops25h 55m

Ho Chi Minh City

Tue 5/19

7:00 am-5:52 pm

2 stops24h 52m

$714

OntarioDa Nang

ONT - DAD

ONTDAD

Ontario

Mon 5/4

7:00 am-9:05 pm

2 stops24h 05m

Da Nang

Wed 7/8

10:55 pm-5:16 pm

2 stops32h 21m

$756

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 $989 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 1% 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

18h 50m

Direct flights

None
The fastest flight from Ontario to Vietnam takes 18h 50m
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
China AirlinesPriceFrom $304Free CancellationRating
8.3
803 reviews
Search China Airlines flights
Cathay PacificPriceFrom $628Free CancellationRating
7.6
1,153 reviews
Search Cathay Pacific flights
Korean AirPriceFrom $679Free CancellationRating
8.4
1,188 reviews
Search Korean Air flights
STARLUX AirlinesPriceFrom $745Free CancellationRating
8.9
269 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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