Cheap flights from Ontario to Vietnam from $379
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 3/9. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Fly from
Fly to
Route
Depart
Return
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 3/3
11:40 pm-1:57 pm
2 stops29h 17m
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
Thu 2/18
7:55 am-1:57 pm
2 stops21h 02m
OntarioHo Chi Minh City
ONT Ontario - SGN Ho Chi Minh City
ONTSGN
Ontario
Sun 3/7
7:00 am-10:25 pm
2 stops24h 25m
Ho Chi Minh City
Sun 5/2
11:45 pm-5:17 pm
2 stops31h 32m
OntarioHo Chi Minh City
ONT Ontario - SGN Ho Chi Minh City
ONTSGN
Ontario
Tue 3/9
7:00 am-10:25 pm
2 stops24h 25m
Ho Chi Minh City
Fri 5/7
7:30 am-5:17 pm
2 stops23h 47m
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
OntarioHo Chi Minh City
ONT Ontario - SGN Ho Chi Minh City
ONTSGN
Ontario
Mon 10/19
12:10 am-9:40 am
1 stop19h 30m
Ho Chi Minh City
Wed 10/28
11:00 am-6:05 pm
1 stop21h 05m
OntarioHo Chi Minh City
ONT Ontario - SGN Ho Chi Minh City
ONTSGN
Ontario
Thu 2/11
6:00 am-10:25 pm
2 stops25h 25m
Ho Chi Minh City
Thu 2/18
7:55 am-1:57 pm
2 stops21h 02m
OntarioHo Chi Minh City
ONT Ontario - SGN Ho Chi Minh City
ONTSGN
Ontario
Mon 2/1
7:00 am-10:25 pm
2 stops24h 25m
Ho Chi Minh City
Wed 3/3
11:00 am-5:05 pm
1 stop21h 05m
OntarioHo Chi Minh City
ONT Ontario - SGN Ho Chi Minh City
ONTSGN
Ontario
Wed 1/27
9:45 pm-4:50 pm
1 stop28h 05m
Ho Chi Minh City
Wed 2/24
11:40 am-3:55 pm
1 stop19h 15m
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
Mon 2/22
6:00 pm-3:55 pm
1 stop36h 55m
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 March is, on average, the cheapest month to fly to Vietnam from Ontario, with most prices found around $743. 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 $780.
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 $957 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 $796 on momondo.
What is the cheapest airline that flies from Ontario to Vietnam?
Delta, Korean Air, and STARLUX 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.
Cheap Ontario to Vietnam flight deals and tips
Find info about flight duration, direct flights, and airports for your flight from Ontario to Vietnam
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 | ||
|---|---|---|---|---|---|
| PriceFrom $611 | Free Cancellation | Rating 8.4 1,219 reviews | |||
| PriceFrom $656 | Free Cancellation | Rating 7.8 8,655 reviews | |||
| PriceFrom $690 | Free Cancellation | Rating 8.2 850 reviews | |||
| PriceFrom $735 | Free Cancellation | Rating 8.1 563 reviews | |||
| PriceFrom $743 | Free Cancellation | Rating 8.7 395 reviews |
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.