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Cheap flights from Ontario to Vietnam from $338

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 1/22. 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
6:00 am - 9:45 pmONT-HAN
25h 45m2 stops
Korean Air Logo
11:05 pm - 5:13 pmHAN-ONT
32h 08m2 stops
$655Korean Air
Find Deal
Mon, Mar 16 - Wed, Mar 18
China Airlines Logo
12:10 am - 4:35 pmONT-DAD
26h 25m1 stop
China Airlines Logo
5:35 pm - 6:00 pmDAD-ONT
38h 25m1 stop
$701China Airlines
Find Deal
Sun, Apr 26 - Tue, May 26
China Airlines Logo
10:50 pm - 4:30 pmONT-HAN
26h 40m1 stop
China Airlines Logo
11:35 am - 4:50 pmHAN-ONT
20h 15m1 stop
$706China Airlines
Find Deal
Tue, Jan 13 - Tue, Jan 20
China Airlines Logo
11:50 pm - 10:00 amONT-SGN
20h 10m1 stop
China Airlines Logo
11:00 am - 5:50 pmSGN-ONT
20h 50m1 stop
$712China Airlines
Find Deal
Thu, Mar 12 - Thu, Mar 19
China Airlines Logo
12:10 am - 4:35 pmONT-DAD
26h 25m1 stop
China Airlines Logo
5:35 pm - 6:00 pmDAD-ONT
38h 25m1 stop
$714China Airlines
Find Deal
Sun, Mar 29 - Mon, Apr 20
China Airlines Logo
10:50 pm - 10:35 amONT-HAN
20h 45m1 stop
China Airlines Logo
11:35 am - 4:50 pmHAN-ONT
20h 15m1 stop
$715China Airlines
Find Deal
Tue, Jan 13 - Fri, Jan 23
United Airlines Logo
6:00 am - 10:55 pmONT-SGN
49h 55m2 stops
United Airlines Logo
7:00 am - 11:06 pmSGN-ONT
30h 06m2 stops
$723United Airlines
Find Deal
Sun, Feb 1 - Fri, May 1
United Airlines Logo
6:00 am - 10:55 pmONT-SGN
25h 55m2 stops
United Airlines Logo
7:00 am - 5:47 pmSGN-ONT
24h 47m2 stops
$731United Airlines
Find Deal
Mon, Jan 12 - Tue, Jun 2
Delta Logo
7:00 am - 1:40 pmONT-DAD
40h 40m2 stops
Delta Logo
10:55 pm - 11:44 pmDAD-ONT
38h 49m2 stops
$745Delta
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Sat, Apr 25 - Thu, May 7
Korean Air Logo
7:00 am - 9:05 pmONT-DAD
24h 05m2 stops
Korean Air Logo
10:55 pm - 10:40 pmDAD-ONT
37h 45m2 stops
$750Korean Air
Find Deal
Sun, Apr 26 - Thu, May 7

STARLUX Airlines flights from Ontario to Vietnam

Our best STARLUX Airlines deals on Ontario to Vietnam flight tickets
STARLUX Airlines
Feb 2
ONT9:45 pmOntario
28h 00m
1 stop
SGN4:45 pmHo Chi Minh City
Feb 27
SGN11:40 amHo Chi Minh City
19h 10m
1 stop
ONT3:50 pmOntario
$764
Find similar
STARLUX Airlines
Nov 29
ONT9:45 pmOntario
21h 45m
1 stop
SGN10:30 amHo Chi Minh City
Mar 20
SGN11:40 amHo Chi Minh City
19h 10m
1 stop
ONT4:50 pmOntario
$768
Find similar
STARLUX Airlines
Mar 30
ONT11:10 pmOntario
27h 45m
1 stop
SGN4:55 pmHo Chi Minh City
Apr 5
SGN6:25 pmHo Chi Minh City
36h 40m
1 stop
ONT5:05 pmOntario
$769
Find similar

United Airlines flights from Ontario to Vietnam

Our best United Airlines deals on Ontario to Vietnam flight tickets
United Airlines
Feb 1
ONT6:00 amOntario
49h 55m
2 stops
SGN10:55 pmHo Chi Minh City
May 1
SGN7:00 amHo Chi Minh City
30h 06m
2 stops
ONT11:06 pmOntario
$723
Find similar
United Airlines
Jan 12
ONT6:00 amOntario
25h 55m
2 stops
SGN10:55 pmHo Chi Minh City
Jun 2
SGN7:00 amHo Chi Minh City
24h 47m
2 stops
ONT5:47 pmOntario
$731
Find similar
United Airlines
Apr 1
ONT6:00 amOntario
25h 50m
2 stops
SGN9:50 pmHo Chi Minh City
May 28
SGN7:00 amHo Chi Minh City
43h 20m
2 stops
ONT12:20 pmOntario
$737
Find similar

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 November 26, 2025.
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

Mon 3/16

6:00 am-9:45 pm

2 stops25h 45m

Hanoi Noibai

Wed 3/18

11:05 pm-5:13 pm

2 stops32h 08m

$655

OntarioDa Nang

ONT - DAD

ONTDAD

Ontario

Sun 4/26

12:10 am-4:35 pm

1 stop26h 25m

Da Nang

Tue 5/26

5:35 pm-6:00 pm

1 stop38h 25m

$701

OntarioHanoi

ONT - HAN

ONTHAN

Ontario

Tue 1/13

10:50 pm-4:30 pm

1 stop26h 40m

Hanoi Noibai

Tue 1/20

11:35 am-4:50 pm

1 stop20h 15m

$706

OntarioHo Chi Minh City

ONT - SGN

ONTSGN

Ontario

Thu 3/12

11:50 pm-10:00 am

1 stop20h 10m

Ho Chi Minh City

Thu 3/19

11:00 am-5:50 pm

1 stop20h 50m

$712

OntarioDa Nang

ONT - DAD

ONTDAD

Ontario

Sun 3/29

12:10 am-4:35 pm

1 stop26h 25m

Da Nang

Mon 4/20

5:35 pm-6:00 pm

1 stop38h 25m

$714

OntarioHanoi

ONT - HAN

ONTHAN

Ontario

Tue 1/13

10:50 pm-10:35 am

1 stop20h 45m

Hanoi Noibai

Fri 1/23

11:35 am-4:50 pm

1 stop20h 15m

$715

OntarioHo Chi Minh City

ONT - SGN

ONTSGN

Ontario

Sun 2/1

6:00 am-10:55 pm

2 stops49h 55m

Ho Chi Minh City

Fri 5/1

7:00 am-11:06 pm

2 stops30h 06m

$723

OntarioHo Chi Minh City

ONT - SGN

ONTSGN

Ontario

Mon 1/12

6:00 am-10:55 pm

2 stops25h 55m

Ho Chi Minh City

Tue 6/2

7:00 am-5:47 pm

2 stops24h 47m

$731

OntarioDa Nang

ONT - DAD

ONTDAD

Ontario

Sat 4/25

7:00 am-1:40 pm

2 stops40h 40m

Da Nang

Thu 5/7

10:55 pm-11:44 pm

2 stops38h 49m

$745

OntarioDa Nang

ONT - DAD

ONTDAD

Ontario

Sun 4/26

7:00 am-9:05 pm

2 stops24h 05m

Da Nang

Thu 5/7

10:55 pm-10:40 pm

2 stops37h 45m

$750

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 $780. 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 $784.

What is the cheapest day to depart on your flight to Vietnam?

According to our data, Tuesday is the cheapest day to fly to Vietnam from Ontario. The lowest ticket price found for a Tuesday departure recently was $913. Keep in mind that prices can always vary depending on your route and whether or not you are flying domestic or international. Be sure to avoid booking your departure on a Friday as prices are generally higher than usual. According to our data, the average ticket price to Vietnam on Friday is $988.

What is the cheapest time of day to depart on your flight to Vietnam?

Flying to Vietnam from Ontario in the morning is the least expensive time of day to depart. momondo users have found prices as low as $914 when looking at flights departing in the morning. In the afternoon is when there is more demand to fly to Vietnam, so prices are often more expensive at around $1,167 per ticket.

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 $1,008 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 $827 on momondo.

Can stopping save me money on Ontario to Vietnam flights?

You could potentially save up to 9% 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
8.2
490 reviews
Search Asiana Airlines flights
Korean AirPriceFrom $710Free CancellationRating
8.4
1,172 reviews
Search Korean Air flights
China AirlinesPriceFrom $716Free CancellationRating
8.3
782 reviews
Search China Airlines flights
STARLUX AirlinesPriceFrom $756Free CancellationRating
8.9
235 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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