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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.
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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 - 10:35 amONT-HAN
20h 45m1 stop
China Airlines Logo
11:35 am - 4:50 pmHAN-ONT
20h 15m1 stop
$706China Airlines
Find Deal
Tue, Jan 13 - Thu, Jan 29
China Airlines Logo
10:50 pm - 4:50 pmONT-SGN
27h 00m1 stop
China Airlines Logo
11:00 am - 5:50 pmSGN-ONT
20h 50m1 stop
$712China Airlines
Find Deal
Mon, Feb 16 - Thu, Mar 12
Korean Air Logo
6:00 am - 11:20 pmONT-SGN
27h 20m2 stops
Korean Air Logo
7:35 am - 10:34 pmSGN-ONT
28h 59m2 stops
$713Korean Air
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Thu, Mar 19 - Fri, Apr 10
United Airlines Logo
6:00 am - 10:55 pmONT-SGN
25h 55m2 stops
United Airlines Logo
7:00 am - 11:06 pmSGN-ONT
30h 06m2 stops
$723United Airlines
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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
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Tue, Feb 24 - Mon, Apr 27
STARLUX Airlines Logo
9:45 pm - 5:15 pmONT-DAD
28h 30m1 stop
STARLUX Airlines Logo
6:25 pm - 3:50 pmDAD-ONT
36h 25m1 stop
$784STARLUX Airlines
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Wed, Feb 4 - Thu, Mar 5
STARLUX Airlines Logo
9:45 pm - 5:15 pmONT-DAD
28h 30m1 stop
STARLUX Airlines Logo
6:45 pm - 5:05 pmDAD-ONT
36h 20m1 stop
$797STARLUX Airlines
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Sat, Feb 28 - Tue, Mar 31
Delta Logo
3:30 pm - 2:15 pmONT-DAD
55h 45m2 stops
Delta Logo
11:20 pm - 10:37 pmDAD-ONT
38h 17m2 stops
$855Delta
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Mon, Feb 2 - Sun, Feb 15

China Airlines flights from Ontario to Vietnam

Our best China Airlines deals on Ontario to Vietnam flight tickets
China Airlines
Apr 26
ONT12:10 amOntario
26h 25m
1 stop
DAD4:35 pmDa Nang
May 26
DAD5:35 pmDa Nang
38h 25m
1 stop
ONT6:00 pmOntario
$701
Find similar
China Airlines
Nov 29
ONT10:50 pmOntario
20h 45m
1 stop
HAN10:35 amHanoi Noibai
Dec 11
HAN11:35 amHanoi Noibai
20h 15m
1 stop
ONT4:50 pmOntario
$704
Find similar
China Airlines
Jan 13
ONT10:50 pmOntario
20h 45m
1 stop
HAN10:35 amHanoi Noibai
Jan 29
HAN11:35 amHanoi Noibai
20h 15m
1 stop
ONT4:50 pmOntario
$706
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
Feb 24
ONT6:00 amOntario
25h 55m
2 stops
SGN10:55 pmHo Chi Minh City
Apr 27
SGN7:00 amHo Chi Minh City
24h 47m
2 stops
ONT5:47 pmOntario
$731
Find similar
United Airlines
Apr 19
ONT6:00 amOntario
28h 15m
2 stops
SGN12:15 amHo Chi Minh City
Apr 30
SGN11:15 pmHo Chi Minh City
37h 51m
2 stops
ONT11:06 pmOntario
$733
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 24, 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-10:35 am

1 stop20h 45m

Hanoi Noibai

Thu 1/29

11:35 am-4:50 pm

1 stop20h 15m

$706

OntarioHo Chi Minh City

ONT - SGN

ONTSGN

Ontario

Mon 2/16

10:50 pm-4:50 pm

1 stop27h 00m

Ho Chi Minh City

Thu 3/12

11:00 am-5:50 pm

1 stop20h 50m

$712

OntarioHo Chi Minh City

ONT - SGN

ONTSGN

Ontario

Thu 3/19

6:00 am-11:20 pm

2 stops27h 20m

Ho Chi Minh City

Fri 4/10

7:35 am-10:34 pm

2 stops28h 59m

$713

OntarioHo Chi Minh City

ONT - SGN

ONTSGN

Ontario

Sun 2/1

6:00 am-10:55 pm

2 stops25h 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

Tue 2/24

6:00 am-10:55 pm

2 stops25h 55m

Ho Chi Minh City

Mon 4/27

7:00 am-5:47 pm

2 stops24h 47m

$731

OntarioDa Nang

ONT - DAD

ONTDAD

Ontario

Wed 2/4

9:45 pm-5:15 pm

1 stop28h 30m

Da Nang

Thu 3/5

6:25 pm-3:50 pm

1 stop36h 25m

$784

OntarioDa Nang

ONT - DAD

ONTDAD

Ontario

Sat 2/28

9:45 pm-5:15 pm

1 stop28h 30m

Da Nang

Tue 3/31

6:45 pm-5:05 pm

1 stop36h 20m

$797

OntarioDa Nang

ONT - DAD

ONTDAD

Ontario

Mon 2/2

3:30 pm-2:15 pm

2 stops55h 45m

Da Nang

Sun 2/15

11:20 pm-10:37 pm

2 stops38h 17m

$855

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 7% 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

Direct flights

None
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
488 reviews
Search Asiana Airlines flights
Korean AirPriceFrom $714Free CancellationRating
8.4
1,170 reviews
Search Korean Air flights
China AirlinesPriceFrom $727Free CancellationRating
8.3
782 reviews
Search China Airlines flights
STARLUX AirlinesPriceFrom $757Free 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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