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Cheap flights from Ontario to Vietnam from $367

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 11/28. 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.
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
$698China Airlines
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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
$703China Airlines
Find Deal
Mon, Jan 26 - Thu, Feb 5
Delta Logo
1:20 pm - 9:45 pmONT-HAN
41h 25m2 stops
Delta Logo
11:05 pm - 6:18 pmHAN-ONT
34h 13m2 stops
$716Delta
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Wed, Nov 19 - Wed, Nov 26
United Airlines Logo
6:00 am - 12:15 amONT-SGN
27h 15m2 stops
United Airlines Logo
7:00 am - 11:06 pmSGN-ONT
30h 06m2 stops
$719United Airlines
Find Deal
Sun, Feb 1 - Fri, May 1
United Airlines Logo
6:00 am - 9:50 pmONT-SGN
24h 50m2 stops
United Airlines Logo
11:05 pm - 12:17 pmSGN-ONT
28h 12m2 stops
$720United Airlines
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Thu, Nov 27 - Tue, Dec 16
STARLUX Airlines Logo
9:45 pm - 4:45 pmONT-SGN
28h 00m1 stop
STARLUX Airlines Logo
11:40 am - 3:50 pmSGN-ONT
19h 10m1 stop
$774STARLUX Airlines
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Wed, Nov 19 - Wed, Dec 10
STARLUX Airlines Logo
9:45 pm - 10:30 amONT-SGN
21h 45m1 stop
STARLUX Airlines Logo
5:50 pm - 3:50 pmSGN-ONT
37h 00m1 stop
$781STARLUX Airlines
Find Deal
Fri, Nov 7 - Sun, Nov 9
Delta Logo
6:45 am - 10:25 pmONT-SGN
24h 40m2 stops
Delta Logo
11:50 pm - 10:47 pmSGN-ONT
37h 57m2 stops
$792Delta
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Mon, Nov 17 - Sun, Dec 7
Korean Air Logo
7:30 am - 11:10 amONT-HAN
36h 40m2 stops
Korean Air Logo
12:20 pm - 5:15 pmHAN-ONT
42h 55m2 stops
$866Korean Air
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Thu, Mar 5 - Mon, Mar 9
Korean Air Logo
6:45 am - 10:40 amONT-HAN
37h 55m2 stops
Korean Air Logo
11:10 pm - 5:15 pmHAN-ONT
32h 05m2 stops
$898Korean Air
Find Deal
Thu, Apr 2 - Sun, Apr 5

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
27h 15m
2 stops
SGN12:15 amHo Chi Minh City
May 1
SGN7:00 amHo Chi Minh City
30h 06m
2 stops
ONT11:06 pmOntario
$719
Find similar
United Airlines
Nov 27
ONT6:00 amOntario
24h 50m
2 stops
SGN9:50 pmHo Chi Minh City
Dec 16
SGN11:05 pmHo Chi Minh City
28h 12m
2 stops
ONT12:17 pmOntario
$720
Find similar
United Airlines
Nov 25
ONT6:00 amOntario
27h 15m
2 stops
SGN12:15 amHo Chi Minh City
Dec 9
SGN11:05 pmHo Chi Minh City
28h 12m
2 stops
ONT12:17 pmOntario
$723
Find similar

STARLUX Airlines flights from Ontario to Vietnam

Our best STARLUX Airlines deals on Ontario to Vietnam flight tickets
STARLUX Airlines
Nov 19
ONT9:45 pmOntario
28h 00m
1 stop
SGN4:45 pmHo Chi Minh City
Dec 10
SGN11:40 amHo Chi Minh City
19h 10m
1 stop
ONT3:50 pmOntario
$774
Find similar
STARLUX Airlines
Nov 7
ONT9:45 pmOntario
21h 45m
1 stop
SGN10:30 amHo Chi Minh City
Nov 9
SGN5:50 pmHo Chi Minh City
37h 00m
1 stop
ONT3:50 pmOntario
$781
Find similar
STARLUX Airlines
Nov 7
ONT9:45 pmOntario
21h 45m
1 stop
SGN10:30 amHo Chi Minh City
Nov 9
SGN5:50 pmHo Chi Minh City
37h 00m
1 stop
ONT3:50 pmOntario
$784
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 4, 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

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

$698

OntarioHanoi

ONT - HAN

ONTHAN

Ontario

Mon 1/26

10:50 pm-4:30 pm

1 stop26h 40m

Hanoi Noibai

Thu 2/5

11:35 am-4:50 pm

1 stop20h 15m

$703

OntarioHanoi

ONT - HAN

ONTHAN

Ontario

Wed 11/19

1:20 pm-9:45 pm

2 stops41h 25m

Hanoi Noibai

Wed 11/26

11:05 pm-6:18 pm

2 stops34h 13m

$716

OntarioHo Chi Minh City

ONT - SGN

ONTSGN

Ontario

Sun 2/1

6:00 am-12:15 am

2 stops27h 15m

Ho Chi Minh City

Fri 5/1

7:00 am-11:06 pm

2 stops30h 06m

$719

OntarioHo Chi Minh City

ONT - SGN

ONTSGN

Ontario

Thu 11/27

6:00 am-9:50 pm

2 stops24h 50m

Ho Chi Minh City

Tue 12/16

11:05 pm-12:17 pm

2 stops28h 12m

$720

OntarioHo Chi Minh City

ONT - SGN

ONTSGN

Ontario

Wed 11/19

9:45 pm-4:45 pm

1 stop28h 00m

Ho Chi Minh City

Wed 12/10

11:40 am-3:50 pm

1 stop19h 10m

$774

OntarioHo Chi Minh City

ONT - SGN

ONTSGN

Ontario

Fri 11/7

9:45 pm-10:30 am

1 stop21h 45m

Ho Chi Minh City

Sun 11/9

5:50 pm-3:50 pm

1 stop37h 00m

$781

OntarioHo Chi Minh City

ONT - SGN

ONTSGN

Ontario

Mon 11/17

6:45 am-10:25 pm

2 stops24h 40m

Ho Chi Minh City

Sun 12/7

11:50 pm-10:47 pm

2 stops37h 57m

$792

OntarioHanoi

ONT - HAN

ONTHAN

Ontario

Thu 3/5

7:30 am-11:10 am

2 stops36h 40m

Hanoi Noibai

Mon 3/9

12:20 pm-5:15 pm

2 stops42h 55m

$866

OntarioHanoi

ONT - HAN

ONTHAN

Ontario

Thu 4/2

6:45 am-10:40 am

2 stops37h 55m

Hanoi Noibai

Sun 4/5

11:10 pm-5:15 pm

2 stops32h 05m

$898

Flights are sorted by cheapest round-trip flights 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 October is, on average, the cheapest month to fly to Vietnam from Ontario, with most prices found around $784. If you don’t want to visit Vietnam in October, then you should wait until November to fly from Ontario, when ticket prices are also cheap, with an average price of $785.

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 $1,006 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 $845 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
484 reviews
Search Asiana Airlines flights
Korean AirPriceFrom $714Free CancellationRating
8.4
1,160 reviews
Search Korean Air flights
China AirlinesPriceFrom $727Free CancellationRating
8.3
776 reviews
Search China Airlines flights
STARLUX AirlinesPriceFrom $757Free CancellationRating
8.9
219 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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