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Cheap flights from Ontario to Vietnam from $345

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 10/25. 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

Delta Logo
6:45 am - 9:45 pmONT-HAN
24h 00m2 stops
Delta Logo
12:20 pm - 10:47 pmHAN-ONT
25h 27m2 stops
$710Delta
Find Deal
Wed, Nov 12 - Thu, Dec 4
Korean Air Logo
6:00 am - 9:35 pmONT-HAN
25h 35m2 stops
Korean Air Logo
11:10 pm - 5:10 pmHAN-ONT
32h 00m2 stops
$716Korean Air
Find Deal
Sun, Oct 5 - Wed, Oct 15
United Airlines Logo
6:00 am - 11:05 pmONT-HAN
26h 05m2 stops
United Airlines Logo
12:25 am - 5:43 pmHAN-ONT
32h 18m2 stops
$732United Airlines
Find Deal
Fri, Jan 23 - Sun, Feb 1
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
$738China Airlines
Find Deal
Thu, Feb 19 - Thu, Mar 19
United Airlines Logo
6:00 am - 11:05 pmONT-HAN
26h 05m2 stops
United Airlines Logo
12:25 am - 10:53 pmHAN-ONT
37h 28m2 stops
$738United Airlines
Find Deal
Fri, Jan 23 - Sat, Jan 31
China Airlines Logo
11:50 pm - 10:00 amONT-SGN
20h 10m1 stop
China Airlines Logo
11:00 am - 4:50 pmSGN-ONT
20h 50m1 stop
$745China Airlines
Find Deal
Sat, Oct 25 - Sat, Nov 15
Multiple Airlines Logo
10:50 pm - 4:50 pmONT-SGN
27h 00m1 stop
Multiple Airlines Logo
11:20 am - 4:50 pmSGN-ONT
20h 30m1 stop
$758Multiple Airlines
Find Deal
Tue, Feb 3 - Tue, Mar 3
STARLUX Airlines Logo
11:10 pm - 10:15 amONT-SGN
21h 05m1 stop
STARLUX Airlines Logo
5:50 pm - 4:30 pmSGN-ONT
37h 40m1 stop
$783STARLUX Airlines
Find Deal
Sat, Oct 18 - Sun, Nov 16
STARLUX Airlines Logo
11:10 pm - 10:15 amONT-SGN
21h 05m1 stop
STARLUX Airlines Logo
5:50 pm - 4:30 pmSGN-ONT
37h 40m1 stop
$785STARLUX Airlines
Find Deal
Mon, Oct 6 - Thu, Nov 6
Multiple Airlines Logo
10:50 pm - 4:50 pmONT-SGN
27h 00m1 stop
Multiple Airlines Logo
5:50 pm - 10:53 amSGN-ONT
31h 03m2 stops
$821Multiple Airlines
Find Deal
Mon, Feb 9 - Tue, Mar 24

STARLUX Airlines flights from Ontario to Vietnam

Our best STARLUX Airlines deals on Ontario to Vietnam flight tickets
STARLUX Airlines
Oct 18
ONT11:10 pmOntario
21h 05m
1 stop
SGN10:15 amHo Chi Minh City
Nov 16
SGN5:50 pmHo Chi Minh City
37h 40m
1 stop
ONT4:30 pmOntario
$783
Find similar
STARLUX Airlines
Oct 6
ONT11:10 pmOntario
21h 05m
1 stop
SGN10:15 amHo Chi Minh City
Nov 6
SGN5:50 pmHo Chi Minh City
37h 40m
1 stop
ONT4:30 pmOntario
$785
Find similar
STARLUX Airlines
Sep 20
ONT11:10 pmOntario
21h 05m
1 stop
SGN10:15 amHo Chi Minh City
Oct 3
SGN11:30 amHo Chi Minh City
19h 35m
1 stop
ONT5:05 pmOntario
$801
Find similar

Delta flights from Ontario to Vietnam

Our best Delta deals on Ontario to Vietnam flight tickets
Delta
Nov 12
ONT6:45 amOntario
24h 00m
2 stops
HAN9:45 pmHanoi Noibai
Dec 4
HAN12:20 pmHanoi Noibai
25h 27m
2 stops
ONT10:47 pmOntario
$710
Find similar
Delta
Sep 21
ONT6:00 amOntario
25h 35m
2 stops
HAN9:35 pmHanoi Noibai
Oct 1
HAN11:10 pmHanoi Noibai
38h 32m
2 stops
ONT11:42 pmOntario
$716
Find similar
Delta
Oct 4
ONT9:50 amOntario
45h 45m
2 stops
HAN9:35 pmHanoi Noibai
Oct 13
HAN11:10 pmHanoi Noibai
49h 58m
2 stops
ONT11:08 amOntario
$728
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 September 17, 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

Wed 11/12

6:45 am-9:45 pm

2 stops24h 00m

Hanoi Noibai

Thu 12/4

12:20 pm-10:47 pm

2 stops25h 27m

$710

OntarioHanoi

ONT - HAN

ONTHAN

Ontario

Sun 10/5

6:00 am-9:35 pm

2 stops25h 35m

Hanoi Noibai

Wed 10/15

11:10 pm-5:10 pm

2 stops32h 00m

$716

OntarioHanoi

ONT - HAN

ONTHAN

Ontario

Fri 1/23

6:00 am-11:05 pm

2 stops26h 05m

Hanoi Noibai

Sun 2/1

12:25 am-5:43 pm

2 stops32h 18m

$732

OntarioHo Chi Minh City

ONT - SGN

ONTSGN

Ontario

Thu 2/19

10:50 pm-4:50 pm

1 stop27h 00m

Ho Chi Minh City

Thu 3/19

11:00 am-5:50 pm

1 stop20h 50m

$738

OntarioHanoi

ONT - HAN

ONTHAN

Ontario

Fri 1/23

6:00 am-11:05 pm

2 stops26h 05m

Hanoi Noibai

Sat 1/31

12:25 am-10:53 pm

2 stops37h 28m

$738

OntarioHo Chi Minh City

ONT - SGN

ONTSGN

Ontario

Sat 10/25

11:50 pm-10:00 am

1 stop20h 10m

Ho Chi Minh City

Sat 11/15

11:00 am-4:50 pm

1 stop20h 50m

$745

OntarioHo Chi Minh City

ONT - SGN

ONTSGN

Ontario

Tue 2/3

10:50 pm-4:50 pm

1 stop27h 00m

Ho Chi Minh City

Tue 3/3

11:20 am-4:50 pm

1 stop20h 30m

$758

OntarioHo Chi Minh City

ONT - SGN

ONTSGN

Ontario

Sat 10/18

11:10 pm-10:15 am

1 stop21h 05m

Ho Chi Minh City

Sun 11/16

5:50 pm-4:30 pm

1 stop37h 40m

$783

OntarioHo Chi Minh City

ONT - SGN

ONTSGN

Ontario

Mon 10/6

11:10 pm-10:15 am

1 stop21h 05m

Ho Chi Minh City

Thu 11/6

5:50 pm-4:30 pm

1 stop37h 40m

$785

OntarioHo Chi Minh City

ONT - SGN

ONTSGN

Ontario

Mon 2/9

10:50 pm-4:50 pm

1 stop27h 00m

Ho Chi Minh City

Tue 3/24

5:50 pm-10:53 am

2 stops31h 03m

$821

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 September is, on average, the cheapest month to fly to Vietnam from Ontario, with most prices found around $809. If you don’t want to visit Vietnam in September, then you should wait until October to fly from Ontario, when ticket prices are also cheap, with an average price of $812.

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 $1,020 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 $855 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

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
United AirlinesPriceFrom $620Free CancellationRating
7.4
8,926 reviews
Search United Airlines flights
Asiana AirlinesPriceFrom $640Free CancellationRating
8.2
481 reviews
Search Asiana Airlines flights
Korean AirPriceFrom $714Free CancellationRating
8.4
1,140 reviews
Search Korean Air flights
China AirlinesPriceFrom $759Free CancellationRating
8.3
768 reviews
Search China Airlines flights
STARLUX AirlinesPriceFrom $767Free CancellationRating
8.9
215 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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Find better results for your trip to Vietnam

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