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Cheap flights from Ontario to Vietnam from $358

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 9/11. 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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0 bags

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Find the cheapest flights from Ontario to Vietnam

Cheap round-trip flights

Delta Logo
6:05 am - 9:35 pmONT-HAN
25h 30m2 stops
Delta Logo
12:00 pm - 11:42 pmHAN-ONT
25h 42m2 stops
$710Delta
Find Deal
Tue, Sep 9 - Thu, Sep 25
China Airlines Logo
12:10 am - 9:40 amONT-SGN
19h 30m1 stop
China Airlines Logo
10:50 am - 6:00 pmSGN-ONT
21h 10m1 stop
$742China Airlines
Find Deal
Sun, Oct 5 - Sun, Oct 19
Korean Air Logo
7:35 am - 10:25 pmONT-SGN
24h 50m2 stops
Korean Air Logo
8:00 am - 5:15 pmSGN-ONT
23h 15m2 stops
$757Korean Air
Find Deal
Sat, Nov 1 - Tue, Mar 24
Logo
7:35 am - 10:25 pmONT-SGN
23h 50m2 stops
Logo
11:50 pm - 5:17 pmSGN-ONT
32h 27m2 stops
$760
Find Deal
Sun, Nov 2 - Sun, Dec 7
Korean Air Logo
7:35 am - 12:50 pmONT-SGN
38h 15m2 stops
Korean Air Logo
2:05 pm - 5:15 pmSGN-ONT
41h 10m2 stops
$761Korean Air
Find Deal
Mon, Nov 3 - Tue, Mar 24
STARLUX Airlines Logo
11:10 pm - 10:15 amONT-SGN
21h 05m1 stop
STARLUX Airlines Logo
6:25 pm - 5:05 pmSGN-ONT
36h 40m1 stop
$783STARLUX Airlines
Find Deal
Mon, Sep 29 - Thu, Oct 16
STARLUX Airlines Logo
11:10 pm - 10:15 amONT-SGN
21h 05m1 stop
STARLUX Airlines Logo
11:40 am - 4:50 pmSGN-ONT
19h 10m1 stop
$785STARLUX Airlines
Find Deal
Fri, Oct 3 - Fri, Oct 31
United Airlines Logo
1:53 pm - 11:05 pmONT-HAN
42h 12m2 stops
United Airlines Logo
12:25 am - 5:43 pmHAN-ONT
32h 18m2 stops
$808United Airlines
Find Deal
Tue, Jan 13 - Mon, Jan 19
United Airlines Logo
6:00 am - 12:15 amONT-SGN
28h 15m2 stops
United Airlines Logo
7:00 am - 5:29 pmSGN-ONT
24h 29m2 stops
$809United Airlines
Find Deal
Mon, Sep 8 - Mon, Sep 22
Logo
7:47 pm - 9:40 amONT-SGN
23h 53m2 stops
Logo
11:20 am - 6:00 pmSGN-ONT
20h 40m1 stop
$817
Find Deal
Mon, Sep 8 - Mon, Sep 22

STARLUX Airlines flights from Ontario to Vietnam

Our best STARLUX Airlines deals on Ontario to Vietnam flight tickets
STARLUX Airlines
Sep 29
ONT11:10 pmOntario
21h 05m
1 stop
SGN10:15 amHo Chi Minh City
Oct 16
SGN6:25 pmHo Chi Minh City
36h 40m
1 stop
ONT5:05 pmOntario
$783
Find similar
STARLUX Airlines
Oct 3
ONT11:10 pmOntario
21h 05m
1 stop
SGN10:15 amHo Chi Minh City
Oct 31
SGN11:40 amHo Chi Minh City
19h 10m
1 stop
ONT4:50 pmOntario
$785
Find similar
STARLUX Airlines
Oct 11
ONT11:10 pmOntario
21h 05m
1 stop
SGN10:15 amHo Chi Minh City
Oct 17
SGN6:25 pmHo Chi Minh City
36h 40m
1 stop
ONT5:05 pmOntario
$787
Find similar

China Airlines flights from Ontario to Vietnam

Our best China Airlines deals on Ontario to Vietnam flight tickets
China Airlines
Oct 5
ONT12:10 amOntario
19h 30m
1 stop
SGN9:40 amHo Chi Minh City
Oct 19
SGN10:50 amHo Chi Minh City
21h 10m
1 stop
ONT6:00 pmOntario
$742
Find similar
China Airlines
Nov 7
ONT10:50 pmOntario
20h 10m
1 stop
SGN10:00 amHo Chi Minh City
Nov 30
SGN5:50 pmHo Chi Minh City
38h 00m
1 stop
ONT4:50 pmOntario
$748
Find similar
China Airlines
Nov 17
ONT10:50 pmOntario
20h 10m
1 stop
SGN10:00 amHo Chi Minh City
Nov 30
SGN5:50 pmHo Chi Minh City
38h 00m
1 stop
ONT4:50 pmOntario
$749
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 August 28, 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

Tue 9/9

6:05 am-9:35 pm

2 stops25h 30m

Hanoi Noibai

Thu 9/25

12:00 pm-11:42 pm

2 stops25h 42m

$710

OntarioHo Chi Minh City

ONT - SGN

ONTSGN

Ontario

Sun 10/5

12:10 am-9:40 am

1 stop19h 30m

Ho Chi Minh City

Sun 10/19

10:50 am-6:00 pm

1 stop21h 10m

$742

OntarioHo Chi Minh City

ONT - SGN

ONTSGN

Ontario

Sat 11/1

7:35 am-10:25 pm

2 stops24h 50m

Ho Chi Minh City

Tue 3/24

8:00 am-5:15 pm

2 stops23h 15m

$757

OntarioHo Chi Minh City

ONT - SGN

ONTSGN

Ontario

Sun 11/2

7:35 am-10:25 pm

2 stops23h 50m

Ho Chi Minh City

Sun 12/7

11:50 pm-5:17 pm

2 stops32h 27m

$760

OntarioHo Chi Minh City

ONT - SGN

ONTSGN

Ontario

Mon 11/3

7:35 am-12:50 pm

2 stops38h 15m

Ho Chi Minh City

Tue 3/24

2:05 pm-5:15 pm

2 stops41h 10m

$761

OntarioHo Chi Minh City

ONT - SGN

ONTSGN

Ontario

Mon 9/29

11:10 pm-10:15 am

1 stop21h 05m

Ho Chi Minh City

Thu 10/16

6:25 pm-5:05 pm

1 stop36h 40m

$783

OntarioHo Chi Minh City

ONT - SGN

ONTSGN

Ontario

Fri 10/3

11:10 pm-10:15 am

1 stop21h 05m

Ho Chi Minh City

Fri 10/31

11:40 am-4:50 pm

1 stop19h 10m

$785

OntarioHanoi

ONT - HAN

ONTHAN

Ontario

Tue 1/13

1:53 pm-11:05 pm

2 stops42h 12m

Hanoi Noibai

Mon 1/19

12:25 am-5:43 pm

2 stops32h 18m

$808

OntarioHo Chi Minh City

ONT - SGN

ONTSGN

Ontario

Mon 9/8

6:00 am-12:15 am

2 stops28h 15m

Ho Chi Minh City

Mon 9/22

7:00 am-5:29 pm

2 stops24h 29m

$809

OntarioHo Chi Minh City

ONT - SGN

ONTSGN

Ontario

Mon 9/8

7:47 pm-9:40 am

2 stops23h 53m

Ho Chi Minh City

Mon 9/22

11:20 am-6:00 pm

1 stop20h 40m

$817

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 $816. 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 $819.

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 $1,014 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 $828 on momondo.

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
8,944 reviews
Search United Airlines flights
Asiana AirlinesPriceFrom $640Free CancellationRating
8.2
477 reviews
Search Asiana Airlines flights
Korean AirPriceFrom $721Free CancellationRating
8.4
1,133 reviews
Search Korean Air flights
STARLUX AirlinesPriceFrom $767Free CancellationRating
8.9
211 reviews
Search STARLUX Airlines flights
China AirlinesPriceFrom $769Free CancellationRating
8.3
765 reviews
Search China 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.
Start using Trips
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