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$353+ Cheap flights from Ontario (ONT) to Vietnam

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 3/23. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — SGN
apr. 8 — apr. 151
on. 4/8
on. 4/15
1 adult, Economy
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Cheap flight deals from Ontario to Vietnam

Cheapest flights from Ontario to Vietnam
Explore the most affordable flight options available from Ontario to Vietnam. Find the lowest fares from popular airlines and budget airlines, with prices last updated on mars 9, 2026.

This Delta deal was found by Cheapflights users on 3/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
ma. 8/177:00 am
ONT
-
HAN
2 stops24h 35m
Delta
ma. 9/2111:10 pm
HAN
-
ONT
2 stops37h 30m
Delta
Deal found 3/7$691
This Korean Air deal was found by Cheapflights users on 3/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Korean Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
ti. 9/87:00 am
ONT
-
HAN
2 stops24h 35m
Korean Air
ti. 9/2211:10 pm
HAN
-
ONT
2 stops32h 06m
Korean Air
Deal found 3/4$696
This Delta deal was found by Cheapflights users on 3/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
on. 9/235:05 pm
ONT
-
HAN
2 stops51h 30m
Delta
ti. 9/2911:10 pm
HAN
-
ONT
2 stops37h 30m
Delta
Deal found 3/7$697
This oojo deal was found by Cheapflights users on 3/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
ma. 8/3112:45 am
ONT
-
SGN
1 stop18h 55m
China Airlines
ti. 9/225:30 pm
SGN
-
ONT
1 stop38h 30m
China Airlines
Deal found 3/4$703
This oojo deal was found by Cheapflights users on 3/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lø. 8/1512:45 am
ONT
-
SGN
1 stop18h 55m
China Airlines
sø. 9/275:30 pm
SGN
-
ONT
1 stop38h 30m
China Airlines
Deal found 3/4$704
This oojo deal was found by Cheapflights users on 3/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lø. 4/1812:10 am
ONT
-
SGN
1 stop19h 30m
China Airlines
lø. 5/1610:50 am
SGN
-
ONT
1 stop21h 10m
China Airlines
Deal found 3/8$706
This Korean Air deal was found by Cheapflights users on 3/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Korean Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sø. 4/126:00 am
ONT
-
SGN
2 stops26h 10m
Korean Air
lø. 5/911:45 pm
SGN
-
ONT
2 stops31h 25m
Korean Air
Deal found 3/5$711
This Delta deal was found by Cheapflights users on 3/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lø. 4/185:59 pm
ONT
-
SGN
2 stops38h 11m
Delta
lø. 5/1611:45 pm
SGN
-
ONT
2 stops31h 25m
Delta
Deal found 3/6$712
This ScholarTrip deal was found by Cheapflights users on 3/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure ScholarTrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sø. 4/197:00 am
ONT
-
HAN
2 stops24h 35m
Korean Air
sø. 4/2611:10 pm
HAN
-
ONT
2 stops32h 05m
Korean Air
Deal found 3/5$713
This oojo deal was found by Cheapflights users on 3/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sø. 4/2612:10 am
ONT
-
SGN
1 stop19h 30m
China Airlines
on. 5/2710:50 am
SGN
-
ONT
1 stop21h 10m
China Airlines
Deal found 3/5$715
This oojo deal was found by Cheapflights users on 3/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lø. 5/212:10 am
ONT
-
DAD
1 stop26h 20m
China Airlines
sø. 5/245:30 pm
DAD
-
ONT
1 stop38h 30m
China Airlines
Deal found 3/7$718
This oojo deal was found by Cheapflights users on 3/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
to. 5/712:10 am
ONT
-
DAD
1 stop18h 50m
China Airlines
ma. 5/185:30 pm
DAD
-
ONT
1 stop38h 30m
China Airlines
Deal found 3/6$719

Find flight deals from Ontario to Vietnam

Keep the following information in mind while searching for Ontario to Vietnam flight deals. Data was last updated mars 9, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$691
(Delta)

One-way from

$353
(EaseMyTrip)

Popular in

December

Cheapest in

November

Average price

$766
Provider with most accurate pricing for Ontario-Ho Chi Minh City flight deals.
Search Deals
Provider most trusted by Cheapflights users for Ontario-Ho Chi Minh City flights.
Search Deals
From Ontario to Vietnam
Search Deals
One-way flight from Ontario to Vietnam
Search Deals
Highest demand for flights based on searches. 8% potential increase in price ($85 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 6% potential price decrease ($57 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in March 2026
Search Deals

Cheapflights 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, Cheapflights users made 2,558,603 searches. Data last updated mars 9, 2026.
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

Cheapest round-trip

OntarioHo Chi Minh City

ONT - SGN

ONTSGN

Ontario

on. 3/18

6:00 am-11:20 pm

2 stops27h 20m

Ho Chi Minh City

ma. 4/27

7:30 am-5:15 pm

2 stops23h 45m

$751

OntarioHo Chi Minh City

ONT - SGN

ONTSGN

Ontario

ti. 4/21

6:00 am-10:05 pm

2 stops26h 05m

Ho Chi Minh City

ti. 5/19

7:00 am-5:52 pm

2 stops24h 52m

$772

OntarioHanoi

ONT - HAN

ONTHAN

Ontario

sø. 5/3

7:00 am-9:35 pm

2 stops24h 35m

Hanoi Noibai

to. 5/7

11:10 pm-5:10 pm

2 stops32h 00m

$776

OntarioHo Chi Minh City

ONT - SGN

ONTSGN

Ontario

ma. 4/6

6:00 am-10:05 pm

2 stops26h 05m

Ho Chi Minh City

ti. 5/12

7:00 am-5:52 pm

2 stops24h 52m

$788

OntarioDa Nang

ONT - DAD

ONTDAD

Ontario

on. 5/6

7:00 am-9:05 pm

2 stops24h 05m

Da Nang

ma. 5/18

3:55 pm-5:10 pm

2 stops39h 15m

$791

OntarioHanoi

ONT - HAN

ONTHAN

Ontario

ma. 4/27

11:10 pm-4:50 pm

1 stop27h 40m

Hanoi Noibai

fr. 5/8

11:10 am-5:05 pm

1 stop19h 55m

$799

OntarioHo Chi Minh City

ONT - SGN

ONTSGN

Ontario

fr. 4/10

6:00 am-11:15 pm

2 stops27h 15m

Ho Chi Minh City

fr. 4/24

1:55 pm-5:15 pm

2 stops41h 20m

$811

OntarioHanoi

ONT - HAN

ONTHAN

Ontario

fr. 4/24

11:10 pm-10:10 am

1 stop21h 00m

Hanoi Noibai

fr. 5/1

11:10 am-5:05 pm

1 stop19h 55m

$844

OntarioDa Nang

ONT - DAD

ONTDAD

Ontario

sø. 5/3

12:10 am-4:30 pm

1 stop26h 20m

Da Nang

lø. 5/16

10:00 am-6:00 pm

1 stop22h 00m

$845

OntarioHo Chi Minh City

ONT - SGN

ONTSGN

Ontario

ma. 5/11

6:45 am-11:15 pm

2 stops26h 30m

Ho Chi Minh City

ti. 6/9

11:45 pm-5:16 pm

2 stops31h 31m

$846

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/8

Showing 1-10 of 60 resultsSorted by cheapest first
1
2
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6

Best time to book a flight from Ontario to Vietnam

Have a flexible travel schedule? Discover the best time to fly to Vietnam from Ontario with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Ontario to Vietnam

What is the cheapest month to book a flight from Ontario to Vietnam?

Currently, April is the cheapest month in which you can book a flight from Ontario to Vietnam (average of $304). Flying from Ontario to Vietnam in July is currently the most expensive (average of $707). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

Reviews of airlines servicing Vietnam

Get insights into the airlines that provide service to Vietnam. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Vietnam. Reviews last updated mars 9, 2026.
See what other customers who have flown with STARLUX Airlines,Korean Air, andChina Airlines from Ontario to Vietnam have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
STARLUX Airlines
8.9
Very good
279 reviews

Comfort

8.9

Food

8.7

Boarding

8.9

Overall

8.9

Crew

9.2

Entertainment

8.8

Reviews

1 / 10
10.0
Excellent

Anonymous,Jan 2026

SEA - TPE

First time travelled with starlux and had best experience. Food was really good and crew is the best. Entertainment was also best. Having latest movies. I requested for isle seat at the last time and they provided me. Best airline service.
STARLUX Airlines
8.9
Very good
279 reviews
STARLUX Airlines
8.9
Very good
279 reviews

Comfort

8.9

Food

8.7

Boarding

8.9

Overall

8.9

Crew

9.2

Entertainment

8.8

Reviews

1 / 10
10.0
Excellent

Anonymous,Jan 2026

SEA - TPE

First time travelled with starlux and had best experience. Food was really good and crew is the best. Entertainment was also best. Having latest movies. I requested for isle seat at the last time and they provided me. Best airline service.
Korean Air
8.4
Very good
1,202 reviews
STARLUX Airlines
8.9
Very good
279 reviews

Comfort

8.9

Food

8.7

Boarding

8.9

Overall

8.9

Crew

9.2

Entertainment

8.8

Reviews

1 / 10
10.0
Excellent

Anonymous,Jan 2026

SEA - TPE

First time travelled with starlux and had best experience. Food was really good and crew is the best. Entertainment was also best. Having latest movies. I requested for isle seat at the last time and they provided me. Best airline service.
China Airlines
8.3
Very good
811 reviews
STARLUX Airlines
8.9
Very good
279 reviews

Comfort

8.9

Food

8.7

Boarding

8.9

Overall

8.9

Crew

9.2

Entertainment

8.8

Reviews

1 / 10
10.0
Excellent

Anonymous,Jan 2026

SEA - TPE

First time travelled with starlux and had best experience. Food was really good and crew is the best. Entertainment was also best. Having latest movies. I requested for isle seat at the last time and they provided me. Best airline service.
Asiana Airlines
8.1
Very good
504 reviews
STARLUX Airlines
8.9
Very good
279 reviews

Comfort

8.9

Food

8.7

Boarding

8.9

Overall

8.9

Crew

9.2

Entertainment

8.8

Reviews

1 / 10
10.0
Excellent

Anonymous,Jan 2026

SEA - TPE

First time travelled with starlux and had best experience. Food was really good and crew is the best. Entertainment was also best. Having latest movies. I requested for isle seat at the last time and they provided me. Best airline service.

Related info for your journey

Find useful and relevant information for your journey from Ontario to Vietnam. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly from for flights from Ontario to Vietnam?

    Ontario (ONT) is the airport you will fly out of if you book a flight from Ontario to Vietnam. It is only a 3.1 mi journey to Ontario (ONT) from Ontario’s city center.

  • How long is the flight from Ontario to Vietnam?

    For as low as $772, Korean Air can have you in Vietnam from Ontario in 26h 05m. There are 8184 mi between Ontario and Vietnam. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

  • What are the cheapest airlines to fly from Ontario to Vietnam one-way?

    $341 is the cheapest one-way deal found within the past few days, from Korean Air. You may also be able to find cheap deals on China Airlines and STARLUX Airlines, with prices starting from $393 and $424, respectively.

  • What are the most popular routes from Ontario to Vietnam?

    The most popular route from Ontario to Vietnam is Ontario - Ho Chi Minh City. You may also consider Ontario - Hanoi Noibai or Ontario - Da Nang.

  • Can I find deals for flights from Ontario to Vietnam that include hotel bookings?

    Yes. In addition to deals on Ontario to Vietnam flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Ontario to Vietnam?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Ontario to Vietnam.

  • Can I find deals for business class flights from Ontario to Vietnam?

    Yes. Cheapflights offers flight deals from Ontario to Vietnam by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Ontario to Vietnam?

    Currently, April is the cheapest month in which you can book a flight from Ontario to Vietnam (average of $304). Flying from Ontario to Vietnam in July is currently the most expensive (average of $707). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Top 4 airlines flying from Ontario to Vietnam

Discover the top 4 airlines that operate flights from Ontario to Vietnam. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated mars 9, 2026.
AirlineCheapestAverageFlexibilityOn-time
China AirlinesCheapest$304Average$860FlexibilityNo cancel feeOn-time70%
Korean AirCheapest$679Average$820FlexibilityNo cancel feeOn-time81%
Asiana AirlinesCheapest$735Average$917FlexibilityNo cancel feeOn-time76%
STARLUX AirlinesCheapest$744Average$878FlexibilityNo cancel feeOn-timeN/A

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