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$382+ 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 2/27. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — SGN
Feb 3 — Feb 101
Mon 2/3
Mon 2/10
1 adult, Economy
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Cheap flight deals from Ontario to Vietnam

Discover tips and strategies to find the most affordable flight options for your journey from Ontario (ONT) to Vietnam (VN0). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated January 29, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$818
(United Airlines)

One-way from

$382
(Trip.com)

Popular in

June

Cheapest in

October

Average price

$950
Provider with most accurate pricing for Los Angeles-Ho Chi Minh City flight deals.
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From Ontario to Vietnam
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One-way flight from Ontario to Vietnam
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Highest demand for flights based on searches. 22% potential increase in price ($302 potential increase over avg. RT price).
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Cheapest flight prices on average. 4% potential price decrease ($43 potential savings vs. average RT price).
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Average for round-trip flights in January 2025
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Find 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 January 29, 2025.

This United Airlines deal was found by Cheapflights users on 1/29. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/106:00 amONT - SGN
2 stops28h 15mUnited Airlines
Wed 5/77:00 amSGN - ONT
2 stops21h 25mUnited Airlines
Deal found 1/29$821
This United Airlines deal was found by Cheapflights users on 1/28. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/46:00 amONT - HAN
2 stops26h 15mUnited Airlines
Tue 9/3011:35 pmHAN - ONT
2 stops30h 11mUnited Airlines
Deal found 1/28$826
This oojo deal was found by Cheapflights users on 1/28. 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.
Wed 2/1910:45 pmONT - SGN
1 stop27h 05mChina Airlines
Wed 3/1211:00 amSGN - ONT
1 stop20h 50mChina Airlines
Deal found 1/28$841
This Delta deal was found by Cheapflights users on 1/29. 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.
Thu 4/245:40 amONT - SGN
2 stops27h 35mDelta
Thu 5/151:55 pmSGN - ONT
2 stops41h 19mDelta
Deal found 1/29$855
This oojo deal was found by Cheapflights users on 1/29. 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.
Mon 3/3112:10 amONT - DAD
1 stop18h 40mChina Airlines
Thu 5/19:50 amDAD - ONT
1 stop22h 10mChina Airlines
Deal found 1/29$859
This oojo deal was found by Cheapflights users on 1/27. 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.
Wed 2/2610:45 pmONT - HAN
1 stop26h 50mChina Airlines
Wed 3/1911:35 amHAN - ONT
1 stop20h 15mChina Airlines
Deal found 1/27$864
This ScholarTrip deal was found by Cheapflights users on 1/29. 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.
Wed 3/265:40 amONT - SGN
2 stops26h 35mKorean Air
Thu 5/87:35 amSGN - ONT
2 stops23h 39mKorean Air
Deal found 1/29$932
This Korean Air deal was found by Cheapflights users on 1/29. 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.
Mon 3/36:00 amONT - SGN
2 stops25h 15mMultiple Airlines
Sun 3/911:40 pmSGN - ONT
2 stops31h 02mMultiple Airlines
Deal found 1/29$959
This Delta deal was found by Cheapflights users on 1/28. 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.
Thu 10/237:00 amONT - DAD
2 stops24h 05mDelta
Sat 11/2211:20 pmDAD - ONT
2 stops33h 02mDelta
Deal found 1/28$985
This United deal was found by Cheapflights users on 1/29. 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 United is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/106:00 amONT - DAD
2 stops24h 55mMultiple Airlines
Wed 11/1911:20 pmDAD - ONT
2 stops25h 39mMultiple Airlines
Deal found 1/29$987
This KAYAK deal was found by Cheapflights users on 1/28. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/126:00 amONT - HAN
2 stops24h 40mKorean Air
Tue 3/1111:00 pmHAN - ONT
2 stops31h 42mKorean Air
Deal found 1/28$1,010
This Justfly.com deal was found by Cheapflights users on 1/28. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/267:00 amONT - DAD
2 stops24h 55mKorean Air
Sun 11/2311:20 pmDAD - ONT
2 stops33h 02mKorean Air
Deal found 1/28$1,140

Find flights from Ontario to Vietnam within your budget

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 January 29, 2025.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

OntarioHo Chi Minh City

ONT - SGN

ONTSGN

Ontario

Tue 2/25

6:00 am-9:50 pm

2 stops24h 50m

Ho Chi Minh City

Tue 5/20

7:00 am-2:25 pm

2 stops21h 25m

$818

OntarioHo Chi Minh City

ONT - SGN

ONTSGN

Ontario

Wed 2/26

10:45 pm-4:50 pm

1 stop27h 05m

Ho Chi Minh City

Wed 3/19

11:00 am-5:50 pm

1 stop20h 50m

$841

OntarioHo Chi Minh City

ONT - SGN

ONTSGN

Ontario

Thu 4/24

5:40 am-11:15 pm

2 stops27h 35m

Ho Chi Minh City

Thu 5/15

1:55 pm-5:14 pm

2 stops41h 19m

$855

OntarioDa Nang

ONT - DAD

ONTDAD

Ontario

Mon 3/31

12:10 am-8:50 am

1 stop18h 40m

Da Nang

Thu 5/1

9:50 am-6:00 pm

1 stop22h 10m

$859

OntarioHanoi

ONT - HAN

ONTHAN

Ontario

Wed 2/26

10:45 pm-4:35 pm

1 stop26h 50m

Hanoi Noibai

Wed 3/19

11:35 am-5:50 pm

1 stop20h 15m

$864

OntarioHo Chi Minh City

ONT - SGN

ONTSGN

Ontario

Thu 4/24

8:20 am-4:30 am

1 stop30h 10m

Ho Chi Minh City

Wed 5/14

1:40 am-10:02 am

2 stops46h 22m

$925

OntarioHo Chi Minh City

ONT - SGN

ONTSGN

Ontario

Mon 3/17

5:40 am-10:15 pm

2 stops26h 35m

Ho Chi Minh City

Sun 4/13

11:45 pm-4:36 pm

2 stops30h 51m

$932

OntarioHanoi

ONT - HAN

ONTHAN

Ontario

Wed 2/12

6:00 am-9:40 pm

2 stops24h 40m

Hanoi Noibai

Tue 3/11

11:00 pm-4:42 pm

2 stops31h 42m

$1,010

OntarioDa Nang

ONT - DAD

ONTDAD

Ontario

Fri 3/28

5:40 am-9:55 pm

2 stops26h 15m

Da Nang

Sun 4/6

10:55 pm-4:43 pm

2 stops31h 48m

$1,094

OntarioDa Nang

ONT - DAD

ONTDAD

Ontario

Tue 3/4

3:30 pm-11:40 am

2 stops29h 10m

Da Nang

Wed 5/21

12:55 pm-10:57 am

2 stops36h 02m

$1,115

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/28

Showing 1-10 of 32 results
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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.

Travel insights for flights from Ontario to Vietnam

Get recent, data-driven insights about flights from Ontario to Vietnam including ideal travel times, pricing trends, and more.

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

Currently, November is the cheapest month in which you can book a flight from Ontario to Vietnam (average of $936). Flying from Ontario to Vietnam in June is currently the most expensive (average of $1,621). 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.

What is the cheapest time of day to fly from ONT to VN?

Find hourly flight availability from Ontario to Vietnam. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated January 29, 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Ontario to Vietnam as you normally would.

Rainfall in Vietnam by month

Plan your trip to Vietnam by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Vietnam ranges from 0.0 - 13.4 inches per month. September is typically the wettest month, when rainfall can reach 13.4 in. February is typically the driest time to visit Vietnam when rainfall is around 0.0 in.

Temperature in Vietnam by month

Plan your trip to Vietnam by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Vietnam, use this chart to help with planning. For those seeking warmer temperatures, April is the ideal time of year to visit, when temperatures reach an average of 86.0 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 78.8 F).

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 January 29, 2025.
Read reviews from past customers who have flown Korean Air, Japan Airlines and China Airlines from Ontario to Vietnam. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Korean Air
8.5
Very good
1,036 reviews

Boarding

8.5

Food

8.1

Overall

8.5

Entertainment

8.2

Comfort

8.3

Crew

8.8

Reviews

1 / 20

10.0
Excellent

David,Dec 2024

JFK - MCO

Flight was short, so we did not get food, but that is expected. Only have entertainment a fair rating because no wifi is provided onboard. Good flight overall.

Korean Air
8.5
Very good
1,036 reviews
Korean Air
8.5
Very good
1,036 reviews

Boarding

8.5

Food

8.1

Overall

8.5

Entertainment

8.2

Comfort

8.3

Crew

8.8

Reviews

1 / 20

10.0
Excellent

David,Dec 2024

JFK - MCO

Flight was short, so we did not get food, but that is expected. Only have entertainment a fair rating because no wifi is provided onboard. Good flight overall.

Japan Airlines
8.3
Very good
1,446 reviews
Korean Air
8.5
Very good
1,036 reviews

Boarding

8.5

Food

8.1

Overall

8.5

Entertainment

8.2

Comfort

8.3

Crew

8.8

Reviews

1 / 20

10.0
Excellent

David,Dec 2024

JFK - MCO

Flight was short, so we did not get food, but that is expected. Only have entertainment a fair rating because no wifi is provided onboard. Good flight overall.

China Airlines
8.2
Very good
727 reviews
Korean Air
8.5
Very good
1,036 reviews

Boarding

8.5

Food

8.1

Overall

8.5

Entertainment

8.2

Comfort

8.3

Crew

8.8

Reviews

1 / 20

10.0
Excellent

David,Dec 2024

JFK - MCO

Flight was short, so we did not get food, but that is expected. Only have entertainment a fair rating because no wifi is provided onboard. Good flight overall.

Delta
8.0
Very good
8,456 reviews
Korean Air
8.5
Very good
1,036 reviews

Boarding

8.5

Food

8.1

Overall

8.5

Entertainment

8.2

Comfort

8.3

Crew

8.8

Reviews

1 / 20

10.0
Excellent

David,Dec 2024

JFK - MCO

Flight was short, so we did not get food, but that is expected. Only have entertainment a fair rating because no wifi is provided onboard. Good flight overall.

Qatar Airways
7.5
Good
3,723 reviews
Korean Air
8.5
Very good
1,036 reviews

Boarding

8.5

Food

8.1

Overall

8.5

Entertainment

8.2

Comfort

8.3

Crew

8.8

Reviews

1 / 20

10.0
Excellent

David,Dec 2024

JFK - MCO

Flight was short, so we did not get food, but that is expected. Only have entertainment a fair rating because no wifi is provided onboard. Good flight overall.

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.

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

    $406 is the cheapest one-way deal found within the past few days, from Japan Airlines. You may also be able to find cheap deals on United Airlines and China Airlines, with prices starting from $423 and $486, 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 - Da Nang or Ontario - Hanoi Noibai.

  • 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, November is the cheapest month in which you can book a flight from Ontario to Vietnam (average of $936). Flying from Ontario to Vietnam in June is currently the most expensive (average of $1,621). 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

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See prices for flight routes from nearby airports that may be better suited for you.
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Top 6 airlines flying from Ontario to Vietnam

Discover the top 6 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 January 29, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$538Average$906FlexibilityNo cancel feeOn-time69%
DeltaCheapest$589Average$884FlexibilityNo cancel feeOn-timeN/A
Korean AirCheapest$657Average$940FlexibilityNo cancel feeOn-time81%
Asiana AirlinesCheapest$705Average$996FlexibilityNo cancel feeOn-time76%
China AirlinesCheapest$780Average$939FlexibilityNo cancel feeOn-time70%
STARLUX AirlinesCheapest$885Average$1,229FlexibilityNo cancel feeOn-timeN/A
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