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

$397 is the cheapest one-way deal found within the past few days, from United Airlines. You may also be able to find cheap deals on China Airlines and Korean Air, with prices starting from $435 and $442, 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.

What are the most popular airlines that fly from Ontario to Vietnam?

Before booking your flight from Ontario to Vietnam check out the most popular airlines for this route: China Airlines, Delta or STARLUX Airlines.

How far in advance should I book a flight from Ontario to Vietnam?

Users have found that booking a flight from Ontario to Vietnam at least 55 days early can save you up to 7% on average compared to booking a flight this week. If booking 55 days before your flight isn’t an option for you, users have found flights from Ontario to Vietnam for as little as $887 when booking for a departure date within the next two weeks. You can also check prices now. Some users have found airline tickets as low as $939 for flights departing within the next 3 days.

What is the cheapest month to fly from Ontario to Vietnam?

The best pricing can be found in the month of March. Prices to Vietnam from Ontario average $970. You can even find prices in March for less than $970, as users have found deals to Vietnam from as low as $681. The month of June appears to be one of the more expensive times to travel to Vietnam from Ontario. Flying in the targeted month can save you up to 43%.

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.

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.

$923+ Flights from Ontario to Vietnam

Home Search by date Vacation packages Hotels Flight deals Car rental Travel tips & news

Find cheap flights from Ontario to Vietnam with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheap flight deals from Ontario to Vietnam

Most accurate provider	AranGrant 3 stars
Most trusted provider	AranGrant 3 stars
Round-trip from	$767 (oojo)
One-way from	$397 (United Airlines)
Popular in	June
Cheapest in	March
Average price	$812

Provider with most accurate pricing for Los Angeles-Ho Chi Minh City flight deals.

Search Deals

Provider most trusted by Cheapflights users for Los Angeles-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. 21% potential increase in price ($273 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 4% potential price decrease ($39 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in April 2025

Search Deals

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 April 15, 2025.

Sun 10/1212:10 amONT - DAD

1 stop26h 25mChina Airlines

Mon 10/205:35 pmDAD - ONT

1 stop38h 25mChina Airlines

Deal found 4/15

$762

Mon 9/112:45 amONT - HAN

1 stop19h 50mChina Airlines

Tue 9/95:50 pmHAN - ONT

1 stop38h 50mChina Airlines

Deal found 4/14

$767

Tue 9/26:00 amONT - HAN

2 stops26h 15mUnited Airlines

Tue 9/911:35 pmHAN - ONT

2 stops32h 07mUnited Airlines

Deal found 4/15

$774

Thu 8/1412:45 amONT - SGN

1 stop34h 20mChina Airlines

Mon 10/272:05 amSGN - ONT

1 stop29h 45mChina Airlines

Deal found 4/14

$777

Wed 10/227:00 amONT - HAN

2 stops24h 35mDelta

Sun 11/912:20 pmHAN - ONT

2 stops19h 57mDelta

Deal found 4/14

$780

Sun 9/287:00 amONT - HAN

2 stops24h 35mKorean Air

Wed 10/2911:00 pmHAN - ONT

2 stops32h 17mKorean Air

Deal found 4/15

$785

Sun 8/107:00 amONT - SGN

2 stops25h 05mKorean Air

Tue 10/288:05 amSGN - ONT

2 stops28h 37mKorean Air

Deal found 4/14

$788

Wed 4/166:00 amONT - SGN

2 stops25h 55mUnited Airlines

Tue 5/207:00 amSGN - ONT

2 stops27h 34mUnited Airlines

Deal found 4/14

$793

Mon 9/227:00 amONT - SGN

2 stops25h 05mDelta

Mon 10/278:05 amSGN - ONT

2 stops28h 37mDelta

Deal found 4/14

$815

Fri 8/111:45 pmONT - SGN

1 stop20h 30mSTARLUX Airlines

Mon 8/2511:30 amSGN - ONT

1 stop20h 10mSTARLUX Airlines

Deal found 4/15

$869

Mon 9/297:00 amONT - SGN

2 stops25h 05mMultiple Airlines

Mon 10/2011:30 amSGN - ONT

1 stop19h 35mMultiple Airlines

Deal found 4/14

$879

Wed 10/157:00 amONT - DAD

2 stops24h 05mKorean Air

Tue 10/2110:55 pmDAD - ONT

2 stops32h 22mKorean Air

Deal found 4/15

$896

Best flights from Ontario to Vietnam
Discover carefully curated flight deals from Ontario to Vietnam that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated April 15, 2025.

Mon 9/112:45 amONT - HAN

1 stop26h 05mChina Airlines

Tue 9/911:35 amHAN - ONT

1 stop21h 05mChina Airlines

Deal found 4/15

$767

Tue 9/26:00 amONT - HAN

2 stops26h 15mUnited Airlines

Tue 9/911:35 pmHAN - ONT

2 stops32h 07mUnited Airlines

Deal found 4/15

$774

Sun 9/287:00 amONT - HAN

2 stops24h 35mKorean Air

Wed 10/2911:00 pmHAN - ONT

2 stops32h 17mKorean Air

Deal found 4/15

$785

Mon 9/227:00 amONT - SGN

2 stops25h 05mDelta

Mon 10/278:05 amSGN - ONT

2 stops28h 37mDelta

Deal found 4/14

$815

Mon 8/411:45 pmONT - SGN

1 stop27h 30mSTARLUX Airlines

Mon 10/611:30 amSGN - ONT

1 stop19h 35mSTARLUX Airlines

Deal found 4/15

$871

Mon 9/297:00 amONT - SGN

2 stops25h 05mMultiple Airlines

Mon 10/2011:30 amSGN - ONT

1 stop19h 35mMultiple Airlines

Deal found 4/14

$879

Tue 9/237:17 pmONT - SGN

2 stops26h 23mEVA Air

Sat 10/253:45 pmSGN - ONT

2 stops32h 54mEVA Air

Deal found 4/13

$1,021

Thu 8/1412:45 amONT - SGN

1 stop34h 20mChina Airlines

Mon 10/272:05 amSGN - ONT

1 stop29h 45mChina Airlines

Deal found 4/14

$777

Sun 8/107:00 amONT - SGN

2 stops25h 05mKorean Air

Tue 10/288:05 amSGN - ONT

2 stops28h 37mKorean Air

Deal found 4/14

$788

Sat 4/265:45 amONT - HAN

2 stops25h 50mDelta

Sat 5/1711:10 pmHAN - ONT

2 stops33h 10mDelta

Deal found 4/15

$830

Mon 10/66:00 amONT - HAN

2 stops25h 50mJapan Airlines

Sat 10/2511:20 pmHAN - ONT

2 stops29h 52mJapan Airlines

Deal found 4/15

$1,713

Wed 9/311:10 pmONT - HAN

1 stop21h 00mSTARLUX Airlines

Thu 10/95:50 pmHAN - ONT

1 stop37h 15mSTARLUX Airlines

Deal found 4/15

$907

Last-minute flights from Ontario to Vietnam
Discover last-minute flight deals from Ontario to Vietnam. Data last updated April 15, 2025 and is based on user searches.

Wed 4/166:00 amONT - SGN

2 stops25h 55mUnited Airlines

Tue 5/207:00 amSGN - ONT

2 stops27h 34mUnited Airlines

Deal found 4/14

$793

Fri 4/185:45 amONT - SGN

2 stops27h 30mDelta

Sun 6/111:45 pmSGN - ONT

2 stops36h 50mDelta

Deal found 4/15

$830

Fri 4/185:45 amONT - SGN

2 stops26h 20mMultiple Airlines

Wed 6/411:30 amSGN - ONT

1 stop19h 35mMultiple Airlines

Deal found 4/15

$954

Fri 4/1812:10 amONT - DAD

2 stops32h 15mMultiple Airlines

Thu 5/111:15 pmDAD - ONT

2 stops32h 45mMultiple Airlines

Deal found 4/14

$1,084

Mon 4/215:45 amONT - DAD

2 stops25h 20mKorean Air

Mon 5/1210:55 pmDAD - ONT

2 stops33h 25mKorean Air

Deal found 4/15

$920

Mon 4/2112:10 amONT - HAN

1 stop26h 40mMultiple Airlines

Sat 4/267:25 amHAN - ONT

2 stops24h 35mMultiple Airlines

Deal found 4/15

$1,373

Tue 4/2212:10 amONT - SGN

1 stop26h 10mChina Airlines

Tue 6/1010:50 amSGN - ONT

1 stop21h 10mChina Airlines

Deal found 4/14

$785

Tue 4/2212:10 amONT - DAD

2 stops32h 40mMultiple Airlines

Sat 5/37:20 amDAD - ONT

2 stops24h 40mMultiple Airlines

Deal found 4/14

$1,192

Wed 4/237:05 amONT - SGN

2 stops27h 10mUnited Airlines

Wed 5/217:00 amSGN - ONT

2 stops21h 25mUnited Airlines

Deal found 4/13

$796

Wed 4/235:45 amONT - SGN

2 stops40h 50mKorean Air

Tue 6/107:35 amSGN - ONT

2 stops29h 11mKorean Air

Deal found 4/14

$810

Wed 4/235:45 amONT - SGN

2 stops27h 30mMultiple Airlines

Tue 6/106:25 pmSGN - ONT

1 stop36h 40mMultiple Airlines

Deal found 4/14

$985

Wed 4/236:00 amONT - DAD

3 stops41h 40mQatar Airways

Sat 5/311:25 amDAD - ONT

3 stops74h 34mQatar Airways

Deal found 4/14

$1,920

One-way flights from Ontario to Vietnam
Search for one-way flight options from Ontario to Vietnam. Find affordable one-way fares based on user searches. Data last updated April 15, 2025.

Tue 4/226:00 amONT - SGN

2 stops28h 15mUnited Airlines

Deal found 4/14

$397

Mon 4/288:10 amONT - SGN

2 stops35h 55mMultiple Airlines

Deal found 4/14

$433

Mon 4/2112:10 amONT - SGN

1 stop26h 10mChina Airlines

Deal found 4/14

$435

Thu 4/245:45 amONT - SGN

2 stops27h 30mKorean Air

Deal found 4/14

$442

Fri 4/185:45 amONT - HAN

2 stops25h 50mKorean Air

Deal found 4/14

$443

Sat 4/265:45 amONT - HAN

2 stops25h 50mDelta

Deal found 4/15

$445

Sat 5/35:45 amONT - SGN

2 stops40h 50mDelta

Deal found 4/14

$450

Tue 4/2212:10 amONT - HAN

1 stop20h 25mChina Airlines

Deal found 4/14

$468

Tue 4/225:45 amONT - DAD

2 stops25h 20mKorean Air

Deal found 4/14

$498

Thu 5/812:10 amONT - DAD

1 stop18h 40mChina Airlines

Deal found 4/14

$500

Tue 4/2212:10 amONT - DAD

2 stops27h 25mMultiple Airlines

Deal found 4/14

$554

Tue 4/2212:10 amONT - HAN

2 stops34h 10mMultiple Airlines

Deal found 4/14

$561

Cheapflights Fare Finder

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 10/12

12:10 am-4:35 pm

1 stop26h 25m

Da Nang

Mon 10/20

5:35 pm-6:00 pm

1 stop38h 25m

$762

OntarioHo Chi Minh City

ONT - SGN

ONTSGN

Ontario

Tue 4/22

12:10 am-4:20 pm

1 stop26h 10m

Ho Chi Minh City

Tue 6/10

10:50 am-6:00 pm

1 stop21h 10m

$785

OntarioHo Chi Minh City

ONT - SGN

ONTSGN

Ontario

Wed 4/23

7:05 am-12:15 am

2 stops27h 10m

Ho Chi Minh City

Wed 5/21

7:00 am-2:25 pm

2 stops21h 25m

$796

OntarioHanoi

ONT - HAN

ONTHAN

Ontario

Mon 4/28

12:10 am-4:50 pm

1 stop26h 40m

Hanoi Noibai

Tue 5/13

11:35 am-6:00 pm

1 stop20h 25m

$809

OntarioHo Chi Minh City

ONT - SGN

ONTSGN

Ontario

Wed 4/23

5:45 am-12:35 pm

2 stops40h 50m

Ho Chi Minh City

Tue 6/10

7:35 am-10:46 pm

2 stops29h 11m

$810

OntarioHo Chi Minh City

ONT - SGN

ONTSGN

Ontario

Fri 4/18

5:45 am-11:15 pm

2 stops27h 30m

Ho Chi Minh City

Sun 6/1

11:45 pm-10:35 pm

2 stops36h 50m

$830

OntarioHanoi

ONT - HAN

ONTHAN

Ontario

Fri 4/25

5:45 am-10:40 am

2 stops38h 55m

Hanoi Noibai

Sat 5/10

11:10 pm-6:20 pm

2 stops33h 10m

$835

OntarioHo Chi Minh City

ONT - SGN

ONTSGN

Ontario

Fri 4/18

5:45 am-10:05 pm

2 stops26h 20m

Ho Chi Minh City

Wed 6/4

11:30 am-5:05 pm

1 stop19h 35m

$954

OntarioDa Nang

ONT - DAD

ONTDAD

Ontario

Sat 8/2

11:45 pm-5:35 pm

1 stop27h 50m

Da Nang

Sat 8/23

9:50 am-6:40 pm

1 stop22h 50m

$1,046

OntarioHanoi

ONT - HAN

ONTHAN

Ontario

Mon 4/28

4:29 pm-11:05 am

2 stops28h 36m

Hanoi Noibai

Wed 5/28

6:00 pm-10:57 am

2 stops30h 57m

$1,070

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/14

Showing 1-10 of 38 results

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, March is the cheapest month in which you can book a flight from Ontario to Vietnam (average of $922). Flying from Ontario to Vietnam in June is currently the most expensive (average of $1,566). 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?

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

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

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

Read reviews from past customers who have flown STARLUX Airlines, EVA Air and Korean Air from Ontario to Vietnam. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.

STARLUX Airlines

9.1

Wonderful

154 reviews

Reviews

1 / 5

10.0

Excellent

Andrew,Jan 2025

LAX - TPE

Crew were attentive from start to finish. Each meal was amazing. IFE screen was huge and had quite a bit of western movies, however the tv shows were lacking.

STARLUX Airlines

9.1

Wonderful

154 reviews

STARLUX Airlines

9.1

Wonderful

154 reviews

Reviews

1 / 5

10.0

Excellent

Andrew,Jan 2025

LAX - TPE

Crew were attentive from start to finish. Each meal was amazing. IFE screen was huge and had quite a bit of western movies, however the tv shows were lacking.

EVA Air

8.4

Very good

1,176 reviews

STARLUX Airlines

9.1

Wonderful

154 reviews

Reviews

1 / 5

10.0

Excellent

Andrew,Jan 2025

LAX - TPE

Crew were attentive from start to finish. Each meal was amazing. IFE screen was huge and had quite a bit of western movies, however the tv shows were lacking.

Korean Air

8.4

Very good

1,063 reviews

STARLUX Airlines

9.1

Wonderful

154 reviews

Reviews

1 / 5

10.0

Excellent

Andrew,Jan 2025

LAX - TPE

Crew were attentive from start to finish. Each meal was amazing. IFE screen was huge and had quite a bit of western movies, however the tv shows were lacking.

Japan Airlines

8.3

Very good

1,440 reviews

STARLUX Airlines

9.1

Wonderful

154 reviews

Reviews

1 / 5

10.0

Excellent

Andrew,Jan 2025

LAX - TPE

Crew were attentive from start to finish. Each meal was amazing. IFE screen was huge and had quite a bit of western movies, however the tv shows were lacking.

China Airlines

8.2

Very good

729 reviews

STARLUX Airlines

9.1

Wonderful

154 reviews

Reviews

1 / 5

10.0

Excellent

Andrew,Jan 2025

LAX - TPE

Crew were attentive from start to finish. Each meal was amazing. IFE screen was huge and had quite a bit of western movies, however the tv shows were lacking.

Related info for your journey

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?
$397 is the cheapest one-way deal found within the past few days, from United Airlines. You may also be able to find cheap deals on China Airlines and Korean Air, with prices starting from $435 and $442, 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, March is the cheapest month in which you can book a flight from Ontario to Vietnam (average of $922). Flying from Ontario to Vietnam in June is currently the most expensive (average of $1,566). 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

Alternative routes for Ontario to Vietnam

Los Angeles to Haneda flights

Los Angeles to Narita flights

San Francisco to Haneda flights

San Francisco to Narita flights

Los Angeles to Manila flights

San Francisco to Manila flights

Los Angeles to Incheon Intl flights

Los Angeles to Suvarnabhumi flights

Ontario to Narita flights

Los Angeles to Ho Chi Minh City flights

San Francisco to Taiwan Taoyuan Intl flights

San Francisco to New Delhi flights

Ontario to Haneda flights

San Diego to Narita flights

San Francisco to Hong Kong flights

Los Angeles to Taiwan Taoyuan Intl flights

San Francisco to Hongqiao Intl flights

San Francisco to Incheon Intl flights

San Francisco to Suvarnabhumi flights

Burbank to Narita flights

San Francisco to Pu Dong flights

Los Angeles to Kansai Intl flights

San Francisco to Mumbai flights

San Francisco to Ho Chi Minh City flights

Los Angeles to Hongqiao Intl flights

Los Angeles to Hong Kong flights

Los Angeles to Singapore flights

Ontario to Manila flights

Los Angeles to Pu Dong flights

Los Angeles to Gimpo Intl flights

San Francisco to Kansai Intl flights

Santa Ana to Narita flights

Burbank to Manila flights

San Diego to Haneda flights

San Francisco to Singapore flights

Santa Ana to Manila flights

San Francisco to Capital flights

San Francisco to Gimpo Intl flights

Los Angeles to Denpasar flights

San Francisco to Hyderabad flights

San Jose to Haneda flights

San Jose to New Delhi flights

Las Vegas to Narita flights

Los Angeles to Sung Shan flights

Ontario to Ho Chi Minh City flights

Ontario to Suvarnabhumi flights

Oakland to Narita flights

San Francisco to Bangalore flights

San Francisco to Denpasar flights

San Jose to Manila flights

Top 6 airlines flying from Ontario to Vietnam

Airline	Cheapest	Average	Flexibility	On-time
United Airlines	Cheapest$538	Average$906	FlexibilityNo cancel fee	On-time69%
Delta	Cheapest$556	Average$833	FlexibilityNo cancel fee	On-timeN/A
Korean Air	Cheapest$657	Average$930	FlexibilityNo cancel fee	On-time81%
Asiana Airlines	Cheapest$705	Average$909	FlexibilityNo cancel fee	On-time76%
China Airlines	Cheapest$769	Average$915	FlexibilityNo cancel fee	On-time70%
STARLUX Airlines	Cheapest$885	Average$1,206	FlexibilityNo cancel fee	On-timeN/A

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.

$397+ 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 4/22. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Ontario to Vietnam with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Cheap flight deals from Ontario to Vietnam

Keep the following information in mind while searching for Ontario to Vietnam flight deals. Data was last updated April 15, 2025.

Most accurate provider

Most trusted provider

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Find flight deals from Ontario to Vietnam

Cheapest flights from Ontario to VietnamExplore 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 April 15, 2025.

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 April 15, 2025.

Cheapflights Fare Finder

Use the filters below to find and compare flights from Ontario to Vietnam that are best for you.

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.

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?

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 April 15, 2025.

Rainfall in Vietnam by month

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

Temperature in Vietnam by month

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

Reviews of airlines servicing Vietnam

Read reviews from past customers who have flown STARLUX Airlines, EVA Air and Korean Air from Ontario to Vietnam. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.

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?

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

What are the most popular routes from Ontario to Vietnam?

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

How can I find direct flights from Ontario to Vietnam?

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

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

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.

Alternative routes for Ontario to Vietnam

See prices for flight routes from nearby airports that may be better suited for you.

Top 6 airlines flying from Ontario to Vietnam

100% Free

Book with Flexibility

Travel Smart

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 April 15, 2025.