$446 Find Cheap Flights from Vietnam to Ontario

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight to Ontario departing on 4/22. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to Ontario

 
These are the airlines KAYAK users have selected most often from within our search results for flights to Ontario, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results for flights to Ontario, as well as popular online travel agencies
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Everything you should know

Cheapest round-trip
$753
Overall average: $989
China Airlines
Sun 4/5Tue 4/7
SGN - ONT • 1 stop
Cheapest one-way
$446
Typical prices: $513-$544
STARLUX Airlines
Wed 4/22
SGN - ONT • 1 stop
When to travel
March
Cheapest • 10% price drop
June
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
Start a new search
KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to Ontario!
Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Vietnam to Ontario

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Vietnam to Ontario that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Vietnam to Ontario

Sun, Apr 5 - Tue, Apr 7
China Airlines Logo
10:50 am - 6:00 pm
SGN
-
ONT
21h 10m1 stop
China Airlines Logo
12:10 am - 4:20 pm
ONT
-
SGN
26h 10m1 stop
$753China Airlines
Wed, Jun 3 - Mon, Jun 29
China Airlines Logo
5:30 pm - 6:00 pm
SGN
-
ONT
38h 30m1 stop
China Airlines Logo
12:10 am - 4:20 pm
ONT
-
SGN
26h 10m1 stop
$757China Airlines
Sun, Feb 1 - Sun, Feb 15
China Airlines Logo
11:00 am - 4:50 pm
SGN
-
ONT
20h 50m1 stop
China Airlines Logo
10:50 pm - 4:50 pm
ONT
-
SGN
27h 00m1 stop
$759China Airlines
Sun, Feb 1 - Sat, Feb 28
China Airlines Logo
11:00 am - 4:50 pm
SGN
-
ONT
20h 50m1 stop
China Airlines Logo
10:50 pm - 10:00 am
ONT
-
SGN
20h 10m1 stop
$767China Airlines
Wed, Jan 14 - Wed, Jan 21
China Airlines Logo
11:00 am - 4:50 pm
SGN
-
ONT
20h 50m1 stop
China Airlines Logo
10:50 pm - 10:00 am
ONT
-
SGN
20h 10m1 stop
$784China Airlines
Wed, Jan 21 - Wed, Feb 4
STARLUX Airlines Logo
11:40 am - 3:50 pm
SGN
-
ONT
19h 10m1 stop
STARLUX Airlines Logo
9:45 pm - 4:45 pm
ONT
-
SGN
28h 00m1 stop
$789STARLUX Airlines
Thu, Jan 29 - Mon, Feb 2
China Airlines Logo
5:50 pm - 4:50 pm
SGN
-
ONT
38h 00m1 stop
China Airlines Logo
10:50 pm - 4:50 pm
ONT
-
SGN
27h 00m1 stop
$790China Airlines
Wed, Jan 21 - Thu, Feb 5
China Airlines Logo
5:50 pm - 4:50 pm
SGN
-
ONT
38h 00m1 stop
China Airlines Logo
10:50 pm - 4:50 pm
ONT
-
SGN
27h 00m1 stop
$793China Airlines
Wed, Jan 28 - Mon, Feb 2
United Airlines Logo
12:25 am - 5:43 pm
HAN
-
ONT
32h 18m2 stops
United Airlines Logo
6:00 am - 11:05 pm
ONT
-
HAN
26h 05m2 stops
$1,116United Airlines
Mon, Jan 5 - Fri, Jan 16
Multiple Airlines Logo
11:40 pm - 4:50 pm
HAN
-
ONT
32h 10m3 stops
Multiple Airlines Logo
10:50 pm - 10:35 am
ONT
-
HAN
20h 45m1 stop
$1,767Multiple Airlines
Booking Insights

KAYAK's insights & trends for flights to Ontario

Get data-powered insights and trends for flights to Ontario to help you find the cheapest flights, the best time to fly and much more.

What is the cheapest month to fly to Ontario?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for flights to Ontario, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights to Ontario is March, where tickets cost $789 on average for one-way flights. On the other hand, the most expensive months are January and April, where the average cost of tickets from Vietnam is $1,248 and $989 respectively. For return trips, the best month to travel is March with an average price of $789.

Good to know

Low seasonMarch
Cheapest flight$446
Best time to beat the crowds with an average 11% drop in price.
Most popular time to fly with an average 3% increase in price.
Flight from Ho Chi Minh City to Ontario

FAQs - booking Ontario flights

  • How far is Ontario Airport from central Ontario?

    There are 3 miles between Ontario city center and Ontario Airport.

  • What is the name of Ontario’s airport?

    There is only 1 airport in Ontario, called Ontario Airport (ONT). It can also be referred to as Ontario or Ontario Intl.

  • What is the cheapest day to fly to Ontario?

    Based on KAYAK data, the cheapest day to fly to Ontario is Thursday where tickets can be as cheap as $799. On the other hand, the most expensive day to fly is Saturday, where prices are $952 on average.

  • How does KAYAK find such low prices on flights to Ontario?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights to Ontario.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket to Ontario?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Ontario is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights to Ontario?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Ontario with an airline and back with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight to Ontario?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Ontario up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

  • What is the cheapest time of day to fly to Ontario?

    The cheapest time of day to fly to Ontario is generally at night, when flights cost $760 on average. The most expensive time of day to fly to Ontario is generally in the morning, which is peak travel time and where the average cost of a ticket is $850.

  • How many direct flights to Ontario are there each week?

    Each week there are around 894 direct flights from within Vietnam to Ontario. The most common day for departures is Monday, with 17% of flights taking off on this day.

Top tips for finding cheap flights to Ontario

  • Enter your preferred departure airport and travel dates into the search form above to unlock the latest Ontario flight deals.

Reviews of the top airlines flying from Vietnam to Ontario

 
See real verified KAYAK customer reviews for airlines flying to Ontario. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline from Vietnam to Ontario. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with to Ontario? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
8.9
STARLUX AirlinesOverall score based on 245 reviews
8.9Boarding
9.2Crew
8.8Entertainment
8.8Comfort
8.7Food
Airline reviews

Starlux was great service and awesome food and drinks👍🏼 will take starlux again for my next vacation👍🏼

10.0 ExcellentTony, Dec 2025
CRK - TPE
Read more STARLUX Airlines reviews

Starlux was great service and awesome food and drinks👍🏼 will take starlux again for my next vacation👍🏼

Loved the boarding process. All airlines should board from the back to the front. Very efficient. Food was excellent, crew were great, seats were spacious and comfortable and the entertainment screen was the best I have seen.

Flight cancelled due to inclement weather yet rival airline EVA Air with the same route departed 2 hours later and landed safely while our flight was cancelled and rescheduled for 36 hours later.

The staff in air and on land went above and beyond! I would definately recommend and we will fly Starlux again!

I need Starlux to respond to my complaint and issues for my flight.

Someon vomit during boarding. My seat was next to the vomit. I asked crew member to switch seat, but they said it was a full flight. I had my baby with me. My baby got sick after the flight. He was in the hospital for 2 days.

The airplane so clean and they have a nice crew

it they come out with resent movie and good food

The crew could have been kinder and less pushy. The premium economy seats don't have enough cushion. The seats are to hard and the flight became painful and uncomfortable after an hour of flying.

Aircraft is new and toilets are spacious, but toilets are quite filthy. They should clean more often. They have a long list of drink offer but are actually not available during meal. They said they’ll come back with them and you don’t get them until after dinner which means you eat your meals without any drinks if you were to get something that they don’t have on the cart. They are strict about removing headphones during take off and landing which is new to us since the movies did not get turned off. Instead, we we’re forced to watch their commercials during that time. We probably would fly with them again but not with the cost we spent. For the record, I work in tourism and travel a lot for inspections.

Very bad. They don’t allow group people to sit together by blocking most of seats and opening only single seat during online checking in. . By doing so, they can rip off customers at the check-in counter by collecting extra money if we want to sit together in the same row.

Delayed. Not a full flight and whole rows left open with the paid seating. Food was ok. My beef meal only had one cube of beef the rest carrot cubes. Entertainment on personal device but didn’t know about it until the flight was almost done.

The flat bed full lying position is not comfortable at all, this could be improved, it is at an awkward position which i dont have the same issues with other airlines business class.

The flight was uneventful and the crew was kind and professional. Really appreciate the option to order a vegan meal for the flight!

I love my Delta crew, they were so welcoming and helpful.

I absolutely loved my flight from Taipei to LAX. I was originally assigned to a different seat, however one of the stewardess noticed I was uncomfortable in my seat. She offered to move me to a more comfortable setting. Although she didn’t have to do what she did, I am more than grateful and thankful for her doing so. My longer flight felt much more comfortable, just by her taking notice. I really appreciate her.

Overall was a lovely experience. The crew were kind and courteous throughout the entire flight.

Sat next to a woman who had her period. Blood was on her seat and on the arm rest between us. I ended up having period blood on my jacket and shoes. Very gross!

Been flying with China Airline over years many times. Good experience with them, no issues.

Most relaxing long distance flight I have been on. And I have flown on many.

Everything you need to know for your flight to Ontario

Information on the airport you'll fly into in Ontario