$466 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 10/25. 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

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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Flights 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

Sat, Nov 8 - Fri, Nov 21
STARLUX Airlines Logo
11:40 am - 3:50 pmSGN-ONT
19h 10m1 stop
STARLUX Airlines Logo
9:45 pm - 10:30 amONT-SGN
21h 45m1 stop
$775STARLUX Airlines
Find Deal
Sun, Aug 24 - Fri, Aug 29
STARLUX Airlines Logo
6:25 pm - 5:40 pmSGN-ONT
37h 15m1 stop
STARLUX Airlines Logo
11:45 pm - 5:15 pmONT-SGN
27h 30m1 stop
$780STARLUX Airlines
Find Deal
Thu, Sep 25 - Sun, Sep 28
China Airlines Logo
10:50 am - 6:00 pmSGN-ONT
21h 10m1 stop
China Airlines Logo
12:10 am - 9:40 amONT-SGN
19h 30m1 stop
$795China Airlines
Find Deal
Mon, Sep 1 - Tue, Sep 16
China Airlines Logo
10:50 am - 6:40 pmSGN-ONT
21h 50m1 stop
China Airlines Logo
12:10 am - 4:20 pmONT-SGN
26h 10m1 stop
$802China Airlines
Find Deal
Mon, Aug 18 - Mon, Sep 15
STARLUX Airlines Logo
11:30 am - 5:40 pmSGN-ONT
20h 10m1 stop
STARLUX Airlines Logo
11:10 pm - 10:15 amONT-SGN
21h 05m1 stop
$805STARLUX Airlines
Find Deal
Mon, Sep 1 - Mon, Sep 15
United Airlines Logo
11:15 pm - 5:37 pmSGN-ONT
32h 22m2 stops
United Airlines Logo
6:50 pm - 9:55 pmONT-SGN
37h 05m2 stops
$919United Airlines
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Thu, Sep 25 - Mon, Sep 29
United Airlines Logo
11:15 pm - 10:42 pmSGN-ONT
37h 27m2 stops
United Airlines Logo
9:36 am - 12:15 amONT-SGN
24h 39m2 stops
$924United Airlines
Find Deal
Tue, Aug 26 - Tue, Sep 16
Japan Airlines Logo
8:00 am - 6:28 pmSGN-ONT
24h 28m2 stops
Japan Airlines Logo
6:00 am - 9:45 pmONT-SGN
25h 45m2 stops
$1,031Japan Airlines
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Mon, Aug 25 - Tue, Sep 16
 Logo
1:50 am - 8:33 pmSGN-ONT
32h 43m2 stops
 Logo
3:04 pm - 9:55 amONT-SGN
28h 51m2 stops
$1,161
Find Deal
Fri, Jul 18 - Thu, Jul 31
 Logo
7:10 am - 6:40 pmSGN-ONT
25h 30m2 stops
 Logo
12:45 am - 7:00 pmONT-SGN
28h 15m2 stops
$1,196
Find Deal
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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 February, where tickets cost $673 on average for return flights. On the other hand, the most expensive months are December and April, where the average cost of tickets from Vietnam is $1,022 and $989 respectively. For one-way flights, the best month to travel is February with an average price of $673.


Good to know

Low seasonMarch
High seasonJanuary
Cheapest flight$466
Best time to beat the crowds with an average 7% drop in price.
Most popular time to fly and prices are also 6% lower on average.
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 round-trip tickets can be as cheap as $799. On the other hand, the most expensive day to fly is Saturday, where round-trip 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 round-trip 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 570 direct flights from within Vietnam to Ontario. The most common day for departures is Friday, with 15% 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.
9.0
STARLUX AirlinesOverall score based on 187 reviews
8.8Food
9.0Entertainment
9.0Boarding
9.3Crew
9.0Comfort
Airline reviews

Our transit in Taipei was disappointing. The ground crew could not tell us where the lounge was located, so we wasted 15 minutes trying to find it. The airline has a great review, but our experience says otherwise.

2.0 MediocreAnonymous, Jun 2025SFO - TPE
Read more STARLUX Airlines reviews

Our transit in Taipei was disappointing. The ground crew could not tell us where the lounge was located, so we wasted 15 minutes trying to find it. The airline has a great review, but our experience says otherwise.

Greetings when you arrive on the plane and good bye when you leave. Very attentive flight attendants.

Serve me a meal, I fell asleep during the flight. So they passed me twice.

Seats are not table comfortable. Crew members are pretty good. Can be much better!!

Very pleasant overall, although the movie selection could have been better.

Very pleasant experience overall, while the main course of the meal could have been better and the movies could have been more recent and with more variety.

I usually have ear problems when planes land. But the landing was so smooth I didn’t even notice it landing! The service was excellent!

the aircraft was fine and new. The crews can have better training. Their operations are not as smooth as EVA's. They are VERY stingy with drinking water. Throughout the entire flight, no one offered me any water and snacks. I still prefer EVA after trying out Starlux initially with lots of excitement and expectations.

Everything was smooth and professional. They could improve the raw vegan meal with fresher offerings, but otherwise they are now my favorite way to fly to Asia.

Leg space is small. Need more room for long flight.

Better organization of boarding procedures. Terrible leadership guiding people to gates.

I did not like how the plane landed. It was not smooth.

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

Not great, will likely try to fly another or maybe I should have upgraded my ticket? Needed Air…

staff are super nice and effiecient! It was a very comfortable and relaxing flight

When I booked a premium economy ticket. I then had to pay $100+ to book my seat.

Boarding could have been a little bit better but other than that it was a pretty good experience. I think because of the stowaway to Paris France recently they are being extra diligent about boarding passes at the gate. But they boarded the back of the plane first, and that's something I really think needs to start in the USA.

Didn't like on this return inbound flights (from Hong Kong to Vancouver) Outbound to the Hong Kong was good.

I was ordered vegetarian food, but didn't services to me :(

Airline itself is great. While food was being taken off of my tray my beer spilled which was a total accident and I wasn’t upset about that, what was frustrating was I had to ask for towels to clean up and wipe my leg. It would have been left as is if I hadn’t.

Everything you need to know for your flight to Ontario

Information on the airport you'll fly into in Ontario

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