$474 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 8/20. 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.
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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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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.

Recent round-trip flight deals from Vietnam to Ontario

KAYAK's recommended round-trip deals from the most popular airlines that fly from Vietnam to Ontario.
Discover the best prices for you by selecting your travel dates on KAYAK.
STARLUX Airlines Logo
5:50 pm - 5:05 pmHAN-ONT
37h 15m1 stop
STARLUX Airlines Logo
11:10 pm - 10:10 amONT-HAN
21h 00m1 stop
$768STARLUX Airlines
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Thu, Jun 5 - Sat, Jun 21
China Airlines Logo
5:30 pm - 6:00 pmSGN-ONT
38h 30m1 stop
China Airlines Logo
10:45 pm - 4:50 pmONT-SGN
27h 05m1 stop
$770China Airlines
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Sun, Oct 12 - Sun, Nov 16
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
$773STARLUX Airlines
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Tue, Jul 8 - Mon, Jul 28
United Airlines Logo
11:15 pm - 5:32 pmSGN-ONT
32h 17m2 stops
United Airlines Logo
6:00 am - 9:50 pmONT-SGN
49h 50m2 stops
$919United Airlines
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Sun, Sep 28 - Sun, Oct 26
United Airlines Logo
7:00 am - 5:32 pmSGN-ONT
24h 32m2 stops
United Airlines Logo
6:42 pm - 12:15 amONT-SGN
39h 33m2 stops
$926United Airlines
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Mon, Sep 29 - Sat, Nov 1
Logo
10:50 am - 6:00 pmSGN-ONT
21h 10m1 stop
Logo
7:00 am - 10:15 pmONT-SGN
25h 15m2 stops
$951
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Tue, Oct 7 - Fri, Oct 31
Logo
2:05 am - 6:00 pmSGN-ONT
29h 55m1 stop
Logo
7:00 am - 10:15 pmONT-SGN
25h 15m2 stops
$971
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Mon, Oct 6 - Fri, Oct 31
Delta Logo
7:35 am - 10:35 pmSGN-ONT
29h 00m2 stops
Delta Logo
7:00 am - 11:20 pmONT-SGN
25h 20m2 stops
$1,566Delta
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Fri, May 23 - Sun, Nov 30
Qatar Airways Logo
9:20 am - 6:36 pmSGN-ONT
47h 16m2 stops
Qatar Airways Logo
12:00 pm - 1:50 pmONT-SGN
35h 50m2 stops
$1,922Qatar Airways
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Tue, May 27 - Tue, Jun 24
Qatar Airways Logo
8:00 pm - 1:52 pmSGN-ONT
31h 52m2 stops
Qatar Airways Logo
12:00 pm - 1:50 pmONT-SGN
35h 50m2 stops
$1,955Qatar Airways
Find Deal
Mon, Jun 2 - Tue, Jun 24
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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 August and July, where the average cost of tickets from Vietnam is $1,932 and $1,236 respectively. For one-way flights, the best month to travel is February with an average price of $673.

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Good to know

Low seasonMarch
High seasonJanuary
Cheapest flight$474
Best time to beat the crowds with an average 19% drop in price.
Most popular time to fly and prices are also 18% 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 630 direct flights from within Vietnam to Ontario. The most common day for departures is Sunday, with 16% 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.

Top airline 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.
8.3
China AirlinesOverall score based on 732 reviews
8.0Entertainment
7.8Food
8.3Boarding
8.0Comfort
8.5Crew
Airline reviews

Staff was so nice and very helpful with directions aswell!

10.0 ExcellentAnonymous, Apr 2025MNL - TPE
Read more China Airlines reviews

Staff was so nice and very helpful with directions aswell!

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

It was our first time flying with China Airlines and had a very nice experience. The airline staff & crews both on the ground and air were very nice. Food on the plane was very good. Will recommend it to family and friends.

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

I would like to commend the staff from this flight. They all looked happy and I can tell they love what they are doing and constantly smiling while serving the passengers. Special mention to the guy FA in our section. I did not get his name but he is so far the best F.A I have ever encountered!

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

Ontario (ONT)

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