$362 Find Cheap Flights from Ontario to Vietnam

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Ontario to Vietnam departing on 9/10. 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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Best Vietnam Flight Deals from Ontario

Cheapest round-trip prices found by our users on KAYAK in the last 72 hours

Ho Chi Minh City
Ho Chi Minh City2 stops$714
Hanoi
Hanoi2 stops$774
Da Nang
Da Nang2 stops$821
Ho Chi Minh City
Ho Chi Minh City2 stops$714
Hanoi
Hanoi2 stops$774
Da Nang
Da Nang2 stops$821

Cheap Flights from Ontario to Vietnam

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Ontario to Vietnam 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 Ontario to Vietnam

Recommended round-trip deals departing in the coming months from the most popular airlines that fly from Ontario to Vietnam.
Discover the best prices for you by selecting your travel dates on KAYAK.
Korean Air Logo
6:30 am - 10:05 pmONT-SGN
25h 35m2 stops
Korean Air Logo
7:35 am - 5:17 pmSGN-ONT
23h 42m2 stops
$714Korean Air
Find Deal
Thu, Aug 7 - Wed, Sep 10
Korean Air Logo
7:00 am - 10:05 pmONT-SGN
25h 05m2 stops
Korean Air Logo
7:35 am - 5:17 pmSGN-ONT
23h 42m2 stops
$721Korean Air
Find Deal
Thu, Sep 25 - Tue, Oct 14
United Airlines Logo
6:30 pm - 9:55 pmONT-SGN
37h 25m2 stops
United Airlines Logo
11:05 pm - 6:00 pmSGN-ONT
32h 55m2 stops
$763United Airlines
Find Deal
Mon, Oct 6 - Mon, Oct 27
United Airlines Logo
6:00 am - 9:55 pmONT-SGN
25h 55m2 stops
United Airlines Logo
7:00 am - 5:17 pmSGN-ONT
24h 17m2 stops
$766United Airlines
Find Deal
Mon, Sep 1 - Tue, Sep 30
STARLUX Airlines Logo
11:10 pm - 10:15 amONT-SGN
21h 05m1 stop
STARLUX Airlines Logo
11:30 am - 5:05 pmSGN-ONT
19h 35m1 stop
$794STARLUX Airlines
Find Deal
Wed, Sep 10 - Wed, Oct 1
STARLUX Airlines Logo
11:45 pm - 10:15 amONT-SGN
20h 30m1 stop
STARLUX Airlines Logo
11:30 am - 5:05 pmSGN-ONT
19h 35m1 stop
$807STARLUX Airlines
Find Deal
Sat, Aug 16 - Fri, Sep 12
Delta Logo
7:00 am - 10:05 pmONT-SGN
25h 05m2 stops
Delta Logo
7:35 am - 10:42 pmSGN-ONT
29h 07m2 stops
$817Delta
Find Deal
Mon, Sep 22 - Thu, Oct 23
China Airlines Logo
12:10 am - 4:20 pmONT-SGN
26h 10m1 stop
China Airlines Logo
2:05 am - 6:00 pmSGN-ONT
29h 55m1 stop
$827China Airlines
Find Deal
Wed, Sep 24 - Mon, Oct 13
Delta Logo
6:30 am - 10:05 pmONT-SGN
25h 35m2 stops
Delta Logo
11:45 pm - 11:43 pmSGN-ONT
37h 58m2 stops
$832Delta
Find Deal
Fri, Aug 1 - Tue, Sep 2
China Airlines Logo
12:45 am - 4:20 pmONT-SGN
25h 35m1 stop
China Airlines Logo
5:30 pm - 6:00 pmSGN-ONT
38h 30m1 stop
$845China Airlines
Find Deal
Sun, Aug 31 - Tue, Sep 30
Useful Info

KAYAK's insights & trends for Ontario to Vietnam flights

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

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Ontario to Vietnam, 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 from Ontario to Vietnam is September, when tickets cost $831 (return) on average. On the other hand, the most expensive months are June and May, when the average cost of round-trip tickets is $1,399 and $1,287 respectively.

What’s the cheapest day of the week to fly from Ontario to Vietnam?

The average price of all round-trip flights from Ontario to Vietnam clicked on KAYAK for each day over the last 12 months.

If your flying dates are flexible, you should consider flying to Vietnam on a Tuesday, as we generally find the cheapest rates on that day for this route. On the other hand, Friday is the most expensive day to fly from Ontario to Vietnam. For your return ticket, we recommend flying on a Thursday and avoiding Saturdays for the best deals.

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

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Ontario to Vietnam, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below average price on the flight from Ontario to Vietnam, you should book around 2 weeks before departure. For the absolute cheapest price, our data suggests you should book 3 weeks before departure.


Good to know

Low seasonOctober
High seasonJune
Cheapest flight$362
Best time to beat the crowds with an average 16% drop in price.
Most popular time to fly with an average 54% increase in price.
Flight from Ontario to Hanoi

FAQs - booking Vietnam flights

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

    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 from Ontario to Vietnam.

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

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

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

    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 from Ontario to Vietnam 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 from Ontario to Vietnam?

    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 from Ontario to Vietnam 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 Vietnam?

    The cheapest time of day to fly to Vietnam is generally in the morning, when round-trip flights cost $914 on average. Morning departures are around 22% cheaper than evening flights, on average. The most expensive time of day to fly to Vietnam is generally in the evening, which is peak travel time and where the average cost of a ticket is $1,167.

Top 5 airlines serving from Ontario to Vietnam

Need help choosing which airline to fly with from Ontario to Vietnam? 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.
9.1
STARLUX AirlinesOverall score based on 161 reviews
8.9Food
9.0Comfort
9.3Crew
9.0Entertainment
9.0Boarding
Airline reviews

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

10.0 ExcellentAnonymous, Apr 2025TPE - SFO
Read more STARLUX Airlines reviews

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.

Leg space is too small. Need to increase space for long flight.

Amazing!!! It really is good! The seats do go back far to relax so if you don’t like the person to go back, just adjust and go back and everyone goes back to settle and be comfy. Enjoy few free drinks and the little amenities they provide.

This Airline is really good! Better than Eva air for sure and more luxury. I really liked all the small details and amenities plus it really is free alcohol!

The crew services, the flight, the updates and our experience was awesome. Thank you.

The delay in Korea was a pain and set us back a day. I have to give big props to Korean Air for setting up a hotel with dinner and transportation to and from the hotel. I also needed assistance with a wheelchair and they did an outstanding job.

Great except for the delay in Korea. Korean Air did a great job setting up a hotel for the night. I also needed assistance with a wheelchair and they were outstanding.

The flight was on time and very quick, as expected, but the leg room isn't great in coach seats.

Flight delayed going to Korea. No free WiFi. Other than that everything else is were good. I would love to fly with Korea airline again

Just a typical domestic poor flight nothing more. There is no food choices in such a flight. Crew doesn't really care if you are on-board or not

Food choice could be better, plus the crew can walk around and offer snacks and drinks. Also the air-conditioning onboard blows high speed, and very cold makes the trip uncomfortable.

long flights are difficult but the crew and amenities made it a very good experience

Our seat row plus one ahead and behind we're completely overlooked during beverage service...

Need to have space for Cary on when traveler boarding any zone

When I selected my seats, it showed row 29 as the front row, so I paid extra to sit in what I thought would be the front row, but when I boarded the plane, row 29 was the second economy row. I was disappointed that I'd spent almost $100 more for no actual benefit.

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 don’t think I’ll be flying them again. Tight seats, no flowing air or air nozzles that you can turn air on you, for those who could have motion sickness this would be your worst nightmare. The pilot was great and experienced (which is what you want when flying 12 hours) overall I’m thankful knowledgeable pilots!

My ticket did not indication which group I was in for boarding; the gate attended help me

Very routh cabin crew food is only 2 meals for 13 hours fry with them They should get better training how to service good super routh language and talking with customer

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!

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.

It was amazing. I was not expecting the phenomenal customer service Asiana provides.

It was all perfect and very pleasant for such long flights

The seats felt very small. We were supplied with pillows and blankets, which was nice. Lots of noise from the bathroom, plus exterior noise. Made it hard to hear the entertainment system, even using my own noise-cancelling headphones. The food was really bad. I generally request a vegetarian meal and one was supplied, but the pasta was cold and hard and there was nothing pleasant about it. Two meals were served on this flight; one was a repeat of the meal I had had on the flight immediately preceding this one, which was bad enough I didn't even try it. Drinks were very limited. All I wanted was water, and on a 10.5 hour flight, I was given 3 cups of about 3 ounces each.

The seats felt very small. We were supplied with pillows and blankets, which was nice. Lots of noise from the bathroom, plus exterior noise. Made it hard to hear the entertainment system, even using my own noise-cancelling headphones. The food was really bad. I generally request a vegetarian meal and one was supplied, but the pasta was cold and hard and there was nothing pleasant about it. Drinks were very limited. All I wanted was water, and on a 4 hour flight, I was given 2 cups of about 3 ounces each.

We took business class, It was comfortable and I was able to sleep.

Everything was perfect. A flight attendant even brought me snacks after I declined food due to my desire to force myself to follow the destination time zone.

For the most part, it was an enjoyable experience. It's the 2nd half of the journey was a bit uncomfortable. It was on a noticable smaller plane compared to the previous one.

Only process that my luggage didn’t make it to my destination because of short connection but I understand

The boarding process was good. The toilet could be better maintained.

Great service. They could offer vegetarian food and do more to reduce waste.

Delta flight was on time, seats were comfortable, and crew was nice.

Bathrooms dirty sinks clogged. No one seemed to clean them. Plane very old

Thank you for not flipping the plane on the run way. You guys get a 5 star rating for the flight!!!

Boarding is, as it always is… horrible. Gate lice. Slow moving zones. Too many people with carry ons

It was terrible, if they ran flights on time it would make a big difference.

Delta seems to be improving in many areas, except they are super bad with the food available. Bring back normal food service on long flights.

I actually received a notification from kayak on email but not one by text from Delta when my departure gait changed and I almost missed my flight

New boarding doesn't make sense. Filling front first is slow.

Delta flight was great from the check in all the way to arrival. However, I had a very bad experience. I requested a wheelchair and the wheelchair employee that went to pick me up from the plane in Boston to bring me to the baggage claims told me I have to pay him. I was under the impression that it was a free service and I usually give tips but the person forced me to pay and since I said no because I was upset with his demand when my daughter walked in to pick me up he demanded payment from my daughter who paid him thinking maybe now it is a charged service.

Horrible. Grateful to be alive but spent 13 hours at airport only to return back to my familys house and flight changed to next day. They tried to fix a part on plane, had no back up plane and after 10 hours , reattempted the flight and it STILL wasn't fixed. We got a meal voucher and rescheduled flight but there should be some other compensation for the 15 hours spent in airport

Everything you need to know for your flight from Ontario to Vietnam

Information on your arrival and departure airports

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