$490 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 11/9. 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

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Cheap Flights from Ontario to Vietnam

Cheapest round-trip prices found by our users on KAYAK in the last 72 hours
Ho Chi Minh City
Ho Chi Minh City2 stops$945
Hanoi
Hanoi2 stops$962
Da Nang
Da Nang1 stop$1,007
Ho Chi Minh City
Ho Chi Minh City2 stops$945
Hanoi
Hanoi2 stops$962
Da Nang
Da Nang1 stop$1,007

Book Cheap Ontario to Vietnam Plane Tickets

 
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.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Ontario to Vietnam

Mon, Aug 24 - Tue, Sep 8
Delta Logo
6:20 am - 10:10 pm
ONT
-
SGN
25h 50m
2 stops
Delta Logo
7:30 am - 10:40 pm
SGN
-
ONT
29h 10m
2 stops
$945Delta
Sun, Aug 16 - Sun, Sep 6
Delta Logo
5:05 pm - 10:10 pm
ONT
-
SGN
39h 05m
2 stops
Delta Logo
11:45 pm - 10:45 pm
SGN
-
ONT
37h 00m
2 stops
$951Delta
Mon, Aug 24 - Tue, Sep 8
Korean Air Logo
6:20 am - 10:35 am
ONT
-
HAN
38h 15m
2 stops
Korean Air Logo
11:10 pm - 5:16 pm
HAN
-
ONT
32h 06m
2 stops
$962Korean Air
Tue, Sep 15 - Sat, Sep 26
Multiple Airlines Logo
12:10 am - 9:40 am
ONT
-
SGN
19h 30m
1 stop
Multiple Airlines Logo
11:20 am - 6:00 pm
SGN
-
ONT
20h 40m
1 stop
$975Multiple Airlines
Mon, Oct 5 - Tue, Nov 3
Multiple Airlines Logo
12:10 am - 9:40 am
ONT
-
SGN
19h 30m
1 stop
Multiple Airlines Logo
11:20 am - 4:50 pm
SGN
-
ONT
20h 30m
1 stop
$976Multiple Airlines
Sat, Nov 7 - Tue, Nov 24
China Airlines Logo
10:50 pm - 4:50 pm
ONT
-
SGN
27h 00m
1 stop
China Airlines Logo
5:50 pm - 4:50 pm
SGN
-
ONT
38h 00m
1 stop
$978China Airlines
Wed, Aug 5 - Mon, Sep 28
China Airlines Logo
12:45 am - 4:20 pm
ONT
-
SGN
25h 35m
1 stop
China Airlines Logo
5:30 pm - 6:00 pm
SGN
-
ONT
38h 30m
1 stop
$980China Airlines
Mon, Aug 24 - Tue, Sep 8
Korean Air Logo
6:20 am - 10:35 am
ONT
-
HAN
38h 15m
2 stops
Korean Air Logo
12:05 pm - 5:16 pm
HAN
-
ONT
43h 11m
2 stops
$983Korean Air
Fri, Aug 21 - Sun, Sep 6
STARLUX Airlines Logo
11:55 pm - 5:35 pm
ONT
-
DAD
27h 40m
1 stop
STARLUX Airlines Logo
6:45 pm - 5:05 pm
DAD
-
ONT
36h 20m
1 stop
$1,007STARLUX Airlines
Fri, Aug 7 - Mon, Aug 24
STARLUX Airlines Logo
11:55 pm - 10:10 am
ONT
-
HAN
20h 15m
1 stop
STARLUX Airlines Logo
11:10 am - 5:40 pm
HAN
-
ONT
20h 30m
1 stop
$1,012STARLUX Airlines
Booking Insights

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 April, when tickets cost $360 (return) on average. On the other hand, the most expensive months are December and July, when the average cost of round-trip tickets is $928 and $871 respectively.

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, which saves you about 27% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 19 weeks before departure.

Good to know

Low seasonJune
Cheapest flight$490
Best time to beat the crowds but there is an average 71% increase in price.
Most popular time to fly and prices are also 16% lower on average.
Flight from Ontario to Ho Chi Minh City

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.

Reviews of the 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.
8.9
STARLUX AirlinesOverall score based on 326 reviews
8.9Boarding
9.2Crew
8.8Entertainment
8.9Comfort
8.6Food
Airline reviews

Hostesses were very nice I am disappointed that I paid extra 900$for premium economy which wasn't much upgraded from regular economy, I have wasted my money on this trip 😫

6.0 GoodAnonymous, May 2026
ONT - TPE
Read more STARLUX Airlines reviews

Hostesses were very nice I am disappointed that I paid extra 900$for premium economy which wasn't much upgraded from regular economy, I have wasted my money on this trip 😫

amazing and great food. everything was smooth from start to finished

love this boutique luxury airline. crew was nice and attentive. Lounge is too small , i think they should have more area for relaxing and lounging not just to sit and eat .. feels like a cafeteria more than a lounge. overall i enjoy it. food on the plane LAX to Teipei should inprove a bit. no flavor and more drinks pls

We are scare because almost missing the fligh from Seattle to San Diego ! Starlux not have enough members for servicing with wheel chairs? We almost left behind , so we must walking !?

We are on economy premium but they put us in economy seating? Asking why the fligh supports said : If you not happy you can claim for refund?

FLEW IN BUSINESS CLASS OVER NIGHT FLIGHT AIRLINE BOOKED A PARENT AND ONE YEAR OLD KID PARENT ALLOWED THE KID TO DISTURB EVERYONES SLEEP A terrible flight that was expensive I have 10 grand children I love kids But to be disturbed on a over night flight is in not what I paid for I hold the air line responsible Respectfully, Al Eaddy

I liked everything but I flew business class and StarLux booked another passenger and a one year old , in business class The child cried 80 percent of the flight, the flight was a long 13 hour flight. I’m 75 and I have 10 grand children, I love kids But with that said it still made it not and enjoyable flight. Ask your great flight attendance what they think of the situation, they had to deal with. Let me know what they said Respectfully, Al Eaddy

Everything is smooth. Very good. Except flight arrived SFO 30min late.

Great airline. Kind staff, before m, during, and after the flight. They Directed you the whole way. Even when I arrived at my transfer destination, flight attendants guided passengers on which direction to go. I would definitely fly STARLUX again.

Got dinner and breakfast! They had mahjong game in entertainment system. Current movies. Loved the slippers, sleeping mask packet. Great experience for a long flight

AAAAHHHH... It was shocking in a very positive way, the attention to detail, the courtesy, the manners of all personnel on board, the constant honest smiling. You can see and feel they take pride in all they do no matter how trivial. The plane in general was very comfortable. I can't wait to do it again

The boarding process was efficient and quick. The seats were comfortable. The food was good. The service was excellent. We had a lovely flight from Seattle on Korean air

Flight crew was fantastic. The aircraft was meticulously cleaned at all times. The crew was continuously checking to see if the passengers were ok.

They were trying to get people to check luggage because the over head compartments were full but when we boarded there were lots of empty places that people could have put the luggage.

It was good, I liked the self-serve snacks but it was a little difficult to get the alcohol, which is understandable since I wouldn't want kids sneaking it.

Friendly flight attendants and gate agents. Very clean plane and food was good!

I was unable to select decent seats, and so I was stuck in the middle seat because it was selected for me

There was a lot of partial tv shows but not enough to last the flight. The food was incredible! The crew were so helpful and patient. Lots more space than what I usually get on an international flight. Very comfortable!

This flight was a superior flight in all regards. Extremely pleasant experience.

Stingy on the drinks - 15 hour direct flight and could barely get attention for some water

We really enjoyed our flight to Seattle. The food was great and service was attentive.

Flight attendants. Food, entertainment and most of all, be on time.

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.

Hour late but understandable under the conditions. Taoyuan airport could have clearer signs language wise and more staff to help direct people.

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.

We are glad to have used China Airlines for our trip. Continue the good service! Thank you!

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.

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

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

Humm, I should have known that the seat I peaked on my flight from Inchon to Manila was designed for a toddler or very small person.

The staff hold my luggage to steel and exchange my stub, i was very disappointed.

Kayak uses scammer sites to steal money from their victims.

Kayak along with airfare assay are attempting to steal my money. Charges are being pressed.

Customer service and attention to details. The food was good.

Food could be better it was okay. Entertainment seems dated it was something but in this day and age could be a lot better.

I’d have rated Asiana good except an unfortunate incident in which I felt one of your employee didn’t really help us. During the first leg of the trip, the flight from LAX to ICN, I left my backpack on the plane. When I realized, I reported to one of your employee who promised me that it’d be taken care of, that my backpack will be there at HCM city. When we arrived there, HCM people had no idea and my backpack was still at Incheon airport who denied any knowledge whatsoever. I was left in the cold and felt helpless. I was very disappointed. I’d like someone to look into this and let me know.

It was my first time flying Asiana but i was very pleased with how professional and understanding the flight crew is with little kids. One flight attendant held my 3 year old daughter’s hand guiding her to the exit after landing while i had my hands full with luggage and my infant. She was very helpful.

The customer service was excellent. They noticed that our connecting flight was scheduled too closely for us to complete customs, so they changed the flight. Our initial flight was delayed, and they were able to get us on another flight, all without charging us any additional fees. I would fly them again anytime!

Better screens, it would have been nice to have more comfortable seats.

While they turned off most cabin lights to allow people to sleep, I was bothered by how bright the side lights still were. It was still quite bright for me in a window seat, when I wish I could have slept!

Generally on time departures and arrivals, clean planes, sky miles membership provides great benefits (complimentary upgrades, etc).

N Everything was perfect from boarding to assistance to baggage in Tampa

Loved the crew! Sucks that we went from 1 hour and 8 minute layover to a 3 hour layover. But weather sucks like that.

Fast, lovely scenery, great info on the Delta flight screen about landmarks we were flying over. Great landing!

Long flight but comfortable and not freezing as I have experienced on Hawaiian flights to the islands. They gave us blankets just in case. Nice touch.

I took seat 15A in anticipation of window seat, there is no window.

Flight late, the waited for a long time for “personal” to arrive at gate to dock the plane in Rochester. So annoying. This flight was expected, why aren’t personel available for the jet bridge?

My recent experience was excellent on Delta! I flew with Delta Comfort and I was really comfortable in my seat. I enjoyed the in-flight service. The flight attendants were so friendly and hospitable. I love the snack on the flight as well. This was my first time flying on Delta and I will definitely consider flying with them again.

My flight was canceled on Sunday. Rebooking took three hours. Had to pay for accommodations another night. New flight was delayed for 5 hours, all that was sent was a 12 dollar food voucher, which doesn’t tell you how to use it. Then when we landed we had to sit on the plane for an hour before we could get off.

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

Information on your arrival and departure airports