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$464 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 6/19. 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
0 bags
Sat 6/29
Sat 7/6

Search 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
In the last 7 days travelers have searched 42,686,544 times on KAYAK, and here is why:

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Flights to Ontario - Travel Insights & Trends

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 day to fly to Ontario?

The average price of all flights to Ontario clicked on KAYAK for each day over the last 12 months.
Based on KAYAK data, the cheapest day to fly to Ontario is Saturday where tickets can be as cheap as $849. On the other hand, the most expensive day to fly is Sunday, where prices are $1,168 on average.

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 September, where tickets cost $837 on average for one-way flights. On the other hand, the most expensive months are July and August, where the average cost of tickets from Vietnam is $1,571 and $1,101 respectively. For return trips, the best month to travel is September with an average price of $837.

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

The average price for all flights to Ontario depending on the time of departure, clicked by users on KAYAK in the last 2 weeks.
The cheapest time of day to fly to Ontario is generally at night, when flights cost $869 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 $884.

How long is the flight to Ontario?

The duration of your flight to Ontario depends on your departure and arrival airports. Obviously any flights that include a layover will also be longer. The most popular routes to Ontario on KAYAK are from Ho Chi Minh City, which takes 17h 30m, Hanoi, which takes 17h 45m, Nha Trang, which takes 22h 20m, and Da Nang, which takes 25h 10m.

How many direct flights to Ontario are there each day?

There are around 90 direct flights from within Vietnam to Ontario every day. Most flights depart in the morning, with 11:00 am the most common departure time and 39% of flights departing in the morning.

How many direct flights to Ontario are there each week?

Each week there are around 626 direct flights from within Vietnam to Ontario. The most common day for departures is Friday, with 15% of flights taking off on this day.

Good to know

Low season

February

High season

September

Cheapest flight

$464
Best time to beat the crowds with an average 6% drop in price.
Most popular time to fly and prices are also 15% lower on average.
Flight from Hanoi to Ontario

FAQs - booking Ontario flights

  • How far is Ontario from central Ontario?

    There are 3 miles between Ontario city center and Ontario.

  • What is the name of Ontario’s airport?

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

  • 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.

  • Which airline offers the most flights to Ontario?

    Of the 8 airlines that fly to Ontario, Southwest offers the most flights, with around 222 per week, followed by Frontier with 94 flights per week.

See more FAQs

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.

Prefer to fly non-stop to Ontario?

Find which airlines fly direct to Ontario, which days they fly and book direct flights.

Nonstop departures

Vietnam to Ontario

Monday

Aeromexico, Air Canada, Air France, +23 more

Aeromexico, Air Canada, +24 more

Tuesday

Aeromexico, Air Canada, Air France, +24 more

Aeromexico, Air Canada, +25 more

Wednesday

Aeromexico, Air Canada, Air France, +23 more

Aeromexico, Air Canada, +24 more

Thursday

Aeromexico, Air Canada, Air France, +24 more

Aeromexico, Air Canada, +25 more

Friday

Aeromexico, Air Canada, Air France, +22 more

Aeromexico, Air Canada, +23 more

Saturday

Aeromexico, Air Canada, Air France, +23 more

Aeromexico, Air Canada, +24 more

Sunday

Aeromexico, Air Canada, Air France, +24 more

Aeromexico, Air Canada, +25 more

See more direct flights

Nonstop returns

Ontario to Vietnam

Monday

Aeromexico, Air Canada, Air France, +23 more

Aeromexico, Air Canada, +24 more

Tuesday

Aeromexico, Air Canada, Air France, +24 more

Aeromexico, Air Canada, +25 more

Wednesday

Aeromexico, Air Canada, Air France, +23 more

Aeromexico, Air Canada, +24 more

Thursday

Aeromexico, Air Canada, Air France, +24 more

Aeromexico, Air Canada, +25 more

Friday

Aeromexico, Air Canada, Air France, +22 more

Aeromexico, Air Canada, +23 more

Saturday

Aeromexico, Air Canada, Air France, +23 more

Aeromexico, Air Canada, +24 more

Sunday

Aeromexico, Air Canada, Air France, +24 more

Aeromexico, Air Canada, +25 more

See more direct flights
See more direct flights

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.
8.2
China AirlinesOverall score based on 896 reviews
7.8Food
8.0Comfort
8.6Crew
8.3Boarding
8.0Entertainment
Airline reviews

Comfort was left wanting due to such a long flight, made the wife and I wish we could upgrade the seats to Business class or First Class, but did not have that option. Food was good but had very limited options and I have a dietary restriction which was difficult for the staff to accommodate since everything provided came with cheese on it. (Cheese could potentially kill me) Did not have an option to inform the staff until we were already in the air about the restriction and was not provided another option before flight departed.

8.0 ExcellentMichell, Feb 2024TPE - LAX
Read more about China Airlines reviews

Comfort was left wanting due to such a long flight, made the wife and I wish we could upgrade the seats to Business class or First Class, but did not have that option. Food was good but had very limited options and I have a dietary restriction which was difficult for the staff to accommodate since everything provided came with cheese on it. (Cheese could potentially kill me) Did not have an option to inform the staff until we were already in the air about the restriction and was not provided another option before flight departed.

The plane was uncomfortable. I paid extra for more legroom but the seat was still uncomfortable. Other seats on the same exact row didn’t have to pay extra but still have extra legroom. I didn’t understand why I needed to pay $170 for. It was Iike China airline just wants to make money off their passengers. It was unfair.

It was a 2 hour flight to Taiwan. Lunch was served. China Airlines goes above and beyond for their passengers.

Great flight, although I flew out of ONT and that is where my car is, lol

It felt like a new plane. Decent leg room in economy, food was fine, and the plane didn’t feel super dry and uncomfortable.

Better training to have qualified crews and services. My flight was from around 12 midnight Friday Taipei to Vancouver. After two hours first meal (2:00 Am -8:00 ) no crew available for even asking for some water. I was even willing to pay for water. For breakfast after 8 hours the only drink was tea and coffee no water or juice.

Free Wi-Fi could have been better in the Airport.

Ask flight attendant for water during flight and she was a little rude get the water.

Baggage made it successfully to destination despite short layover. Appreciate that.

Staff were good and nice. There should me 3 meals instead of only 2 and snacks.

Book cheap flights from Vietnam to Ontario

Recent round-trip flight deals

 
These are the cheapest round-trip flights to Ontario found on KAYAK in the last 72 hours.
6/23Sun
1 stopChina Airlines
21h 15mSGN-ONT
11/19Tue
1 stopChina Airlines
20h 15mONT-SGN
$887
6/23Sun
1 stopChina Airlines
21h 15mSGN-ONT
11/23Sat
1 stopChina Airlines
20h 15mONT-SGN
$918
7/14Sun
2 stops
32h 54mSGN-ONT
7/29Mon
2 stops
31h 13mONT-SGN
$971
6/13Thu
2 stops
43h 18mSGN-ONT
7/11Thu
2 stops
23h 53mONT-SGN
$1,061
6/23Sun
2 stopsUnited Airlines
37h 42mSGN-ONT
7/8Mon
2 stopsUnited Airlines
41h 40mONT-SGN
$1,068
7/3Wed
2 stopsUnited Airlines
51h 23mSGN-ONT
7/24Wed
2 stopsUnited Airlines
36h 50mONT-SGN
$1,090
8/16Fri
2 stopsAmerican Airlines
29h 58mSGN-ONT
10/29Tue
2 stopsAmerican Airlines
39h 51mONT-SGN
$1,435
7/2Tue
2 stopsAmerican Airlines
28h 09mSGN-ONT
8/8Thu
2 stopsAmerican Airlines
25h 45mONT-SGN
$1,497
8/9Fri
2 stopsQatar Airways
43h 35mHAN-ONT
9/29Sun
2 stopsQatar Airways
42h 00mONT-HAN
$1,994
6/28Fri
2 stopsQatar Airways
29h 55mHAN-ONT
7/6Sat
2 stopsQatar Airways
31h 10mONT-HAN
$2,832

Search by stops

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Recent one-way flight deals

 
Only flying one-way? Below are some of the best deals for one-way flights to Ontario found on KAYAK in the last 72 hours.
6/19Wed
2 stops
27h 30mHAN-ONT
$464
6/2Sun
2 stopsUnited Airlines
37h 42mSGN-ONT
$537
10/1Tue
1 stopChina Airlines
20h 30mHAN-ONT
$554
6/2Sun
1 stopChina Airlines
21h 15mSGN-ONT
$554
11/17Sun
2 stopsJapan Airlines
32h 40mHAN-ONT
$705
7/3Wed
2 stopsAmerican Airlines
33h 37mHAN-ONT
$769
6/26Wed
2 stopsAmerican Airlines
38h 39mHAN-ONT
$776
7/15Mon
2 stopsJapan Airlines
21h 29mSGN-ONT
$887
7/2Tue
2 stopsQatar Airways
29h 55mHAN-ONT
$1,095
10/5Sat
2 stopsQatar Airways
30h 14mHAN-ONT
$1,794

Search by stops

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Search by price

Last minute flights to Ontario

Last minute flight, train and bus deals

 
These last-minute flight deals are the cheapest flights found on KAYAK in the last 72 hours for flights to Ontario that are departing in the next 10 days.
6/2Sun
multi-stopChina Airlines
21h 15mSGN-ONT
6/17Mon
multi-stopChina Airlines
19h 40mONT-SGN
$1,435

Search by stops

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Search by price

Flights to Ontario

Destination:

Ontario (ONT)United States

Return flight deals:

Ontario - Vietnam

Cabin classes: