ONT - HAN

$365 Find Cheap Flights from Ontario to Hanoi

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 Hanoi departing on 10/28. 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 Hanoi

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Ontario to Hanoi, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Ontario to Hanoi, as well as popular online travel agencies
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Flights Deals

Cheap Flights from Ontario to Hanoi (ONT-HAN)

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

Thu, Sep 25 - Fri, Oct 17
Delta Logo
6:45 am - 9:35 pmONT-HAN
24h 50m2 stops
Delta Logo
11:10 pm - 10:42 pmHAN-ONT
37h 32m2 stops
$761Delta
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Wed, Nov 5 - Fri, Nov 14
Korean Air Logo
6:45 am - 11:10 amONT-HAN
37h 25m2 stops
Korean Air Logo
12:20 pm - 5:17 pmHAN-ONT
43h 57m2 stops
$772Korean Air
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Tue, Nov 4 - Tue, Nov 11
China Airlines Logo
10:45 pm - 4:35 pmONT-HAN
26h 50m1 stop
China Airlines Logo
11:35 am - 4:50 pmHAN-ONT
20h 15m1 stop
$805China Airlines
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Mon, Sep 29 - Fri, Oct 17
STARLUX Airlines Logo
11:10 pm - 4:50 pmONT-HAN
27h 40m1 stop
STARLUX Airlines Logo
11:10 am - 5:05 pmHAN-ONT
19h 55m1 stop
$814STARLUX Airlines
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Wed, Nov 5 - Fri, Nov 14
STARLUX Airlines Logo
9:45 pm - 10:30 amONT-HAN
21h 45m1 stop
STARLUX Airlines Logo
11:30 am - 3:50 pmHAN-ONT
19h 20m1 stop
$815STARLUX Airlines
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Sun, Aug 17 - Mon, Sep 8
China Airlines Logo
12:45 am - 4:50 pmONT-HAN
26h 05m1 stop
China Airlines Logo
11:35 am - 6:40 pmHAN-ONT
21h 05m1 stop
$821China Airlines
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Mon, Aug 18 - Mon, Sep 8
United Airlines Logo
6:10 am - 10:15 pmONT-HAN
26h 05m2 stops
United Airlines Logo
11:35 pm - 8:33 pmHAN-ONT
34h 58m2 stops
$828United Airlines
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Sun, Sep 7 - Sun, Sep 28
United Airlines Logo
5:10 am - 10:15 pmONT-HAN
27h 05m2 stops
United Airlines Logo
11:35 pm - 10:42 pmHAN-ONT
37h 07m2 stops
$908United Airlines
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Sun, Sep 14 - Sun, Sep 28
Logo
6:45 am - 1:45 amONT-HAN
29h 00m3 stops
Logo
9:55 pm - 5:17 pmHAN-ONT
33h 22m3 stops
$950
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Mon, Aug 4 - Mon, Aug 18
Logo
6:25 am - 9:35 pmONT-HAN
25h 10m2 stops
Logo
5:50 pm - 6:40 pmHAN-ONT
38h 50m1 stop
$962
Find Deal
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KAYAK's insights & trends for Ontario to Hanoi flights

Get data-powered insights and trends into flights from Ontario to Hanoi 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 Hanoi?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Ontario to Hanoi, 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 Hanoi is September, where tickets cost $849 (return) on average. On the other hand, the most expensive months are December and June, where the average cost of round-trip tickets is $1,786 and $1,555 respectively.

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Good to know

Low seasonJuly
High seasonMarch
Cheapest flight$365
Best time to beat the crowds with an average 12% drop in price.
Most popular time to fly and prices are also 21% lower on average.
Flight from Ontario to Hanoi

When to book flights from Ontario to Hanoi

Are your dates flexible? Find out the best times to travel from Ontario to Hanoi based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from Ontario to Hanoi

  • What is the cheapest flight from Ontario to Hanoi?

    In the last 3 days, the lowest price for a flight from Ontario to Hanoi was $365 for a one-way ticket and $761 for a round-trip.

  • Do I need a passport to fly between Ontario and Hanoi?

    Yes

  • Which aircraft models fly most regularly from Ontario to Hanoi?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from Ontario to Hanoi?

    SkyTeam, Star Alliance, and oneworld are the airline alliances operating flights between Ontario and Hanoi, with SkyTeam being the most commonly used for this route.

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

    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 Hanoi.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Hanoi from 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 from Ontario to Hanoi?

    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 Hanoi with an airline and back to Ontario with another airline. Booking your flights between Ontario and HAN can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Ontario to Hanoi?

    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 Hanoi from Ontario up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top airline flying from Ontario to Hanoi

 
See real verified KAYAK customer reviews for airlines flying from Ontario to Hanoi. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Ontario to Hanoi? 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 742 reviews
8.3Boarding
7.8Food
8.5Crew
8.0Entertainment
8.0Comfort
Airline reviews

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

4.0 OkayAnonymous, Jun 2025SEA - TPE
Read more China Airlines reviews

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

Been flying with China Airline over years many times. Good experience with them, no issues.

China Airlines crews are very excellent doing their job. Very friendly and hardworking. I will always choose China Airlines over and over. Thank you all for making my flight comfortable. God bless to all the staff. :)

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.

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!

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!

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.

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

Information on your arrival and departure airports

Ontario (ONT)
Hanoi (HAN)

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