ONT - HAN

$340 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 4/18. 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

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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41,299,237 searches in the past 7 days on KAYAK

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Everything you should know

Cheapest round-trip
$639
Korean Air
Wed 4/8Mon 4/13
ONT - HAN • 2 stops
Cheapest one-way
$340
Typical prices: $417-$501
Korean Air
Sat 4/18
ONT - HAN • 2 stops
Top airlines
Korean Air
Cheapest • from $639 (round-trip)
China Airlines
Best reviews • 8.2 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
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We hope you love your trip to Hanoi!
Flight Deals
Booking Insights
Flight 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

Wed, Apr 8 - Mon, Apr 13
Korean Air Logo
6:00 am - 10:40 am
ONT
-
HAN
38h 40m2 stops
Korean Air Logo
12:00 pm - 10:40 pm
HAN
-
ONT
48h 40m2 stops
$639Korean Air
Sun, Apr 5 - Tue, Apr 14
Korean Air Logo
6:00 am - 9:35 pm
ONT
-
HAN
25h 35m2 stops
Korean Air Logo
12:00 pm - 5:16 pm
HAN
-
ONT
43h 16m2 stops
$689Korean Air
Fri, May 8 - Sun, May 31
China Airlines Logo
12:10 am - 4:50 pm
ONT
-
HAN
26h 40m1 stop
China Airlines Logo
11:35 am - 6:00 pm
HAN
-
ONT
20h 25m1 stop
$727China Airlines
Wed, Mar 11 - Thu, Mar 26
China Airlines Logo
11:50 pm - 4:30 pm
ONT
-
HAN
26h 40m1 stop
China Airlines Logo
11:20 am - 5:50 pm
HAN
-
ONT
20h 30m1 stop
$738China Airlines
Tue, Mar 10 - Tue, Apr 7
China Airlines Logo
11:50 pm - 10:20 am
ONT
-
HAN
20h 30m1 stop
China Airlines Logo
11:35 am - 6:00 pm
HAN
-
ONT
20h 25m1 stop
$742China Airlines
Sun, Apr 5 - Thu, Apr 16
China Airlines Logo
12:10 am - 4:50 pm
ONT
-
HAN
26h 40m1 stop
China Airlines Logo
5:50 pm - 6:00 pm
HAN
-
ONT
38h 10m1 stop
$752China Airlines
Sat, Apr 4 - Tue, Apr 14
China Airlines Logo
12:10 am - 4:50 pm
ONT
-
HAN
26h 40m1 stop
China Airlines Logo
11:35 am - 6:00 pm
HAN
-
ONT
20h 25m1 stop
$764China Airlines
Sun, Apr 26 - Fri, May 1
China Airlines Logo
12:10 am - 4:50 pm
ONT
-
HAN
26h 40m1 stop
China Airlines Logo
5:50 pm - 6:00 pm
HAN
-
ONT
38h 10m1 stop
$765China Airlines
Sat, Jan 24 - Sun, Feb 1
China Airlines Logo
10:50 pm - 4:30 pm
ONT
-
HAN
26h 40m1 stop
China Airlines Logo
11:35 am - 4:50 pm
HAN
-
ONT
20h 15m1 stop
$785China Airlines
Sat, Jan 31 - Sun, Feb 15
China Airlines Logo
10:50 pm - 10:35 am
ONT
-
HAN
20h 45m1 stop
China Airlines Logo
11:35 am - 4:50 pm
HAN
-
ONT
20h 15m1 stop
$789China Airlines
Booking Insights

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.

Which airlines provide the cheapest flights from Ontario to Hanoi?

The cheapest round-trip price for the route for each airline clicked by KAYAK users in the last 72 hours.

In the past 3 days, the cheapest round-trip tickets from Ontario to Hanoi were found on Korean Air ($639) and China Airlines ($738).

Which airlines fly non-stop between Ontario and Hanoi?

Airline and price data is aggregated from results in KAYAK’s search results from the last 2 weeks for round-trip flights from Ontario to Hanoi.

There is just one airline that flies from Ontario to Hanoi direct and that is China Airlines. The best round-trip deal found from China Airlines for the route is $719.

Find deals

Good to know

Low seasonOctober
Cheapest flight$340
Best time to beat the crowds with an average 23% drop in price.
Most popular time to fly and prices are also 17% 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 $340 for a one-way ticket and $639 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 is the only airline alliance operating flights between Ontario and Hanoi.

  • 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.
8.2
China AirlinesOverall score based on 788 reviews
7.8Food
8.5Crew
8.3Boarding
8.0Comfort
8.0Entertainment
Airline reviews

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.

2.0 MediocreAnonymous, Dec 2025
TPE - SFO
Read more China Airlines reviews

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.

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.

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.

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

Information on your arrival and departure airports

Ontario (ONT)
Hanoi (HAN)