ONT - HAN

$312 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 4/20. 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
Travelers love KAYAK
41.299.237 searches in the past 7 days on KAYAK

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Everything you should know

Cheapest round-trip
$584
Typical prices: $780-$900
Korean Air
Mon 4/20Wed 5/6
ONT - HAN • 2 stops
Cheapest one-way
$312
Typical prices: $417-$501
Delta
Mon 4/20
ONT - HAN • 2 stops
Top airlines
Korean Air
Cheapest • from $584 (round-trip)
China Airlines
Best reviews • 8.3 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Nonstop flights
Not available
There are currently no direct flights between Ontario and Hanoi. You'll need at least 1 connection.
Insights
Insights
Insights
Insights
Top layover airports
Hong Kong (HKG)
Cheapest • Avg $732 (round-trip)
Taipei City (TPE)
Shortest trip • 21h 03m (one-way)
Insights
Insights
Insights
Insights
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KAYAK searches 100s of sites at once to find you the best travel deals.
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

Mon, Apr 20 - Wed, May 6
Korean Air Logo
7:00 am - 9:35 pm
ONT
-
HAN
24h 35m
2 stops
Korean Air Logo
11:10 pm - 5:10 pm
HAN
-
ONT
32h 00m
2 stops
$584Korean Air
Mon, Apr 20 - Wed, May 6
Korean Air Logo
7:00 am - 9:35 pm
ONT
-
HAN
24h 35m
2 stops
Korean Air Logo
12:05 pm - 5:10 pm
HAN
-
ONT
43h 05m
2 stops
$631Korean Air
Mon, Sep 7 - Tue, Sep 15
Delta Logo
7:00 am - 9:35 pm
ONT
-
HAN
24h 35m
2 stops
Delta Logo
11:10 pm - 10:40 pm
HAN
-
ONT
37h 30m
2 stops
$641Delta
Wed, Apr 22 - Wed, May 6
Korean Air Logo
7:00 am - 9:35 pm
ONT
-
HAN
24h 35m
2 stops
Korean Air Logo
11:10 pm - 5:10 pm
HAN
-
ONT
32h 00m
2 stops
$646Korean Air
Sun, Sep 13 - Wed, Sep 16
Delta Logo
1:00 pm - 9:35 pm
ONT
-
HAN
42h 35m
2 stops
Delta Logo
11:10 pm - 11:44 pm
HAN
-
ONT
38h 34m
2 stops
$647Delta
Mon, Apr 20 - Thu, May 7
Delta Logo
7:00 am - 9:35 pm
ONT
-
HAN
24h 35m
2 stops
Delta Logo
11:10 pm - 5:10 pm
HAN
-
ONT
32h 00m
2 stops
$666Delta
Mon, Apr 20 - Sun, May 17
Delta Logo
7:00 am - 9:35 pm
ONT
-
HAN
24h 35m
2 stops
Delta Logo
11:10 pm - 5:10 pm
HAN
-
ONT
32h 00m
2 stops
$676Delta
Fri, Sep 11 - Tue, Sep 15
Delta Logo
6:00 am - 9:35 pm
ONT
-
HAN
25h 35m
2 stops
Delta Logo
11:10 pm - 10:40 pm
HAN
-
ONT
37h 30m
2 stops
$681Delta
Wed, Sep 9 - Sat, Sep 19
Korean Air Logo
7:00 am - 9:35 pm
ONT
-
HAN
24h 35m
2 stops
Korean Air Logo
12:05 pm - 5:16 pm
HAN
-
ONT
43h 11m
2 stops
$686Korean Air
Mon, Sep 7 - Thu, Sep 17
Delta Logo
6:00 am - 9:35 pm
ONT
-
HAN
25h 35m
2 stops
Delta Logo
11:10 pm - 4:14 pm
HAN
-
ONT
55h 04m
2 stops
$687Delta
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.

How much is a round-trip flight from Ontario to Hanoi?

This analysis is based on the cheapest round-trip price found on KAYAK in the last 12 months by searching for a flight from Ontario to Hanoi departing in April.
Find deals

Good to know

Low seasonMarch
Cheapest flight$312
Best time to beat the crowds with an average 19% drop in price.
Most popular time to fly and prices are also 6% 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 $312 for a one-way ticket and $584 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.
8.3
China AirlinesOverall score based on 814 reviews
8.0Comfort
7.8Food
8.0Entertainment
8.3Boarding
8.5Crew
Airline reviews

The crew was very professional and friendly. Although there was a water leak from panel above, the crew was trying to mitigate the consequence. We are happy with its service and the value offered. We will definitely take China Airlines again.

10.0 ExcellentA, Feb 2026
SIN - TPE
Read more China Airlines reviews

The crew was very professional and friendly. Although there was a water leak from panel above, the crew was trying to mitigate the consequence. We are happy with its service and the value offered. We will definitely take China Airlines again.

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.

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.

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

Information on your arrival and departure airports

Ontario (ONT)
Hanoi (HAN)