ONT - HAN

$542 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 8/4. 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
$1,001
Typical prices: $802-$770
Delta
Mon 10/5Sun 10/25
ONT - HAN • 2 stops
Cheapest one-way
$542
Typical prices: $467-$491
Qatar Airways
Tue 8/4
ONT - HAN • 2 stops
Top airlines
Delta
Cheapest • from $1,001 (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
When to travel
June
Cheapest • 100% price drop
January
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
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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, Oct 5 - Sun, Oct 25
Delta Logo
7:00 am - 9:35 pm
ONT
-
HAN
24h 35m
2 stops
Delta Logo
11:05 pm - 5:17 pm
HAN
-
ONT
32h 12m
2 stops
$1,001Delta
Mon, Aug 31 - Sat, Sep 12
China Airlines Logo
12:45 am - 4:50 pm
ONT
-
HAN
26h 05m
1 stop
China Airlines Logo
11:30 am - 6:40 pm
HAN
-
ONT
21h 10m
1 stop
$1,002China Airlines
Mon, Aug 24 - Mon, Aug 31
STARLUX Airlines Logo
11:45 pm - 4:50 pm
ONT
-
HAN
27h 05m
1 stop
STARLUX Airlines Logo
11:10 am - 5:40 pm
HAN
-
ONT
20h 30m
1 stop
$1,007STARLUX Airlines
Mon, Oct 5 - Thu, Oct 22
STARLUX Airlines Logo
11:10 pm - 4:50 pm
ONT
-
HAN
27h 40m
1 stop
STARLUX Airlines Logo
5:50 pm - 5:05 pm
HAN
-
ONT
37h 15m
1 stop
$1,011STARLUX Airlines
Mon, Oct 5 - Tue, Oct 20
Delta Logo
7:00 am - 9:35 pm
ONT
-
HAN
24h 35m
2 stops
Delta Logo
11:10 pm - 5:17 pm
HAN
-
ONT
32h 07m
2 stops
$1,016Delta
Wed, Sep 30 - Thu, Oct 29
STARLUX Airlines Logo
11:10 pm - 10:10 am
ONT
-
HAN
21h 00m
1 stop
STARLUX Airlines Logo
6:25 pm - 4:50 pm
HAN
-
ONT
36h 25m
1 stop
$1,031STARLUX Airlines
Fri, Aug 7 - Sat, Aug 22
China Airlines Logo
12:45 am - 10:30 am
ONT
-
HAN
19h 45m
1 stop
China Airlines Logo
11:30 am - 6:40 pm
HAN
-
ONT
21h 10m
1 stop
$1,034China Airlines
Sun, Oct 11 - Sun, Oct 25
China Airlines Logo
12:10 am - 4:50 pm
ONT
-
HAN
26h 40m
1 stop
China Airlines Logo
11:35 am - 5:50 pm
HAN
-
ONT
20h 15m
1 stop
$1,035China Airlines
Mon, Sep 14 - Thu, Oct 1
China Airlines Logo
12:45 am - 10:30 am
ONT
-
HAN
19h 45m
1 stop
China Airlines Logo
11:30 am - 6:00 pm
HAN
-
ONT
20h 30m
1 stop
$1,039China Airlines
Fri, Aug 7 - Fri, Aug 21
STARLUX Airlines Logo
11:45 pm - 10:10 am
ONT
-
HAN
20h 25m
1 stop
STARLUX Airlines Logo
11:10 am - 5:40 pm
HAN
-
ONT
20h 30m
1 stop
$1,043STARLUX 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.

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 October.

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 June, where tickets cost $0 (return) on average. On the other hand, the most expensive months are December and July, where the average cost of round-trip tickets is $1,986 and $972 respectively.

Find deals

Good to know

Low seasonApril
Cheapest flight$542
Best time to beat the crowds with an average 21% drop in price.
Most popular time to fly and prices are also 10% 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 $542 for a one-way ticket and $1,001 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 819 reviews
8.3Boarding
8.0Entertainment
7.8Food
8.0Comfort
8.5Crew
Airline reviews

The crew are amazing. Very professional, polite, kind, and accommodating.

10.0 ExcellentSatit, Mar 2026
TPE - ONT
Read more China Airlines reviews

The crew are amazing. Very professional, polite, kind, and accommodating.

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.

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

Information on your arrival and departure airports

Ontario (ONT)
Hanoi (HAN)