ONT - HAN

$368 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 11/18. 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
Travelers love KAYAK
41,299,237 searches in the past 7 days on KAYAK

Save 23% or moreCompare multiple travel sites with one search.

Track pricesNot ready to book? Create a price alert for when prices drop.

Bundle and saveSave money when you bundle your flight + hotel.

Filter your dealsChoose cabin class, free Wi-Fi and more.

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, Jan 19 - Tue, Mar 31
China Airlines Logo
10:50 pm - 10:35 amONT-HAN
20h 45m1 stop
China Airlines Logo
11:35 am - 6:00 pmHAN-ONT
20h 25m1 stop
$696China Airlines
Find Deal
Thu, Mar 5 - Sat, Mar 14
China Airlines Logo
10:50 pm - 10:20 amONT-HAN
20h 30m1 stop
China Airlines Logo
11:20 am - 5:50 pmHAN-ONT
20h 30m1 stop
$697China Airlines
Find Deal
Wed, Nov 19 - Mon, Nov 24
Delta Logo
6:45 am - 9:45 pmONT-HAN
24h 00m2 stops
Delta Logo
12:20 pm - 10:55 pmHAN-ONT
25h 35m2 stops
$710Delta
Find Deal
Mon, Nov 17 - Tue, Nov 25
Korean Air Logo
6:45 am - 9:45 pmONT-HAN
24h 00m2 stops
Korean Air Logo
11:05 pm - 10:55 pmHAN-ONT
38h 50m2 stops
$716Korean Air
Find Deal
Mon, Jan 12 - Thu, Jan 22
China Airlines Logo
10:50 pm - 10:35 amONT-HAN
20h 45m1 stop
China Airlines Logo
11:35 am - 4:50 pmHAN-ONT
20h 15m1 stop
$719China Airlines
Find Deal
Mon, Nov 17 - Sun, Nov 23
Korean Air Logo
6:45 am - 9:45 pmONT-HAN
24h 00m2 stops
Korean Air Logo
11:05 pm - 10:55 pmHAN-ONT
38h 50m2 stops
$722Korean Air
Find Deal
Wed, Nov 19 - Thu, Nov 27
Delta Logo
6:45 am - 9:45 pmONT-HAN
24h 00m2 stops
Delta Logo
12:20 pm - 6:18 pmHAN-ONT
20h 58m2 stops
$724Delta
Find Deal
Tue, Jan 13 - Tue, Jan 20
Multiple Airlines Logo
7:30 am - 9:45 pmONT-HAN
23h 15m2 stops
Multiple Airlines Logo
11:05 pm - 1:56 pmHAN-ONT
29h 51m2 stops
$865Multiple Airlines
Find Deal
Fri, Nov 28 - Sun, Dec 7
United Airlines Logo
6:00 am - 11:05 pmONT-HAN
26h 05m2 stops
United Airlines Logo
12:25 am - 5:37 pmHAN-ONT
32h 12m2 stops
$916United Airlines
Find Deal
Fri, Jan 9 - Thu, Jan 22
United Airlines Logo
6:00 am - 10:25 pmONT-HAN
25h 25m2 stops
United Airlines Logo
12:25 am - 12:17 pmHAN-ONT
26h 52m2 stops
$926United Airlines
Find Deal

Everything you should know

Top airlines
China Airlines
Cheapest • from $696 (round-trip)
China Airlines
Best reviews • 8.3 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
When to travel
October
Cheapest • 23% price drop
March
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
Cheapest round-trip
$696
Overall average: $883
China Airlines
Mon 1/19Tue 3/31
ONT - HAN • 1 stop
Cheapest one-way
$368
Delta
Tue 11/18
ONT - HAN • 2 stops
Start a new search
KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to Hanoi!
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.

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 October, where tickets cost $802 (return) on average. On the other hand, the most expensive months are December and May, where the average cost of round-trip tickets is $1,820 and $1,505 respectively.

Find deals

Good to know

Low seasonJuly
Cheapest flight$368
Best time to beat the crowds with an average 8% drop in price.
Most popular time to fly and prices are also 18% 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 $368 for a one-way ticket and $696 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 776 reviews
8.3Boarding
8.0Entertainment
8.5Crew
8.0Comfort
7.8Food
Airline reviews

Hour late but understandable under the conditions. Taoyuan airport could have clearer signs language wise and more staff to help direct people.

10.0 ExcellentLong, Oct 2025TPE - SGN
Read more China Airlines reviews

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.

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.

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

Information on your arrival and departure airports

Ontario (ONT)
Hanoi (HAN)

Not what you’re looking for? Find thousands of other hotels, flights, car rentals and package deals with KAYAK.