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Ontario

$514+ Cheap flights from Hanoi (HAN) to Ontario (ONT)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 2/5. Fares are subject to change and may not be available on all flights or dates of travel.
HAN — ONT
Oct 15 — Oct 221
Wed 10/15
Wed 10/22
1 adult, Economy
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Cheap flight deals from Hanoi to Ontario

Discover tips and strategies to find the most affordable flight options for your journey from Hanoi (HAN) to Ontario (ONT). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated September 15, 2025.

Round-trip from

$810
(oojo)

One-way from

$514
(oojo)

Popular in

August

Cheapest in

October

Average price

$812
From Hanoi Noibai to Ontario
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One-way flight from Hanoi Noibai to Ontario
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Highest demand for flights based on searches. 10% potential increase in price ($101 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($23 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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Find flight deals from Hanoi to Ontario

Cheapest flights from Hanoi to Ontario
Explore the most affordable flight options available from Hanoi to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 15, 2025.

This oojo deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/1011:10 amHAN - ONT
1 stop19h 55mSTARLUX Airlines
Mon 10/2011:10 pmONT - HAN
1 stop27h 40mSTARLUX Airlines
Deal found 9/14$810
This FlightHub deal was found by Cheapflights users on 9/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/1511:30 amHAN - ONT
1 stop20h 00mSTARLUX Airlines
Wed 12/319:45 pmONT - HAN
1 stop21h 45mSTARLUX Airlines
Deal found 9/13$811
This FlightHub deal was found by Cheapflights users on 9/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/1311:35 amHAN - ONT
1 stop20h 15mChina Airlines
Wed 12/3110:50 pmONT - HAN
1 stop20h 45mChina Airlines
Deal found 9/13$828
This STARLUX Airlines deal was found by Cheapflights users on 9/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure STARLUX Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/1211:30 amHAN - ONT
1 stop20h 00mSTARLUX Airlines
Wed 12/319:45 pmONT - HAN
1 stop21h 45mSTARLUX Airlines
Deal found 9/13$846
This China Airlines deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure China Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/85:50 pmHAN - ONT
1 stop38h 10mChina Airlines
Sat 10/1812:10 amONT - HAN
1 stop20h 25mChina Airlines
Deal found 9/14$852
This China Airlines deal was found by Cheapflights users on 9/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure China Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/1611:35 amHAN - ONT
1 stop20h 15mChina Airlines
Tue 12/3010:50 pmONT - HAN
1 stop20h 45mChina Airlines
Deal found 9/13$864
This China Airlines deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure China Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/85:50 pmHAN - ONT
1 stop38h 10mChina Airlines
Sun 10/1912:10 amONT - HAN
1 stop26h 40mChina Airlines
Deal found 9/14$875
This China Airlines deal was found by Cheapflights users on 9/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure China Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/1311:35 amHAN - ONT
1 stop20h 15mChina Airlines
Thu 1/110:50 pmONT - HAN
1 stop20h 45mChina Airlines
Deal found 9/13$888
This United Airlines deal was found by Cheapflights users on 9/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/2712:25 amHAN - ONT
2 stops31h 09mUnited Airlines
Tue 11/46:00 amONT - HAN
2 stops26h 05mUnited Airlines
Deal found 9/13$897
This FlightHub deal was found by Cheapflights users on 9/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/1511:30 amHAN - ONT
1 stop20h 00mSTARLUX Airlines
Fri 1/29:45 pmONT - HAN
1 stop21h 45mSTARLUX Airlines
Deal found 9/13$906
This China Airlines deal was found by Cheapflights users on 9/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure China Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/1211:35 amHAN - ONT
1 stop20h 15mChina Airlines
Sat 1/310:50 pmONT - HAN
1 stop20h 45mChina Airlines
Deal found 9/13$910
This China Airlines deal was found by Cheapflights users on 9/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure China Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/1211:35 amHAN - ONT
1 stop20h 15mChina Airlines
Fri 1/210:50 pmONT - HAN
1 stop20h 45mChina Airlines
Deal found 9/13$924

Cheapflights Fare Finder

 
Customize your flight search to find flights from Hanoi to Ontario that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated September 15, 2025.
Use the filters below to find and compare flights from Hanoi to Ontario that are best for you.

Fly from

Hanoi

Fly to

Ontario

Route

Depart

Return

Price

HanoiOntario

HAN - ONT

HANONT

Hanoi Noibai

Wed 10/8

5:50 pm-6:00 pm

1 stop38h 10m

Ontario

Sat 10/18

12:10 am-10:35 am

1 stop20h 25m

$852

HanoiOntario

HAN - ONT

HANONT

Hanoi Noibai

Thu 10/9

5:50 pm-6:00 pm

1 stop38h 10m

Ontario

Sat 10/18

12:10 am-4:50 pm

1 stop26h 40m

$852

HanoiOntario

HAN - ONT

HANONT

Hanoi Noibai

Sun 12/14

11:35 am-4:50 pm

1 stop20h 15m

Ontario

Tue 12/30

10:50 pm-4:30 pm

1 stop26h 40m

$864

HanoiOntario

HAN - ONT

HANONT

Hanoi Noibai

Tue 12/16

11:35 am-4:50 pm

1 stop20h 15m

Ontario

Wed 12/31

10:50 pm-4:30 pm

1 stop26h 40m

$864

HanoiOntario

HAN - ONT

HANONT

Hanoi Noibai

Mon 12/15

11:35 am-4:50 pm

1 stop20h 15m

Ontario

Tue 12/30

10:50 pm-4:30 pm

1 stop26h 40m

$864

HanoiOntario

HAN - ONT

HANONT

Hanoi Noibai

Wed 2/18

11:35 am-4:50 pm

1 stop20h 15m

Ontario

Sun 2/22

10:50 pm-4:30 pm

1 stop26h 40m

$864

HanoiOntario

HAN - ONT

HANONT

Hanoi Noibai

Fri 12/12

11:35 am-4:50 pm

1 stop20h 15m

Ontario

Tue 12/30

10:50 pm-10:35 am

1 stop20h 45m

$864

HanoiOntario

HAN - ONT

HANONT

Hanoi Noibai

Sat 12/13

11:35 am-4:50 pm

1 stop20h 15m

Ontario

Thu 1/1

10:50 pm-10:35 am

1 stop20h 45m

$888

HanoiOntario

HAN - ONT

HANONT

Hanoi Noibai

Sun 12/14

11:35 am-4:50 pm

1 stop20h 15m

Ontario

Thu 1/1

10:50 pm-4:30 pm

1 stop26h 40m

$888

HanoiOntario

HAN - ONT

HANONT

Hanoi Noibai

Mon 10/27

12:25 am-5:34 pm

2 stops31h 09m

Ontario

Tue 11/4

6:00 am-11:05 pm

2 stops26h 05m

$897

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/14

Showing 1-10 of 23 results
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Best time to book a flight from Hanoi to Ontario

Have a flexible travel schedule? Discover the best time to fly to Ontario from Hanoi with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

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

What is the cheapest month to book a flight from Hanoi to Ontario?

Currently, August is the cheapest month in which you can book a flight from Hanoi to Ontario (average of $246). Flying from Hanoi to Ontario in March is currently the most expensive (average of $328). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

Related info for your journey

Find useful and relevant information for your journey from Hanoi to Ontario. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from Hanoi to Ontario?

    There are many flights that can get you from Hanoi to Ontario in 38h 10m. Fly via China Airlines to get the fastest option. Airlines will cover a distance of 7664 mi.

  • Can I find deals for flights from Hanoi to Ontario that include hotel bookings?

    Yes. In addition to deals on Hanoi to Ontario flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Hanoi to Ontario?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Hanoi to Ontario.

  • Can I find deals for business class flights from Hanoi to Ontario?

    Yes. Cheapflights offers flight deals from Hanoi to Ontario by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Hanoi to Ontario?

    Currently, August is the cheapest month in which you can book a flight from Hanoi to Ontario (average of $246). Flying from Hanoi to Ontario in March is currently the most expensive (average of $328). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

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