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Ontario

$498+ 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 10/20. Fares are subject to change and may not be available on all flights or dates of travel.
HAN — ONT
Aug 23 — Aug 301
Sat 8/23
Sat 8/30
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 August 18, 2025.

Round-trip from

$811
(FlightHub)

One-way from

$498
(SmartFares)

Popular in

August

Cheapest in

October

Average price

$1,327
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. 13% potential increase in price ($138 potential increase over avg. RT price).
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Cheapest flight prices on average. 5% potential price decrease ($42 potential savings vs. average RT price).
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Average for round-trip flights in August 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 August 18, 2025.

This FlightHub deal was found by Cheapflights users on 8/17. 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 12/2911:30 amHAN - ONT
1 stop20h 00mSTARLUX Airlines
Wed 1/289:45 pmONT - HAN
1 stop21h 45mSTARLUX Airlines
Deal found 8/17$811
This oojo deal was found by Cheapflights users on 8/17. 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.
Sat 12/1311:35 amHAN - ONT
1 stop20h 15mChina Airlines
Wed 12/3110:50 pmONT - HAN
1 stop26h 40mChina Airlines
Deal found 8/17$819
This Trip.com deal was found by Cheapflights users on 8/17. 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 Trip.com 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
Fri 1/29:45 pmONT - HAN
1 stop21h 45mSTARLUX Airlines
Deal found 8/17$844
This China Airlines deal was found by Cheapflights users on 8/17. 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 9/205:50 pmHAN - ONT
1 stop38h 10mChina Airlines
Sun 9/2812:10 amONT - HAN
1 stop26h 40mChina Airlines
Deal found 8/17$856
This oojo deal was found by Cheapflights users on 8/16. 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.
Wed 9/1011:35 amHAN - ONT
1 stop21h 05mChina Airlines
Wed 9/1012:45 amONT - HAN
1 stop26h 05mChina Airlines
Deal found 8/16$890
This China Airlines deal was found by Cheapflights users on 8/17. 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
Sat 1/310:50 pmONT - HAN
1 stop26h 40mChina Airlines
Deal found 8/17$902
This China Airlines deal was found by Cheapflights users on 8/17. 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
Fri 1/210:50 pmONT - HAN
1 stop26h 40mChina Airlines
Deal found 8/17$908
This oojo deal was found by Cheapflights users on 8/17. 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.
Tue 8/1911:35 amHAN - ONT
1 stop21h 05mChina Airlines
Tue 8/1912:45 amONT - HAN
1 stop26h 05mChina Airlines
Deal found 8/17$983
This United Airlines deal was found by Cheapflights users on 8/17. 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.
Sun 8/3111:35 pmHAN - ONT
2 stops32h 02mUnited Airlines
Sun 9/76:50 pmONT - HAN
2 stops37h 25mUnited Airlines
Deal found 8/17$1,006
This Gurufare deal was found by Cheapflights users on 8/17. 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 Gurufare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/1211:30 amHAN - ONT
1 stop20h 00mMultiple Airlines
Fri 1/24:36 pmONT - HAN
2 stops26h 54mMultiple Airlines
Deal found 8/17$1,016
This Gurufare deal was found by Cheapflights users on 8/17. 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 Gurufare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/135:30 pmHAN - ONT
2 stops32h 49mMultiple Airlines
Wed 12/3110:50 pmONT - HAN
1 stop20h 45mMultiple Airlines
Deal found 8/17$1,023

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 August 18, 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

Mon 12/29

11:30 am-4:30 pm

1 stop20h 00m

Ontario

Wed 1/28

9:45 pm-10:30 am

1 stop21h 45m

$811

HanoiOntario

HAN - ONT

HANONT

Hanoi Noibai

Mon 12/29

11:30 am-4:30 pm

1 stop20h 00m

Ontario

Wed 1/21

9:45 pm-10:30 am

1 stop21h 45m

$811

HanoiOntario

HAN - ONT

HANONT

Hanoi Noibai

Sat 12/13

11:35 am-4:50 pm

1 stop20h 15m

Ontario

Wed 12/31

10:50 pm-4:30 pm

1 stop26h 40m

$819

HanoiOntario

HAN - ONT

HANONT

Hanoi Noibai

Sat 12/27

11:35 am-4:50 pm

1 stop20h 15m

Ontario

Wed 1/21

10:50 pm-10:35 am

1 stop20h 45m

$819

HanoiOntario

HAN - ONT

HANONT

Hanoi Noibai

Fri 12/12

11:30 am-4:30 pm

1 stop20h 00m

Ontario

Fri 1/2

9:45 pm-10:30 am

1 stop21h 45m

$844

HanoiOntario

HAN - ONT

HANONT

Hanoi Noibai

Sat 9/20

5:50 pm-6:00 pm

1 stop38h 10m

Ontario

Sun 9/28

12:10 am-4:50 pm

1 stop26h 40m

$856

HanoiOntario

HAN - ONT

HANONT

Hanoi Noibai

Wed 9/10

11:35 am-6:40 pm

1 stop21h 05m

Ontario

Wed 9/10

12:45 am-4:50 pm

1 stop26h 05m

$890

HanoiOntario

HAN - ONT

HANONT

Hanoi Noibai

Sat 12/13

11:35 am-4:50 pm

1 stop20h 15m

Ontario

Sat 1/3

10:50 pm-4:30 pm

1 stop26h 40m

$902

HanoiOntario

HAN - ONT

HANONT

Hanoi Noibai

Sat 12/13

11:35 am-4:50 pm

1 stop20h 15m

Ontario

Fri 1/2

10:50 pm-4:30 pm

1 stop26h 40m

$908

HanoiOntario

HAN - ONT

HANONT

Hanoi Noibai

Mon 12/29

6:00 am-4:50 pm

2 stops25h 50m

Ontario

Wed 1/21

10:50 pm-10:35 am

1 stop20h 45m

$993

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/16

Showing 1-10 of 21 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.

  • 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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