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Hanoi

$368+ Cheap flights from Ontario (ONT) to Hanoi (HAN)

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 11/18. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — HAN
Nov 27 — Dec 41
Thu 11/27
Thu 12/4
1 adult, Economy
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Find flight deals from Ontario to Hanoi

Cheapest flights from Ontario to Hanoi
Explore the most affordable flight options available from Ontario to Hanoi. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 28, 2025.

This Korean Air deal was found by Cheapflights users on 10/28. 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 Korean Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/176:45 amONT - HAN
2 stops24h 00mKorean Air
Mon 11/2411:05 pmHAN - ONT
2 stops38h 50mKorean Air
Deal found 10/28$716
This FlightHub deal was found by Cheapflights users on 10/27. 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.
Tue 10/2811:50 pmONT - HAN
1 stop26h 40mChina Airlines
Tue 11/411:35 amHAN - ONT
1 stop20h 15mChina Airlines
Deal found 10/27$722
This Delta deal was found by Cheapflights users on 10/28. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/196:45 amONT - HAN
2 stops24h 00mDelta
Wed 11/2611:05 pmHAN - ONT
2 stops34h 13mDelta
Deal found 10/28$724
This oojo deal was found by Cheapflights users on 10/26. 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.
Mon 11/1010:50 pmONT - HAN
1 stop26h 40mChina Airlines
Wed 11/1911:35 amHAN - ONT
1 stop20h 15mChina Airlines
Deal found 10/26$725
This oojo deal was found by Cheapflights users on 10/25. 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 11/1110:50 pmONT - HAN
1 stop26h 40mChina Airlines
Thu 11/2711:35 amHAN - ONT
1 stop20h 15mChina Airlines
Deal found 10/25$729
This IEagle deal was found by Cheapflights users on 10/25. 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 IEagle is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/2710:50 pmONT - HAN
1 stop20h 45mChina Airlines
Tue 12/1611:35 amHAN - ONT
1 stop20h 15mChina Airlines
Deal found 10/25$736
This FlightHub deal was found by Cheapflights users on 10/28. 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 11/1710:50 pmONT - HAN
1 stop20h 45mChina Airlines
Tue 11/2511:35 amHAN - ONT
1 stop20h 15mChina Airlines
Deal found 10/28$755
This China Airlines deal was found by Cheapflights users on 10/28. 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 11/1510:50 pmONT - HAN
1 stop20h 45mChina Airlines
Wed 11/2611:35 amHAN - ONT
1 stop20h 15mChina Airlines
Deal found 10/28$765
This FlightHub deal was found by Cheapflights users on 10/28. 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.
Sun 11/1610:50 pmONT - HAN
1 stop26h 40mChina Airlines
Thu 11/2711:35 amHAN - ONT
1 stop20h 15mChina Airlines
Deal found 10/28$766
This Flightnetwork deal was found by Cheapflights users on 10/28. 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 Flightnetwork is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/2810:50 pmONT - HAN
1 stop20h 45mChina Airlines
Mon 12/811:35 amHAN - ONT
1 stop20h 15mChina Airlines
Deal found 10/28$771
This lastminute.com deal was found by Cheapflights users on 10/27. 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 lastminute.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/3010:50 pmONT - HAN
1 stop20h 45mChina Airlines
Mon 12/1511:35 amHAN - ONT
1 stop20h 15mChina Airlines
Deal found 10/27$776
This China Airlines deal was found by Cheapflights users on 10/26. 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 10/2511:50 pmONT - HAN
1 stop26h 40mChina Airlines
Tue 11/2511:35 amHAN - ONT
1 stop20h 15mChina Airlines
Deal found 10/26$785

Cheap flight deals from Ontario to Hanoi

Discover tips and strategies to find the most affordable flight options for your journey from Ontario (ONT) to Hanoi (HAN). 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 October 28, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$696
(FlightHub)

One-way from

$368
(Delta)

Popular in

December

Cheapest in

October

Average price

$802
Provider with most accurate pricing for Ontario-Hanoi Noibai flight deals.
Search Deals
Provider most trusted by Cheapflights users for Ontario-Hanoi Noibai flights.
Search Deals
From Ontario to Hanoi Noibai
Search Deals
One-way flight from Ontario to Hanoi Noibai
Search Deals
Highest demand for flights based on searches. 12% potential increase in price ($145 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 7% potential price decrease ($72 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in October 2025
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Ontario to Hanoi 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 October 28, 2025.
Use the filters below to find and compare flights from Ontario to Hanoi that are best for you.

Fly from

Ontario

Fly to

Hanoi

Route

Depart

Return

Price

OntarioHanoi

ONT - HAN

ONTHAN

Ontario

Sun 3/29

6:00 am-9:35 pm

2 stops25h 35m

Hanoi Noibai

Mon 4/13

11:10 pm-10:40 pm

2 stops37h 30m

$710

OntarioHanoi

ONT - HAN

ONTHAN

Ontario

Wed 4/1

6:45 am-9:35 pm

2 stops24h 50m

Hanoi Noibai

Wed 4/15

12:00 pm-5:16 pm

2 stops43h 16m

$716

OntarioHanoi

ONT - HAN

ONTHAN

Ontario

Sun 3/29

6:45 am-9:35 pm

2 stops24h 50m

Hanoi Noibai

Sun 4/12

12:00 pm-10:40 pm

2 stops48h 40m

$716

OntarioHanoi

ONT - HAN

ONTHAN

Ontario

Fri 3/6

10:50 pm-10:20 am

1 stop20h 30m

Hanoi Noibai

Sat 3/14

11:20 am-5:50 pm

1 stop20h 30m

$737

OntarioHanoi

ONT - HAN

ONTHAN

Ontario

Sun 4/12

12:10 am-10:35 am

1 stop20h 25m

Hanoi Noibai

Fri 4/24

11:35 am-6:00 pm

1 stop20h 25m

$737

OntarioHanoi

ONT - HAN

ONTHAN

Ontario

Sat 3/28

12:10 am-4:50 pm

1 stop26h 40m

Hanoi Noibai

Sun 4/12

5:50 pm-6:00 pm

1 stop38h 10m

$737

OntarioHanoi

ONT - HAN

ONTHAN

Ontario

Sat 4/11

12:10 am-10:35 am

1 stop20h 25m

Hanoi Noibai

Fri 4/24

11:35 am-6:00 pm

1 stop20h 25m

$737

OntarioHanoi

ONT - HAN

ONTHAN

Ontario

Sat 4/4

12:10 am-10:35 am

1 stop20h 25m

Hanoi Noibai

Sat 4/18

11:35 am-6:00 pm

1 stop20h 25m

$737

OntarioHanoi

ONT - HAN

ONTHAN

Ontario

Fri 3/13

11:50 pm-10:20 am

1 stop20h 30m

Hanoi Noibai

Fri 3/27

11:20 am-5:50 pm

1 stop20h 30m

$737

OntarioHanoi

ONT - HAN

ONTHAN

Ontario

Fri 3/6

10:50 pm-10:20 am

1 stop20h 30m

Hanoi Noibai

Mon 3/9

11:20 am-5:50 pm

1 stop20h 30m

$737

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/28

Showing 1-10 of 24 results
1
2
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Compare providers for flights from Ontario to Hanoi

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Ontario to Hanoi in October.
ProviderPrice AccuracyTrust Score*
FlightHubPrice Accuracy3 starsTrust Score*1 star
eDreamsPrice Accuracy3 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Ontario-Hanoi flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Ontario-Hanoi flight deals on Cheapflights vs. eDreams >95% of the time. Price accuracy is based on data collected from Ontario-Hanoi flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Ontario-Hanoi flights, Cheapflights users trust eDreams the most. eDreams has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Ontario-Hanoi flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Ontario to Hanoi

Have a flexible travel schedule? Discover the best time to fly to Hanoi from Ontario 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 Ontario to Hanoi

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

Currently, April is the cheapest month in which you can book a flight from Ontario to Hanoi (average of $304). Flying from Ontario to Hanoi in July is currently the most expensive (average of $869). 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.

How much does it cost to fly round-trip from Ontario to Hanoi?

Reviews of airlines servicing Hanoi

Get insights into the airlines that provide service to Hanoi. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Hanoi. Reviews last updated October 28, 2025.
Read through reviews of airlines operating flights from Ontario to Hanoi, such as China Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
China Airlines
8.3
Very good
776 reviews

Crew

8.5

Entertainment

8.0

Overall

8.3

Boarding

8.3

Comfort

8.0

Food

7.8

Reviews

1 / 20
2.0
Mediocre

Anonymous,Jul 2025

SFO - TPE

Bad News - The flight was delayed and it was due to ground crew issues but the staff were moving things along. The seat size was cramp and i am a lean person. The attendant kept asking me in Chinese when i already stated i don’t speak the language. The food was bad. The taste, aroma, consistent of mush. Even a cafeteria lady can cook better food. Kudos - the pilot made up for lost time to the best of his ability. He made sure that the flight was smooth even though there was occasional turbulence. The landing was great.
China Airlines
8.3
Very good
776 reviews
China Airlines
8.3
Very good
776 reviews

Crew

8.5

Entertainment

8.0

Overall

8.3

Boarding

8.3

Comfort

8.0

Food

7.8

Reviews

1 / 20
2.0
Mediocre

Anonymous,Jul 2025

SFO - TPE

Bad News - The flight was delayed and it was due to ground crew issues but the staff were moving things along. The seat size was cramp and i am a lean person. The attendant kept asking me in Chinese when i already stated i don’t speak the language. The food was bad. The taste, aroma, consistent of mush. Even a cafeteria lady can cook better food. Kudos - the pilot made up for lost time to the best of his ability. He made sure that the flight was smooth even though there was occasional turbulence. The landing was great.

Related info for your journey

Find useful and relevant information for your journey from Ontario to Hanoi. 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 Ontario to Hanoi?

    Delta, Korean Air, and China Airlines can get you from Ontario to Hanoi in just under 20h 30m. Your travel time can differ by up to 5h 05m. The distance from Ontario to Hanoi is about 7664 mi. This flight may include one or multiple stops.

  • What is the cheapest airline to fly from Ontario to Hanoi round-trip?

    Flying on China Airlines is currently your cheapest option to Hanoi, with prices starting at $738. This flight start at 29% lower than the current average price 3 months from now.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Ontario to Hanoi 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 Ontario to Hanoi?

    Currently, April is the cheapest month in which you can book a flight from Ontario to Hanoi (average of $304). Flying from Ontario to Hanoi in July is currently the most expensive (average of $869). 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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Top airline flying from Ontario to Hanoi

Discover the top airline that operate flights from Ontario to Hanoi. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated October 28, 2025.
AirlineCheapestAverageFlexibilityOn-time
China AirlinesCheapest$738Average$864FlexibilityNo cancel feeOn-time70%

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