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$426+ 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 11/7. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — HAN
May 17 — May 241
Sat 5/17
Sat 5/24
1 adult, Economy
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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 May 12, 2025.

Most accurate provider

AranGrant
3 stars

Most trusted provider

AranGrant
3 stars

Round-trip from

$828
(oojo)

One-way from

$426
(SmartFares)

Popular in

December

Cheapest in

March

Average price

$1,058
Provider with most accurate pricing for Ontario-Hanoi Noibai flight deals.
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Provider most trusted by Cheapflights users for Ontario-Hanoi Noibai flights.
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From Ontario to Hanoi Noibai
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One-way flight from Ontario to Hanoi Noibai
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Highest demand for flights based on searches. 14% potential increase in price ($183 potential increase over avg. RT price).
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Cheapest flight prices on average. 7% potential price decrease ($70 potential savings vs. average RT price).
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Average for round-trip flights in May 2025
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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 May 12, 2025.

This oojo deal was found by Cheapflights users on 5/11. 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 9/811:10 pmONT - HAN
1 stop27h 40mSTARLUX Airlines
Mon 9/1511:10 amHAN - ONT
1 stop19h 55mSTARLUX Airlines
Deal found 5/11$828
This Justfly.com deal was found by Cheapflights users on 5/12. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/317:00 amONT - HAN
2 stops24h 40mKorean Air
Sun 11/911:00 pmHAN - ONT
2 stops33h 17mKorean Air
Deal found 5/12$836
This oojo deal was found by Cheapflights users on 5/11. 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.
Sun 9/712:45 amONT - HAN
1 stop19h 50mChina Airlines
Mon 9/155:50 pmHAN - ONT
1 stop38h 10mChina Airlines
Deal found 5/11$856
This United Airlines deal was found by Cheapflights users on 5/12. 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.
Thu 9/46:00 amONT - HAN
2 stops26h 15mUnited Airlines
Sat 9/2011:35 pmHAN - ONT
2 stops32h 02mUnited Airlines
Deal found 5/12$878
This CheapTickets deal was found by Cheapflights users on 5/11. 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 CheapTickets is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/17:00 amONT - HAN
2 stops24h 35mMultiple Airlines
Tue 9/3011:35 amHAN - ONT
1 stop20h 25mMultiple Airlines
Deal found 5/11$972
This oojo deal was found by Cheapflights users on 5/10. 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 11/511:30 amONT - HAN
2 stops28h 25mQatar Airways
Thu 12/111:40 amHAN - ONT
2 stops35h 57mQatar Airways
Deal found 5/10$1,297
This oojo deal was found by Cheapflights users on 5/10. 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 7/74:00 pmONT - HAN
2 stops29h 05mEVA Air
Tue 8/56:00 pmHAN - ONT
2 stops20h 13mEVA Air
Deal found 5/10$1,544

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 May 12, 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

Mon 9/8

11:10 pm-4:50 pm

1 stop27h 40m

Hanoi Noibai

Mon 9/15

11:10 am-5:05 pm

1 stop19h 55m

$828

OntarioHanoi

ONT - HAN

ONTHAN

Ontario

Fri 10/31

7:00 am-9:40 pm

2 stops24h 40m

Hanoi Noibai

Sun 11/9

11:00 pm-5:17 pm

2 stops33h 17m

$836

OntarioHanoi

ONT - HAN

ONTHAN

Ontario

Sun 9/7

12:45 am-10:35 am

1 stop19h 50m

Hanoi Noibai

Mon 9/15

5:50 pm-6:00 pm

1 stop38h 10m

$856

OntarioHanoi

ONT - HAN

ONTHAN

Ontario

Thu 9/4

6:00 am-10:15 pm

2 stops26h 15m

Hanoi Noibai

Sat 9/20

11:35 pm-5:37 pm

2 stops32h 02m

$878

OntarioHanoi

ONT - HAN

ONTHAN

Ontario

Mon 9/1

7:00 am-9:35 pm

2 stops24h 35m

Hanoi Noibai

Tue 9/30

11:35 am-6:00 pm

1 stop20h 25m

$972

OntarioHanoi

ONT - HAN

ONTHAN

Ontario

Wed 11/5

11:30 am-6:55 am

2 stops28h 25m

Hanoi Noibai

Thu 12/11

1:40 am-10:37 pm

2 stops35h 57m

$1,297

OntarioHanoi

ONT - HAN

ONTHAN

Ontario

Mon 7/7

4:00 pm-11:05 am

2 stops29h 05m

Hanoi Noibai

Tue 8/5

6:00 pm-12:13 am

2 stops20h 13m

$1,544

OntarioHanoi

ONT - HAN

ONTHAN

Ontario

Mon 7/14

12:59 am-9:50 pm

2 stops30h 51m

Hanoi Noibai

Thu 8/14

11:20 pm-12:08 am

2 stops38h 48m

$2,292

OntarioHanoi

ONT - HAN

ONTHAN

Ontario

Fri 11/7

7:00 am-9:40 pm

2 stops23h 40m

$426

OntarioHanoi

ONT - HAN

ONTHAN

Ontario

Sat 8/30

1:42 pm-10:15 pm

2 stops42h 33m

$454

Flights are sorted by cheapest round-trip flights first.

Deals found on 5/11

Showing 1-10 of 16 results
1
2

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 May.
ProviderPrice AccuracyTrust Score*
FlightHubPrice Accuracy3 starsTrust Score*2 stars
AranGrantPrice Accuracy3 starsTrust Score*3 stars
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 AranGrant to be most consistent on Cheapflights vs. AranGrant Users can find the same prices on Ontario-Hanoi flight deals on Cheapflights vs. AranGrant >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 AranGrant the most. AranGrant 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, September is the cheapest month in which you can book a flight from Ontario to Hanoi (average of $975). Flying from Ontario to Hanoi in December is currently the most expensive (average of $1,618). 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.

Rainfall in Hanoi by month

Plan your trip to Hanoi by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Hanoi ranges from 0.6 - 11.7 inches per month. August is typically the wettest month, when rainfall can reach 11.7 in. December is typically the driest time to visit Hanoi when rainfall is around 0.6 in.

Temperature in Hanoi by month

Plan your trip to Hanoi by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Hanoi, use this chart to help with planning. For those seeking warmer temperatures, June is the ideal time of year to visit, when temperatures reach an average of 84.2 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 62.6 F).

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 May 12, 2025.
Get a feel of what it's like to fly with STARLUX Airlines, EVA Air and Korean Air from Ontario to Hanoi by reading reviews from past customers. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
STARLUX Airlines
9.1
Wonderful
168 reviews

Comfort

9.0

Boarding

9.1

Overall

9.1

Crew

9.3

Entertainment

9.0

Food

8.9

Reviews

1 / 6
10.0
Excellent

Anonymous,Apr 2025

KIX - TPE

Very pleasant experience overall, while the main course of the meal could have been better and the movies could have been more recent and with more variety. They offer blindfolds and earplugs, which are a plus.
STARLUX Airlines
9.1
Wonderful
168 reviews
STARLUX Airlines
9.1
Wonderful
168 reviews

Comfort

9.0

Boarding

9.1

Overall

9.1

Crew

9.3

Entertainment

9.0

Food

8.9

Reviews

1 / 6
10.0
Excellent

Anonymous,Apr 2025

KIX - TPE

Very pleasant experience overall, while the main course of the meal could have been better and the movies could have been more recent and with more variety. They offer blindfolds and earplugs, which are a plus.
EVA Air
8.4
Very good
1,192 reviews
STARLUX Airlines
9.1
Wonderful
168 reviews

Comfort

9.0

Boarding

9.1

Overall

9.1

Crew

9.3

Entertainment

9.0

Food

8.9

Reviews

1 / 6
10.0
Excellent

Anonymous,Apr 2025

KIX - TPE

Very pleasant experience overall, while the main course of the meal could have been better and the movies could have been more recent and with more variety. They offer blindfolds and earplugs, which are a plus.
Korean Air
8.4
Very good
1,072 reviews
STARLUX Airlines
9.1
Wonderful
168 reviews

Comfort

9.0

Boarding

9.1

Overall

9.1

Crew

9.3

Entertainment

9.0

Food

8.9

Reviews

1 / 6
10.0
Excellent

Anonymous,Apr 2025

KIX - TPE

Very pleasant experience overall, while the main course of the meal could have been better and the movies could have been more recent and with more variety. They offer blindfolds and earplugs, which are a plus.
Japan Airlines
8.3
Very good
1,472 reviews
STARLUX Airlines
9.1
Wonderful
168 reviews

Comfort

9.0

Boarding

9.1

Overall

9.1

Crew

9.3

Entertainment

9.0

Food

8.9

Reviews

1 / 6
10.0
Excellent

Anonymous,Apr 2025

KIX - TPE

Very pleasant experience overall, while the main course of the meal could have been better and the movies could have been more recent and with more variety. They offer blindfolds and earplugs, which are a plus.
China Airlines
8.3
Very good
732 reviews
STARLUX Airlines
9.1
Wonderful
168 reviews

Comfort

9.0

Boarding

9.1

Overall

9.1

Crew

9.3

Entertainment

9.0

Food

8.9

Reviews

1 / 6
10.0
Excellent

Anonymous,Apr 2025

KIX - TPE

Very pleasant experience overall, while the main course of the meal could have been better and the movies could have been more recent and with more variety. They offer blindfolds and earplugs, which are a plus.

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.

  • What are the cheapest airlines flying from Ontario to Hanoi round-trip?

    Flying on STARLUX Airlines is currently your cheapest option to Hanoi, with prices starting at $828. Additional round-trip tickets that might be worth considering are offered by Korean Air and China Airlines, with the lowest prices starting at $836 and $856, respectively. These flights start at 21% lower than the current average price 3 months from now.

  • What are the cheapest airlines to fly from Ontario to Hanoi one-way?

    $426 is the cheapest one-way deal found within the past few days, from Korean Air. You may also be able to find cheap deals on United Airlines and STARLUX Airlines, with prices starting from $454 and $470, respectively.

  • 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, September is the cheapest month in which you can book a flight from Ontario to Hanoi (average of $975). Flying from Ontario to Hanoi in December is currently the most expensive (average of $1,618). 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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Alternative routes for Ontario to Hanoi

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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 May 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
China AirlinesCheapest$749Average$912FlexibilityNo cancel feeOn-time70%

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