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$430+ 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 7/15. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — HAN
Mar 30 — Apr 61
Sun 3/30
Sun 4/6
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 March 25, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$798
(Delta)

One-way from

$430
(United Airlines)

Popular in

December

Cheapest in

March

Average price

$860
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 ($182 potential increase over avg. RT price).
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Cheapest flight prices on average. 7% potential price decrease ($76 potential savings vs. average RT price).
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Average for round-trip flights in March 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 March 25, 2025.

This Delta deal was found by Cheapflights users on 3/24. 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.
Mon 4/75:40 amONT - HAN
2 stops25h 55mDelta
Sat 5/1011:10 pmHAN - ONT
2 stops33h 10mDelta
Deal found 3/24$798
This FlightHub deal was found by Cheapflights users on 3/24. 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 10/1312:10 amONT - HAN
1 stop20h 25mChina Airlines
Thu 10/2311:35 amHAN - ONT
1 stop20h 25mChina Airlines
Deal found 3/24$815
This United Airlines deal was found by Cheapflights users on 3/24. 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.
Wed 8/276:00 amONT - HAN
2 stops26h 15mUnited Airlines
Wed 9/1711:35 pmHAN - ONT
2 stops32h 07mUnited Airlines
Deal found 3/24$827
This Justfly.com deal was found by Cheapflights users on 3/24. 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.
Wed 10/297:00 amONT - HAN
2 stops24h 40mKorean Air
Wed 11/2612:20 pmHAN - ONT
2 stops20h 02mKorean Air
Deal found 3/24$935
This Trip.com deal was found by Cheapflights users on 3/24. 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.
Mon 4/78:26 amONT - HAN
2 stops41h 09mMultiple Airlines
Thu 5/811:35 amHAN - ONT
1 stop20h 25mMultiple Airlines
Deal found 3/24$1,116
This Gurufare deal was found by Cheapflights users on 3/24. 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.
Mon 6/2311:10 pmONT - HAN
1 stop27h 40mSTARLUX Airlines
Mon 7/711:10 amHAN - ONT
1 stop20h 30mSTARLUX Airlines
Deal found 3/24$1,431
This oojo deal was found by Cheapflights users on 3/25. 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.
Sun 4/206:00 amONT - HAN
2 stops35h 15mQatar Airways
Mon 8/258:45 amHAN - ONT
2 stops42h 43mQatar Airways
Deal found 3/25$2,239
This oojo deal was found by Cheapflights users on 3/24. 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 4/86:00 amONT - HAN
2 stops25h 50mJapan Airlines
Wed 5/711:20 pmHAN - ONT
2 stops30h 12mJapan Airlines
Deal found 3/24$2,366

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 March 25, 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 4/7

5:40 am-9:35 pm

2 stops25h 55m

Hanoi Noibai

Sat 5/10

11:10 pm-6:20 pm

2 stops33h 10m

$798

OntarioHanoi

ONT - HAN

ONTHAN

Ontario

Wed 8/27

6:00 am-10:15 pm

2 stops26h 15m

Hanoi Noibai

Wed 9/17

11:35 pm-5:42 pm

2 stops32h 07m

$827

OntarioHanoi

ONT - HAN

ONTHAN

Ontario

Sun 4/6

12:10 am-10:35 am

1 stop20h 25m

Hanoi Noibai

Thu 5/8

11:35 am-6:00 pm

1 stop20h 25m

$853

OntarioHanoi

ONT - HAN

ONTHAN

Ontario

Mon 4/7

8:26 am-3:35 pm

2 stops41h 09m

Hanoi Noibai

Thu 5/8

11:35 am-6:00 pm

1 stop20h 25m

$1,116

OntarioHanoi

ONT - HAN

ONTHAN

Ontario

Wed 4/9

5:40 am-9:35 pm

2 stops25h 55m

Hanoi Noibai

Wed 4/23

11:10 pm-10:43 pm

2 stops37h 33m

$1,194

OntarioHanoi

ONT - HAN

ONTHAN

Ontario

Mon 6/23

11:10 pm-4:50 pm

1 stop27h 40m

Hanoi Noibai

Mon 7/7

11:10 am-5:40 pm

1 stop20h 30m

$1,431

OntarioHanoi

ONT - HAN

ONTHAN

Ontario

Sun 4/20

6:00 am-7:15 am

2 stops35h 15m

Hanoi Noibai

Mon 8/25

8:45 am-1:28 pm

2 stops42h 43m

$2,239

OntarioHanoi

ONT - HAN

ONTHAN

Ontario

Tue 4/8

6:00 am-9:50 pm

2 stops25h 50m

Hanoi Noibai

Wed 5/7

11:20 pm-3:32 pm

2 stops30h 12m

$2,366

OntarioHanoi

ONT - HAN

ONTHAN

Ontario

Sun 4/27

6:15 am-9:50 pm

3 stops25h 35m

Hanoi Noibai

Wed 5/7

11:20 pm-9:58 pm

2 stops36h 38m

$4,954

OntarioHanoi

ONT - HAN

ONTHAN

Ontario

Tue 7/15

6:00 am-10:15 pm

2 stops26h 15m

$430

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/24

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 March.
ProviderPrice AccuracyTrust Score*
FlightHubPrice Accuracy3 starsTrust Score*3 stars
AranGrantPrice 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 FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Ontario-Hanoi flight deals on Cheapflights vs. FlightHub >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 FlightHub the most. FlightHub 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 March 25, 2025.
Get a feel of what it's like to fly with STARLUX Airlines, Korean Air and Japan Airlines 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
144 reviews

Crew

9.3

Boarding

9.0

Comfort

9.0

Food

8.9

Overall

9.1

Entertainment

9.0

Reviews

1 / 5
10.0
Excellent

Andrew,Jan 2025

LAX - TPE

Crew were attentive from start to finish. Each meal was amazing. IFE screen was huge and had quite a bit of western movies, however the tv shows were lacking.
STARLUX Airlines
9.1
Wonderful
144 reviews
STARLUX Airlines
9.1
Wonderful
144 reviews

Crew

9.3

Boarding

9.0

Comfort

9.0

Food

8.9

Overall

9.1

Entertainment

9.0

Reviews

1 / 5
10.0
Excellent

Andrew,Jan 2025

LAX - TPE

Crew were attentive from start to finish. Each meal was amazing. IFE screen was huge and had quite a bit of western movies, however the tv shows were lacking.
Korean Air
8.4
Very good
1,047 reviews
STARLUX Airlines
9.1
Wonderful
144 reviews

Crew

9.3

Boarding

9.0

Comfort

9.0

Food

8.9

Overall

9.1

Entertainment

9.0

Reviews

1 / 5
10.0
Excellent

Andrew,Jan 2025

LAX - TPE

Crew were attentive from start to finish. Each meal was amazing. IFE screen was huge and had quite a bit of western movies, however the tv shows were lacking.
Japan Airlines
8.3
Very good
1,440 reviews
STARLUX Airlines
9.1
Wonderful
144 reviews

Crew

9.3

Boarding

9.0

Comfort

9.0

Food

8.9

Overall

9.1

Entertainment

9.0

Reviews

1 / 5
10.0
Excellent

Andrew,Jan 2025

LAX - TPE

Crew were attentive from start to finish. Each meal was amazing. IFE screen was huge and had quite a bit of western movies, however the tv shows were lacking.
China Airlines
8.2
Very good
722 reviews
STARLUX Airlines
9.1
Wonderful
144 reviews

Crew

9.3

Boarding

9.0

Comfort

9.0

Food

8.9

Overall

9.1

Entertainment

9.0

Reviews

1 / 5
10.0
Excellent

Andrew,Jan 2025

LAX - TPE

Crew were attentive from start to finish. Each meal was amazing. IFE screen was huge and had quite a bit of western movies, however the tv shows were lacking.
Delta
8.0
Very good
7,890 reviews
STARLUX Airlines
9.1
Wonderful
144 reviews

Crew

9.3

Boarding

9.0

Comfort

9.0

Food

8.9

Overall

9.1

Entertainment

9.0

Reviews

1 / 5
10.0
Excellent

Andrew,Jan 2025

LAX - TPE

Crew were attentive from start to finish. Each meal was amazing. IFE screen was huge and had quite a bit of western movies, however the tv shows were lacking.

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 Delta is currently your cheapest option to Hanoi, with prices starting at $798. Additional round-trip tickets that might be worth considering are offered by United Airlines and China Airlines, with the lowest prices starting at $827 and $853, respectively. These flights start at 25% lower than the current average price 3 months from now.

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

    $430 is the cheapest one-way deal found within the past few days, from United Airlines. You may also be able to find cheap deals on Delta and China Airlines, with prices starting from $445 and $462, 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

See prices for flight routes from nearby airports that may be better suited for you.
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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 March 25, 2025.
AirlineCheapestAverageFlexibilityOn-time
China AirlinesCheapest$770Average$913FlexibilityNo cancel feeOn-time70%
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