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$371+ 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 8/20. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — HAN
Jun 17 — Jun 241
Tue 6/17
Tue 6/24
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 June 12, 2025.

Round-trip from

$786
(FlightHub)

One-way from

$371
(ScholarTrip)

Popular in

December

Cheapest in

September

Average price

$1,555
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. 11% potential increase in price ($146 potential increase over avg. RT price).
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Cheapest flight prices on average. 6% potential price decrease ($64 potential savings vs. average RT price).
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Average for round-trip flights in June 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 June 12, 2025.

This FlightHub deal was found by Cheapflights users on 6/12. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/266:43 amONT - HAN
2 stops37h 27mKorean Air
Sat 12/612:20 pmHAN - ONT
2 stops43h 57mKorean Air
Deal found 6/12$786
This oojo deal was found by Cheapflights users on 6/10. 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.
Tue 9/912:45 amONT - HAN
1 stop19h 50mChina Airlines
Thu 9/2511:35 amHAN - ONT
1 stop20h 25mChina Airlines
Deal found 6/10$802
This oojo deal was found by Cheapflights users on 6/10. 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.
Fri 8/1511:45 pmONT - HAN
1 stop20h 40mSTARLUX Airlines
Mon 8/2511:10 amHAN - ONT
1 stop20h 30mSTARLUX Airlines
Deal found 6/10$813
This United Airlines deal was found by Cheapflights users on 6/11. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/106:00 amONT - HAN
2 stops26h 15mUnited Airlines
Tue 9/3011:35 pmHAN - ONT
2 stops32h 05mUnited Airlines
Deal found 6/11$828
This Delta deal was found by Cheapflights users on 6/12. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/36:00 amONT - HAN
2 stops25h 35mDelta
Fri 7/1111:10 pmHAN - ONT
2 stops37h 37mDelta
Deal found 6/12$881
This Expedia deal was found by Cheapflights users on 6/12. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/266:43 amONT - HAN
2 stops23h 57mMultiple Airlines
Sat 12/611:35 amHAN - ONT
1 stop20h 15mMultiple Airlines
Deal found 6/12$988
This oojo deal was found by Cheapflights users on 6/11. 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.
Tue 10/146:00 amONT - HAN
2 stops35h 15mQatar Airways
Fri 10/316:15 pmHAN - ONT
2 stops40h 33mQatar Airways
Deal found 6/11$1,288
This Alaska Airlines deal was found by Cheapflights users on 6/11. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/156:00 amONT - HAN
2 stops25h 50mAlaska Airlines
Sun 9/2811:20 pmHAN - ONT
2 stops38h 39mAlaska Airlines
Deal found 6/11$1,293
This oojo deal was found by Cheapflights users on 6/11. 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.
Tue 7/16:58 pmONT - HAN
2 stops26h 07mEVA Air
Sun 8/36:00 pmHAN - ONT
2 stops20h 13mEVA Air
Deal found 6/11$1,400

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 June 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

Wed 11/26

6:43 am-11:10 am

2 stops37h 27m

Hanoi Noibai

Sat 12/6

12:20 pm-5:17 pm

2 stops43h 57m

$786

OntarioHanoi

ONT - HAN

ONTHAN

Ontario

Tue 9/9

12:45 am-10:35 am

1 stop19h 50m

Hanoi Noibai

Thu 9/25

11:35 am-6:00 pm

1 stop20h 25m

$802

OntarioHanoi

ONT - HAN

ONTHAN

Ontario

Fri 8/15

11:45 pm-10:25 am

1 stop20h 40m

Hanoi Noibai

Mon 8/25

11:10 am-5:40 pm

1 stop20h 30m

$813

OntarioHanoi

ONT - HAN

ONTHAN

Ontario

Wed 9/10

6:00 am-10:15 pm

2 stops26h 15m

Hanoi Noibai

Tue 9/30

11:35 pm-5:40 pm

2 stops32h 05m

$828

OntarioHanoi

ONT - HAN

ONTHAN

Ontario

Thu 7/3

6:00 am-9:35 pm

2 stops25h 35m

Hanoi Noibai

Fri 7/11

11:10 pm-10:47 pm

2 stops37h 37m

$881

OntarioHanoi

ONT - HAN

ONTHAN

Ontario

Wed 11/26

6:43 am-9:40 pm

2 stops23h 57m

Hanoi Noibai

Sat 12/6

11:35 am-4:50 pm

1 stop20h 15m

$988

OntarioHanoi

ONT - HAN

ONTHAN

Ontario

Tue 10/14

6:00 am-7:15 am

2 stops35h 15m

Hanoi Noibai

Fri 10/31

6:15 pm-8:48 pm

2 stops40h 33m

$1,288

OntarioHanoi

ONT - HAN

ONTHAN

Ontario

Mon 9/15

6:00 am-9:50 pm

2 stops25h 50m

Hanoi Noibai

Sun 9/28

11:20 pm-11:59 pm

2 stops38h 39m

$1,293

OntarioHanoi

ONT - HAN

ONTHAN

Ontario

Tue 7/1

6:58 pm-11:05 am

2 stops26h 07m

Hanoi Noibai

Sun 8/3

6:00 pm-12:13 am

2 stops20h 13m

$1,400

OntarioHanoi

ONT - HAN

ONTHAN

Ontario

Wed 8/20

6:00 am-9:35 pm

2 stops25h 35m

$371

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/12

Showing 1-10 of 18 results
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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 June 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
177 reviews

Food

8.8

Overall

9.1

Comfort

9.0

Entertainment

8.9

Boarding

9.0

Crew

9.3

Reviews

1 / 7
10.0
Excellent

ltulagan,Jun 2025

TPE - SEA

The whole trip was very pleasant from the crew, the food, the amenities during the flight.
STARLUX Airlines
9.1
Wonderful
177 reviews
STARLUX Airlines
9.1
Wonderful
177 reviews

Food

8.8

Overall

9.1

Comfort

9.0

Entertainment

8.9

Boarding

9.0

Crew

9.3

Reviews

1 / 7
10.0
Excellent

ltulagan,Jun 2025

TPE - SEA

The whole trip was very pleasant from the crew, the food, the amenities during the flight.
EVA Air
8.4
Very good
1,202 reviews
STARLUX Airlines
9.1
Wonderful
177 reviews

Food

8.8

Overall

9.1

Comfort

9.0

Entertainment

8.9

Boarding

9.0

Crew

9.3

Reviews

1 / 7
10.0
Excellent

ltulagan,Jun 2025

TPE - SEA

The whole trip was very pleasant from the crew, the food, the amenities during the flight.
Korean Air
8.4
Very good
1,088 reviews
STARLUX Airlines
9.1
Wonderful
177 reviews

Food

8.8

Overall

9.1

Comfort

9.0

Entertainment

8.9

Boarding

9.0

Crew

9.3

Reviews

1 / 7
10.0
Excellent

ltulagan,Jun 2025

TPE - SEA

The whole trip was very pleasant from the crew, the food, the amenities during the flight.
Japan Airlines
8.3
Very good
1,489 reviews
STARLUX Airlines
9.1
Wonderful
177 reviews

Food

8.8

Overall

9.1

Comfort

9.0

Entertainment

8.9

Boarding

9.0

Crew

9.3

Reviews

1 / 7
10.0
Excellent

ltulagan,Jun 2025

TPE - SEA

The whole trip was very pleasant from the crew, the food, the amenities during the flight.
China Airlines
8.3
Very good
738 reviews
STARLUX Airlines
9.1
Wonderful
177 reviews

Food

8.8

Overall

9.1

Comfort

9.0

Entertainment

8.9

Boarding

9.0

Crew

9.3

Reviews

1 / 7
10.0
Excellent

ltulagan,Jun 2025

TPE - SEA

The whole trip was very pleasant from the crew, the food, the amenities during the flight.

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 Korean Air is currently your cheapest option to Hanoi, with prices starting at $786. Additional round-trip tickets that might be worth considering are offered by China Airlines and STARLUX Airlines, with the lowest prices starting at $802 and $813, respectively. These flights start at 27% lower than the current average price 3 months from now.

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

    $371 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 Delta, with prices starting from $430 and $445, 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 June 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
China AirlinesCheapest$749Average$911FlexibilityNo cancel feeOn-time70%

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