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$365+ 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 9/17. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — HAN
Aug 3 — Aug 101
Sun 8/3
Sun 8/10
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 July 29, 2025.

Round-trip from

$711
(Delta)

One-way from

$365
(iWofly)

Popular in

December

Cheapest in

September

Average price

$965
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. 9% potential increase in price ($115 potential increase over avg. RT price).
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Cheapest flight prices on average. 6% potential price decrease ($65 potential savings vs. average RT price).
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Average for round-trip flights in July 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 July 29, 2025.

This Delta deal was found by Cheapflights users on 7/28. 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.
Tue 8/196:00 amONT - HAN
2 stops25h 35mDelta
Tue 8/2612:00 pmHAN - ONT
2 stops24h 40mDelta
Deal found 7/28$711
This Korean Air deal was found by Cheapflights users on 7/28. 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.
Tue 9/236:00 amONT - HAN
2 stops25h 35mKorean Air
Tue 9/3011:10 pmHAN - ONT
2 stops37h 30mKorean Air
Deal found 7/28$716
This oojo deal was found by Cheapflights users on 7/27. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/1910:50 pmONT - HAN
1 stop26h 40mChina Airlines
Wed 12/1011:35 amHAN - ONT
1 stop20h 15mChina Airlines
Deal found 7/27$799
This United Airlines deal was found by Cheapflights users on 7/28. 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 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 stops35h 08mUnited Airlines
Deal found 7/28$802
This oojo deal was found by Cheapflights users on 7/26. 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 8/2511:45 pmONT - HAN
1 stop27h 05mSTARLUX Airlines
Mon 9/111:10 amHAN - ONT
1 stop19h 55mSTARLUX Airlines
Deal found 7/26$815

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 July 29, 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

Tue 8/19

6:00 am-9:35 pm

2 stops25h 35m

Hanoi Noibai

Tue 8/26

12:00 pm-10:40 pm

2 stops24h 40m

$711

OntarioHanoi

ONT - HAN

ONTHAN

Ontario

Tue 9/23

6:00 am-9:35 pm

2 stops25h 35m

Hanoi Noibai

Wed 10/1

11:10 pm-5:00 pm

2 stops31h 50m

$716

OntarioHanoi

ONT - HAN

ONTHAN

Ontario

Mon 9/1

12:45 am-10:35 am

1 stop19h 50m

Hanoi Noibai

Tue 9/16

5:50 pm-6:00 pm

1 stop38h 10m

$800

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-8:43 pm

2 stops35h 08m

$802

OntarioHanoi

ONT - HAN

ONTHAN

Ontario

Mon 8/25

11:45 pm-4:50 pm

1 stop27h 05m

Hanoi Noibai

Mon 9/1

11:10 am-5:05 pm

1 stop19h 55m

$815

OntarioHanoi

ONT - HAN

ONTHAN

Ontario

Tue 10/14

6:37 am-9:35 pm

2 stops24h 58m

Hanoi Noibai

Thu 10/30

6:25 pm-4:50 pm

1 stop36h 25m

$882

OntarioHanoi

ONT - HAN

ONTHAN

Ontario

Wed 9/17

6:00 am-9:35 pm

2 stops25h 35m

$365

OntarioHanoi

ONT - HAN

ONTHAN

Ontario

Fri 10/3

9:36 am-10:15 pm

2 stops22h 39m

$419

OntarioHanoi

ONT - HAN

ONTHAN

Ontario

Sun 9/21

6:00 am-1:45 am

3 stops29h 45m

$445

OntarioHanoi

ONT - HAN

ONTHAN

Ontario

Sun 1/4

10:50 pm-4:30 pm

1 stop26h 40m

$449

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/28

Showing 1-10 of 13 results
1
2

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 $956). 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.

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 July 29, 2025.
Read through reviews of airlines operating flights from Ontario to Hanoi, such as STARLUX Airlines, EVA Air, and Korean Air. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
STARLUX Airlines
9.0
Wonderful
198 reviews

Food

8.8

Comfort

8.9

Overall

9.0

Crew

9.3

Boarding

9.0

Entertainment

9.0

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
9.0
Wonderful
198 reviews
STARLUX Airlines
9.0
Wonderful
198 reviews

Food

8.8

Comfort

8.9

Overall

9.0

Crew

9.3

Boarding

9.0

Entertainment

9.0

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
1,221 reviews
STARLUX Airlines
9.0
Wonderful
198 reviews

Food

8.8

Comfort

8.9

Overall

9.0

Crew

9.3

Boarding

9.0

Entertainment

9.0

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
1,121 reviews
STARLUX Airlines
9.0
Wonderful
198 reviews

Food

8.8

Comfort

8.9

Overall

9.0

Crew

9.3

Boarding

9.0

Entertainment

9.0

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
754 reviews
STARLUX Airlines
9.0
Wonderful
198 reviews

Food

8.8

Comfort

8.9

Overall

9.0

Crew

9.3

Boarding

9.0

Entertainment

9.0

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.
Alaska Airlines
8.0
Very good
10,000 reviews
STARLUX Airlines
9.0
Wonderful
198 reviews

Food

8.8

Comfort

8.9

Overall

9.0

Crew

9.3

Boarding

9.0

Entertainment

9.0

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 Delta is currently your cheapest option to Hanoi, with prices starting at $711. Additional round-trip tickets that might be worth considering are offered by Korean Air and China Airlines, with the lowest prices starting at $716 and $800, respectively. These flights start at 33% lower than the current average price 3 months from now.

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

    $365 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 China Airlines, with prices starting from $419 and $449, 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 $956). 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 July 29, 2025.
AirlineCheapestAverageFlexibilityOn-time
China AirlinesCheapest$769Average$904FlexibilityNo cancel feeOn-time70%

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