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$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 8/25. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — HAN
Jul 14 — Jul 211
Mon 7/14
Mon 7/21
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 9, 2025.

Round-trip from

$711
(Delta)

One-way from

$368
(Delta)

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. 11% potential increase in price ($136 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 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 9, 2025.

This FlightHub deal was found by Cheapflights users on 7/8. 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 10/296:45 amONT - HAN
2 stops38h 25mKorean Air
Wed 11/1211:00 pmHAN - ONT
2 stops33h 17mKorean Air
Deal found 7/8$699
This Delta deal was found by Cheapflights users on 7/9. 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 11/116:43 amONT - HAN
2 stops23h 57mDelta
Mon 12/111:00 pmHAN - ONT
2 stops38h 42mDelta
Deal found 7/9$711
This oojo deal was found by Cheapflights users on 7/7. 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 10/1712:10 amONT - HAN
1 stop26h 40mChina Airlines
Wed 11/1211:35 amHAN - ONT
1 stop20h 15mChina Airlines
Deal found 7/7$802
This United Airlines deal was found by Cheapflights users on 7/6. 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.
Tue 8/196:00 amONT - HAN
2 stops26h 15mUnited Airlines
Tue 9/1611:35 pmHAN - ONT
2 stops32h 02mUnited Airlines
Deal found 7/6$803
This oojo deal was found by Cheapflights users on 7/9. 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 10/2910:45 pmONT - HAN
1 stop21h 45mSTARLUX Airlines
Thu 11/206:25 pmHAN - ONT
1 stop36h 25mSTARLUX Airlines
Deal found 7/9$813
This Mytrip deal was found by Cheapflights users on 7/8. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/96:00 amONT - HAN
3 stops29h 45mMultiple Airlines
Tue 9/237:20 pmHAN - ONT
3 stops35h 40mMultiple Airlines
Deal found 7/8$852

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 9, 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 8/6

6:00 am-10:40 am

2 stops38h 40m

Hanoi Noibai

Wed 8/13

12:00 pm-11:40 pm

2 stops25h 40m

$711

OntarioHanoi

ONT - HAN

ONTHAN

Ontario

Tue 9/16

6:00 am-10:40 am

2 stops38h 40m

Hanoi Noibai

Tue 9/30

11:10 pm-10:40 pm

2 stops37h 30m

$716

OntarioHanoi

ONT - HAN

ONTHAN

Ontario

Tue 8/19

6:00 am-10:15 pm

2 stops26h 15m

Hanoi Noibai

Tue 9/16

11:35 pm-5:37 pm

2 stops32h 02m

$803

OntarioHanoi

ONT - HAN

ONTHAN

Ontario

Mon 8/18

12:45 am-4:50 pm

1 stop26h 05m

Hanoi Noibai

Tue 9/16

11:35 am-6:00 pm

1 stop20h 25m

$815

OntarioHanoi

ONT - HAN

ONTHAN

Ontario

Mon 9/22

11:10 pm-4:50 pm

1 stop27h 40m

Hanoi Noibai

Fri 9/26

11:10 am-5:05 pm

1 stop19h 55m

$831

OntarioHanoi

ONT - HAN

ONTHAN

Ontario

Tue 9/9

6:00 am-1:45 am

3 stops29h 45m

Hanoi Noibai

Tue 9/23

7:20 pm-5:00 pm

3 stops35h 40m

$852

OntarioHanoi

ONT - HAN

ONTHAN

Ontario

Mon 8/25

6:00 am-9:35 pm

2 stops25h 35m

$368

OntarioHanoi

ONT - HAN

ONTHAN

Ontario

Fri 9/5

6:00 am-9:35 pm

2 stops25h 35m

$426

OntarioHanoi

ONT - HAN

ONTHAN

Ontario

Sun 9/7

6:50 pm-10:15 pm

2 stops37h 25m

$443

OntarioHanoi

ONT - HAN

ONTHAN

Ontario

Wed 8/6

12:45 am-10:35 am

1 stop19h 50m

$458

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/8

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 $969). 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 9, 2025.
Read through reviews of airlines operating flights from Ontario to Hanoi, such as STARLUX Airlines, Korean Air, and China Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
STARLUX Airlines
9.0
Wonderful
188 reviews

Entertainment

9.0

Overall

9.0

Food

8.9

Crew

9.3

Boarding

9.0

Comfort

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
188 reviews
STARLUX Airlines
9.0
Wonderful
188 reviews

Entertainment

9.0

Overall

9.0

Food

8.9

Crew

9.3

Boarding

9.0

Comfort

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
1,105 reviews
STARLUX Airlines
9.0
Wonderful
188 reviews

Entertainment

9.0

Overall

9.0

Food

8.9

Crew

9.3

Boarding

9.0

Comfort

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
744 reviews
STARLUX Airlines
9.0
Wonderful
188 reviews

Entertainment

9.0

Overall

9.0

Food

8.9

Crew

9.3

Boarding

9.0

Comfort

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
188 reviews

Entertainment

9.0

Overall

9.0

Food

8.9

Crew

9.3

Boarding

9.0

Comfort

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.
Delta
8.0
Very good
7,958 reviews
STARLUX Airlines
9.0
Wonderful
188 reviews

Entertainment

9.0

Overall

9.0

Food

8.9

Crew

9.3

Boarding

9.0

Comfort

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 United Airlines, with the lowest prices starting at $716 and $803, respectively. These flights start at 34% lower than the current average price 3 months from now.

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

    $368 is the cheapest one-way deal found within the past few days, from Delta. You may also be able to find cheap deals on Korean Air and United Airlines, with prices starting from $426 and $443, 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 $969). 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 9, 2025.
AirlineCheapestAverageFlexibilityOn-time
China AirlinesCheapest$769Average$910FlexibilityNo cancel feeOn-time70%

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