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$484+ Cheap flights from Hanoi (HAN) to Ontario (ONT)

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 9/25. Fares are subject to change and may not be available on all flights or dates of travel.
HAN — ONT
Jun 17 — Jun 241
Tue 6/17
Tue 6/24
1 adult, Economy
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Cheap flight deals from Hanoi to Ontario

Discover tips and strategies to find the most affordable flight options for your journey from Hanoi (HAN) to Ontario (ONT). 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

$793
(Booking.com)

One-way from

$484
(oojo)

Popular in

August

Cheapest in

October

Average price

$883
From Hanoi Noibai to Ontario
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One-way flight from Hanoi Noibai to Ontario
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Highest demand for flights based on searches. 15% potential increase in price ($157 potential increase over avg. RT price).
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Cheapest flight prices on average. 4% potential price decrease ($36 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 Hanoi to Ontario

Cheapest flights from Hanoi to Ontario
Explore the most affordable flight options available from Hanoi to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 12, 2025.

This Booking.com 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/511:10 amHAN - ONT
1 stop19h 55mSTARLUX Airlines
Fri 9/1911:10 pmONT - HAN
1 stop21h 15mSTARLUX Airlines
Deal found 6/11$793
This China 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 China Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/511:35 amHAN - ONT
1 stop21h 05mChina Airlines
Thu 9/1812:10 amONT - HAN
1 stop26h 40mChina Airlines
Deal found 6/11$856
This Priceline 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/2411:35 amHAN - ONT
1 stop21h 05mMultiple Airlines
Wed 9/311:10 pmONT - HAN
1 stop21h 00mMultiple Airlines
Deal found 6/11$1,079
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.
Sun 8/2411:35 pmHAN - ONT
2 stops34h 58mUnited Airlines
Wed 9/36:00 amONT - HAN
2 stops26h 15mUnited Airlines
Deal found 6/11$1,158
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 6/103:00 amHAN - ONT
2 stops29h 25mQatar Airways
Wed 6/186:00 amONT - HAN
2 stops41h 55mQatar Airways
Deal found 6/10$1,944

Cheapflights Fare Finder

Customize your flight search to find flights from Hanoi to Ontario 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 Hanoi to Ontario that are best for you.

Fly from

Hanoi

Fly to

Ontario

Route

Depart

Return

Price

HanoiOntario

HAN - ONT

HANONT

Hanoi Noibai

Fri 9/5

11:10 am-5:05 pm

1 stop19h 55m

Ontario

Fri 9/19

11:10 pm-10:25 am

1 stop21h 15m

$793

HanoiOntario

HAN - ONT

HANONT

Hanoi Noibai

Fri 9/5

11:35 am-6:40 pm

1 stop21h 05m

Ontario

Thu 9/18

12:10 am-4:50 pm

1 stop26h 40m

$856

HanoiOntario

HAN - ONT

HANONT

Hanoi Noibai

Sun 8/24

11:35 am-6:40 pm

1 stop21h 05m

Ontario

Wed 9/3

11:10 pm-10:10 am

1 stop21h 00m

$1,079

HanoiOntario

HAN - ONT

HANONT

Hanoi Noibai

Sun 8/24

11:35 pm-8:33 pm

2 stops34h 58m

Ontario

Wed 9/3

6:00 am-10:15 pm

2 stops26h 15m

$1,158

HanoiOntario

HAN - ONT

HANONT

Hanoi Noibai

Sat 8/23

3:00 am-6:25 pm

2 stops29h 25m

Ontario

Wed 9/3

11:39 am-7:15 am

2 stops29h 36m

$2,116

HanoiOntario

HAN - ONT

HANONT

Hanoi Noibai

Thu 9/25

5:50 pm-5:05 pm

1 stop37h 15m

$484

HanoiOntario

HAN - ONT

HANONT

Hanoi Noibai

Tue 11/4

11:35 am-4:50 pm

1 stop20h 15m

$520

HanoiOntario

HAN - ONT

HANONT

Hanoi Noibai

Wed 11/5

5:45 am-4:50 pm

2 stops26h 05m

$537

HanoiOntario

HAN - ONT

HANONT

Hanoi Noibai

Thu 9/25

11:35 pm-5:40 pm

2 stops32h 05m

$546

HanoiOntario

HAN - ONT

HANONT

Hanoi Noibai

Tue 7/15

3:00 am-6:04 pm

2 stops29h 04m

$1,154

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/10

Showing 1-10 of 11 results
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Best time to book a flight from Hanoi to Ontario

Have a flexible travel schedule? Discover the best time to fly to Ontario from Hanoi 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 Hanoi to Ontario

What is the cheapest month to book a flight from Hanoi to Ontario?

Currently, August is the cheapest month in which you can book a flight from Hanoi to Ontario (average of $246). Flying from Hanoi to Ontario in March is currently the most expensive (average of $328). 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 Ontario by month

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

In terms of precipitation, rainfall in Ontario ranges from 0.1 - 3.4 inches per month. February is typically the wettest month, when rainfall can reach 3.4 in. June is typically the driest time to visit Ontario when rainfall is around 0.1 in.

Temperature in Ontario by month

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

If weather is an important factor for your trip to Ontario, use this chart to help with planning. For those seeking warmer temperatures, August is the ideal time of year to visit, when temperatures reach an average of 78.8 F. Travelers looking to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 53.6 F).

Reviews of airlines servicing Ontario

Get insights into the airlines that provide service to Ontario. 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 Ontario. Reviews last updated June 12, 2025.
See what other customers who have flown with STARLUX Airlines, EVA Air and China Airlines from Hanoi to Ontario have to say. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
STARLUX Airlines
9.1
Wonderful
177 reviews

Boarding

9.0

Food

8.8

Crew

9.3

Comfort

9.0

Overall

9.1

Entertainment

8.9

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

Boarding

9.0

Food

8.8

Crew

9.3

Comfort

9.0

Overall

9.1

Entertainment

8.9

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

Boarding

9.0

Food

8.8

Crew

9.3

Comfort

9.0

Overall

9.1

Entertainment

8.9

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

Boarding

9.0

Food

8.8

Crew

9.3

Comfort

9.0

Overall

9.1

Entertainment

8.9

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.
Qatar Airways
7.4
Good
3,584 reviews
STARLUX Airlines
9.1
Wonderful
177 reviews

Boarding

9.0

Food

8.8

Crew

9.3

Comfort

9.0

Overall

9.1

Entertainment

8.9

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.
United Airlines
7.4
Good
8,790 reviews
STARLUX Airlines
9.1
Wonderful
177 reviews

Boarding

9.0

Food

8.8

Crew

9.3

Comfort

9.0

Overall

9.1

Entertainment

8.9

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 Hanoi to Ontario. 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 to fly from Hanoi to Ontario one-way?

    $484 is the cheapest one-way deal found within the past few days, from STARLUX Airlines. You may also be able to find cheap deals on China Airlines and United Airlines, with prices starting from $520 and $546, respectively.

  • Can I find deals for flights from Hanoi to Ontario that include hotel bookings?

    Yes. In addition to deals on Hanoi to Ontario flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Hanoi to Ontario?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Hanoi to Ontario.

  • Can I find deals for business class flights from Hanoi to Ontario?

    Yes. Cheapflights offers flight deals from Hanoi to Ontario 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 Hanoi to Ontario?

    Currently, August is the cheapest month in which you can book a flight from Hanoi to Ontario (average of $246). Flying from Hanoi to Ontario in March is currently the most expensive (average of $328). 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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