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.

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).

How far in advance should I book a flight from Hamilton, Ontario to Ontario?

To save up to 92% on this flight, we recommend booking at least 53 days prior to travel. The price may fluctuate and will likely increase closer to your departure date. Users on Cheapflights have found tickets from Hamilton, Ontario to Ontario from $333 1-2 weeks out and tickets from $547 for flights departing within the next 72 hours.

What is the cheapest month to fly from Hamilton, Ontario to Ontario?

Our data shows that September tends to be the cheapest month to fly to Ontario from Hamilton, Ontario. Users have commonly found prices around $298 for the month, but tickets can be as low as $149. Due to multiple factors, prepare for potentially higher prices in December.

What is the cheapest time of day to fly from YHM to ONT?

When flying from Hamilton, Ontario to Ontario, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

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

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

How can I find direct flights from Hamilton to Ontario?

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

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

Yes. Cheapflights offers flight deals from Hamilton 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.

$247+ Flights from Hamilton, ON to Ontario

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1. Tell us where you want to go

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Cheap flight deals from Hamilton to Ontario

Round-trip from	$611 (Kissandfly.com)
One-way from	$247 (Kiwi.com)
Popular in	December
Cheapest in	September
Average price	$319

From Hamilton to Ontario

Search Deals

One-way flight from Hamilton to Ontario

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Highest demand for flights based on searches. 10% potential increase in price ($34 potential increase over avg. RT price).

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Cheapest flight prices on average. 4% potential price decrease ($12 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 Hamilton to Ontario

Cheapest flights from Hamilton to Ontario
Explore the most affordable flight options available from Hamilton to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 18, 2025.

Sun 8/316:00 amYHM - ONT

2 stops20h 53mMultiple Airlines

Sun 9/77:40 pmONT - YHM

2 stops18h 04mMultiple Airlines

Deal found 7/17

$611

Fri 8/296:00 amYHM - ONT

3 stops14h 11mWestJet

Fri 9/56:00 amONT - YHM

2 stops15h 40mWestJet

Deal found 7/15

$905

Best flights from Hamilton to Ontario
Discover carefully curated flight deals from Hamilton to Ontario that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated July 18, 2025.

Sun 8/316:00 amYHM - ONT

2 stops20h 53mMultiple Airlines

Sun 9/77:40 pmONT - YHM

2 stops18h 04mMultiple Airlines

Deal found 7/17

$611

Fri 8/296:00 amYHM - ONT

3 stops14h 11mWestJet

Fri 9/56:00 amONT - YHM

2 stops15h 40mWestJet

Deal found 7/15

$905

Last-minute flights from Hamilton to Ontario
Discover last-minute flight deals from Hamilton to Ontario. Data last updated July 18, 2025 and is based on user searches.

Fri 7/255:45 pmYHM - ONT

2 stops27h 34mMultiple Airlines

Mon 7/282:14 pmONT - YHM

2 stops23h 30mMultiple Airlines

Deal found 7/16

$1,129

Fri 8/296:00 amYHM - ONT

3 stops14h 11mWestJet

Fri 9/56:00 amONT - YHM

2 stops15h 40mWestJet

Deal found 7/15

$905

Sun 8/316:00 amYHM - ONT

2 stops20h 53mMultiple Airlines

Sun 9/77:40 pmONT - YHM

2 stops18h 04mMultiple Airlines

Deal found 7/17

$611

One-way flights from Hamilton to Ontario
Search for one-way flight options from Hamilton to Ontario. Find affordable one-way fares based on user searches. Data last updated July 18, 2025.

Wed 8/136:00 amYHM - ONT

3 stops37h 19mMultiple Airlines

Deal found 7/15

$247

Sat 9/66:00 amYHM - ONT

2 stops14h 11mWestJet

Deal found 7/15

$392

Cheapflights Fare Finder

Use the filters below to find and compare flights from Hamilton to Ontario that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

HamiltonOntario

YHM - ONT

YHMONT

Hamilton

Sun 8/31

6:00 am-11:53 pm

2 stops20h 53m

Ontario

Sun 9/7

7:40 pm-4:44 pm

2 stops18h 04m

$611

HamiltonOntario

YHM - ONT

YHMONT

Hamilton

Fri 8/29

6:00 am-5:11 pm

3 stops14h 11m

Ontario

Fri 9/5

6:00 am-12:40 am

2 stops15h 40m

$905

HamiltonOntario

YHM - ONT

YHMONT

Hamilton

Wed 8/13

6:00 am-4:19 pm

3 stops37h 19m

$247

HamiltonOntario

YHM - ONT

YHMONT

Hamilton

Sat 9/6

6:00 am-5:11 pm

2 stops14h 11m

$392

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/15

Best time to book a flight from Hamilton to Ontario

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

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

Currently, August is the cheapest month in which you can book a flight from Hamilton, Ontario to Ontario (average of $246). Flying from Hamilton, Ontario 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.

Reviews of airlines servicing Ontario

Read through reviews of airlines operating flights from Hamilton to Ontario, such as WestJet. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.

WestJet

7.2

Good

2,948 reviews

Reviews

1 / 20

6.0

Good

Deb,Jan 2025

YYZ - YYC

Boarding went smoothly, you didn't accept debit card for food on flight

WestJet

7.2

Good

2,948 reviews

WestJet

7.2

Good

2,948 reviews

Reviews

1 / 20

6.0

Good

Deb,Jan 2025

YYZ - YYC

Boarding went smoothly, you didn't accept debit card for food on flight

Related info for your journey

Can I find deals for flights from Hamilton to Ontario that include hotel bookings?
Yes. In addition to deals on Hamilton to Ontario flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Hamilton to Ontario?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Hamilton to Ontario.
Can I find deals for business class flights from Hamilton to Ontario?
Yes. Cheapflights offers flight deals from Hamilton 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 Hamilton, Ontario to Ontario?
Currently, August is the cheapest month in which you can book a flight from Hamilton, Ontario to Ontario (average of $246). Flying from Hamilton, Ontario 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

Browse thousands of different options on Cheapflights for your next trip

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$247+ Cheap flights from Hamilton, ON (YHM) 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 8/13. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Hamilton to Ontario with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Cheap flight deals from Hamilton to Ontario

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Find flight deals from Hamilton to Ontario

Cheapest flights from Hamilton to OntarioExplore the most affordable flight options available from Hamilton to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 18, 2025.

Explore the most affordable flight options available from Hamilton to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 18, 2025.

Cheapflights Fare Finder

Use the filters below to find and compare flights from Hamilton to Ontario that are best for you.

Best time to book a flight from Hamilton to Ontario

Have a flexible travel schedule? Discover the best time to fly to Ontario from Hamilton with our price prediction graph.

Cheapflights Insights

Everything you need to know about your flight from Hamilton to Ontario

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

Reviews of airlines servicing Ontario

Read through reviews of airlines operating flights from Hamilton to Ontario, such as WestJet. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

Find useful and relevant information for your journey from Hamilton to Ontario. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

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

How can I find direct flights from Hamilton to Ontario?

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

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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Hamilton to Ontario

See prices for flight routes from nearby airports that may be better suited for you.

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Travel Smart

Cheapest flights from Hamilton to Ontario
Explore the most affordable flight options available from Hamilton to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 18, 2025.