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).

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

When flying from Marquette 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 Marquette to Ontario that include hotel bookings?

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

How can I find direct flights from Marquette to Ontario?

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

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

Yes. Cheapflights offers flight deals from Marquette 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.

$2,792+ Cheap Flights from Marquette to Ontario

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Cheap flight deals from Marquette to Ontario

One-way

One-way flights from Marquette to Ontario
Search for one-way flight options from Marquette to Ontario. Find affordable one-way fares based on user searches. Data last updated September 20, 2026.

Tue 11/177:31 am -

2 stops11h 53m

Wed 12/3112:00 am -

Nonstop0h 00m

Deal found 9/16

$2,792

Find flight deals from Marquette to Ontario

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MarquetteOntario

MQT Marquette Sawyer Intl - ONT Ontario

MQTONT

Marquette Sawyer Intl

Tue 11/17

7:31 am-4:24 pm

2 stops11h 53m

Ontario

Wed 12/31

12:00 am-3:00 am

Nonstop0h 00m

$2,792

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Deals found on 9/16

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Best time to book a flight from Marquette to Ontario

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

MQT-ONT

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.

Related info for your journey

Can I find deals for flights from Marquette to Ontario that include hotel bookings?
Yes. In addition to deals on Marquette to Ontario flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Marquette to Ontario?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Marquette to Ontario.
Can I find deals for business class flights from Marquette to Ontario?
Yes. Cheapflights offers flight deals from Marquette 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.

Browse thousands of different options on Cheapflights for your next trip

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This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 11/17. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Marquette to Ontario with Cheapflights

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2. Select your favorite providers

3. Compare prices and book

Cheap flight deals from Marquette to Ontario

One-way flights from Marquette to Ontario
Search for one-way flight options from Marquette to Ontario. Find affordable one-way fares based on user searches. Data last updated September 20, 2026.

Search for one-way flight options from Marquette to Ontario. Find affordable one-way fares based on user searches. Data last updated September 20, 2026.

Find flight deals from Marquette to Ontario

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

Best time to book a flight from Marquette to Ontario

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

Related info for your journey

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

How can I find direct flights from Marquette to Ontario?

Can I find deals for business class flights from Marquette 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 Marquette to Ontario

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

Complete your trip

Complete your trip to Ontario by adding a car rental and/or hotel reservation to your travel itinerary.

Search flights from Marquette to Ontario by cabin class

Find flights from Marquette to Ontario, based on your preferred cabin class, be it economy, premium economy, business, or first class.

Other flights to Ontario

Explore flights to Ontario departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on September 20, 2026.

Marquette and Ontario flights

Browse other Marquette and Ontario flight options. Last updated on September 20, 2026.

Other flights from Marquette

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$2,792+ Cheap flights from Marquette to Ontario (MQT - ONT)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 11/17. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Marquette 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 Marquette to Ontario

One-way flights from Marquette to OntarioSearch for one-way flight options from Marquette to Ontario. Find affordable one-way fares based on user searches. Data last updated September 20, 2026.

Search for one-way flight options from Marquette to Ontario. Find affordable one-way fares based on user searches. Data last updated September 20, 2026.

Find flight deals from Marquette to Ontario

Most accurate provider

Most trusted provider

Cheapflights Fare Finder

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

Best time to book a flight from Marquette to Ontario

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

Related info for your journey

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

How can I find direct flights from Marquette to Ontario?

Can I find deals for business class flights from Marquette 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 Marquette to Ontario

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

Complete your trip

Complete your trip to Ontario by adding a car rental and/or hotel reservation to your travel itinerary.

Search flights from Marquette to Ontario by cabin class

Find flights from Marquette to Ontario, based on your preferred cabin class, be it economy, premium economy, business, or first class.

Other flights to Ontario

Explore flights to Ontario departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on September 20, 2026.

Marquette and Ontario flights

Browse other Marquette and Ontario flight options. Last updated on September 20, 2026.

Other flights from Marquette

Browse through other flights departing from Marquette. Flights are based on user searches made on Cheapflights and were last updated on September 20, 2026.

Popular flight searches

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One-way flights from Marquette to Ontario
Search for one-way flight options from Marquette to Ontario. Find affordable one-way fares based on user searches. Data last updated September 20, 2026.