What are the cheapest airlines flying from Montreal to Ontario round-trip?

Cheapflights users have booked flights from Montreal to Ontario round-trip from C$ 671. Other airlines that can offer you cheap pricing are United Airlines, from C$ 755, and Porter Airlines, from C$ 820. These flights start at 1% lower than the current average price 3 months from now.

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

C$ 366 is the cheapest one-way deal found within the past few days, from Delta. You may also be able to find cheap deals on United Airlines and American Airlines, with prices starting from C$ 418 and C$ 424, respectively.

What is the cheapest day to fly from Montreal to Ontario?

Travelers seeking maximum savings on their Montreal to Ontario flight should consider departing on Thursday mornings when fares are most often at their lowest. Saturday mornings flights should be avoided if possible as fares are typically the most expensive at this time.

What are the most popular airlines that fly from Montreal to Ontario?

Consider Air Canada, Delta or United Airlines when booking your flight. These represent the most popular airlines when flying from Montreal to Ontario.

What is the cheapest day to fly round-trip from Montreal to Ontario?

It’s generally more expensive to depart on a Wednesday, if you have to leave on this day you can still search on Cheapflights to find great options that meet your needs.

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

When searching for a good deal, it’s best to be prepared for potential fluctuations in price. We recommend booking at least 57 days in advance, which can save you up to 31% on flights from Montreal to Ontario compared to booking the week you need them. Waiting 57 days out may not be for everyone, so we have options available for flights within the next two weeks, with the lowest price starting at C$ 481. For sooner than that we have options available in the next 3 days from C$ 514.

What is the cheapest month to fly from Montreal to Ontario?

Flights from Montreal to Ontario lean towards being more expensive in December. Prices are generally better when you fly from Montreal to Ontario in May, with the cheapest ticket starting at C$ 267.

What airport do you fly into for flights to Ontario from Montreal?

Ontario (ONT) is the airport you will fly into if you book a flight from Montreal to Ontario. You should not have trouble finding flights to Ontario from Montreal; the airport handles an average of 0 inbound flights from Montreal per day. You should also have plenty of airline options to choose from since 3 airlines have flights to the Ontario airport from Montreal. It is only a 4.9 km journey from Ontario (ONT) to Ontario’s city centre.

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

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

How can I find direct flights from Montreal to Ontario?

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

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

Yes. Cheapflights offers flight deals from Montreal 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.

C$ 366+ Flights from Montreal to Ontario

Cheap flight deals from Montreal to Ontario

Round-trip from	C$ 671
One-way from	C$ 366
Popular in	March
Cheapest in	June
Average price	C$ 171

American Airlines
14/8-16/8
4 total stops
24h 12m total
Montreal to Ontario

Search Deals

Delta
26/8
2 total stops
16h 11m total
Montreal to Ontario

Search Deals

Highest demand for flights based on searches. 22% potential increase in price (C$ 268 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 10% potential price decrease (C$ 88 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in June 2025

Search Deals

Find flight deals from Montreal to Ontario

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

Thu 14/87:50 a.m.YUL - ONT

2 stops13h 27mAmerican Airlines

Sat 16/811:59 p.m.ONT - YUL

2 stops10h 45mAmerican Airlines

Deal found 12/6C$ 671

Fri 20/612:45 p.m.YUL - ONT

1 stop12h 40mDelta

Mon 30/610:05 p.m.ONT - YUL

2 stops15h 02mDelta

Deal found 9/6C$ 736

Thu 2/108:05 a.m.YUL - ONT

1 stop17h 37mUnited Airlines

Mon 13/101:53 p.m.ONT - YUL

2 stops22h 33mUnited Airlines

Deal found 11/6C$ 755

Thu 25/98:05 a.m.YUL - ONT

1 stop12h 35mMultiple Airlines

Sun 5/106:37 p.m.ONT - YUL

1 stop17h 49mMultiple Airlines

Deal found 9/6C$ 800

Sat 26/76:45 a.m.YUL - ONT

2 stops19h 07mPorter Airlines

Sat 2/86:31 p.m.ONT - YUL

3 stops16h 29mPorter Airlines

Deal found 11/6C$ 820

Fri 3/105:00 a.m.YUL - ONT

2 stops15h 23mAir Canada

Sun 12/105:05 a.m.ONT - YUL

2 stops10h 15mAir Canada

Deal found 11/6C$ 863

Thu 7/84:05 p.m.YUL - ONT

1 stop7h 49mLufthansa

Sun 10/87:00 a.m.ONT - YUL

1 stop7h 26mLufthansa

Deal found 9/6C$ 960

Best flights from Montreal to Ontario
Discover carefully curated flight deals from Montreal to Ontario that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated 12 June 2025.

Thu 14/87:50 a.m.YUL - ONT

2 stops13h 27mAmerican Airlines

Sat 16/811:59 p.m.ONT - YUL

2 stops10h 45mAmerican Airlines

Deal found 12/6C$ 671

Thu 2/108:05 a.m.YUL - ONT

1 stop17h 37mUnited Airlines

Mon 13/101:53 p.m.ONT - YUL

2 stops22h 33mUnited Airlines

Deal found 11/6C$ 755

Thu 25/98:05 a.m.YUL - ONT

1 stop12h 35mMultiple Airlines

Sun 5/106:37 p.m.ONT - YUL

1 stop17h 49mMultiple Airlines

Deal found 9/6C$ 800

Sat 26/76:45 a.m.YUL - ONT

2 stops19h 07mPorter Airlines

Sat 2/86:31 p.m.ONT - YUL

3 stops16h 29mPorter Airlines

Deal found 11/6C$ 820

Fri 3/105:00 a.m.YUL - ONT

2 stops15h 23mAir Canada

Sun 12/105:05 a.m.ONT - YUL

2 stops10h 15mAir Canada

Deal found 11/6C$ 863

Thu 7/84:05 p.m.YUL - ONT

1 stop7h 49mLufthansa

Sun 10/87:00 a.m.ONT - YUL

1 stop7h 26mLufthansa

Deal found 9/6C$ 960

Last-minute flights from Montreal to Ontario
Discover last-minute flight deals from Montreal to Ontario. Data last updated 12 June 2025 and is based on user searches.

Fri 20/612:45 p.m.YUL - ONT

1 stop12h 40mDelta

Mon 30/610:05 p.m.ONT - YUL

2 stops15h 02mDelta

Deal found 9/6C$ 736

Fri 20/69:15 a.m.YUL - ONT

2 stops16h 30mLufthansa

Sun 22/66:41 p.m.ONT - YUL

1 stop10h 43mLufthansa

Deal found 10/6C$ 1,019

Sat 21/612:30 p.m.YUL - ONT

2 stops12h 08mAmerican Airlines

Mon 30/67:02 p.m.ONT - YUL

2 stops16h 48mAmerican Airlines

Deal found 9/6C$ 751

Sat 21/68:05 a.m.YUL - ONT

1 stop15h 59mUnited Airlines

Mon 23/61:36 p.m.ONT - YUL

1 stop15h 48mUnited Airlines

Deal found 10/6C$ 901

Thu 10/78:05 a.m.YUL - ONT

1 stop7h 27mAir Canada

Wed 16/71:34 p.m.ONT - YUL

1 stop6h 52mAir Canada

Deal found 11/6C$ 913

Fri 25/76:15 a.m.YUL - ONT

1 stop18h 51mUnited Airlines

Sat 9/87:00 a.m.ONT - YUL

1 stop7h 26mUnited Airlines

Deal found 10/6C$ 772

Sat 26/76:45 a.m.YUL - ONT

2 stops19h 07mPorter Airlines

Sat 2/86:31 p.m.ONT - YUL

3 stops16h 29mPorter Airlines

Deal found 11/6C$ 820

Sun 27/74:00 p.m.YUL - ONT

2 stops22h 53mMultiple Airlines

Sun 3/86:58 p.m.ONT - YUL

1 stop17h 31mMultiple Airlines

Deal found 12/6C$ 860

One-way flights from Montreal to Ontario
Search for one-way flight options from Montreal to Ontario. Find affordable one-way fares based on user searches. Data last updated 12 June 2025.

Tue 26/86:00 a.m.YUL - ONT

2 stops16h 11mDelta

Deal found 9/6C$ 366

Sun 13/76:45 a.m.YUL - ONT

2 stops41h 07mMultiple Airlines

Deal found 11/6C$ 417

Thu 11/98:05 a.m.YUL - ONT

1 stop12h 32mUnited Airlines

Deal found 12/6C$ 418

Wed 16/75:29 p.m.YUL - ONT

2 stops21h 31mAmerican Airlines

Deal found 11/6C$ 424

Sat 5/76:00 a.m.YUL - ONT

2 stops17h 54mAir Canada

Deal found 10/6C$ 492

Fri 4/78:10 a.m.YUL - ONT

2 stops17h 36mWestJet

Deal found 12/6C$ 604

Cheapflights Fare Finder

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

Fly from

Fly to

Route

Depart

Return

Price

MontrealOntario

YUL - ONT

YULONT

Montreal Pierre Elliott Trudeau Intl

Thu 14/8

7:50 a.m.-6:17 p.m.

2 stops13h 27m

Ontario

Sat 16/8

11:59 p.m.-1:44 p.m.

2 stops10h 45m

C$ 671

MontrealOntario

YUL - ONT

YULONT

Montreal Pierre Elliott Trudeau Intl

Thu 2/10

8:05 a.m.-10:42 p.m.

1 stop17h 37m

Ontario

Mon 13/10

1:53 p.m.-3:26 p.m.

2 stops22h 33m

C$ 755

MontrealOntario

YUL - ONT

YULONT

Montreal Pierre Elliott Trudeau Intl

Thu 25/9

8:05 a.m.-5:40 p.m.

1 stop12h 35m

Ontario

Sun 5/10

6:37 p.m.-3:26 p.m.

1 stop17h 49m

C$ 800

MontrealOntario

YUL - ONT

YULONT

Montreal Pierre Elliott Trudeau Intl

Sat 26/7

6:45 a.m.-10:52 p.m.

2 stops19h 07m

Ontario

Sat 2/8

6:31 p.m.-2:00 p.m.

3 stops16h 29m

C$ 820

MontrealOntario

YUL - ONT

YULONT

Montreal Pierre Elliott Trudeau Intl

Fri 3/10

5:00 a.m.-5:23 p.m.

2 stops15h 23m

Ontario

Sun 12/10

5:05 a.m.-6:20 p.m.

2 stops10h 15m

C$ 863

MontrealOntario

YUL - ONT

YULONT

Montreal Pierre Elliott Trudeau Intl

Thu 7/8

4:05 p.m.-8:54 p.m.

1 stop7h 49m

Ontario

Sun 10/8

7:00 a.m.-5:26 p.m.

1 stop7h 26m

C$ 960

MontrealOntario

YUL - ONT

YULONT

Montreal Pierre Elliott Trudeau Intl

Tue 26/8

6:00 a.m.-7:11 p.m.

2 stops16h 11m

C$ 366

MontrealOntario

YUL - ONT

YULONT

Montreal Pierre Elliott Trudeau Intl

Sun 13/7

6:45 a.m.-8:52 p.m.

2 stops41h 07m

C$ 417

MontrealOntario

YUL - ONT

YULONT

Montreal Pierre Elliott Trudeau Intl

Tue 14/10

6:30 p.m.-12:13 p.m.

1 stop20h 43m

C$ 418

MontrealOntario

YUL - ONT

YULONT

Montreal Pierre Elliott Trudeau Intl

Wed 16/7

5:29 p.m.-12:00 p.m.

2 stops21h 31m

C$ 424

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/6

Showing 1-10 of 12 results

Best time to book a flight from Montreal to Ontario

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

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

Currently, September is the cheapest month in which you can book a flight from Montreal to Ontario (average of C$ 290). Flying from Montreal to Ontario in December is currently the most expensive (average of C$ 461). 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.

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

A simple way to save on the total cost of your ticket is to fly from Montreal to Ontario in the afternoon. If you’re flexible enough to do this you can expect to save up to 29% on your trip compared to booking a flight at noon.

Rainfall in Ontario by month

In terms of precipitation, rainfall in Ontario ranges from 3.0 - 86.0 mm per month. February is typically the wettest month, when rainfall can reach 86.0 mm. June is typically the driest time to visit Ontario when rainfall is around 3.0 mm.

Temperature in Ontario 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 26.0 C. Travellers hoping to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 12.0 C).

Reviews of airlines servicing Ontario

Get a feel of what it's like to fly with Porter Airlines, Delta and United Airlines from Montreal to Ontario by reading reviews from past customers. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.

Porter Airlines

8.0

Very good

288 reviews

Check prices

Reviews

1 / 20

4.0

Okay

Mary,Jun 2025

FLL - YYZ

Fort Lauderdale staff was not helpful at all to try to accommodate my husband and myself to sit together. Also very surprised to get charged USD53 for each of our checked luggage, as when we booked the tickets online, the website indicated that our first checked luggage will be charged CAD50!! Very misleading!!!

Porter Airlines

8.0

Very good

288 reviews

Porter Airlines

8.0

Very good

288 reviews

Check prices

Reviews

1 / 20

4.0

Okay

Mary,Jun 2025

FLL - YYZ

Delta

8.0

Very good

7,950 reviews

Porter Airlines

8.0

Very good

288 reviews

Check prices

Reviews

1 / 20

4.0

Okay

Mary,Jun 2025

FLL - YYZ

United Airlines

7.4

Good

8,790 reviews

Porter Airlines

8.0

Very good

288 reviews

Check prices

Reviews

1 / 20

4.0

Okay

Mary,Jun 2025

FLL - YYZ

American Airlines

7.2

Good

10,000 reviews

Porter Airlines

8.0

Very good

288 reviews

Check prices

Reviews

1 / 20

4.0

Okay

Mary,Jun 2025

FLL - YYZ

WestJet

7.2

Good

2,868 reviews

Porter Airlines

8.0

Very good

288 reviews

Check prices

Reviews

1 / 20

4.0

Okay

Mary,Jun 2025

FLL - YYZ

Related info for your journey

What airport do you fly into for flights to Ontario from Montreal?
Ontario (ONT) is the airport you will fly into if you book a flight from Montreal to Ontario. You should not have trouble finding flights to Ontario from Montreal; the airport handles an average of 0 inbound flights from Montreal per day. You should also have plenty of airline options to choose from since 3 airlines have flights to the Ontario airport from Montreal. It is only a 4.9 km journey from Ontario (ONT) to Ontario’s city centre.
What are the cheapest airlines flying from Montreal to Ontario round-trip?
Cheapflights users have booked flights from Montreal to Ontario round-trip from C$ 671. Other airlines that can offer you cheap pricing are United Airlines, from C$ 755, and Porter Airlines, from C$ 820. These flights start at 1% lower than the current average price 3 months from now.
What are the cheapest airlines to fly from Montreal to Ontario one-way?
C$ 366 is the cheapest one-way deal found within the past few days, from Delta. You may also be able to find cheap deals on United Airlines and American Airlines, with prices starting from C$ 418 and C$ 424, respectively.
Can I find deals for flights from Montreal to Ontario that include hotel bookings?
Yes. In addition to deals on Montreal to Ontario flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Montreal to Ontario?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Montreal to Ontario.
Can I find deals for business class flights from Montreal to Ontario?
Yes. Cheapflights offers flight deals from Montreal 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 Montreal to Ontario?
Currently, September is the cheapest month in which you can book a flight from Montreal to Ontario (average of C$ 290). Flying from Montreal to Ontario in December is currently the most expensive (average of C$ 461). 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

Top 3 airlines flying from Montreal to Ontario

Airline	Cheapest	Average	Flexibility	On-time
Air Canada	CheapestC$ 381	AverageC$ 435	FlexibilityNo cancel fee	On-time67%	Search Air Canada flights
United Airlines	CheapestC$ 392	AverageC$ 797	FlexibilityNo cancel fee	On-time69%	Search United Airlines flights
Delta	CheapestC$ 415	AverageC$ 424	FlexibilityNo cancel fee	On-timeN/A	Search Delta flights

Fly with Cheapflights

How does Cheapflights help users find flights from Montreal to Ontario?

When you search for this flight from Montreal to Ontario, Cheapflights searches on 900+ travel sites to save you time finding great flight deals online. Additionally, we offer filter features so you can choose a preferred cabin class or airline, see different price ranges, and much more so you can book the flight for you.

Why should you use Cheapflights to find cheap flight tickets from Montreal to Ontario?

Millions of users choose and trust Cheapflights to book the best flight deals from Montreal to Ontario for free. We help you search and compare prices from hundreds of airlines for the right flight just for you.

Can Cheapflights find flights from Montreal to Ontario with no change fees?

Certainly. Search results for flights to Ontario from Montreal shown to you on Cheapflights can be narrowed down with different useful search filters, which includes flexible booking options.

Can Cheapflights notify me if prices for flights from Montreal to Ontario become cheaper?

Yes, and it’s super simple to set up. Click the bell icon next to the flight deals above and provide a valid email address to enable Price Alerts. That’s it!

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Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.

Cheap flights from Montreal to Ontario from C$ 366

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 26/8. Fares are subject to change and may not be available on all flights or dates of travel.

Cheap flight deals from Montreal to Ontario

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Find flight deals from Montreal to Ontario

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

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

Cheapflights Fare Finder

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

Best time to book a flight from Montreal to Ontario

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

Cheapflights Insights

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

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

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

Find hourly flight availability from Montreal to Ontario. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 12 June 2025.

Rainfall in Ontario by month

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

Temperature in Ontario by month

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

Reviews of airlines servicing Ontario

Get a feel of what it's like to fly with Porter Airlines, Delta and United Airlines from Montreal to Ontario by reading reviews from past customers. 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 Montreal to Ontario. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

What airport do you fly into for flights to Ontario from Montreal?

What are the cheapest airlines flying from Montreal to Ontario round-trip?

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

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

How can I find direct flights from Montreal to Ontario?

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

What is the cheapest month to book a flight from Montreal 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 Montreal to Ontario

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

Top 3 airlines flying from Montreal to Ontario

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travelers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from Montreal to Ontario?

Why should you use Cheapflights to find cheap flight tickets from Montreal to Ontario?

Can Cheapflights find flights from Montreal to Ontario with no change fees?

Can Cheapflights notify me if prices for flights from Montreal to Ontario become cheaper?

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Travel Smart

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