What is the cheapest airline that flies from Montreal to Ontario?

American Airlines, Delta, and United Airlines are the most popular carriers operating from Montreal to Ontario

Which airlines fly to Ontario?

Air Canada, Porter Airlines and United Airlines are the top three most popular airlines that fly to Ontario from Montreal according to our data. Air Canada is the first choice among our users, with 51% of people opting to fly with this airline when travelling to Ontario. Keep in mind that there are 7 different airlines that fly to Ontario on a routine basis, so you have a few additional options to choose from.

When did momondo last update prices for flights from Montreal to Ontario Airport?

Prices for flights from Montreal to Ontario Airport are updated daily.

How many operators does momondo search for flights from Montreal to Ontario Airport?

As of July 2025, there are 3 operators available to choose from for flights from Montreal to Ontario Airport.

How old do you have to be to fly from Montreal to Ontario Airport?

The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Montreal to Ontario Airport.

What documentation or ID do you need to fly to Ontario Airport?

The required travel and health documents for your Ontario Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Ontario Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

C$ 327 Cheap Flights from Montreal to Ontario in 2025

1 adult

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Find the cheapest flights from Montreal to Los Angeles

Round-trip

One-way

Last minute

Cheap round-trip flights

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

16h 11m2 stops

11:45 a.m. - 10:07 a.m.ONT-YUL

19h 22m2 stops

C$ 666Delta

Find Deal

Wed, 27 Aug - Wed, 3 Sep

6:00 a.m. - 8:33 p.m.YUL-ONT

17h 33m2 stops

6:50 p.m. - 8:05 p.m.ONT-YUL

22h 15m1 stop

C$ 780United Airlines

Find Deal

Wed, 27 Aug - Wed, 3 Sep

7:00 a.m. - 7:15 p.m.YUL-ONT

15h 15m2 stops

10:00 p.m. - 11:34 a.m.ONT-YUL

10h 34m1 stop

C$ 799Delta

Find Deal

Thu, 11 Sep - Thu, 18 Sep

8:05 a.m. - 5:37 p.m.YUL-ONT

12h 32m1 stop

6:00 a.m. - 8:16 a.m.ONT-YUL

23h 16m1 stop

C$ 821United Airlines

Find Deal

Wed, 20 Aug - Sun, 24 Aug

8:05 a.m. - 5:37 p.m.YUL-ONT

12h 32m1 stop

5:10 a.m. - 11:26 p.m.ONT-YUL

15h 16m1 stop

C$ 838United Airlines

Find Deal

Wed, 27 Aug - Sun, 31 Aug

9:45 a.m. - 5:29 p.m.YUL-ONT

10h 44m2 stops

6:38 p.m. - 5:26 p.m.ONT-YUL

19h 48m2 stops

C$ 860United Airlines

Find Deal

Thu, 11 Sep - Thu, 18 Sep

3:44 p.m. - 10:48 p.m.YUL-ONT

10h 04m1 stop

11:59 p.m. - 2:54 p.m.ONT-YUL

11h 55m1 stop

C$ 941American Airlines

Find Deal

Mon, 18 Aug - Tue, 26 Aug

4:00 p.m. - 11:57 p.m.YUL-ONT

10h 57m1 stop

10:34 p.m. - 1:49 p.m.ONT-YUL

12h 15m1 stop

C$ 974American Airlines

Find Deal

Thu, 20 Nov - Mon, 1 Dec

6:45 a.m. - 10:40 p.m.YUL-ONT

18h 55m3 stops

1:09 a.m. - 7:30 a.m.ONT-YUL

27h 21m3 stops

C$ 1,109

Find Deal

Thu, 11 Sep - Wed, 17 Sep

7:00 a.m. - 10:40 p.m.YUL-ONT

18h 40m2 stops

6:00 a.m. - 12:37 a.m.ONT-YUL

15h 37m3 stops

C$ 1,143

Find Deal

Thu, 11 Sep - Thu, 18 Sep

American Airlines flights from Montreal to Ontario

Our best American Airlines deals on Montreal to Ontario flight tickets

American Airlines

18 Aug

YUL3:44 p.m.Montreal Pierre Elliott Trudeau Intl

10h 04m

1 stop

ONT10:48 p.m.Ontario

26 Aug

ONT11:59 p.m.Ontario

11h 55m

1 stop

YUL2:54 p.m.Montreal Pierre Elliott Trudeau Intl

C$ 941

Find similar

American Airlines

20 Nov

YUL4:00 p.m.Montreal Pierre Elliott Trudeau Intl

10h 57m

1 stop

ONT11:57 p.m.Ontario

1 Dec

ONT10:34 p.m.Ontario

12h 15m

1 stop

YUL1:49 p.m.Montreal Pierre Elliott Trudeau Intl

C$ 974

Find similar

American Airlines

16 Aug

YUL2:35 p.m.Montreal Pierre Elliott Trudeau Intl

10h 04m

1 stop

ONT9:39 p.m.Ontario

26 Aug

ONT11:29 p.m.Ontario

11h 15m

1 stop

YUL1:44 p.m.Montreal Pierre Elliott Trudeau Intl

C$ 993

Find similar

United Airlines flights from Montreal to Ontario

Our best United Airlines deals on Montreal to Ontario flight tickets

United Airlines

27 Aug

YUL6:00 a.m.Montreal Pierre Elliott Trudeau Intl

17h 33m

2 stops

ONT8:33 p.m.Ontario

3 Sep

ONT6:50 p.m.Ontario

22h 15m

1 stop

YUL8:05 p.m.Montreal Pierre Elliott Trudeau Intl

C$ 780

Find similar

United Airlines

20 Aug

YUL8:05 a.m.Montreal Pierre Elliott Trudeau Intl

12h 32m

1 stop

ONT5:37 p.m.Ontario

24 Aug

ONT6:00 a.m.Ontario

23h 16m

1 stop

YUL8:16 a.m.Montreal Pierre Elliott Trudeau Intl

C$ 821

Find similar

United Airlines

27 Aug

YUL8:05 a.m.Montreal Pierre Elliott Trudeau Intl

12h 32m

1 stop

ONT5:37 p.m.Ontario

31 Aug

ONT5:10 a.m.Ontario

15h 16m

1 stop

YUL11:26 p.m.Montreal Pierre Elliott Trudeau Intl

C$ 838

Find similar

Fly from

Fly to

Route

Depart

Return

Price

MontrealOntario

YUL - ONT

YULONT

Montreal Pierre Elliott Trudeau Intl

Wed 27/8

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

2 stops16h 11m

Ontario

Wed 3/9

11:45 a.m.-10:07 a.m.

2 stops19h 22m

C$ 666

MontrealOntario

YUL - ONT

YULONT

Montreal Pierre Elliott Trudeau Intl

Wed 27/8

6:00 a.m.-8:33 p.m.

2 stops17h 33m

Ontario

Wed 3/9

6:50 p.m.-8:05 p.m.

1 stop22h 15m

C$ 780

MontrealOntario

YUL - ONT

YULONT

Montreal Pierre Elliott Trudeau Intl

Thu 11/9

7:00 a.m.-7:15 p.m.

2 stops15h 15m

Ontario

Thu 18/9

10:00 p.m.-11:34 a.m.

1 stop10h 34m

C$ 799

MontrealOntario

YUL - ONT

YULONT

Montreal Pierre Elliott Trudeau Intl

Wed 20/8

8:05 a.m.-5:37 p.m.

1 stop12h 32m

Ontario

Sun 24/8

6:00 a.m.-8:16 a.m.

1 stop23h 16m

C$ 821

MontrealOntario

YUL - ONT

YULONT

Montreal Pierre Elliott Trudeau Intl

Wed 27/8

8:05 a.m.-5:37 p.m.

1 stop12h 32m

Ontario

Sun 31/8

5:10 a.m.-11:26 p.m.

1 stop15h 16m

C$ 838

MontrealOntario

YUL - ONT

YULONT

Montreal Pierre Elliott Trudeau Intl

Thu 11/9

9:45 a.m.-5:29 p.m.

2 stops10h 44m

Ontario

Thu 18/9

6:38 p.m.-5:26 p.m.

2 stops19h 48m

C$ 860

MontrealOntario

YUL - ONT

YULONT

Montreal Pierre Elliott Trudeau Intl

Mon 18/8

3:44 p.m.-10:48 p.m.

1 stop10h 04m

Ontario

Tue 26/8

11:59 p.m.-2:54 p.m.

1 stop11h 55m

C$ 941

MontrealOntario

YUL - ONT

YULONT

Montreal Pierre Elliott Trudeau Intl

Thu 20/11

4:00 p.m.-11:57 p.m.

1 stop10h 57m

Ontario

Mon 1/12

10:34 p.m.-1:49 p.m.

1 stop12h 15m

C$ 974

MontrealOntario

YUL - ONT

YULONT

Montreal Pierre Elliott Trudeau Intl

Thu 11/9

6:45 a.m.-10:40 p.m.

3 stops18h 55m

Ontario

Wed 17/9

1:09 a.m.-7:30 a.m.

3 stops27h 21m

C$ 1,109

MontrealOntario

YUL - ONT

YULONT

Montreal Pierre Elliott Trudeau Intl

Thu 11/9

7:00 a.m.-10:40 p.m.

2 stops18h 40m

Ontario

Thu 18/9

6:00 a.m.-12:37 a.m.

3 stops15h 37m

C$ 1,143

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from Montreal to Ontario

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

Prices

Airlines

What is the cheapest month to fly to Ontario?

The month of June is, on average, the cheapest month to fly to Ontario from Montreal, with most prices found around C$ 172. The month of October is another great option to travel to Ontario, with average flight prices from Montreal averaging around C$ 391.

What is the cheapest day to depart on your flight to Ontario?

On average, the least expensive day to fly to Ontario from Montreal is on a Thursday. momondo users have found tickets for Thursday departures for as low as C$ 412. However, this price may fluctuate depending on the airline, the season, and holidays. On the other hand, Saturday is the most expensive day to depart from Montreal because it is more convenient for both business and leisure travellers. As a result, prices tend to be around C$ 915.

What is the cheapest time of day to depart on your flight to Ontario?

Our data shows that the cheapest Montreal to Ontario flights are usually those with departure times in the afternoon. Our users have found flights to Ontario in the afternoon for as low as C$ 433. Try not to purchase tickets at noon because they tend to be around C$ 605. Of course, these prices can vary depending on the time of year and what airport you fly to.

When to book flights from Montreal to Ontario

Are you open to changing your travel dates? Check out the ideal times to fly from Montreal to Ontario according to our flight data. Find out which month and days have the cheapest flights.

Estimated round-trip price

Cheap Montreal to Ontario (YMQ to ONT) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Montreal to Ontario

Best price found	C$ 348
Fastest flight time	7h 27m
Direct flights	None
Airports in Ontario	1 airport

The best one-way flight to Ontario from Montreal in the past 72 hours is C$ 348. The best round-trip flight deal from Montreal to Ontario found on momondo in the last 72 hours is C$ 666.

The fastest flight from Montreal to Ontario takes 7h 27m

There are no direct flights from Montreal to Ontario. Popular non-direct route for this connection is Montreal Pierre Elliott Trudeau Intl Airport - Ontario Airport.

There is 1 airport near Ontario: Ontario (ONT)

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How far is Montreal to Ontario by plane?
A flight from Montreal to Ontario will travel around 3917.7 km. In terms of flight time, this usually takes a little over 7h 27m.
When did momondo last update prices for flights from Montreal to Ontario Airport?
Prices for flights from Montreal to Ontario Airport are updated daily.
How many operators does momondo search for flights from Montreal to Ontario Airport?
As of July 2025, there are 3 operators available to choose from for flights from Montreal to Ontario Airport.
How old do you have to be to fly from Montreal to Ontario Airport?
The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Montreal to Ontario Airport.
What documentation or ID do you need to fly to Ontario Airport?
The required travel and health documents for your Ontario Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Ontario Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.
What is the most popular airline from Montreal to Ontario?
momondo data reveals that the most frequently booked airline on the route from Montreal to Ontario is Air Canada, representing 58% of all bookings. The subsequent popular airline is United Airlines at 42%.

Best airlines flying from Montreal to Ontario

Compare and see reviews for airlines that fly from Montreal to Ontario with momondo

Airline	Rating	Free Cancellation	Price
United Airlines	PriceFrom C$ 395	Free Cancellation	Rating 7.4 8,896 reviews	Search United Airlines flights
Air Canada	PriceFrom C$ 398	Free Cancellation	Rating 7.1 9,837 reviews	Search Air Canada flights
Delta	PriceFrom C$ 417	Free Cancellation	Rating 8.0 7,980 reviews	Search Delta flights

Why use momondo?

Why should I use momondo to find a flight deal from Montreal to Ontario?

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Montreal to Ontario . Millions of users trust and use momondo every year so you are in good hands.

Can I find flights from Montreal to Ontario with flexible booking policies on momondo?

momondo does allow users to show only those flights to Ontario from Montreal which offer a flexible booking policy as well as other useful filters and features.

How can momondo help me find flights from Montreal to Ontario?

Once you have performed a search for Montreal to Ontario flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

I’m not ready to book a flight from Montreal to Ontario right now. Can momondo alert me if prices change?

Yes momondo offers price alerts on flights to Ontario from Montreal. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.