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Cheap flights from Ontario to Montreal from C$ 318

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Ontario to Montreal departing on 10/8. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
1 adult, Economy, 0 bags

Find the cheapest flights from Ontario to Montreal

Cheap round-trip flights

Enter your travel dates to find the best prices.
American Airlines Logo
2:27 p.m. - 2:44 p.m.
ONT
-
YUL
21h 17m
1 stop
American Airlines Logo
7:55 a.m. - 3:19 p.m.
YUL
-
ONT
10h 24m
2 stops
C$ 738American Airlines
Sun, 16 Aug - Sun, 23 Aug
United Airlines Logo
1:56 p.m. - 8:16 a.m.
ONT
-
YUL
15h 20m
1 stop
United Airlines Logo
9:45 a.m. - 10:35 p.m.
YUL
-
ONT
15h 50m
1 stop
C$ 753United Airlines
Tue, 18 Aug - Fri, 21 Aug
United Airlines Logo
1:56 p.m. - 10:40 a.m.
ONT
-
YUL
17h 44m
2 stops
United Airlines Logo
9:45 a.m. - 10:35 p.m.
YUL
-
ONT
15h 50m
1 stop
C$ 768United Airlines
Tue, 18 Aug - Fri, 21 Aug
United Airlines Logo
1:56 p.m. - 10:40 a.m.
ONT
-
YUL
17h 44m
2 stops
United Airlines Logo
6:10 a.m. - 6:11 p.m.
YUL
-
ONT
15h 01m
2 stops
C$ 775United Airlines
Tue, 18 Aug - Fri, 21 Aug
Delta Logo
10:00 p.m. - 11:39 a.m.
ONT
-
YUL
10h 39m
1 stop
Delta Logo
12:44 p.m. - 9:50 p.m.
YUL
-
ONT
12h 06m
1 stop
C$ 786Delta
Mon, 20 Jul - Wed, 29 Jul
American Airlines Logo
7:05 a.m. - 10:53 p.m.
ONT
-
YUL
12h 48m
2 stops
American Airlines Logo
2:30 p.m. - 9:34 a.m.
YUL
-
ONT
22h 04m
2 stops
C$ 799American Airlines
Sat, 8 Aug - Sat, 15 Aug
Delta Logo
10:00 p.m. - 1:41 p.m.
ONT
-
YUL
12h 41m
1 stop
Delta Logo
6:00 a.m. - 6:30 p.m.
YUL
-
ONT
15h 30m
2 stops
C$ 800Delta
Fri, 17 Jul - Sat, 22 Aug
American Airlines Logo
6:00 a.m. - 9:44 p.m.
ONT
-
YUL
12h 44m
2 stops
American Airlines Logo
7:55 a.m. - 3:19 p.m.
YUL
-
ONT
10h 24m
2 stops
C$ 807American Airlines
Sun, 16 Aug - Sun, 23 Aug
United Airlines Logo
4:20 p.m. - 8:16 a.m.
ONT
-
YUL
12h 56m
1 stop
United Airlines Logo
4:55 p.m. - 10:35 p.m.
YUL
-
ONT
8h 40m
1 stop
C$ 817United Airlines
Tue, 21 Jul - Sat, 22 Aug
Delta Logo
5:10 p.m. - 11:56 a.m.
ONT
-
YUL
15h 46m
2 stops
Delta Logo
9:30 a.m. - 10:42 a.m.
YUL
-
ONT
28h 12m
2 stops
C$ 824Delta
Tue, 21 Jul - Tue, 25 Aug

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American Airlines flights from Ontario to Montreal

Our best American Airlines deals on Ontario to Montreal flight tickets
American Airlines
16 Aug
ONT2:27 p.m.Ontario
21h 17m
1 stop
YUL2:44 p.m.Montreal Pierre Elliott Trudeau Intl
23 Aug
YUL7:55 a.m.Montreal Pierre Elliott Trudeau Intl
10h 24m
2 stops
ONT3:19 p.m.Ontario
C$ 738
American Airlines
8 Aug
ONT7:05 a.m.Ontario
12h 48m
2 stops
YUL10:53 p.m.Montreal Pierre Elliott Trudeau Intl
15 Aug
YUL2:30 p.m.Montreal Pierre Elliott Trudeau Intl
22h 04m
2 stops
ONT9:34 a.m.Ontario
C$ 799
American Airlines
16 Aug
ONT6:00 a.m.Ontario
12h 44m
2 stops
YUL9:44 p.m.Montreal Pierre Elliott Trudeau Intl
23 Aug
YUL7:55 a.m.Montreal Pierre Elliott Trudeau Intl
10h 24m
2 stops
ONT3:19 p.m.Ontario
C$ 807

United Airlines flights from Ontario to Montreal

Our best United Airlines deals on Ontario to Montreal flight tickets
United Airlines
18 Aug
ONT1:56 p.m.Ontario
15h 20m
1 stop
YUL8:16 a.m.Montreal Pierre Elliott Trudeau Intl
21 Aug
YUL9:45 a.m.Montreal Pierre Elliott Trudeau Intl
15h 50m
1 stop
ONT10:35 p.m.Ontario
C$ 753
United Airlines
18 Aug
ONT1:56 p.m.Ontario
17h 44m
2 stops
YUL10:40 a.m.Montreal Pierre Elliott Trudeau Intl
21 Aug
YUL9:45 a.m.Montreal Pierre Elliott Trudeau Intl
15h 50m
1 stop
ONT10:35 p.m.Ontario
C$ 768
United Airlines
18 Aug
ONT1:56 p.m.Ontario
17h 44m
2 stops
YUL10:40 a.m.Montreal Pierre Elliott Trudeau Intl
21 Aug
YUL6:10 a.m.Montreal Pierre Elliott Trudeau Intl
15h 01m
2 stops
ONT6:11 p.m.Ontario
C$ 775

momondo Fare Finder

 
Customize your flight search to find flights from Ontario to Montreal 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, momondo users made 96,600 searches. Data last updated 6 July 2026.
Use the filters below to find and compare flights from Ontario to Montreal that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

OntarioMontreal

ONT - YUL

ONTYUL

Ontario

Sun 16/8

2:27 p.m.-2:44 p.m.

1 stop21h 17m

Montreal Pierre Elliott Trudeau Intl

Sun 23/8

7:55 a.m.-3:19 p.m.

2 stops10h 24m

C$ 738

OntarioMontreal

ONT - YUL

ONTYUL

Ontario

Tue 18/8

1:56 p.m.-8:16 a.m.

1 stop15h 20m

Montreal Pierre Elliott Trudeau Intl

Fri 21/8

9:45 a.m.-10:35 p.m.

1 stop15h 50m

C$ 753

OntarioMontreal

ONT - YUL

ONTYUL

Ontario

Tue 18/8

1:56 p.m.-10:40 a.m.

2 stops17h 44m

Montreal Pierre Elliott Trudeau Intl

Fri 21/8

9:45 a.m.-10:35 p.m.

1 stop15h 50m

C$ 768

OntarioMontreal

ONT - YUL

ONTYUL

Ontario

Tue 18/8

1:56 p.m.-10:40 a.m.

2 stops17h 44m

Montreal Pierre Elliott Trudeau Intl

Fri 21/8

6:10 a.m.-6:11 p.m.

2 stops15h 01m

C$ 775

OntarioMontreal

ONT - YUL

ONTYUL

Ontario

Mon 20/7

10:00 p.m.-11:39 a.m.

1 stop10h 39m

Montreal Pierre Elliott Trudeau Intl

Wed 29/7

12:44 p.m.-9:50 p.m.

1 stop12h 06m

C$ 786

OntarioMontreal

ONT - YUL

ONTYUL

Ontario

Sat 8/8

7:05 a.m.-10:53 p.m.

2 stops12h 48m

Montreal Pierre Elliott Trudeau Intl

Sat 15/8

2:30 p.m.-9:34 a.m.

2 stops22h 04m

C$ 799

OntarioMontreal

ONT - YUL

ONTYUL

Ontario

Fri 17/7

10:00 p.m.-1:41 p.m.

1 stop12h 41m

Montreal Pierre Elliott Trudeau Intl

Sat 22/8

6:00 a.m.-6:30 p.m.

2 stops15h 30m

C$ 800

OntarioMontreal

ONT - YUL

ONTYUL

Ontario

Sun 16/8

6:00 a.m.-9:44 p.m.

2 stops12h 44m

Montreal Pierre Elliott Trudeau Intl

Sun 23/8

7:55 a.m.-3:19 p.m.

2 stops10h 24m

C$ 807
Quickest round-trip

OntarioMontreal

ONT - YUL

ONTYUL

Ontario

Tue 21/7

4:20 p.m.-8:16 a.m.

1 stop12h 56m

Montreal Pierre Elliott Trudeau Intl

Sat 22/8

4:55 p.m.-10:35 p.m.

1 stop8h 40m

C$ 817

OntarioMontreal

ONT - YUL

ONTYUL

Ontario

Tue 21/7

5:10 p.m.-11:56 a.m.

2 stops15h 46m

Montreal Pierre Elliott Trudeau Intl

Tue 25/8

9:30 a.m.-10:42 a.m.

2 stops28h 12m

C$ 824

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Montreal from

How to get the cheapest flight ticket from Ontario to Montreal

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

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

Our data shows that Tuesday is the least expensive day to fly to Montreal. Tickets to fly out on this day can be as low as C$ 218. When flying out on a Thursday, the most expensive travel day of the week, you can expect to see flight prices from Ontario to Montreal for around C$ 693.

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

Our data shows that the cheapest Ontario to Montreal flights are usually those with departure times in the evening. Our users have found flights to Montreal in the evening for as low as C$ 440. Flights in the morning are often more expensive with an average ticket price of C$ 643.

When to book flights from Ontario to Montreal

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

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

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

Fastest flight time

7h 28m

Direct flights

None
The fastest flight from Ontario to Montreal takes 7h 28m
There are no direct flights from Ontario to Montreal. There are no popular flight routes from Ontario to Montreal.
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Frequently asked questions about flying from Ontario to Montreal

  • How far is Ontario to Montreal by plane?

    The straight-line distance from Ontario to Montreal is 3917.7 km. Typically, this will take 7h 28m by plane in normal conditions.

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

    Prices for flights from Ontario Airport to Montreal refresh daily.

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

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Ontario Airport to Montreal.

  • What documentation or ID do you need to fly to Montreal?

    The travel and health documents required for your trip to Montreal can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Montreal. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

Why use momondo?

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

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Ontario to Montreal for you.

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

Flights from Ontario to Montreal with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

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

momondo helps you find the best flight between Ontario and Montreal by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

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

Yes momondo offers price alerts on flights to Montreal from Ontario. 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.

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Find better results for your trip to Canada

Fly into one of these airports located in Montreal

Airports listed have a maximum distance of 15.1 km from Montreal
Montreal St Hubert Airport
Montreal Pierre Elliott Trudeau Intl Airport