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Cheap flights from Ontario to Montreal from C$ 346

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 30/9. 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

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Find the cheapest flights from Ontario to Montreal

Cheap round-trip flights

Enter your travel dates to find the best prices.
American Airlines Logo
7:14 p.m. - 11:43 a.m.
ONT
-
YUL
13h 29m
2 stops
American Airlines Logo
7:17 a.m. - 6:19 p.m.
YUL
-
ONT
14h 02m
2 stops
C$ 803American Airlines
Fri, 24 Jul - Tue, 28 Jul
American Airlines Logo
11:59 p.m. - 2:44 p.m.
ONT
-
YUL
11h 45m
1 stop
American Airlines Logo
7:29 a.m. - 6:15 p.m.
YUL
-
ONT
13h 46m
2 stops
C$ 840American Airlines
Thu, 20 Aug - Tue, 25 Aug
American Airlines Logo
8:01 p.m. - 1:46 p.m.
ONT
-
YUL
14h 45m
2 stops
American Airlines Logo
7:29 a.m. - 6:15 p.m.
YUL
-
ONT
13h 46m
2 stops
C$ 847American Airlines
Thu, 20 Aug - Tue, 25 Aug
Delta Logo
12:07 p.m. - 11:57 p.m.
ONT
-
YUL
8h 50m
1 stop
Delta Logo
9:30 a.m. - 9:48 p.m.
YUL
-
ONT
15h 18m
2 stops
C$ 851Delta
Tue, 26 May - Thu, 28 May
Delta Logo
10:59 p.m. - 6:53 p.m.
ONT
-
YUL
16h 54m
2 stops
Delta Logo
12:45 p.m. - 9:56 p.m.
YUL
-
ONT
12h 11m
1 stop
C$ 861Delta
Mon, 14 Sep - Fri, 18 Sep
Delta Logo
10:59 p.m. - 6:53 p.m.
ONT
-
YUL
16h 54m
2 stops
Delta Logo
4:55 p.m. - 11:44 p.m.
YUL
-
ONT
9h 49m
2 stops
C$ 869Delta
Mon, 14 Sep - Fri, 18 Sep
Delta Logo
12:07 p.m. - 11:57 p.m.
ONT
-
YUL
8h 50m
1 stop
Delta Logo
12:40 p.m. - 6:36 p.m.
YUL
-
ONT
8h 56m
1 stop
C$ 870Delta
Thu, 28 May - Wed, 3 Jun
American Airlines Logo
11:59 p.m. - 2:44 p.m.
ONT
-
YUL
11h 45m
1 stop
American Airlines Logo
7:29 a.m. - 6:21 p.m.
YUL
-
ONT
13h 52m
2 stops
C$ 873American Airlines
Tue, 9 Jun - Tue, 16 Jun
Delta Logo
12:07 p.m. - 11:57 p.m.
ONT
-
YUL
8h 50m
1 stop
Delta Logo
12:40 p.m. - 6:36 p.m.
YUL
-
ONT
8h 56m
1 stop
C$ 874Delta
Thu, 28 May - Wed, 3 Jun
American Airlines Logo
7:13 p.m. - 2:44 p.m.
ONT
-
YUL
16h 31m
2 stops
American Airlines Logo
7:29 a.m. - 6:21 p.m.
YUL
-
ONT
13h 52m
2 stops
C$ 881American Airlines
Tue, 9 Jun - Tue, 16 Jun

United Airlines flights from Ontario to Montreal

Our best United Airlines deals on Ontario to Montreal flight tickets
United Airlines
2 Jul
ONT1:50 p.m.Ontario
17h 50m
2 stops
YUL10:40 a.m.Montreal Pierre Elliott Trudeau Intl
17 Jul
YUL9:45 a.m.Montreal Pierre Elliott Trudeau Intl
16h 06m
1 stop
ONT10:51 p.m.Ontario
C$ 987
United Airlines
4 Jul
ONT6:10 a.m.Ontario
8h 20m
1 stop
YUL5:30 p.m.Montreal Pierre Elliott Trudeau Intl
11 Jul
YUL6:00 a.m.Montreal Pierre Elliott Trudeau Intl
18h 55m
2 stops
ONT9:55 p.m.Ontario
C$ 993
United Airlines
20 Jun
ONT5:45 a.m.Ontario
13h 21m
2 stops
YUL10:06 p.m.Montreal Pierre Elliott Trudeau Intl
7 Jul
YUL11:23 a.m.Montreal Pierre Elliott Trudeau Intl
14h 14m
2 stops
ONT10:37 p.m.Ontario
C$ 1,001

Delta flights from Ontario to Montreal

Our best Delta deals on Ontario to Montreal flight tickets
Delta
26 May
ONT12:07 p.m.Ontario
8h 50m
1 stop
YUL11:57 p.m.Montreal Pierre Elliott Trudeau Intl
28 May
YUL9:30 a.m.Montreal Pierre Elliott Trudeau Intl
15h 18m
2 stops
ONT9:48 p.m.Ontario
C$ 851
Delta
14 Sep
ONT10:59 p.m.Ontario
16h 54m
2 stops
YUL6:53 p.m.Montreal Pierre Elliott Trudeau Intl
18 Sep
YUL12:45 p.m.Montreal Pierre Elliott Trudeau Intl
12h 11m
1 stop
ONT9:56 p.m.Ontario
C$ 861
Delta
14 Sep
ONT10:59 p.m.Ontario
16h 54m
2 stops
YUL6:53 p.m.Montreal Pierre Elliott Trudeau Intl
18 Sep
YUL4:55 p.m.Montreal Pierre Elliott Trudeau Intl
9h 49m
2 stops
ONT11:44 p.m.Ontario
C$ 869

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 17 May 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

Fri 24/7

7:14 p.m.-11:43 a.m.

2 stops13h 29m

Montreal Pierre Elliott Trudeau Intl

Tue 28/7

7:17 a.m.-6:19 p.m.

2 stops14h 02m

C$ 803

OntarioMontreal

ONT - YUL

ONTYUL

Ontario

Thu 20/8

11:59 p.m.-2:44 p.m.

1 stop11h 45m

Montreal Pierre Elliott Trudeau Intl

Tue 25/8

7:29 a.m.-6:15 p.m.

2 stops13h 46m

C$ 840

OntarioMontreal

ONT - YUL

ONTYUL

Ontario

Thu 20/8

8:01 p.m.-1:46 p.m.

2 stops14h 45m

Montreal Pierre Elliott Trudeau Intl

Tue 25/8

7:29 a.m.-6:15 p.m.

2 stops13h 46m

C$ 847

OntarioMontreal

ONT - YUL

ONTYUL

Ontario

Tue 26/5

12:07 p.m.-11:57 p.m.

1 stop8h 50m

Montreal Pierre Elliott Trudeau Intl

Thu 28/5

9:30 a.m.-9:48 p.m.

2 stops15h 18m

C$ 851

OntarioMontreal

ONT - YUL

ONTYUL

Ontario

Mon 14/9

10:59 p.m.-6:53 p.m.

2 stops16h 54m

Montreal Pierre Elliott Trudeau Intl

Fri 18/9

12:45 p.m.-9:56 p.m.

1 stop12h 11m

C$ 861

OntarioMontreal

ONT - YUL

ONTYUL

Ontario

Mon 14/9

10:59 p.m.-6:53 p.m.

2 stops16h 54m

Montreal Pierre Elliott Trudeau Intl

Fri 18/9

4:55 p.m.-11:44 p.m.

2 stops9h 49m

C$ 869
Quickest round-trip

OntarioMontreal

ONT - YUL

ONTYUL

Ontario

Thu 28/5

12:07 p.m.-11:57 p.m.

1 stop8h 50m

Montreal Pierre Elliott Trudeau Intl

Wed 3/6

12:40 p.m.-6:36 p.m.

1 stop8h 56m

C$ 870

OntarioMontreal

ONT - YUL

ONTYUL

Ontario

Tue 9/6

11:59 p.m.-2:44 p.m.

1 stop11h 45m

Montreal Pierre Elliott Trudeau Intl

Tue 16/6

7:29 a.m.-6:21 p.m.

2 stops13h 52m

C$ 873

OntarioMontreal

ONT - YUL

ONTYUL

Ontario

Thu 28/5

12:07 p.m.-11:57 p.m.

1 stop8h 50m

Montreal Pierre Elliott Trudeau Intl

Wed 3/6

12:40 p.m.-6:36 p.m.

1 stop8h 56m

C$ 874

OntarioMontreal

ONT - YUL

ONTYUL

Ontario

Tue 9/6

7:13 p.m.-2:44 p.m.

2 stops16h 31m

Montreal Pierre Elliott Trudeau Intl

Tue 16/6

7:29 a.m.-6:21 p.m.

2 stops13h 52m

C$ 881

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$ 211. 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$ 604.

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$ 390. Flights in the morning are often more expensive with an average ticket price of C$ 553.

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.
Search flight deals

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