ONT - YUL

$187 Find Cheap Flights from Ontario to Montreal

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Ontario to Montreal departing on 3/29. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to Montreal Pierre Elliott Trudeau Intl Airport

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Ontario to Montreal, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Ontario to Montreal, as well as popular online travel agencies
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Everything you should know

Cheapest round-trip
$566
American Airlines
Sat 4/18Sat 4/25
ONT - YUL • 2 stops
Cheapest one-way
$187
Multiple Airlines
Sun 3/29
ONT - YUL • 2 stops
Top airlines
American Airlines
Cheapest • from $566 (round-trip)
United Airlines
Best reviews • 7.4 score
Airline reviews
Airline reviews
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+1
Airline reviews
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Booking Insights
Flight Deals

Cheap Flights from Ontario to Montreal (ONT-YUL)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Ontario to Montreal that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Ontario to Montreal

Sat, Apr 18 - Sat, Apr 25
American Airlines Logo
4:52 pm - 11:44 am
ONT
-
YUL
15h 52m
2 stops
American Airlines Logo
7:45 am - 7:32 pm
YUL
-
ONT
14h 47m
2 stops
$566American Airlines
Fri, Feb 27 - Tue, Mar 3
Delta Logo
1:15 pm - 8:42 am
ONT
-
YUL
16h 27m
2 stops
Delta Logo
9:29 am - 9:05 pm
YUL
-
ONT
14h 36m
2 stops
$611Delta
Wed, May 6 - Wed, May 13
Delta Logo
12:49 pm - 8:43 am
ONT
-
YUL
16h 54m
2 stops
Delta Logo
9:28 am - 10:09 pm
YUL
-
ONT
15h 41m
2 stops
$631Delta
Sat, Apr 18 - Sat, Apr 25
American Airlines Logo
10:26 pm - 10:58 pm
ONT
-
YUL
21h 32m
1 stop
American Airlines Logo
7:45 am - 7:32 pm
YUL
-
ONT
14h 47m
2 stops
$658American Airlines
Sun, Mar 1 - Wed, Mar 4
Delta Logo
10:20 pm - 6:35 pm
ONT
-
YUL
17h 15m
2 stops
Delta Logo
9:29 am - 9:05 pm
YUL
-
ONT
14h 36m
2 stops
$662Delta
Thu, May 7 - Tue, May 19
American Airlines Logo
7:35 pm - 11:44 am
ONT
-
YUL
37h 09m
2 stops
American Airlines Logo
12:30 pm - 8:39 am
YUL
-
ONT
23h 09m
2 stops
$665American Airlines
Fri, Mar 13 - Wed, Mar 18
Delta Logo
12:57 pm - 11:45 pm
ONT
-
YUL
7h 48m
1 stop
Delta Logo
9:20 am - 9:00 pm
YUL
-
ONT
14h 40m
2 stops
$671Delta
Fri, May 8 - Wed, May 13
Delta Logo
7:00 am - 8:43 am
ONT
-
YUL
22h 43m
2 stops
Delta Logo
9:28 am - 10:09 pm
YUL
-
ONT
15h 41m
2 stops
$672Delta
Tue, May 12 - Tue, May 19
Delta Logo
10:59 pm - 6:53 pm
ONT
-
YUL
16h 54m
2 stops
Delta Logo
12:45 pm - 10:09 pm
YUL
-
ONT
12h 24m
1 stop
$680Delta
Tue, May 12 - Mon, May 18
Delta Logo
10:59 pm - 6:53 pm
ONT
-
YUL
16h 54m
2 stops
Delta Logo
3:00 pm - 11:44 pm
YUL
-
ONT
11h 44m
2 stops
$686Delta
Booking Insights

KAYAK's insights & trends for Ontario to Montreal flights

Get data-powered insights and trends into flights from Ontario to Montreal to help you find the cheapest flights, the best time to fly and much more.

Which airlines provide the cheapest flights from Ontario to Montreal?

The cheapest round-trip price for the route for each airline clicked by KAYAK users in the last 72 hours.

In the past 3 days, the cheapest round-trip tickets from Ontario to Montreal were found on American Airlines ($566) and Delta ($611).

Which airlines fly non-stop between Ontario and Montreal Pierre Elliott Trudeau Intl Airport?

Airline and price data is aggregated from results in KAYAK’s search results from the last 2 weeks for round-trip flights from Ontario to Montreal Pierre Elliott Trudeau Intl Airport.

There are 2 airlines that fly nonstop from Ontario to Montreal Pierre Elliott Trudeau Intl Airport. They are Air Canada and United Airlines. The cheapest airline for this route is United Airlines, with the best round-trip deal found costing $219. On average, the best prices for this route can be found at Air Canada.

Good to know

Cheapest flight$187
Flight from Ontario to Montreal

When to book flights from Ontario to Montreal

Are your dates flexible? Find out the best times to travel from Ontario to Montreal based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking Ontario to Montreal flights

  • What is the cheapest flight from Ontario to Montreal Pierre Elliott Trudeau Intl Airport?

    In the last 3 days, the lowest price for a flight from Ontario to Montreal Pierre Elliott Trudeau Intl Airport was $187 for a one-way ticket and $566 for a round-trip.

  • Do I need a passport to fly between Ontario and Montreal?

    Yes, you’ll need a passport to travel to Montreal from Ontario.

  • Which aircraft models fly most regularly from Ontario to Montreal?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from Ontario to Montreal?

    Star Alliance is the only airline alliance operating flights between Ontario and Montreal.

  • Which is the best airline for flights from Ontario to Montreal, United Airlines or Air Canada?

    The two airlines most popular with KAYAK users for flights from Ontario to Montreal are United Airlines and Air Canada. With an average price for the route of $614 and an overall rating of 7.4, United Airlines is the most popular choice. Air Canada is also a great choice for the route, with an average price of $600 and an overall rating of 7.1.

  • How does KAYAK find such low prices on flights from Ontario to Montreal?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Ontario to Montreal.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Ontario to Montreal?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Montreal from Ontario is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Ontario to Montreal?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Montreal with an airline and back to Ontario with another airline. Booking your flights between Ontario and YUL can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Ontario to Montreal?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Montreal from Ontario up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top airlines flying from Ontario to Montreal

 
See real verified KAYAK customer reviews for airlines flying from Ontario to Montreal. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Ontario to Montreal? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.4
United AirlinesOverall score based on 9215 reviews
8.1Crew
7.7Boarding
7.1Entertainment
6.6Food
7.3Comfort
Airline reviews

The food was terrible this time. Otherwise pleasant, quiet, on-time.

8.0 ExcellentAnonymous, Jan 2026
SAN - MUC
Read more United Airlines reviews

The food was terrible this time. Otherwise pleasant, quiet, on-time.

It was a pretty standard flight... until the almost hour and a half spent on the taxi way. I get that the weather has been poor but the delay had nothing to do with the weather and more to do with a plane with several issues tying up the gate. I get that that happens from time to time but this has been EVERY flight I've been on for the past 5 years and I fly 3 to 5 times a year. This isn't just United... it's American, it's Delta. It's an issue with the entire industry. I work for UPS and packages on a cargo plane get better service than people do these days. Anymore I HATE flying.

The flight crew where really good. Better then the crew from BNE to SFO

Food should be changed in menu Many muslims travels in this airlime they need to add one Halal meal

left on time, reasonable boarding process arrived early luggage came out quickly

Some flight attendants were great others were cranky. Seats were very tight and sitting on an aisle was very hard as the carts and people walking constantly bumped shoulder and arm.

It was great with United overall except for two things. 1) It was a 5-hour flight and we were with kids, so we were asking for extra snacks. They were extremely reticent to dole them out even though there wasn't any meal and the kids were starting to hit their limit towards the end. 2) Baggage didn't arrive until 80 minutes after we landed.

I’m so sorry, I can’t remember her name, I believe it was Dimpti. She was stellar, also a mature Asian flight attendant, lots of flowers in her hair, just as amazing! But literally the crew was AWESOME . Only downside is there weren’t any charging outlets. Maybe I needed to ask a flight attendant , but it would’ve been nice to have one easily accessible.

I boarded flight UA#1318 at Sacramento International Airport going back to Houston TX. The flight was scheduled at 5:10am. I was able to check in virtually using the United Airlines app. When I entered the airport, there was no one outside assisting with checked bags as it was for Delta Airlines. Immediately upon entering, there was a LONG, EXTREMELY LONG line to the kiosks to get boarding passes. I stand in line to get boarding passes then had to move to ANOTHER EXTREMELY LONG line to get my bags checked in. While standing in this line, we noticed an agent taking customers to 3 at a time to her station to check their bags in. Lucky for me, she called me back, checked my bags for me and I was on my way. I then encountered another long line at the TSA check and to avoid I ending up having to sign up for CLEAR to bypass it. So glad, I did.,...Both of my flights were great with no issues, butthe check in progress at Bush Airport was so much smoother. Check-in at SMF airport needs to be anaylzed and corrected. Do better United, I know you can....thanks

Pushed back only to get deplaned due to a tire damaged by ground crew. They did at least go pretty fast. The bathrooms should be banned under the Geneva convention. No room to even sit straight on the toilet. The under-seat entertainment units block what little leg room there is.

Couldn't fit knees, only 1 toilet working, didn't get anything to drink cause the stewards were not able to get to us

Our biggest complaint about Air Canada is that if you don’t like your seat during check-in, there’s a fee to move elsewhere. On our flight from YUL to FFL, we were charged to change seats—just regular seats. What’s maddening is that the plane wasn’t even full; there were even a few people sleeping in the middle row sections (entire rows, completely empty), using them as beds. In my opinion, charging passengers for seat changes is a cash grab by Air Canada. They are definitely not the airline they were back in the day. I suppose they need to gouge the consumer now that they pay their attendants while on ground. One out of 10.

Allow me to book extra bag check in as free though I packed in 1 luggage but that was 7 LBS overweight so make another bag to free check in.

Plane left an hour late, I missed my connection and my bow case was never even loaded on the plane in VA. I deal with this type of nonsense everytime I fly air canada.

It was a smooth flight both in the sky and landing!

Fare was great, seat comfort the opposite as cushion was worn out. Ok for 2 hour flight, not for 4.5 hour flight..

For the price, it was a really good experience. There was no entertainment on board, so I couldn't really rate this, and I didn't order a meal. I appreciated that there was a free glass of wine.

Very bad, flight was cancelled due to strike and staff was unable to rebook us

Air Canada is my new fave airline..I plan to use when I can. No complaints at all just rave compliments for the staff and airline.

Strike pissed me n stranded in middle of no where

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

Information on your arrival and departure airports