YUL - ONT

C$ 241 Find Cheap Flights from Montreal to Ontario

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Montreal to Ontario departing on 28/5. 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.
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These are the airlines KAYAK users have selected most often from within our search results in flight searches from Montreal to Ontario, 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 Montreal to Ontario, as well as popular online travel agencies
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Cheap Flight Deals from Montreal to Ontario (YUL-ONT)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Montreal to Ontario 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.

Recent round-trip flight deals from Montreal to Ontario

KAYAK's recommended round-trip deals from the most popular airlines that fly from Montreal to Ontario.
Discover the best prices for you by selecting your travel dates on KAYAK.
Choose your dates
United Airlines Logo
8:05 a.m. - 12:38 p.m.YUL-ONT
7h 33m1 stop
United Airlines Logo
6:41 p.m. - 8:24 a.m.ONT-YUL
10h 43m1 stop
C$ 419United Airlines
Find Deal
Tue, 20 May - Tue, 27 May
United Airlines Logo
8:10 a.m. - 5:39 p.m.YUL-ONT
12h 29m1 stop
United Airlines Logo
6:00 a.m. - 7:48 a.m.ONT-YUL
22h 48m2 stops
C$ 423United Airlines
Find Deal
Mon, 2 Jun - Thu, 5 Jun
Delta Logo
12:44 p.m. - 10:29 p.m.YUL-ONT
12h 45m1 stop
Delta Logo
10:00 p.m. - 4:04 p.m.ONT-YUL
15h 04m2 stops
C$ 424Delta
Find Deal
Tue, 27 May - Mon, 2 Jun
American Airlines Logo
3:44 p.m. - 9:50 a.m.YUL-ONT
21h 06m1 stop
American Airlines Logo
10:40 p.m. - 10:44 p.m.ONT-YUL
21h 04m1 stop
C$ 427American Airlines
Find Deal
Thu, 8 May - Mon, 12 May
United Airlines Logo
8:05 a.m. - 9:04 p.m.YUL-ONT
15h 59m1 stop
United Airlines Logo
5:05 a.m. - 11:26 p.m.ONT-YUL
15h 21m1 stop
C$ 434United Airlines
Find Deal
Fri, 20 Jun - Mon, 30 Jun
Air Canada Logo
8:05 a.m. - 3:09 p.m.YUL-ONT
10h 04m1 stop
Air Canada Logo
1:36 p.m. - 8:24 a.m.ONT-YUL
15h 48m1 stop
C$ 444Air Canada
Find Deal
Tue, 20 May - Tue, 27 May
Lufthansa Logo
8:05 a.m. - 5:27 p.m.YUL-ONT
12h 22m1 stop
Lufthansa Logo
6:34 p.m. - 8:24 a.m.ONT-YUL
10h 50m1 stop
C$ 451Lufthansa
Find Deal
Sat, 24 May - Fri, 30 May
American Airlines Logo
3:44 p.m. - 9:58 p.m.YUL-ONT
9h 14m1 stop
American Airlines Logo
11:59 p.m. - 2:54 p.m.ONT-YUL
11h 55m1 stop
C$ 477American Airlines
Find Deal
Sat, 3 May - Thu, 8 May
Delta Logo
12:45 p.m. - 7:42 p.m.YUL-ONT
9h 57m1 stop
Delta Logo
12:00 p.m. - 11:53 p.m.ONT-YUL
8h 53m1 stop
C$ 478Delta
Find Deal
Thu, 25 Sep - Sun, 5 Oct
Air Canada Logo
6:00 a.m. - 12:31 p.m.YUL-ONT
9h 31m2 stops
Air Canada Logo
1:34 p.m. - 1:51 a.m.ONT-YUL
9h 17m2 stops
C$ 832Air Canada
Find Deal
Sat, 21 Jun - Mon, 30 Jun

KAYAK's insights & trends for Montreal to Ontario flights

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

Which airlines provide the cheapest flights from Montreal to Ontario?

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 Montreal to Ontario were found on United Airlines (C$ 419) and Delta (C$ 424).

Good to know

Low season

September

High season

November

Cheapest flight

C$ 241
Best time to beat the crowds (33% less expensive on average)
Most popular time to fly (9% more expensive on average)
Flight from Montreal to Ontario

When to book flights from Montreal to Ontario

Are your dates flexible? Find out the best times to travel from Montreal to Ontario 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 Montreal to Ontario flights

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

    In the last 3 days, the lowest price for a flight from Montreal Pierre Elliott Trudeau Intl Airport to Ontario was C$ 174 for a one-way ticket and C$ 303 for a round-trip.

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

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

  • Which airline alliances offer flights from Montreal to Ontario?

    SkyTeam, Star Alliance, and oneworld are the airline alliances operating flights between Montreal and Ontario, with Star Alliance being the most commonly used for this route.

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

    The two airlines most popular with KAYAK users for flights from Montreal to Ontario are Delta and United Airlines. With an average price for the route of C$ 429 and an overall rating of 8.0, Delta is the most popular choice. United Airlines is also a great choice for the route, with an average price of C$ 749 and an overall rating of 7.4.

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

    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 Montreal to Ontario.

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

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

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

    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 Ontario with an airline and back to Montreal with another airline.

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

    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 Ontario from Montreal up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

See more FAQs

Top 3 airlines serving from Montreal to Ontario

 
See real verified KAYAK customer reviews for airlines flying from Montreal to Ontario. 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 Montreal to Ontario? 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.
8.0
DeltaOverall score based on 7920 reviews
7.9Entertainment
7.3Food
8.2Boarding
7.9Comfort
8.5Crew
Airline reviews

This had nothing to do with Delta… The flights were on time and flawless. The service was excellent. We purchased seats in (aisle/middle) comfort plus since this was a cross country flight. Unfortunately, the woman seated at the window was 300+ pounds and, as might be expected, covered up about a third of the middle seat also. there was absolutely nothing that Delta could have done about that… I just don’t know what the answer should be. If you purchase a seat, you should should be able to use the entire seat and not just the portion that someone else is not sitting/oozing in. Disappointing…there should be something that could be done….I'm just not sure what solution could be.

10.0 ExcellentGary, Apr 2025TPA - LAX
Read more Delta reviews

This had nothing to do with Delta… The flights were on time and flawless. The service was excellent. We purchased seats in (aisle/middle) comfort plus since this was a cross country flight. Unfortunately, the woman seated at the window was 300+ pounds and, as might be expected, covered up about a third of the middle seat also. there was absolutely nothing that Delta could have done about that… I just don’t know what the answer should be. If you purchase a seat, you should should be able to use the entire seat and not just the portion that someone else is not sitting/oozing in. Disappointing…there should be something that could be done….I'm just not sure what solution could be.

I love the free WiFi!! Crew was nice. Bathroom was decent. First time flying delta in a long time and I enjoyed it. Will definitely look into booking with Delta more but I think Delta is a little more expensive than the other airlines.

Seats are much much more comfortable than United, which is what I usually fly

If I pay extra for "comfort+" I expect leg room where I can stretch my legs. I was seated with an attendant's seat blocking my feet. Knee space was fine but my feet had less room than the non-"comfort+" seats. Also, don't go cheap on food when you have flights of 3+ hours. It's insulting.

Only one side of the heafphone jack work. Crew was friendly and helpful.

Great. Flight departed early and arrived early. Deplaning and baggage claim ww were quick.

They separated our seats and moved us to the back of the plane. Hundreds of dollars and thousands of miles used and this was my platinum member experience.

Since it wasn’t a Delta flight, I was not able to sit with my group and there was no entertainment.

Overall it was not that bad! The delay on the second leg to Indianapolis , was really unexpected!!

Three adults, three children. They did not give us seats together. Two seats together, in row 23, one in 13, one in 14, one in 10, and one in 17. When we got on the plane, the crew tried to ask people to move but basically threw up their hands. One person moved so we had two pairs of seats together. The 1.5 year old sat on a parent's lap (despite having paid for his own seat).

Wonderful and fast TSA checkpoint. The line was fast and our gate was close by

The gate was too far away for the connecting flight

Generally good. The aisles have gotten narrower which can slow down boarding. Flight crew was great! Healthier complimentary snacks would be appreciated. Due to earthquake in San Francisco we had to circle in air space for a bit but then had a smooth landing. I laud the flight crew for their patience ;)

We tried to upgrade to economy premium but were told this was not possible as we had booked through United Airlines (and Air Canada was operating the flight). This seemed silly given there was ample space in economy premium. Additionally, we had to wait almost 1.5 hours upon arrival to taxi to the gate. Otherwise, the crew were very pleasant and passengers were friendly.

headphone jack didnt work for the first flight and not much variety

The agents was very rude and they charged me $50 for a carry-on bag saying that it was too big and then I saw someone going on a plane with the same size bag as me

For the most part united was a good experience, how ever when they came by with the snacks and water, they completely passed by my wife and I. As we were in separate rows. On a 5 hr flight we were not offered water

Fantastic crew. Flight was delayed at last minute but we were given updates every 20 minutes and the crew was so friendly and considerate. I miss the touch screens on the back of the seats, wish they would bring that back though.

Beijing PEK to SFO. I had an economy seat on this flight. The seat comfort was acceptable. My main complaint is with the FA’s lack of personality and absence from servicing the plane, specifically restroom care (I wish I could share a pic of the restroom that I captured) and care of travelers—drink cart/availability of drinks. I'm amazed at the level of service on other International travel where a passenger is most often appreciated.

Great. Food going from Australia to the US was better than other way around, but still needs improvement in terms of quality and quantity!!!

Comfortable seats and movies entertainment available. Better experience than the flight from Toronto to Denver.

Terrible. Flight was delayed for hours and we ended up arriving at our home at 4am after 20+ hours flying.

Flight was cancelled around 45 -1hr minutes before scheduled take off time due to mechanical issues we hadn’t even boarded yet. Had to reroute to Orlando so someone had to drive 2 1/2 to come and get me… the alternative was go through Toronto and get a later flight which didn’t work for my schedule. The flight attendants barely gave anyone a smile…not the same as flying when a client/passenger was important. Very disappointed. By the way I have never ever made a complaint online about any company with feedback…even when I probably should have. The only good experience was the boarding desk associates who were very professional and got me on another flight with my checked bags…very nice team.

Actually as my experience with air Canada from Canada to Newark it was crazy for me because it was a lot of delays which for me it shouldn’t be like that, but I was able to coup with it so that was my experience I hope next time they will do good on that thanks.

Mixed experienced. Nice staff. Spacious 787 better than cramped Airbus, though my seat was broken. The bad: Way overpriced ticket and charged for food despite 6 hr flight.

Very smooth flight and the crew members were very welcoming.

Super. Planes were clean. Flights were on time. boarding was smooth. Flight attendants were professional.

ground crew at Casablanca as well as at Montreal was not helpful at all. specially at Montreal airport, very rude .

The TSA people or whatever you call them were a bit rude- I asked why I had to take my shoes off bc I'm 75 and in the USA, I don't have to. The man didn't need to snap at me. It wasn't even busy! The plane was ok, a bit small for such a long flight, but I'm very familiar with the 737 used ( I fly it often between SFO and SAN) service was ok-nothing special. If I drank alcohol I guess I would be happy with free choices. the plane was HOT and even the FA commented on it. They tried to get it cooler, but it never happened.

I have flown on many airlines all over the world, and this plane flight was the most uncomfortable I have ever experienced.

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

Information on your arrival and departure airports

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