Montreal to Ontario flights

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Lowest observed: €187, departing 5 Dec 2026 (Last checked: 30 Sep 2026)One-way fareCheck live prices for this route
Airlines seen: Air Canada, Air Transat, Frontier Airlines, Porter Airlines Canada, United Airlines
Typical journey time: 17h 40m

Lowest observed

€187

Average observed

€268

Cheapest month

December 2026

Last checked

8 Oct 2026

Observed fares. Prices may change.

Your next trip, last seen at €187

Lowest observed

5 Dec 2026

Porter Airlines Canada · 2 stops · One way

Cheapest observed day · Last checked: 30 Sep 2026

Departure

06:45

When to fly

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Find the dates that work for you

The lowest fare we observed for each month. Open a month to see its days, then pick your outbound and return. A day with no price is one we will search for you.

Prices are for observed departure and return date pairs. No data does not mean no flights.

Short answer

We have seen Air Canada fares from Montreal to Ontario. The lowest fare our own searches returned is €187, seen on 30 Sep 2026. The average across the fares we caught is €268. December 2026 is the cheapest month in our observations, at €187. These are prices our searches returned on the dates shown, not quotes; run a live search for today's fare.

About this route

Explore the fares we observed from Montreal to Ontario. Prices move often, so pick your dates to see the latest options.

Route distance: 3,921 km
Typical journey time: 17h 40m
Airlines seen: Air Canada, Air Transat, Frontier Airlines, Porter Airlines Canada, United Airlines
Seen on fares with a connection: Porter Airlines Canada, United Airlines, Frontier Airlines, Air Canada
Alternative airports: YHU, YMX

Route-level information; individual journeys vary.
We have not observed non-stop service on this route; the fares shown include at least one stop.

A clearer picture of your fare

Observed, not guaranteed

Every price is a fare we actually saw, and it may change at any time.

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How our prices work

Airport to city: straight-line distance

Montréal / Saint-Hubert Metropolitan Airport (YHU) → Montreal, city gazetteer reference point (45.5089, -73.5542): ≈ 11 km.
Montreal / Pierre Elliott Trudeau International Airport (YUL) → Montreal, city gazetteer reference point (45.5089, -73.5542): ≈ 15 km.
Montreal Mirabel International Airport (YMX) → Montreal, city gazetteer reference point (45.5089, -73.5542): ≈ 42 km.
Ontario International Airport (ONT) → Ontario, city gazetteer reference point (34.0500, -117.6400): ≈ 4 km.

Approximate distances calculated from coordinates, not road distances or travel times. These airports serve the city; they are not confirmed endpoints of an offer.

Lowest one-way fare we saw per airline

Cheapest airline from Montreal to Ontario: Porter Airlines Canada, from €187 (checked 30 Sep 2026).

Lowest one-way fare we saw per airline
Airline	Lowest fare	Priced days
Porter Airlines Canada	€187Dec 5, 2026	48
Frontier Airlines	€202Dec 6, 2026	5
United Airlines	€245Oct 20, 2026	22

One-way fares checked in the last 14 days. An airline listed here had a fare on at least 3 departure days. Each figure is the lowest we saw, not a guaranteed fare. Connecting itineraries are included; the date is the departure day of that fare.

Frequently asked

How much is a flight from Montreal to Ontario?

The lowest fare we have observed is €187, found on 30 Sep 2026. Prices move, so read it as a floor rather than a quote.

When is the cheapest month to fly from Montreal to Ontario?

In our observations December 2026 is the cheapest month so far, at €187.

Are there direct flights from Montreal to Ontario?

Our data holds no non-stop flight from Montreal to Ontario. The fares on this page include at least one stop.

Which airlines fly from Montreal to Ontario?

These are the carriers we have seen on the route: Air Canada, Air Transat, Frontier Airlines, Porter Airlines Canada, United Airlines.

How long does the flight from Montreal to Ontario take?

The average journey time across the 85 fares we observed is 18h 11m, including any stops. Individual departures vary; the fastest observed flight is listed in the route facts above.

How many of the observed Montreal to Ontario fares were non-stop?

None of the 85 fares we observed was non-stop; every one included at least one stop. That describes our observations, not every flight that operates.

Which airline has the lowest fare from Montreal to Ontario?

Cheapest airline from Montreal to Ontario: Porter Airlines Canada, from €187 (checked 30 Sep 2026).

How observed prices work, what "No data" means and what a fare includes: Read the flight price guide