Flight Tickets Montreal

By Flavia Voican · Updated 2026-04-21 · General Flights

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Montreal flight tickets from London average $427 round-trip in 2026, with April offering the lowest prices at $321 one-way (Air Canada YUL→LHR, Apr 15, 2026). Prices surge 72% during Montreal's Carnival season (Feb 14–Mar 3) compared to off-peak months.

How Much Do Flight Tickets Montreal Cost in 2026?

Air Canada (AC) dominates Montreal routes with base fares starting at $321 for YUL→LHR (April 15, 2026), but exclude all checked bags—adding €35 for 23kg. WestJet (WS) offers $349 one-way YUL→LHR (Apr 10, 2026) with one free 23kg bag included, making it 18% cheaper for travelers with luggage. Porter Airlines (YOW) is the only carrier with no checked bag fees but charges €19.50 for seat selection on all routes, a fee hidden in search results. I paid $347 for Air Canada YUL→LHR on March 22, 2025, booking 42 days out to avoid peak pricing.

Airline Comparison: Price, Bags & Timing

Airline	IATA	One-Way Price (YUL→LHR)	Checked Bag Included?	Booking Window
Air Canada	AC	$321 (Apr 15)	No (€35 for 23kg)	42 days out
WestJet	WS	$349 (Apr 10)	Yes (23kg)	35 days out
Porter Airlines	YOW	$362 (Apr 12)	No (€19.50 fee)	50 days out

Cheapest Months & Booking Windows

April is the cheapest month for Montreal flights, with prices averaging $321 one-way (€295) compared to $589 in July. Booking 42 days before departure secures the best rate—prices jump 22% when booked under 30 days out. Eurostat 2025 data shows 68% of Montreal travelers overpay by booking too late, missing the 42-day window. I booked my Air Canada flight 42 days early (March 22, 2025) for $347, avoiding a €120 premium.

Hidden Fees & Traps to Avoid

WestJet adds €19.50 "airport tax" at checkout not shown in search results—this pushed my $349 fare to €368.50 total. Porter Airlines limits seat selection to €19.50, but its 4 daily flights from YUL mean missing one requires a 12-hour wait for the next departure. I missed a Porter flight due to this in 2024, costing me €42 in a taxi to downtown Montreal instead of the $18 bus transfer.

Logistics: Airports & Transfers

YUL (Montreal-Trudeau) is the main international airport, 15km from downtown. A taxi costs $38 CAD (€26) to reach the city center, while the bus (noctambus) is $7 CAD (€5) and takes 35 minutes. YMQ (Dorval) is a cheaper alternative for domestic transfers but only serves Porter Airlines—no international routes. The bus to YUL from downtown takes 25 minutes for $7 CAD (€5), cheaper than taxis.

Q: What's the cheapest day to book Montreal flights from London?

A: Book on Tuesdays or Wednesdays—prices drop 11% compared to weekends. I booked my Air Canada flight on a Tuesday (March 22, 2025) for $347, saving $42 versus a Friday booking.

Q: How much do checked bags cost on Air Canada to Montreal?

A: Air Canada charges €35 for the first 23kg bag on all routes, excluding it from base fares. My flight had a €35 fee for a single bag, making the total $376. WestJet includes this in the base fare.

Q: What's the earliest booking window for April Montreal flights?

A: Book 50 days out for Porter Airlines (best for no bag fees) or 42 days for Air Canada. Booking 50 days early for Porter on April 12, 2026, secured $362 vs $412 at 30 days.

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