Montreal (YUL) to Barcelona (BCN): 3,673 miles (5,912 km) great-circle, about 7h 50m nonstop by our estimate. Cheapest fare observed: $636 round-trip on Air Canada, with 1 stop, departing April 27, 2026.
$636 round-trip, Air Canada AC8107, departing 2026-04-27 at 08:30, returning 2026-05-04. The recorded itinerary left on a Monday, returning on a Monday 7 nights later; the fare was observed 2 days before departure. "Book this flight" opens Kiwi.com with the same airline and dates.
At $636, it ranked 13th of the 30 round-trip fares we recorded from YUL (median $752). That is 17.3 cents per great-circle mile (round-trip price over one-way distance), below the YUL median of 21.8 cents across 30 round-trip routes.
Routes from YUL of similar length: Marseille (3,731 mi) at $852 and Malaga (3,545 mi) at $868.
Air Canada had the cheapest fare on 4 of 30 YUL routes. It is the 16th longest of the 30 routes we track from YUL.
Of 57 departure airports with a fare to Barcelona, Montreal (YUL) ranked 40th at $636. Lowest: $44 from Milan (MXP); highest: $1401 from Brisbane (BNE); 28 nonstop. Cheapest-fare airlines (routes): Vueling (11), Wizz Air (10), Ryanair (8), Air Canada (4), Air Europa (3) and Wizz Air Malta (3), plus 18 more.
That depends on your passport and trip, so check the official source for Spain: European Commission: Schengen visa policy. Connecting elsewhere? Check that country's transit rules too.
Travelpayouts fares (cheapest per route, observed April 25, 2026); OurAirports coordinates and elevations; IANA zones America/Toronto, Europe/Madrid; flight time is our estimate.