Air Canada's brand-new Airbus A321XLRs were supposed to link Toronto Pearson with London Heathrow from late August this year. Instead, the route was quietly handed back to widebodies before the narrowbody jet ever touched the pairing — and the reason says a lot about how slot economics shape who flies what across the Atlantic.
The A321XLR is the longest-range single-aisle jet on the market, built for 'long and thin' routes that don't justify a widebody. Air Canada has 30 on order (15 leased), with six now in the fleet since the first arrived in February and entered service in June. The cabin holds 182 passengers: 14 lie-flat Signature Class seats and 168 in economy, with Airbus touting a 30% fuel burn saving per seat over the aircraft it replaces.
Schedule data had shown the type on Toronto–Heathrow from August 31 to October 23, positioned as a supplementary fifth daily flight. But in May's schedule update, Air Canada swapped it out for widebodies — a Boeing 777-200LR in September, then 787-8s and 787-9s in October. Those jets seat 300, 255 and 298 passengers respectively and carry far more cargo. At Heathrow, one of the world's most slot-constrained airports, where landing and departure rights cost a premium, filling every slot with maximum seats and freight simply makes more money. Sending a 182-seater there effectively caps revenue.
Slot timing was the other stumbling block. The real plan was to revive the Toronto–Heathrow 'day tripper' — a morning departure arriving in London the same evening, a service Air Canada dropped roughly six years ago. Chief commercial officer Mark Galardo had said the A321XLR 'will help us restore that day tripper.' But the airline gave up its appropriate daytime slots in 2020 and has yet to secure them again. Not all is lost: Air Canada still intends to launch the day tripper with the A321XLR from May 2027.
There's a pilot-training wrinkle too. Toronto has a large Airbus pilot contingent that couldn't all be trained in time, so the airline deliberately started A321XLR flying from Montréal instead — 'purely operational,' as Galardo put it. The type's first transatlantic route was Montréal–Toulouse in June, having originally been earmarked to debut to Palma de Mallorca. Air Canada has also adjusted planned A321XLR service to Dublin, Edinburgh, and Toulouse amid delivery delays, demand shifts and crew availability. Toronto's first regular transatlantic A321XLR routes — Tenerife South and Manchester — begin in late October.
For travellers, the takeaway is this: if you were hoping to try the new narrowbody on Canada's busiest London route, you'll be on a widebody for now — which most people will consider a win. The A321XLR will show up on secondary transatlantic routes from Toronto, Montréal and Halifax, often with the same lie-flat Signature Class in a smaller cabin. And from May 2027, watch for that revived daytime Toronto–Heathrow flight, if the slots come through.
