WestJet plans to limit the impact of Air Canada's labour dispute on Canadian travellers by adding larger aircraft onto key routes, a spokesperson says.

Canadian airlines are scrambling to respond to a rush of last-minute bookings and calls from customers whose travel plans are suddenly upended as Air Canada AC-T cancels thousands of flights ahead of a possible strike .

Its rivals, including WestJet and Air Transat, said they are working to make schedule adjustments and add inventory to accommodate customers seeking solutions for their travel disruptions.

But many of the airlines The Globe and Mail spoke with said there are limits to what they can do for customers looking for new flights, given that routes are mostly fully booked in these peak summer travel months.

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