Women's shoes in large sizes in Canada
Online fashion giant ASOS has a huge range of shoes in size 9 UK (11-11.5 US). Plus over 100 of their own brand styles go up to size 10 UK (12 US, 43 EU) with a smaller range now available in size 11 UK/13 US too - all at very affordable prices. While I find their size 9 UK true to size, reviews here suggest the 10s & 11s run small, so you may need to size up. Free shipping worldwide with minimum spend & free returns for most regions too. Student discount available for many countries.
US chain Maurices have nearly 900 stores across US & Canada & also ship online to both. They have a nice range of cute shoes at affordable prices up to size 12 US. They mainly do casual shoes, boots and summer sandals. Free US shipping & flat rate to Canada. Store returns are free.
US brand Sorel's women's footwear goes up to size 12 US (10 UK or 43 US). They are renowned for their durable winter boots but offer much more than just outdoor styles. They have a wide variety of boots as well as trainers & even fashion sandals available. They also have a range of premium slippers, many fleece lined.
Design your own custom luxury shoes up to size 45 EU / 13 US. Worldwide shipping. Choose from 80+ flat and heeled styles and 100 materials. A few styles are also available in wide fit. You can even get a personal message engraved on the sole.
Sustainable casual & running shoes made with natural materials. Several Allbird styles are unisex & available via the men’s collection up to size 15 US, 13 UK or 47 EU. Allbirds also offer free returns and a 30 day trial, so you can still get a refund even after wearing the shoes which is rare.
VIONIC shoes use special arch support orthotics technology helping support natural alignment. A wide variety of styles go up up to size 9 UK/11 US, with a few slippers & sandals available in size 10 UK/12 US. One special feature is the 30 day money back guarantee where you can send the shoes back if they don't suit you even after wearing them outside.
Fitflop shoes are engineered to promote optimal body alignment and complement your natural walking style. Originally famous for their summer sandals, the range has now expanded greatly even covering workwear & boots. Over 200 styles are available in size 9 UK / 43 EU / 11 US. Most are normal to wide fitting, but their Dynamicrush footbed styles are narrow fit. I have their Rally laced sneakers & find them a very generous size 9, so could suit wider feet and possibly fit size 9.5 UK feet too. Note that returns are only free in Canada & for non sale items in the UK, but you could get return postage refunded via PayPal.
German brands Josef Seibel & Romika offer comfortable walking shoes as well as dressier heeled boots and sandals up to size 44 European or 12 US. Their official North America site has a small selection of these available in size 11 & 12 US and sells direct to USA & Canada with free shipping. You can also find local stockists who might offer a wider range in large sizes.