Size 12 Extra wide width women's flat shoes in the US
DSW
Designer Shoe Warehouse is a discount shoes & handbags chain with many stores across US & some in Canada too. Shoes available online up to size 13 US. Larger sizes may not be as common in store. Free US shipping, exchanges & store returns. Free VIP rewards program with perks.
Nordstrom Rack, USA
High end discount store which sells online & also has many stores across the US. They've tons of 11 and 12s online, with some 13s and even 14s too. Size selection in store may not be as good as online though. See their current & upcoming daily flash events here where you can grab big deals for a short time. It's worth checking the main Nordstrom site shoe department too which also goes up to size 14. They've a bigger range of large size shoes & often have some great deals too.
Woman Within, USA
Plus size clothing online store & catalogue with lots of medium, wide & extra wide fit footwear up to size 13 us (46 eu, 11.5 uk). A few narrow fit styles available too. Especially good for casual & everyday shoes, but they also have dressy options & even slippers. Frequent deals & Free US returns. Ships to over 40 countries via Global-e. If you're in UK or Europe, you need to shop on One Stop Plus instead & only certain styles are available.
Ally Shoes, USA
Comfortable timeless heels & flats, including wedding shoes, in 4 widths up to size 12 us (45 eu). Widths differ in the toe box only as follows: A for narrow, B for standard, C for roomy toe box or small bunions & D for a very wide toe box or larger bunions. Ally go to great lengths to ensure the right fit. Take the fit quiz, request a fit kit or book a 15 min virtual fit session. In the US, you can even try sample heels at home for free before you order. They also offer a made to order service which still has 14 day returns. Free US shipping & returns for most orders. Ships internationally including Canada, UK, Australia, New Zealand, UAE & the Far East with all taxes included at checkout (other countries may be possible on request).
Kohl's, USA
US department store with tons of size 11 and 12 shoes, plus a few 13s. Good range of styles & brands, especially everyday shoes or sporty sneakers. They're one of the few stores where you can return worn shoes if you're not happy, for up to 180 days too.
Avenue, USA
Plus size clothing retailer with a great range of fashionable wide fit shoes & boots up to size 13 US. Select styles available in extra wide fit too. As well as their own exclusive Cloudwalkers footwear brand which features special comfy insoles, there are also styles from Avenue's sister brands, Evans (UK) and City Chic (Australia). Ships to US only with free shipping with $100 spend.
Shoebacca, USA
US online store with lots of branded women's shoes & boots up to size 12 US, with a smaller range in size 13 US. All widths catered for. Great for sneakers & casual styles. Boots & heels available too from several brands. Free shipping & returns (365 day). Shoebacca also offer a price match guarantee. Note a restocking fee applies to orders under $50. 10% student discount. Find current Shoebacca coupons here. Ships to US only.
Torrid, USA
Plus size clothing brand with a wide range of fashionable extra wide width shoes & boots available up to size 13 US. Retail stores across USA & Canada and website ships worldwide.
Amazon.com
You can get great deals on large size shoes at Amazon with a bit of patience. Their own Amazon Essentials range does fashionable styles at great prices up to size 15 US. The women's shoes department goes right up to 16 US, although many of the largest sizes will either be Chinese brands or unisex. If you have Amazon Prime, many shoes are eligible for free, fast shipping. Plus you can even try before you buy or avail of their personal shopper service.
Lidia Talavera, USA
Inclusive high heels, wedding shoes, boots & dressy flats for women (up to size 13 us, 11 uk) and men (up to size 15.5 us, 14 uk, 48 eu). Medium, wide & extra wide widths available. Women with shoe sizes larger than 13 us can have styles from the men's range customised for their width. The full collection is made to order and customisable: choose from 70 colors & 3 heel heights. Free shipping & returns for US, Canada & Mexico. For worldwide shipping, contact them for an accurate quote first. Custom orders can still be returned for a refund if needed.
Nordstrom, USA
High end US department store with women's shoes up to size 14 US including some good deals. Also check their separate discount chain Nordstrom Rack which has limited stocks of designer large size shoes at more affordable prices.
Walking on a Cloud, Canada
Canadian family owned store shipping to US & Canada with select shoes, walking sandals & boots available up to size 13 us including some narrow, wide & extra wide fit. Mainly comfort and traditional styles. Several stores across Ontario. Note that you cannot return online orders to stores & must pay return shipping costs.