Prices updated daily — 1 June 2026
Product type overview
flat iron steak sits within Beef, part of Meat, Poultry & Fish. On this page you compare 6 products from 6 UK supermarkets: Tesco, Sainsbury's, ASDA, Aldi, Morrisons and Waitrose. The lowest unit price for flat iron steak is £14.29/kg at ASDA. In total, 1 variants of flat iron steak are compared (different pack sizes and compositions). All prices are normalised to the same unit (per kilogram, per litre or per piece) so that packs of different sizes can be compared fairly — a larger pack is not automatically the best value. The ranking below shows, per variant, which supermarket currently has the sharpest price, including own-label products alongside national brands. Prices refresh daily from the retailers' own public price lists, so you never see stale offers when planning your weekly shop. Allsupers uses no affiliate links or paid placement; the ranking is purely price-based and updated from public data.
Cheapest flat iron steak
Compare 6 products across 6 supermarkets
flat iron steak — compare prices across 6 supermarkets

ASDA
ASDA Tender 2 Flat Iron Steaks with a Miso & Honey Glaze
490 g
£14.29/kg
at 1 supermarket

Summer Grill by ASDA
Summer Grill by ASDA 2 Flat Iron Steaks 370g
370 g
£17.35/kg
at 1 supermarket

Market Street
Morrisons British Flat Iron Steak 283g
283 g
£19.43/kg
at 1 supermarket

Market Street
Morrisons Scotch Flat Iron Steak 283g
283 g
£19.43/kg
at 1 supermarket

Waitrose Ltd
No.1 BBQ Soy & Black Pepper Flat Iron Steak
475 g
£29.47/kg
at 1 supermarket

SPECIALLY SELECTED
Flat Iron Premium Wagyu Steak
227 g
£30.79/kg
at 1 supermarket