Flat White
£3.05–£4.75*
151 kcal
7.7g protein
Updated 12 September 2026 · price from a third party listing
Flat White sits 16th of 98 on price in Costa Coffee’s Our menu section, at £3.05–£4.75 and 151 kcal. Updated 12 September 2026.
A short but intense espresso, expertly combined with sweet textured milk for a rich and velvety coffee.
The £3.05–£4.75 figure came from a third party listing rather than from Costa Coffee, which means it may reflect a delivery menu. Delivery prices sit above in restaurant prices before any fee is added, so treat this as the ceiling rather than the till price.
Allergens Costa Coffee declares
Source: Costa Coffee product allergen information (costa.co.uk, September 2026). Shared kitchens mean cross-contamination is possible. Ask in the restaurant if an allergy is severe.
Nutrition Information
Per portion, as served
As published by Costa Coffee · 626 kJ
| Nutrient | Amount | % RI (calculated) |
|---|---|---|
| Energy | 151 kcal | 8% |
| Fat | 8.3g | 12% |
| of which saturates | 5.3g | 27% |
| Carbohydrate | 11g | 4% |
| of which sugars | 9.5g | 11% |
| Protein | 7.7g | 15% |
| Salt | 0.24g | 4% |
% RI is our calculation against the UK reference intake for an average adult: 2,000 kcal, 70g fat, 20g saturates, 260g carbohydrate, 90g sugars, 50g protein and 6g salt. Costa Coffee publishes the amounts, not these percentages.
Everything You Need to Know About Costa Coffee Flat White
How to order Flat White at Costa Coffee
Counter, kiosk and app all carry it. The Costa Coffee app adds collection and delivery. It is filed under Our menu. Availability is set per branch, so a smaller site may not carry it at all.
Costa Coffee Flat White price in 2026
The Costa Coffee Flat White price in 2026 is £3.05–£4.75 on the figures we hold, with branch to branch variation between £3.05 and £4.75. The figure came from a third party listing rather than from Costa Coffee, so read it as a ceiling. Within the Our menu section that puts it 16th of 98 on price. Expect more at airport, motorway and station branches than on a high street, and more again through a delivery app.
Finding it near you
We list 2,561 Costa Coffee branches across 3 of the four UK nations, with the Birmingham postcode area holding the most at 72. Menus vary by site, so a listing here is national rather than a promise about your nearest one. The Costa Coffee app confirms it in seconds.
Allergens declared
Costa Coffee declares 1 of the 14 allergens UK law requires to be listed for this item: milk. A declaration covers the recipe and not the kitchen, and every one of these chains prepares food in shared fryers and on shared surfaces. For a severe allergy the only reliable check is asking staff on the day.
A lighter choice in the same section
Apple Slices sits in the same part of the menu at 47 kcal, which is 104 fewer than this. That swap is the single biggest change available inside this section, and it needs no substitution or special request at the counter.
What 151 kcal means here
151 kcal is well below the Our menu average. On its own it is a small addition to a day rather than a meal. The 2,000 kcal figure printed on UK menus is a reference intake for an average adult, not a target, and it is the number these percentages are worked against.
Pro Tips for Ordering Flat White
Ordering it the way you want
Size and milk are the two levers on a drink like this, and both move the calorie figure more than any syrup does. A smaller cup with semi skimmed milk lands well below the same drink made large with whole milk. Costa Coffee publishes figures for the standard build, so any change you ask for moves you off the number in the table above.
Where it sits on price
15 items cost less than this one in the Our menu section and 82 cost more, out of 98 we hold a price for. The closest thing to it on price is Croissant (V) at £3.10, so those two are the real comparison when you are deciding.
Protein for the calories
It gives 5.1g of protein per 100 kcal, against a menu average of 3.4g across everything we hold for Costa Coffee. That is a strong ratio for this menu, which matters more than the raw protein figure when you are comparing two items of different sizes. On raw protein it ranks 56th of 132 in its section.
Frequently Asked Questions About Costa Coffee Flat White
How much is Flat White at Costa Coffee?
How many calories are in Flat White?
What is a lighter alternative to Flat White?
Is Flat White a good source of protein?
What allergens does Costa Coffee declare in Flat White?
Is Flat White available at every Costa Coffee in the UK?
More Costa Coffee Menu Items
Maple Hazel Latte
Your favourite latte with roasted hazelnut flavour syrup & luxurious maple sauce, topped with light whip, and sprinkled with an autumnal crunchy biscuit topping. ATTENTION: This drink cannot be made dairy free, even when made with a dairy alternative, due to other ingredients containing milk
Caramel Macchiato
Freshly steamed milk with sugar free vanilla flavour syrup, marked with espresso and finished with salted caramel flavoured sauce ATTENTION: This drink cannot be made dairy free, even when made with a dairy alternative, due to other ingredients containing milk
Spanish Latte
A latte with Condensed Milk Flavoured Sauce. ATTENTION: This drink cannot be made dairy free, even when made with a dairy alternative, due to other ingredients containing milk
Signature Latte
Our Signature Blend espresso with smooth, textured milk - made with love. Smooth, velvety and crafted to perfection.
Latte
Our signature blend espresso with steamed milk for a smooth and creamy coffee.
Cappuccino
Perfectly extracted espresso capped with luxurious frothy milk, finished with a chocolatey dusting.
Americano
Espresso combined with hot water for a smooth black coffee - enjoyed black or with a splash of milk.
Mocha
Expertly steamed chocolate milk blended with espresso for a caffeinated chocolate treat.
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About Costa Coffee - Coffee & Bakery Restaurant
Costa Coffee trades as a coffee & bakery chain in the UK, and we list 2,561 of its branches. We track 137 of its menu items across 1 sections, recheck them on a rolling schedule, and name the source of every figure. UK Menu Prices has no connection to Costa Coffee and earns nothing from your order.
