OREO Shamrock McFlurry 2026: Return Date, Calories, and Everything Else You Need to Know
The OREO Shamrock McFlurry is back at McDonald’s for a limited time, arriving alongside the classic Shamrock Shake on February 17, 2026, and staying on the menu at participating U.S. locations through mid-March while supplies last. It combines McDonald’s vanilla soft serve, mint-flavored Shamrock syrup, and crushed OREO cookie pieces into one seasonal dessert built for St. Patrick’s Day.
If you have been wondering exactly when this treat shows up, how many calories it packs, or how it stacks up against the original Shamrock Shake, this guide covers all of it. You will find nutrition numbers, pricing, size options, ordering tips, and a rundown of other McFlurry flavors that have quietly left the menu over the years.
What Is the OREO Shamrock McFlurry
The OREO Shamrock McFlurry starts with the same soft serve base used in every McFlurry, then gets blended with the mint-hued Shamrock syrup that gives the classic shake its color and flavor. Crushed OREO cookie pieces are folded in last, adding a crunchy, slightly bitter contrast to the sweet mint base.
Unlike the Shamrock Shake, which is a drink, the McFlurry version is served with a spoon in a cup. The cookie pieces settle differently depending on how the machine blends them, so some cups end up with more OREO near the bottom while others distribute it evenly throughout.
McDonald’s first introduced this pairing in 2020 as a spinoff of the original shake, and it earned enough of a following to return nearly every year since. It typically launches on the same day as the Shamrock Shake and disappears from the menu around the same time too.
When Does the OREO Shamrock McFlurry Return in 2026
McDonald’s confirmed that both the Shamrock Shake and the OREO Shamrock McFlurry returned to participating restaurants nationwide starting Tuesday, February 17, 2026. That date lands about a month before St. Patrick’s Day, which falls on March 17.
The exact launch date shifts every year based on internal planning rather than a fixed calendar slot. Recent return dates include February 10 in 2025, February 5 in 2024, and February 20 in 2023, so mid-February has become the general window to watch for.
Because availability depends on individual franchise decisions, some locations may add the McFlurry to their kiosks and app a day or two later than others. Checking the McDonald’s app under “Limited Time” is the fastest way to confirm it has landed near you.
How Long Will It Be Available
McDonald’s has not published a fixed end date for the OREO Shamrock McFlurry in 2026. Based on past seasons, it usually stays on the menu into mid-to-late March, often close to St. Patrick’s Day itself, before being pulled once the seasonal syrup runs low.
Because the syrup is produced in limited batches, some restaurants sell out earlier than others. A location in a high-traffic area might stop offering it by early March, while a quieter store could still have it into the first week of April.
Quick Answer
Expect the OREO Shamrock McFlurry to run from mid-February through mid-March 2026, roughly a four-to-five week window, though exact dates vary by restaurant and depend on ingredient supply.
OREO Shamrock McFlurry Sizes and Prices
McDonald’s sells the McFlurry in two sizes at most U.S. locations: a Mini and a Regular. The Mini size was added to the permanent lineup in 2024 and has become a popular lower-cost, lower-calorie option for people who want a smaller portion.
Pricing varies by region and franchise, so the numbers below are general U.S. estimates rather than a fixed national price.
| Size | Estimated Price | Estimated Calories |
|---|---|---|
| Mini | $2.19–$2.79 | 340–410 |
| Regular | $3.59–$4.39 | 550–590 |
Local promotions through the McDonald’s app, including deals tied to a small purchase, can lower the effective price. Checking the app’s offers tab before ordering is worth the extra minute.
OREO Shamrock McFlurry Nutrition and Calories
A Regular OREO Shamrock McFlurry generally lands around 560 calories, though McDonald’s own published figures have shifted slightly from year to year as recipes get small tweaks. Along with calories, it carries a meaningful amount of sugar and saturated fat, so it sits closer to a dessert than a snack.
| Nutrient | Mini (approx.) | Regular (approx.) |
|---|---|---|
| Calories | 340–410 | 550–590 |
| Total Fat | 10–12g | 16–17g |
| Saturated Fat | 6–7g | 9–10g |
| Sodium | 150–180mg | 250–260mg |
| Total Carbs | 55–65g | 90–93g |
| Sugars | 45–55g | 70–72g |
| Protein | 8–9g | 11–12g |
These figures can shift by a small margin depending on how the restaurant portions the OREO pieces and syrup, so treat them as a close estimate rather than an exact lab measurement. For a precise number on any given day, the McDonald’s app lists nutrition per item at checkout.
OREO Shamrock McFlurry vs. Classic Shamrock Shake
Both treats share the same mint syrup and soft serve base, but they differ enough in calories, texture, and format that picking between them often comes down to whether you want a drink or a spoonable dessert.
| Feature | Shamrock Shake (Small) | OREO Shamrock McFlurry (Regular) |
|---|---|---|
| Format | Drink, served with a straw | Dessert, served with a spoon |
| Calories | 460–500 | 550–590 |
| Add-ins | None | Crushed OREO cookie pieces |
| Topping | Whipped cream | Whipped cream (optional at some stores) |
| Flavor Profile | Pure mint | Mint with chocolate and cream notes |
If mint is the only flavor you want, the shake keeps things simple. If you like a bit of texture and chocolate mixed into that same mint base, the McFlurry version delivers more variety per cup.
A Short History of the Shamrock Shake and Its McFlurry Spinoff
The Shamrock Shake dates back to 1967, when Connecticut franchisee Hal Rosen created it, and McDonald’s rolled it out nationally in 1970. The earliest version actually used a lemon-lime sherbet base rather than mint, and the mint-and-vanilla recipe fans know today did not become standard until 1983.
The shake has not appeared in every U.S. market every year. Texas, for example, went without it for a stretch after 2017, since McDonald’s decides regional availability based on how well certain items perform in different parts of the country.
The OREO Shamrock McFlurry is a much newer addition, debuting in 2020 as a way to give the seasonal mint flavor a second format. It caught on quickly enough that McDonald’s has brought it back nearly every spring since, usually launching and ending on the same schedule as the shake itself.
Where to Get the OREO Shamrock McFlurry
The OREO Shamrock McFlurry is sold at participating McDonald’s locations across the United States. It is not a global item; outside the U.S., only Canada and Ireland have historically carried Shamrock-branded menu items, and even then, availability and naming can differ.
You can order it three ways:
- In-restaurant at the counter or a self-order kiosk
- Through the McDonald’s app for pickup or delivery
- Via third-party delivery apps where McDonald’s participates
Because it is a limited-time item, it will not always show up in every search or menu screen right away. If the app does not display it, try searching “McFlurry” directly within the seasonal or limited-time menu tab.
Tips for Getting the Best Deal
A few small habits can shave a dollar or more off your order without much effort.
- Check the McDonald’s app for the current limited-time offer tied to a small purchase, which sometimes includes a free side alongside your McFlurry.
- Order earlier in the season rather than waiting until late March, since some stores run out of Shamrock syrup before St. Patrick’s Day arrives.
- Compare the Mini size against the Regular size on a cost-per-ounce basis, since the Mini is often the better value if you are not trying to split it with someone else.
- Ask whether whipped cream is included, since some locations charge separately or skip it by default on the McFlurry version.
Other McFlurry Flavors That Have Been Discontinued
The Shamrock lineup is not the only seasonal or limited McFlurry McDonald’s has phased out over the years. Several once-popular flavors quietly disappeared from U.S. and international menus.
| Flavor | Status | Region |
|---|---|---|
| Reese’s Peanut Butter Cup McFlurry | Discontinued | United States |
| Nestlé Crunch McFlurry | Discontinued | United States |
| Butterfinger McFlurry | Discontinued | United States |
| Biscoff McFlurry | Discontinued | United Kingdom |
| Galaxy Chocolate McFlurry | Discontinued | United Kingdom |
| Caramel Loaded McFlurry | Pulled for quality issues | United Kingdom |
| S’mores McFlurry | Limited seasonal only | Canada |
Fans of several of these flavors, particularly Reese’s and Biscoff, have kept petitions and social media campaigns going for years asking McDonald’s to bring them back permanently.
Frequently Asked Questions
How long will the Shamrock Shake be available?
The Shamrock Shake typically runs from mid-February through mid-to-late March, though the exact end date depends on supply and varies by location.
Does McDonald’s have the OREO Shamrock McFlurry?
Yes, McDonald’s brought the OREO Shamrock McFlurry back for the 2026 season starting February 17, alongside the classic Shamrock Shake.
Which McFlurry flavors have been discontinued?
Reese’s Peanut Butter Cup, Nestlé Crunch, Butterfinger, and the UK’s Biscoff and Galaxy Chocolate McFlurries have all been removed from menus at various points.
How long will McDonald’s have the Shamrock Shake in 2026?
It launched February 17, 2026, and based on prior years is expected to remain available into March until participating restaurants sell through their syrup supply.
Final Thoughts
The OREO Shamrock McFlurry gives longtime Shamrock Shake fans a second way to enjoy the same mint flavor, this time with a spoon and a bit of cookie crunch. With the 2026 season underway from February 17, the best move is to order sooner rather than later, since the syrup that makes this treat green and minty does not last on shelves forever. Check the McDonald’s app for the exact availability and pricing at your nearest location before it disappears again until next spring.
