McDonald's — 2915 Highway K

O Fallon, MO 63366

Restaurant Info

📞 (636) 978-3155

📍 Get directions

Drive-Thru Mobile Ordering Delivery

Location data last verified Aug 9, 2026.

Hours

hoursMonday06:00 - 04:00
hoursTuesday05:00 - 04:00
hoursWednesday05:00 - 04:00
hoursThursday05:00 - 04:00
hoursFriday05:00 - 04:00
hoursSaturday05:00 - 04:00
hoursSunday05:00 - 04:00

Menu at This Location

Breakfast

Bacon, Egg & Cheese Biscuit

460 cal

$5.89 typ.

Bacon, Egg & Cheese Bagel

590 cal

$5.59 typ.

Bacon, Egg & Cheese Bagel Meal

$10.49

Bacon, Egg & Cheese Biscuit Meal

$8.69

Bacon, Egg & Cheese McGriddles®

430 cal

$5.72 typ.

Bacon, Egg & Cheese McGriddles® Meal

$9.59

Bagel (plain)

270 cal

$3.59 typ.

Big Breakfast®

1060 cal

$7.59 typ.

Big Breakfast® with Hotcakes

1340 cal

$8.29 typ.

Egg and Cheese Bagel

520 cal

$3.29 typ.

Egg Cheese Biscuit

390 cal

Price unavailable

Egg McMuffin®

310 cal

$7.29 typ.

Egg McMuffin® Meal

$8.59

Fruit & Maple Oatmeal

320 cal

$3.99

Hash Browns

140 cal

$2.49

Honey Brown Butter Bacon, Egg & Cheese Biscuit

490 cal

$5.49

Hotcakes

580 cal

$5.49

Hotcakes and Sausage

770 cal

$6.59

Sausage Biscuit

460 cal

$2.19

Sausage Biscuit with Egg

530 cal

$5.59 typ.

Sausage Biscuit with Egg Meal

$9.29

Sausage Burrito

310 cal

$2.00

Sausage Burrito Meal

$9.19

Sausage McGriddles®

430 cal

$5.72 typ.

Sausage McGriddles® Meal

Price unavailable

Sausage McMuffin®

400 cal

$2.29

Sausage McMuffin® with Egg

480 cal

$6.59 typ.

Sausage McMuffin® with Egg Meal

$6.00

Sausage, Egg & Cheese Bagel

710 cal

$5.99 typ.

Sausage, Egg & Cheese McGriddles®

550 cal

$7.78 typ.

Sausage, Egg & Cheese McGriddles® Meal

$6.00

Steak, Egg & Cheese Bagel

680 cal

$6.79 typ.

Steak, Egg & Cheese Bagel Meal

$11.49

Burgers

Bacon Quarter Pounder®* with Cheese

630 cal

$8.09

Big Mac®

580 cal

$7.29

Cheeseburger

300 cal

$3.39

Daily Double

490 cal

$5.49

Double Cheeseburger

440 cal

$4.49

Double Quarter Pounder®* with Cheese

740 cal

$8.29

Hamburger: The Classic McDonald's Burger

250 cal

$3.29

McDouble®

390 cal

$2.99

Quarter Pounder®* with Cheese

520 cal

$7.59

Quarter Pounder®* with Cheese Deluxe

630 cal

$7.79

Chicken & Fish Sandwiches

Deluxe McCrispy®

530 cal

$6.99

Filet-O-Fish®

380 cal

$6.69

McChicken®

390 cal

$2.00

McCrispy®

470 cal

$5.89

Spicy Deluxe McCrispy®

530 cal

$6.99

Spicy McCrispy®

530 cal

$5.99

McNuggets & Strips

10 Piece Chicken McNuggets®

$7.29

20 Piece Chicken McNuggets®

$12.99

4 Piece Chicken McNuggets®

170 cal

$2.99

40 Piece Chicken McNuggets®

$21.99

McCrispy® Strips

400 cal

$6.39

Snack Wraps

Ranch Snack Wrap®

400 cal

$3.19

Spicy Snack Wrap®

390 cal

$3.19

Fries & Sides

Apple Slices

15 cal

$1.39

Small World Famous Fries®

230 cal

$2.99

Happy Meal

4 piece Chicken McNuggets® Happy Meal®

$6.59

6 Piece McNuggets® Happy Meal®

$7.19

Hamburger Happy Meal®

$5.89

McValue

McCafé® Premium Roast Coffee

10 cal

$2.59

Medium Coca-Cola®

270 cal

$1.99

The Sausage Biscuit Meal Deal

$5.00

The Sausage McMuffin® Meal Deal

$5.00

Desserts & Sweets

Baked Apple Pie

230 cal

$2.69

Chocolate Chip Cookie

170 cal

$1.49

Chocolate Shake

520 cal

$4.39

Hot Caramel Sundae

330 cal

$4.39

Hot Fudge Sundae

330 cal

$4.39

M&M'S® McFlurry®

570 cal

$4.89

OREO® McFlurry®

410 cal

$4.89

Strawberry Shake

470 cal

$4.39

Vanilla Cone

200 cal

$2.59

Vanilla Shake

480 cal

$4.39

McCafé

Blackberry Passion Fruit Refresher

170 cal

$3.99

Dirty Dr Pepper®

220 cal

$3.59

Hot Tea

10 cal

$2.39

Mango Pineapple Refresher

180 cal

$3.99

McCafé® Americano

$3.59

McCafé® Cappuccino

110 cal

$3.19

McCafé® Caramel Cappuccino

210 cal

$3.19

McCafé® Caramel Frappé

420 cal

$4.69

McCafé® Caramel Latte

250 cal

$3.19

McCafé® Caramel Macchiato

260 cal

$3.09

McCafé® French Vanilla Cappuccino

210 cal

$3.19

McCafé® French Vanilla Latte

250 cal

$3.19

McCafé® Hot Chocolate

360 cal

$3.09

McCafé® Iced Caramel Coffee

150 cal

$3.59

McCafé® Iced Caramel Latte

180 cal

$3.19

McCafé® Iced Caramel Macchiato

200 cal

$3.09

McCafé® Iced Coffee

150 cal

$3.59

McCafé® Iced French Vanilla Coffee

150 cal

$3.59

McCafé® Iced Latte

80 cal

$3.19

McCafé® Iced Mocha Latte

270 cal

$3.09

McCafé® Latte

140 cal

$3.19

McCafé® Mocha Frappé

430 cal

$4.69

McCafé® Mocha Latte

290 cal

$3.09

McCafé® Premium Roast Coffee

5 cal

$2.59

McCafé® Premium Roast Decaf Coffee

5 cal

$2.59

Orange Dream

230 cal

$3.59

Sprite® Berry Blast

240 cal

$3.59

Strawberry Watermelon Refresher

160 cal

$3.99

Drinks

1% Low Fat Milk Jug

100 cal

$1.29

Coca-Cola®

200 cal

$2.69

DASANI® Water

$1.59

Diet Coke®

$2.69

Dr Pepper®

190 cal

$2.69

Frozen Coca-Cola® Classic

60 cal

$2.99

Frozen Fanta® Blue Raspberry

60 cal

$2.99

Frozen Hawaiian Punch®

60 cal

$2.99

Hi-C® Orange Lavaburst®

220 cal

$2.69

Honest Kids® Appley Ever After® Organic Juice Drink

35 cal

$1.29

Lemonade

120 cal

$3.29

Mango Pineapple Smoothie

200 cal

$4.29

Minute Maid® Premium Orange Juice

190 cal

$3.19

Reduced Sugar^ Low Fat Chocolate Milk Jug

130 cal

$1.29

Sprite®

190 cal

$2.69

Strawberry Banana Smoothie

190 cal

$4.29

Sweet Tea

170 cal

$1.99

Unsweetened Iced Tea

$1.99

Sauces & Condiments

Caesar Sauce

120 cal

Price unavailable

Creamy Chili McCrispy® Strip Dip

110 cal

Price unavailable

Creamy Ranch Sauce

110 cal

Price unavailable

Honey

50 cal

Price unavailable

Honey Mustard Sauce

60 cal

Price unavailable

Ketchup Packet

10 cal

Price unavailable

Mayonnaise Packet

90 cal

Price unavailable

Mustard Packet

Price unavailable

Spicy Buffalo Sauce

30 cal

Price unavailable

Sweet 'N Sour Sauce

50 cal

Price unavailable

Tangy Barbeque Sauce

45 cal

Price unavailable