How to Upsell Online Restaurant Orders and Boost Your Average Check

When a customer orders in your restaurant, your staff might remember to suggest an appetizer or dessert — but maybe not. It depends on how busy the night is, how experienced the server is, and whether they remembered the training from three months ago.

Online ordering removes all of that inconsistency. The system shows every customer the same prompts, every single time, without getting tired or forgetting.

Here's what that's worth: restaurants that add structured upsell prompts to their online ordering flow typically see average order values increase by 20–35%. If your current average online order is $38, getting it to $46–$51 through smart upselling adds up fast — especially when online orders make up 30–50% of your total volume.

The reason most restaurants miss this opportunity is simple: they set up their online menu to match their paper menu and never think about the ordering flow. They list items. They take payment. Done. But the ordering flow is actually a conversation, and right now most restaurants are staying silent when they should be talking.

Before you add any upsell prompts, your menu needs to be organized in a way that makes upselling logical. If your categories are a jumble of everything, automated prompts won't make sense to customers.

Think about grouping your menu around meal completion. A burger is not a meal — a burger, fries, and a drink is a meal. Build your categories so the natural next step is obvious:

Once your menu is structured this way, you can set up modifiers and add-on prompts that appear while someone is customizing an item, not after they've already decided they're done.

For example: a customer adds a burger to their cart. Immediately they see: "Most people pair this with our seasoned fries (+$3.50) or onion rings (+$4.00)." That single prompt, shown at the right moment, converts at roughly 15–25% in most restaurant setups. On 200 online orders a month, that's 30–50 extra side orders.

Not all upsells are equal. Some feel helpful. Others feel like you're trying to squeeze money out of someone. Here are the three that work best in an online ordering context:

1. Companion items — Things that naturally go with what someone ordered. Garlic bread with pasta. A dipping sauce with wings. These convert well because they complete the experience the customer is already imagining.

2. Size upgrades — "Make it a large for $1.50 more" is one of the oldest upsells in food service for a reason. It works. In an online ordering flow, offer this at the item level, not as a pop-up after checkout.

3. Add-ons and customizations — Extra cheese, double protein, premium toppings. These feel like personalization, not upselling, which is why customers accept them readily. Restaurants charging $1–$3 per modifier can add $5–$8 to an order before the customer even notices.

What doesn't work well online: prompting for desserts before someone has finished building their main order, or showing 10 add-on options at once. Keep each prompt focused on one or two choices.

The wording of your upsell prompts matters more than most restaurant owners realize. "Would you like to add a side?" performs significantly worse than "Most customers who order the BBQ Brisket also grab our mac and cheese."

A few principles that work:

Avoid phrases like "Don't forget to add..." or "You might also want..." — they feel like you're rushing them. And never guilt-trip customers into adding items.

A good rule of thumb: if the upsell prompt would feel weird coming from a friendly server, rewrite it. Aim for the tone of "hey, a lot of people love this together" rather than "buy more stuff."

Showing upsell prompts at the wrong moment is almost worse than not showing them at all. A prompt that interrupts the ordering flow feels like an obstacle. A prompt that appears at a natural pause feels like helpful service.

Here's a simple timeline that works:

Test your timing. Small changes in when prompts appear can shift conversion rates by 5–15%.

Instead of prompting for every individual item, consider building pre-made bundles that deliver more value and push order size up automatically.

A family meal bundle — 2 large pizzas, a salad, and a 2-liter — priced at $49 instead of the $58 it would cost à la carte gives customers a clear reason to choose it. You're moving more product, they feel like they got a deal, and your kitchen can prep it efficiently.

Bundles work especially well for:

Restaurants that add 3–5 bundle options to their online menu see those bundles account for 18–25% of online order revenue within 60–90 days, based on typical adoption patterns.

The key is making bundles visible — put them in their own menu category called "Meal Deals" or "Family Packs" rather than burying them at the bottom of a long menu. If customers have to search for the bundle, most won't bother.

One of the most effective ways to upsell without feeling pushy is tying the upsell to loyalty points. Instead of "Would you like to add dessert?" you show: "Add our chocolate lava cake and earn 50 bonus points toward your next reward."

That reframes the upsell completely. The customer isn't just spending more — they're making progress toward something. This approach lifts add-on acceptance rates by an estimated 20–30% compared to standard prompts, because it replaces friction with motivation.

You can also use loyalty data to personalize upsells. If you can see that a customer orders your chicken sandwich every Tuesday and never adds a drink, you can show them a targeted prompt: "Add your usual lemonade?" That kind of prompt feels like good service, not a sales tactic.

Even without deep personalization, showing loyalty point accrual on upsell items — "You'll earn X points" — consistently outperforms generic prompts. If your ordering system supports it, make this the default for any customer who's logged in to your loyalty program.

You don't need to overhaul your entire online menu at once. Start with three practical steps:

1. Audit your top 5 selling items and identify one companion item or upgrade for each. Write a one-line prompt for each pairing and add it as a modifier or add-on option.

2. Create one bundle that combines a popular main, a side, and a drink at a slight discount. Put it in a visible category on your menu and see how it performs over 30 days.

3. Check your current cart review page and make sure it has at least one light upsell prompt — ideally tied to whatever category is missing from the customer's current order.

If you're setting this up from scratch, Wehanda's menu builder lets you attach add-ons and companion item prompts directly to individual menu items, and its loyalty program integrates with online ordering so you can show point accruals on upsells — which is one of the faster ways to lift your average order value without rewriting your entire menu strategy.

Start small, track your average order value week over week, and iterate. Even a $4 increase per order across 150 weekly online orders is an extra $2,400 a month in revenue you weren't capturing before.