Most people judge a travel eSIM by the headline price of the package. A more useful figure is what each gigabyte costs once a discount is applied, because that is the number you can hold against a roaming pass or a local prepaid SIM. The promotion code EDCC10 gives 10% off, and this piece looks at how that 10% behaves when you turn it into a cost-per-gigabyte figure.
The discount applies to the plan price shown in the Airalo store. It does not change the data allowance and it does not extend the validity window. That matters for the arithmetic: the numerator of your per-gigabyte sum drops by a tenth, while the denominator stays exactly where the plan detail page says it is.
So the calculation is simple. Take the price after the discount line appears, divide it by the gigabytes listed on the plan page, and you have your figure. Do the same for the alternatives you are considering.
Airalo plans are typically priced in single or low double-digit dollars, with example price points cited at about $5 for a small plan and around $20 for a mid-sized regional plan.
At about $5, 10% off takes the total to roughly $4.50, a saving of around 50 cents.
At around $20, 10% off takes the total to roughly $18, a saving of around $2.
If the plan in front of you shows, say, 5 GB at around $20, the discounted $18 works out at about $3.60 per gigabyte rather than $4. The percentage saved is identical at both price points; the absolute saving, and therefore the shift in your per-gigabyte figure, is larger on the more expensive order.
A per-gigabyte cost is only honest if you actually use the gigabytes. Each package has a fixed data allowance and a validity window in days, and unused data does not roll over once that window closes. Validity generally starts when the eSIM first connects to a network at the destination rather than at purchase, though sources differ on whether some plans start at installation, so check the plan page.
If you buy a large plan, use half of it, and let the rest expire, your effective cost per gigabyte used is far higher than the shop-front maths suggested — and the 10% will not rescue it. Buying a size you will realistically consume, then adding a top-up from My eSIMs if you run short, keeps the real figure close to the calculated one.
The alternatives are a home-carrier roaming pass or a local physical prepaid SIM. When you line them up, apply the discount first so you are comparing the price you will really pay. Two further points sit outside the sum: bank foreign transaction fees and exchange rates are not reduced by the code, and most Airalo packages are data-only with no local number or traditional SMS, so a plan that includes a number is worth checking for on the plan detail page if calls matter to you.
Sign in to, or create, an Airalo account at airalo.com or in the app.
Search the destination, open the plan, and confirm the allowance and validity you are dividing by.
Tap Buy Now to reach the order summary or payment screen.
Expand the promo code row — a tag or ticket icon in the app, a text box in the web order summary — and enter EDCC10 exactly, with no spaces.
Apply it and check the discount line appears and the total falls by 10%.
Pay by card or wallet, then install from My eSIMs over home Wi-Fi and enable Data Roaming for that line only on arrival.
The code must be applied before payment; it cannot be added to a completed order, and there is no reliable route to a 10% credit after paying full price. Assume one code per order and no stacking with other offers or active sales. Codes on the platform are typically single-use per account, and Airalo has not published whether EDCC10 is reusable, whether it applies to repeat purchases, whether top-ups or store credit and gift cards qualify, or whether any minimum order value or package exclusions apply. The payment screen is where those answers show up: if the total moves by a tenth, your maths holds.
Web page: Promotion Code Airalo EDCC10: Changing Your Plan Mid-Checkout
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NotebookLM report: Promotion Code Airalo EDCC10: What the 10% Discount Does Not Change
Promo Code Guides: Promotion Code Airalo EDCC10: Long Stays, Validity Windows, Top-Ups
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