The 5-Minute Pre-Trip Habit That Saves Me $400+ a Year on Travel Data
Posted to Indie Hackers · April 2026
I run a small consultancy. I travel internationally about six times a year. Until about eighteen months ago, I had never once questioned what I was paying for mobile data abroad.
Roaming add-on from my carrier. Done. Next problem.
A client mentioned in passing that he'd stopped paying roaming charges entirely and was sorting travel eSIM plans before every trip through a comparison site. He said the whole process took five minutes and he hadn't paid a roaming bill since.
I assumed he meant something complicated. It wasn't.
What actually happens when you don't compare
The international eSIM market has five or six serious providers right now — Airalo, Saily, eSIMo, aloSIM, Airhub. They all cover most of the same countries. They all offer similar products. And the price difference between them for the exact same destination and data amount can be anywhere from 50% to 300%.
Most travellers never see this because comparing them properly means opening five separate apps, doing mental maths on different plan sizes, and repeating the whole exercise for each new destination. So instead, people just buy from whoever they used last time and quietly overpay, every single trip.
The site my client mentioned — esim.coupons — puts every provider's plans on one page for any country you search. But the feature that actually changed how I buy is the price-per-gigabyte column.
That single number tells you what you're actually paying, not what the headline price looks like. A $12.90 plan for 5GB is $2.58/GB. An $18 plan for 10GB is $1.80/GB. Without that calculation done for you, the cheaper-looking option wins by default even when it's worse value.
My numbers from the last six months
Germany, Japan, Thailand, Canada, Australia. Six trips. Here's roughly what changed:
Before: averaging around $95–$110 per trip on data between roaming add-ons and airport SIM cards.
After: averaging $16–$22 per trip using plans found through the comparison, with a verified eSIM coupon code applied at checkout most times.
That's somewhere between $400 and $500 saved across six trips. Not startup-changing money. But not nothing either — especially when the comparison takes five minutes and the eSIM installs in two.
The coupon codes deserve a mention because I almost ignored them. The site has a dedicated eSIM coupons page with active discount codes for every provider, clearly marked with expiry dates. AIRALOESIM10 gives 10% off Airalo. ESIMCP works across eSIMo, aloSIM, and Saily. I've applied one before almost every purchase. They work.
The actual workflow
Search your destination on esim.coupons. Filter to your trip length. Sort by price per GB. Check speeds if you're doing video calls. Open the coupons page. Copy the relevant code. Buy. Scan the QR code that arrives in your email. Install before you board.
That's it. You land already connected. No arrivals hall SIM card hunt. No roaming charges sitting in your next billing cycle.
I do this the evening before every flight now, same routine as checking in online. It takes less time than this post took to write.
Why I'm sharing this here
The IH community skews heavily towards people who travel for work, run remote teams, or move between countries regularly. I suspect a lot of us are in the habit I used to be in — treating data roaming as an unavoidable cost rather than a market worth five minutes of comparison.
The tools exist to do this better now. The price transparency exists. The international data plans are genuinely cheap when you find the right one. The only thing missing was knowing where to look.
If you're still running a roaming add-on out of habit, give the comparison a try before your next trip. Worst case you spend five minutes and confirm you were already on a good deal. More likely you find something cheaper and arrive connected regardless.
Curious whether others here have worked out a system for this — or if there are providers worth knowing about beyond the main five.
Link: esim.coupons Coupon codes: esim.coupons/coupons
