The One Tab I Open Before Every International Flight That Has Never Failed to Find Me a Better Deal
Posted to Indie Hackers · April 2026
I want to share something that has quietly saved me money on every international trip I have taken over the past year and a half — not because it is complicated or clever, but because it is the kind of small, repeatable habit that most people never build simply because nobody tells them it is worth building.
Before every international flight I open one tab.
That tab is esim.coupons. I spend five minutes with the filters. I find the best available travel eSIM plan for my destination. I apply a discount code. I install the eSIM on my phone before I board.
I land already connected. Every time.
That is the short version. Here is the version worth reading.
How I used to handle travel data
For the first three years of running my own thing I handled travel data the way most people do — passively and expensively.
Roaming add-on when I remembered. Airport SIM card when I did not. The occasional frantic search for WiFi in an arrivals hall because neither of those had worked and I needed to tell someone I had landed.
I never thought of it as a solvable problem. I thought of it as a tax — one of those unavoidable overheads that came with international travel. The same way airport food is expensive and you just accept it.
The mental model that changed everything was not a dramatic revelation. It was a single question a founder friend asked me after I mentioned my post-trip roaming bill:
"Did you actually compare your options before buying?"
I had not. Not once. In three years of regular international travel I had never once compared international eSIM providers against each other before making a purchase.
What the comparison actually looks like
The esim.coupons platform does something structurally simple that no individual provider has any incentive to do: it puts every provider's plans on one page, for any country you search, with a price-per-gigabyte column calculated automatically for every listing.
That column is the thing. Everything else — the filters, the speed data, the sort options — is useful. But the per-GB figure is what makes the comparison genuinely actionable rather than just informative.
Without it you are looking at $18 versus $12.90 and the cheaper number wins by default. With it you are looking at $1.80/GB versus $2.58/GB and you immediately understand that the $18 plan is nearly 30% better value for the same data. That kind of clarity does not exist when you go directly to a provider's app. It exists here because the platform built it in.
The site also shows connection speeds per plan. This matters more than I expected. A plan throttled to 900kbps after the high-speed allowance runs out is technically data but practically borderline usable for anything beyond basic messaging. A plan at 2,500–3,000kbps handles navigation, video calls, file uploads, everything. Seeing both numbers on the same row lets you make a decision that matches your actual use case rather than just the cheapest available option.
The destinations I have used this for
The platform covers 150+ countries through its full countries directory with dedicated pages for every major travel destination. The ones I have personally used:
Japan eSIM — where I first realised how badly I had been overpaying. Found an Airalo 10GB plan at $18.00 ($1.80/GB) when I had been about to buy a Saily 5GB plan at $20.39 ($4.08/GB). Twice the data. $2.39 less. Plus the coupon code brought it to $16.20.
Thailand eSIM — strong Airhub options for 15-day trips. Found a 3GB plan at $9.50 for a trip where I had previously paid around $35 for a similar amount of data through a different route.
Germany eSIM — business trip. Needed reliable speed for client calls. The speed column let me filter out plans that would have throttled too aggressively and find something that performed consistently throughout the trip.
Australia eSIM — extended stay. Airhub's high-data options are particularly strong here for anyone spending more than two weeks or needing to tether a laptop.
France eSIM, Spain eSIM, Italy eSIM — all covered well with multiple providers competing on price. The European destinations in particular have seen strong price competition that the comparison makes visible immediately.
USA eSIM, Canada eSIM — North American coverage with broad options across all five providers.
Vietnam eSIM, Malaysia eSIM — Southeast Asian destinations where the variance between providers is wide enough that comparison makes a very meaningful difference per trip.
The providers on the platform
The providers page gives a full breakdown but the practical summary is this:
Airalo is the widest coverage at 213 countries and consistently strong on per-GB value for higher data plans. Best for most destinations most of the time.
Saily runs at higher speeds before throttling — the right choice when connection quality matters more than absolute lowest price.
aloSIM is the strongest budget option. 15% off a first purchase with ESIMCP makes it worth trying if you have not used it before.
eSIMo covers 200 countries and frequently tops the value rankings for European and Asian destinations.
Airhub is the standout for high-data plans — the right choice for extended stays, digital nomads, or anyone who tethers their laptop.
The coupons page — do not skip this step
After finding a plan, the second tab I always open is the eSIM coupons and deals page.
It lists active verified eSIM discount codes for every provider with discount amounts and expiry dates clearly displayed. No expired codes. No guessing. Current working codes include AIRALOESIM10 for 10% off Airalo, ESIMCP for 10% off eSIMo and 15% off a first aloSIM purchase, and MARCHFOREGYPT for $5 off Airhub.
The saving per transaction is small. Across a year of regular travel it compounds into something real. More importantly it takes five extra seconds and requires opening one extra tab. The cost-benefit ratio of this step is essentially infinite.
For anyone who has never used an eSIM
If you are still using physical SIM cards or roaming add-ons and have not made the switch to eSIM yet the How It Works page explains the entire process clearly without any technical language.
The short version: you buy a plan online, receive a QR code by email within minutes, scan it in your phone settings, and the eSIM is installed in about two minutes. You can do this at home the night before your flight. You land already connected. No airport kiosk. No SIM card tray. No waiting.
The Travel eSIM FAQs page covers device compatibility, dual SIM setup, and common first-use questions for anyone who wants more detail before buying for the first time.
The numbers
I track my business expenses carefully. Here is what changed:
Before — averaging $108 per trip across roaming add-ons, airport SIM cards, and backup data purchases. Eight trips per year. Annual data spend: approximately $864.
After — averaging $18 per trip using plans found through the comparison with a discount code applied. Eight trips per year. Annual data spend: approximately $144.
Annual saving: $720.
The comparison takes five minutes. The eSIM installation takes two. The habit took one trip to establish and has been automatic ever since.
Why I think this belongs on IH
The Indie Hackers community is full of people who optimise their tools, their subscriptions, their workflows — and then somehow accept travel data as a fixed cost that is not worth questioning.
The infrastructure to do this better has existed for a while. A platform that adds price-per-GB transparency to a fragmented market, aggregates eSIM coupon codes across all providers, and makes the comparison fast enough that people actually complete it — that is a genuinely useful product solving a real information asymmetry problem.
And for anyone in this community who travels internationally with any regularity: the comparison is free, takes five minutes, and covers 150+ countries. The only cost is the five minutes. The return is consistent savings on every trip going forward.
What is the most impactful small habit you have built around travel or business expenses? Always curious what others in this community have found worth systematising.
Tags: travel, tools, cost optimisation, remote work, founder lifestyle, eSIM, international travel, digital nomad, business expenses, indie hacker tools
