Connectivity Without Boundaries
Founded by two passionate travellers, OnAirSim was born from firsthand experiences with the frustrations of global connectivity. After encountering excessive roaming charges post Brexit, struggling to purchase local SIMs at Chennai Airport, dealing with late night arrivals with closed telecommunications counters, and facing complex documentation requirements in Bangladesh, we knew there had to be a better way.

Our Story

Our personal travel challenges ignited a simple yet powerful idea: what if staying connected abroad could be seamless, affordable, and stress free? Those £2 per day roaming charges and the anxiety of landing in a new country without immediate connectivity became our catalyst for change.

OnAirSim emerged as our solution, offering travellers the ability to purchase eSIMs before departure, ensuring instant connectivity upon landing anywhere in the world. No more queuing at airport kiosks, no more extensive paperwork, and no more extortionate roaming fees.

What We Offer

For International Travellers
Our global eSIM solutions provide cost effective data packages across international destinations including Europe, Asia, Americas, Africa, and Australia. Purchase before you fly and enjoy immediate connectivity the moment your plane touches down. No activation steps required. You'll be connected as soon as you land.

With OnAirSim, you can book your Uber or taxi instantly upon arrival, wasting no precious holiday time searching for a SIM card. Better yet, call your loved ones directly from the airport to update them on your whereabouts at any airport worldwide. No more waiting, no more worrying.

Our international eSIMs work with all eSIM compatible smartphones including iPhone (XR and newer), Samsung Galaxy (S20 and newer), Google Pixel (3 and newer), and other modern devices that support digital SIM technology.

For UK Customers
We've expanded our services to include competitive domestic monthly tariffs with generous data allowances and unlimited minutes, often outperforming traditional providers on both service and price. Our UK eSIM plans include options for 5G connectivity, unlimited data packages, pay as you go options, and special deals for students and businesses.

For Businesses
OnAirSim delivers comprehensive telecom solutions including BT business lines, mobile packages tailored for enterprise needs, and flexible options designed for companies of all sizes. Our business eSIM solutions offer multi device management, centralised billing, data sharing across team members, and custom packages for frequent business travellers.

For Partners
Our affiliate programme enables promoters to share in our success while helping more people discover truly boundaryless connectivity. Join our network of travel bloggers, digital nomads, and global business partners.

How eSIMs Work

Unlike physical SIM cards, eSIMs (embedded SIMs) are built directly into your device. Setting up your OnAirSim eSIM is simple:

1. Purchase your preferred eSIM plan on onairsim.com
2. Scan the QR code we provide
3. Follow your device's simple setup instructions
4. Enjoy instant connectivity upon arrival at your destination

Our eSIMs support dual SIM functionality, allowing you to keep your home number active while using local data abroad. Perfect for receiving important calls and texts while avoiding excessive international roaming charges.

Why Choose OnAirSim eSIMs for Travel

- Avoid roaming charges - Save up to 90% compared to standard network provider roaming fees
- Instant connectivity - No hunting for local SIM shops or dealing with language barriers
- Multiple destination coverage - Single eSIMs covering multiple countries for seamless regional travel
- Flexible data packages - From 1GB for weekend trips to unlimited data for longer stays
- No physical SIM needed - No tiny SIM cards to lose or special SIM tools required
- Environmentally friendly - Reduce plastic waste from disposable SIM cards

Our Mission

At OnAirSim, we're dedicated to making data boundaryless. We believe that staying connected shouldn't be complicated or expensive, whether you're travelling abroad or seeking better value at home.

We're passionate about keeping you OnAir connected, communicative, and confident regardless of where your journey takes you.

Join us in reimagining connectivity for a world that never stops moving. Experience the freedom of always being connected with OnAirSim's innovative eSIM technology.