Do eSIMs Work on Planes? Everything You Need to Know

Short answer: no, a travel eSIM does not provide mobile data during a flight at cruising altitude. Longer answer: it is more nuanced than that, and understanding how eSIM behaves during flights will help you plan your connectivity properly.

What happens to your eSIM when you enter aeroplane mode?

When you enable aeroplane mode on your phone, all wireless transmissions are disabled -- this includes 4G/5G, Wi-Fi, and Bluetooth by default. Your eSIM is part of the cellular radio, so it is switched off along with everything else. The eSIM itself is not affected or damaged by aeroplane mode; it simply stops transmitting until you turn aeroplane mode off.

Can you use Wi-Fi on a plane with your eSIM?

Yes and no. Many airlines now offer in-flight Wi-Fi, which is a separate satellite-based internet connection. You connect your phone to the aircraft's Wi-Fi network the same way you connect to any Wi-Fi network. Your eSIM is not involved in this connection. However, in-flight Wi-Fi typically costs extra and is often slower than ground-based mobile data.

Do eSIMs try to connect to mobile networks during flight?

When aeroplane mode is off and your phone can detect a signal, it will attempt to connect to any available network -- including ground networks visible at low altitude during takeoff and landing. Always enable aeroplane mode as instructed by the cabin crew before departure.

When does your eSIM start working on a trip?

• Before departure: Your eSIM is installed but keep it toggled off until you arrive
• During flight: No eSIM mobile data access at cruising altitude
• On approach and landing: Your phone should remain in aeroplane mode
• After landing: Disable aeroplane mode and your eSIM will find a local network within a minute or two
• At the airport: Full eSIM connectivity before you reach baggage claim

Is there any eSIM service at altitude?

A small number of airlines in 2025-2026 are beginning to trial satellite-based mobile connectivity that allows standard mobile data use in-flight. This is different from standard travel eSIM service -- your travel eSIM may or may not connect, depending on the carrier agreements involved. This is very new technology and not yet universal.

Frequently asked questions

Will putting my phone in aeroplane mode damage my eSIM? Absolutely not. Aeroplane mode simply disables the radio transmitters -- it does not affect the eSIM chip, your stored profiles, or your data allowance in any way.