London has six officially recognised international airports: the London Heathrow Airport (LHR), the London Gatwick Airport (LGW), the London Stansted Airport (STN), the London Luton Airport (LTN), the London City Airport (LCY) and the London Southend Airport (SEN).
These airports handled a total of 179,242,557 passengers in 2025, a slight increase from 2024’s 177,626,648. These insane numbers show how popular these airports are, more specifically, how popular the UK is in terms of visitors. There are many things that someone who’s visiting the UK has to think about. A reliable mobile connection is one of them.
Many might say that these airports have stores that sell SIM cards.
But physical SIM cards, especially for tourists, are irrelevant in 2026. eSIMs are what we recommend.
This article dives deep into this concept. It answers some questions you might have regarding eSIMs in the UK. We have also listed some recommendations for you to get started and a detailed guide on how to activate an eSIM at London Airports. Continue reading!
Should You Buy an eSIM Before or After Arriving at London Airports?
This question is irrelevant if you opt for Lyca Mobile, as you can get one of the eSIM + plan bundles from anywhere in the world.
You can purchase a Lyca Mobile eSIM from your home country or wait until you land at a London airport.
All six London airports come with free Wi-Fi. Here are the network names you should connect to.
- Heathrow: _Heathrow Wi-Fi (Heathrow Airport Free Wi-Fi page)
- Gatwick: Free Gatwick Wi-Fi Vinci Airports (Gatwick Airport Free Wi-Fi page)
- Stansted: _stanstedairport or Stansted Airport Free Wi-Fi (Stansted Airport Free Wi-Fi page)
- Luton: Luton Airport WIFI (Luton Airport Free Wi-Fi page)
- City: LCY Airport Free Wi-Fi (City Airport Free Wi-Fi page)
- Southend: London Southend Free WiFi (Southend Airport Free Wi-Fi page)
The terms and conditions of each airport might vary. Visit the linked pages to know more.
Once you are connected to the airport’s Wi-Fi network, all you have to do is use one of the modes of payment to complete the purchase.
You’ll receive a thank you email from Lyca Mobile confirming your order. This email will also contain the activation QR code that you have to scan to activate your eSIM + plan bundle.
The Best Lyca Mobile eSIM Plans for Tourists Landing in London
Lyca Mobile has numerous eSIM plans that help tourists stay connected in the UK. Not just the UK, these plans come with roaming data for the EU as well.
Here is Lyca Mobile’s range of eSIM plans for tourists landing in London.
| Plan Name | Price | Monthly Data | National Calls & Texts | International Minutes | EU & India Roaming | China Roaming |
|---|---|---|---|---|---|---|
| All In One Plus 20 | £20.00 | 100 GB | Unlimited | Unlimited | 12 GB | 2GB |
| All In One Plus 15 | £15.00 | 50 GB | Unlimited | 500 | 12 GB | 1.5 GB |
| All In One 10 | £9.90 | 10 GB | Unlimited | 200 | 5 GB | 500 MB |
The best part about these plans is that you don’t have to pass a credit check to buy one. Just pick a plan and complete the purchase. You’ll be all set to activate the eSIM and start using the benefits in as little as 15 minutes.
London Airport eSIM vs Physical SIM Card: Which is Better?
A London airport eSIM is better than a physical SIM card in every aspect. Here is a comparison of a London airport eSIM with a physical SIM card.
| Features | eSIM | Physical SIM Card |
| Setup | Fully digital. Scan a QR code to activate the eSIM. | Manual setup. Use the SIM ejector tool to access the SIM tray and insert the SIM card. |
| Switching Profiles | Done instantly. Devices can store up to 8 eSIM profiles. | Have to manually replace SIM card. You’ll have to carry additional SIM cards if you switch often. |
| Installation Method | Connect to the internet, purchase a plan and activate eSIM. | Find a store, wait in the queue, purchase a SIM card and insert it your smartphone. Things can get difficult if you don’t have a SIM ejector tool. |
| Involves SIM Swapping | No | Yes |
| Risk of Loss & Damage | Minimal | Physical SIM cards are vulnerable to damage and wear. |
| Environmental Impact | Nothing to dispose of. | SIM cards are made of plastic, contain metal contacts and come in paper packaging, all of which contribute to e-waste. |
The verdict? Always opt for an eSIM at London airport over physical SIM cards. You don’t have to wait in a queue or fiddle with a SIM ejector tool.
The Checklist of Things You’ll Need When Buying an eSIM at London Airport
The process of buying an eSIM is straightforward. But, like every other process, there are some pointers you should keep in mind when you buy an eSIM at London Airport.
- An eSIM-Compatible Smartphone: Before buying an eSIM plan, make sure you have an eSIM-compatible device. You can check this by looking for an EID in the Settings app. Your device also shouldn’t be locked to a specific carrier.
- Stable Internet Connection: An internet connection is essential to download and activate an eSIM profile to your device. Connect to a stable source of internet, preferably Wi-Fi, to ensure the eSIM activation process goes smoothly.
- A Valid Email Address: The activation QR code and other details are sent via email to the customer. So it helps to have an email address that you have access to and use often.
Now that you have all the essentials, pick one of the Lyca Mobile plans mentioned above and complete the purchase. Then head to the section below to find out how you can activate an eSIM at London airport.
How to Activate an eSIM
Activating a Lyca Mobile eSIM is a simple process that can be completed in less than 30 minutes. Follow the steps below and you’ll have a UK number with call, text and data benefits for the UK and the EU in no time.
Step 1: Look for the activation QR code inside the thank you email from Lyca Mobile.
Step 2: Scan the activation QR code using your camera.
Step 3: Follow the prompts that appear on the screen.
After successful activation, the signal bars should refresh, and you will receive a confirmation message. That’s it! You can now enjoy super-fast 5G internet, high-quality calls and other mobile services for the next 30 days. Once the 30 days are up, you get to decide whether to continue with the same plan or choose a different plan.
Conclusion
If there’s one group that benefits the most from eSIMs, it’s travellers. eSIMs give travellers the freedom to use mobile services without having to swap SIM cards and wait in long queues at airport SIM stores.
Operators like Lyca Mobile also allow you to purchase an eSIM from your home country. All you have to do after landing is connect to the airport Wi-Fi and scan the QR code. You will get a UK number that can be used across the UK and the EU. The number is valid in select Asian countries as well, depending on the plan you choose.
Not just travellers, eSIMs are beneficial to anyone looking for a convenient and eco-friendly alternative to physical SIM cards.
Get a Lyca Mobile eSIM and enjoy reliable connectivity across the UK and the EU!
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FAQs
Can I buy an eSIM at Heathrow Airport?
Yes, you can buy an eSIM at Heathrow Airport. Lyca Mobile has self-serving digital eSIM kiosks at Terminal 2 and airside in Terminal 5. You can instantly purchase and activate a Lyca Mobile eSIM through these kiosks.
Which London airports sell eSIMs?
You can get an eSIM from all airports in London. Just connect to the airport’s free Wi-Fi network and head to the official Lyca Mobile website to purchase an eSIM + plan bundle.
Do I need Wi-Fi to activate an eSIM?
Yes, you will need Wi-Fi to activate an eSIM. Since the eSIM profile is downloaded through the internet, you will have to be connected to a stable internet connection. This can be either Wi-Fi or a cellular network.
Can I activate my eSIM before landing?
No, you cannot activate your eSIM before landing. Lyca Mobile eSIMs have to be activated in the UK. That said, you can purchase the eSIM in your home country and activate it after you land in the UK.
Will my home SIM card still work?
Yes, your home SIM card will work without any issues. The Lyca Mobile eSIM will allow you to access mobile services while you are in the UK, and the home SIM card can stay active for receiving OTPs. However, do remember to disable roaming on your home SIM card to avoid exorbitant charges.
Which phones support eSIM?
Most modern devices support eSIMs. To confirm device compatibility, look for the Add eSIM option inside the Settings app. You could also dial *#06# on your phone. If you see an EID, then you have an eSIM-compatible smartphone.
Can I use my Lyca Mobile eSIM across Europe?
Yes, you can use your Lyca Mobile eSIM across Europe. Select Lyca Mobile eSIM bundles come with roaming data that can be used across the EU.
Is an eSIM cheaper than airport roaming?
Yes, an eSIM is a lot cheaper than roaming. Roaming usually involves international pay-as-you-go rates, which are on the higher side. A Lyca Mobile eSIM, on the other hand, comes with call, text, and data benefits for the UK and roaming data for the EU at no additional cost.