T2 (Star Alliance), T3 (oneworld and others), T4 (SkyTeam, Etihad), T5 (British Airways, Iberia). T1 is closed. This page covers what to expect on the ground — free Wi-Fi reality, mobile signal at the gate, ground transport into London, and how to skip the SIM-card booth queue.
Free airport Wi-Fi
Excellent
Distance to London
24 km
Best local carrier
EE has the UK's best 4G/5G network. Vodafone is a strong second. O2 and Three are budget-friendly but slower in cities.
United Kingdom eSIM
from $4.00
Free Wi-Fi & mobile signal at LHR
Free Wi-Fi: "_Heathrow Wi-Fi" — unlimited, no signup, very fast (60–200 Mbps).
Mobile signal at arrival: EE, Vodafone, O2, Three — all four UK carriers have full 4G/5G coverage airside. EE is consistently the fastest.
SIM kiosk pricing reality: WHSmith and Sim Local kiosks in arrivals sell tourist SIMs for £10–25. UK eSIMs from LTE.app start lower and skip the queue.
Plaza Premium lounges across T2, T3, T4 — Priority Pass accepted, ~50 Mbps Wi-Fi. The BA Galleries lounges in T5 have the best Wi-Fi at 100+ Mbps.
Currency & ATMs
HSBC ATMs in arrivals give a fair rate. Travelex is poor.
LHR is a Helium reward zone
⚡ 5× airport
Members earn 5× HNT rewards for being online at airport hexes. Map shows the live coverage zones across United Kingdom.
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How to activate your eSIM for United Kingdom
1
Choose your plan in LTE.app
Browse United Kingdom plans and select one that fits your trip length. Takes under a minute.
2
Scan the QR code in your phone settings
iOS: Settings → Cellular → Add eSIM. Android: Settings → Network → SIM → Add eSIM. Scan the QR and confirm.
3
Board your flight
Your eSIM is installed. No action needed during the flight. Keep your home SIM active for calls and texts.
4
Land at Heathrow Airport — you're connected
The eSIM connects automatically to a United Kingdom carrier. By the time you reach baggage claim, you have data.
FAQ — LHR Heathrow Airport
Is there free Wi-Fi at Heathrow Airport?
Yes — "_Heathrow Wi-Fi" — unlimited, no signup, very fast (60–200 Mbps). A United Kingdom eSIM still gives you reliable data the moment you land and continues working throughout your trip, not just inside the terminal.
How do I get from Heathrow Airport to London?
Heathrow Airport has multiple options: Elizabeth Line (30 min to Paddington, 45 min to Liverpool Street, £12.80 (peak) / £10.70 (off-peak)); Heathrow Express (15 min to Paddington (non-stop), £25 (or £5.50 if booked 90 days ahead)); Piccadilly Line (Tube) (50–60 min to central London, £5.50 (off-peak) / £6.00 (peak) contactless). The airport is about 24 km from London.
Can I buy a SIM card at Heathrow Airport?
Yes — WHSmith and Sim Local kiosks in arrivals sell tourist SIMs for £10–25. UK eSIMs from LTE.app start lower and skip the queue.
Which mobile carrier should I use at Heathrow Airport?
EE has the UK's best 4G/5G network. Vodafone is a strong second. O2 and Three are budget-friendly but slower in cities. LTE.app eSIM plans automatically connect to the best available signal at Heathrow Airport and throughout United Kingdom.
When should I install my eSIM for United Kingdom?
Install your eSIM at home before your flight, while connected to Wi-Fi. It takes under two minutes — just scan a QR code in your phone settings. Activation happens automatically when you land at Heathrow Airport and connect to the local network.