Layover calculator — London Heathrow Airport (LHR)

Enter your connection details below. The estimate uses known terminal connections, security re-check rules, and facility locations — each backed by sources and a last-verified date. Where data is missing the result says so instead of guessing.

Known terminal connections at LHR

FromToModeAirside possibleEst. minutesSecurity re-checkSource
T2 T3 walk No 10–10 Unknown official source
T3 T2 walk No 10–10 Unknown official source
T2 T4 train No 20–30 Unknown official source
T2 T5 train No 20–20 Unknown official source
T3 T4 train No 20–30 Unknown official source
T3 T5 train No 20–20 Unknown official source
T4 T2 train No 20–20 Unknown official source
T4 T3 train No 20–20 Unknown official source
T4 T5 train No 30–30 Unknown official source
T4 T5 bus No 25–25 Unknown official source
T5 T2 train No 20–20 Unknown official source
T5 T3 train No 20–20 Unknown official source
T5 T4 train No 30–30 Unknown official source
T5 T4 bus No 25–25 Unknown official source