For the cheapest flights to London Heathrow book 3 days before departure.
The most popular airlines on the route Zurich Kloten - London Heathrow: Swiss (LX), SAS (SK), TAP Air Portugal (TP).
Direct flights last about 1h 50min.
Direct flights available 4 days a week - Monday, Friday, Saturday, Sunday.
Direct flights: Swiss (LX), British Airways (BA).