The cheapest flight to London you can get by boooking 9 days before departure.
The most popular airlines on the route Knock - London: Ryanair (FR).
The cheapest flights you can book on the route Ireland West (NOC) - Luton (LTN).
Direct flights last about 1h 20min.
Direct flights available 4 days a week - Wednesday, Thursday, Friday, Saturday.
Direct flights: Ryanair (FR), Aer Lingus (EI).