Search and book cheap flights from London City Airport to Beijing with Netflights.
Beijing has zero airports, so you have more than one option. It could also be worth changing London City Airport to include other airports, to see more flights and, possibly, better prices.
Booking a flight to Beijing with Netflights is easy. You can search by month to see the cheapest day of the week to fly. Plus, you can add accommodation and car hire to your booking.