The cheapest London to Beijing return flight on the radar right now is £399, flying with Hainan Airlines via one or more connections. It covers departures in November 2026, and every dated link below opens that exact LHR–PEK search on Skyscanner. That is roughly 11% below the £450 this route usually costs. Across 107 recorded checks it has ranged between £379 and £768. Our sampling points to November 2026 as the cheapest month to fly London to Beijing.
Prices are re-checked against Skyscanner automatically, and every one shows when it was last confirmed, so nothing here is older than it looks. Not flying from London? We track 61 other departure cities for Beijing, listed at the foot of this page.
Prices like this tend to vanish fast. If it has gone when you look, try the days either side of the dates above, since London to Beijing is often still worth booking within a day or two of the fare we found.