The cheapest London to Belize return flight on the radar right now is £728, flying with British Airways + Iberia via one or more connections. It covers departures in November 2026, and every dated link below opens that exact LHR–BZE search on Skyscanner. The price we usually record on this route is £711. Across 66 recorded checks it has ranged between £597 and £1,423. Our sampling points to November 2026 as the cheapest month to fly London to Belize.
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 26 other departure cities for Belize, 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 Belize is often still worth booking within a day or two of the fare we found.