Every London–Seoul fare we track, measured against the route's typical price whenever there is enough cached history to build one. Subscribe in any RSS reader for free single-route price alerts — no account, no email needed.https://flight.dealsen-ushttps://flight.deals/flights/london-to-seoul/#2026-09-18-2026-09-30-CAhttps://flight.deals/flights/london-to-seoul/#2026-09-18-2026-09-30-CALON → SEL round-trip on Air China, 2026-09-18 to 2026-09-30 (12 nights). Cached fare $570 vs typical $760.Tue, 01 Sep 2026 12:09:07 GMT