{"found":"archive","route":{"route":"London to Hanoi","origin":{"city":"London","code":"LON","country":"GB"},"destination":{"city":"Hanoi","code":"HAN","country":"VN"},"distanceKm":9234,"page":"https://flat.flights/routes/london-to-hanoi/","bookingLink":"https://flat.flights/go/london-to-hanoi/?d=2026-12-16&r=2027-01-05&src=api&c=claude","cheapest":{"priceEur":4069,"priceUsd":4497,"depart":"2026-12-16","return":"2027-01-05","stops":1,"seenOn":"2026-11-12"},"fares":[{"priceEur":4069,"depart":"2026-12-16","return":"2027-01-05","stops":1,"seenOn":"2026-11-12"}],"months":{"2026-12":4069},"later":null,"verdict":{"text":"€4,069 is in line with this route's 10-day average of €4,078 (range €3,611–€4,438 since 2026-10-25).","basis":"history","referenceEur":4078,"vsReferencePct":0},"cheapestMonth":{"month":"2026-12","priceEur":4069},"nonstop":null,"oneWay":null,"firstClass":null,"nonstopFlights":{"checked":"2026-11-08","groups":[{"from":"LHR","to":"HAN","flights":[{"airline":"VN","name":"Vietnam Airlines","flight":"56"}],"lieFlat":true}]},"lieFlat":{"status":"likely","basis":"Nonstop flights seen include ones sold only by airlines whose long-haul business class has lie-flat seats (Vietnam Airlines); connecting itineraries depend on the airlines used."},"daysTracked":10,"trackedSince":"2026-10-25","history":{"days":10,"since":"2026-10-25","averageEur":4078,"lowEur":3611,"highEur":4438},"bookingLink2Adults":"https://flat.flights/go/london-to-hanoi/?d=2026-12-16&r=2027-01-05&src=api&c=claude&a=2","firstClassLink":"https://flat.flights/go/london-to-hanoi/?cabin=first&d=2026-12-16&r=2027-01-05&src=api&c=claude","premiumEconomyLink":"https://flat.flights/go/london-to-hanoi/?cabin=premium&d=2026-12-16&r=2027-01-05&src=api&c=claude","bookingSearch":{"partner":"Aviasales","depart":"2026-12-16","return":"2027-01-05","adults":1},"tripEssentials":{"hotelsLink":"https://flat.flights/go/hotels/?city=hanoi&d=2026-12-16&r=2027-01-05&src=api&c=claude","transferLink":"https://flat.flights/go/transfer/?city=hanoi&src=api&c=claude","esimLink":"https://flat.flights/go/esim/?country=vn&city=hanoi&src=api&c=claude"}},"fetchedAt":"2026-11-14T11:28:01.600Z","requested":null}