Not every flight from Delhi to Tokyo takes the same path right now.
All 3 assessed routes are currently rated Flowing.
Via Hong Kong — clean airspace routing, with moderate detour impact and strong hub reliability.
Advisory-clean DEL–NRT routing via Hong Kong. The DEL–HKG leg routes southeast over Myanmar and the Bay of Bengal then northeast into South China Sea — avoids Central Asian FIRs entirely. The HKG–NRT leg is advisory-clean over the East China Sea. Cathay Pacific provides strong DEL–HKG connectivity with onward NRT service. Preferred when Central Asian FIR advisories are elevated. Adds ~1.3h versus the Central Asia direct.
DEL–HKG–NRT is fully advisory-clean. Monitor HKG transit time; Cathay Pacific's DEL–HKG schedule should allow adequate connection time for NRT onward flight.
Fully advisory-clean DEL–NRT routing via Singapore. The DEL–SIN leg routes south over the Indian subcontinent, entirely avoiding Central Asian FIRs. The SIN–NRT leg tracks northeast through Southeast Asian FIRs and the South China Sea — also fully clean. Singapore Airlines operates both legs. Longest routing at ~10.2h total; preferred when both Central Asian advisories and northern South China Sea routing are elevated.
The primary DEL–NRT routing tracks north over Pakistan and Kazakhstan before crossing Central Asia into China FIR and then Japan. Air India, JAL, and ANA all operate direct service on this corridor. The route carries airspace_score 1 due to Central Asian corridor congestion and the Iranian FIR proximity on the western segment near departure — the initial climb out of DEL briefly approaches the IRI/PAK FIR boundary. When Central Asian FIR advisories are stable this is the fastest option.
Active disruptions
FlightDetour evaluates route options using advisory airspace exposure, corridor sensitivity, detour impact, and hub routing logic — based on publicly available EASA and national authority advisories.
Coverage focuses on major long-haul corridors. Some routing patterns — including certain China-side connections via mainland Chinese hubs — are not yet included. If you expect an option here and don't see it, that's a coverage gap, not an assessment.
Scores compare corridor quality; they do not predict airline operations or safety outcomes. Verify with your airline and government travel advisories before booking.
Full methodology →Advisory data only · Verify before booking