Via Central Asia Direct

The primary NRT–DEL routing tracks westbound across China and Central Asian FIRs before descending into India. Air India, JAL, and ANA all operate direct service. Airspace_score 1 for Central Asian FIR congestion and Iranian FIR proximity on the western segment as the aircraft approaches DEL. When Central Asian FIR advisories are stable this is the fastest option at ~7.3h.

Route passes near an advisory zone (not through it)

Monitor EASA notices for Kazakhstan FIR (UAAA) and Uzbekistan FIR (UTTT). Approach into DEL from the northwest briefly approaches the Iran/Pakistan FIR boundary — verify IRI advisory status. Central Asian FIR congestion can increase when Russian airspace rerouting diverts traffic.