Passes near restricted airspace — not directly through it
Watchful 59

LHR → NRT

Clear of advisory zones — fewer backup paths than top alternatives
Watchful 59

Via Istanbul

London → Tokyo

Route last assessed 2d ago

Airspace

Near zone

Alt routes

Weak

Via

IST

~15h

Best for

Viable LHR→NRT option, but the IST–NRT leg fully traverses the Central Asian corridor — the longest exposure to that congestion bottleneck of any option on this pair.

Weakness

Limited alternative paths if the main corridor is disrupted

Watch

Check Eurocontrol Central Asian ATFM status before each leg. Delays on the IST–NRT segment of 45–90 minutes are not unusual during peak restriction periods.

Evaluated using advisory airspace exposure, corridor sensitivity, detour impact, and hub routing logic — based on EASA and national authority advisories.

Advisory data only · Verify with your airline and government before booking.

Methodology →