Airports / Japan / RJTJ
Field elevation
Nearest alternate
Field standing
6 nm
To the nearest alternate
Yokota Air Base (OKO) — 6 fields within 50 nm.
Overview
Iruma Air Base (RJTJ) is a mid-sized airport serving Sayama, Japan. Field elevation is 295 feet above sea level. Free of scheduled airline operations, it serves business aviation, charter flights, and local general aviation.
While no charter operators list RJTJ as their home base, the field is reachable for repositioned charter aircraft from nearby bases. The closest alternate fields are Yokota Air Base (OKO, 6 nm), Chofu Airport (RJTF, 12 nm), and JMSDF Atsugi Air Base / Naval Air Facility Atsugi (NJA, 23 nm).
Trip costs from RJTJ are driven by the aircraft category flown and how far it must reposition. You may also see the field referenced as Johnson Air Base. Browse operators flying from the area or estimate a trip cost from RJTJ to plan your flight.
Field capability
ICAO
RJTJ
IATA
—
FAA / Local
RJTJ
Elevation
295 ft
Coordinates
35.8419° N · 139.4110° E
Airspace
G · GolfClass G — GolfUncontrolled field — no tower. Pilots self-announce and sequence themselves on the common traffic advisory frequency.Source: FAA NASR class airspace
Size
Medium
Scheduled svc
No
Elevation vs Japan fields
state range 6–2,182 ft
At 295 ft, RJTJ sits higher than 76% of the 107 Japan fields on the register.
Access & alternates
Closest alternate fields by great-circle distance — every listing links to its own field brief.
- 6nmOKOYokota Air BaseFussa
- 12nmRJTFChofu AirportChofu
- 23nmNJAJMSDF Atsugi Air Base / Naval Air Facility AtsugiAyase / Yamato
- 25nmHNDTokyo Haneda International AirportTokyo
- 29nmRJTLJMSDF Shimofusa Air BaseMatsudo
- 36nmRJTKJGSDF Kisarazu AirfieldKisarazu
Location
Open the full mapRJTJ · Iruma Air Base · Sayama, Japan