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RJTA → RJTOOpen in the mapper
ROUTE DISTANCE

Ayase / Yamato to Izu OshimaRJTA → RJTO

JMSDF Atsugi Air Base / Naval Air Facility Atsugi (RJTA / NJA) in Ayase / Yamato, Japan to Oshima Airport (RJTO / OIM) in Izu Oshima, Japan is 41 nautical miles — 76 kilometres, or 47 statute miles — on the great circle, on an initial bearing of 186°. A business jet at Mach 0.85 and FL410 takes about 0h 35m block time in still air.

Published by Overfly · Airport data: OurAirports, · Last updated

NAUTICAL MILES
41
KILOMETRES
76
STATUTE MILES
47
INITIAL BEARING
186°
BLOCK TIME
0h 35m
M0.85 · FL410 · still air

Can the aeroplane make it?

Range here is usable range — book range at long-range cruise, less a reserve allowance. It is the figure that decides whether the leg closes, and it is the question most mappers do not answer.

G650ER7,300 nm usable · 1%clears
G5506,550 nm usable · 1%clears
Global 75007,500 nm usable · 1%clears
Falcon 8X6,250 nm usable · 1%clears
Falcon 7X5,750 nm usable · 1%clears
Challenger 3503,000 nm usable · 1%clears
A350-9008,250 nm usable · 0%clears
B777-300ER7,120 nm usable · 1%clears
A320neo3,150 nm usable · 1%clears
A3203,150 nm usable · 1%clears
B737 MAX 83,250 nm usable · 1%clears
B737-8002,850 nm usable · 1%clears
An-1242,950 nm usable · 1%clears
Concorde3,650 nm usable · 1%clears
King Air 2001,400 nm usable · 3%clears
ATR 721,300 nm usable · 3%clears
Dash 8 Q4001,100 nm usable · 4%clears

How far from an airport?

Nowhere on the great circle is more than 7 minutes from a suitable airport at the one-engine diversion speed Overfly uses (430 kt in still air), so a twin-engine aircraft flies it under the 60-minute rule, with no ETOPS approval needed.

A suitable airport here is one OurAirports classes as large with a runway of 8,000 ft or more. An operator’s real alternates also depend on weather, fire cover and approval, and its diversion speed on the type. More in equal-time points and ETOPS, explained.

The two fields

RJTA / NJA
JMSDF Atsugi Air Base / Naval Air Facility Atsugi
Ayase / Yamato, Kanagawa Prefecture, Japan35.4546, 139.450062 m · 205 ft elevationlongest runway 01/19 · 2,438 m
RJTO / OIM
Oshima Airport
Izu Oshima, Tōkyō Prefecture, Japan34.7820, 139.360040 m · 130 ft elevationlongest runway 03/21 · 1,800 m

Questions people ask about this route

How far is it from Ayase / Yamato (RJTA) to Izu Oshima (RJTO)?

41 nautical miles. That is 76 kilometres or 47 statute miles, measured as a great circle between JMSDF Atsugi Air Base / Naval Air Facility Atsugi and Oshima Airport.

How long is the flight from Ayase / Yamato to Izu Oshima?

About 0h 35m block time for a business jet cruising at Mach 0.85 at FL410 in still air, including 30 minutes of taxi, climb and descent. Wind moves that figure in either direction — eastbound across the North Atlantic or the Pacific it can be an hour or more. This page is deliberately still-air so the figure is stable and citable; to apply the month's average upper winds from NOAA, open the route in the mapper and switch on seasonal winds.

What is the initial bearing from Ayase / Yamato (RJTA) to Izu Oshima (RJTO)?

186° true at the departure point. A great circle changes heading continuously, so this is the initial bearing, not a constant one.

Which aircraft can fly Ayase / Yamato to Izu Oshima non-stop?

Of the types Overfly carries, G650ER, G550, Global 7500, Falcon 8X, Falcon 7X, Challenger 350, A350-900, B777-300ER, A320neo, A320, B737 MAX 8, B737-800, An-124, Concorde, King Air 200, ATR 72, Dash 8 Q400 clear it on usable range — that is book range less a reserve allowance.

Check it against your own aircraft
Open the route in the mapper to set cruise, flight level and reserve, edit the schedule, and add legs.
Open RJTA → RJTO
NEARBY ROUTES

For reference and planning interest. Not for operational flight planning. Distances are great circle on a sphere from WGS-84 coordinates; block times assume still air. © 2026 Overfly.Flights