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RJCM → UHSSOpen in the mapper
ROUTE DISTANCE

Ōzora to Yuzhno-SakhalinskRJCM → UHSS

Memanbetsu Airport (RJCM / MMB) in Ōzora, Japan to Yuzhno-Sakhalinsk International Airport (UHSS / UUS) in Yuzhno-Sakhalinsk, Russia is 190 nautical miles — 352 kilometres, or 219 statute miles — on the great circle, on an initial bearing of 342°. A business jet at Mach 0.85 and FL410 takes about 0h 55m block time in still air.

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

NAUTICAL MILES
190
KILOMETRES
352
STATUTE MILES
219
INITIAL BEARING
342°
BLOCK TIME
0h 55m
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 · 3%clears
G5506,550 nm usable · 3%clears
Global 75007,500 nm usable · 3%clears
Falcon 8X6,250 nm usable · 3%clears
Falcon 7X5,750 nm usable · 3%clears
Challenger 3503,000 nm usable · 6%clears
A350-9008,250 nm usable · 2%clears
B777-300ER7,120 nm usable · 3%clears
A320neo3,150 nm usable · 6%clears
A3203,150 nm usable · 6%clears
B737 MAX 83,250 nm usable · 6%clears
B737-8002,850 nm usable · 7%clears
An-1242,950 nm usable · 6%clears
Concorde3,650 nm usable · 5%clears
King Air 2001,400 nm usable · 14%clears
ATR 721,300 nm usable · 15%clears
Dash 8 Q4001,100 nm usable · 17%clears

How far from an airport?

Nowhere on the great circle is more than 20 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

RJCM / MMB
Memanbetsu Airport
Ōzora, Hokkaidō Prefecture, Japan43.8806, 144.164041 m · 135 ft elevationlongest runway 18/36 · 2,500 m
UHSS / UUS
Yuzhno-Sakhalinsk International Airport
Yuzhno-Sakhalinsk, Sakhalin Oblast, Russia46.8855, 142.717518 m · 59 ft elevationlongest runway 01/19 · 3,400 m

Questions people ask about this route

How far is it from Ōzora (RJCM) to Yuzhno-Sakhalinsk (UHSS)?

190 nautical miles. That is 352 kilometres or 219 statute miles, measured as a great circle between Memanbetsu Airport and Yuzhno-Sakhalinsk International Airport.

How long is the flight from Ōzora to Yuzhno-Sakhalinsk?

About 0h 55m 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 Ōzora (RJCM) to Yuzhno-Sakhalinsk (UHSS)?

342° 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 Ōzora to Yuzhno-Sakhalinsk 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 RJCM → UHSS
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