Need help booking?
Unpublished phone-only deals available
RML to OIR: distance & flight time
Colombo (Colombo Ratmalana Airport) → Okushiri (Okushiri Airport)
4,357 mi
7,011 km · 3,786 nm
9h 1m
estimated nonstop flight time
+3.5h
time difference · heading northeast
See live RML→OIR fares Phone-only fares on this route — call free
Flight time details
4,357 miles nonstop takes roughly 9h 1m gate to gate, flying northeast. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 3.5-hour time gain when reading arrival times on your ticket.
The two airports
- RML — Colombo Ratmalana Airport · Colombo, Sri Lanka
- OIR — Okushiri Airport · Okushiri, Japan
Distances are great-circle ("as the crow flies") — the same basis airlines use for frequent-flyer miles.
Alternate airports can cut this fare
Flying from or into a nearby airport is the #1 trick our agents use to beat online prices. Call and we'll compare every combination on one call.
Near RML
- CMB · Bandaranaike International Colombo Airport25 mi away
- KCT · Koggala Airport65 mi away
- HRI · Mattala Rajapaksa International Airport93 mi away
- GIU · Sigiriya Air Force Base97 mi away
Near OIR
- HKD · Hakodate Airport74 mi away
- AOJ · Aomori Airport113 mi away
- OKD · Okadama Airport123 mi away
- CTS · New Chitose Airport125 mi away
Frequently asked questions
How far is RML from OIR?
The flight distance from Colombo (RML) to Okushiri (OIR) is 4,357 miles (7,011 km, 3,786 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from RML to OIR?
A nonstop flight takes about 9h 1m gate to gate. Actual time varies with winds, routing and season — eastbound transatlantic flights, for example, are usually faster than the return.
What is the time difference between Colombo and Okushiri?
Okushiri is 3.5 hours ahead of Colombo.
What is the cheapest way to fly from RML to OIR?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on RML–OIR that never appear on search engines, with no booking fees.