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SIR to OKO: distance & flight time
Sion (Sion Airport) → Yokota (Yokota Air Base)
6,037 mi
9,715 km · 5,246 nm
12h 18m
estimated nonstop flight time
+7h
time difference · heading northeast
See live SIR→OKO fares Phone-only fares on this route — call free
Flight time details
6,037 miles nonstop takes roughly 12h 18m gate to gate, flying northeast. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 7-hour time gain when reading arrival times on your ticket.
The two airports
- SIR — Sion Airport · Sion, Switzerland
- OKO — Yokota Air Base · Yokota, 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 SIR
- AOT · Aosta Airport33 mi away
- QLS · Lausanne-Blécherette Airport41 mi away
- ZIN · Interlaken Air Base41 mi away
- MVV · Megève Airport43 mi away
Near OKO
- HND · Tokyo Haneda International Airport28 mi away
- NRT · Narita International Airport58 mi away
- NJA · Atsugi Naval Air Facility21 mi away
- IBR · Hyakuri Airport67 mi away
Frequently asked questions
How far is SIR from OKO?
The flight distance from Sion (SIR) to Yokota (OKO) is 6,037 miles (9,715 km, 5,246 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from SIR to OKO?
A nonstop flight takes about 12h 18m 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 Sion and Yokota?
Yokota is 7 hours ahead of Sion.
What is the cheapest way to fly from SIR to OKO?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on SIR–OKO that never appear on search engines, with no booking fees.