Need help booking?
Unpublished phone-only deals available
ASM to SYO: distance & flight time
Asmara (Asmara International Airport) → Shonai (Shonai Airport)
6,125 mi
9,858 km · 5,323 nm
12h 29m
estimated nonstop flight time
+6h
time difference · heading northeast
See live ASM→SYO fares Phone-only fares on this route — call free
Flight time details
6,125 miles nonstop takes roughly 12h 29m gate to gate, flying northeast. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 6-hour time gain when reading arrival times on your ticket.
The two airports
- ASM — Asmara International Airport · Asmara, Eritrea
- SYO — Shonai Airport · Shonai, 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 ASM
- MSW · Massawa International Airport40 mi away
- AXU · Axum Airport80 mi away
- MQX · Mekele Airport133 mi away
Near SYO
- GAJ · Yamagata Airport42 mi away
- AXT · Akita Airport60 mi away
- KIJ · Niigata Airport69 mi away
- SDJ · Sendai Airport77 mi away
Frequently asked questions
How far is ASM from SYO?
The flight distance from Asmara (ASM) to Shonai (SYO) is 6,125 miles (9,858 km, 5,323 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from ASM to SYO?
A nonstop flight takes about 12h 29m 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 Asmara and Shonai?
Shonai is 6 hours ahead of Asmara.
What is the cheapest way to fly from ASM to SYO?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on ASM–SYO that never appear on search engines, with no booking fees.