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SYO to AST: distance & flight time
Shonai (Shonai Airport) → Astoria (Astoria Regional Airport)
4,622 mi
7,438 km · 4,016 nm
9h 32m
estimated nonstop flight time
-16h
time difference · heading northeast
See live SYO→AST fares Phone-only fares on this route — call free
Flight time details
4,622 miles nonstop takes roughly 9h 32m gate to gate, flying northeast. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 16-hour time set-back when reading arrival times on your ticket.
The two airports
- SYO — Shonai Airport · Shonai, Japan
- AST — Astoria Regional Airport · Astoria, United States
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 SYO
- GAJ · Yamagata Airport42 mi away
- AXT · Akita Airport60 mi away
- KIJ · Niigata Airport69 mi away
- SDJ · Sendai Airport77 mi away
Near AST
- KLS · Southwest Washington Regional Airport47 mi away
- OTK · Tillamook Airport51 mi away
- HQM · Bowerman Airport56 mi away
- CLS · Chehalis Centralia Airport56 mi away
Frequently asked questions
How far is SYO from AST?
The flight distance from Shonai (SYO) to Astoria (AST) is 4,622 miles (7,438 km, 4,016 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from SYO to AST?
A nonstop flight takes about 9h 32m 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 Shonai and Astoria?
Astoria is 16 hours behind Shonai.
What is the cheapest way to fly from SYO to AST?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on SYO–AST that never appear on search engines, with no booking fees.