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SYO to STL: distance & flight time
Shonai (Shonai Airport) → St. Louis (St Louis Lambert International Airport)
6,207 mi
9,989 km · 5,393 nm
12h 38m
estimated nonstop flight time
-14h
time difference · heading northeast
See live SYO→STL fares Phone-only fares on this route — call free
Flight time details
6,207 miles nonstop takes roughly 12h 38m gate to gate, flying northeast. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 14-hour time set-back when reading arrival times on your ticket.
The two airports
- SYO — Shonai Airport · Shonai, Japan
- STL — St Louis Lambert International Airport · St. Louis, 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 STL
- SUS · Spirit of St Louis Airport16 mi away
- ALN · St Louis Regional Airport20 mi away
- BLV · Scott AFB/Midamerica Airport32 mi away
- SPI · Abraham Lincoln Capital Airport84 mi away
Frequently asked questions
How far is SYO from STL?
The flight distance from Shonai (SYO) to St. Louis (STL) is 6,207 miles (9,989 km, 5,393 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from SYO to STL?
A nonstop flight takes about 12h 38m 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 St. Louis?
St. Louis is 14 hours behind Shonai.
What is the cheapest way to fly from SYO to STL?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on SYO–STL that never appear on search engines, with no booking fees.