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STL to YEC: distance & flight time
St. Louis (St Louis Lambert International Airport) → Yechon (Yecheon Airbase)
6,674 mi
10,741 km · 5,800 nm
13h 33m
estimated nonstop flight time
+14h
time difference · heading northwest
See live STL→YEC fares Phone-only fares on this route — call free
Flight time details
6,674 miles nonstop takes roughly 13h 33m gate to gate, flying northwest. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 14-hour time gain when reading arrival times on your ticket.
The two airports
- STL — St Louis Lambert International Airport · St. Louis, United States
- YEC — Yecheon Airbase · Yechon, South Korea
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 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
Near YEC
Frequently asked questions
How far is STL from YEC?
The flight distance from St. Louis (STL) to Yechon (YEC) is 6,674 miles (10,741 km, 5,800 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from STL to YEC?
A nonstop flight takes about 13h 33m 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 St. Louis and Yechon?
Yechon is 14 hours ahead of St. Louis.
What is the cheapest way to fly from STL to YEC?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on STL–YEC that never appear on search engines, with no booking fees.