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STL to SWU: distance & flight time
St. Louis (St Louis Lambert International Airport) → Suwon (Suwon Airport)
6,673 mi
10,739 km · 5,799 nm
13h 33m
estimated nonstop flight time
+14h
time difference · heading northwest
See live STL→SWU fares Phone-only fares on this route — call free
Flight time details
6,673 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
- SWU — Suwon Airport · Suwon, 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 SWU
- ICN · Incheon International Airport34 mi away
- OSN · Osan Air Base10 mi away
- SSN · Seoul Air Base (K-16)15 mi away
- GMP · Gimpo International Airport25 mi away
Frequently asked questions
How far is STL from SWU?
The flight distance from St. Louis (STL) to Suwon (SWU) is 6,673 miles (10,739 km, 5,799 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from STL to SWU?
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 Suwon?
Suwon is 14 hours ahead of St. Louis.
What is the cheapest way to fly from STL to SWU?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on STL–SWU that never appear on search engines, with no booking fees.