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STL to KOP: distance & flight time
St. Louis (St Louis Lambert International Airport) → Nakhon Phanom (Nakhon Phanom Airport)
8,439 mi
13,580 km · 7,333 nm
17h 1m
estimated nonstop flight time
+12h
time difference · heading north
See live STL→KOP fares Phone-only fares on this route — call free
Flight time details
8,439 miles nonstop takes roughly 17h 1m gate to gate, flying north. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 12-hour time gain when reading arrival times on your ticket.
The two airports
- STL — St Louis Lambert International Airport · St. Louis, United States
- KOP — Nakhon Phanom Airport · Nakhon Phanom, Thailand
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 KOP
- SNO · Sakon Nakhon Airport37 mi away
- ZVK · Savannakhet Airport58 mi away
- ROI · Roi Et Airport105 mi away
- VII · Vinh Airport115 mi away
Frequently asked questions
How far is STL from KOP?
The flight distance from St. Louis (STL) to Nakhon Phanom (KOP) is 8,439 miles (13,580 km, 7,333 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from STL to KOP?
A nonstop flight takes about 17h 1m 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 Nakhon Phanom?
Nakhon Phanom is 12 hours ahead of St. Louis.
What is the cheapest way to fly from STL to KOP?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on STL–KOP that never appear on search engines, with no booking fees.