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STL to UNN: distance & flight time
St. Louis (St Louis Lambert International Airport) → Ranong (Ranong Airport)
9,035 mi
14,540 km · 7,851 nm
18h 11m
estimated nonstop flight time
+12h
time difference · heading north
See live STL→UNN fares Phone-only fares on this route — call free
Flight time details
9,035 miles nonstop takes roughly 18h 11m 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
- UNN — Ranong Airport · Ranong, 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 UNN
- KAW · Kawthoung Airport19 mi away
- URT · Surat Thani Airport58 mi away
- CJM · Chumphon Airport83 mi away
- VBP · Bokpyinn Airport95 mi away
Frequently asked questions
How far is STL from UNN?
The flight distance from St. Louis (STL) to Ranong (UNN) is 9,035 miles (14,540 km, 7,851 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from STL to UNN?
A nonstop flight takes about 18h 11m 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 Ranong?
Ranong is 12 hours ahead of St. Louis.
What is the cheapest way to fly from STL to UNN?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on STL–UNN that never appear on search engines, with no booking fees.