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UTH to STL: distance & flight time
Udon Thani (Udon Thani Airport) → St. Louis (St Louis Lambert International Airport)
8,466 mi
13,624 km · 7,357 nm
17h 4m
estimated nonstop flight time
-12h
time difference · heading north
See live UTH→STL fares Phone-only fares on this route — call free
Flight time details
8,466 miles nonstop takes roughly 17h 4m gate to gate, flying north. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 12-hour time set-back when reading arrival times on your ticket.
The two airports
- UTH — Udon Thani Airport · Udon Thani, Thailand
- 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 UTH
- VTE · Wattay International Airport44 mi away
- KKC · Khon Kaen Airport64 mi away
- LOE · Loei Airport70 mi away
- SNO · Sakon Nakhon Airport89 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 UTH from STL?
The flight distance from Udon Thani (UTH) to St. Louis (STL) is 8,466 miles (13,624 km, 7,357 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from UTH to STL?
A nonstop flight takes about 17h 4m 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 Udon Thani and St. Louis?
St. Louis is 12 hours behind Udon Thani.
What is the cheapest way to fly from UTH to STL?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on UTH–STL that never appear on search engines, with no booking fees.