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UTH to ALN: distance & flight time
Udon Thani (Udon Thani Airport) → Alton/St Louis (St Louis Regional Airport)
8,461 mi
13,616 km · 7,352 nm
17h 3m
estimated nonstop flight time
—
time difference · heading north
See live UTH→ALN fares Phone-only fares on this route — call free
Flight time details
8,461 miles nonstop takes roughly 17h 3m gate to gate, flying north. Add 45–90 minutes per connection if there's no nonstop service. Both airports share the same local time, so schedules read exactly as flown.
The two airports
- UTH — Udon Thani Airport · Udon Thani, Thailand
- ALN — St Louis Regional Airport · Alton/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 ALN
- STL · St Louis Lambert International Airport20 mi away
- BLV · Scott AFB/Midamerica Airport26 mi away
- SUS · Spirit of St Louis Airport36 mi away
- SPI · Abraham Lincoln Capital Airport69 mi away
Frequently asked questions
How far is UTH from ALN?
The flight distance from Udon Thani (UTH) to Alton/St Louis (ALN) is 8,461 miles (13,616 km, 7,352 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from UTH to ALN?
A nonstop flight takes about 17h 3m 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 cheapest way to fly from UTH to ALN?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on UTH–ALN that never appear on search engines, with no booking fees.