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RDG to USM: distance & flight time
Reading (Reading Regional Carl A Spaatz Field) → Ko Samui (Samui Airport)
8,978 mi
14,449 km · 7,802 nm
18h 4m
estimated nonstop flight time
+11h
time difference · heading north
See live RDG→USM fares Phone-only fares on this route — call free
Flight time details
8,978 miles nonstop takes roughly 18h 4m gate to gate, flying north. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 11-hour time gain when reading arrival times on your ticket.
The two airports
- RDG — Reading Regional Carl A Spaatz Field · Reading, United States
- USM — Samui Airport · Ko Samui, 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 RDG
- PHL · Philadelphia International Airport52 mi away
- LNS · Lancaster Airport25 mi away
- CTH · Chester County G O Carlson Airport28 mi away
- UKT · Quakertown Airport31 mi away
Near USM
- URT · Surat Thani Airport69 mi away
- NST · Nakhon Si Thammarat Airport70 mi away
- CJM · Chumphon Airport93 mi away
- UNN · Ranong Airport102 mi away
Frequently asked questions
How far is RDG from USM?
The flight distance from Reading (RDG) to Ko Samui (USM) is 8,978 miles (14,449 km, 7,802 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from RDG to USM?
A nonstop flight takes about 18h 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 Reading and Ko Samui?
Ko Samui is 11 hours ahead of Reading.
What is the cheapest way to fly from RDG to USM?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on RDG–USM that never appear on search engines, with no booking fees.