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USM to LCY: distance & flight time
Ko Samui (Samui Airport) → London (London City Airport)
6,127 mi
9,860 km · 5,324 nm
12h 29m
estimated nonstop flight time
-6h
time difference · heading northwest
See live USM→LCY fares Phone-only fares on this route — call free
Flight time details
6,127 miles nonstop takes roughly 12h 29m gate to gate, flying northwest. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 6-hour time set-back when reading arrival times on your ticket.
The two airports
- USM — Samui Airport · Ko Samui, Thailand
- LCY — London City Airport · London, United Kingdom
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 USM
- URT · Surat Thani Airport69 mi away
- NST · Nakhon Si Thammarat Airport70 mi away
- CJM · Chumphon Airport93 mi away
- UNN · Ranong Airport102 mi away
Near LCY
- LHR · London Heathrow Airport22 mi away
- LGW · London Gatwick Airport27 mi away
- BQH · London Biggin Hill Airport12 mi away
- NHT · RAF Northolt21 mi away
Frequently asked questions
How far is USM from LCY?
The flight distance from Ko Samui (USM) to London (LCY) is 6,127 miles (9,860 km, 5,324 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from USM to LCY?
A nonstop flight takes about 12h 29m gate to gate. Actual time varies with winds, routing and season — eastbound transatlantic flights, for example, are usually faster than the return.
Are there nonstop flights from USM to LCY?
Nonstop service on USM–LCY depends on the season and the day of week. Run the fare search on this page with the nonstop filter applied to see current direct options; when there is no nonstop, a single connection through a carrier hub adds roughly 2–4 hours to the 12h 29m nonstop estimate.
What is the time difference between Ko Samui and London?
London is 6 hours behind Ko Samui.
What is the cheapest way to fly from USM to LCY?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on USM–LCY that never appear on search engines, with no booking fees.
Why are some USM to LCY fares phone-only?
Consolidator contracts let us sell certain USM–LCY tickets below the price airlines permit us to publish online, so those fares can only be quoted over the phone. Call the travel desk and an agent will check phone-only inventory for your dates.