Need help booking?
Unpublished phone-only deals available
NHT to GMP: distance & flight time
Northolt (RAF Northolt) → Seoul (Gimpo International Airport)
5,505 mi
8,859 km · 4,783 nm
11h 16m
estimated nonstop flight time
+8h
time difference · heading northeast
See live NHT→GMP fares Phone-only fares on this route — call free
Flight time details
5,505 miles nonstop takes roughly 11h 16m gate to gate, flying northeast. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 8-hour time gain when reading arrival times on your ticket.
The two airports
- NHT — RAF Northolt · Northolt, United Kingdom
- GMP — Gimpo International Airport · Seoul, South Korea
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 NHT
- LHR · London Heathrow Airport6 mi away
- LGW · London Gatwick Airport30 mi away
- HYC · Wycombe Air Park17 mi away
- LCY · London City Airport21 mi away
Near GMP
- ICN · Incheon International Airport20 mi away
- SSN · Seoul Air Base (K-16)19 mi away
- SWU · Suwon Airport25 mi away
- OSN · Osan Air Base35 mi away
Frequently asked questions
How far is NHT from GMP?
The flight distance from Northolt (NHT) to Seoul (GMP) is 5,505 miles (8,859 km, 4,783 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from NHT to GMP?
A nonstop flight takes about 11h 16m 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 Northolt and Seoul?
Seoul is 8 hours ahead of Northolt.
What is the cheapest way to fly from NHT to GMP?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on NHT–GMP that never appear on search engines, with no booking fees.