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GMP to HAF: distance & flight time
Seoul (Gimpo International Airport) → Half Moon Bay (Half Moon Bay Airport)
5,627 mi
9,056 km · 4,890 nm
11h 30m
estimated nonstop flight time
—
time difference · heading northeast
See live GMP→HAF fares Phone-only fares on this route — call free
Flight time details
5,627 miles nonstop takes roughly 11h 30m gate to gate, flying northeast. 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
- GMP — Gimpo International Airport · Seoul, South Korea
- HAF — Half Moon Bay Airport · Half Moon Bay, 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 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
Near HAF
- SFO · San Francisco International Airport10 mi away
- SQL · San Carlos Airport14 mi away
- OAK · Metropolitan Oakland International Airport21 mi away
- PAO · Palo Alto Airport of Santa Clara County21 mi away
Frequently asked questions
How far is GMP from HAF?
The flight distance from Seoul (GMP) to Half Moon Bay (HAF) is 5,627 miles (9,056 km, 4,890 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from GMP to HAF?
A nonstop flight takes about 11h 30m 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 GMP to HAF?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on GMP–HAF that never appear on search engines, with no booking fees.