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AST to GMP: distance & flight time
Astoria (Astoria Regional Airport) → Seoul (Gimpo International Airport)
5,186 mi
8,346 km · 4,506 nm
10h 38m
estimated nonstop flight time
+16h
time difference · heading northwest
See live AST→GMP fares Phone-only fares on this route — call free
Flight time details
5,186 miles nonstop takes roughly 10h 38m gate to gate, flying northwest. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 16-hour time gain when reading arrival times on your ticket.
The two airports
- AST — Astoria Regional Airport · Astoria, United States
- 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 AST
- KLS · Southwest Washington Regional Airport47 mi away
- OTK · Tillamook Airport51 mi away
- HQM · Bowerman Airport56 mi away
- CLS · Chehalis Centralia Airport56 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 AST from GMP?
The flight distance from Astoria (AST) to Seoul (GMP) is 5,186 miles (8,346 km, 4,506 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from AST to GMP?
A nonstop flight takes about 10h 38m 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 Astoria and Seoul?
Seoul is 16 hours ahead of Astoria.
What is the cheapest way to fly from AST to GMP?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on AST–GMP that never appear on search engines, with no booking fees.