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RER to USN: distance & flight time
Retalhuleu (Retalhuleu Airport) → Ulsan (Ulsan Airport)
8,056 mi
12,965 km · 7,001 nm
16h 16m
estimated nonstop flight time
+15h
time difference · heading northwest
See live RER→USN fares Phone-only fares on this route — call free
Flight time details
8,056 miles nonstop takes roughly 16h 16m gate to gate, flying northwest. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 15-hour time gain when reading arrival times on your ticket.
The two airports
- RER — Retalhuleu Airport · Retalhuleu, Guatemala
- USN — Ulsan Airport · Ulsan, 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 RER
- AAZ · Quezaltenango Airport27 mi away
- TAP · Tapachula International Airport49 mi away
- AQB · Santa Cruz del Quiche Airport50 mi away
- GSJ · San José Airport70 mi away
Near USN
- KPO · Pohang Airport (G-815/K-3)28 mi away
- PUS · Gimhae International Airport37 mi away
- TAE · Daegu Airport44 mi away
- CHF · Jinhae Airbase/Airport (G-813/K-10)48 mi away
Frequently asked questions
How far is RER from USN?
The flight distance from Retalhuleu (RER) to Ulsan (USN) is 8,056 miles (12,965 km, 7,001 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from RER to USN?
A nonstop flight takes about 16h 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 Retalhuleu and Ulsan?
Ulsan is 15 hours ahead of Retalhuleu.
What is the cheapest way to fly from RER to USN?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on RER–USN that never appear on search engines, with no booking fees.