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KOS to HIO: distance & flight time
Sihanoukville (Sihanoukville International Airport) → Hillsboro (Portland Hillsboro Airport)
7,601 mi
12,232 km · 6,605 nm
15h 22m
estimated nonstop flight time
-14h
time difference · heading northeast
See live KOS→HIO fares Phone-only fares on this route — call free
Flight time details
7,601 miles nonstop takes roughly 15h 22m gate to gate, flying northeast. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 14-hour time set-back when reading arrival times on your ticket.
The two airports
- KOS — Sihanoukville International Airport · Sihanoukville, Cambodia
- HIO — Portland Hillsboro Airport · Hillsboro, 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 KOS
- PQC · Phu Quoc International Airport37 mi away
- PNH · Phnom Penh International Airport106 mi away
- VKG · Rach Gia Airport110 mi away
- KZC · Kampong Chhnang Airport132 mi away
Near HIO
- PDX · Portland International Airport17 mi away
- TTD · Portland Troutdale Airport27 mi away
- KLS · Southwest Washington Regional Airport40 mi away
- OTK · Tillamook Airport43 mi away
Frequently asked questions
How far is KOS from HIO?
The flight distance from Sihanoukville (KOS) to Hillsboro (HIO) is 7,601 miles (12,232 km, 6,605 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from KOS to HIO?
A nonstop flight takes about 15h 22m 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 Sihanoukville and Hillsboro?
Hillsboro is 14 hours behind Sihanoukville.
What is the cheapest way to fly from KOS to HIO?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on KOS–HIO that never appear on search engines, with no booking fees.