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HIO to ONQ: distance & flight time
Hillsboro (Portland Hillsboro Airport) → Zonguldak (Zonguldak Airport)
6,228 mi
10,024 km · 5,412 nm
12h 41m
estimated nonstop flight time
+10h
time difference · heading north
See live HIO→ONQ fares Phone-only fares on this route — call free
Flight time details
6,228 miles nonstop takes roughly 12h 41m gate to gate, flying north. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 10-hour time gain when reading arrival times on your ticket.
The two airports
- HIO — Portland Hillsboro Airport · Hillsboro, United States
- ONQ — Zonguldak Airport · Zonguldak, Turkey
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 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
Near ONQ
- KFS · Kastamonu Airport89 mi away
- ESB · Esenboğa International Airport106 mi away
- ANK · Etimesgut Air Base112 mi away
- KCO · Cengiz Topel Airport117 mi away
Frequently asked questions
How far is HIO from ONQ?
The flight distance from Hillsboro (HIO) to Zonguldak (ONQ) is 6,228 miles (10,024 km, 5,412 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from HIO to ONQ?
A nonstop flight takes about 12h 41m 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 Hillsboro and Zonguldak?
Zonguldak is 10 hours ahead of Hillsboro.
What is the cheapest way to fly from HIO to ONQ?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on HIO–ONQ that never appear on search engines, with no booking fees.