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SEP to ONQ: distance & flight time
Stephenville (Stephenville Clark Regional Airport) → Zonguldak (Zonguldak Airport)
6,441 mi
10,366 km · 5,597 nm
13h 6m
estimated nonstop flight time
+8h
time difference · heading northeast
See live SEP→ONQ fares Phone-only fares on this route — call free
Flight time details
6,441 miles nonstop takes roughly 13h 6m gate to gate, flying northeast. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 8-hour time gain when reading arrival times on your ticket.
The two airports
- SEP — Stephenville Clark Regional Airport · Stephenville, 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 SEP
- MWL · Mineral Wells Airport40 mi away
- DFW · Dallas Fort Worth International Airport81 mi away
- BKD · Stephens County Airport54 mi away
- FWH · NAS Fort Worth JRB/Carswell Field57 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 SEP from ONQ?
The flight distance from Stephenville (SEP) to Zonguldak (ONQ) is 6,441 miles (10,366 km, 5,597 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from SEP to ONQ?
A nonstop flight takes about 13h 6m 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 Stephenville and Zonguldak?
Zonguldak is 8 hours ahead of Stephenville.
What is the cheapest way to fly from SEP to ONQ?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on SEP–ONQ that never appear on search engines, with no booking fees.