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SEP to ISL: distance & flight time
Stephenville (Stephenville Clark Regional Airport) → Istanbul (Atatürk International Airport)
6,356 mi
10,229 km · 5,523 nm
12h 56m
estimated nonstop flight time
+8h
time difference · heading northeast
See live SEP→ISL fares Phone-only fares on this route — call free
Flight time details
6,356 miles nonstop takes roughly 12h 56m 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
- ISL — Atatürk International Airport · Istanbul, 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 ISL
- IST · Istanbul Airport21 mi away
- SAW · Sabiha Gökçen International Airport26 mi away
- TEQ · Tekirdağ Çorlu Airport48 mi away
- BTZ · Bursa Airport52 mi away
Frequently asked questions
How far is SEP from ISL?
The flight distance from Stephenville (SEP) to Istanbul (ISL) is 6,356 miles (10,229 km, 5,523 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from SEP to ISL?
A nonstop flight takes about 12h 56m 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 Istanbul?
Istanbul is 8 hours ahead of Stephenville.
What is the cheapest way to fly from SEP to ISL?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on SEP–ISL that never appear on search engines, with no booking fees.