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IST to SEP: distance & flight time
Istanbul (Istanbul Airport) → Stephenville (Stephenville Clark Regional Airport)
6,339 mi
10,201 km · 5,508 nm
12h 54m
estimated nonstop flight time
-8h
time difference · heading northwest
See live IST→SEP fares Phone-only fares on this route — call free
Flight time details
6,339 miles nonstop takes roughly 12h 54m gate to gate, flying northwest. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 8-hour time set-back when reading arrival times on your ticket.
The two airports
- IST — Istanbul Airport · Istanbul, Turkey
- SEP — Stephenville Clark Regional Airport · Stephenville, 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 IST
- ISL · Atatürk International Airport21 mi away
- SAW · Sabiha Gökçen International Airport39 mi away
- TEQ · Tekirdağ Çorlu Airport44 mi away
- BTZ · Bursa Airport73 mi away
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
Frequently asked questions
How far is IST from SEP?
The flight distance from Istanbul (IST) to Stephenville (SEP) is 6,339 miles (10,201 km, 5,508 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from IST to SEP?
A nonstop flight takes about 12h 54m 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 Istanbul and Stephenville?
Stephenville is 8 hours behind Istanbul.
What is the cheapest way to fly from IST to SEP?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on IST–SEP that never appear on search engines, with no booking fees.