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CNX to SEP: distance & flight time
Chiang Mai (Chiang Mai International Airport) → Stephenville (Stephenville Clark Regional Airport)
8,736 mi
14,060 km · 7,592 nm
17h 36m
estimated nonstop flight time
-12h
time difference · heading north
See live CNX→SEP fares Phone-only fares on this route — call free
Flight time details
8,736 miles nonstop takes roughly 17h 36m gate to gate, flying north. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 12-hour time set-back when reading arrival times on your ticket.
The two airports
- CNX — Chiang Mai International Airport · Chiang Mai, Thailand
- 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 CNX
- LPT · Lampang Airport49 mi away
- PYY · Mae Hong Son Airport54 mi away
- HGN · Mae Hong Son Airport74 mi away
- PRH · Phrae Airport90 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 CNX from SEP?
The flight distance from Chiang Mai (CNX) to Stephenville (SEP) is 8,736 miles (14,060 km, 7,592 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from CNX to SEP?
A nonstop flight takes about 17h 36m 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 Chiang Mai and Stephenville?
Stephenville is 12 hours behind Chiang Mai.
What is the cheapest way to fly from CNX to SEP?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on CNX–SEP that never appear on search engines, with no booking fees.