Need help booking?
Unpublished phone-only deals available
SEM to CNX: distance & flight time
Selma (Craig Field) → Chiang Mai (Chiang Mai International Airport)
8,884 mi
14,297 km · 7,720 nm
17h 53m
estimated nonstop flight time
+12h
time difference · heading north
See live SEM→CNX fares Phone-only fares on this route — call free
Flight time details
8,884 miles nonstop takes roughly 17h 53m gate to gate, flying north. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 12-hour time gain when reading arrival times on your ticket.
The two airports
- SEM — Craig Field · Selma, United States
- CNX — Chiang Mai International Airport · Chiang Mai, Thailand
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 SEM
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
Frequently asked questions
How far is SEM from CNX?
The flight distance from Selma (SEM) to Chiang Mai (CNX) is 8,884 miles (14,297 km, 7,720 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from SEM to CNX?
A nonstop flight takes about 17h 53m 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 Selma and Chiang Mai?
Chiang Mai is 12 hours ahead of Selma.
What is the cheapest way to fly from SEM to CNX?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on SEM–CNX that never appear on search engines, with no booking fees.