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HIO to CEI: distance & flight time
Hillsboro (Portland Hillsboro Airport) → Chiang Rai (Chiang Rai International Airport)
7,175 mi
11,547 km · 6,235 nm
14h 32m
estimated nonstop flight time
+14h
time difference · heading northwest
See live HIO→CEI fares Phone-only fares on this route — call free
Flight time details
7,175 miles nonstop takes roughly 14h 32m gate to gate, flying northwest. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 14-hour time gain when reading arrival times on your ticket.
The two airports
- HIO — Portland Hillsboro Airport · Hillsboro, United States
- CEI — Chiang Rai International Airport · Chiang Rai, 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 HIO
- PDX · Portland International Airport17 mi away
- TTD · Portland Troutdale Airport27 mi away
- KLS · Southwest Washington Regional Airport40 mi away
- OTK · Tillamook Airport43 mi away
Near CEI
- THL · Tachileik Airport37 mi away
- HOE · Ban Huoeisay Airport42 mi away
- MOG · Mong Hsat Airport56 mi away
- KET · Kengtung Airport95 mi away
Frequently asked questions
How far is HIO from CEI?
The flight distance from Hillsboro (HIO) to Chiang Rai (CEI) is 7,175 miles (11,547 km, 6,235 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from HIO to CEI?
A nonstop flight takes about 14h 32m 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 Hillsboro and Chiang Rai?
Chiang Rai is 14 hours ahead of Hillsboro.
What is the cheapest way to fly from HIO to CEI?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on HIO–CEI that never appear on search engines, with no booking fees.