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CAT to CEI: distance & flight time
Cascais (Cascais Airport) → Chiang Rai (Chiang Rai International Airport)
6,330 mi
10,187 km · 5,501 nm
12h 53m
estimated nonstop flight time
+6h
time difference · heading northeast
See live CAT→CEI fares Phone-only fares on this route — call free
Flight time details
6,330 miles nonstop takes roughly 12h 53m gate to gate, flying northeast. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 6-hour time gain when reading arrival times on your ticket.
The two airports
- CAT — Cascais Airport · Cascais, Portugal
- 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 CAT
- LIS · Humberto Delgado Airport (Lisbon Portela Airport)12 mi away
- AVR · Alverca Air Base21 mi away
- QLR · Monte Real Air Base80 mi away
- BYJ · Beja Airport / Airbase89 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 CAT from CEI?
The flight distance from Cascais (CAT) to Chiang Rai (CEI) is 6,330 miles (10,187 km, 5,501 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from CAT to CEI?
A nonstop flight takes about 12h 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 Cascais and Chiang Rai?
Chiang Rai is 6 hours ahead of Cascais.
What is the cheapest way to fly from CAT to CEI?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on CAT–CEI that never appear on search engines, with no booking fees.