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HMY to CEI: distance & flight time
Seosan (Seosan Air Base) → Chiang Rai (Chiang Rai International Airport)
1,978 mi
3,183 km · 1,719 nm
4h 21m
estimated nonstop flight time
—
time difference · heading southwest
See live HMY→CEI fares Phone-only fares on this route — call free
Flight time details
1,978 miles nonstop takes roughly 4h 21m gate to gate, flying southwest. Add 45–90 minutes per connection if there's no nonstop service. Both airports share the same local time, so schedules read exactly as flown.
The two airports
- HMY — Seosan Air Base · Seosan, South Korea
- 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 HMY
- ICN · Incheon International Airport53 mi away
- OSN · Osan Air Base40 mi away
- SWU · Suwon Airport47 mi away
- KUV · Kunsan Air Base56 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 HMY from CEI?
The flight distance from Seosan (HMY) to Chiang Rai (CEI) is 1,978 miles (3,183 km, 1,719 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from HMY to CEI?
A nonstop flight takes about 4h 21m 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 cheapest way to fly from HMY to CEI?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on HMY–CEI that never appear on search engines, with no booking fees.