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HMY to ROI: distance & flight time
Seosan (Seosan Air Base) → Roi Et (Roi Et Airport)
1,989 mi
3,201 km · 1,728 nm
4h 22m
estimated nonstop flight time
—
time difference · heading southwest
See live HMY→ROI fares Phone-only fares on this route — call free
Flight time details
1,989 miles nonstop takes roughly 4h 22m 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
- ROI — Roi Et Airport · Roi Et, 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 ROI
- KKC · Khon Kaen Airport70 mi away
- BFV · Buri Ram Airport70 mi away
- ZVK · Savannakhet Airport72 mi away
- SNO · Sakon Nakhon Airport78 mi away
Frequently asked questions
How far is HMY from ROI?
The flight distance from Seosan (HMY) to Roi Et (ROI) is 1,989 miles (3,201 km, 1,728 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from HMY to ROI?
A nonstop flight takes about 4h 22m gate to gate. Actual time varies with winds, routing and season — eastbound transatlantic flights, for example, are usually faster than the return.
Are there nonstop flights from HMY to ROI?
Nonstop service on HMY–ROI depends on the season and the day of week. Run the fare search on this page with the nonstop filter applied to see current direct options; when there is no nonstop, a single connection through a carrier hub adds roughly 2–4 hours to the 4h 22m nonstop estimate.
What is the cheapest way to fly from HMY to ROI?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on HMY–ROI that never appear on search engines, with no booking fees.
Why are some HMY to ROI fares phone-only?
Consolidator contracts let us sell certain HMY–ROI tickets below the price airlines permit us to publish online, so those fares can only be quoted over the phone. Call the travel desk and an agent will check phone-only inventory for your dates.