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ROI to SPF: distance & flight time
Roi Et (Roi Et Airport) → Spearfish-South Dakota (Black Hills Airport-Clyde Ice Field)
7,905 mi
12,721 km · 6,869 nm
15h 58m
estimated nonstop flight time
-13h
time difference · heading north
See live ROI→SPF fares Phone-only fares on this route — call free
Flight time details
7,905 miles nonstop takes roughly 15h 58m gate to gate, flying north. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 13-hour time set-back when reading arrival times on your ticket.
The two airports
- ROI — Roi Et Airport · Roi Et, Thailand
- SPF — Black Hills Airport-Clyde Ice Field · Spearfish-South Dakota, United States
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 ROI
- KKC · Khon Kaen Airport70 mi away
- BFV · Buri Ram Airport70 mi away
- ZVK · Savannakhet Airport72 mi away
- SNO · Sakon Nakhon Airport78 mi away
Near SPF
- RCA · Ellsworth Air Force Base41 mi away
- RAP · Rapid City Regional Airport47 mi away
- GCC · Gillette Campbell County Airport87 mi away
- CDR · Chadron Municipal Airport119 mi away
Frequently asked questions
How far is ROI from SPF?
The flight distance from Roi Et (ROI) to Spearfish-South Dakota (SPF) is 7,905 miles (12,721 km, 6,869 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from ROI to SPF?
A nonstop flight takes about 15h 58m 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 Roi Et and Spearfish-South Dakota?
Spearfish-South Dakota is 13 hours behind Roi Et.
What is the cheapest way to fly from ROI to SPF?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on ROI–SPF that never appear on search engines, with no booking fees.