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ROI to PHN: distance & flight time
Roi Et (Roi Et Airport) → Port Huron (St Clair County International Airport)
8,339 mi
13,420 km · 7,246 nm
16h 49m
estimated nonstop flight time
-11h
time difference · heading north
See live ROI→PHN fares Phone-only fares on this route — call free
Flight time details
8,339 miles nonstop takes roughly 16h 49m gate to gate, flying north. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 11-hour time set-back when reading arrival times on your ticket.
The two airports
- ROI — Roi Et Airport · Roi Et, Thailand
- PHN — St Clair County International Airport · Port Huron, 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 PHN
Frequently asked questions
How far is ROI from PHN?
The flight distance from Roi Et (ROI) to Port Huron (PHN) is 8,339 miles (13,420 km, 7,246 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from ROI to PHN?
A nonstop flight takes about 16h 49m 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 ROI to PHN?
Nonstop service on ROI–PHN 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 16h 49m nonstop estimate.
What is the time difference between Roi Et and Port Huron?
Port Huron is 11 hours behind Roi Et.
What is the cheapest way to fly from ROI to PHN?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on ROI–PHN that never appear on search engines, with no booking fees.
Why are some ROI to PHN fares phone-only?
Consolidator contracts let us sell certain ROI–PHN 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.