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ROI to ALN: distance & flight time
Roi Et (Roi Et Airport) → Alton/St Louis (St Louis Regional Airport)
8,533 mi
13,732 km · 7,415 nm
17h 12m
estimated nonstop flight time
—
time difference · heading north
See live ROI→ALN fares Phone-only fares on this route — call free
Flight time details
8,533 miles nonstop takes roughly 17h 12m gate to gate, flying north. 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
- ROI — Roi Et Airport · Roi Et, Thailand
- ALN — St Louis Regional Airport · Alton/St Louis, 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 ALN
- STL · St Louis Lambert International Airport20 mi away
- BLV · Scott AFB/Midamerica Airport26 mi away
- SUS · Spirit of St Louis Airport36 mi away
- SPI · Abraham Lincoln Capital Airport69 mi away
Frequently asked questions
How far is ROI from ALN?
The flight distance from Roi Et (ROI) to Alton/St Louis (ALN) is 8,533 miles (13,732 km, 7,415 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from ROI to ALN?
A nonstop flight takes about 17h 12m 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 ROI to ALN?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on ROI–ALN that never appear on search engines, with no booking fees.