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SUS to PRH: distance & flight time
Null (Spirit of St Louis Airport) → Phrae (Phrae Airport)
8,451 mi
13,600 km · 7,343 nm
17h 2m
estimated nonstop flight time
+12h
time difference · heading north
See live SUS→PRH fares Phone-only fares on this route — call free
Flight time details
8,451 miles nonstop takes roughly 17h 2m gate to gate, flying north. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 12-hour time gain when reading arrival times on your ticket.
The two airports
- SUS — Spirit of St Louis Airport · Null, United States
- PRH — Phrae Airport · Phrae, 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 SUS
- STL · St Louis Lambert International Airport16 mi away
- ALN · St Louis Regional Airport36 mi away
- BLV · Scott AFB/Midamerica Airport45 mi away
- JEF · Jefferson City Memorial Airport81 mi away
Near PRH
- LPT · Lampang Airport44 mi away
- NNT · Nan Airport62 mi away
- THS · Sukhothai Airport66 mi away
- CNX · Chiang Mai International Airport90 mi away
Frequently asked questions
How far is SUS from PRH?
The flight distance from Null (SUS) to Phrae (PRH) is 8,451 miles (13,600 km, 7,343 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from SUS to PRH?
A nonstop flight takes about 17h 2m 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 SUS to PRH?
Nonstop service on SUS–PRH 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 17h 2m nonstop estimate.
What is the time difference between Null and Phrae?
Phrae is 12 hours ahead of Null.
What is the cheapest way to fly from SUS to PRH?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on SUS–PRH that never appear on search engines, with no booking fees.
Why are some SUS to PRH fares phone-only?
Consolidator contracts let us sell certain SUS–PRH 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.