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STL to PHS: distance & flight time
St. Louis (St Louis Lambert International Airport) → Phitsanulok (Phitsanulok Airport)
8,539 mi
13,741 km · 7,420 nm
17h 13m
estimated nonstop flight time
+12h
time difference · heading north
See live STL→PHS fares Phone-only fares on this route — call free
Flight time details
8,539 miles nonstop takes roughly 17h 13m 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
- STL — St Louis Lambert International Airport · St. Louis, United States
- PHS — Phitsanulok Airport · Phitsanulok, 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 STL
- SUS · Spirit of St Louis Airport16 mi away
- ALN · St Louis Regional Airport20 mi away
- BLV · Scott AFB/Midamerica Airport32 mi away
- SPI · Abraham Lincoln Capital Airport84 mi away
Near PHS
- THS · Sukhothai Airport44 mi away
- PHY · Phetchabun Airport61 mi away
- TKT · Tak Airport68 mi away
- PRH · Phrae Airport94 mi away
Frequently asked questions
How far is STL from PHS?
The flight distance from St. Louis (STL) to Phitsanulok (PHS) is 8,539 miles (13,741 km, 7,420 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from STL to PHS?
A nonstop flight takes about 17h 13m 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 STL to PHS?
Nonstop service on STL–PHS 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 13m nonstop estimate.
What is the time difference between St. Louis and Phitsanulok?
Phitsanulok is 12 hours ahead of St. Louis.
What is the cheapest way to fly from STL to PHS?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on STL–PHS that never appear on search engines, with no booking fees.
Why are some STL to PHS fares phone-only?
Consolidator contracts let us sell certain STL–PHS 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.