Need help booking?
Unpublished phone-only deals available
STL to UIH: distance & flight time
St. Louis (St Louis Lambert International Airport) → Phucat (Phu Cat Airport)
8,585 mi
13,817 km · 7,460 nm
17h 18m
estimated nonstop flight time
+12h
time difference · heading northwest
See live STL→UIH fares Phone-only fares on this route — call free
Flight time details
8,585 miles nonstop takes roughly 17h 18m gate to gate, flying northwest. 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
- UIH — Phu Cat Airport · Phucat, Vietnam
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 UIH
- TBB · Dong Tac Airport66 mi away
- PXU · Pleiku Airport69 mi away
- VCL · Chu Lai International Airport103 mi away
- BMV · Buon Ma Thuot Airport108 mi away
Frequently asked questions
How far is STL from UIH?
The flight distance from St. Louis (STL) to Phucat (UIH) is 8,585 miles (13,817 km, 7,460 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from STL to UIH?
A nonstop flight takes about 17h 18m 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 St. Louis and Phucat?
Phucat is 12 hours ahead of St. Louis.
What is the cheapest way to fly from STL to UIH?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on STL–UIH that never appear on search engines, with no booking fees.