Need help booking?
Unpublished phone-only deals available
HLH to STL: distance & flight time
Ulanhot (Ulanhot Airport) → St. Louis (St Louis Lambert International Airport)
6,235 mi
10,034 km · 5,418 nm
12h 42m
estimated nonstop flight time
-13h
time difference · heading northeast
See live HLH→STL fares Phone-only fares on this route — call free
Flight time details
6,235 miles nonstop takes roughly 12h 42m gate to gate, flying northeast. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 13-hour time set-back when reading arrival times on your ticket.
The two airports
- HLH — Ulanhot Airport · Ulanhot, China
- STL — St Louis Lambert International Airport · 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 HLH
- DBC · Baicheng Chang'an Airport68 mi away
- NDG · Qiqihar Sanjiazi Airport116 mi away
- NZL · Chengjisihan Airport121 mi away
- YIE · Arxan Yi'ershi Airport126 mi away
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
Frequently asked questions
How far is HLH from STL?
The flight distance from Ulanhot (HLH) to St. Louis (STL) is 6,235 miles (10,034 km, 5,418 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from HLH to STL?
A nonstop flight takes about 12h 42m 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 Ulanhot and St. Louis?
St. Louis is 13 hours behind Ulanhot.
What is the cheapest way to fly from HLH to STL?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on HLH–STL that never appear on search engines, with no booking fees.