Need help booking?
Unpublished phone-only deals available
STL to HLH: distance & flight time
St. Louis (St Louis Lambert International Airport) → Ulanhot (Ulanhot Airport)
6,235 mi
10,034 km · 5,418 nm
12h 42m
estimated nonstop flight time
+13h
time difference · heading north
See live STL→HLH fares Phone-only fares on this route — call free
Flight time details
6,235 miles nonstop takes roughly 12h 42m gate to gate, flying north. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 13-hour time gain when reading arrival times on your ticket.
The two airports
- STL — St Louis Lambert International Airport · St. Louis, United States
- HLH — Ulanhot Airport · Ulanhot, China
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 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
Frequently asked questions
How far is STL from HLH?
The flight distance from St. Louis (STL) to Ulanhot (HLH) 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 STL to HLH?
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 St. Louis and Ulanhot?
Ulanhot is 13 hours ahead of St. Louis.
What is the cheapest way to fly from STL to HLH?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on STL–HLH that never appear on search engines, with no booking fees.