Need help booking?
Unpublished phone-only deals available
IAD to HLH: distance & flight time
Washington (Washington Dulles International Airport) → Ulanhot (Ulanhot Airport)
6,432 mi
10,351 km · 5,589 nm
13h 5m
estimated nonstop flight time
+12h
time difference · heading north
See live IAD→HLH fares Phone-only fares on this route — call free
Flight time details
6,432 miles nonstop takes roughly 13h 5m 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
- IAD — Washington Dulles International Airport · Washington, 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 IAD
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 IAD from HLH?
The flight distance from Washington (IAD) to Ulanhot (HLH) is 6,432 miles (10,351 km, 5,589 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from IAD to HLH?
A nonstop flight takes about 13h 5m 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 Washington and Ulanhot?
Ulanhot is 12 hours ahead of Washington.
What is the cheapest way to fly from IAD to HLH?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on IAD–HLH that never appear on search engines, with no booking fees.