Boston
BOS
→ Ulaanbaatar
UBN
✈ No nonstop. Fastest via Beijing (PEK) · about 15h 4m
🎫 Award: 40,000 ANA miles+ / 47,000 JAL miles+
(economy, one way, est.)
10,004 km · flying time is an estimate
See routes and map on Hopmap →