HK ExpressDepart22:25
Thu, 17 DecHKG → UBN
5h 30m · 1 stop
US$286one way, per person
View deal
- Cheapest fare
- US$257
- Cheapest month
- December
- Direct flights
- Yes
- Flight time
- 4h 40m
Hong Kong Airlines · Wed, 30 Dec
from US$257
MIAT Mongolian Airlines
2,920 km
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Cheapest month to fly from Hong Kong to Ulaanbaatar
Lowest one-way fare per person in each month. Choose a month to see every date.
Cheapest dates in December 2026
The lowest fares we've seen for each day, cheapest first.
See every date in December 2026 →
Plan the rest of your trip to Ulaanbaatar
Where to stay, what to do and getting around, from our travel partners.
Getting around
About flights from Hong Kong to Ulaanbaatar
Hong Kong (HKG) and Ulaanbaatar (UBN) are about 2,920 km apart. Direct flights take around 4h 40m, and recent direct fares were with MIAT Mongolian Airlines. Over the next few months, one-way fares start from US$257, and December 2026 is currently the cheapest month to fly.
These prices come from searches travellers made in the last 48 hours, so they move quickly. If you see a good fare, it's worth booking soon. FlightsExp is free to use: you book directly with our travel partner.
Frequently asked questions
How much is a flight from Hong Kong to Ulaanbaatar?
The cheapest one-way fare we've seen recently is US$257 with Hong Kong Airlines, departing Wednesday, 30 December 2026. Over the coming months, the lowest fare in each month ranges from US$257 to US$311.
What is the cheapest month to fly from Hong Kong to Ulaanbaatar?
December 2026 currently has the lowest fares, from US$257 one way.
Are there direct flights from Hong Kong to Ulaanbaatar?
Yes. Recent direct fares were with MIAT Mongolian Airlines.
How long is the flight from Hong Kong to Ulaanbaatar?
A direct flight takes about 4h 40m. Hong Kong and Ulaanbaatar are around 2,920 km apart.
Which airlines fly from Hong Kong to Ulaanbaatar?
Recent fares on this route were with MIAT Mongolian Airlines, Hong Kong Airlines, Air China and HK Express.
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