Ulaanbaatar to Hong Kong UBN → HKG
Chinggis Khaan International Airport (UBN) → Hong Kong International Airport (HKG)
The cheapest return found recently is $620 with MIAT Mongolian Airlines, 1 Jan 2027 – 6 Jan 2027, found today. The cheapest one-way found recently is $340 with MIAT Mongolian Airlines, 20 Oct, found 2 days ago.
Return
The cheapest return fare on each of 8 departure dates is usually $527 to $601.
Cheapest return found recently
$620
1 Jan 2027 – 6 Jan 2027 · MIAT Mongolian Airlines
Chinggis Khaan International Airport (UBN) → Hong Kong International Airport (HKG)
Leaves 7:15 a.m. · Return leaves 8:30 p.m. · 9 h 15 min of travel, both ways together
out nonstop, back nonstop
found today
Cheapest nonstop return
$620
1 Jan 2027 – 6 Jan 2027 · MIAT Mongolian Airlines
Chinggis Khaan International Airport (UBN) → Hong Kong International Airport (HKG)
Leaves 7:15 a.m. · Return leaves 8:30 p.m. · 9 h 15 min of travel, both ways together
out nonstop, back nonstop
found today
Found recently, and the cheapest we hold
$620 1 Jan 2027 – 6 Jan 2027found todaySee prices for these dates
$450 2 Dec – 12 Decfound 3 days agoSee prices for these dates
What have prices looked like?
Over 25 days, 24 Sept to 18 Oct, the cheapest return we saw each day was $450 to $520.
At $620, the cheapest return found recently is above that range.
25 days is a short history, so treat this range as an early guide.
Those were the prices on those days, not today's.
Is this a good return price?
Compared with the cheapest return fare on each of 8 departure dates from 24 Oct to 3 Mar 2027, found by travelers' searches in the last 7 days (economy, the price the seller showed on Aviasales). The usual range is the middle half of those prices.
Could nearby dates be cheaper?
We hold no other 5-night return fares leaving within 3 days of 1 Jan 2027 to compare.
Every date we hold
10 fares on 8 departure dates
See the chart as a table
| Dates | From | Airline | Airports | Stops | Found | |
|---|---|---|---|---|---|---|
| 24 Oct – 28 Oct | $595 | Hunnu Air | Chinggis Khaan International Airport (UBN) → Hong Kong International Airport (HKG) | out 1 stop, back 1 stop | found 4 days ago | See prices for these dates |
| 28 Oct – 30 Oct | $555 | MIAT Mongolian Airlines | Chinggis Khaan International Airport (UBN) → Hong Kong International Airport (HKG) | out 1 stop, back 1 stop | found 4 days ago | See prices for these dates |
| 7 Nov – 11 Nov | $492 | Air China | Chinggis Khaan International Airport (UBN) → Hong Kong International Airport (HKG) | out 1 stop, back 1 stop | found 4 days ago | See prices for these dates |
| 29 Nov – 12 Dec | $539 | Air China | Chinggis Khaan International Airport (UBN) → Hong Kong International Airport (HKG) | out 1 stop, back 1 stop | found 5 days ago | See prices for these dates |
| 2 Dec – 12 Dec | $450 | Air China | Chinggis Khaan International Airport (UBN) → Hong Kong International Airport (HKG) | out 1 stop, back 1 stop | found 3 days ago | See prices for these dates |
| 1 Jan 2027 – 6 Jan 2027 | $620 | MIAT Mongolian Airlines | Chinggis Khaan International Airport (UBN) → Hong Kong International Airport (HKG) | out nonstop, back nonstop | found today | See prices for these dates |
| 5 Jan 2027 – 4 Feb 2027 | $727 | MIAT Mongolian Airlines | Chinggis Khaan International Airport (UBN) → Hong Kong International Airport (HKG) | out nonstop, back nonstop | found 3 days ago | See prices for these dates |
| 3 Mar 2027 – 14 Mar 2027 | $556 | MIAT Mongolian Airlines | Chinggis Khaan International Airport (UBN) → Hong Kong International Airport (HKG) | out nonstop, back nonstop | found 2 days ago | See prices for these dates |
Which month looks cheapest?
December 2026 is the cheapest month — from $450.
Airlines on the cheapest dates: MIAT Mongolian Airlines, Air China, Hunnu Air.
One-way
The cheapest one-way fare on each of 5 departure dates is usually $302 to $332.
Cheapest one-way found recently
$340
20 Oct · MIAT Mongolian Airlines
Chinggis Khaan International Airport (UBN) → Hong Kong International Airport (HKG)
Leaves 6:20 a.m. · 4 h 35 min trip
stops unknown
found 2 days ago
Cheapest nonstop one-way
$302
17 Jan 2027 · MIAT Mongolian Airlines
Chinggis Khaan International Airport (UBN) → Hong Kong International Airport (HKG)
Leaves 7:15 a.m. · 4 h 35 min trip
nonstop
found 4 days ago
Found recently, and the cheapest we hold
$340 20 Octfound 2 days agoOpen this trip
$226 30 Novfound 6 days agoOpen this trip
What have prices looked like?
Over 25 days, 24 Sept to 18 Oct, the cheapest one-way we saw each day was $209 to $287.
At $340, the cheapest one-way found recently is above that range.
25 days is a short history, so treat this range as an early guide.
Those were the prices on those days, not today's.
Is this a good one-way price?
Compared with the cheapest one-way fare on each of 5 departure dates from 20 Oct to 5 Mar 2027, found by travelers' searches in the last 7 days (economy, the price the seller showed on Aviasales). The usual range is the middle half of those prices.
Could nearby dates be cheaper?
We hold no other one-way fares leaving within 3 days of 20 Oct to compare.
Every date we hold
5 fares on 5 departure dates
See the chart as a table
| Dates | From | Airline | Airports | Stops | Found | |
|---|---|---|---|---|---|---|
| 20 Oct | $340 | MIAT Mongolian Airlines | Chinggis Khaan International Airport (UBN) → Hong Kong International Airport (HKG) | stops unknown | found 2 days ago | Open this trip |
| 30 Nov | $226 | MIAT Mongolian Airlines | Chinggis Khaan International Airport (UBN) → Hong Kong International Airport (HKG) | 1 stop | found 6 days ago | Open this trip |
| 11 Jan 2027 | $332 | MIAT Mongolian Airlines | Chinggis Khaan International Airport (UBN) → Hong Kong International Airport (HKG) | nonstop | found 6 days ago | Open this trip |
| 17 Jan 2027 | $302 | MIAT Mongolian Airlines | Chinggis Khaan International Airport (UBN) → Hong Kong International Airport (HKG) | nonstop | found 4 days ago | Open this trip |
| 5 Mar 2027 | $328 | MIAT Mongolian Airlines | Chinggis Khaan International Airport (UBN) → Hong Kong International Airport (HKG) | nonstop | found 6 days ago | Open this trip |
Which month looks cheapest?
November 2026 is the cheapest month — from $226.
Airlines on the cheapest dates: MIAT Mongolian Airlines.
Premium cabin fares from Ulaanbaatar to Hong Kong
We hold no premium economy, business or first-class fares for this route: we collect them for the busiest routes, and this one is not among them yet.
Today's prices for 1 Jan 2027 – 6 Jan 2027 in another cabin: Premium economy · Business · First
Today's prices for 20 Oct in another cabin: Premium economy · Business · First
How far ahead were prices cheapest for Ulaanbaatar to Hong Kong?
Return
Fares 30 to 59 days before departure were typically 12% lower than 0 to 6 days before departure.
From the cheapest return each day between 24 Sept and 18 Oct (25 days), grouped by how many days ahead the flight left; one adult in economy.
Each range covers different departure dates, so this compares typical fares, not the same trip priced twice.
Prices reflect recent searches — current fares may differ.
See these ranges as a table
| Booked ahead by | Typical fare | Cheapest day | Above the cheapest | Days of prices |
|---|---|---|---|---|
| 0–6 days | $573 | $538 | +14% | 23 |
| 7–13 days | $534 | $508 | +6% | 25 |
| 14–29 days | $503 | $490 | +0% | 25 |
| 30–59 days | $502 | $450 | Cheapest seen | 23 |
| 60–89 days | $523 | $502 | +4% | 23 |
| 90–179 days | $550 | $521 | +10% | 25 |
| 180+ days | $521 | $501 | +4% | 25 |
One-way
The cheapest fares were 60 to 89 days before departure.
From the cheapest one-way each day between 24 Sept and 18 Oct (25 days), grouped by how many days ahead the flight left; one adult in economy.
Each range covers different departure dates, so this compares typical fares, not the same trip priced twice.
Prices reflect recent searches — current fares may differ.
See these ranges as a table
| Booked ahead by | Typical fare | Cheapest day | Above the cheapest | Days of prices |
|---|---|---|---|---|
| 60–89 days | $230 | $209 | Cheapest seen | 14 |
| 90–179 days | $286 | $223 | +24% | 24 |
| 180+ days | $287 | $287 | +25% | 8 |
Could a nearby airport be cheaper?
A different airport at either end can change the fare — sometimes a lot.
Return
Ulaanbaatar → Guangzhou
129 km from Hong Kong
$533
$87 less than flying to Hong Kong
4 Nov – 13 Nov · UBN → CAN · out 1 stop, back 1 stop
found yesterday
Ulaanbaatar → Shenzhen
27 km from Hong Kong
$643
$23 more than flying to Hong Kong
30 Oct – 11 Nov · UBN → SZX · out 1 stop, back 1 stop
found yesterday
Cheapest recent price on each route — round trip, per traveler in Economy. Distances are in a straight line.
One-way
Ulaanbaatar → Guangzhou
129 km from Hong Kong
$233
$107 less than flying to Hong Kong
26 Oct · UBN → CAN · stops unknown
found 2 days ago
Ulaanbaatar → Shenzhen
27 km from Hong Kong
$398
$58 more than flying to Hong Kong
31 May 2027 · UBN → SZX · 1 stop
found 3 days ago
Cheapest recent price on each route — one way, per traveler in Economy. Distances are in a straight line.
Live price for these dates
The cheapest return found recently is for 1 Jan 2027 – 6 Jan 2027. A live search on this page shows what those dates cost now, for one adult in economy.
Prices are what travelers' searches on Aviasales found in the last 7 days, in US dollars: the price the seller showed on Aviasales; bags may cost extra. Fares change, so check today's price before you book. How our prices work