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Ulaanbaatar to Phuket flights in December 2026 from $355 UBN → HKT

Chinggis Khaan International Airport (UBN) → Phuket International Airport (HKT)

For departures in December 2026, the cheapest return found recently is $669 with Aero Mongolia, 21 Dec – 17 Jan 2027, found 2 days ago. The cheapest one-way found recently is $355 with Air China, 1 Dec, found 7 days ago.

Return

In December 2026, the cheapest return fare on each of 11 departure dates is usually $669 to $941. Across all 26 departure dates we hold on this route, it is usually $618 to $906. Of the 3 months with enough return fares to compare, December 2026 is usually the most expensive.

Cheapest return found recently

$669

21 Dec – 17 Jan 2027 · Aero Mongolia

Chinggis Khaan International Airport (UBN) → Phuket International Airport (HKT)

out 2 stops, back 2 stops

found 2 days ago

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Cheapest we hold, of any age

$565

1 Dec – 16 Dec · Air China

Chinggis Khaan International Airport (UBN) → Phuket International Airport (HKT)

out 1 stop, back 1 stop

found 4 days ago

See prices for these datesCheck today's price

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The cheapest dates in December 2026

DatesFromAirlineStopsFound
1 Dec – 16 Dec$565Air Chinaout 1 stop, back 1 stopfound 4 days agoSee prices for these dates
4 Dec – 20 Dec$638Air Chinaout 2 stops, back nonstopfound 3 days agoSee prices for these dates
19 Dec – 31 Dec$669Aero Mongoliaout 2 stops, back nonstopfound 5 days agoSee prices for these dates
21 Dec – 17 Jan 2027$669Aero Mongoliaout 2 stops, back 2 stopsfound 2 days agoSee prices for these dates
23 Dec – 18 Jan 2027$805Air Chinaout 3 stops, back 2 stopsfound 3 days agoSee prices for these dates

Every date we hold

11 departure dates

1 Dec – 16 Dec: $565, found 4 days ago4 Dec – 20 Dec: $638, found 3 days ago19 Dec – 31 Dec: $669, found 5 days ago21 Dec – 17 Jan 2027: $669, found 2 days ago23 Dec – 18 Jan 2027: $805, found 3 days ago24 Dec – 14 Jan 2027: $898, found 2 days ago26 Dec – 14 Jan 2027: $965, found 3 days ago27 Dec – 18 Jan 2027: $893, found 3 days ago28 Dec – 17 Jan 2027: $973, found 3 days ago30 Dec – 12 Jan 2027: $954, found 3 days ago31 Dec – 11 Jan 2027: $928, found 5 days agoDec
See the chart as a table
The cheapest price seen for each departure date — per traveler in Economy.
DatesFromAirlineAirportsStopsFound
1 Dec – 16 Dec$565Air ChinaChinggis Khaan International Airport (UBN) → Phuket International Airport (HKT)out 1 stop, back 1 stopfound 4 days agoSee prices for these dates
4 Dec – 20 Dec$638Air ChinaChinggis Khaan International Airport (UBN) → Phuket International Airport (HKT)out 2 stops, back nonstopfound 3 days agoSee prices for these dates
19 Dec – 31 Dec$669Aero MongoliaChinggis Khaan International Airport (UBN) → Phuket International Airport (HKT)out 2 stops, back nonstopfound 5 days agoSee prices for these dates
21 Dec – 17 Jan 2027$669Aero MongoliaChinggis Khaan International Airport (UBN) → Phuket International Airport (HKT)out 2 stops, back 2 stopsfound 2 days agoSee prices for these dates
23 Dec – 18 Jan 2027$805Air ChinaChinggis Khaan International Airport (UBN) → Phuket International Airport (HKT)out 3 stops, back 2 stopsfound 3 days agoSee prices for these dates
24 Dec – 14 Jan 2027$898Air ChinaChinggis Khaan International Airport (UBN) → Phuket International Airport (HKT)out 3 stops, back 2 stopsfound 2 days agoSee prices for these dates
26 Dec – 14 Jan 2027$965Air ChinaChinggis Khaan International Airport (UBN) → Phuket International Airport (HKT)out 3 stops, back 3 stopsfound 3 days agoSee prices for these dates
27 Dec – 18 Jan 2027$893Asiana AirlinesChinggis Khaan International Airport (UBN) → Phuket International Airport (HKT)out 1 stop, back 1 stopfound 3 days agoSee prices for these dates
28 Dec – 17 Jan 2027$973Air ChinaChinggis Khaan International Airport (UBN) → Phuket International Airport (HKT)out 2 stops, back 2 stopsfound 3 days agoSee prices for these dates
30 Dec – 12 Jan 2027$954Air ChinaChinggis Khaan International Airport (UBN) → Phuket International Airport (HKT)out 2 stops, back 2 stopsfound 3 days agoSee prices for these dates
31 Dec – 11 Jan 2027$928MIAT Mongolian AirlinesChinggis Khaan International Airport (UBN) → Phuket International Airport (HKT)out 2 stops, back 2 stopsfound 5 days agoSee prices for these dates

Which month looks cheapest?

November 2026 is the cheapest month — from $561.

November 2026From $561Cheapest seen5 departure dates21 Nov – 1 Dec · found 7 days agoSee prices for these dates
December 2026From $56511 departure dates1 Dec – 16 Dec · found 4 days agoSee prices for these dates
January 2027From $6087 departure dates13 Jan 2027 – 24 Jan 2027 · found 6 days agoSee prices for these datesEvery date in January 2027
February 2027From $7091 departure date10 Feb 2027 – 24 Feb 2027 · found 5 days agoSee prices for these dates
March 2027From $9081 departure date24 Mar 2027 – 10 Apr 2027 · found 6 days agoSee prices for these dates
April 2027From $7101 departure date9 Apr 2027 – 17 Apr 2027 · found 2 days agoSee prices for these dates

One-way

We hold one-way fares on only 1 departure date in December 2026, too few to say what one usually costs.

Cheapest one-way found recently

$355

1 Dec · Air China

Chinggis Khaan International Airport (UBN) → Phuket International Airport (HKT)

stops unknown

found 7 days ago

Open this tripCheck today's price

It is also the cheapest one-way we hold, of any age.

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The cheapest dates in December 2026

DatesFromAirlineStopsFound
1 Dec$355Air Chinastops unknownfound 7 days agoOpen this trip

Every date we hold

1 departure date

See every date as a table
The cheapest price seen for each departure date — per traveler in Economy.
DatesFromAirlineAirportsStopsFound
1 Dec$355Air ChinaChinggis Khaan International Airport (UBN) → Phuket International Airport (HKT)stops unknownfound 7 days agoOpen this trip

Which month looks cheapest?

March 2027 is the cheapest month — from $300.

November 2026From $3532 departure dates18 Nov · found 2 days agoOpen this trip
December 2026From $3551 departure date1 Dec · found 7 days agoOpen this trip
March 2027From $300Cheapest seen1 departure date20 Mar 2027 · found 2 days agoOpen this trip

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