Busan to Ulaanbaatar PUS → UBN
Gimhae International Airport (PUS) → Chinggis Khaan International Airport (UBN)
The cheapest return found recently is $468 with Jeju Air, 23 Nov – 29 Nov, found yesterday. The cheapest one-way found recently is $277 with Korean Air, 10 Apr 2027, found 4 days ago.
Return
The cheapest return fare on each of 4 departure dates is usually $500 to $563.
Cheapest return found recently
$468
23 Nov – 29 Nov · Jeju Air
Gimhae International Airport (PUS) → Chinggis Khaan International Airport (UBN)
Leaves 7:10 a.m. · Return leaves 3:15 p.m. · 61 h 5 min of travel, both ways together
out 1 stop, back 1 stop
found yesterday
Cheapest nonstop return
None seen yet.
Found recently, and the cheapest we hold
$468 23 Nov – 29 Novfound yesterdaySee prices for these dates
It is also the cheapest return we hold, of any age.
What have prices looked like?
Over 25 days, 24 Sept to 18 Oct, the cheapest return we saw each day was $351 to $654.
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 4 departure dates from 25 Oct to 23 Nov, 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 6-night return fares leaving within 3 days of 23 Nov to compare.
Every date we hold
4 fares on 4 departure dates
See the chart as a table
| Dates | From | Airline | Airports | Stops | Found | |
|---|---|---|---|---|---|---|
| 25 Oct – 23 Nov | $563 | Jeju Air | Gimhae International Airport (PUS) → Chinggis Khaan International Airport (UBN) | out 1 stop, back 1 stop | found 5 days ago | See prices for these dates |
| 26 Oct – 23 Nov | $564 | T'way Air | Gimhae International Airport (PUS) → Chinggis Khaan International Airport (UBN) | out 1 stop, back 1 stop | found 5 days ago | See prices for these dates |
| 5 Nov – 10 Nov | $510 | Air Busan | Gimhae International Airport (PUS) → Chinggis Khaan International Airport (UBN) | out 1 stop, back 1 stop | found 5 days ago | See prices for these dates |
| 23 Nov – 29 Nov | $468 | Jeju Air | Gimhae International Airport (PUS) → Chinggis Khaan International Airport (UBN) | out 1 stop, back 1 stop | found yesterday | See prices for these dates |
Which month looks cheapest?
November 2026 is the cheapest month — from $468.
Airlines on the cheapest dates: Jeju Air, T'way Air, Air Busan.
One-way
Not enough comparable prices yet for a usual one-way price.
Cheapest one-way found recently
$277
10 Apr 2027 · Korean Air
Gimhae International Airport (PUS) → Chinggis Khaan International Airport (UBN)
Leaves 8:00 a.m. · 16 h 5 min trip
1 stop
found 4 days ago
Cheapest nonstop one-way
None seen yet.
Found recently, and the cheapest we hold
$277 10 Apr 2027found 4 days agoOpen this trip
It is also the cheapest one-way we hold, of any age.
What have prices looked like?
Over 20 days, 24 Sept to 18 Oct, the cheapest one-way we saw each day was $119 to $305.
20 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?
Not enough comparable prices yet: we hold one-way fares on 2 departure dates and need at least 3 to say what is usual.
Could nearby dates be cheaper?
We hold no other one-way fares leaving within 3 days of 10 Apr 2027 to compare.
Every date we hold
2 fares on 2 departure dates
See the chart as a table
| Dates | From | Airline | Airports | Stops | Found | |
|---|---|---|---|---|---|---|
| 11 Jan 2027 | $283 | Air Busan | Gimhae International Airport (PUS) → Chinggis Khaan International Airport (UBN) | 1 stop | found 4 days ago | Open this trip |
| 10 Apr 2027 | $277 | Korean Air | Gimhae International Airport (PUS) → Chinggis Khaan International Airport (UBN) | 1 stop | found 4 days ago | Open this trip |
Which month looks cheapest?
April 2027 is the cheapest month — from $277.
Airlines on the cheapest dates: Air Busan, Korean Air.
Premium cabin fares from Busan to Ulaanbaatar
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 23 Nov – 29 Nov in another cabin: Premium economy · Business · First
Today's prices for 10 Apr 2027 in another cabin: Premium economy · Business · First
How far ahead were prices cheapest for Busan to Ulaanbaatar?
Return
The cheapest fares were 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 | $517 | $351 | Cheapest seen | 16 |
| 7–13 days | $563 | $563 | +9% | 9 |
| 14–29 days | $529 | $510 | +2% | 15 |
| 30–59 days | $541 | $468 | +5% | 18 |
| 60–89 days | $537 | $533 | +4% | 14 |
One-way
Not enough history yet: in 20 days of one-way prices, 24 Sept to 18 Oct, fewer than 3 booking ranges had prices on 7 days or more.
Could a nearby airport be cheaper?
A different airport at either end can change the fare — sometimes a lot.
One-way
Daegu → Ulaanbaatar
88 km from Busan
$277
The same price as flying from Busan
14 Dec · TAE → UBN · 2 stops
found 4 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 23 Nov – 29 Nov. 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