Seoul to Sydney GMP, ICN → SYD, WSI
Gimpo International Airport (GMP), Incheon International Airport (ICN) → Sydney (Kingsford Smith) Airport (SYD), Western Sydney Airport (WSI)
The cheapest return found recently is $699 with China Eastern, 16 Feb 2027 – 25 Feb 2027, found yesterday. The cheapest one-way found recently is $229 with Jetstar, 31 Mar 2027, found yesterday.
Return
The cheapest return fare on each of 7 departure dates is usually $654 to $813.
Cheapest return found recently
$699
16 Feb 2027 – 25 Feb 2027 · China Eastern
Incheon International Airport (ICN) → Sydney (Kingsford Smith) Airport (SYD)
Leaves 6:25 p.m. · Return leaves 9:30 p.m. · 33 h 35 min of travel, both ways together
out 1 stop, back 1 stop · via Shanghai Pudong International Airport (PVG) · overnight connection
found yesterday
Cheapest nonstop return
$721
16 Feb 2027 – 25 Feb 2027 · Jetstar
Incheon International Airport (ICN) → Sydney (Kingsford Smith) Airport (SYD)
Leaves 9:50 p.m. · Return leaves 10:15 p.m. · 20 h 50 min of travel, both ways together
out nonstop, back nonstop
found yesterday
Every nonstop date from Seoul to Sydney
Found recently, and the cheapest we hold
$699 16 Feb 2027 – 25 Feb 2027found yesterdaySee prices for these dates
$601 18 Nov – 2 Decfound 6 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 $516 to $601.
At $699, 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 7 departure dates from 17 Nov to 15 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 9-night return fares leaving within 3 days of 16 Feb 2027 to compare.
Every date we hold
123 fares on 7 departure dates
See the chart as a table
| Dates | From | Airline | Airports | Stops | Found | |
|---|---|---|---|---|---|---|
| 17 Nov – 1 Dec | $683 | Jetstar | Incheon International Airport (ICN) → Sydney (Kingsford Smith) Airport (SYD) | out nonstop, back nonstop | found 6 days ago | See prices for these dates |
| 18 Nov – 2 Dec | $601 | China Eastern | Incheon International Airport (ICN) → Sydney (Kingsford Smith) Airport (SYD) | out 1 stop, back 1 stop | found 6 days ago | See prices for these dates |
| 19 Nov – 24 Dec | $927 | Jetstar | Incheon International Airport (ICN) → Sydney (Kingsford Smith) Airport (SYD) | out nonstop, back nonstop | found 6 days ago | See prices for these dates |
| 23 Nov – 8 Dec | $657 | Hainan Airlines | Incheon International Airport (ICN) → Sydney (Kingsford Smith) Airport (SYD) | out 1 stop, back 1 stop | found 4 days ago | See prices for these dates |
| 16 Jan 2027 – 5 Feb 2027 | $1,000 | China Eastern | Incheon International Airport (ICN) → Sydney (Kingsford Smith) Airport (SYD) | out 1 stop, back 1 stop | found 4 days ago | See prices for these dates |
| 16 Feb 2027 – 25 Feb 2027 | $699 | China Eastern | Incheon International Airport (ICN) → Sydney (Kingsford Smith) Airport (SYD) | out 1 stop, back 1 stop | found yesterday | See prices for these dates |
| 15 Mar 2027 – 26 Mar 2027 | $651 | Jetstar | Incheon International Airport (ICN) → Sydney (Kingsford Smith) Airport (SYD) | out nonstop, back nonstop | found 2 days ago | See prices for these dates |
Which month looks cheapest?
November 2026 is the cheapest month — from $601.
Airlines on the cheapest dates: Jetstar, China Eastern, Hainan Airlines.
One-way
Not enough comparable prices yet for a usual one-way price.
Cheapest one-way found recently
$229
31 Mar 2027 · Jetstar
Incheon International Airport (ICN) → Sydney (Kingsford Smith) Airport (SYD)
Leaves 9:50 p.m. · 10 h 15 min trip
nonstop
found yesterday
Cheapest nonstop one-way
$229
31 Mar 2027 · Jetstar
Incheon International Airport (ICN) → Sydney (Kingsford Smith) Airport (SYD)
Leaves 9:50 p.m. · 10 h 15 min trip
nonstop
found yesterday
Found recently, and the cheapest we hold
$229 31 Mar 2027found yesterdayOpen this trip
It is also the cheapest one-way we hold, of any age.
What have prices looked like?
Over 15 days, 24 Sept to 18 Oct, the cheapest one-way we saw each day was $229 to $252.
At $229, the cheapest one-way found recently is at the low end of that range.
15 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 1 departure date 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 31 Mar 2027 to compare.
Every date we hold
13 fares on 1 departure dates
See every date as a table
| Dates | From | Airline | Airports | Stops | Found | |
|---|---|---|---|---|---|---|
| 31 Mar 2027 | $229 | Jetstar | Incheon International Airport (ICN) → Sydney (Kingsford Smith) Airport (SYD) | nonstop | found yesterday | Open this trip |
Airlines on the cheapest dates: Jetstar.
Premium cabin fares from Seoul to Sydney
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 16 Feb 2027 – 25 Feb 2027 in another cabin: Premium economy · Business · First
Today's prices for 31 Mar 2027 in another cabin: Premium economy · Business · First
How far ahead were prices cheapest for Seoul to Sydney?
Return
The cheapest fares were 180 or more 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 |
|---|---|---|---|---|
| 14–29 days | $549 | $522 | +1% | 17 |
| 30–59 days | $601 | $549 | +11% | 23 |
| 60–89 days | $725 | $701 | +34% | 15 |
| 90–179 days | $616 | $548 | +13% | 25 |
| 180+ days | $543 | $534 | Cheapest seen | 25 |
One-way
Not enough history yet: in 15 days of one-way prices, 24 Sept to 18 Oct, fewer than 3 booking ranges had prices on 7 days or more.
Live price for these dates
The cheapest return found recently is for 16 Feb 2027 – 25 Feb 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