Plan for extra time at ICN as security lines can take up to 20 minutes, especially without fast track options.

Most accurate provider | OneTravel 3 stars |
|---|---|
Most trusted provider | OneTravel 3 stars |
Round-trip from | $567 (Mytrip) |
One-way from | $224 (Kiwi.com) |
Popular in | January |
Cheapest in | March |
Average price | $795 |
Good round-trip deal | $700 or less |
Good one-way deal | $350 or less |
Fly from
Fly to
Route
Depart
Return
Price
IncheonSydney
ICN - SYD
ICNSYD
Incheon Intl
Fri 4/10
9:50 pm-9:05 am
Nonstop10h 15m
Sydney Kingsford Smith
Sat 4/18
10:45 am-8:15 pm
Nonstop10h 30m
IncheonSydney
ICN - SYD
ICNSYD
Incheon Intl
Tue 3/10
9:50 pm-10:05 am
Nonstop10h 15m
Sydney Kingsford Smith
Wed 3/18
11:40 am-8:15 pm
Nonstop10h 35m
IncheonSydney
ICN - SYD
ICNSYD
Incheon Intl
Sun 5/31
9:50 pm-9:05 am
Nonstop10h 15m
Sydney Kingsford Smith
Mon 6/8
10:45 am-8:15 pm
Nonstop10h 30m
IncheonSydney
ICN - SYD
ICNSYD
Incheon Intl
Fri 3/20
8:00 pm-8:20 am
Nonstop10h 20m
Sydney Kingsford Smith
Fri 3/27
10:20 am-7:00 pm
Nonstop10h 40m
IncheonSydney
ICN - SYD
ICNSYD
Incheon Intl
Wed 3/4
12:10 am-6:05 am
2 stops51h 55m
Sydney Kingsford Smith
Wed 3/11
10:15 pm-8:55 pm
1 stop24h 40m
IncheonSydney
ICN - SYD
ICNSYD
Incheon Intl
Wed 3/11
9:40 pm-10:15 am
Nonstop10h 35m
Sydney Kingsford Smith
Sun 3/15
12:15 pm-9:15 pm
Nonstop11h 00m
IncheonSydney
ICN - SYD
ICNSYD
Incheon Intl
Wed 3/11
9:50 pm-10:05 am
Nonstop10h 15m
Sydney Kingsford Smith
Sun 3/15
11:40 am-8:15 pm
Nonstop10h 35m
IncheonSydney
ICN - SYD
ICNSYD
Incheon Intl
Mon 3/2
9:50 pm-10:05 am
Nonstop10h 15m
Sydney Kingsford Smith
Wed 3/11
11:40 am-8:15 pm
Nonstop10h 35m
IncheonSydney
ICN - SYD
ICNSYD
Incheon Intl
Thu 3/5
9:50 pm-10:05 am
Nonstop10h 15m
Sydney Kingsford Smith
Fri 3/13
11:15 am-1:55 pm
1 stop28h 40m
IncheonSydney
ICN - SYD
ICNSYD
Incheon Intl
Tue 2/24
11:05 am-7:55 am
1 stop18h 50m
Sydney Kingsford Smith
Wed 3/4
10:15 pm-8:55 pm
1 stop24h 40m
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*1 star | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*1 star |
Booking 64 days in advance of your planned departure date is, on average, the best time to get cheap flights from Incheon Intl Airport to Sydney. The general trend is that the closer you book to the departure date, the more expensive your flight will be.
Currently, November is the cheapest month in which you can book a flight from Incheon Intl Airport to Sydney (average of $365). Flying from Incheon Intl Airport to Sydney in January is currently the most expensive (average of $452). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
It’s typically best to fly out from Incheon Intl Airport to Sydney in the morning. Doing so could potentially save you 41% on the flight price compared to flying in the afternoon, which is usually more expensive.
About 34% of weekly flights between Incheon and Sydney have experienced delays in the past year, with the average delay time being 129 minutes.
Historically, flights departing at night are less likely to be delayed, whereas flights leaving in the morning tend to experience delays more often.
Wednesday tends to have the lowest number of delays on this route, whereas Saturday has historically faced a higher average of delays compared to other days of the week.
Over the last year, T'way Air have had the lowest number of delays on this route, with just 23% of flights being delayed.
Entertainment
Food
Boarding
Comfort
Crew
Overall
Reviews
Jacqueline,Aug 2025
ICN - SEA
Entertainment
Food
Boarding
Comfort
Crew
Overall
Reviews
Jacqueline,Aug 2025
ICN - SEA
Entertainment
Food
Boarding
Comfort
Crew
Overall
Reviews
Jacqueline,Aug 2025
ICN - SEA
Entertainment
Food
Boarding
Comfort
Crew
Overall
Reviews
Jacqueline,Aug 2025
ICN - SEA
Entertainment
Food
Boarding
Comfort
Crew
Overall
Reviews
Jacqueline,Aug 2025
ICN - SEA
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$385 | Average$597 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$394 | Average$538 | FlexibilityNo cancel fee | On-time74% | |
| Cheapest$448 | Average$682 | FlexibilityNo cancel fee | On-time88% | |
| Cheapest$657 | Average$967 | FlexibilityNo cancel fee | On-time81% | |
| Cheapest$710 | Average$1,239 | FlexibilityNo cancel fee | On-time76% |